Range-extending type energy storage equipment

Abstract

The utility model belongs to the technical field of energy storage power generation equipment, and particularly relates to range-extending type energy storage equipment which comprises a generator and an energy storage power supply, the generator is connected with the energy storage power supply in series, and the energy storage power supply is charged through the generator, commercial power and alternating current or direct current and can output the alternating current or the direct current; when the energy storage power supply needs to be charged, the generator can charge the energy storage power supply through the direct current output end, and the energy storage power supply can also be charged by adopting external direct current, so that the requirements of more use scenes can be met; the energy storage power supply can supply power in an area without commercial power or when the energy storage power supply is used as an emergency power supply, and when the electric quantity of the energy storage power supply is low, the generator can be started to charge the energy storage power supply, so that the total available electric quantity of the energy storage equipment is increased, and the endurance of the energy storage equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of energy storage equipment, specifically to a range-extended energy storage device. Background Technology

[0002] Mobile energy storage devices are portable devices used to store electrical energy. They typically have multiple output interfaces, are usually pre-charged before use, can supply power to various loads, and operate with low noise. They can be used in various power consumption scenarios such as outdoor activities, emergency power supply, and household power supply.

[0003] However, the maximum usable capacity of mobile energy storage devices is limited by battery specifications, resulting in poor endurance under heavy loads. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a range-extended energy storage device with strong endurance, which solves the problems of high noise, high air pollution and poor economy caused by pure internal combustion engine power supply.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A range-extended energy storage device includes a generator and an energy storage power supply. The generator and the energy storage power supply are connected in series. The energy storage power supply is charged by the generator, mains power, AC power or external DC power, and can output AC power or DC power.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0008] 1. When the energy storage power supply needs to be charged, the generator can charge the energy storage power supply through the DC output terminal. In some special cases (such as when AC charging is inconvenient), the energy storage power supply can also be charged by external DC power, which can meet the needs of more usage scenarios.

[0009] 2. In areas without mains power, or when used as an emergency power source, the energy storage power supply can provide power. When the energy storage power supply's charge is low, the generator can automatically start to charge the energy storage power supply, increasing the total available power of the energy storage device. Traditional generators generally operate within their optimal power / efficiency range, but during use, the total power of the load may be lower than the generator's optimal power, resulting in energy waste. In this solution, the energy storage power supply is equivalent to the generator's load. The generator's power output is constant, allowing it to operate and charge within its optimal power / efficiency range, improving energy utilization. The generator operates at its highest power / efficiency, minimizing generator operating time and thus reducing noise and fuel consumption during use.

[0010] In a preferred embodiment of this utility model, the energy storage power supply includes a battery pack, a bidirectional DC-DC module, and a bidirectional DC-AC module connected in sequence, wherein the bidirectional DC-AC module is connected to an AC input / output terminal;

[0011] When the battery pack supplies power to an AC load, the DC power output by the battery pack is boosted by a bidirectional DC-DC module and then converted into AC power by a bidirectional DC-AC module to supply power to the load.

[0012] When the battery pack is charged using external AC power, the AC power is converted into DC power by a bidirectional DC-AC module, and then stepped down by a bidirectional DC-DC module to charge the battery pack.

[0013] Beneficial effects: By setting up bidirectional DC-DC and bidirectional DC-AC modules in the energy storage power supply, the battery pack can be charged by external AC power and can also supply power to AC loads.

[0014] In a preferred embodiment of this utility model, the battery pack is also connected to a DC input / output terminal.

[0015] Beneficial effects: By setting DC input / output terminals in the energy storage power supply, the energy storage power supply can directly supply power to DC loads, and can also be charged by DC power supply.

[0016] In a preferred embodiment of the present invention, the generator includes a permanent magnet motor, and further includes a rectifier and voltage regulator module and a DC step-down module connected in sequence to the AC output terminal of the permanent magnet motor. The DC output terminal of the DC step-down module is connected to the energy storage power supply.

[0017] The high-voltage AC power generated by the permanent magnet motor is rectified and regulated by a voltage regulator module, and then passed through a DC step-down module to charge the energy storage power supply.

[0018] Beneficial effects: By setting up a rectifier and voltage regulator module and a DC step-down module, the high-voltage AC power generated by the permanent magnet motor when it is in a high-voltage state can be converted into DC power and stepped down, which can be used to charge the battery pack.

[0019] In a preferred embodiment of the present invention, the generator includes a permanent magnet motor and a rectifier and voltage regulator module connected to the AC output terminal of the permanent magnet motor. The DC output terminal of the rectifier and voltage regulator module is connected to the energy storage power supply, and the permanent magnet motor has a low-voltage output.

[0020] The low-voltage AC power generated by the permanent magnet motor is rectified and regulated by a voltage regulator module to charge the energy storage power supply.

[0021] Beneficial effects: By setting up a rectifier and voltage regulator module, the low-voltage AC power generated by the permanent magnet motor when it is working under low voltage can be converted into DC power to directly charge the battery pack. Compared with the high-voltage output solution, it is lower in cost and more efficient.

[0022] In a preferred embodiment of this utility model, the energy storage power supply can be used as the starting power supply for the engine in the generator, supplying power to the engine starting module for starting the engine; the starting module adopts a starter motor or a reverse drag starter submodule.

[0023] Beneficial effects: The starting module is powered by an energy storage power source, which can replace the battery in a traditional generator; the starter motor or reverse-drag starter submodule can start the motor quickly, usually in just a few seconds, which is faster than manual starting.

[0024] In a preferred embodiment of this utility model, the generator can be detachably installed on the energy storage power supply, and both the energy storage power supply and the motor can be used independently.

[0025] Beneficial effects: The generator is smaller in size than the energy storage power source. It can be integrated into the energy storage power source or it can be detached. When it is necessary to carry the energy storage device and the power consumption is small, the energy storage power source can be removed to reduce weight and size and make it easier to carry. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the first embodiment of the range-extended energy storage device of this utility model;

[0027] Figure 2 This is a circuit diagram of the AC output section of the energy storage power supply in Embodiment 1 of the range-extended energy storage device of this utility model;

[0028] Figure 3 This is a schematic diagram of Embodiment 2 of the range-extended energy storage device of this utility model. Detailed Implementation

[0029] Typical embodiments embodying the features and advantages of this utility model will be specifically described in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0030] In the description of this application, the terms "first", "second", "side", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0031] Example 1:

[0032] See Figure 1 , Figure 2 As shown, this embodiment discloses a generator and an energy storage power supply. The energy storage power supply includes a battery pack. The generator is combined with the energy storage power supply and is detachably connected to the energy storage power supply. The DC power output by the generator is charged through the DC input terminal of the battery pack. In this embodiment, the generator is small in size and can be installed on a larger battery pack, thereby improving the range. When the power demand is low, the generator can be detached and the energy storage power supply can be used alone, making it more convenient to carry.

[0033] The energy storage power supply also includes a bidirectional DC-DC module and a bidirectional DC-AC module connected in sequence to the battery pack. The bidirectional DC-AC module is connected to an AC input / output terminal. When the battery pack supplies AC power, the DC power output from the battery pack is boosted by the bidirectional DC-DC module and then converted into AC power by the bidirectional DC-AC module to supply power to the load. When the battery pack is charged using AC power, the AC power is converted into DC power by the bidirectional DC-AC module and then stepped down by the bidirectional DC-DC module to charge the battery pack. The battery pack is also connected to a DC input / output terminal. By setting a DC input / output terminal in the energy storage power supply, the energy storage power supply can directly supply power to DC loads and can also be charged by DC power.

[0034] In this embodiment, the bidirectional DC-DC module includes a boost / buck submodule and a rectifier and regulator submodule, and the bidirectional DC-AC module adopts a bidirectional full-bridge inverter module.

[0035] The generator includes a permanent magnet motor, an engine, and a starter motor. It also includes a rectifier and voltage regulator module and a DC-DC step-down module connected sequentially to the AC output terminal of the permanent magnet motor. The DC output terminal of the DC-DC step-down module is connected to the energy storage power supply. The generator operates at high voltage, and the generated high-voltage AC power is rectified and regulated by the voltage regulator module, then passed through the DC-DC step-down module to charge the energy storage power supply. The starter module uses a starter motor, which is powered by the energy storage power supply. The starter motor provides initial power to the engine, which drives the permanent magnet motor. The AC power generated by the permanent magnet motor is rectified and regulated by the voltage regulator module, then passed through the DC-DC step-down module to charge the energy storage power supply.

[0036] The range-extended energy storage device of this embodiment can be charged by DC power, AC power, mains power, or generator. When using electricity outdoors, depending on the power demand, only the energy storage power supply can be carried when the demand is small, and a generator can be assembled and carried when the demand is large. It is particularly suitable for areas where power supply cannot be provided around the clock, and especially for environments with certain requirements for noise levels and air quality (household and community power). It can be charged during the day and used at night, with only the battery pack charging and discharging, resulting in low noise. Therefore, the range-extended energy storage device of this solution is suitable for a variety of power environments.

[0037] Example 2:

[0038] See Figure 3 As shown, based on the first embodiment, the generator is in a low-voltage state, so the DC step-down module can be eliminated. After passing through the rectification and voltage regulation module, it directly charges the energy storage power supply. The starting module adopts a reverse drag sub-module. The reverse drag starting sub-module introduces the instantaneous current into the winding of the permanent magnet motor, so that it generates a reverse magnetic field. The rotor of the permanent magnet motor accelerates and starts in a short time through the reverse magnetic field.

[0039] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A range-extended energy storage device, comprising a generator and an energy storage power source, characterized in that: The generator is connected in series with the energy storage power supply. The energy storage power supply is charged by the generator, mains power, AC power or external DC power and can output AC power or DC power. The energy storage power supply includes a battery pack, a bidirectional DC-DC module, and a bidirectional DC-AC module connected in sequence, and the bidirectional DC-AC module is connected to an AC input / output terminal; When the battery pack supplies power to an AC load, the DC power output by the battery pack is boosted by a bidirectional DC-DC module and then converted into AC power by a bidirectional DC-AC module to supply power to the load. When the battery pack is charged with AC power, the AC power is converted into DC power by a bidirectional DC-AC module, and then stepped down by a bidirectional DC-DC module to charge the battery pack. The battery pack is also connected to a DC input / output terminal; The energy storage power source can be used as the starting power source for the engine in the generator, supplying power to the engine's starting module for starting the engine; The starting module uses a starter motor or a reverse-drag starter submodule.

2. The range-extended energy storage device according to claim 1, characterized in that: The generator includes a permanent magnet motor, and also includes a rectifier and voltage regulator module and a DC step-down module connected in sequence to the AC output terminal of the permanent magnet motor. The DC output terminal of the DC step-down module is connected to the energy storage power supply, and the permanent magnet motor has a high voltage output. The high-voltage AC power generated by the permanent magnet motor is rectified and regulated by a voltage regulator module, and then passed through a DC step-down module to charge the energy storage power supply.

3. The range-extended energy storage device according to claim 1, characterized in that: The generator includes a permanent magnet motor and a rectifier and voltage regulator module connected to the AC output terminal of the permanent magnet motor. The DC output terminal of the rectifier and voltage regulator module is connected to the energy storage power supply. The permanent magnet motor has a low-voltage output. The low-voltage AC power generated by the permanent magnet motor is rectified and regulated by a voltage regulator module to charge the energy storage power supply.

4. The range-extended energy storage device according to claim 1, characterized in that: The generator can be detachably installed on the energy storage power source, and both the energy storage power source and the generator can be used independently.

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