Dual-power-supply hybrid power device and hybrid power equipment

Abstract

The utility model relates to a dual-power-source hybrid power device and hybrid power equipment, the dual-power-source hybrid power device comprises a fuel cell module, a lithium battery module, a control management module and a load output module, the control management module is connected with the fuel cell module and the lithium battery module, and the output end of the load output module is connected with a load. The system further comprises a DC-DC direct current voltage stabilization module, the input end of the DC-DC direct current voltage stabilization module is connected with the output end of the fuel cell module and the output end of the lithium battery module, the fuel cell module and the lithium battery module are connected in parallel, and the output end of the DC-DC direct current voltage stabilization module is connected with the load output module. The control management module is respectively connected with the fuel cell module and the DC-DC direct current voltage stabilization module so as to control the output characteristics of the fuel cell module, so that the system can operate more stably; the hybrid power equipment comprises the dual-power-supply hybrid power device, and the system can operate more stably as well.

Description

Technical Field

[0001] The present application relates to the technical field of hybrid systems, and in particular to a dual-power hybrid device and a hybrid power equipment. Background Art

[0002] The dual-power hybrid system uses two different power sources to supply power and switches or mixes them as needed. In the hybrid system of fuel cells and lithium batteries, the fuel cell can charge the lithium battery, and the lithium battery then outputs to the load end. At this time, the fuel cell and lithium battery as a whole present a similar one-way "series" mode. Since the fuel cell needs to be preheated at the beginning of the system operation and starts slowly, this similar one-way "series" mode makes the lithium battery a large "load" at the output end of the fuel cell. The voltage of the fuel cell may be quickly pulled down, which may easily cause the dual-power hybrid system to disconnect the fuel cell from external output. Summary of the invention

[0003] Based on the above technical problems, the present application provides a dual-power hybrid device and a hybrid power equipment, which can enable the hybrid system to operate stably.

[0004] In a first aspect, the present application provides a dual-power hybrid device, including a fuel cell module, a lithium battery module, a control management module and a load output module, the control management module is respectively connected to the fuel cell module and the lithium battery module, the output end of the load output module is connected to the load, the dual-power hybrid device also includes a DC-DC direct current voltage regulator module, the input end of the DC-DC direct current voltage regulator module is respectively connected to the output end of the fuel cell module and the output end of the lithium battery module, the fuel cell module and the lithium battery module are connected in parallel, the output end of the DC-DC direct current voltage regulator module is connected to the load output module, and the control management module is respectively connected to the fuel cell module and the DC-DC direct current voltage regulator module to control the output characteristics of the fuel cell module.

[0005] A DC-DC voltage regulator module is designed to be added to the hardware architecture of the hybrid system. The fuel cell module and the lithium battery module are connected in parallel, and the outputs of the two are output to the load output module via the DC-DC voltage regulator module. The original mode is the "series" mode of the fuel cell and the lithium battery, which is improved to the "parallel" mode of the fuel cell module and the lithium battery module. The lithium battery module is no longer a "load" at the output end of the fuel cell module, and the lithium battery module can participate in the output of the hybrid system to the load; the control management module is connected to the DC-DC voltage regulator module, and the DC-DC voltage regulator module can communicate with the control management module, receive the control signal sent by the control management module in real time, and adjust and manage the output of the fuel cell module and the lithium battery module to stably control the output characteristics of the fuel cell module, thereby avoiding the situation where the output voltage of the fuel cell module is quickly pulled down and the fuel cell module is disconnected, so that the hybrid system can operate stably.

[0006] Furthermore, the load output module includes a shunt, which is connected in series with the DC-DC direct current voltage regulator module to monitor the voltage and current at the output end of the DC-DC direct current voltage regulator module. The control management module is connected to the shunt to control the output characteristics of the fuel cell module according to the monitored voltage and current.

[0007] The shunt is installed between the DC-DC voltage regulator module and the load to monitor the output of the hybrid system to the load in real time. The control management module optimizes the control strategy according to the monitored voltage and current, controls the output characteristics of the fuel cell module, and ensures the smooth operation of the hybrid system.

[0008] Furthermore, the load output module includes an electromagnetic switch module, which is connected in series with the DC-DC voltage regulator module. The control management module is connected to the electromagnetic switch module to control the disconnection of the output channel of the DC-DC voltage regulator module under abnormal circumstances.

[0009] When the voltage of the fuel cell drops rapidly or the energy of the hybrid system is in an abnormal situation, the channel between the battery output end and the load end can be disconnected in time to protect each battery module.

[0010] Furthermore, an electromagnetic switch module is connected in series between the output end of the fuel cell module and the input end of the DC-DC direct current voltage regulator module, and the control management module is connected to the electromagnetic switch module to control the disconnection of the output channel of the fuel cell module under abnormal circumstances.

[0011] When the voltage of the fuel cell drops rapidly or the energy of the hybrid system is in an abnormal situation, the channel between the fuel cell module and the load end can be disconnected in time to protect the battery stack.

[0012] Furthermore, the electromagnetic switch module is a relay or a vacuum contactor.

[0013] Furthermore, the dual-power hybrid device also includes a bidirectional charging and discharging module, which is respectively connected to the output end of the lithium battery module and the input end of the DC-DC direct current voltage stabilizing module to control the charging and discharging of the lithium battery module.

[0014] The lithium battery module participates in the hybrid system's load output and takes on part of the fuel cell's load output pressure.

[0015] Furthermore, the bidirectional charge and discharge module includes a charging circuit and a discharging circuit. The output end of the fuel cell module is connected to the input end of the charging circuit so that when the fuel cell module provides power to the load, the lithium battery module is charged. The output end of the discharge circuit is connected to the input end of the DC-DC direct current voltage regulator module so that the lithium battery module provides power to the load.

[0016] While the fuel cell module is outputting to the load, it can slowly charge the lithium battery module, providing energy guarantee for the subsequent output of the lithium battery module to the load.

[0017] Furthermore, the fuel cell module is a hydrogen fuel cell.

[0018] In a second aspect, the present application provides a hybrid power device, comprising a load and a dual-power hybrid device as described in any one of the above items, wherein the dual-power hybrid device is used to provide power to the load. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the circuit principle of a dual-power hybrid device according to an embodiment of the present application;

[0020] Figure 2 Another schematic diagram of the circuit principle of the dual-power hybrid device according to an embodiment of the present application;

[0021] Figure 3 Schematic diagram of the hardware structure of the dual-power hybrid device according to an embodiment of the present application.

[0022] Explanation of the reference numerals: fuel cell module 1, lithium battery module 2, control management module 3, DC-DC direct current voltage stabilization module 4, shunt 5, electromagnetic switch module 6, bidirectional charge and discharge module 7, load 8. DETAILED DESCRIPTION

[0023] The present invention is described in detail below in conjunction with specific embodiments.

[0024] like Figure 1 and Figure 3 As shown, the fuel cell module 1 and the lithium battery module 2 of the dual power hybrid device of the embodiment of the present application are integrated in the same housing and controlled by the same hybrid system. The fuel cell module 1 is a hydrogen fuel cell module. Figure 1 As shown, the dual power hybrid device includes a fuel cell module 1, a lithium battery module 2, a control management module 3 and a load output module. The control management module 3 is connected to the fuel cell module 1 and the lithium battery module 2, respectively. Figure 1 As shown, the load output module is a series circuit of a shunt 5 and an electromagnetic switch module 6, the electromagnetic switch module 6 can be a relay, the output end of the load output module is connected to the load 8, the dual power hybrid device also includes a DC-DC direct current voltage regulator module 4, the input end of the DC-DC direct current voltage regulator module 4 is respectively connected to the output end of the fuel cell module 1 and the output end of the lithium battery module 2, the fuel cell module 1 and the lithium battery module 2 are connected in parallel, the output end of the DC-DC direct current voltage regulator module 4 is connected to the load output module, and the control management module 3 is respectively connected to the fuel cell module 1 and the DC-DC direct current voltage regulator module 4 to control the output characteristics of the fuel cell module 1.

[0025] A DC-DC voltage regulator module 4 is designed to be added to the hardware architecture of the hybrid system. The fuel cell module 1 and the lithium battery module 2 are connected in parallel, and the outputs of the two are output to the load output module via the DC-DC voltage regulator module 4. The original mode is the "series" mode of the fuel cell and the lithium battery, which is improved to the "parallel" mode of the fuel cell module 1 and the lithium battery module 2. The lithium battery module 2 is no longer the "load" at the output end of the fuel cell module 1, and the lithium battery module 2 can participate in the output of the hybrid system to the load 8; the control management module 3 is connected to the DC-DC voltage regulator module 4, and the DC-DC voltage regulator module 4 can communicate with the control management module 3, receive the control signal sent by the control management module 3 in real time, and adjust and manage the output of the fuel cell module 1 and the lithium battery module 2 to stably control the output characteristics of the fuel cell module 1, thereby avoiding the situation where the output voltage of the fuel cell module 1 is quickly pulled down and the fuel cell module 1 is disconnected, so that the hybrid system can operate stably.

[0026] The dual-power hybrid device is designed with multiple voltage acquisition unit modules and current acquisition unit modules to optimize the control strategy according to the voltage data and current data of each channel. Figure 1 As shown, the load output module includes a shunt 5, which is connected in series with the DC-DC voltage regulator module 4 to monitor the voltage and current at the output end of the DC-DC voltage regulator module 4. The control management module 3 is connected to the shunt 5 to control the output characteristics of the fuel cell module 1 according to the monitored voltage and current. The output characteristics of the fuel cell module 1 include current, voltage and power. The shunt 5 is arranged between the DC-DC voltage regulator module 4 and the load 8 to monitor the output of the hybrid system to the load 8 in real time. The control management module 3 optimizes the control strategy according to the monitored voltage and current, controls the output characteristics of the fuel cell module 1, and ensures the smooth operation of the hybrid system. In an optional embodiment, as Figure 2 As shown, a shunt 5 is provided at the output end of the hydrogen fuel cell module 1. In addition to monitoring the voltage and current, the control management module 3 also monitors the temperature, air pressure, flow rate and other data of the hydrogen fuel cell module 1 to integrate various monitoring data and select the best control strategy.

[0027] An electromagnetic switch module 6 is installed at the rear end of the fuel cell module 1 and the rear end of the lithium battery module 2. The electromagnetic switch module 6 can be a relay (such as Figure 1 shown) or vacuum contactor (as Figure 2 As shown), when the voltage drops rapidly or the system energy is in an abnormal state, the hydrogen fuel cell-lithium battery and the lithium battery-load terminals can be controlled separately in time. Specifically, Figure 1As shown, the load output module includes an electromagnetic switch module 6, which is a relay. The electromagnetic switch module 6 is connected in series with the DC-DC voltage regulator module 4, and the control management module 3 is connected to the electromagnetic switch module 6 to control the disconnection of the output channel of the DC-DC voltage regulator module 4 under abnormal circumstances. In the event that the voltage of the fuel cell is rapidly reduced or the energy of the hybrid system is in an unconventional abnormal situation, the channel between the battery output end and the load end can be disconnected in time, which is beneficial to protect each battery module. An electromagnetic switch module 6 is connected in series between the output end of the fuel cell module 1 and the input end of the DC-DC voltage regulator module 4, and the control management module 3 is connected to the electromagnetic switch module 6 to control the disconnection of the output channel of the fuel cell module 1 under abnormal circumstances. The channel between the fuel cell module 1 and the load end can be disconnected in time to protect the battery stack.

[0028] like Figure 1 As shown, the dual-power hybrid device also includes a bidirectional charging and discharging module 7, which is respectively connected to the output end of the lithium battery module 2 and the input end of the DC-DC direct current voltage regulator module 4, so as to control the charging and discharging of the lithium battery module 2. The lithium battery module 2 participates in the output of the hybrid system to the load 8, and bears part of the pressure of the fuel cell output to the load 8. Furthermore, the bidirectional charging and discharging module 7 includes a charging circuit and a discharging circuit. The output end of the fuel cell module 1 is connected to the input end of the charging circuit, so that the fuel cell module 1 can provide power to the load 8 and the lithium battery module 2 at the same time. The output end of the discharge circuit is connected to the input end of the DC-DC direct current voltage regulator module 4, so that the lithium battery module 2 provides power to the load 8. The charging circuit and the discharging circuit both include diodes, and the lithium battery module includes an air switch and an aviation connector ( Figure 1 When the fuel cell module 1 outputs to the load 8, the lithium battery module 2 can be slowly charged, thereby providing energy guarantee for the subsequent output of the lithium battery module 2 to the load 8.

[0029] The present application also provides a hybrid power device, including a load 8 and the dual-power hybrid device described above, the dual-power hybrid device is used to provide power to the load 8; specifically, the hybrid power device can be a hybrid vehicle, a hybrid ship, an unmanned aerial vehicle, etc. The original mode is a "series" mode of fuel cells and lithium batteries, which is improved to a "parallel" mode of fuel cell modules and lithium battery modules. The lithium battery module is no longer a "load" at the output end of the fuel cell module. The lithium battery module can participate in the output of the hybrid system to the load, allowing the system to operate stably.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A dual-power hybrid device, comprising a fuel cell module, a lithium battery module, a control management module and a load output module, wherein the control management module is connected to the fuel cell module and the lithium battery module respectively, and the output end of the load output module is connected to the load, characterized in that: It also includes a DC-DC direct current voltage regulator module, the input end of the DC-DC direct current voltage regulator module is respectively connected to the output end of the fuel cell module and the output end of the lithium battery module, the fuel cell module and the lithium battery module are connected in parallel, the output end of the DC-DC direct current voltage regulator module is connected to the load output module, and the control management module is respectively connected to the fuel cell module and the DC-DC direct current voltage regulator module to control the output characteristics of the fuel cell module.

2. The dual power hybrid device according to claim 1, characterized in that: The load output module includes a shunt, which is connected in series with the DC-DC direct current voltage regulator module to monitor the voltage and current at the output end of the DC-DC direct current voltage regulator module. The control management module is connected to the shunt to control the output characteristics of the fuel cell module according to the monitored voltage and current.

3. The dual power hybrid device according to claim 1, characterized in that: The load output module includes an electromagnetic switch module, which is connected in series with a DC-DC voltage regulator module. The control management module is connected to the electromagnetic switch module to control the disconnection of the output channel of the DC-DC voltage regulator module under abnormal circumstances.

4. The dual power hybrid device according to claim 1, characterized in that: An electromagnetic switch module is connected in series between the output end of the fuel cell module and the input end of the DC-DC direct current voltage regulator module, and the control management module is connected to the electromagnetic switch module to control the disconnection of the output channel of the fuel cell module under abnormal circumstances.

5. The dual power hybrid device according to claim 3 or 4, characterized in that: The electromagnetic switch module is a relay or a vacuum contactor.

6. The dual power hybrid device according to claim 1, characterized in that: It also includes a bidirectional charge and discharge module, which is respectively connected to the output end of the lithium battery module and the input end of the DC-DC direct current voltage stabilizing module to control the charging and discharging of the lithium battery module.

7. The dual power hybrid device according to claim 6, characterized in that: The bidirectional charge and discharge module includes a charging circuit and a discharging circuit. The output end of the fuel cell module is connected to the input end of the charging circuit so that when the fuel cell module provides power to the load, the lithium battery module is charged. The output end of the discharge circuit is connected to the input end of the DC-DC direct current voltage regulator module so that the lithium battery module provides power to the load.

8. The dual power hybrid device according to claim 1, characterized in that: The fuel cell module is a hydrogen fuel cell.

9. Hybrid power equipment, characterized in that: It comprises a load and a dual-power hybrid device as claimed in any one of claims 1 to 8, wherein the dual-power hybrid device is used to provide power to the load.

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