CN218449594U - Emergency power supply device and energy storage system - Google Patents
Emergency power supply device and energy storage system Download PDFInfo
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- CN218449594U CN218449594U CN202222134765.7U CN202222134765U CN218449594U CN 218449594 U CN218449594 U CN 218449594U CN 202222134765 U CN202222134765 U CN 202222134765U CN 218449594 U CN218449594 U CN 218449594U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
Abstract
The utility model discloses an emergency power supply device and energy storage system, this emergency power supply device includes: an alternating current input interface; a battery input interface; an output interface; an emergency battery; the input end of the alternating current input conversion circuit is connected with the alternating current input interface, and the alternating current input conversion circuit is used for converting the voltage of an accessed alternating current input power supply and outputting the converted alternating current input power supply; the first input end of the output conversion circuit is respectively connected with the output end of the input conversion circuit and the emergency battery, the second input end of the output conversion circuit is connected with the battery input interface, and the output end of the output conversion circuit is connected with the output interface; the output conversion circuit is used for converting the voltage output by any one of the input conversion circuit, the emergency battery and the energy storage battery and outputting the voltage to the electric load so as to supply power to the electric load. The utility model discloses can solve the problem that current power supply unit can't provide the emergent power supply of longer time.
Description
Technical Field
The utility model relates to an emergency power supply technical field, in particular to emergency power supply device and energy storage system.
Background
With the development of technology, the demand of various devices for power utilization is higher and higher, and especially core devices requiring long-term operation, such as battery containers in energy storage systems, which have strict requirements on safety, especially fire protection systems, need to maintain uninterrupted operation so as to avoid accidents. The conventional power supply device is usually supplied with power by a power grid alone, or is additionally provided with a standby charging and discharging battery which supplies power when the power grid is abnormally powered off, however, the standby charging and discharging battery is usually low in capacity and cannot provide emergency power supply for a long time.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an emergent power supply unit, aim at solving the problem that current power supply unit can't provide the emergent power supply of longer time.
In order to achieve the above object, the utility model provides an emergency power supply device, include:
the alternating current input interface is used for accessing an alternating current input power supply;
the battery input interface is used for accessing an energy storage battery;
the output interface is used for accessing an electric load;
an emergency battery;
the input end of the alternating current input conversion circuit is connected with the alternating current input interface, and the alternating current input conversion circuit is used for converting the voltage of the accessed alternating current input power supply and outputting the converted voltage;
a first input end of the output conversion circuit is respectively connected with an output end of the input conversion circuit and the emergency battery, a second input end of the output conversion circuit is connected with the battery input interface, and an output end of the output conversion circuit is connected with the output interface;
and the output conversion circuit is used for converting the voltage output by any one of the input conversion circuit, the emergency battery and the energy storage battery and then outputting the voltage to an electric load so as to supply power to the electric load.
Optionally, an output end of the ac input conversion circuit is connected to the emergency battery, and the ac input conversion circuit is further configured to convert a voltage of the ac input power source and output the converted ac input power source to the emergency battery, so as to charge the emergency battery.
Optionally, the emergency power supply device further comprises:
the input end of the photovoltaic input conversion circuit is used for being connected with a photovoltaic assembly, the output end of the photovoltaic input conversion circuit is connected with the emergency battery, and the photovoltaic input conversion circuit is used for outputting the voltage output by the photovoltaic assembly to the emergency battery after voltage conversion so as to charge the emergency battery.
Optionally, the emergency power supply device further comprises:
the input end of the voltage-reducing conversion circuit is respectively connected with the output end of the photovoltaic input conversion circuit and the output end of the alternating current input conversion circuit, the output end of the voltage-reducing conversion circuit is connected with the emergency battery, and the voltage-reducing conversion circuit is used for outputting the voltage output by the photovoltaic input conversion circuit and the alternating current input conversion circuit after voltage-reducing conversion.
Optionally, the output conversion circuit includes:
the input end of the first direct current conversion circuit is respectively connected with the output end of the alternating current input conversion circuit and the emergency battery, the output end of the first direct current conversion circuit is connected with the output interface, and the first direct current conversion circuit is used for converting the voltage output by the alternating current input conversion circuit or the emergency battery into direct current power supply voltage and outputting the direct current power supply voltage to supply power for an electric load;
the input end of the second direct-current conversion circuit is connected with the battery input interface, the output end of the second direct-current conversion circuit is connected with the output interface, and the second direct-current conversion circuit is used for converting the voltage output by the energy storage battery into direct-current power supply voltage and then outputting the direct-current power supply voltage to supply power for a power load.
Optionally, the output conversion circuit further comprises:
and the input end of the alternating current conversion circuit is respectively connected with the output end of the first direct current conversion circuit and the output end of the second direct current conversion circuit, the output end of the alternating current conversion circuit is connected with the output interface, and the alternating current conversion circuit is used for converting the direct current power supply voltage output by the first direct current conversion circuit or the second direct current conversion circuit into alternating current power supply voltage and outputting the alternating current power supply voltage to supply power for a power load.
Optionally, the output converting circuit further comprises:
the input end of the alternating current conversion circuit is respectively connected with the output end of the alternating current input conversion circuit and the emergency battery, the output end of the alternating current conversion circuit is connected with the output interface, and the alternating current conversion circuit is used for converting the voltage output by the alternating current input conversion circuit or the emergency battery into alternating current power supply voltage and then outputting the alternating current power supply voltage to supply power for an electric load.
Optionally, the emergency power supply device further comprises:
the battery voltage conversion circuit is arranged between the output end of the input conversion circuit and the emergency battery in series, and is used for converting the voltage output by the input conversion circuit and outputting the voltage to the emergency battery so as to charge the emergency battery, and converting the voltage output by the emergency battery and outputting the voltage to the output conversion circuit.
Optionally, the emergency power supply device further includes:
the first detection end of the electric control component is connected with the alternating current input interface, the first control end of the electric control component is connected with the controlled end of the alternating current input conversion circuit, the second control end of the electric control component is connected with the controlled end of the output conversion circuit, and the electric control component is used for detecting the voltage of the alternating current input interface and controlling the output conversion circuit to convert the voltage output by the emergency battery and output the converted voltage when the power failure of the alternating current input interface is detected;
and/or controlling the output conversion circuit to convert the voltage output by the energy storage battery and then output the converted voltage.
Optionally, the emergency power supply device further includes:
the first detection end of the electric control component is connected with the alternating current input interface, the second detection end of the electric control component is connected with the energy storage battery, the first control end of the electric control component is connected with the controlled end of the alternating current input conversion circuit, the second control end of the electric control component is connected with the controlled end of the output conversion circuit, the electric control component is used for detecting the voltage of the alternating current input interface, and when the power failure of the alternating current input interface is detected, the output conversion circuit is controlled to convert the voltage output by the energy storage battery and output the converted voltage; and the number of the first and second groups,
the electric control assembly is further used for detecting the battery electric quantity of the energy storage battery, and controlling the output conversion circuit to carry out voltage conversion on the voltage output by the emergency battery and then output the voltage when the battery electric quantity of the energy storage battery is lower than a preset electric quantity value.
The utility model discloses still provide an energy storage system, include:
the input end of the transformer is used for being connected to a power grid;
the input end of the energy storage converter is used for being connected into a power grid;
the input end of the energy storage voltage conversion circuit is connected with the output end of the energy storage converter;
the energy storage battery is connected with the output end of the energy storage voltage conversion circuit; and the number of the first and second groups,
in the emergency power supply device, the alternating current input interface of the emergency power supply device is connected with the output end of the transformer, the battery input interface of the emergency power supply device is connected with the energy storage battery, and the load interface of the emergency power supply device is used for accessing an electric load.
The utility model discloses technical scheme is through setting up AC input interface, the battery input interface, emergent battery, AC input converting circuit and output converting circuit, the many power supplies power supply of emergent power supply unit has been realized, make emergent power supply unit can appear when unusual unable power supply in certain power, switch to other powers and supply power to the power consumption load, reach the effect of uninterrupted power supply, can prevent effectively that the power consumption load from causing the damage because of the outage suddenly, the problem of the emergent power supply of current power supply unit can't provide the longer time has been solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of functional modules of an embodiment of the emergency power supply device of the present invention;
fig. 2 is a schematic diagram of functional modules of another embodiment of the emergency power supply device of the present invention;
fig. 3 is a schematic functional module diagram of another embodiment of the emergency power supply device of the present invention;
fig. 4 is a schematic diagram of a functional module of another embodiment of the emergency power supply device of the present invention;
fig. 5 is a schematic diagram of functional modules according to an embodiment of the present invention.
The reference numbers indicate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | AC |
50 | Battery |
| 20 | |
21 | First |
| 30 | Photovoltaic |
22 | Second |
| 40 | Step-down |
23 | AC conversion circuit |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely 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 belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear \8230;) are involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship between the components in a specific posture (as shown in the attached drawings), the motion situation, etc., and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides an emergency power supply device.
At present, the conventional power supply device is usually supplied with power by a power grid alone, or is additionally provided with a standby charging and discharging battery which supplies power when the power grid is abnormally powered off, however, the standby charging and discharging battery is usually low in capacity and cannot provide emergency power supply for a long time.
To solve the above problem, referring to fig. 1 to 4, in an embodiment, the emergency power supply device includes:
the alternating current input interface is used for accessing an alternating current input power supply;
the battery input interface is used for accessing an energy storage battery;
the output interface is used for accessing an electric load;
an emergency battery;
the input end of the alternating current input conversion circuit 10 is connected with the alternating current input interface, and the alternating current input conversion circuit 10 is used for converting the voltage of the accessed alternating current input power supply and outputting the converted alternating current input power supply;
an output conversion circuit 20, a first input end of the output conversion circuit 20 is connected to the output end of the input conversion circuit and the emergency battery, a second input end of the output conversion circuit 20 is connected to the battery input interface, and an output end of the output conversion circuit 20 is connected to the output interface;
the output conversion circuit 20 is configured to perform voltage conversion on the voltage output by any one of the input conversion circuit, the emergency battery, and the energy storage battery, and output the voltage to an electric load to supply power to the electric load.
In this embodiment, the AC-DC conversion circuit may be used to implement the AC-DC conversion circuit 10 to convert the AC input power received by the AC input interface into the DC power, and the output conversion circuit 20 may be implemented by using the DC-DC conversion circuit or the DC-AC conversion circuit according to the power supply type of the electrical load, so as to convert the voltage output by any one of the input conversion circuit, the emergency battery and the energy storage battery into the corresponding type of power supply to output to the electrical load, so as to supply power to the electrical load.
The alternating current input interface can be connected with alternating current output by a power grid system and can also be connected with other alternating current equipment, the battery input interface can be connected with an energy storage battery used for storing energy in the energy storage system, and also can be connected with other energy storage devices or equipment according to practical application scenes. Simultaneously, still be equipped with emergency battery among the emergency power supply device, so set up, work as the utility model discloses an emergency power supply device can be under energy storage system's safety not being influenced when being applied to energy storage system, make full use of energy storage system's energy storage battery and electric wire netting output for emergency power supply device has the power of three power supply, has two stand-by power supplies and supplies power for the power consumption load. Correspondingly, the output conversion circuit 20 may select a plurality of voltage conversion circuits or set a plurality of voltage conversion branches, and may further set a switch circuit to switch among a plurality of input power supplies, so that the voltage output by any one of the input conversion circuit, the emergency battery and the energy storage battery can be converted into a supply voltage to supply power to the electrical load.
Furthermore, a switch circuit or a controller can be arranged in the emergency power supply device to control the switching between a plurality of power supplies, so that the power supply of multiple power supplies is realized, the effect of uninterrupted power supply is achieved, the emergency power supply device can supply power to the power load by using other power supplies when a certain power supply is abnormal and cannot supply power, and the power supply of double standby power supplies is realized. In addition, the power supply priorities of a plurality of power supplies can be set according to application requirements, so that reasonable seamless power supply switching is realized, for example, the power supply priorities are sequentially set to be a power grid, an energy storage battery and an emergency battery, and when the power supply is input into the ac input interface, the output conversion circuit 20 is controlled to convert the voltage output by the input conversion circuit into the power supply voltage and supply power to the power load. When the ac input interface is powered off, the power supply is switched to the energy storage battery, that is, the output conversion circuit 20 is controlled to convert the voltage output by the energy storage battery into the power supply voltage and then supply power to the power load. When the electric quantity of the energy storage battery is insufficient, the emergency battery is switched to supply power, namely the output conversion circuit 20 is controlled to convert the voltage output by the emergency battery into the supply voltage and then supply power to the power load. So set up, realized the seamless switching between a plurality of powers of emergency power supply unit for emergency power supply unit can reach uninterrupted power supply's effect, can effectively prevent to cause the damage because of outage suddenly with the electric load.
The utility model discloses a set up AC input interface, battery input interface, emergency battery, realized emergency power supply unit's many power supplies power for emergency power supply unit can appear when unusual unable supplying power in certain power, switches to other power and supplies power to the power consumption load, reaches the effect of uninterrupted power supply, can prevent effectively that the power consumption load from causing the damage because of cutting off the power supply suddenly. And simultaneously, the utility model discloses an emergency power supply unit can be applied to different scenes, only need with the power supply who corresponds with the interface connection that emergency power supply unit corresponds can, improved emergency power supply unit's practicality and suitability.
Referring to fig. 1 to 4, in an embodiment, an output end of the ac input conversion circuit 10 is connected to the emergency battery, and the ac input conversion circuit 10 is further configured to perform voltage conversion on the accessed ac input power and output the converted ac input power to the emergency battery, so as to charge the emergency battery.
In this embodiment, the output terminal of the ac input conversion circuit 10 is further connected to an emergency battery, so that when an ac input power is connected to the ac input interface, the ac input power can supply power to the electric load through the ac input conversion circuit 10 and the output conversion circuit 20, and the emergency battery can be charged through the ac input conversion circuit 10. So set up for AC input power supply charges to emergency battery when for the power consumption load power supply, makes emergency battery have sufficient electric quantity when AC input interface falls the electricity, switches over to supply power for the power consumption load for emergency battery, realizes reserve power supply, avoids when AC input interface falls the electricity, and the power consumption load that leads to of emergency battery not having sufficient electric quantity damages for the power consumption load power supply.
Referring to fig. 1 to 4, in an embodiment, the emergency power supply device further includes:
the photovoltaic input conversion circuit 30, the input of the photovoltaic input conversion circuit 30 is used for accessing the photovoltaic module, the output of the photovoltaic input conversion circuit 30 is connected with the emergency battery, and the photovoltaic input conversion circuit 30 is used for outputting the voltage output by the photovoltaic module to the emergency battery after voltage conversion so as to charge the emergency battery.
In an embodiment, the photovoltaic input conversion circuit 30 may be implemented by a DC-DC voltage conversion circuit, and the input end of the photovoltaic input conversion circuit 30 may be connected to a photovoltaic module in the energy storage system, or may be connected to a photovoltaic device such as a solar panel according to an actual application scenario. Through setting up photovoltaic input converting circuit 30 for photovoltaic module can charge to emergency battery through photovoltaic input converting circuit 30, makes emergency battery have sufficient electric quantity when the AC input interface falls the electricity, switches to supplying power for the power consumption load for emergency battery, realizes reserve power supply, avoids when the AC input interface falls the electricity, and the power consumption load that leads to of emergency battery not having sufficient electric quantity is damaged for the power consumption load power supply. In addition, the output end of the photovoltaic input conversion circuit 30 can be connected with the input end of the output conversion circuit 20, so that the output conversion circuit 20 can also supply power for the power load by using a photovoltaic module, the power input source of the emergency power supply device is increased, and the practicability and the applicability of the emergency power supply device are improved.
Optionally, the emergency power supply device further comprises:
the input end of the step-down conversion circuit 40 is respectively connected with the output end of the photovoltaic input conversion circuit 30 and the output end of the alternating current input conversion circuit 10, the output end of the step-down conversion circuit 40 is connected with the emergency battery, and the step-down conversion circuit 40 is used for performing step-down conversion on the voltages output by the photovoltaic input conversion circuit 30 and the alternating current input conversion circuit 10 and then outputting the converted voltages.
It can be understood that when the emergency battery is selected from different batteries, the required charging voltage is not the same, and for some batteries with lower required charging voltage, even though the voltage is converted by the pv input converter circuit 30 and the ac input converter circuit 10, the output voltage is higher than the required charging voltage of the battery. Therefore, in an embodiment, the voltage-reducing conversion circuit 40 is further provided, the voltage-reducing conversion circuit 40 can be implemented by a DC-DC conversion circuit such as a Buck circuit, and the voltage-reducing conversion circuit 40 can reduce the voltages output by the photovoltaic input conversion circuit 30 and the ac input conversion circuit 10 and output the reduced voltages to the emergency battery, so as to adapt to the charging voltage of the emergency battery, and thus the emergency battery can be charged safely and stably.
Referring to fig. 1 to 4, in an embodiment, the output conversion circuit 20 includes:
the input end of the first direct current conversion circuit 21 is connected with the output end of the alternating current input conversion circuit 10 and the emergency battery respectively, the output end of the first direct current conversion circuit 21 is connected with the output interface, and the first direct current conversion circuit 21 is used for converting the voltage output by the alternating current input conversion circuit 10 or the emergency battery into a direct current power supply voltage and outputting the direct current power supply voltage to supply power to a power load;
the input end of the second dc conversion circuit 22 is connected to the battery input interface, the output end of the second dc conversion circuit 22 is connected to the output interface, and the second dc conversion circuit 22 is configured to convert the voltage output by the energy storage battery into a dc power supply voltage and output the dc power supply voltage, so as to supply power to a power load.
In this embodiment, the output interface may be used to connect to a DC power load, and both the first DC conversion circuit 21 and the second DC conversion circuit 22 may be implemented by a DC-DC voltage conversion circuit. The first dc conversion circuit 21 is connected to the ac input conversion circuit 10 and the emergency battery, and the first dc conversion circuit 21 is configured to convert a voltage output by the ac input conversion circuit 10 into a dc supply voltage and then supply power to a dc power load connected to the input interface, and is configured to convert a voltage output by the emergency battery into a dc supply voltage and then supply power to a dc power load connected to the input interface when the ac input interface is powered down. In this way, the first dc conversion circuit 21 is provided to switch the power supply between the ac input interface and the emergency battery. The second dc conversion circuit 22 is configured to convert the voltage output by the energy storage battery into a dc power supply voltage and output the dc power supply voltage, and may control the first dc conversion circuit 21 to stop working and control the second dc conversion circuit 22 to work, so as to switch the power supply to the energy storage battery for working. It is understood that the priority of operation of the plurality of power supplies can be set by setting the operation condition of the first dc conversion circuit 21 or the second dc conversion circuit 22 in different cases. For example, when the ac input interface has power output, the first dc converter circuit 21 is controlled to operate, and the second dc converter circuit 22 is controlled to stop operating, so that the ac input power is supplied to the electrical load. When the alternating current input interface is powered off, the first direct current conversion circuit 21 is controlled to stop working, and the second direct current conversion circuit 22 is controlled to start working, so that the accessed energy storage battery supplies power for the power load. And when the alternating current input interface is powered off and the electric quantity of the energy storage battery is insufficient, the first direct current conversion circuit 21 is controlled to work, and the second direct current conversion circuit 22 is controlled to stop working, so that the emergency power supply supplies power to the electric load. So, preferentially be the power supply for power load for alternating current input power supply, and when alternating current input power supply was unusual, then can be supplied power by energy storage battery or emergency battery for emergency power supply device has two stand-by power supplies, has realized the seamless switching between a plurality of powers of emergency power supply device, thereby makes emergency power supply device can reach uninterrupted power supply's effect, can effectively prevent to cause the damage because of the outage suddenly with the power load.
Referring to fig. 1 to 4, in an embodiment, the output conversion circuit 20 further includes:
an input end of the ac conversion circuit 23 is connected to an output end of the first dc conversion circuit 21 and an output end of the second dc conversion circuit 22, respectively, an output end of the ac conversion circuit 23 is connected to the output interface, and the ac conversion circuit 23 is configured to convert the dc power supply voltage output by the first dc conversion circuit 21 or the second dc conversion circuit 22 into an ac power supply voltage and output the ac power supply voltage to supply power to the power load.
It is understood that the output interface may also be used to connect to the ac electrical load, or the number of the output interfaces may be two, one is used to connect to the ac electrical load, and the other is used to connect to the dc electrical load. In an embodiment, the AC converting circuit 23 may be implemented by a DC-AC voltage converting circuit, and an input terminal of the AC converting circuit 23 is respectively connected to an output terminal of the first DC converting circuit 21 and an output terminal of the second DC converting circuit 22, so as to convert the DC supply voltage into an AC supply voltage and supply power to the AC load. The utility model discloses a set up direct current converting circuit and alternating current converting circuit 23 for emergency power supply device can be for the power supply of direct current power consumption load, also can be for the power supply of alternating current power consumption load, has increased emergency power supply device's applied scene, has improved emergency power supply device's practicality and variety.
Optionally, the output conversion circuit 20 further includes:
the input end of the alternating current conversion circuit 23 is respectively connected with the output end of the alternating current input conversion circuit 10 and the emergency battery, the output end of the alternating current conversion circuit 23 is connected with the output interface, and the alternating current conversion circuit 23 is used for converting the voltage output by the alternating current input conversion circuit 10 or the emergency battery into an alternating current power supply voltage and outputting the alternating current power supply voltage to supply power to an electric load.
In another embodiment, the input end of the ac converting circuit 23 is connected to the output end of the ac input converting circuit 10 and the emergency battery, respectively, so as to convert the voltage output by the ac input converting circuit 10 or the emergency battery into an ac power supply voltage and supply power to the ac power load. With this arrangement, the ac conversion circuit 23 can directly convert the voltage output from the input conversion circuit or the emergency battery, and thus the power loss through the first dc conversion circuit 21 can be reduced, thereby improving the energy utilization. In addition, it can be understood that a bidirectional DC-DC voltage conversion circuit may also be used as the first DC conversion circuit 21, so that the energy storage battery can output electric energy to the ac conversion circuit 23 through the second DC conversion circuit 22 and the first DC conversion circuit 21, and thus the energy storage battery can also supply power to the ac load. The utility model discloses a set up DC conversion circuit and AC conversion circuit 23 for emergency power supply unit can be for the power supply of direct current power consumption load, also can be for the power supply of alternating current power consumption load, has increased emergency power supply unit's applied scene, has improved emergency power supply unit's practicality and variety.
Referring to fig. 1 to 4, in an embodiment, the emergency power supply device further includes:
the battery voltage conversion circuit 50 is arranged between the output end of the input conversion circuit and the emergency battery in series, and the battery voltage conversion circuit 50 is used for converting the voltage output by the input conversion circuit and outputting the voltage to the emergency battery to charge the emergency battery, and is used for converting the voltage output by the emergency battery and outputting the voltage to the output conversion circuit 20.
It is understood that when the emergency battery is different from the selected battery, the charging voltage and the output voltage are different. Therefore, in an embodiment, a battery voltage conversion circuit 50 is further provided, the battery voltage conversion circuit 50 may be implemented by a bidirectional DC-DC voltage conversion circuit, and the battery voltage conversion circuit 50 can convert the voltages output by the photovoltaic input conversion circuit 30 and the ac input conversion circuit 10 into charging voltages and output the charging voltages to emergency batteries to adapt to the corresponding emergency batteries, so that the emergency batteries can be charged safely and stably. The battery voltage conversion circuit 50 is also capable of converting the voltage output by the emergency battery into an input voltage required by the output conversion circuit 20 so that the emergency battery can supply power to the electrical load. Further, battery voltage converting circuit 50 can also be based on the control of controller, and the controller can be through the drive signal of output different duty cycles to adjust battery voltage converting circuit 50's voltage conversion range, thereby make battery voltage converting circuit 50 can be with the required voltage of voltage conversion, so, can be according to the application demand of reality, change the emergent battery of different grade type, improved emergent power supply unit's variety and practicality.
Referring to fig. 1 to 4, in an embodiment, the emergency power supply device further includes:
the first detection end of the electronic control component is connected with the alternating current input interface, the first control end of the electronic control component is connected with the controlled end of the alternating current input conversion circuit 10, the second control end of the electronic control component is connected with the controlled end of the output conversion circuit 20, and the electronic control component is used for detecting the voltage of the alternating current input interface and controlling the output conversion circuit 20 to convert the voltage output by the emergency battery and output the converted voltage when the alternating current input interface is detected to be powered off;
and/or, controlling the output conversion circuit 20 to convert the voltage output by the energy storage battery and then output the converted voltage.
In this embodiment, the emergency power supply device is further provided with an electric control assembly for controlling power supply output of the emergency power supply device and power supply switching among the plurality of power supply sources. The electric control assembly can be realized by selecting a voltage detection circuit and a controller, the voltage detection circuit can be realized by selecting a divider resistor to detect the power-on state of the alternating current input interface, the controller can be realized by selecting microprocessors such as an FPGA (field programmable gate array), a singlechip, a CPLD (complex programmable logic device) and the like, and the controller controls the emergency power supply device to be switched to a corresponding power supply according to the detected power-on state of the alternating current input interface. Specifically, when the ac input interface is powered on, the controller controls the ac input conversion circuit 10 to start operating, and controls the output conversion circuit 20 to convert the voltage output by the ac input conversion circuit 10 and output the converted voltage, so that the ac input power supply is used as the power load. When the power failure of the alternating current input interface is detected, the controller controls the output conversion circuit 20 to be switched to an emergency battery or an energy storage battery for supplying power, so that the working state of the electric load can be kept, and the electric load is prevented from being damaged due to sudden power failure. In addition, when the power load is a high-power load, the controller may further control the output conversion circuit 20 to switch to the emergency battery and the energy storage battery to simultaneously supply power to the power load, so as to meet the high-power requirement of the power load. The utility model discloses a set up automatically controlled subassembly for automatically controlled subassembly can control and carry out seamless switching between a plurality of powers according to the last electric state of AC input interface, thereby makes emergency power supply device can reach uninterrupted power supply's effect, can effectively prevent to cause the damage because of the outage suddenly with the electric load, has improved emergency power supply device's intelligent degree and practicality.
Optionally, the emergency power supply device further comprises:
the first detection end of the electric control assembly is connected with the alternating current input interface, the second detection end of the electric control assembly is connected with the energy storage battery, the first control end of the electric control assembly is connected with the controlled end of the alternating current input conversion circuit 10, the second control end of the electric control assembly is connected with the controlled end of the output conversion circuit 20, the electric control assembly is used for detecting the voltage of the alternating current input interface, and when the alternating current input interface is detected to be powered off, the output conversion circuit 20 is controlled to convert the voltage output by the energy storage battery and output the converted voltage; and (c) a second step of,
the electric control assembly is further used for detecting the battery electric quantity of the energy storage battery, and controlling the output conversion circuit 20 to convert the voltage output by the emergency battery and then output the voltage when the battery electric quantity of the energy storage battery is lower than a first electric quantity value.
Furthermore, power supply priorities among a plurality of power supplies can be set through the electric control assembly, in another embodiment, the electric control assembly is also used for detecting the battery electric quantity of the energy storage battery, the electric control assembly can select the voltage detection circuit to detect the voltage of the energy storage battery, and the electric quantity of the energy storage battery is judged according to the voltage of the energy storage battery. Therefore, the electric control assembly can select a proper power supply to supply power to the electric load according to the power-on state of the alternating current input interface and the electric quantity of the energy storage battery so as to keep the stable working state of the electric load. The power supply priority of the three power supplies can be set to be an alternating current input power supply, an energy storage battery and an emergency battery in sequence through the electric control assembly. Specifically, when the ac input interface is powered on, the controller controls the ac input conversion circuit 10 to start operating, and controls the output conversion circuit 20 to perform voltage conversion on the voltage output by the ac input conversion circuit 10 and then output the voltage, so that the accessed ac input power supplies power to the electrical load. When the AC input interface is detected to be powered down, the AC input interface is preferentially switched to the energy storage battery for power supply, and at the moment, the electric control assembly judges whether the energy storage battery supplies power or not according to the battery electric quantity obtained by detection. When the battery capacity of the energy storage battery is greater than the preset capacity value, the electric control assembly controls the output conversion circuit 20 to convert the voltage output by the energy storage battery and output the converted voltage to the power utilization load, and the power is supplied by the energy storage battery. When the battery capacity of the energy storage battery is smaller than the preset capacity value, the electric control assembly controls the output conversion circuit 20 to convert the voltage output by the emergency battery and output the voltage to the power utilization load, and the emergency battery supplies power. In addition, automatically controlled subassembly can also detect the battery power of emergency battery, and when the AC input interface falls the electricity, and the equal electric quantity of energy storage battery and emergency battery is not enough, then the emergent power supply unit of direct control stops the power supply, saves the process of being switched into emergency battery by energy storage battery. The utility model discloses a set up automatically controlled subassembly for automatically controlled subassembly can control and carry out seamless switching between a plurality of powers according to the last electric state of AC input interface and energy storage battery's electric quantity, thereby makes emergency power supply device can reach uninterrupted power supply's effect, can effectively prevent to cause the damage because of the outage suddenly with the electric load, has improved emergency power supply device's intelligent degree and practicality. And simultaneously, the utility model discloses can also rationally set up the power supply priority of a plurality of power, improve the utilization ratio of electric energy.
Referring to fig. 5, the utility model also provides an energy storage system, this energy storage system includes:
the input end of the transformer is used for being connected to a power grid;
the input end of the energy storage converter is used for being connected into a power grid;
the input end of the energy storage voltage conversion circuit is connected with the output end of the energy storage converter;
the energy storage battery is connected with the output end of the energy storage voltage conversion circuit; and the number of the first and second groups,
according to the emergency power supply device, the alternating current input interface of the emergency power supply device is connected with the output end of the transformer, the battery input interface of the emergency power supply device is connected with the energy storage battery, and the load interface of the emergency power supply device is used for being connected with an electric load.
In this embodiment, the emergency power supply device is connected with the transformer and the energy storage battery in the energy storage system respectively, so, the emergency power supply device then has three power supply of electric wire netting, energy storage battery and emergency battery, and when the electric wire netting was normally supplied power, the voltage conversion that the emergency power supply device exported the transformer was the power supply voltage and supplies power for the power consumption load of access. When the power grid is abnormally powered off, the emergency power supply device is switched to the energy storage battery or the emergency battery to supply power for the accessed power load. In the energy storage system, the energy storage battery can also store the electric energy output by the power grid, so that the energy storage battery can have sufficient electric quantity to supply power for the power load when the power grid is abnormally powered off. In addition, the above-mentioned embodiment is referred to for the specific structure of the emergency power supply device, and since the energy storage system adopts all the technical solutions of all the above-mentioned embodiments, at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments are achieved, and are not described in detail herein.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (11)
1. An emergency power supply device, comprising:
the alternating current input interface is used for accessing an alternating current input power supply;
the battery input interface is used for accessing an energy storage battery;
the output interface is used for accessing an electric load;
an emergency battery;
the input end of the alternating current input conversion circuit is connected with the alternating current input interface, and the alternating current input conversion circuit is used for converting the voltage of the accessed alternating current input power supply and outputting the converted voltage;
a first input end of the output conversion circuit is respectively connected with an output end of the input conversion circuit and the emergency battery, a second input end of the output conversion circuit is connected with the battery input interface, and an output end of the output conversion circuit is connected with the output interface;
the output conversion circuit is used for converting the voltage output by any one of the input conversion circuit, the emergency battery and the energy storage battery and outputting the voltage to the electric load so as to supply power to the electric load.
2. The emergency power supply of claim 1 wherein the output of the ac input converter circuit is connected to the emergency battery, and the ac input converter circuit is further configured to convert the voltage of the ac input power and output the converted ac input power to the emergency battery for charging the emergency battery.
3. The emergency power supply apparatus according to claim 1, further comprising:
the photovoltaic input conversion circuit is used for being connected with a photovoltaic assembly, the output end of the photovoltaic input conversion circuit is connected with the emergency battery, and the photovoltaic input conversion circuit is used for outputting the voltage output by the photovoltaic assembly to the emergency battery after voltage conversion so as to charge the emergency battery.
4. An emergency power supply apparatus according to claim 3, further comprising:
the input end of the voltage-reducing conversion circuit is respectively connected with the output end of the photovoltaic input conversion circuit and the output end of the alternating current input conversion circuit, the output end of the voltage-reducing conversion circuit is connected with the emergency battery, and the voltage-reducing conversion circuit is used for outputting the voltage output by the photovoltaic input conversion circuit and the alternating current input conversion circuit after voltage-reducing conversion.
5. An emergency power supply according to claim 1, wherein said output converter circuit comprises:
the input end of the first direct current conversion circuit is respectively connected with the output end of the alternating current input conversion circuit and the emergency battery, the output end of the first direct current conversion circuit is connected with the output interface, and the first direct current conversion circuit is used for converting the voltage output by the alternating current input conversion circuit or the emergency battery into direct current power supply voltage and then outputting the direct current power supply voltage to supply power for a power load;
the input end of the second direct-current conversion circuit is connected with the battery input interface, the output end of the second direct-current conversion circuit is connected with the output interface, and the second direct-current conversion circuit is used for converting the voltage output by the energy storage battery into direct-current power supply voltage and then outputting the direct-current power supply voltage to supply power for a power load.
6. The emergency power supply of claim 5 wherein said output conversion circuit further comprises:
the input end of the alternating current conversion circuit is respectively connected with the output end of the first direct current conversion circuit and the output end of the second direct current conversion circuit, the output end of the alternating current conversion circuit is connected with the output interface, and the alternating current conversion circuit is used for converting the direct current power supply voltage output by the first direct current conversion circuit or the second direct current conversion circuit into alternating current power supply voltage and outputting the alternating current power supply voltage to supply power for a power load.
7. The emergency power supply of claim 5 wherein said output conversion circuit further comprises:
the input end of the alternating current conversion circuit is respectively connected with the output end of the alternating current input conversion circuit and the emergency battery, the output end of the alternating current conversion circuit is connected with the output interface, and the alternating current conversion circuit is used for converting the voltage output by the alternating current input conversion circuit or the emergency battery into alternating current power supply voltage and then outputting the alternating current power supply voltage to supply power for an electric load.
8. The emergency power supply apparatus according to claim 1, further comprising:
the battery voltage conversion circuit is arranged between the output end of the input conversion circuit and the emergency battery in series, and is used for converting the voltage output by the input conversion circuit and outputting the voltage to the emergency battery so as to charge the emergency battery, and converting the voltage output by the emergency battery and outputting the voltage to the output conversion circuit.
9. The emergency power supply apparatus according to claim 1, further comprising:
the first detection end of the electric control assembly is connected with the alternating current input interface, the first control end of the electric control assembly is connected with the controlled end of the alternating current input conversion circuit, the second control end of the electric control assembly is connected with the controlled end of the output conversion circuit, and the electric control assembly is used for detecting the voltage of the alternating current input interface and controlling the output conversion circuit to carry out voltage conversion on the voltage output by the emergency battery and then output the voltage when the alternating current input interface is detected to be powered off;
and/or controlling the output conversion circuit to convert the voltage output by the energy storage battery and then output the converted voltage.
10. The emergency power supply apparatus according to claim 1, further comprising:
the first detection end of the electric control assembly is connected with the alternating current input interface, the second detection end of the electric control assembly is connected with the energy storage battery, the first control end of the electric control assembly is connected with the controlled end of the alternating current input conversion circuit, the second control end of the electric control assembly is connected with the controlled end of the output conversion circuit, the electric control assembly is used for detecting the voltage of the alternating current input interface and controlling the output conversion circuit to convert the voltage output by the energy storage battery and output the converted voltage when the alternating current input interface is detected to be powered down; and (c) a second step of,
the electric control assembly is further used for detecting the battery electric quantity of the energy storage battery, and controlling the output conversion circuit to carry out voltage conversion on the voltage output by the emergency battery and then output the voltage when the battery electric quantity of the energy storage battery is lower than a preset electric quantity value.
11. An energy storage system, comprising:
the input end of the transformer is used for being connected to a power grid;
the input end of the energy storage converter is used for being connected into a power grid;
the input end of the energy storage voltage conversion circuit is connected with the output end of the energy storage converter;
the energy storage battery is connected with the output end of the energy storage voltage conversion circuit; and the number of the first and second groups,
the emergency power supply device according to any one of claims 1 to 10, wherein an ac input interface of the emergency power supply device is connected to an output terminal of the transformer, a battery input interface of the emergency power supply device is connected to the energy storage battery, and a load interface of the emergency power supply device is used for connecting an electric load.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222134765.7U CN218449594U (en) | 2022-08-12 | 2022-08-12 | Emergency power supply device and energy storage system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222134765.7U CN218449594U (en) | 2022-08-12 | 2022-08-12 | Emergency power supply device and energy storage system |
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| CN218449594U true CN218449594U (en) | 2023-02-03 |
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2022
- 2022-08-12 CN CN202222134765.7U patent/CN218449594U/en active Active
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