CN217545593U - Power supply system - Google Patents
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- CN217545593U CN217545593U CN202221436299.1U CN202221436299U CN217545593U CN 217545593 U CN217545593 U CN 217545593U CN 202221436299 U CN202221436299 U CN 202221436299U CN 217545593 U CN217545593 U CN 217545593U
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Abstract
The utility model discloses a power supply system. The power supply system includes: the device comprises a power supply module and a control module; the power supply module comprises at least two power supply units; different power supply units have different power generation modes; the first output end of the power supply module is connected with a load, the control module is connected with the power supply module, and the control module is configured to collect the electrical parameters of the power supply units and control any power supply unit to supply power to the load when determining that the power of one power supply unit meets the target power of the load; when the power of one power supply unit is determined to be smaller than the target power, controlling at least two power supply units to be connected in parallel and then supplying power to the load; wherein the electrical parameters include voltage, current, and power. The utility model discloses technical scheme has realized the combination use of multiple new forms of energy power generation equipment, adopts new forms of energy power generation equipment can satisfy extensive power supply demand, has reduced pollutant discharge.
Description
Technical Field
The utility model relates to a power supply technical field especially relates to a power supply system.
Background
CO generated along with the pollution to ship 2 、NO X ,SO X The requirements on the emission of gases are more and more strict, green and environment-friendly technologies such as solar photovoltaic systems, hydrogen fuel cell system lithium batteries, methanol fuels and other green and environment-friendly new energy resources rise rapidly, and are also applied to ships more and more.
At present, the new energy is usually only used as a standby power supply of the traditional fuel, and has small scale, small capacity and dispersion, and the requirement of large-scale power supply cannot be met in the aspect of power supply, so that the requirement of green and environment-friendly emission cannot be met fundamentally.
SUMMERY OF THE UTILITY MODEL
The utility model provides a power supply system to realize the combined use of multiple new forms of energy, reduce pollutant discharge.
The utility model provides a power supply system, power supply system includes: the device comprises a power supply module and a control module; the power supply module comprises at least two power supply units; the power generation modes of different power supply units are different;
the first output end of the power supply module is connected with a load, the control module is connected with the power supply module, and the control module is configured to collect the electrical parameters of the power supply units and control any one of the power supply units to supply power to the load when determining that the power of one of the power supply units meets the target power of the load; when the power of one power supply unit is determined to be smaller than the target power, controlling at least two power supply units to be connected in parallel and then supplying power to the load; wherein the electrical parameters include voltage, current, and power.
Optionally, the power supply system further comprises an energy storage module;
the second output end of the power supply module is connected with the input end of the energy storage module, and the control module is configured to control the power supply module to supply power to the energy storage module when the electric quantity of the power supply module is larger than the target electric quantity of the load;
the output end of the energy storage module is connected with the load, the control module is connected with the energy storage module, and the control module is configured to control the energy storage module to supply power to the load when the power of the power supply module is smaller than the target power.
Optionally, at least two of the power supply units comprise a photovoltaic power supply unit, a hydrogen fuel cell unit, a power lithium battery unit and a methanol power generation unit; the photovoltaic power supply unit comprises a photovoltaic cell panel, a first voltage converter, a first switch and a second switch;
the output end of the photovoltaic cell panel is electrically connected with the input end of the first voltage converter, the photovoltaic cell panel is used for outputting a first direct current voltage, and the first voltage converter is used for converting the first direct current voltage into a second direct current voltage;
a first output end of the first voltage converter is electrically connected with a first end of the first switch, a second end of the first switch is electrically connected with the load, a control end of the first switch is electrically connected with the control module, and the control module is configured to control the first switch to be switched on or switched off according to target power of the load;
the second output end of the first voltage converter is electrically connected with the first end of the second switch, the second end of the second switch is electrically connected with the input end of the energy storage module, the control end of the second switch is electrically connected with the control module, and the control module is configured to control the second switch to be closed when the electric quantity of the photovoltaic power supply unit is larger than the target electric quantity of the load, so as to control the photovoltaic power supply unit to supply power to the energy storage module.
Optionally, the hydrogen fuel cell unit comprises a hydrogen fuel cell stack, a second voltage converter, a third switch, and a fourth switch;
the output end of the hydrogen fuel cell stack is electrically connected with the input end of the second voltage converter, the hydrogen fuel cell stack is used for outputting a third direct current voltage, and the second voltage converter is used for converting the third direct current voltage into a fourth direct current voltage;
the first output end of the second voltage converter is electrically connected with the first end of the third switch, the second end of the third switch is electrically connected with the load, the control end of the third switch is electrically connected with the control module, and the control module is configured to control the third switch to be switched on or switched off according to the target power of the load;
the second output end of the second voltage converter is electrically connected with the first end of the fourth switch, the second end of the fourth switch is electrically connected with the input end of the energy storage module, the control end of the fourth switch is electrically connected with the control module, and the control module is configured to control the fourth switch to be switched on and off when the electric quantity of the hydrogen fuel cell unit is larger than the target electric quantity of the load, so as to control the hydrogen fuel cell unit to supply power to the energy storage module.
Optionally, the power lithium battery unit comprises a power lithium battery pack, a third voltage converter, a fifth switch and a sixth switch;
the output end of the power lithium battery pack is electrically connected with the input end of the third voltage converter, the power lithium battery pack is used for outputting fifth direct-current voltage, and the third voltage converter is used for converting the fifth direct-current voltage into sixth direct-current voltage;
a first output end of the third voltage converter is electrically connected with a first end of the fifth switch, a second end of the fifth switch is electrically connected with the load, a control end of the fifth switch is electrically connected with the control module, and the control module is configured to control the fifth switch to be switched on or switched off according to target power of the load;
the second output end of the third voltage converter is electrically connected with the first end of the sixth switch, the second end of the sixth switch is electrically connected with the input end of the energy storage module, the control end of the sixth switch is electrically connected with the control module, and the control module is configured to control the sixth switch to be closed when the electric quantity of the power lithium battery unit is greater than the target electric quantity of the load, so as to control the power lithium battery unit to supply power to the energy storage module.
Optionally, the methanol power generation unit comprises a methanol power generator set, a seventh switch and an eighth switch;
a first output end of the methanol generator set is electrically connected with a first end of a seventh switch, a second end of the seventh switch is electrically connected with the load, a control end of the seventh switch is electrically connected with the control module, and the control module is configured to control the seventh switch to be turned on or turned off according to target power of the load;
the second output end of the methanol generator set is electrically connected with the first end of the eighth switch, the second end of the eighth switch is electrically connected with the input end of the energy storage module, the control end of the eighth switch is electrically connected with the control module, the control module is configured to control the eighth switch to be switched on and switched off when the electric quantity of the methanol generator unit is greater than the target electric quantity of the load, so as to control the methanol generator unit to supply power to the energy storage module.
Optionally, the energy storage module comprises an energy storage battery, a bidirectional voltage converter and a ninth switch;
the energy storage battery is electrically connected with a first end of the bidirectional voltage converter, and the bidirectional voltage converter is configured to convert a seventh direct-current voltage output by the energy storage battery into an eighth direct-current voltage;
the second end of the bidirectional voltage converter is connected with the power supply module, and the bidirectional voltage converter is used for outputting a voltage signal output by the power supply module to the energy storage battery;
the second end of the bidirectional voltage converter is electrically connected with the first end of the ninth switch, the second end of the ninth switch is electrically connected with the load, the control end of the ninth switch is electrically connected with the control module, and the control module is configured to control the ninth switch to be closed when the power of the power supply module is smaller than the target power.
Optionally, the power supply system further comprises a power distribution module;
the input end of the power distribution module is electrically connected with the first output end of the power supply module, the output end of the power distribution module is electrically connected with the load, and the power distribution module is configured to output the voltage signal output by the power supply module to the load.
Optionally, the power distribution module comprises an inverter;
a first output end of the photovoltaic power supply unit is connected with a first input end of the inverter, and a first output end of the inverter is connected with the load;
the first output end of the hydrogen fuel cell unit is connected with the second input end of the inverter, and the second output end of the inverter is connected with the load;
the first output end of the power lithium battery unit is connected with the third input end of the inverter, and the third output end of the inverter is connected with the load;
the output end of the energy storage module is connected with the fourth input end of the inverter, and the fourth output end of the inverter is connected with the load.
Optionally, the power supply system further comprises an alarm module;
the alarm module is connected with the control module, and the control module is configured to control the alarm module to send out an alarm signal when the electrical parameter is greater than a preset parameter.
According to the technical scheme of the embodiment of the utility model, the power supply system comprises a power supply module and a control module; the power supply module comprises at least two power supply units; the power generation modes of different power supply units are different; the control module can acquire the electrical parameters of each power supply unit in real time, such as the current, the voltage and the power output by the power supply unit; the control module compares the power output by the power supply units with the target power required by the load, and when the power output by one power supply unit meets the target power, the control module controls any power supply unit to supply power to the load; when the power output by one power supply unit is smaller than the target power, the control module controls at least two power supply units to be connected in parallel to supply power to the load; after at least two power supply units are connected in parallel, the output power of the power supply module can be improved, so that the power supply module can meet the requirement of large-scale power supply. And different power supply units are selected to supply power to the load, or at least two power supply units are controlled to supply power to the load after being connected in parallel, so that the power supply unit can be combined to supply power by adopting different power supply units, the combined use of various new energy power generation equipment is realized, and the pollutant emission is reduced. The utility model discloses technical scheme has solved as stand-by power supply with the new forms of energy, can't adopt new forms of energy power generation equipment to satisfy the problem of extensive power supply demand, has realized multiple new forms of energy power generation equipment's combination and has used, adopts new forms of energy power generation equipment can satisfy extensive power supply demand, has reduced pollutant emission.
It should be understood that the statements herein are not intended to identify key or critical features of any embodiment of the present invention, nor are they intended to limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power supply system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another power supply system according to an embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic structural diagram of a power supply system provided in an embodiment of the present invention, and referring to fig. 1, the power supply system includes a power supply module 100 and a control module 200; the power supply module 100 includes at least two power supply units 110; different power supply units 110 generate power in different ways; the first output end of the power supply module 100 is connected with the load 300, the control module 200 is connected with the power supply module 100, and the control module 200 is configured to collect the electrical parameters of the power supply units 110, and control any power supply unit 110 to supply power to the load 300 when determining that the power of one power supply unit 110 meets the target power of the load 300; when the power of one power supply unit 110 is determined to be smaller than the target power, at least two power supply units 110 are controlled to be connected in parallel to supply power to the load 300; wherein the electrical parameters include voltage, current, and power.
The at least two power supply units 110 have different power generation modes, and may include, for example, a photovoltaic power supply system using solar power generation, a methanol power generation unit using methanol combustion to generate power, a hydrogen fuel cell unit using a hydrogen fuel cell to generate power, a power lithium battery unit, and other new energy power supply units; the control module 200 is, for example, an energy management system, and the control module 200 may acquire the electrical parameters of each power supply unit 110 in real time, such as the current, the voltage, and the power output by the power supply unit 110, and may also acquire parameters such as temperature information and humidity information of each power supply unit 110. The load 300 is, for example, an electric device and a propulsion system on the ship, and the propulsion system drives the ship to operate, and may also be other loads, which is not limited in this embodiment.
Specifically, the control module 200 compares the power output by the power supply units 110 with a target power required by the load 300, and when the power output by one power supply unit 110 meets the target power, the control module 200 controls any power supply unit 110 to supply power to the load 300; when the power output by one power supply unit 110 is smaller than the target power, the control module 200 controls at least two power supply units 110 to be connected in parallel to supply power to the load 300; after at least two power supply units 110 are connected in parallel, the output power of the power supply module 100 can be increased, so that the power supply module 100 can meet the large-scale power supply requirement. In addition, different power supply units 110 are selected to supply power to the load 300, or at least two power supply units 110 are controlled to supply power to the load 300 after being connected in parallel, so that the combined power supply by using different power supply units 110 is realized, the combined use of various new energy power generation equipment is realized, and the pollutant emission is reduced.
According to the technical scheme of the embodiment, the power supply system comprises a power supply module and a control module; the power supply module comprises at least two power supply units; the power generation modes of different power supply units are different; the control module can acquire the electrical parameters of each power supply unit in real time, such as the current, the voltage and the power output by the power supply unit; the control module compares the power output by the power supply units with the target power required by the load, and when the power output by one power supply unit meets the target power, the control module controls any power supply unit to supply power to the load; when the power output by one power supply unit is smaller than the target power, the control module controls at least two power supply units to be connected in parallel to supply power to the load; after at least two power supply units are connected in parallel, the output power of the power supply module can be improved, so that the power supply module can meet the requirement of large-scale power supply. In addition, different power supply units are selected to supply power to the load, or at least two power supply units are controlled to be connected in parallel to supply power to the load, so that the power supply units are combined to supply power, the combined use of various new energy power generation equipment is realized, and the pollutant emission is reduced. The technical scheme of this embodiment has solved regard as stand-by power supply with the new forms of energy, can't adopt new forms of energy power generation equipment to satisfy the problem of extensive power supply demand, has realized the combined use of multiple new forms of energy power generation equipment, adopts new forms of energy power generation equipment can satisfy extensive power supply demand, has reduced pollutant discharge.
Fig. 2 is a schematic structural diagram of another power supply system provided in the embodiment of the present invention, and optionally, referring to fig. 2, the power supply system further includes an energy storage module 120; the second output end of the power supply module 100 is connected to the input end of the energy storage module 120, and the control module 200 is configured to control the power supply module 100 to supply power to the energy storage module 120 when the electric quantity of the power supply module 100 is greater than the target electric quantity of the load 300; the output end of the energy storage module 120 is connected to the load 300, the control module 200 is connected to the energy storage module 120, and the control module 200 is configured to control the energy storage module 120 to supply power to the load 300 when the power of the power supply module 100 is smaller than the target power.
Specifically, when the power of the power supply module 100 is greater than the target power of the load 300, the power supply module 100 may be controlled to supply power to the energy storage module 120 for storing energy; for example, in daytime, the photovoltaic power supply unit receives more solar energy and converts more electric energy, and the photovoltaic power supply unit can be controlled to supply power to the energy storage module 120. When the control module 200 determines that the output power of all the power supply units 110 is smaller than the target power, that is, the target power of the load 300 cannot be met after all the power supply units 110 are connected in parallel, the control module can control all the power supply units 110 to be connected in parallel and then connected in parallel with the energy storage module 120, and control the energy storage module 120 to supply power to the load 300, so as to improve the output power of the power supply system and meet the requirement of large-scale power supply.
Optionally, with continued reference to fig. 2, the at least two power supply units 110 include a photovoltaic power supply unit 130, a hydrogen fuel cell unit 140, a power lithium battery unit 150, and a methanol power generation unit 160; the photovoltaic power supply unit 130 includes a photovoltaic cell panel 131, a first voltage converter 132, a first switch 133, and a second switch 134; the output end of the photovoltaic cell panel 131 is electrically connected with the input end of the first voltage converter 132, the photovoltaic cell panel 131 is used for outputting a first direct current voltage, and the first voltage converter 132 is used for converting the first direct current voltage into a second direct current voltage; a first output end of the first voltage converter 132 is electrically connected to a first end of the first switch 133, a second end of the first switch 133 is electrically connected to the load 300, a control end of the first switch 133 is electrically connected to the control module 200, and the control module 200 is configured to control the first switch 133 to be turned on or off according to a target power of the load 300; the second output end of the first voltage converter 132 is electrically connected to the first end of the second switch 134, the second end of the second switch 134 is electrically connected to the input end of the energy storage module 120, the control end of the second switch 134 is electrically connected to the control module 200, and the control module 200 is configured to control the second switch 134 to be closed when the electric quantity of the photovoltaic power supply unit 130 is greater than the target electric quantity of the load 300, so as to control the photovoltaic power supply unit 130 to supply power to the energy storage module 120.
Specifically, the at least two power supply units 110 include, for example, a photovoltaic power supply unit 130, a hydrogen fuel cell unit 140, a power lithium battery unit 150, and a methanol power generation unit 160, which are all new energy power generation equipment, so that the emission of pollutants can be reduced; the power supply unit 110 may also be another new energy power generation unit, and the embodiment is not limited. The photovoltaic cell panel 131 may convert solar energy into electric energy and output a first direct current voltage, and the first voltage converter 132 may boost the first direct current voltage and convert the first direct current voltage into a second direct current voltage; when the photovoltaic power supply unit 130 is required to supply power to the load 300, the control module 200 may control the first switch 133 to be closed, so that the second direct-current voltage output by the first voltage converter 132 may be output to the load 300 to supply power to the load 300; when the photovoltaic power supply unit 130 is not needed to supply power to the load 300, the control module 200 controls the first switch 133 to be turned off. When the power of the photovoltaic power supply unit 130 is greater than the target power of the load 300, the control module 200 controls the second switch 134 to be closed, so that the second dc voltage output by the first voltage converter 132 can be output to the energy storage module 120, and the energy can be stored.
The first voltage converter 132 is, for example, a DC-DC converter, and can boost or buck, convert the first direct-current voltage into a second direct-current voltage, and output the second direct-current voltage. The control module 200 may compare voltages output from each of the power supply units 110, and may control the power supply units 110 to be connected in parallel when the voltages output from the power supply units 110 are identical.
Alternatively, with continued reference to fig. 2, the hydrogen fuel cell unit 140 includes a hydrogen fuel cell stack 141, a second voltage converter 142, a third switch 143, and a fourth switch 144; the output end of the hydrogen fuel cell stack 141 is electrically connected with the input end of the second voltage converter 142, the hydrogen fuel cell stack 141 is used for outputting a third direct current voltage, and the second voltage converter 142 is used for converting the third direct current voltage into a fourth direct current voltage; a first output terminal of the second voltage converter 142 is electrically connected to a first terminal of a third switch 143, a second terminal of the third switch 143 is electrically connected to the load 300, a control terminal of the third switch 143 is electrically connected to the control module 200, and the control module 200 is configured to control the third switch 143 to be turned on or off according to a target power of the load 300; a second output end of the second voltage converter 142 is electrically connected to a first end of the fourth switch 144, a second end of the fourth switch 144 is electrically connected to an input end of the energy storage module 120, a control end of the fourth switch 144 is electrically connected to the control module 200, and the control module 200 is configured to control the fourth switch 144 to be closed when the electric quantity of the hydrogen fuel cell unit 140 is greater than the target electric quantity of the load 300, so as to control the hydrogen fuel cell unit 140 to supply power to the energy storage module 120.
Specifically, the hydrogen fuel cell unit 140 may convert thermal energy generated by burning hydrogen into electric energy and output a third direct current voltage, and the second voltage converter 142, for example, a DC-DC converter, may boost or buck the voltage and convert the third direct current voltage into a fourth direct current voltage for output; when the hydrogen fuel cell unit 140 is required to supply power to the load 300, the control module 200 may control the third switch 143 to be closed, and the fourth dc voltage output by the second voltage converter 142 may be output to the load 300 to supply power to the load 300; when the hydrogen fuel cell unit 140 is not needed to supply power to the load 300, the control module 200 controls the third switch 143 to be turned off. When the power of the hydrogen fuel cell unit 140 is greater than the target power of the load 300, the control module 200 controls the fourth switch 144 to be closed, so that the fourth dc voltage output by the second voltage converter 142 can be output to the energy storage module 120, and the energy can be stored.
Optionally, with continued reference to fig. 2, the power lithium battery unit 150 includes a power lithium battery pack 151, a third voltage converter 152, a fifth switch 153, and a sixth switch 154; the output end of the power lithium battery pack 151 is electrically connected with the input end of the third voltage converter 152, the power lithium battery pack 151 is used for outputting a fifth direct current voltage, and the third voltage converter 152 is used for converting the fifth direct current voltage into a sixth direct current voltage; a first output end of the third voltage converter 152 is electrically connected to a first end of the fifth switch 153, a second end of the fifth switch 153 is electrically connected to the load 300, a control end of the fifth switch 153 is electrically connected to the control module 200, and the control module 200 is configured to control the fifth switch 153 to be turned on or turned off according to a target power of the load 300; a second output end of the third voltage converter 152 is electrically connected to a first end of the sixth switch 154, a second end of the sixth switch 154 is electrically connected to an input end of the energy storage module 120, a control end of the sixth switch 154 is electrically connected to the control module 200, and the control module 200 is configured to control the sixth switch 154 to be closed when the electric quantity of the power lithium battery unit 150 is greater than the target electric quantity of the load 300, so as to control the power lithium battery unit 150 to supply power to the energy storage module 120.
Specifically, the power lithium battery pack 151 includes multiple lithium batteries and can output a fifth larger direct current voltage, and the third voltage converter 152 is, for example, a DC-DC converter and can boost or buck the voltage and convert the fifth direct current voltage into a sixth direct current voltage for output; when the power lithium battery unit 150 is required to supply power to the load 300, the control module 200 may control the fifth switch 153 to be closed, so that the fourth direct-current voltage output by the third voltage converter 152 may be output to the load 300 to supply power to the load 300; when the power lithium battery unit 150 is not needed to supply power to the load 300, the control module 200 controls the fifth switch 153 to be turned off. When the electric quantity of the lithium power battery unit 150 is greater than the target electric quantity of the load 300, the control module 200 controls the sixth switch 154 to be closed, so that the sixth dc voltage output by the third voltage converter 152 can be output to the energy storage module 120, and the electric energy can be stored.
Alternatively, with continued reference to fig. 2, the methanol power generation unit 160 includes a methanol generator set 161, a seventh switch 162, and an eighth switch 163; a first output end of the methanol generator set 161 is electrically connected with a first end of a seventh switch 162, a second end of the seventh switch 162 is electrically connected with a load 300, a control end of the seventh switch 162 is electrically connected with the control module 200, and the control module 200 is configured to control the seventh switch 162 to be turned on or off according to a target power of the load 300; a second output end of the methanol generator set 161 is electrically connected to a first end of the eighth switch 163, a second end of the eighth switch 163 is electrically connected to an input end of the energy storage module 120, a control end of the eighth switch 163 is electrically connected to the control module 200, and the control module 200 is configured to control the eighth switch 163 to be closed when the electric quantity of the methanol generator unit 160 is greater than the target electric quantity of the load, so as to control the methanol generator unit 160 to supply power to the energy storage module 120.
Specifically, the methanol power generation unit 160 may convert heat energy generated by the combustion of methanol into electric energy and output an ac signal, and when the methanol power generation unit 160 is required to supply power to the load 300, the control module 200 may control the seventh switch 162 to be closed, so that the ac signal output by the methanol power generation unit 161 may be output to the load 300 to supply power to the load 300; when the methanol power generation unit 160 is not required to supply power to the load 300, the control module 200 controls the seventh switch 162 to be turned off. When the electric quantity of the methanol electric generating unit 160 is greater than the target electric quantity of the load 300, the control module 200 controls the eighth switch 164 to be closed, so that the alternating current signal output by the methanol electric generating set 161 can be output to the energy storage module 120, and the electric energy can be stored.
Optionally, with continued reference to fig. 2, the energy storage module 120 includes an energy storage battery 121, a bidirectional voltage converter 122, and a ninth switch 123; the energy storage battery 121 is electrically connected to a first end of a bidirectional voltage converter 122, and the bidirectional voltage converter 122 is configured to convert a seventh direct-current voltage output by the energy storage battery 121 into an eighth direct-current voltage; a second end of the bidirectional voltage converter 122 is connected to the power supply module 100, and the bidirectional voltage converter 122 is configured to output a voltage signal output by the power supply module 100 to the energy storage battery 121; the second terminal of the bidirectional voltage converter 122 is electrically connected to the first terminal of the ninth switch 123, the second terminal of the ninth switch 123 is electrically connected to the load 300, the control terminal of the ninth switch 123 is electrically connected to the control module 200, and the control module 200 is configured to control the ninth switch 123 to be closed when the power of the power supply module 100 is smaller than the target power.
Specifically, the energy storage module 120 includes, for example, an energy storage battery 121, where the energy storage battery 121 may be a storage battery or may be a low-voltage lithium battery, when the electric quantity of the power supply module 100 is greater than the target electric quantity of the load 300, the power supply module 100 may output a voltage signal to a bidirectional voltage converter 122, where the bidirectional voltage converter 122 is, for example, a bidirectional DC-DC converter, and may convert the voltage signal into a charging voltage of the energy storage battery 121 to charge the energy storage battery 121; when the power output by the power supply module 100 is smaller than the target power of the load 300, the control module 200 controls the ninth switch 123 to be closed, the energy storage battery 121 may output a seventh dc voltage, the bidirectional voltage converter 122 converts the seventh dc voltage into an eighth dc voltage, and outputs the eighth dc voltage to the load 300, so that the energy storage module 120 and the power supply module 100 jointly supply power to the load 300, and the large-scale power supply requirement is met.
Optionally, with continued reference to fig. 2, the power supply system further includes a power distribution module 170; the input terminal of the power distribution module 170 is electrically connected to the first output terminal of the power supply module 100, the output terminal of the power distribution module 170 is electrically connected to the load 300, and the power distribution module 170 is configured to output the voltage signal output by the power supply module 100 to the load.
Specifically, the power distribution module 170 may convert the first output terminal of each power supply unit 110 into a plurality of output channels, and output the voltage signal output by each power supply unit 110 from the plurality of output channels, so that each power supply unit 110 may supply power to a plurality of loads 300; and the control module 200 may acquire parameters of the connected load 300 from the power distribution module 170 to determine a target power and a target amount of power required by the load 300; when the power output by one power supply unit 110 meets the target power, the control module 200 controls any one power supply unit 110 to supply power to the load 300; when the power output by one power supply unit 110 is less than the target power, at least two power supply units 110 are controlled to be connected in parallel to supply power to the load 300.
For example, when the power output by one power supply unit 110 is less than the target power, the methanol power generation unit 160 may be controlled to be connected in parallel with the power lithium battery unit 150 to supply power to the load 300; the methanol power generation unit 160 can also be controlled to be connected in parallel with the hydrogen fuel cell unit 140 to supply power to the load 300; the methanol power generation unit 160 and the power lithium battery unit 150 can also be controlled to be connected in parallel with the hydrogen fuel battery unit 140 to supply power to the load 300, and combined power supply in other modes can be adopted, so that combined power supply in different modes is realized, different working modes are realized by the power supply module 100, and different power supply requirements are met.
Optionally, with continued reference to fig. 2, the power distribution module 170 includes an inverter 171; a first output end of the photovoltaic power supply unit 130 is connected with a first input end of the inverter 171, and a first output end of the inverter 171 is connected with the load 300; a first output terminal of the hydrogen fuel cell unit 140 is connected to a second input terminal of the inverter 171, and a second output terminal of the inverter 171 is connected to the load 300; a first output end of the power lithium battery unit 150 is connected with a third input end of the inverter 171, and a third output end of the inverter 171 is connected with the load 300; the output of the energy storage module 120 is connected to the fourth input of the inverter 171, and the fourth output of the inverter 171 is connected to the load 300.
Specifically, the electrical signals output by the photovoltaic power supply unit 130, the hydrogen fuel cell unit 140, the power lithium battery unit 150, and the energy storage module 120 are all direct current signals, and the inverter 171 may convert the second direct current voltage output by the photovoltaic power supply unit 130 into an alternating current signal and output the alternating current signal to the load 300; the inverter 171 converts the fourth direct-current voltage output from the hydrogen fuel cell unit 140 into an alternating-current signal, and outputs the alternating-current signal to the load 300; the inverter 171 converts the sixth dc voltage output from the power lithium battery unit 150 into an ac signal and outputs the ac signal to the load 300; the inverter 171 converts the eighth dc voltage output by the energy storage module 120 into an ac signal and outputs the ac signal to the load 300, so that the power supply system can better supply power to the load 300.
Optionally, with continued reference to fig. 2, the power supply system further comprises an alarm module 180; the alarm module 180 is connected to the control module 200, and the control module 200 is configured to control the alarm module 180 to send an alarm signal when the electrical parameter is greater than a preset parameter.
Specifically, the control module 200 may acquire the electrical parameters of the power supply module 100 in real time, for example, acquire parameters such as voltage, current, power, temperature information, humidity information, and the like of the power supply module 100, and may further include other parameters; when the control module 200 determines that the electrical parameter is greater than the preset parameter, the control module 200 controls the alarm module 180 to send an alarm signal to remind a worker to take a countermeasure in time, so that a major accident is avoided; for example, when the control module 200 determines that the current value of the power supply module 100 exceeds the preset current value, the power supply module 100 has an overcurrent problem, and the control module 200 controls the alarm module 180 to send an alarm signal; when the control module 200 determines that the temperature information of the power supply module 100 exceeds the preset temperature value, the temperature of the power supply module 100 is too high, and the control module 200 controls the alarm module 180 to send an alarm signal.
Optionally, with continued reference to fig. 2, the photovoltaic power supply unit 130 further includes a first control cabinet 135, the first control cabinet 135 is connected to the control terminal of the first switch 133, and the first control cabinet 135 is further connected to the control terminal of the second switch 134; the first switch 133 and the second switch 134 may be controlled by the first control cabinet 135 when the control module 200 fails.
The hydrogen fuel cell unit 140 further comprises a second control cabinet 145, the second control cabinet 145 is connected with the control end of the third switch 143, and the second control cabinet 145 is further connected with the control end of the fourth switch 144; when the control module 200 fails, the third switch 143 and the fourth switch 144 may be controlled by the second control cabinet 145.
The power lithium battery unit 150 further comprises a third control cabinet 155, the third control cabinet 155 is connected with a control end of the fifth switch 153, and the third control cabinet 155 is further connected with a control end of the sixth switch 154; when the control module 200 fails, the fifth switch 153 and the sixth switch 154 may be controlled by the third control cabinet 155.
The methanol power generation unit 160 further comprises a fourth control cabinet 164, the fourth control cabinet 164 is connected with the control end of the seventh switch 162, and the fourth control cabinet 164 is further connected with the control end of the eighth switch 163; the seventh switch 162 and the eighth switch 163 may be controlled by the fourth control cabinet 164 when the control module 200 fails.
The above detailed description does not limit the scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A power supply system, comprising: the device comprises a power supply module and a control module; the power supply module comprises at least two power supply units; the power generation modes of different power supply units are different;
the first output end of the power supply module is connected with a load, the control module is connected with the power supply module, and the control module is configured to collect the electrical parameters of the power supply units, and control any one of the power supply units to supply power to the load when determining that the power of one of the power supply units meets the target power of the load; when the power of one power supply unit is determined to be smaller than the target power, controlling at least two power supply units to be connected in parallel and then supplying power to the load; wherein the electrical parameters include voltage, current, and power.
2. The power supply system of claim 1, further comprising an energy storage module;
the second output end of the power supply module is connected with the input end of the energy storage module, and the control module is configured to control the power supply module to supply power to the energy storage module when the electric quantity of the power supply module is larger than the target electric quantity of the load;
the output end of the energy storage module is connected with the load, the control module is connected with the energy storage module, and the control module is configured to control the energy storage module to supply power to the load when the power of the power supply module is smaller than the target power.
3. The power supply system of claim 2, wherein at least two of said power supply units comprise a photovoltaic power supply unit, a hydrogen fuel cell unit, a power lithium battery unit, and a methanol power generation unit; the photovoltaic power supply unit comprises a photovoltaic cell panel, a first voltage converter, a first switch and a second switch;
the output end of the photovoltaic cell panel is electrically connected with the input end of the first voltage converter, the photovoltaic cell panel is used for outputting a first direct current voltage, and the first voltage converter is used for converting the first direct current voltage into a second direct current voltage;
the first output end of the first voltage converter is electrically connected with the first end of the first switch, the second end of the first switch is electrically connected with the load, the control end of the first switch is electrically connected with the control module, and the control module is configured to control the first switch to be switched on or switched off according to the target power of the load;
the second output end of the first voltage converter is electrically connected with the first end of the second switch, the second end of the second switch is electrically connected with the input end of the energy storage module, the control end of the second switch is electrically connected with the control module, and the control module is configured to control the second switch to be closed when the electric quantity of the photovoltaic power supply unit is larger than the target electric quantity of the load, so as to control the photovoltaic power supply unit to supply power to the energy storage module.
4. The power supply system according to claim 3, wherein the hydrogen fuel cell unit includes a hydrogen fuel cell stack, a second voltage converter, a third switch, and a fourth switch;
the output end of the hydrogen fuel cell stack is electrically connected with the input end of the second voltage converter, the hydrogen fuel cell stack is used for outputting a third direct current voltage, and the second voltage converter is used for converting the third direct current voltage into a fourth direct current voltage;
the first output end of the second voltage converter is electrically connected with the first end of the third switch, the second end of the third switch is electrically connected with the load, the control end of the third switch is electrically connected with the control module, and the control module is configured to control the third switch to be switched on or switched off according to the target power of the load;
the second output end of the second voltage converter is electrically connected with the first end of the fourth switch, the second end of the fourth switch is electrically connected with the input end of the energy storage module, the control end of the fourth switch is electrically connected with the control module, and the control module is configured to control the fourth switch to be switched on and switched off when the electric quantity of the hydrogen fuel cell unit is greater than the target electric quantity of the load, so as to control the hydrogen fuel cell unit to supply power to the energy storage module.
5. The power supply system of claim 3, wherein the power lithium battery unit comprises a power lithium battery pack, a third voltage converter, a fifth switch, and a sixth switch;
the output end of the power lithium battery pack is electrically connected with the input end of the third voltage converter, the power lithium battery pack is used for outputting fifth direct-current voltage, and the third voltage converter is used for converting the fifth direct-current voltage into sixth direct-current voltage;
a first output end of the third voltage converter is electrically connected with a first end of the fifth switch, a second end of the fifth switch is electrically connected with the load, a control end of the fifth switch is electrically connected with the control module, and the control module is configured to control the fifth switch to be switched on or switched off according to target power of the load;
the second output end of the third voltage converter is electrically connected with the first end of the sixth switch, the second end of the sixth switch is electrically connected with the input end of the energy storage module, the control end of the sixth switch is electrically connected with the control module, and the control module is configured to control the sixth switch to be closed when the electric quantity of the power lithium battery unit is greater than the target electric quantity of the load, so as to control the power lithium battery unit to supply power to the energy storage module.
6. The power supply system of claim 3, wherein the methanol power generation unit comprises a methanol generator set, a seventh switch, and an eighth switch;
a first output end of the methanol generator set is electrically connected with a first end of a seventh switch, a second end of the seventh switch is electrically connected with the load, a control end of the seventh switch is electrically connected with the control module, and the control module is configured to control the seventh switch to be turned on or turned off according to target power of the load;
the second output end of the methanol generator set is electrically connected with the first end of the eighth switch, the second end of the eighth switch is electrically connected with the input end of the energy storage module, the control end of the eighth switch is electrically connected with the control module, the control module is configured to control the eighth switch to be switched on and switched off when the electric quantity of the methanol generator unit is greater than the target electric quantity of the load, so as to control the methanol generator unit to supply power to the energy storage module.
7. The power supply system of claim 2, wherein the energy storage module comprises an energy storage battery, a bidirectional voltage converter, and a ninth switch;
the energy storage battery is electrically connected with a first end of the bidirectional voltage converter, and the bidirectional voltage converter is configured to convert a seventh direct-current voltage output by the energy storage battery into an eighth direct-current voltage;
the second end of the bidirectional voltage converter is connected with the power supply module, and the bidirectional voltage converter is used for outputting a voltage signal output by the power supply module to the energy storage battery;
the second end of the bidirectional voltage converter is electrically connected with the first end of the ninth switch, the second end of the ninth switch is electrically connected with the load, the control end of the ninth switch is electrically connected with the control module, and the control module is configured to control the ninth switch to be closed when the power of the power supply module is smaller than the target power.
8. The power supply system of claim 3, further comprising a power distribution module;
the input end of the power distribution module is electrically connected with the first output end of the power supply module, the output end of the power distribution module is electrically connected with the load, and the power distribution module is configured to output the voltage signal output by the power supply module to the load.
9. The power supply system of claim 8, wherein the power distribution module comprises an inverter;
a first output end of the photovoltaic power supply unit is connected with a first input end of the inverter, and a first output end of the inverter is connected with the load;
the first output end of the hydrogen fuel cell unit is connected with the second input end of the inverter, and the second output end of the inverter is connected with the load;
the first output end of the power lithium battery unit is connected with the third input end of the inverter, and the third output end of the inverter is connected with the load;
the output end of the energy storage module is connected with the fourth input end of the inverter, and the fourth output end of the inverter is connected with the load.
10. The power supply system of claim 1, further comprising an alarm module;
the alarm module is connected with the control module, and the control module is configured to control the alarm module to send out an alarm signal when the electrical parameter is greater than a preset parameter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221436299.1U CN217545593U (en) | 2022-06-08 | 2022-06-08 | Power supply system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221436299.1U CN217545593U (en) | 2022-06-08 | 2022-06-08 | Power supply system |
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| CN217545593U true CN217545593U (en) | 2022-10-04 |
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