Power generation system for personal portable equipment

Abstract

The utility model discloses a power generation system for personal portable equipment. The power generation system comprises a metal air battery module, an energy storage battery module, an electric energy control management module, a first bidirectional DC / DC converter module, a second bidirectional DC / DC converter module, a third DC / DC converter module, a fourth DC / DC converter module and a bidirectional DC / AC converter module, the energy storage battery module supplies power to the first bidirectional DC / DC converter module, the second bidirectional DC / DC converter module and the fourth DC / DC converter module. The metal-air battery module and the external mains supply are used for charging the energy storage battery module; the electric energy control management module is provided with a plurality of input ports which are respectively connected to a power supply port of the direct current / alternating current converter module, a power supply port of the direct current / direct current converter module, a power supply port of the metal air battery module and a power supply port of the energy storage battery module; and when the power generation system outputs multiple paths of different voltages to the outside, the electric energy control management module controls the discharge of the energy storage battery.

Description

Technical Field

[0001] This utility model relates to the field of personal portable power generation equipment technology, and specifically to a power generation system for personal portable devices. Background Technology

[0002] Existing external power supply structures for personal portable devices are relatively simple, and they are not equipped with generators or battery packs. When the battery is damaged, it will affect the normal operation of the entire external power supply system. The inverters of existing external power supplies are large and heavy, and they lack backup DC power. Failure of the connected external AC power supply will render the external power supply equipment unusable.

[0003] The current maintenance requirements for outdoor electrical equipment necessitate the provision of emergency power supply equipment with multiple energy sources and multiple voltage outputs. Utility Model Content

[0004] This utility model provides a power generation system for personal portable devices. The power generation system includes: a metal-air battery module, an energy storage battery module, a power control and management module, a first bidirectional DC / DC converter module, a second bidirectional DC / DC converter module, a third DC / DC converter module, a fourth DC / DC converter module, and a bidirectional DC / AC converter module.

[0005] The energy storage battery module supplies power to the first bidirectional DC / DC converter module, the second bidirectional DC / DC converter module, and the fourth DC / DC converter module to provide DC outputs of different voltages and currents.

[0006] The metal-air battery module and the external AC power supply are used to charge the energy storage battery module.

[0007] The power control and management module has multiple input ports, which are respectively connected to the power ports of the DC / AC converter module, the DC / DC converter module, the metal-air battery module, and the energy storage battery module.

[0008] When the power generation system is connected to an external power input, the power control and management module can control the charging of the energy storage battery; when the power generation system outputs multiple different voltages to the outside, the power control and management module controls the discharging of the energy storage battery.

[0009] As described in this utility model, the first bidirectional DC / DC converter module, the second bidirectional DC / DC converter module, the third DC / DC converter module, and the fourth DC / DC converter module all include a first DC power port and a second DC power port. The bidirectional DC / AC converter module includes both a DC power port and an AC power port. Each power port of the first bidirectional DC / DC converter module, the second bidirectional DC / DC converter module, and the bidirectional DC / AC converter is controlled by a power control and management module and serves as a power input interface or a power output port at different times.

[0010] When the first DC power port of the first bidirectional DC / DC converter module is connected to the first external DC power supply, the second DC power port of the first bidirectional DC / DC converter module outputs the second DC voltage.

[0011] The DC power port of the bidirectional DC / AC converter module is connected to the first DC power port of the second bidirectional DC / AC converter module. When the AC power port of the bidirectional DC / AC converter module is connected to an external AC power source, the DC power port of the bidirectional DC / AC converter module provides a first DC voltage.

[0012] When the first DC power port of the second bidirectional DC / DC converter module receives the first DC voltage, the second DC power port of the second bidirectional DC / DC converter module outputs the second DC voltage.

[0013] The first DC power port of the third DC / DC converter module is connected to the power port of the metal-air battery module. When the metal-air battery module is started, the second DC power port of the third DC / DC converter module outputs a second DC voltage.

[0014] The second DC voltage provides the charging voltage to the energy storage battery module.

[0015] As described in this utility model, when the power supply port of the energy storage battery module supplies power to the second DC power supply port of the first bidirectional DC / DC converter module, the second DC power supply port of the second bidirectional DC / DC converter module, and the first DC power supply port of the fourth DC / DC converter module;

[0016] The first DC power port of the first bidirectional DC / DC converter module outputs a first DC output voltage.

[0017] The first DC power port of the second bidirectional DC / DC converter module outputs a first DC voltage to the DC power port of the bidirectional DC / AC converter module, and the AC power port of the bidirectional DC / AC converter module outputs an AC voltage.

[0018] The second DC power supply port of the fourth DC / DC converter module outputs the second DC output voltage.

[0019] As described in this utility model, the first DC output voltage level is 24V, 10A; the second DC output voltage level is 5V, 4A; and the output AC voltage is 220V.

[0020] In the power generation system described in this utility model, the first bidirectional DC / DC converter module adopts a multi-phase interleaved half-bridge buck-boost circuit, and the switching transistor uses a high-power silicon carbide MOSFET.

[0021] In the power generation system described in this utility model, the second bidirectional DC / DC converter module uses a CLLLC full-bridge resonant converter, the input / output uses transformer isolation, and the switching transistor uses a silicon carbide MOSFET.

[0022] As described in this utility model, the bidirectional DC / AC converter module adopts a totem-pole bridgeless PFC converter, the switching transistors at the power frequency power supply end use silicon-based fast recovery diodes or silicon-based MOSFETs, and the switching transistors at the high frequency end use silicon carbide MOSFETs.

[0023] The power generation system described in this utility model further includes an intelligent charger and a hand-cranked generator as spare parts; the hand-cranked generator can be connected to the first bidirectional DC / DC converter module to charge the energy storage battery module through the first bidirectional DC / DC converter module.

[0024] The smart charger can connect to the DC voltage output by the first bidirectional DC / DC converter module to generate multiple charging voltages to charge the battery to be charged.

[0025] As described in this utility model, the DC / DC converter inside the intelligent charger is divided into a front stage and a rear stage. The front stage is a Buck-Boost circuit, and the rear stage is a Buck circuit.

[0026] The power generation system described in this utility model comprises a metal-air battery module, an energy storage battery module, and an energy control and management module integrated into a single structure.

[0027] The present invention has the following advantages: This power generation system has three power inputs and three voltage outputs; AC input and output, and DC input and output share the same interface; it also includes a metal-air battery for power supply. All charging and discharging are controlled by the power control and management module. Even without any input, this power generation system can be charged by a hand-cranked generator's energy storage battery.

[0028] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0029] Figure 1 Block diagram of the main unit of the power generation system of this utility model;

[0030] Figure 2 The circuit diagram of the multiphase interleaved half-bridge step-up / step-down circuit of this utility model;

[0031] Figure 3 The electrical schematic diagram of the CLLLC full-bridge resonant circuit of this utility model;

[0032] Figure 4 The circuit diagram of the bridgeless PFC circuit of the totem pole of this utility model;

[0033] Figure 5 The electrical schematic diagram of the intelligent charger of this utility model. Detailed Implementation

[0034] This power generation system has three different power inputs and simultaneously provides three output voltages. The three power inputs include: a single-phase 230V AC mains input, a 24V DC input, or a 24V DC output from a metal-air battery. The system can be controlled by the power control management module to charge its energy storage battery using one of these three voltages. It can also charge the energy storage battery simultaneously using both a single-phase 230V AC mains input and a 24V DC input. The three output voltages powered by the energy storage battery are: AC 230V / 4.35A output, DC 24V / 10A output, and DC 5V / 4A output. The AC 230V input is connected to a bidirectional converter, forming a shared interface for both input and output. The DC 24V input and DC 24V / 10A output also share the same interface. When a load with AC 230V or DC 24V requires power, the system can also output electrical energy. All charging and discharging is controlled by the power control and management module.

[0035] Without any input, the included hand-cranked generator can produce 30W of DC 24V, which can be used to charge the energy storage battery via the DC 24V input. The accessories also include a smart charger that can draw power from the energy storage battery via the DC 24V output to charge rechargeable batteries of three different voltage levels: 3.6V / 2.5A, 7.2V / 1A, and 14.4V / 1A.

[0036] The technical solution of this utility model will be clearly and completely described below with reference to specific implementation schemes. However, those skilled in the art should understand that the implementation schemes described below are only for illustrating this utility model and should not be regarded as limiting the scope of this utility model. Based on the implementation schemes of this utility model, all other implementation schemes obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] Example 1

[0038] Appendix Figure 1 This is a block diagram of the main unit of the power generation system of this utility model.

[0039] This utility model provides a power generation system for personal portable devices. The power generation system includes: a metal-air battery module, an energy storage battery module, a power control and management module, a first bidirectional DC / DC converter module, a second bidirectional DC / DC converter module, a third DC / DC converter module, a fourth DC / DC converter module, and a bidirectional DC / AC converter module.

[0040] The energy storage battery module supplies power to the first bidirectional DC / DC converter module, the second bidirectional DC / DC converter module, and the fourth DC / DC converter module to provide DC outputs of different voltages and currents.

[0041] The metal-air battery module and the external AC power supply are used to charge the energy storage battery module.

[0042] The power control and management module has multiple input ports, which are respectively connected to the power ports of the DC / AC converter module, the DC / DC converter module, the metal-air battery module, and the energy storage battery module.

[0043] When the power generation system is connected to an external power input, the power control and management module can control the charging of the energy storage battery; when the power generation system outputs multiple different voltages to the outside, the power control and management module controls the discharging of the energy storage battery.

[0044] The power control and management module is responsible for determining whether the AC 230V interface is an input or output, whether the first DC 24V interface is an input or output, and whether the metal-air battery is charging the energy storage battery. If any of the three input voltages has a voltage input, the power control and management module manages the charging mode of the energy storage battery, including trickle charging, constant current charging, and constant voltage charging. When the output voltage of any of the three output voltages is used, the power control and management module manages the discharge of the energy storage battery to prevent over-discharge.

[0045] As described in this utility model, the first bidirectional DC / DC converter module, the second bidirectional DC / DC converter module, the third DC / DC converter module, and the fourth DC / DC converter module all include a first DC power port and a second DC power port. The bidirectional DC / AC converter module includes both a DC power port and an AC power port. Each power port of the first bidirectional DC / DC converter module, the second bidirectional DC / DC converter module, and the bidirectional DC / AC converter is controlled by a power control and management module and serves as a power input interface or a power output port at different times.

[0046] When the first DC power port of the first bidirectional DC / DC converter module is connected to the first external DC power supply, the second DC power port of the first bidirectional DC / DC converter module outputs a second DC voltage; preferably, the range of the second DC voltage is 36.8 to 58.4V.

[0047] The DC power port of the bidirectional DC / AC converter module is connected to the first DC power port of the second bidirectional DC / AC converter module. When the AC power port of the bidirectional DC / AC converter module is connected to an external AC power source, the DC power port of the bidirectional DC / AC converter module provides a first DC voltage; the first DC voltage is preferably 400V.

[0048] When the first DC power port of the second bidirectional DC / DC converter module receives the first DC voltage, the second DC power port of the second bidirectional DC / DC converter module outputs the second DC voltage.

[0049] The first DC power port of the third DC / DC converter module is connected to the power port of the metal-air battery module. When the metal-air battery module is started, the second DC power port of the third DC / DC converter module outputs a second DC voltage.

[0050] The second DC voltage provides the charging voltage to the energy storage battery module.

[0051] The first bidirectional DC / DC converter module includes a multi-phase interleaved half-bridge buck-boost circuit. This circuit is a single-stage non-isolated DC / DC converter, simple and efficient. The multi-phase interleaving significantly reduces ripple current. While the number of components increases significantly, the current stress and size of individual components are reduced significantly, making it suitable for flat design. This circuit is widely used in bidirectional energy storage systems. Figure 2 A schematic diagram of a multiphase interleaved half-bridge buck-boost circuit is provided. Among them, Q1-Q4 use 100V, 30A silicon carbide MOSFETs with on-resistance in the tens of mΩ range, which can significantly increase the switching frequency, greatly reduce the size and weight of the power supply system, and increase the energy density.

[0052] Appendix Figure 3 This is the circuit diagram of the CLLLC full-bridge resonant circuit used in the converter inside the second bidirectional DC / DC converter module. The CLLLC full-bridge resonant circuit can achieve input / output isolation, adopts high-power, high-frequency soft-switching DC / DC bidirectional energy conversion, has high transformer utilization, and can achieve the highest efficiency conversion by supplementing the secondary side synchronous rectification, while reducing electromagnetic compatibility pressure.

[0053] The CLLLC full-bridge resonant circuit uses 100V, 30A silicon carbide MOSFETs with on-resistance in the tens of mΩ range for Q1-Q4, and 650V, 10A silicon carbide MOSFETs with on-resistance in the tens of mΩ range for Q5-Q8. This reduces the size and weight of the power supply system and increases energy density. Due to the increased switching frequency, L1, L2, and T1 are wound with ferrite cores, significantly reducing size and weight while increasing energy density.

[0054] Example 2

[0055] Appendix Figure 4 This is the circuit diagram of a totem-pole bridgeless PFC circuit used in the internal converter of a bidirectional DC / AC converter module. Q1 and Q2 in the totem-pole bridgeless PFC circuit are power frequency switching devices, employing silicon-based fast recovery diodes or silicon-based MOSFETs for synchronous rectification. Q3 and Q4 are high-frequency switching devices, using silicon carbide MOSFETs to improve switching speed and reduce switching losses. This circuit features short switching periods, low losses, high efficiency, and low current harmonic content. All switching devices are controllable, enabling bidirectional energy flow. The silicon carbide MOSFETs have very low on-resistance, reducing conduction losses. L1 uses an iron-silicon-aluminum magnetic core wound filter inductor with a narrow hysteresis loop, which can increase the magnetization frequency, thereby reducing size and weight and increasing power density.

[0056] As described in this utility model, when the power supply port of the energy storage battery module supplies power to the second DC power supply port of the first bidirectional DC / DC converter module, the second DC power supply port of the second bidirectional DC / DC converter module, and the first DC power supply port of the fourth DC / DC converter module;

[0057] The first DC power port of the first bidirectional DC / DC converter module outputs a first DC output voltage.

[0058] The first DC power port of the second bidirectional DC / DC converter module outputs a first DC voltage to the DC power port of the bidirectional DC / AC converter module, and the AC power port of the bidirectional DC / AC converter module outputs an AC voltage.

[0059] The second DC power supply port of the fourth DC / DC converter module outputs the second DC output voltage.

[0060] As described in this utility model, the first DC output voltage level is 24V, 10A; the second DC output voltage level is 5V, 4A; and the output AC voltage is 220V.

[0061] In the power generation system described in this utility model, the first bidirectional DC / DC converter module adopts a multi-phase interleaved half-bridge buck-boost circuit, and the switching transistor uses a high-power silicon carbide MOSFET.

[0062] In the power generation system described in this utility model, the second bidirectional DC / DC converter module uses a CLLLC full-bridge resonant converter, the input / output uses transformer isolation, and the switching transistor uses a silicon carbide MOSFET.

[0063] As described in this utility model, the bidirectional DC / AC converter module adopts a totem-pole bridgeless PFC converter, the switching transistors at the power frequency power supply end use silicon-based fast recovery diodes or silicon-based MOSFETs, and the switching transistors at the high frequency end use silicon carbide MOSFETs.

[0064] The power generation system described in this utility model further includes an intelligent charger and a hand-cranked generator as spare parts; the hand-cranked generator can be connected to the first bidirectional DC / DC converter module to charge the energy storage battery module through the first bidirectional DC / DC converter module.

[0065] The smart charger can connect to the DC voltage output by the first bidirectional DC / DC converter module to generate multiple charging voltages to charge the battery to be charged.

[0066] As described in this utility model, the DC / DC converter inside the intelligent charger is divided into a front stage and a rear stage. The front stage is a Buck-Boost circuit, and the rear stage is a Buck circuit.

[0067] The power generation system described in this utility model comprises a metal-air battery module, an energy storage battery module, and an energy control and management module integrated into a single structure.

[0068] The metal-air battery has a start-up time of less than 10 seconds, an output voltage of DC 24V, an output power of ≥50W, and a capacity of 2.0kWh.

[0069] Example 3

[0070] Appendix Figure 5 This is the circuit diagram of a smart charger. The smart charger uses a two-stage design: a Buck-Boost topology circuit in the front stage and a standard Buck topology circuit in the back stage. The voltage across capacitor C2 is controlled at a constant 16V. When the input voltage is below 16V, Q1 is normally on, and Q2 is chopped, forming a Boost circuit. When the input voltage is above 16V, Q2 is normally open, and Q1 is chopped, forming a Buck circuit. The standard Buck topology circuit in the back stage enables constant current and constant voltage charging for the three types of batteries.

[0071] The hand-cranked generator has an output DC voltage of 24V±1V and an output of 20W-30W.

[0072] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A power generation system for a personal portable device, characterized in that, The power generation system includes: a metal-air battery module, an energy storage battery module, a power control and management module, a first bidirectional DC / DC converter module, a second bidirectional DC / DC converter module, a third DC / DC converter module, a fourth DC / DC converter module, and a bidirectional DC / AC converter module; The energy storage battery module supplies power to the first bidirectional DC / DC converter module, the second bidirectional DC / DC converter module, and the fourth DC / DC converter module to provide DC outputs of different voltages and currents. The metal-air battery module and the external AC power supply are used to charge the energy storage battery module. The power control and management module has multiple input ports, which are respectively connected to the power ports of the DC / AC converter module, the DC / DC converter module, the metal-air battery module, and the energy storage battery module. When the power generation system is connected to an external power input, the power control and management module can control the charging of the energy storage battery; when the power generation system outputs multiple different voltages to the outside, the power control and management module controls the discharging of the energy storage battery.

2. The power generation system as described in claim 1, characterized in that, The first, second, third, and fourth bidirectional DC / DC converter modules each include a first DC power port and a second DC power port. The bidirectional DC / AC converter module includes both a DC power port and an AC power port. Each power port of the first, second, and fourth bidirectional DC / DC converter modules and the bidirectional DC / AC converter is controlled by a power control and management module and serves as a power input interface or a power output port at different times. When the first DC power port of the first bidirectional DC / DC converter module is connected to the first external DC power supply, the second DC power port of the first bidirectional DC / DC converter module outputs the second DC voltage. The DC power port of the bidirectional DC / AC converter module is connected to the first DC power port of the second bidirectional DC / AC converter module. When the AC power port of the bidirectional DC / AC converter module is connected to an external AC power source, the DC power port of the bidirectional DC / AC converter module provides a first DC voltage. When the first DC power port of the second bidirectional DC / DC converter module receives the first DC voltage, the second DC power port of the second bidirectional DC / DC converter module outputs the second DC voltage. The first DC power port of the third DC / DC converter module is connected to the power port of the metal-air battery module. When the metal-air battery module is started, the second DC power port of the third DC / DC converter module outputs a second DC voltage. The second DC voltage provides the charging voltage to the energy storage battery module.

3. The power generation system as described in claim 2, characterized in that, When the power port of the energy storage battery module supplies power to the second DC power port of the first bidirectional DC / DC converter module, the second DC power port of the second bidirectional DC / DC converter module, and the first DC power port of the fourth DC / DC converter module; The first DC power port of the first bidirectional DC / DC converter module outputs a first DC output voltage. The first DC power port of the second bidirectional DC / DC converter module outputs a first DC voltage to the DC power port of the bidirectional DC / AC converter module, and the AC power port of the bidirectional DC / AC converter module outputs an AC voltage. The second DC power supply port of the fourth DC / DC converter module outputs the second DC output voltage.

4. The power generation system as described in claim 3, characterized in that, The first DC output voltage level is 24V, 10A; the second DC output voltage level is 5V, 4A; and the output AC voltage is 220V.

5. The power generation system as described in claim 2, characterized in that, The first bidirectional DC / DC converter module adopts a multi-phase interleaved half-bridge buck-boost circuit, and the switching transistor uses a high-power silicon carbide MOSFET.

6. The power generation system as described in claim 2, characterized in that, The second bidirectional DC / DC converter module uses a CLLLC full-bridge resonant converter, with input / output transformer isolation and silicon carbide MOSFETs as the switching transistors.

7. The power generation system as described in claim 2, characterized in that, The bidirectional DC / AC converter module adopts a totem-pole bridgeless PFC converter. The switching transistors at the power frequency end use silicon-based fast recovery diodes or silicon-based MOSFETs, while the switching transistors at the high frequency end use silicon carbide MOSFETs.

8. The power generation system as described in claim 1, characterized in that, The power generation system also includes a smart charger and a hand-cranked generator as spare parts; the hand-cranked generator can be connected to the first bidirectional DC / DC converter module to charge the energy storage battery module through the first bidirectional DC / DC converter module; The smart charger can connect to the DC voltage output by the first bidirectional DC / DC converter module to generate multiple charging voltages to charge the battery to be charged.

9. The power generation system as described in claim 8, characterized in that, The DC / DC converter inside the smart charger is divided into a front stage and a back stage. The front stage is a Buck-Boost circuit, and the back stage is a Buck circuit.

10. The power generation system as claimed in claim 1, characterized in that, The power generation system comprises a metal-air battery module, an energy storage battery module, and an energy control and management module, all integrated into a single structure.

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