Hybrid power supply equipment

Abstract

The utility model belongs to the technical field of power supply equipment, and particularly relates to hybrid power supply equipment, a battery pack is detachably mounted on a generator set, the battery pack can independently output direct current or output alternating current through an inverter after boosting, and the generator set can independently output alternating current or output alternating current through the same inverter with the battery pack in parallel; the battery pack can provide a starting power supply for the generator set; the battery pack can be charged through direct current provided by the generator or an external power supply; when the load is small or the load is carried for a short time, or the product noise is required to be low, or the air pollution is required to be avoided, the battery pack can be used for supplying power independently; when the load is relatively large or is loaded for a long time, the generator set can independently supply power; when the load is large and the power supply requirement cannot be met by independently adopting the generator set or the battery pack for power supply, the generator set and the battery pack can jointly supply power to the load, and the system is suitable for various power utilization scenes.

Description

TECHNICAL FIELD

[0001] The utility model relates to power supply equipment technical field, concretely relates to a hybrid power supply equipment. BACKGROUND

[0002] Portable internal combustion engine generator is a kind of small, portable and easy to carry power supply equipment, but with obvious noise and air pollution, dependent on fuel;Battery pack power supply has the advantages of low noise, zero emission, but the charging time is long, and the electric quantity is limited.

[0003] In the prior art, the generator set and the battery pack are combined to supply power to the load, but it has the following disadvantages: the generator set supplies power to the alternating load or charges the battery pack when working, and then the battery pack supplies direct current to the load, but the above power supply equipment can only be used with the battery pack and the generator set, cannot be separated to supply power by the battery pack or the generator set alone, when the power demand is small, the whole carrying is more troublesome, and when the two power consumption sites are far apart, long line or two sets of power supply equipment are needed for power supply, and the use limitation is large. UTILITY MODEL CONTENTS

[0004] In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide a hybrid power supply equipment that can meet the power supply demand of multiple scenes.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] A hybrid power supply equipment includes a generator set and a battery pack, the battery pack can be detachably installed on the generator set, the battery pack and the generator set can be used alone or in combination, the battery pack can output direct current alone or output alternating current through the inverter of the generator set after voltage boosting, and the generator set can output alternating current alone or output alternating current in parallel with the battery pack through the inverter;The battery pack can provide starting power for the generator set;The battery pack can be charged by direct current.

[0007] Compared with the prior art, the utility model discloses the beneficial effect lies in: in the scheme, when generator unit and battery pack are used separately, battery pack can be charged through direct current or direct output direct current, and when generator unit and battery pack are used in combination, generator unit and battery pack can be parallelly connected to output alternating current, the hybrid power supply equipment of the scheme can satisfy the demand of more use scene, when load is small or short -time load, or when the requirement environmental noise is lower or the requirement air pollution is not, battery pack can be used to power supply alone, when load is larger, and the power supply alone can not satisfy the power supply demand, generator unit and battery pack can be used to power supply together for load, when needing to take this power supply equipment and to the demand of the electricity quantity is lower, only battery pack power supply can be used after the detachable battery pack, for example, battery pack can be used as electric starting power supply or vehicle emergency starting power supply or power bank, and the weight of the separated battery pack and generator unit is reduced, and it is easier to carry, when needing to use electricity at two places far apart, the power supply equipment can be used as two power supplies after being detached, and the traditional power supply equipment can only be used one by one, therefore, the power supply demand of multiple scenes can be satisfied, in the existing power supply equipment, battery pack and generator unit need two sets of inverters to output alternating current, and battery pack and generator unit in the scheme output alternating current through the same inverter, so that the circuit is simplified, and the cost is saved.

[0008] As the preferred embodiment of the utility model, the battery pack can be used as the starting power supply of the engine of the generator unit, and can supply power to the starting module of the engine for starting the engine.

[0009] Beneficial effect: the battery pack can supply power to the starting module, and can replace the storage battery part in the traditional generator unit; the starting motor or the reverse traction starter module can quickly start the motor, and the starting process can be completed in a few seconds, which is faster than manual starting.

[0010] As the preferred embodiment of the utility model, the generator unit can charge the battery pack.

[0011] Beneficial effect: when the load is not greater than the rated power of the generator unit, the generator unit can be loaded and charge the battery pack at the same time, and the energy utilization rate is improved; the generator unit can charge the battery pack when the load is not loaded and the battery pack has a low power, so that the battery pack cannot provide the starting power supply for the generator unit, and the battery pack cannot be used under other charging conditions.

[0012] As the preferred embodiment of the utility model, the generator unit can output direct current alone or output direct current in parallel with the battery pack after voltage reduction.

[0013] Beneficial effect: when the generator set and the battery pack cannot provide large enough current to meet the load demand, the generator set and the battery pack can be connected in parallel to output direct current, thereby improving the total direct current output.

[0014] As a preferred embodiment of the utility model, the inverter comprises a rectification and voltage stabilization module and an inversion module connected in sequence with the generator set, and a direct current voltage boosting module is connected between the battery pack and the output end of the rectification and voltage stabilization module.

[0015] The three-phase alternating current generated by the generator set is converted into direct current by the rectification and voltage stabilization module, and then the direct current is output as alternating current by the inversion module alone.

[0016] Beneficial effect: the battery pack and the generator set in the scheme output alternating current through the same inverter, thereby simplifying the circuit and saving cost.

[0017] As a preferred embodiment of the utility model, a direct current charging module is connected between the output end of the generator set and the input end of the battery pack.

[0018] Beneficial effect: the direct current charging module converts alternating current into direct current, so that the generator set can charge the battery pack.

[0019] As a preferred embodiment of the utility model, the inverter comprises a rectification and voltage stabilization module and an inversion module connected in sequence with the generator set, and a bidirectional DC-DC module is connected between the battery pack and the output end of the rectification and voltage stabilization module, and the bidirectional DC-DC module is connected to the direct current output end.

[0020] When the hybrid power supply device outputs alternating current: the three-phase alternating current generated by the generator set is converted into direct current by the rectification and voltage stabilization module, and then the direct current is output as alternating current by the inversion module alone; the direct current output by the battery pack is boosted by the bidirectional DC-DC module, and then the direct current is output as alternating current by the inversion module alone or in parallel with the generator set.

[0021] When the hybrid power supply device outputs direct current: the three-phase alternating current generated by the generator set is converted into direct current by the rectification and voltage stabilization module, and then the direct current is output as alternating current by the bidirectional DC-DC module, or the direct current is output as alternating current by the bidirectional DC-DC module or in parallel with the battery pack.

[0022] Beneficial effects: when the load is small or short time load, and the environment noise is required to be low, the battery pack can be used alone for power supply; when the load is large or long time load, the generator set can be used alone for power supply; when the load is large, and the power supply demand cannot be met by using the generator set or the battery pack alone for power supply, the generator set and the battery pack can be used together for load power supply; when it is necessary to carry the power supply equipment out and the power demand is low, the battery pack can be removed, and only the battery pack is used for power supply, so that the carrying is more convenient; when power is needed at two places far away from each other, the power supply equipment can be removed and used as two power sources, and is suitable for various application scenarios.

[0023] As a preferred embodiment of the utility model, the rectification and voltage stabilization module adopts a three-phase half-controlled rectification module, the inversion module adopts a full-bridge inversion module, and the bidirectional DC-DC module comprises a boost / buck submodule and a rectification and voltage stabilization submodule.

[0024] Beneficial effects: the three-phase half-controlled rectification module can convert alternating current into direct current, and when the load changes, the output current can be kept stable by adjusting the control angle, so that the utility model is suitable for occasions requiring accurate current control, and the direct current is converted into alternating current by the inversion module, so that power supply can be performed.

[0025] As a preferred embodiment of the utility model, a direct current charging module is connected between the output end of a single winding in the permanent magnet motor of the generator set and the input end of the battery pack.

[0026] Beneficial effects: the single winding is connected to a direct current charging module, the circuit design is relatively simple, the complexity is reduced, and the equipment cost is reduced.

[0027] As a preferred embodiment of the utility model, the battery pack is provided with at least one of a USB-A / B, a TYPE-C and an XT60 interface, so that direct input / output is facilitated.

[0028] Beneficial effects: the USB-A / B, the TYPE-C and the XT60 interface are suitable for connecting external equipment, direct input / output is facilitated, the XT60 interface is mainly used for connecting high-power equipment, especially in application scenarios requiring large current carrying capacity, and in the scheme, the battery pack and the generator set can be quickly connected through the interface. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a principle block diagram of a hybrid power supply equipment embodiment one of the utility model;

[0030] Figure 2 is a principle block diagram of a hybrid power supply equipment embodiment two of the utility model;

[0031] Figure 3It is the circuit principle diagram of the mixed power supply equipment embodiment two of the utility model;

[0032] Figure 4 It is the principle block diagram of the mixed power supply equipment embodiment three of the utility model;

[0033] Figure 5 It is the circuit principle diagram of the mixed power supply equipment embodiment three of the utility model. DETAILED DESCRIPTION

[0034] The typical implementation mode embodying the characteristics and advantages of the utility model will be described in the following description.It should be understood that the utility model can have various changes on different embodiments,which all do not deviate from the scope of the utility model,and the description and drawing in it are essentially used as description,not to limit the utility model.

[0035] In the description of the present application, the terms "first", "second", "one side" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the structure indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0036] Embodiment one:

[0037] Referring to Figure 1 The mixed power supply equipment disclosed in the embodiment comprises a generator set and a battery pack, the generator set comprises a permanent magnet motor, an engine and a starting module, the starting module adopts a starting motor, the battery pack can supply power for the starting motor, the starting motor provides initial power for the engine, the engine drives the rotor of the permanent magnet motor to rotate, so that the coil of the permanent magnet motor generates three-phase alternating current.

[0038] In other embodiments, the starting module can also adopt a reverse tow starting sub-module, the reverse tow starting sub-module introduces instantaneous current into the winding of the permanent magnet motor, so that it generates a reverse magnetic field, and the rotor of the permanent magnet motor accelerates and starts in a relatively short time through the reverse magnetic field.

[0039] Among them, the inverter is arranged between the permanent magnet motor and the alternating current output end, the inverter comprises a rectification and voltage stabilization module (adopting a three-phase half-controlled rectification module) and an inverter module (adopting a full-bridge inverter module) connected in sequence with the permanent magnet motor; a direct current voltage boosting module is arranged between the output end of the battery pack and the direct current output end of the inverter; the rectification and voltage stabilization module can convert alternating current into direct current, and when the load changes, the stability of the output current can be maintained by adjusting the control angle, which is suitable for occasions requiring accurate current control; the direct current is converted into alternating current through the inverter module, and power supply can be carried out.

[0040] The battery pack is detachably installed on the generator set, and the battery pack is provided with a USB-A / B TYPE-C interface and an XT60 interface. Through the XT60 interface, the battery pack can be connected with the generator set (including a DC-DC module) at any time.

[0041] In the embodiment, the permanent magnet motor does not have a direct current auxiliary winding, does not charge the battery pack, and only outputs alternating current. The direct current is provided by the battery pack. The battery pack can be connected in parallel with the generator after being boosted to output alternating current, or can output alternating current alone.

[0042] Embodiment two:

[0043] Referring to FIGS. Figure 2 , Figure 3 As shown in the first embodiment, the hybrid power supply device disclosed in the embodiment is connected between the output end of a single winding of the permanent magnet motor of the generator set and the input end of the battery pack. A direct current charging module (an AC-DC module) is arranged. The alternating current generated by the generator set is converted into direct current by the direct current charging module. The permanent magnet motor of the generator set has a direct current auxiliary winding. After the battery pack is charged by the generator set, direct current is output. The related structure for outputting direct current outside the original generator set can be cancelled, and the cost is saved.

[0044] In the embodiment, the working states are as follows:

[0045] a. When no battery pack is connected, the generator set is started by hand pulling, and direct current is output.

[0046] B. When the battery pack is connected but the battery pack is not powered on by the battery pack key, the battery pack has no power output, and the generator set outputs direct current by hand pulling.

[0047] C. When the battery pack is connected and the key is turned on: 1. The generator set can be started by electricity to output direct current; 2. When the generator set is not started, the battery pack can output direct current after being boosted by a boost module; 3. When a inductive load is started, the battery pack can assist the generator to start the inductive load. After starting, the battery pack is turned off the direct current boost module, so that the generator set alone carries the load; 4. When the direct current load is carried alone, the power is lower than 20%, and the power is lower than 10% when the surface lamp is turned off.

[0048] D. Battery pack charging: the generator set can charge the battery pack after being started, an external charger can charge the battery pack, and a Type-C interface can charge.

[0049] Embodiment three:

[0050] Referring to FIGS. Figure 4 , Figure 5As shown in the second embodiment, in the hybrid power supply device disclosed in this embodiment, the DC boost module is replaced with a bidirectional DC-DC module. The bidirectional DC-DC module includes a boost / buck submodule and a rectifier and regulator submodule connected in sequence with the battery pack. The AC power generated by the generator set is converted into DC power by the rectifier and regulator module, and then stepped down by the rectifier and regulator submodule and the boost / buck module to supply power to the battery pack or load. The DC power output by the battery pack can be boosted by the boost / buck module and the rectifier and regulator submodule, and then converted into AC power by DC-AC to supply power to the load. Therefore, when the battery pack and the generator set are supplying power in this embodiment, they can output DC power separately. The battery pack can be boosted and connected in parallel with the generator set to output AC power, and the generator set can be stepped down and connected in parallel with the battery pack to output DC power.

[0051] In this embodiment, the working state is as follows:

[0052] a. When no battery pack is connected, the generator set can be started manually, outputting DC or AC power;

[0053] b. If the battery pack is connected but the power button is not pressed, the battery pack will not output power. If the generator set is started by pulling the lever, the output will be either DC or AC.

[0054] c. With the battery pack on, press the power button: 1. The generator set can be electrically started and output DC or AC power; 2. When the generator set is not started, the battery pack can output DC power after passing through the bidirectional DC-DC module and then inverting; 3. When starting an inductive load, the battery pack can assist the generator set in starting the inductive load. After starting, the battery pack shuts off the bidirectional DC-DC module, allowing the generator set to carry the load independently; 4. When the generator set has power margin while carrying a load, it can charge the battery pack through the bidirectional DC-DC module and output AC power; 5. When the battery pack is carrying a DC or AC load independently, if the battery level is below 20%, it will be alerted by the indicator light. If a generator set is connected, it can automatically start the generator to charge the battery pack. At the same time, the generator can carry the load and charge the battery. If no generator is connected, the DC or AC power output will be shut off when the battery level is below 10%.

[0055] d. Battery pack charging: After the generator set starts, the battery pack can be charged through a bidirectional DC-DC module, an external charger, a Type-C interface, a solar interface, etc.

[0056] e. The machine can output both DC and AC power simultaneously.

[0057] 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 hybrid power supply device comprising a generator set and a battery pack, characterized in that: the battery pack is detachably mounted on the generator set, and the battery pack and the generator set can be used separately or in combination, the battery pack can output direct current alone or output alternating current through an inverter of the generator set after being boosted, and the generator set can output alternating current alone or output alternating current through the inverter in parallel with the battery pack; the battery pack can be charged by direct current.

2. The hybrid power supply device according to claim 1, characterized in that: the battery pack can be used as a starting power supply for an engine of the generator set, and can supply power to a starting module of the engine to start the engine; the starting module adopts a starting motor or a reverse-towing starting sub-module.

3. The hybrid power supply device according to claim 1, characterized in that: the generator set can charge the battery pack.

4. The hybrid power supply device according to claim 1, characterized in that: the generator set can output direct current alone or output direct current in parallel with the battery pack after being stepped down.

5. The hybrid power supply device according to claim 1, characterized in that: the inverter comprises a rectification and voltage stabilization module and an inverter module connected in sequence with the generator set, and a direct current boosting module is connected between the battery pack and an output end of the rectification and voltage stabilization module; three-phase alternating current generated by the generator set is converted into direct current by the rectification and voltage stabilization module, and then is output as alternating current alone by the inverter module, and direct current output by the battery pack is boosted by the direct current boosting module, and then is output as alternating current alone by the inverter module or is output as alternating current in parallel with the generator set after being boosted by the direct current boosting module.

6. The hybrid power supply device according to claim 3, characterized in that: a direct current charging module is connected between an output end of the generator set and an input end of the battery pack.

7. The hybrid power supply device according to claim 4, characterized in that: the inverter comprises a rectification and voltage stabilization module and an inverter module connected in sequence with the generator set, a bidirectional DC-DC module is connected between the battery pack and an output end of the rectification and voltage stabilization module, and the bidirectional DC-DC module is connected to a direct current output end; when the hybrid power supply device outputs alternating current: three-phase alternating current generated by the generator set is converted into direct current by the rectification and voltage stabilization module, and then is output as alternating current alone by the inverter module; direct current output by the battery pack is boosted by the bidirectional DC-DC module, and then is output as alternating current alone by the inverter module or is output as alternating current in parallel with the generator set after being boosted by the bidirectional DC-DC module; when the hybrid power supply device outputs direct current: three-phase alternating current generated by the generator set is converted into direct current by the rectification and voltage stabilization module, and then is stepped down by the bidirectional DC-DC module and is output as direct current alone or is used to charge the battery pack or is stepped down by the bidirectional DC-DC module and is output as direct current in parallel with the battery pack.

8. The hybrid power supply device according to claim 7, characterized in that: the rectification and voltage stabilization module adopts a three-phase half-controlled rectification module, the inverter module adopts a full-bridge inverter module, and the bidirectional DC-DC module comprises a boosting / stepping-down sub-module and a rectification and voltage stabilization sub-module.

9. The hybrid power supply device according to claim 6, characterized in that: A direct current charging module is connected between the output end of a single winding of the permanent magnet motor of the generator set and the input end of the battery pack.

10. The hybrid power supply device according to claim 7, characterized in that: The battery pack is provided with at least one of a USB-A / B, TYPE-C, XT60 interface, facilitating direct output / input.

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