CN221150963U - Fuel cell cogeneration start-stop device and fuel cell cogeneration system - Google Patents
Fuel cell cogeneration start-stop device and fuel cell cogeneration system Download PDFInfo
- Publication number
- CN221150963U CN221150963U CN202322744184.XU CN202322744184U CN221150963U CN 221150963 U CN221150963 U CN 221150963U CN 202322744184 U CN202322744184 U CN 202322744184U CN 221150963 U CN221150963 U CN 221150963U
- Authority
- CN
- China
- Prior art keywords
- power supply
- fuel cell
- assembly
- output end
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 111
- 230000000712 assembly Effects 0.000 abstract description 2
- 238000000429 assembly Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Fuel Cell (AREA)
Abstract
The application provides a fuel cell cogeneration start-stop device and a fuel cell cogeneration system, wherein the device comprises: the fuel cell system comprises a first power supply assembly, a second power supply assembly, a third power supply assembly, a switch assembly and a control assembly, wherein the first power supply assembly is connected with a power grid, and the second power supply assembly is connected with an output end of the fuel cell system; the input end of the switch assembly is respectively connected with the output ends of the first power supply assembly to the third power supply assembly, the output end of the switch assembly is connected with the load power supply input end and is provided with a plurality of switch states, and each switch state corresponds to the running state of the fuel cell cogeneration system; the control assembly is respectively connected with the power supply assembly and the switch assembly, and controls the switch assembly to be in a corresponding switch state according to the running state of the system so as to supply power to the load through different power supply assemblies. The problems of easy feed damage of the storage battery of the system and unstable low-voltage power supply of the system are solved, the power supply switching is realized, and the risk of power shortage of the storage battery is reduced.
Description
Technical Field
The present application relates to the field of fuel cell cogeneration, and more particularly, to a fuel cell cogeneration start-stop device and a fuel cell cogeneration system in the field of fuel cell cogeneration.
Background
The fuel cell cogeneration system mainly comprises a fuel cell and auxiliary equipment, wherein the low-voltage power supply system is one of key parts in the system, and can meet the requirements of users on electric power through the processes of voltage conversion, control, protection, feedback and the like, and provide stable and clean energy supply.
In the related art, a common low-voltage power supply system is composed of a switching power supply and an electric storage battery, wherein the input of the switching power supply is connected to a power grid, and the low-voltage power supply of the system and the charging of the storage battery are provided by the switching power supply.
However, the storage battery of the low-voltage power supply system is easy to be fed and damaged, and the low-voltage power supply of the system is unstable, especially in the application scene of frequent switching off grid or long-time off grid, so that the problem needs to be solved.
Disclosure of utility model
The application provides a fuel cell cogeneration start-stop device and a fuel cell cogeneration system, which solve the problems of easy feed damage of a system storage battery and unstable low-voltage power supply of the system in the related technology, realize seamless switching of power supply, reduce the risk of power deficiency of the storage battery, prolong the service life of the storage battery and improve the stability of power supply of the cogeneration system.
In a first aspect, there is provided a fuel cell cogeneration start-stop apparatus comprising:
the first power supply assembly is connected with the power grid at the input end, and the second power supply assembly is connected with the output end of the fuel cell system at the input end;
The input end of the switch component is respectively connected with the output end of the first power supply component, the output end of the second power supply component and the output end of the third power supply component, the output end of the switch component is connected with the load power supply input end, and the switch component has a plurality of switch states, and each switch state corresponds to the running state of the fuel cell cogeneration system; and
The control assembly is respectively connected with the first power supply assembly, the second power supply assembly and the switch assembly, and controls the switch assembly to be in a corresponding switch state according to the current running state of the fuel cell cogeneration system so as to supply power to a load through the first power supply assembly and/or the second power supply assembly or supply power to the load through the third power supply assembly.
Through the technical scheme, the on-off state of the switch assembly is intelligently controlled, the first power supply assembly and the second power supply assembly supply power for the load or the third power supply assembly supplies power for the load, the power supply mode is flexibly adjusted according to the needs, and the energy utilization rate is maximized, so that energy and power consumption are saved. The device also adopts a plurality of switch states to correspond to the running states of the fuel cell cogeneration system, can automatically switch according to actual conditions, ensures the normal operation of equipment and the system, and simultaneously, the control component can monitor and manage the power supply in time, thereby improving the stability and the reliability of the whole system.
With reference to the first aspect, in some possible implementations, the first power supply assembly includes:
The input end of the first power supply piece is connected with the power grid, and the negative electrode of the output end of the first power supply piece is connected with the negative electrode output end of the fuel cell cogeneration system;
The first rectifying part, the first input of first rectifying part with the positive pole of the output of first power supply spare links to each other, the second input of first rectifying part with the second power supply subassembly links to each other, the output of first rectifying part with switch assembly links to each other.
Through the technical scheme, the electric energy of the power grid is input into the fuel cell cogeneration system through the first power supply piece, and the electric energy is converted into direct current by utilizing the first rectifying piece, so that the electric energy utilization rate and the working efficiency of the fuel cell cogeneration system are improved; meanwhile, the first rectifying piece is connected with the second power supply assembly, so that complementation and coordination of multiple energy sources are realized, and the energy utilization rate and the working efficiency of the system are further improved. In addition, by controlling the switch assembly, flexible operation and adjustment of the system are realized.
With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, the second power supply assembly includes:
The input end of the second power supply piece is connected with the output end of the fuel cell system, the positive electrode of the output end of the second power supply piece is connected with the second input end of the first rectifying piece, and the negative electrode of the output end of the second power supply piece is connected with the negative electrode output end of the fuel cell cogeneration system;
The first input end of the second rectifying piece is connected with the positive electrode of the output end of the first power supply piece, the second input end of the second rectifying piece is connected with the positive electrode of the output end of the second power supply piece, and the output end of the second rectifying piece is connected with the switch assembly.
Through the technical scheme, the second power supply assembly converts the alternating current power supply into the required direct current power supply through the second rectifying piece, so that more reliable power supply is provided for the whole system, and the energy efficiency of the whole system is improved.
With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, the fuel cell cogeneration start-stop device further includes:
The input end of the charging assembly is connected with the output end of the fuel cell system, the positive electrode of the output end of the charging assembly is connected with the positive electrode of the output end of the third power supply assembly through the switch assembly, and the negative electrode of the output end of the charging assembly is connected with the negative electrode of the output end of the third power supply assembly.
Through foretell technical scheme, the output energy of fuel cell system can be effectively with the subassembly that charges turns into the electric energy, and the subassembly that charges provides quick and efficient charging for third power supply subassembly through being connected with third power supply subassembly to avoided third power supply subassembly's insufficient power risk, prolonged third power supply subassembly's life, improved the stability of the power supply of cogeneration system.
With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, the switch assembly includes: the circuit breaker, the starting switch, the first coil, the first contact and the second contact corresponding to the first coil, the third contact corresponding to the second coil, the fourth contact corresponding to the third coil and the fifth contact corresponding to the second coil,
The first input end of the circuit breaker is connected with the positive electrode of the output end of the third power supply assembly, the second input end of the circuit breaker is connected with the negative electrode of the output end of the third power supply assembly, the first output end of the circuit breaker is connected with the other end of the third contact, and the second output end of the circuit breaker is connected with the negative electrode output end of the fuel cell cogeneration system;
one end of the starting switch is connected with one end of the first coil and one end of the second contact respectively, and the other end of the starting switch is connected with one end of the first contact and the other end of the second contact respectively;
The other end of the first coil is connected with one end of the fifth contact;
the other end of the first contact is connected with the positive electrode output end of the fuel cell cogeneration system;
the other end of the second contact is respectively connected with the other end of the starting switch and one end of the third contact;
the other end of the third contact is respectively connected with one end of the fourth contact and the first output end of the circuit breaker;
The other end of the fourth contact is connected with the positive electrode of the output end of the charging assembly;
the other end of the fifth contact is connected with the negative electrode output end of the fuel cell cogeneration system;
one end of the second coil and one end of the third coil are connected with the output end of the first rectifying part, and the other end of the second coil and the other end of the third coil are connected with the negative electrode output end of the fuel cell cogeneration system.
Through the technical scheme, the circuit breaking switch can be rapidly cut off when the circuit is required to be broken, and the circuit can be protected from overload or short circuit faults. The starting switch is convenient for starting or stopping the circuit, and realizes the control and operation of the circuit. The coil may generate a magnetic field for controlling the operation state of other components. Each contact can be conducted or disconnected in the circuit, so that connection and isolation of the circuit are realized, and control and operation of the circuit are facilitated.
With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, the first contact, the second contact, and the fourth contact are all normally open contacts, and the third contact and the fifth contact are normally closed contacts.
Through the technical scheme, the first contact, the second contact and the fourth contact are normally open contacts, and can be kept in an open state under normal conditions and can be closed only when needed; the third contact and the fifth contact are normally closed contacts, and are kept in a closed state under normal conditions, and can be opened only when needed, and the normally open contacts and the normally closed contacts can be used for controlling connection and disconnection of a circuit according to requirements, so that circuit connection under specific conditions is ensured, and higher safety and stability are provided.
With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, the fuel cell cogeneration start-stop device further includes:
And one end of the safety component is connected with the first output end of the circuit breaker, and the other end of the safety component is respectively connected with the other end of the third contact and one end of the fourth contact.
Through the technical scheme, the safety component can detect abnormal conditions such as overcurrent and overload in the circuit and cut off the circuit in time, so that dangerous conditions such as short circuit and overheat of the circuit are prevented, the risk of circuit damage is effectively reduced, and the safety of circuit equipment and personnel is protected.
With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, the safety component is a fuse.
Through foretell technical scheme, the insurance subassembly is the fuse, can cut off the electric current rapidly when circuit overload or short circuit, plays overload protection's effect to effectively prevent circuit and equipment and impaired because of the overload, protection circuit equipment and personnel's safety.
With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, the start switch is a self-reset switch.
Through the technical scheme, the self-resetting switch can automatically recover to the initial state without manual intervention, so that faults or accidents caused by manual operation errors can be reduced, and the reliability and the safety of the system are improved.
According to the fuel cell cogeneration start-stop device, the input end of the first power supply assembly is connected with a power grid, and the input end of the second power supply assembly is connected with the output end of the fuel cell system; the switch assembly is respectively connected with the output end of the first power supply assembly to the output end of the third power supply assembly and is provided with a plurality of switch states, and each switch state corresponds to the running state of the fuel cell cogeneration system; the control assembly is respectively connected with the first power supply assembly, the second power supply assembly and the switch assembly, and controls the switch assembly to be in a corresponding switch state according to the current running state of the fuel cell cogeneration system so as to supply power to a load through the first power supply assembly and/or the second power supply assembly or supply power to the load through the third power supply assembly. The device has solved the problem that system battery is easy to feed and damages and the system low pressure power supply is unstable among the correlation technique, has realized the seamless switching of power, has reduced the risk of battery deficiency simultaneously, has prolonged the life of battery, has improved the stability of the power supply of cogeneration system.
In a second aspect, a fuel cell cogeneration system is provided, including the fuel cell cogeneration start-stop device described above.
According to the fuel cell cogeneration system, the fuel cell cogeneration start-stop device solves the problems that a system storage battery is easy to feed and damaged and the low-voltage power supply of the system is unstable in the related art, realizes the seamless switching of power supply, reduces the power shortage risk of the storage battery, prolongs the service life of the storage battery, and improves the power supply stability of the cogeneration system.
Drawings
Fig. 1 is a schematic structural view of a fuel cell cogeneration system according to an embodiment of the application;
Fig. 2 is a schematic structural diagram of a cogeneration start-stop device for a fuel cell according to an embodiment of the application;
FIG. 3 is a schematic diagram of a fuel cell cogeneration start-stop signal circuit according to an embodiment of the application;
FIG. 4 is a startup current flow diagram of a fuel cell cogeneration start-stop device according to an embodiment of the application;
Fig. 5 is a shutdown current flow diagram of a fuel cell cogeneration start-stop apparatus according to an embodiment of the application.
Detailed Description
The technical scheme of the application will be clearly and thoroughly described below with reference to the accompanying drawings. Wherein, in the description of the embodiments of the present application, unless otherwise indicated, "/" means or, for example, a/B may represent a or B: the text "and/or" is merely an association relation describing the associated object, and indicates that three relations may exist, for example, a and/or B may indicate: the three cases where a exists alone, a and B exist together, and B exists alone, and furthermore, in the description of the embodiments of the present application, "plural" means two or more than two.
The terms "first," "second," and the like, are used below for descriptive purposes only and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
Before describing the Fuel cell cogeneration start-stop device of the embodiment of the application, a Fuel cell cogeneration system is first described, as shown in fig. 1, where the Fuel cell cogeneration system mainly comprises a Fuel cell system (FCS, fuel CELL SYSTEM), an energy storage Battery system (BMS, battery MANAGEMENT SYSTEM), a direct/alternating current system (PCS, power Conversion System), and cogeneration (CHP, combined Heat and Power), so as to realize off-grid/grid connection and hot water supply functions. Fig. 2 is a schematic block diagram of a cogeneration start-stop device for a fuel cell according to an embodiment of the application.
As shown in fig. 2, the fuel cell cogeneration start-stop apparatus 10 includes: the first power supply assembly 100, the second power supply assembly 200, the third power supply assembly 300, the switching assembly 400, and a control assembly (not shown in the drawings).
Wherein, the input end of the first power supply assembly 100 is connected with the power grid, and the input end of the second power supply assembly 200 is connected with the output end of the fuel cell system; the input end of the switch assembly 400 is respectively connected with the output end of the first power supply assembly 100, the output end of the second power supply assembly 200 and the output end of the third power supply assembly 300, the output end of the switch assembly 400 is connected with the load power supply input end, the switch assembly 400 has a plurality of switch states, and each switch state corresponds to the operation state of the fuel cell cogeneration system; the control assembly is respectively connected with the first to third power supply assemblies 100 to 300 and the switch assembly 400, and controls the switch assembly 400 to be in a corresponding switch state according to the current operation state of the fuel cell cogeneration system, so as to supply power to the load through the first power supply assembly 100 and/or the second power supply assembly 200, or supply power to the load through the third power supply assembly 300.
Preferably, the third power supply assembly 300 may be a battery, which is not particularly limited herein.
Specifically, the fuel cell cogeneration start-stop device can realize the effective connection between the fuel cell system and the power grid, and can use a proper power supply assembly for load power supply according to the running state of the fuel cell cogeneration system by reasonably regulating and controlling the on-off state, thereby improving the energy utilization efficiency.
Further, the switch assembly 400 has various switch states, and can be adjusted according to the current operation state of the fuel cell cogeneration system to meet different power supply requirements of loads, the first power supply assembly 100 can supply power to the loads, the second power supply assembly 200 can supply power to the loads, the first power supply assembly 100 and the second power supply assembly 200 can supply power to the loads at the same time, and the third power supply assembly 300 can supply power to the loads.
When the first power supply assembly 100 or the second power supply assembly 200 fails, the third power supply assembly 300 provides a power output to supply power to the load.
In addition, the control assembly is connected with the power supply assembly and the switch assembly 400, and can control the switch assembly to be in a corresponding switch state according to the current running state of the fuel cell cogeneration system, and the stability and the reliability of power supply are ensured through reasonable control.
Further, in some embodiments, as shown in fig. 2, the first power supply assembly 100 includes: a first power supply member G01 and a first rectifying member V01. The input end of the first power supply piece G01 is connected with a power grid, and the negative electrode of the output end of the first power supply piece G01 is connected with the negative electrode output end of the fuel cell cogeneration system; the first rectifying member V01, the first input terminal of the first rectifying member V01 is connected to the positive electrode of the output terminal of the first power supply member G01, the second input terminal of the first rectifying member V01 is connected to the second power supply assembly 200, and the output terminal of the first rectifying member V01 is connected to the switch assembly 400.
Alternatively, the first rectifying member V01 may be a rectifying bridge, which is not particularly limited herein.
Specifically, through the combined use of the first power supply piece G01 and the first rectifying piece V01, the electric energy input by the power grid can be effectively converted into the power supply energy required by the fuel cell cogeneration system, and the power supply efficiency is improved. In addition, the first input end of the first rectifying part V01 is connected with the positive electrode of the output end of the first power supply part G01, the second input end of the first rectifying part V01 is connected with the second power supply assembly, connection of multiple groups of power supplies is achieved, meanwhile, the output end of the first rectifying part V01 is connected with the switch assembly, the power supply switching state can be controlled according to requirements, and flexible power supply management is achieved.
Further, in some embodiments, as shown in fig. 2, the second power supply assembly 200 includes: the input end of the second power supply piece G02 is connected with the output end of the fuel cell system, the positive electrode of the output end of the second power supply piece G02 is connected with the second input end of the first rectifying piece V01, and the negative electrode of the output end of the second power supply piece G02 is connected with the negative electrode output end of the fuel cell cogeneration system; the first input end of the second rectifying part V02 is connected with the positive electrode of the output end of the first power supply part G01, the second input end of the second rectifying part V02 is connected with the positive electrode of the output end of the second power supply part G02, and the output end of the second rectifying part V02 is connected with the switch assembly 400.
Alternatively, the second rectifying member V02 may be a rectifying bridge, which is not particularly limited herein.
Specifically, the electric energy generated by the fuel cell system is supplied to the fuel cell cogeneration system through the second power supply assembly 200, so that the utilization rate of energy is improved, and in addition, the second rectifying part V02 in the second power supply assembly 200 can effectively control and regulate the electric energy, so that the stable operation of the system is ensured.
Further, in some embodiments, as shown in fig. 2, the switch assembly 400 includes: a cut-off switch qf1, a start switch SB, a first contact KM1_ (3, 4) and a second contact KM1_ (13, 14) corresponding to the first coil KM1 and the first coil KM1, a third contact KM2_ (2, 3) corresponding to the second coil KM2 and the second coil KM2, a fourth contact KM3_ (3, 4) corresponding to the third coil KM3 and the third coil KM3, and a fifth contact K01_ (2, 3), wherein a first input terminal of the cut-off switch QF1 is connected to an anode of an output terminal of the third power supply assembly 300, a second input terminal of the cut-off switch QF1 is connected to a cathode of an output terminal of the third power supply assembly 300, a first output terminal of the cut-off switch QF1 is connected to the other terminal of the third contact KM2_ (2, 3), and a second output terminal of the cut-off switch QF1 is connected to a cathode output terminal of the fuel cell cogeneration system; one end of the starting switch SB is respectively connected with one end of the first coil KM1 and one end of the second contact KM1_ (13, 14), and the other end of the starting switch SB is respectively connected with one end of the first contact KM1_ (3, 4) and the other end of the second contact KM1_ (13, 14); the other end of the first coil KM1 is connected with one end of a fifth contact K01_ (2, 3); the other end of the first contact KM1_ (3, 4) is connected with the positive electrode output end of the fuel cell cogeneration system; the other end of the second contact KM1_ (13, 14) is connected with the other end of the starting switch SB and one end of the third contact KM2_ (2, 3) respectively; the other end of the third contact KM2_ (2, 3) is respectively connected with one end of the fourth contact KM3_ (3, 4) and the first output end of the cut-off switch QF 1; the other end of the fourth contact KM3_ (3, 4) is connected with the positive electrode of the output end of the charging assembly G03; the other end of the fifth contact K01_ (2, 3) is connected with the negative electrode output end of the fuel cell cogeneration system; one end of the second coil KM2 and one end of the third coil KM3 are connected with the output end of the first rectifying part V01, and the other end of the second coil KM2 and the other end of the third coil KM3 are connected with the negative electrode output end of the fuel cell cogeneration system.
As a possible implementation manner, when the system is powered on, the circuit breaking switch QF1 is closed, the start switch SB is pressed, the first coil KM1 gets the power action and realizes self-locking, the first contact KM1_ (3, 4) is switched on, the power supply loop of the third power supply component is switched on, the system starts to initialize and completes self-checking, the first power supply component G01 (grid-connected) outputs the power supply after the system operates, or the second power supply component G02 (off-grid) outputs the power supply, or the first power supply component G01 (grid-connected) and the second power supply component G02 (off-grid) simultaneously output the power supply, the second coil KM2 gets the power, or the third coil KM3 gets the power, or the second coil KM2 and the third coil KM3 get the power simultaneously, the third contact KM2_ (2, 3) is switched off, the power supply loop of the third power supply component is switched off, the fourth contact KM3_ (3, 4) is switched on, the charging loop of the third power supply component is charged, the low-voltage power supply component is charged by the first power supply component G01 (off grid-connected) or the second power supply component G02 (off grid), or the third power supply component G02 (off grid) is simultaneously supplied by the first power supply component G01 (off grid) or the third power supply component G02) and the power component (off, the third power supply component is kept in a power supply state, the grid state is kept full, and the power supply component (is kept at the grid).
As another possible implementation manner, when the system power-down procedure is executed, a shutdown condition is triggered, the system exits from an operation mode, the first power supply module 100 and/or the second power supply module 200 stop outputting power, the second coil KM2 and/or the third coil KM3 lose power, the third contact KM2_ (2, 3) is closed, the third power supply module 300 power supply loop is turned on, the fourth contact KM3_ (3, 4) is opened, the third power supply module 300 charging loop is cut off, the system power supply is provided by the third power supply module 300 and is in an upper low voltage state, as shown in fig. 3, the system software sends an instruction to the CAN-IO module, the CAN-IO module X01 outputs a high level, the fifth coil gets power, the fifth contact K01_ (2, 3) is turned off, the first coil KM1 loses power, the first contact KM1_ (3, 4) is turned off, the power supply is turned off, the cut off circuit of the cut-off switch QF1, and the power supply module loop is cut off, thereby completing the power-down procedure.
Further, in some embodiments, the start switch SB is a self-resetting switch.
Specifically, the starting switch SB can simplify the operation process for the self-resetting switch, does not need to manually operate a reset or restart button during starting, automatically restores to a normal state, and can automatically restore the system to the normal operation state when unexpected outage or other faults occur, so that the manpower maintenance and the maintenance cost are reduced.
Further, in some embodiments, the fuel cell cogeneration start-stop device 10 further includes: the input end of the charging assembly G03 is connected with the output end of the fuel cell system, the positive electrode of the output end of the charging assembly G03 is connected with the positive electrode of the output end of the third power supply assembly 300 through the switch assembly 400, and the negative electrode of the output end of the charging assembly G03 is connected with the negative electrode of the output end of the third power supply assembly 300.
Specifically, the charging assembly G03 in the fuel cell cogeneration start-stop device is connected with the third power supply assembly 300, so that the third power supply assembly 300 can be charged, the power shortage risk of the third power supply assembly 300 is prevented, the service life of the third power supply assembly 300 is prolonged, the power supply stability of the cogeneration system is improved, and in addition, the charging assembly G03 also supports floating charging and full automatic power-off, so that the damage of equipment is prevented.
Further, in some embodiments, the fuel cell cogeneration start-stop device 10 further includes: and one end of the safety component FU01 is connected with the first output end of the circuit breaker QF1, and the other end of the safety component FU01 is respectively connected with the other end of the third contact KM2_ (2, 3) and one end of the fourth contact KM3_ (3, 4).
Further, in some embodiments, fuse element FU01 is a fuse.
Specifically, the fuel cell cogeneration start-stop device adopts the safety component FU01 as an important safety protection measure, can rapidly cut off a circuit under abnormal conditions such as excessive current or short circuit and the like, effectively avoids the safety risk caused by equipment faults, and meanwhile, the fuel cell cogeneration start-stop device 10 adopts the combination of the circuit breaker QF1 and the safety component FU01, and can provide reliable power connection and cut-off functions when the system is started or stopped, thereby ensuring the normal operation and stop of equipment.
In order to facilitate a clearer and more visual understanding of the fuel cell cogeneration start-stop device according to the embodiments of the present application, a detailed description will be given below with reference to specific embodiments.
As shown in fig. 4, when the third power supply component is a battery, the starting current process of the fuel cell cogeneration start-stop device includes the following steps:
S401, start.
S402, starting SB.
S403, the KM1 coil is attracted.
S404, the KM1 (3, 4) contacts are closed and self-locking, and a storage battery power supply loop is connected.
S405, outputting the power storage power supply, and completing initialization and self-checking of the system.
S406, judging whether the G01/G02 work output is normal, if so, executing S407, otherwise, executing S402 and S409.
S407, the KM2/KM3 coil is electrified and attracted.
S408, KM2 (2, 3) contacts are opened, and KM3 (3, 4) contacts are closed.
S409, the power supply circuit of the storage battery is cut off, and the charging circuit is switched on.
S410, G01 (grid-connected)/G02 (off-grid) outputs 24V power.
S411, the cogeneration system apparatus operates.
S412, powering up is finished.
In addition, when the third power supply component is a storage battery, the shutdown current path of the fuel cell cogeneration start-stop device is shown in fig. 5, and the method comprises the following steps:
s501, start.
S502, triggering a shutdown condition (HMI shutdown key).
S503, the system exits the operation mode (lower high voltage power).
S504, the high-voltage side of G01/G02 is powered down.
S505, judging whether the G01/G02 stops working output, if so, executing S506, otherwise, executing S502.
S506, the KM2/KM3 coil is powered off and disconnected.
S507, the KM2 (2, 3) contacts are closed, and the KM3 (3, 4) contacts are opened.
S508, the power supply circuit of the storage battery is switched on, and the charging circuit is switched off.
S509, the system software sends an instruction to the CAN-IO module.
S510, the CAN-IO module X01 outputs a high level.
S511, the K01 coil is powered on, and the K01 (2, 3) contact is opened.
S512, the KM21 coil is powered off, and the contact of KM1 (3, 4) is disconnected.
S513, cutting off a power supply loop of the storage battery and disconnecting the power supply.
S514, the QF1 switch is turned off.
And S515, powering down is finished.
According to the fuel cell cogeneration start-stop device provided by the embodiment of the application, the input end of the first power supply assembly is connected with a power grid, and the input end of the second power supply assembly is connected with the output end of the fuel cell system; the switch assembly is respectively connected with the output end of the first power supply assembly to the output end of the third power supply assembly and is provided with a plurality of switch states, and each switch state corresponds to the running state of the fuel cell cogeneration system; the control assembly is respectively connected with the first power supply assembly, the second power supply assembly and the switch assembly, and controls the switch assembly to be in a corresponding switch state according to the current running state of the fuel cell cogeneration system so as to supply power to a load through the first power supply assembly and/or the second power supply assembly or supply power to the load through the third power supply assembly. The device has solved the problem that system battery is easy to feed and damages and the system low pressure power supply is unstable among the correlation technique, has realized the seamless switching of power, has reduced the risk of battery deficiency simultaneously, has prolonged the life of battery, has improved the stability of the power supply of cogeneration system.
The embodiment of the application provides a fuel cell cogeneration system, which comprises the fuel cell cogeneration start-stop device of the embodiment, and solves the problems of easy power feeding damage of a system storage battery and unstable low-voltage power supply of the system in the related technology by the fuel cell cogeneration start-stop device, thereby realizing seamless switching of power supply, reducing the power shortage risk of the storage battery, prolonging the service life of the storage battery and improving the power supply stability of the cogeneration system.
It will be appreciated by those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional modules is illustrated, and in practical application, the above-described functional allocation may be performed by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to perform all or part of the functions described above.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of modules or units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another apparatus, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.
Claims (10)
1. A fuel cell cogeneration start-stop device, comprising:
the first power supply assembly is connected with the power grid at the input end, and the second power supply assembly is connected with the output end of the fuel cell system at the input end;
The input end of the switch component is respectively connected with the output end of the first power supply component, the output end of the second power supply component and the output end of the third power supply component, the output end of the switch component is connected with the load power supply input end, and the switch component has a plurality of switch states, and each switch state corresponds to the running state of the fuel cell cogeneration system; and
The control assembly is respectively connected with the first power supply assembly, the second power supply assembly and the switch assembly, and controls the switch assembly to be in a corresponding switch state according to the current running state of the fuel cell cogeneration system so as to supply power to a load through the first power supply assembly and/or the second power supply assembly or supply power to the load through the third power supply assembly.
2. The fuel cell cogeneration start-stop apparatus of claim 1, wherein said first power supply assembly comprises:
The input end of the first power supply piece is connected with the power grid, and the negative electrode of the output end of the first power supply piece is connected with the negative electrode output end of the fuel cell cogeneration system;
The first rectifying part, the first input of first rectifying part with the positive pole of the output of first power supply spare links to each other, the second input of first rectifying part with the second power supply subassembly links to each other, the output of first rectifying part with switch assembly links to each other.
3. The fuel cell cogeneration start-stop apparatus of claim 2, wherein said second power supply assembly comprises:
The input end of the second power supply piece is connected with the output end of the fuel cell system, the positive electrode of the output end of the second power supply piece is connected with the second input end of the first rectifying piece, and the negative electrode of the output end of the second power supply piece is connected with the negative electrode output end of the fuel cell cogeneration system;
The first input end of the second rectifying piece is connected with the positive electrode of the output end of the first power supply piece, the second input end of the second rectifying piece is connected with the positive electrode of the output end of the second power supply piece, and the output end of the second rectifying piece is connected with the switch assembly.
4. The fuel cell cogeneration start-stop apparatus of claim 3, further comprising:
The input end of the charging assembly is connected with the output end of the fuel cell system, the positive electrode of the output end of the charging assembly is connected with the positive electrode of the output end of the third power supply assembly through the switch assembly, and the negative electrode of the output end of the charging assembly is connected with the negative electrode of the output end of the third power supply assembly.
5. The fuel cell cogeneration start-stop apparatus of claim 4, wherein said switch assembly comprises: the circuit breaker, the starting switch, the first coil, the first contact and the second contact corresponding to the first coil, the third contact corresponding to the second coil, the fourth contact corresponding to the third coil and the fifth contact corresponding to the second coil,
The first input end of the circuit breaker is connected with the positive electrode of the output end of the third power supply assembly, the second input end of the circuit breaker is connected with the negative electrode of the output end of the third power supply assembly, the first output end of the circuit breaker is connected with the other end of the third contact, and the second output end of the circuit breaker is connected with the negative electrode output end of the fuel cell cogeneration system;
one end of the starting switch is connected with one end of the first coil and one end of the second contact respectively, and the other end of the starting switch is connected with one end of the first contact and the other end of the second contact respectively;
The other end of the first coil is connected with one end of the fifth contact;
the other end of the first contact is connected with the positive electrode output end of the fuel cell cogeneration system;
the other end of the second contact is respectively connected with the other end of the starting switch and one end of the third contact;
the other end of the third contact is respectively connected with one end of the fourth contact and the first output end of the circuit breaker;
The other end of the fourth contact is connected with the positive electrode of the output end of the charging assembly;
the other end of the fifth contact is connected with the negative electrode output end of the fuel cell cogeneration system;
one end of the second coil and one end of the third coil are connected with the output end of the first rectifying part, and the other end of the second coil and the other end of the third coil are connected with the negative electrode output end of the fuel cell cogeneration system.
6. The fuel cell cogeneration start-stop device of claim 5, wherein the first contact, the second contact, and the fourth contact are all normally open contacts, and the third contact and the fifth contact are all normally closed contacts.
7. The fuel cell cogeneration start-stop apparatus of claim 6, further comprising:
And one end of the safety component is connected with the first output end of the circuit breaker, and the other end of the safety component is respectively connected with the other end of the third contact and one end of the fourth contact.
8. The fuel cell cogeneration start-stop apparatus of claim 7, wherein said fuse assembly is a fuse.
9. The fuel cell cogeneration start-stop apparatus of claim 5, wherein said start switch is a self-resetting switch.
10. A fuel cell cogeneration system, comprising: a fuel cell cogeneration start-stop apparatus according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322744184.XU CN221150963U (en) | 2023-10-12 | 2023-10-12 | Fuel cell cogeneration start-stop device and fuel cell cogeneration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322744184.XU CN221150963U (en) | 2023-10-12 | 2023-10-12 | Fuel cell cogeneration start-stop device and fuel cell cogeneration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221150963U true CN221150963U (en) | 2024-06-14 |
Family
ID=91418904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322744184.XU Active CN221150963U (en) | 2023-10-12 | 2023-10-12 | Fuel cell cogeneration start-stop device and fuel cell cogeneration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221150963U (en) |
-
2023
- 2023-10-12 CN CN202322744184.XU patent/CN221150963U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102075004B (en) | Battery protection device and method of direct-current (DC) power supply | |
| CN109245283B (en) | Standby battery monitoring system and uninterrupted power supply intelligent switching and monitoring system | |
| CN202260610U (en) | Automatic switching device for two power supplies of direct-current system | |
| US11735953B2 (en) | Apparatus and method for controlling battery module, power supply device and system | |
| CN111987792A (en) | Power supply apparatus and power supply method thereof | |
| CN221150963U (en) | Fuel cell cogeneration start-stop device and fuel cell cogeneration system | |
| CN205104984U (en) | Electronic excavator stand -by power supply system | |
| CN111130212A (en) | Standby power control device | |
| CN109586395B (en) | Uninterrupted power supply intelligent switching and monitoring method | |
| CN114884168A (en) | Transformer substation direct current system based on lithium iron phosphate storage battery | |
| CN110137961B (en) | O-type load power supply system of thermal power plant and control method | |
| CN109274173A (en) | A kind of dual redundant power supply system | |
| CN113555937B (en) | Automatic switching method for three-charging and two-charging | |
| CN217087556U (en) | Power supply device and data center | |
| CN201113522Y (en) | Automatic switchover device for double loop power supply source | |
| CN216721006U (en) | Automatic input device for open circuit protection of storage battery pack of transformer substation | |
| CN218633432U (en) | Power supply system and power supply equipment | |
| CN201549928U (en) | Intelligent charge control device | |
| CN219458737U (en) | Backup storage battery pack power supply device of switching power supply system | |
| CN218161838U (en) | High-voltage energy storage control circuit and energy storage high-voltage box | |
| CN214755497U (en) | Battery feed protection circuit using micro-break switch and release | |
| CN214479796U (en) | FSU (frequency selective Unit) intelligent standby power module of base station | |
| CN213906376U (en) | Differentiated standby power control structure | |
| CN213783131U (en) | Power supply module | |
| CN213879375U (en) | Permanent magnet dual-power system controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |