Magnetoelectric energy storage device

Abstract

The utility model provides a magnetoelectric energy storage device which comprises a permanent magnet alternating-current generator, an AC / DC rectifying and voltage-stabilizing module, a DC / DC voltage conversion module, a constant-voltage constant-current charging module and an energy storage module. An input shaft of the permanent magnet alternating-current generator is connected with a transmission shaft, the permanent magnet alternating-current generator outputs alternating current to the AC / DC rectifying and voltage-stabilizing module, the AC / DC rectifying and voltage-stabilizing module converts the input alternating current into direct current and outputs the direct current to the DC / DC voltage conversion module, the DC / DC voltage conversion module converts the input direct current into the same voltage in a unified mode, and the transmission shaft is connected with the permanent magnet alternating-current generator. And the constant-voltage constant-current charging module is used for boosting or reducing the voltage of the input direct current and then storing the direct current in the energy storage module. The magnetoelectric energy storage device can charge battery packs of electric equipment with different rated voltages; the battery pack comprises but is not limited to a battery pack of a vehicle, a steamship and the like, and the endurance mileage can be improved.

Description

Technical Field

[0001] The utility model relates to the field of electricity, and particularly to a magnetoelectric energy storage device. Background Art

[0002] With the continuous development of economy and technology, new energy has been widely used in today's main means of transportation. For example, new energy vehicles use batteries and motors as the driving power source.

[0003] However, one of the reasons restricting the further development of new energy is the battery's endurance mileage. For example, new energy vehicles need to be refueled at fixed points, and the number of charging stations in some cities is far less than that of gas stations, unable to meet the needs of users. To increase the endurance mileage of new energy vehicles means an increase in battery capacity, resulting in an increase in the weight of the whole vehicle, and ultimately leading to a lack of energy consumption ratio and cost performance.

[0004] Therefore, this application proposes a magnetoelectric energy storage device. Content of the Utility Model

[0005] In order to overcome the defects existing in the above-mentioned prior art, the purpose of the utility model is to provide a magnetoelectric energy storage device.

[0006] To achieve the above object of the utility model, the utility model provides a magnetoelectric energy storage device, including a permanent magnet alternator, an AC / DC rectifier voltage regulator module, a DC / DC voltage conversion module, a constant voltage and constant current charging module, and an energy storage module;

[0007] The input shaft of the permanent magnet alternator is connected to a transmission shaft, the permanent magnet alternator outputs alternating current to the AC / DC rectifier voltage regulator module, the AC / DC rectifier voltage regulator module converts the input alternating current into direct current and outputs it to the DC / DC voltage conversion module, the DC / DC voltage conversion module uniformly converts the input direct current into the same voltage and outputs it to the constant voltage and constant current charging module, and the constant voltage and constant current charging module stores the input direct current after boosting or bucking in the energy storage module.

[0008] Optionally, the AC / DC rectifier voltage regulator module includes a bridge rectifier chip; the AC output terminal of the permanent magnet alternator is connected to the input terminal of the bridge rectifier chip, the current output terminal of the bridge rectifier chip is connected to the DC / DC voltage conversion module, and the current output terminal of the bridge rectifier chip is also respectively connected with a filter capacitor and a voltage stabilizing diode, and this voltage stabilizing diode is in parallel with a voltage stabilizing capacitor.

[0009] Optionally, the DC / DC voltage conversion module includes a sampling triode, a PWM control chip, and a first transformer;

[0010] The voltage output terminal of the AC / DC rectifier voltage regulator module is connected to the collector of the sampling triode, and the base of the sampling triode is connected to the REF terminal of the PWM control chip; the emitter of the sampling triode is connected to the VCC terminal of the PWM control chip. The OUTPUT terminal and the GND terminal of the PWM control chip are connected to two pins of a four-pin inductor. The third pin of this four-pin inductor is connected to the gate of the first MOS tube, and the fourth pin of this four-pin inductor is connected to the source of the first MOS tube. The drain of the first MOS tube Q2 is connected to the input terminal of the constant voltage and constant current charging module. The source of the first MOS tube is also connected to the first terminal of the input of the first transformer. The second terminal of the input of the first transformer is connected to the second inductor, and the other end of the second inductor is connected to the input terminal of the constant voltage and constant current charging module. The first terminal and the second terminal of the output of the first transformer are both grounded. A parallel-connected first capacitor and Schottky diode are connected between the second terminal of the output of the first transformer and the second terminal of the input.

[0011] Optionally, the constant voltage and constant current charging module includes an adjustable voltage regulator chip;

[0012] The voltage output terminal of the DC / DC voltage conversion module is connected to the voltage input terminal of the adjustable voltage regulator chip. The voltage output terminal of the adjustable voltage regulator chip is connected to the first sliding rheostat and then connected to one end of the energy storage module; the voltage output terminal of the DC / DC voltage conversion module is also connected to the collector of the first triode and the collector of the second triode. The emitter of the first triode is connected to one end of the second sliding rheostat. The sliding terminal of this second sliding rheostat is connected to the base of the first triode. The other end of the second sliding rheostat is connected to the collector of the first triode. The base of the second triode is also connected to the collector of the first triode. The emitter of the second triode is connected to one end of the energy storage capacitor, and the other end of this energy storage capacitor is connected to the other end of the energy storage module.

[0013] The sampling boost constant current source composed of the adjustable voltage regulator chip, the second triode, the first triode, the first sliding rheostat, and the second sliding rheostat can meet the maximum peak charging of the energy storage module after being adjusted by the first sliding rheostat and the second sliding rheostat.

[0014] Optionally, it further includes an inverter power supply. The voltage of the energy storage module is output to the inverter power supply, and the inverter power supply is directly or indirectly connected to the load to supply power to the load.

[0015] Optionally, the inverter power supply includes an inverter circuit and a second transformer;

[0016] The inverter circuit includes a third triode, a fourth triode, a fifth triode, a sixth triode, a seventh triode, a second MOS tube, and a third MOS tube;

[0017] The voltage of the energy storage module is output to the emitter of the fifth triode. The base of the fifth triode is connected to the negative electrode of a diode, and the negative electrode of this diode is grounded. A first resistor is connected between the emitter and the base of the fifth triode. The collector of the fifth triode is connected to the gate of the first MOS tube, the collector of the third triode, the collector of the sixth triode, and the collector of the seventh triode. The emitter of the seventh triode is grounded, and its base is connected to the emitter of the sixth triode and then grounded. The base of the sixth triode is connected to a series of a second capacitor and a second resistor and then connected to the collector of the fifth triode. The collector of the sixth triode is connected to a third capacitor and then connected to the base of the third triode. The emitter of the third triode is connected to the base of the fourth triode and then grounded. The emitter of the fourth triode is grounded, and its collector is connected to the gate of the first MOS tube. The drain of the first MOS tube is grounded, and its source is connected to a low-voltage input terminal of the second transformer. The emitter of the seventh triode is also connected to the gate of the second MOS tube. The drain of the second MOS tube is grounded, and its source is connected to another low-voltage input terminal of the second transformer. The high-voltage output terminal of the second transformer is connected to the load.

[0018] Optionally, the voltage output terminal of the inverter power supply is connected to the charger of the load, and the charger is connected to the battery pack of the load to charge the battery pack.

[0019] The beneficial effects of the present utility model are as follows: The magnetoelectric energy storage device has a simple structure and low cost. The drive shaft drives the permanent magnet AC generator to generate electricity. The alternating current generated by the permanent magnet AC generator is converted into stable direct current and then stored in the energy storage module. At the same time, in cooperation with the inverter power supply and the charger of the electrical equipment, it can charge the battery packs of electrical equipment with different rated voltages. The battery pack includes, but is not limited to, the battery packs of vehicles, ships, etc. When used to charge the battery packs of vehicles, ships, etc., it can improve their cruising range.

[0020] Some of the additional aspects and advantages of the present utility model will be given in the following description, some will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0021] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0022] Figure 1 is the principle block diagram of the present utility model;

[0023] Figure 2 is the circuit schematic diagram of the present utility model. Detailed Embodiments

[0024] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0025] In the description of the present utility model, unless otherwise specified and defined, it should be noted that the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the communication inside two elements. It can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] As Figure 1 and Figure 2 shown, the present utility model provides a magnetoelectric energy storage device, which rectifies, stabilizes the voltage, boosts the voltage of a permanent magnet AC generator to generate a constant voltage and constant current power supply, and satisfies the charging and discharging functions of the rated energy storage module voltage. In this embodiment, the magnetoelectric energy storage device is applied to a vehicle. The mechanical energy generated by the inertial energy and electric energy during the movement of the vehicle is transmitted to the permanent magnet AC generator through a transmission shaft. The peak voltage of the permanent magnet AC generator is converted into a DC power supply after rectification and filtering, and then converted into a constant voltage and constant current power supply through a DC / DC voltage conversion module to supply charging and energy storage for a single 12V / 20AH energy storage module. After energy storage charging, the energy storage module supplies power to a 12V / 220V inverter. The 220V AC power generated by the inverter can supply different types of battery chargers, and the output end of the charger can supply different types of battery packs for charging and energy storage. When the battery pack is fully charged, it can supply input electric energy for the rated power of the vehicle.

[0027] Specifically, in this embodiment, the magnetoelectric energy storage device includes a permanent magnet AC generator, an AC / DC rectification and voltage stabilization module, a DC / DC voltage conversion module, a constant voltage and constant current charging module, and an energy storage module.

[0028] The input shaft of the permanent magnet AC generator is directly or indirectly connected to the transmission shaft of the vehicle. The permanent magnet AC generator outputs alternating current to the AC / DC rectification and voltage stabilization module. The AC / DC rectification and voltage stabilization module converts the input alternating current into direct current and outputs it to the DC / DC voltage conversion module. The DC / DC voltage conversion module uniformly converts the input direct current into the same voltage and outputs it to the constant voltage and constant current charging module. The constant voltage and constant current charging module boosts or buck-boosts the input direct current and stores it in the energy storage module.

[0029] In this embodiment, the maximum input power of the permanent magnet alternator is 550 W, the voltage output is 36 V - 90 V, and the rotational speed is 400 r / min - 1000 r / min. The voltage output by the permanent magnet alternator is input into the AC / DC rectification and voltage stabilization module, where it is rectified by the bridge rectifier chip U1 and filtered and stored as direct current by electrolytic capacitors.

[0030] Specifically, the AC output terminal of the permanent magnet alternator is connected to the input terminal of the bridge rectifier chip U1. The current output terminal of the bridge rectifier chip U1 is connected to the DC / DC voltage conversion module. The current output terminal of the bridge rectifier chip U1 is also respectively connected with a filter capacitor and a voltage stabilizing diode D1, and the voltage stabilizing diode D1 is connected in parallel with a voltage stabilizing capacitor. In this embodiment, the filter capacitor is composed of two 2200 uF capacitors connected in parallel, and the voltage stabilizing capacitor is a 100 uF capacitor. Both the filter capacitor and the voltage stabilizing capacitor use electrolytic capacitors, and the negative electrodes of the electrolytic capacitors are grounded. The bridge rectifier chip U1 is preferably but not limited to using a KBP3510 rectifier bridge.

[0031] The DC / DC voltage conversion module outputs a stable voltage through the sampling triode Q1, the PWM control chip U2, the first transformer T1, the first MOS tube Q2, the first inductor L1, and the second inductor L2 for the voltage converted by the AC / DC rectification and voltage stabilization module. Specifically,

[0032] The current output terminal of the bridge rectifier chip U1 in the AC / DC rectifier and voltage regulator module is connected to the collector of the sampling triode Q1. A diode and a resistor can be connected in series between the two ends. The base of the sampling triode Q1 is connected to the REF terminal of the PWM control chip U2; the emitter of the sampling triode Q1 is connected to the VCC terminal of the PWM control chip U2. Two pins of a four-pin inductor L1 are connected between the OUTPUT terminal and the GND terminal of the PWM control chip U2. The third pin of the four-pin inductor L1 is connected to the third resistor R5 and then connected to the gate of the first MOS transistor Q2. A third diode D3 is also connected in parallel across the two ends of the third resistor R5. The fourth pin of the four-pin inductor L1 is connected to the source of the first MOS transistor Q2. A fourth resistor R6 is connected between the third pin and the fourth pin of the four-pin inductor L1. The drain of the first MOS transistor Q2 is connected to the input terminal of the constant voltage and constant current charging module. The source of the first MOS transistor Q2 is also connected to the first terminal of the input of the first transformer T1. The second terminal of the input of the first transformer T1 is connected to the second inductor L2. The other end of the second inductor L2 is connected to the input terminal of the constant voltage and constant current charging module. The first terminal and the second terminal of the output of the first transformer T1 are both grounded. A parallel combination of a first capacitor and a Schottky diode is connected between the second terminal of the output of the first transformer T1 and the second terminal of the input. In this embodiment, the sampling triode Q1 is preferably but not limited to the C3283 triode, the PWM control chip U2 is preferably but not limited to the TC3845P chip, the first MOS transistor is preferably but not limited to the N-MOS transistor of model IRF3710, and the model of the Schottky diode is preferably but not limited to LBR2001. The DC / DC voltage conversion module finally outputs a stable voltage of 12V and a maximum current of 10A.

[0033] The constant-voltage and constant-current charging module includes an adjustable voltage regulator chip U3. The drain of the first MOS transistor Q2 of the DC / DC voltage conversion module is connected to the voltage input terminal of the adjustable voltage regulator chip U3. The voltage output terminal of the adjustable voltage regulator chip U3 is connected to the first sliding rheostat R1 and then connected to one end of the energy storage module. The drain of the first MOS transistor Q2 of the DC / DC voltage conversion module is also connected to the collector of the first triode Q3 and the collector of the second triode Q4. The emitter of the first triode Q3 is connected to one end of the second sliding rheostat R2. The sliding end of the second sliding rheostat R2 is connected to the base of the first triode Q3. The other end of the second sliding rheostat R2 is connected to the collector of the first triode Q3. The base of the second triode Q4 is also connected to the collector of the first triode Q3. The emitter of the second triode Q4 is connected to one end of the energy storage capacitor. The other end of this energy storage capacitor is connected to the other end of the energy storage module. This energy storage capacitor is a positive and negative isolation capacitor. The sampling boost constant current source composed of the adjustable voltage regulator chip U3, the second triode Q4, the first triode Q3, the first sliding rheostat R1, and the second sliding rheostat R2 can meet the maximum peak charging of the energy storage module after being adjusted by the first sliding rheostat R1 and the second sliding rheostat R2. In this embodiment, the adjustable voltage regulator chip U3 is preferably but not limited to using an LM317 chip. The first triode Q3 is preferably but not limited to using a triode of model BD139. The second triode Q4 is preferably but not limited to using a triode of model TIP3055. The output voltage of the constant-voltage and constant-current charging module is higher than the voltage of the energy storage module, which satisfies the charging function of the rated energy storage module voltage. In this embodiment, the output voltage of the constant-voltage and constant-current charging module is 14.5V. The energy storage module can be a lead-acid battery, a graphene battery, or a lithium battery with a single-group capacity of DC12V / 20HA.

[0034] This embodiment also has an alternative solution. This alternative solution further includes an inverter power supply. The voltage of the energy storage module is output to the inverter power supply, and the inverter power supply is connected to a load to supply power to the load. In this embodiment, the inverter power supply converts DC12V to AC220V, with a set power of 1000W, a maximum output power > 90%, an no-load current < 0.3A, an input battery and charging voltage of 12.5V, and an output AC voltage of 220V to supply power to the load.

[0035] Specifically, in this alternative solution, the inverter power supply includes an inverter circuit and a second transformer T2. The inverter circuit includes a third triode BG3, a fourth triode BG4, a fifth triode BG5, a sixth triode BG2, a seventh triode BG1, a second MOS transistor Q3, and a third MOS transistor Q4.

[0036] The voltage of the energy storage module is output to the emitter of the fifth triode BG5. The base of the fifth triode BG5 is connected to the negative electrode of the second diode D2, and the negative electrode of the second diode D2 is grounded. A first resistor R3 is connected between the emitter and the base of the fifth triode BG5. The collector of the fifth triode BG5 is connected to the gate of the second MOS transistor Q3, the collector of the third triode BG3, the collector of the sixth triode BG2, and the collector of the seventh triode BG1. The emitter of the seventh triode BG1 is grounded, and its base is connected to the emitter of the sixth triode BG2 and then grounded. The base of the sixth triode BG2 is connected to a series-connected second capacitor C2 and second resistor R4 and then connected to the collector of the fifth triode BG5. The collector of the sixth triode BG2 is connected to a third capacitor C3 and then connected to the base of the third triode BG3. The emitter of the third triode BG3 is connected to the base of the fourth triode BG4 and then grounded. The emitter of the fourth triode BG4 is grounded, and its collector is connected to the gate of the second MOS transistor Q3. The drain of the second MOS transistor Q3 is grounded, and its source is connected to a low-voltage input terminal of the second transformer T2. The emitter of the seventh triode BG1 is also connected to the gate of the third MOS transistor Q4. The drain of the third MOS transistor Q4 is grounded, and its source is connected to another low-voltage input terminal of the second transformer T2. The high-voltage output terminal of the second transformer T2 is directly or indirectly connected to the load. When indirectly connected to the load, the high-voltage output terminal of the second transformer T2 can be connected to a charger, and the charger is connected to the battery pack to charge the battery pack, which satisfies the discharge function of the rated energy storage module voltage. In this embodiment, the charger can be an AC220V / DC48V - 72V charger, which can charge lead-acid batteries, graphene batteries or lithium battery series, and the output current can be controlled within 1A - 2.5A. Depending on different types of battery packs, chargers of the same specification are equipped. In this alternative solution, the battery pack is a DC48V - DC72V battery pack, which is composed of battery packs with different capacities, and the charging time depends on the battery capacity HA.

[0037] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A magnetoelectric energy storage device, characterized in that It includes a permanent magnet alternator, an AC / DC rectification and voltage regulation module, a DC / DC voltage conversion module, a constant voltage and constant current charging module, and an energy storage module; The input shaft of the permanent magnet alternator is connected to a transmission shaft. The permanent magnet alternator outputs alternating current to the AC / DC rectification and voltage regulation module. The AC / DC rectification and voltage regulation module converts the input alternating current into direct current and outputs it to the DC / DC voltage conversion module. The DC / DC voltage conversion module uniformly converts the input direct current into the same voltage and outputs it to the constant voltage and constant current charging module. The constant voltage and constant current charging module boosts or buck-boosts the input direct current and stores it in the energy storage module.

2. The magnetoelectric energy storage device according to claim 1, characterized in that The AC / DC rectification and voltage regulation module includes a bridge rectifier chip; the alternating current output terminal of the permanent magnet alternator is connected to the input terminal of the bridge rectifier chip. The current output terminal of the bridge rectifier chip is connected to the DC / DC voltage conversion module. The current output terminal of the bridge rectifier chip is also respectively connected with a filter capacitor and a voltage stabilizing diode, and the voltage stabilizing diode is connected in parallel with a voltage stabilizing capacitor.

3. The magnetoelectric energy storage device according to claim 1, wherein The DC / DC voltage conversion module includes a sampling triode, a PWM control chip, and a first transformer; The voltage output terminal of the AC / DC rectification and voltage regulation module is connected to the collector of the sampling triode. The base of the sampling triode is connected to the REF terminal of the PWM control chip; the emitter of the sampling triode is connected to the VCC terminal of the PWM control chip. The OUTPUT terminal and the GND terminal of the PWM control chip are connected to two pins of a four-pin inductor. The third pin of the four-pin inductor is connected to the gate of a first MOS transistor. The fourth pin of the four-pin inductor is connected to the source of the first MOS transistor. The drain of the first MOS transistor Q2 is connected to the input terminal of the constant voltage and constant current charging module. The source of the first MOS transistor is also connected to the first terminal of the input of the first transformer. The second terminal of the input of the first transformer is connected to a second inductor. The other end of the second inductor is connected to the input terminal of the constant voltage and constant current charging module. The first and second terminals of the output of the first transformer are both grounded. A first capacitor and a Schottky diode connected in parallel are connected between the second terminal of the output of the first transformer and the second terminal of the input.

4. The magnetoelectric energy storage device according to claim 1, wherein The constant voltage and constant current charging module includes an adjustable voltage stabilizing chip; The voltage output terminal of the DC / DC voltage conversion module is connected to the voltage input terminal of the adjustable voltage stabilizing chip. The voltage output terminal of the adjustable voltage stabilizing chip is connected to one end of a first sliding rheostat and then connected to one end of the energy storage module; the voltage output terminal of the DC / DC voltage conversion module is also connected to the collector of a first triode and the collector of a second triode. The emitter of the first triode is connected to one end of a second sliding rheostat. The sliding terminal of the second sliding rheostat is connected to the base of the first triode. The other end of the second sliding rheostat is connected to the collector of the first triode. The base of the second triode is also connected to the collector of the first triode. The emitter of the second triode is connected to one end of an energy storage capacitor. The other end of the energy storage capacitor is connected to the other end of the energy storage module.

5. The magnetoelectric energy storage device according to claim 1, characterized in that, It further includes an inverter power supply. The voltage of the energy storage module is output to the inverter power supply, and the inverter power supply is directly or indirectly connected to a load to supply power to the load.

6. The magnetoelectric energy storage device according to claim 5, wherein The inverter power supply includes an inverter circuit and a second transformer; The inverter circuit includes a third triode, a fourth triode, a fifth triode, a sixth triode, a seventh triode, a second MOS transistor, and a third MOS transistor; The voltage of the energy storage module is output to the emitter of the fifth triode. The base of the fifth triode is connected to the negative electrode of a diode, and the negative electrode of this diode is grounded. A first resistor is connected between the emitter and the base of the fifth triode. The collector of the fifth triode is connected to the gate of the first MOS transistor, the collector of the third triode, the collector of the sixth triode, and the collector of the seventh triode. The emitter of the seventh triode is grounded, and its base is connected to the emitter of the sixth triode and then grounded. The base of the sixth triode is connected to the series-connected second capacitor and second resistor and then connected to the collector of the fifth triode. The collector of the sixth triode is connected to the third capacitor and then connected to the base of the third triode. The emitter of the third triode is connected to the base of the fourth triode and then grounded. The emitter of the fourth triode is grounded, and its collector is connected to the gate of the first MOS transistor. The drain of the first MOS transistor is grounded, and its source is connected to a low-voltage input terminal of the second transformer. The emitter of the seventh triode is also connected to the gate of the second MOS transistor. The drain of the second MOS transistor is grounded, and its source is connected to another low-voltage input terminal of the second transformer. The high-voltage output terminal of the second transformer is connected to the load.

7. The magnetoelectric energy storage device according to claim 5 or 6, characterized in that The voltage output terminal of the inverter power supply is connected to the charger of the load, and the charger is connected to the battery pack of the load to charge the battery pack.

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