CN219534567U - Fork truck low noise hydrogen fuel cell system - Google Patents
Fork truck low noise hydrogen fuel cell system Download PDFInfo
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- CN219534567U CN219534567U CN202320734973.2U CN202320734973U CN219534567U CN 219534567 U CN219534567 U CN 219534567U CN 202320734973 U CN202320734973 U CN 202320734973U CN 219534567 U CN219534567 U CN 219534567U
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Abstract
The utility model discloses a forklift low-noise hydrogen fuel cell system which comprises a lithium ion super capacitor, a DC-DC converter and a hydrogen fuel cell power generation module, wherein the hydrogen fuel cell power generation module comprises a fuel cell stack, a cathode of the fuel cell stack is connected with an air supply module, the air supply module comprises an air filter, the air filter is connected with an inlet end of the cathode of the fuel cell stack through a first pipeline, a blower is arranged on the first pipeline, an anode end of the fuel cell stack is connected with the hydrogen supply module, an anode outlet end of the fuel cell stack is connected with a water storage tank, a water management module is arranged in the water storage tank, and a cooling end of the fuel cell stack is connected with a thermal management module. The air blower has relatively low rotating speed, can realize the functions realized by the air compressor, greatly reduces noise compared with the air compressor, and can absorb a part of heat emitted by a galvanic pile by adopting the solid metal hydrogen storage component, thereby reducing the power of a cooling fan in a thermal management system and reducing noise.
Description
Technical Field
The utility model relates to the technical field of forklift batteries, in particular to a forklift low-noise hydrogen fuel cell system.
Background
Forklifts play an extremely important role in the logistics system of enterprises. Internal combustion engines are commonly used as power sources for early forklifts. However, with the increase of global warming and environmental pollution, emission reduction and environmental protection are becoming important directions for the development of forklift power supply technology. By virtue of the advantages that the electric forklift is cleaner and more environment-friendly than the internal combustion forklift, and the continuous improvement and breakthrough of the battery technology, the gradual reduction of the battery cost and the electricity cost, the electric forklift gradually replaces the position of the internal combustion forklift internationally.
However, the air system of the hydrogen fuel cell system for the existing forklift adopts an air compressor, so that the general power of a cooling fan in a thermal management system is relatively high in order to ensure the optimal working temperature range of a galvanic pile; while for auxiliary energy sources such as: the lithium battery pack meets the requirement of high-rate charge and discharge, and the cooling fan is required to be assembled for the lithium battery pack alone, so that the noise is large in the operation of the forklift due to the series of settings, and the operation experience of a forklift driver is affected. Therefore, how to provide a forklift low noise hydrogen fuel cell system is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The utility model aims to provide a forklift low-noise hydrogen fuel cell system, the rotating speed of a blower is relatively low, but the blower can also realize the functions realized by an air compressor, compared with the air compressor, the noise is greatly reduced, and a solid metal hydrogen storage component is adopted, so that the system can absorb a part of heat emitted by a galvanic pile, reduce the power of a cooling fan in a thermal management system and reduce the noise.
According to the embodiment of the utility model, the forklift low-noise hydrogen fuel cell system comprises a lithium ion super capacitor, a DC-DC converter and a hydrogen fuel cell power generation module, wherein the lithium ion super capacitor is electrically connected with the DC-DC converter;
the hydrogen fuel cell power generation module comprises a fuel cell stack, the cathode of the fuel cell stack is connected with an air supply module, the air supply module comprises an air filter, the air filter is connected with the cathode inlet end of the fuel cell stack through a first pipeline, a blower is arranged on the first pipeline, the anode end of the fuel cell stack is connected with the hydrogen supply module, the anode outlet end of the fuel cell stack is connected with a water storage tank, a water management module is arranged in the water storage tank, and the cooling end of the fuel cell stack is connected with a thermal management module.
Optionally, the hydrogen supply module includes the solid metal hydrogen storage subassembly that stores hydrogen, the solid metal hydrogen storage subassembly is connected with fuel cell stack positive pole inlet through the second pipeline, fuel cell stack positive pole outlet is connected with the gas-water separator, the gas-water separator is connected third pipeline and fourth pipeline respectively, the third pipeline is connected with the second pipeline, just the flange is installed the ejector on the third pipeline, the fourth pipeline is connected with the storage water tank, the gas vent has been seted up to the storage water tank.
Optionally, a hydrogen pressure reducing valve is installed on the second pipeline upper flange, and a hydrogen discharging electromagnetic valve is installed on the fourth pipeline upper flange.
Optionally, the thermal management module includes condensation pipeline and the coolant tank of circulation setting at fuel cell stack cooling end, coolant tank's play liquid end and condensation pipeline intercommunication set up, electronic thermostat, radiator and cooling water pump have been set gradually on the condensation pipeline.
Optionally, the cathode outlet end of the fuel cell stack is connected with the water storage tank through a fifth pipeline, and a back pressure valve is arranged on the fifth pipeline through a flange.
Optionally, a liquid level sensor is arranged in the water storage tank, a water outlet is formed in the water storage tank, and a water drainage electromagnetic valve is arranged on an upper flange of the water outlet.
Optionally, the DC-DC converter is electrically connected to the FCU controller.
The beneficial effects of the utility model are as follows:
(1) The low-noise hydrogen fuel cell system adopts the blower to realize the air supply of the fuel cell stack, and compared with an air compressor, the blower has low rotating speed and small noise;
(2) The utility model adopts the solid metal hydrogen storage component, can absorb a part of heat emitted by the electric pile, reduces the power of the cooling fan in the thermal management system and reduces noise;
(3) The lithium ion super capacitor is used as an auxiliary energy source, and has small heat generation and low temperature rise under the condition of high-rate charge and discharge, and a cooling fan is not required to be independently assembled for the lithium ion super capacitor, so that noise is reduced.
Drawings
In the drawings:
fig. 1 is a schematic structural diagram of a low noise hydrogen fuel cell system for a forklift according to the present utility model.
In the figure: the system comprises a 1-lithium ion super capacitor, a 2-DC-DC converter, a 3-hydrogen fuel cell power generation module, a 4-blower, a 5-air filter, a 6-solid metal hydrogen storage component, a 7-hydrogen pressure reducing valve, an 8-ejector, a 9-fuel cell stack, a 10-cooling water pump, a 11-electronic thermostat, a 12-cooling water tank, a 13-radiator, a 14-drainage electromagnetic valve, a 15-liquid level sensor, a 16-water storage tank, a 17-hydrogen drainage electromagnetic valve, an 18-gas-water separator, a 19-back pressure valve and a 20-FCU controller.
Detailed Description
Referring to fig. 1, a forklift low-noise hydrogen fuel cell system comprises a lithium ion super capacitor 1, a DC-DC converter 2 and a hydrogen fuel cell power generation module 3, wherein the lithium ion super capacitor 1 is electrically connected with the DC-DC converter 2, the hydrogen fuel cell power generation module 3 is electrically connected with the DC-DC converter 2, the DC-DC converter 2 is electrically connected with an FCU controller, and the electrical connection comprises signal connection, electrical connection and the like;
the vehicle demand power is less than the net output power of the hydrogen fuel cell power generation system 3: when the SOC of the lithium ion super capacitor 1 is not more than 30%, the FCU controller 20 controls the hydrogen fuel cell power generation system 3 to start, the generated power supplies power to the motor through the DC-DC converter 2 and the inverter, and vehicle motion is achieved, and meanwhile, the fuel FCU controller 20 controls the generated power of the hydrogen fuel cell power generation system 3 to charge the lithium ion super capacitor 1 through the DC-DC converter 2.
The vehicle demand power is less than the net output power of the hydrogen fuel cell power generation system 3: when the SOC of the lithium ion super capacitor 1 is between 30% and 85%, the FCU controller 20 controls the hydrogen fuel cell power generation system 3 to be not operated, and the lithium ion super capacitor 1 supplies power to the motor through the inverter, so that the vehicle action is realized.
When the vehicle demand power is greater than the net output power of the hydrogen fuel cell power generation system 3: the FCU controller 20 controls the hydrogen fuel cell power generation system 3 to start, and the generated power is supplied to the motor through the inverter together with the lithium ion super capacitor 1 through the DC-DC converter 2, so that the vehicle action is realized.
The hydrogen fuel cell power generation module 3 comprises a fuel cell stack 9, the cathode of the fuel cell stack 9 is connected with an air supply module, the air supply module comprises an air filter 5, the air filter 5 is connected with the cathode inlet end of the fuel cell stack 9 through a first pipeline, a blower 4 is arranged on the first pipeline, compared with an air compressor, the rotating speed of the blower is relatively low, but the function of the air compressor can be realized, compared with the air compressor, the noise is greatly reduced, the anode end of the fuel cell stack 9 is connected with the hydrogen supply module, the hydrogen supply module is connected with a water storage tank 16, a water management module is arranged in the water storage tank 16, and the cooling end of the fuel cell stack 9 is connected with the heat management module.
In this embodiment, the hydrogen supply module includes a solid metal hydrogen storage component 6 for storing hydrogen, the solid metal hydrogen storage component 6 is connected with an anode inlet end of the fuel cell stack 9 through a second pipeline, an anode outlet end of the fuel cell stack 9 is connected with a gas-water separator 18, the gas-water separator 18 is respectively connected with a third pipeline and a fourth pipeline, the third pipeline is connected with the second pipeline, an ejector 8 is mounted on an upper flange of the third pipeline, the fourth pipeline is connected with the water storage tank 16, and the water storage tank 16 is provided with an exhaust port.
In the present embodiment, the hydrogen pressure reducing valve 7 is mounted on the second pipe upper flange, and the hydrogen discharge solenoid valve 17 is mounted on the fourth pipe upper flange.
In this embodiment, the thermal management module includes a condensation pipeline and a cooling water tank 12 circularly disposed at a cooling end of the fuel cell stack, a liquid outlet end of the cooling water tank 12 is communicated with the condensation pipeline, and an electronic thermostat 11, a radiator 13 and a cooling water pump 10 are sequentially disposed on the condensation pipeline.
In this embodiment, the cathode outlet of the fuel cell stack 9 is connected to the water storage tank 16 via a fifth pipe, and a back pressure valve 19 is flange-mounted on the fifth pipe.
In the present embodiment, a liquid level sensor 15 is provided in a water storage tank 16, a water outlet is provided in the water storage tank 16, and a water outlet solenoid valve 14 is flange-mounted on the water outlet.
The working principle of the forklift low-noise hydrogen fuel cell system in the embodiment is as follows:
and a hydrogen supply module: the hydrogen of 5Mpa is stored in the solid metal hydrogen storage component 6, when the hydrogen fuel cell system is started, the electric energy stored by the lithium ion super capacitor is used for heating and discharging hydrogen to the solid metal hydrogen storage component, in the working process of the hydrogen fuel cell system, the residual heat of the hydrogen fuel cell is used for discharging hydrogen, the hydrogen is delivered to the anode of the fuel cell stack 9 through the hydrogen pressure reducing valve 7, the hydrogen and the oxygen are subjected to electrochemical reaction under the action of a catalyst to generate electric energy, and the redundant hydrogen is divided into two paths after passing through the gas-water separator 18: the first path returns to the fuel cell stack 9 through the ejector 8 to continue the electrochemical reaction with oxygen; the second path is connected to the water storage tank 16 through the hydrogen discharge electromagnetic valve 17, and is mixed with air discharged from the fuel cell stack 9 into the water storage tank 16, and the mixed air is discharged from the exhaust port in the form of tail gas.
An air supply module: air enters the cathode of the fuel cell stack 9 through the air filter 5 and the blower 4, hydrogen and oxygen in the air perform electrochemical reaction under the action of a catalyst to generate electric energy, and redundant air is sent to the water storage tank 16 through the back pressure valve 19 to be mixed with the hydrogen which is discharged from the fuel cell stack 9 and enters the water storage tank 16, and the mixed hydrogen is discharged from the exhaust port in a tail gas mode.
And a thermal management module: part of the heat generated in the operation process of the fuel cell stack 9 is supplied to the solid metal hydrogen storage component 6 for releasing hydrogen by the metal hydrogen storage system, and the other part of the heat is dissipated through the radiator. Because the solid metal hydrogen storage component 6 can absorb a part of heat emitted by the electric pile, the power of a cooling fan in the cooling system can be reduced, and noise is reduced. Meanwhile, when the temperature of the cooling liquid is less than or equal to 80 ℃, the fan of the radiator 13 does not work; when the temperature of the cooling liquid is more than 80 ℃, the fan of the radiator 13 works.
The temperature of the cooling liquid is less than or equal to 80℃: the cooling liquid of the cooling water tank 12 passes through the fuel cell stack 9 and the electronic thermostat 11 to the cooling water pump 10 via the cooling water pump 10, and the temperature of the fuel cell stack 9 is not controlled.
The temperature of the cooling liquid is more than 80℃: the cooling liquid of the cooling water tank 12 passes through the fuel cell stack 9, the electronic thermostat 11 and the radiator 13 to the cooling water pump 10 through the cooling water pump 10, and controls the temperature of the fuel cell stack 9.
And a water management module: the water generated by the electrochemical reaction of hydrogen and oxygen in the hydrogen fuel cell power generation system 3 is discharged from the anode of the fuel cell stack 9 together with the surplus hydrogen gas, and is sent to the water storage tank 16 via the gas-water separator 18. The liquid level sensor 15 detects the liquid level of the water storage tank, when the liquid level reaches a set value, the alarm is given through the display instrument, and an operator opens the drainage electromagnetic valve 14 to drain water.
In the embodiment, the low-noise hydrogen fuel cell system adopts the blower to realize the air supply of the fuel cell stack, and the rotating speed of the blower is relatively low, but the function of the air compressor can be realized, and compared with the air compressor, the noise is greatly reduced; the solid metal hydrogen storage component is adopted, so that a part of heat emitted by the electric pile can be absorbed, the power of a cooling fan in the thermal management system is reduced, and the noise is reduced; meanwhile, the lithium ion super capacitor is used as an auxiliary energy source, and has small heating and low temperature rise under the condition of high-rate charge and discharge, and a cooling fan is not required to be independently assembled for the lithium ion super capacitor, so that noise is reduced.
Claims (7)
1. The forklift low-noise hydrogen fuel cell system is characterized by comprising a lithium ion super capacitor (1), a DC-DC converter (2) and a hydrogen fuel cell power generation module (3), wherein the lithium ion super capacitor (1) is electrically connected with the DC-DC converter (2), and the hydrogen fuel cell power generation module (3) is electrically connected with the DC-DC converter (2);
the hydrogen fuel cell power generation module (3) comprises a fuel cell stack (9), the cathode of the fuel cell stack (9) is connected with an air supply module, the air supply module comprises an air filter (5), the air filter (5) is connected with the cathode inlet end of the fuel cell stack (9) through a first pipeline, a blower (4) is arranged on the first pipeline, the anode end of the fuel cell stack (9) is connected with the hydrogen supply module, the anode outlet end of the fuel cell stack (9) is connected with a water storage tank (16), a water management module is arranged in the water storage tank (16), and the cooling end of the fuel cell stack (9) is connected with the heat management module.
2. The forklift low-noise hydrogen fuel cell system according to claim 1, wherein the hydrogen supply module comprises a solid metal hydrogen storage component (6) for storing hydrogen, the solid metal hydrogen storage component (6) is connected with an anode inlet end of a fuel cell stack (9) through a second pipeline, an anode outlet end of the fuel cell stack (9) is connected with a gas-water separator (18), the gas-water separator (18) is respectively connected with a third pipeline and a fourth pipeline, the third pipeline is connected with the second pipeline, an ejector (8) is arranged on the third pipeline in a flange mode, the fourth pipeline is connected with a water storage tank (16), and the water storage tank (16) is provided with an exhaust port.
3. A forklift low noise hydrogen fuel cell system according to claim 2, wherein the second pipe upper flange is provided with a hydrogen pressure reducing valve (7), and the fourth pipe upper flange is provided with a hydrogen discharging electromagnetic valve (17).
4. The forklift low-noise hydrogen fuel cell system according to claim 1, wherein the thermal management module comprises a condensation pipeline and a cooling water tank (12), the condensation pipeline is circularly arranged at the cooling end of the fuel cell stack, the liquid outlet end of the cooling water tank (12) is communicated with the condensation pipeline, and an electronic thermostat (11), a radiator (13) and a cooling water pump (10) are sequentially arranged on the condensation pipeline.
5. The forklift low noise hydrogen fuel cell system according to claim 1, wherein the cathode outlet of the fuel cell stack (9) is connected with a water storage tank (16) through a fifth pipeline, and a back pressure valve (19) is arranged on the fifth pipeline in a flange mode.
6. The forklift low-noise hydrogen fuel cell system according to claim 1, wherein a liquid level sensor (15) is arranged in the water storage tank (16), a water outlet is formed in the water storage tank (16), and a water discharge electromagnetic valve (14) is arranged on an upper flange of the water outlet.
7. A forklift low noise hydrogen fuel cell system according to claim 1, wherein the DC-DC converter (2) is electrically connected to an FCU controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320734973.2U CN219534567U (en) | 2023-04-06 | 2023-04-06 | Fork truck low noise hydrogen fuel cell system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320734973.2U CN219534567U (en) | 2023-04-06 | 2023-04-06 | Fork truck low noise hydrogen fuel cell system |
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| Publication Number | Publication Date |
|---|---|
| CN219534567U true CN219534567U (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320734973.2U Active CN219534567U (en) | 2023-04-06 | 2023-04-06 | Fork truck low noise hydrogen fuel cell system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219534567U (en) |
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2023
- 2023-04-06 CN CN202320734973.2U patent/CN219534567U/en active Active
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