CN217009250U

CN217009250U - Integrated active hydrogen fuel cell system

Info

Publication number: CN217009250U
Application number: CN202220904058.9U
Authority: CN
Inventors: 李飞强; 张国强; 各伟康; 王海平; 王阳
Original assignee: Beijing Sinohytec Co Ltd
Current assignee: Beijing Sinohytec Co Ltd
Priority date: 2022-04-19
Filing date: 2022-04-19
Publication date: 2022-07-19
Anticipated expiration: 2032-04-19

Abstract

The utility model provides an integrated active hydrogen fuel cell system, which comprises a cell assembly, wherein the cell assembly is connected with a non-interrupted power module, low-voltage electric equipment, external equipment and an external low-voltage power supply through leads; the battery pack comprises a BOP auxiliary component connected with the low-voltage electric equipment through a lead, a pile connected with the BOP auxiliary component and a step-down DC connected with the pile through a lead, wherein a step-up DC is arranged on a line between the pile and the BOP auxiliary component, the step-up DC, the step-down DC, the pile and the BOP auxiliary component are all connected with the uninterrupted power module through leads, the step-up DC, the step-down DC, the pile and the BOP auxiliary component are all connected with an external low-voltage power supply through leads, and the pile is connected with a humidifying mechanism. The utility model has high integration level, adopts double power supply loops, and can realize the operation of the fuel cell system without external power supply.

Description

Integrated active hydrogen fuel cell system

Technical Field

The utility model mainly relates to the technical field of fuel cells, in particular to an integrated active hydrogen fuel cell system.

Background

A fuel cell is a chemical device that directly converts chemical energy of fuel into electric energy, and is also called an electrochemical generator.

According to the integrated fuel cell engine system provided in the patent document with the application number CN202021644075.0, the fuel cell system includes a frame, a hydrogen supply system, a fuel cell engine, an air intake system, a water circulation system, an air-hydrogen exhaust system and an electrical system, the hydrogen supply system is installed on the upper portion of the frame, the fuel cell engine, the air intake system, the electrical system, a deionizer and an expansion water tank are installed in the middle portion of the frame, and the air-hydrogen exhaust system, a radiator fan assembly, an electric water pump and an electronic thermostat are installed on the bottom portion of the frame. According to the integrated fuel cell engine system, all included system components are integrally arranged on one frame structure, so that the system is conveniently integrally hoisted to a whole vehicle frame to be installed, and the fuel cell is integrally debugged and packaged for transportation; the whole integrated arrangement shortens the connecting pipelines of the water path, the hydrogen path and the air path, reduces the pressure loss of fluid in the pipelines, and further improves the fuel utilization rate and the economical efficiency of the whole system.

At present, a fuel cell system can be started only by external power supply, and after the external power supply is abnormally disconnected, the fuel cell system loses power supply, cannot execute a conventional shutdown strategy, and is easy to damage the fuel cell system.

SUMMERY OF THE UTILITY MODEL

The present invention provides an integrated active hydrogen fuel cell system to solve the above technical problems in the background art.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the integrated active hydrogen fuel cell system comprises a cell assembly, wherein the cell assembly is connected with a non-intermittent power module, low-voltage electric equipment, external equipment and an external low-voltage power supply through leads;

the battery pack comprises a BOP auxiliary component connected with the low-voltage electric equipment through a lead, a pile connected with the BOP auxiliary component and a step-down DC connected with the pile through a lead, wherein a step-up DC is arranged on a line between the pile and the BOP auxiliary component, the step-up DC, the step-down DC, the pile and the BOP auxiliary component are all connected with the uninterrupted power module through leads, the step-up DC, the step-down DC, the pile and the BOP auxiliary component are all connected with an external low-voltage power supply through leads, and the pile is connected with a humidifying mechanism.

Furthermore, the water outlet end of the galvanic pile is connected with a water outlet pipe, the air inlet end of the galvanic pile is connected with a humidifier, and the air inlet end of the humidifier is connected with an air compressor.

Furthermore, the humidifying mechanism comprises an emergency liquid storage box and a partition plate, the emergency liquid storage box is installed on one side surface of the galvanic pile, the partition plate is installed inside the emergency liquid storage box, the emergency liquid storage box is sequentially divided into a condensation cavity and a liquid storage cavity from top to bottom through the partition plate, a cooling assembly is arranged inside the condensation cavity, and atomized water vapor in the liquid storage cavity is discharged into the galvanic pile, so that the wettability of inner membranes of the galvanic pile is improved when no external power supply exists.

Furthermore, the cooling assembly comprises a plurality of first corrugated heat exchange plates and a second corrugated heat exchange plate, wherein the first corrugated heat exchange plates are arranged in the condensation cavity and are sequentially arranged from top to bottom, the second corrugated heat exchange plate is arranged between every two adjacent first corrugated heat exchange plates, and the first corrugated heat exchange plates and the second corrugated heat exchange plates are arranged in a staggered mode.

Further, the cooling module still includes snakelike condenser pipe, snakelike condenser pipe with BOP auxiliary component is connected, snakelike condenser pipe with first ripple heat transfer board, the crisscross setting of second ripple heat transfer board.

Furthermore, the bottom end of the outer surface of the water outlet pipe is provided with a shunt pipe which is positioned inside the condensation cavity.

In the utility model, the first floater floats upwards by water in the liquid storage cavity, the water blocking inserted rod floats upwards by the first floater, and the water blocking inserted rod floats upwards by the first floater.

Furthermore, the outer surface of the top end of the water plugging inserted bar is provided with a support ring, the upper surface of the support ring is provided with a spring sleeved on the water plugging inserted bar, and the top end of the spring is provided with a plug.

In the utility model, the travel switch is connected with a controller in low-voltage electric equipment, so that the controller receives an electric signal related to water level information in the liquid storage cavity.

Further, an air inlet pipe is mounted on the shell of the liquid storage cavity, one end, far away from the liquid storage cavity, of the air inlet pipe is connected with a first three-way pipe, and the first three-way pipe is arranged on a pipeline for connecting the air compressor and the humidifier;

the inside of stock solution chamber is installed the atomizing piece, the play water end of atomizing piece is connected with the outlet duct, the one end that the liquid storage chamber was kept away from to the outlet duct is connected with the second three-way pipe, the second three-way pipe is located on the pipeline that humidifier and pile are connected.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model has high integration level, adopts double power supply loops, can realize the operation of the fuel cell system without external power supply, and can still execute the conventional shutdown strategy if the abnormal disconnection of the external power supply is avoided; in harsh environments, fuel cells may implement system protection strategies depending on the circumstances.

The present invention will be explained in detail below with reference to the drawings and specific embodiments.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic diagram of the construction of a cell stack and humidification mechanism of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is an enlarged view of the structure of area A in FIG. 4;

FIG. 6 is a schematic structural view of the water blocking inserted link of the present invention;

FIG. 7 is an exploded view of the emergency reservoir of the present invention;

fig. 8 is a schematic structural diagram of the emergency liquid storage tank of the present invention.

In the figure: 10. a battery assembly; 11. a BOP auxiliary component; 12. a galvanic pile; 121. a water outlet pipe; 122. a humidifier; 123. an air compressor; 13. reducing the voltage of the DC; 14. boosting the DC; 15. a humidifying mechanism; 151. an emergency liquid storage tank; 152. a partition plate; 153. a condensation chamber; 154. a liquid storage cavity; 1541. an air inlet pipe; 1542. a first three-way pipe; 1543. an air outlet pipe; 1544. a second three-way pipe; 1545. an atomizing sheet; 155. a cooling assembly; 1551. a first corrugated heat exchange plate; 1552. a second corrugated heat exchange plate; 1553. a serpentine condenser tube; 156. a first float; 157. plugging a water plugging inserted rod; 1571. a support ring; 1572. a spring; 1573. a plug; 158. a second float; 159. a travel switch; 20. a non-interruptive power module; 30. low-voltage electric equipment; 40. an external low voltage power supply; 50. and (4) external equipment.

Detailed Description

In order to facilitate an understanding of the utility model, the utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the utility model are shown, but which may be embodied in different forms and not limited to the embodiments described herein, but which are provided so as to provide a more thorough and complete disclosure of the utility model.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the use of such term knowledge in the specification of the utility model is for the purpose of describing particular embodiments and is not intended to be limiting of the utility model, and the use of the term "and/or" herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-8, an integrated active hydrogen fuel cell system includes a cell assembly 10, wherein the cell assembly 10 is connected to an uninterruptible power supply module 20, a low-voltage electric device 30, an external device 50, and an external low-voltage power supply 40 through wires;

the battery pack 10 comprises a BOP auxiliary part 11 connected with the low-voltage electric equipment 30 through a lead, a galvanic pile 12 connected with the BOP auxiliary part 11, and a step-down DC13 connected with the galvanic pile 12 through a lead, wherein a step-up DC14 is arranged on a line between the galvanic pile 12 and the BOP auxiliary part 11, the step-up DC14, the step-down DC13, the galvanic pile 12, and the BOP auxiliary part 11 are all connected with the uninterruptible power supply module 20 through leads, the step-up DC14, the step-down DC13, the galvanic pile 12, and the BOP auxiliary part 11 are all connected with the external low-voltage power supply 40 through leads, and the galvanic pile 12 is connected with a humidification mechanism 15;

it should be noted that, in this embodiment, the boost DC14 is used to boost the power generated by the stack module, the buck DC13 is used to convert the high voltage into the voltage required by the low-voltage device of the system, and to supply power to the low-voltage device, and the low-voltage device 30 includes various sensors and a fuel cell system controller, which are used to monitor the state of the fuel cell system and control the operation of the fuel cell system.

Specifically, please refer to fig. 2, 3 and 4 again, a water outlet end of the electric pile 12 is connected to a water outlet pipe 121, an air inlet end of the electric pile 12 is connected to a humidifier 122, and an air inlet end of the humidifier 122 is connected to an air compressor 123;

the humidifying mechanism 15 comprises an emergency liquid storage tank 151 arranged on one side surface of the galvanic pile 12 and a partition plate 152 arranged in the emergency liquid storage tank 151, the emergency liquid storage tank 151 is internally divided into a condensation cavity 153 and a liquid storage cavity 154 from top to bottom in sequence through the partition plate 152, and a cooling component 155 is arranged in the condensation cavity 153;

in the present embodiment, air is supplied to the humidifier 122 through the air compressor 123, the air is humidified through the humidifier 122, and the humidified air enters the electric stack 12 to improve the wettability of the membrane in the electric stack 12;

further, the galvanic pile 12 is drained through the water outlet pipe 121, the drained water is cooled through elements in the condensation cavity 153, the cooled water enters the liquid storage cavity 154 through a through hole in the partition plate 152 to be temporarily stored, so that when no external power supply exists in the external equipment 50, the valve body on the air outlet pipe 1543 is powered through the uninterruptible power supply module 20, the valve body on the air outlet pipe 1543 is opened, atomized water vapor in the liquid storage cavity 154 is drained, and the wettability of the inner film of the galvanic pile 12 is improved when no external power supply exists.

Specifically, please refer to fig. 4 and 7 again, the cooling assembly 155 includes a plurality of first corrugated heat exchange plates 1551 installed inside the condensation chamber 153 and sequentially arranged from top to bottom, and second corrugated heat exchange plates 1552 arranged between two adjacent first corrugated heat exchange plates 1551, wherein the first corrugated heat exchange plates 1551 and the second corrugated heat exchange plates 1552 are arranged in a staggered manner;

the cooling assembly 155 further comprises a coiled condenser pipe 1553, the coiled condenser pipe 1553 is connected with the BOP auxiliary part 11, and the coiled condenser pipe 1553 is staggered with the first corrugated heat exchange plate 1551 and the second corrugated heat exchange plate 1552;

a shunt pipe 124 is installed at the bottom end of the outer surface of the water outlet pipe 121, and the shunt pipe 124 is located inside the condensation cavity 153;

it should be noted that, in this embodiment, water discharged from the water outlet pipe 121 is guided to contact the first corrugated heat exchange plate 1551 and the second corrugated heat exchange plate 1552 by the inclined first corrugated heat exchange plate 1551 and the inclined second corrugated heat exchange plate 1552, so that heat exchange is performed between the water discharged from the water outlet pipe 121 and the water discharged from the water outlet pipe 1551 and the water discharged from the water outlet pipe 1552, and the water discharged from the water outlet pipe 121 is cooled;

furthermore, two ends of the serpentine condenser tube 1553 are connected with a liquid inlet end and a liquid outlet end of cooling liquid control equipment in the BOP auxiliary component 11 through hoses, so that liquid flowing and circulating in the serpentine condenser tube 1553 continuously exchanges heat with water discharged from the water outlet pipe 121 in the condensation cavity 153, and the serpentine condenser tube 1553 exchanges heat with steam of the water discharged from the water outlet pipe 121, so that the cooled steam is condensed into water and falls down, and the serpentine condenser tube 1553 is in contact with the first corrugated heat exchange plate 1551 and the second corrugated heat exchange plate 1552, so that the first corrugated heat exchange plate 1551 and the second corrugated heat exchange plate 1552 also have heat exchange capacity;

the BOP auxiliary components 11 include a fuel supply device, an air supply device, a coolant control device, and a PTC device;

further, the water flowing through the water outlet pipe 121 is branched by the branch pipe 124, so that a part of the water flowing through the water outlet pipe 121 can enter the condensation chamber 153.

Specifically, please refer to fig. 4 and 6 again, the humidifying mechanism 15 further includes a first float 156 installed at the bottom end inside the liquid storage chamber 154, and a water blocking insertion rod 157 for blocking the shunt pipe 124 is installed at the top end of the first float 156;

a support ring 1571 is installed on the outer surface of the top end of the water plugging insertion rod 157, a spring 1572 sleeved on the water plugging insertion rod 157 is installed on the upper surface of the support ring 1571, and a plug 1573 is installed on the top end of the spring 1572;

the humidifying mechanism 15 further comprises a second float 158 arranged inside the liquid storage cavity 154, and a travel switch 159 arranged on the lower surface of the partition plate 152 is arranged at the top end of the second float 158;

a gas inlet pipe 1541 is installed on the housing of the liquid storage cavity 154, one end of the gas inlet pipe 1541, which is far away from the liquid storage cavity 154, is connected with a first three-way pipe 1542, and the first three-way pipe 1542 is arranged on a pipeline, which is connected with the humidifier 122, of the air compressor 123;

an atomizing sheet 1545 is installed inside the liquid storage cavity 154, a water outlet end of the atomizing sheet 1545 is connected with a gas outlet pipe 1543, one end of the gas outlet pipe 1543, which is far away from the liquid storage cavity 154, is connected with a second three-way pipe 1544, and the second three-way pipe 1544 is arranged on a pipeline connecting the humidifier 122 and the galvanic pile 12;

it should be noted that, in this embodiment, the first floater 156 is driven to float upward by the water in the liquid storage cavity 154, the water blocking insertion rod 157 is driven to float upward by the first floater 156, and the water blocking insertion rod 157 is driven to float upward by the first floater 156;

further, the floating water blocking insertion rod 157 floats upwards to drive the plug 1573 to float upwards, so that more water is in the liquid storage cavity 154, the shunt pipe 124 is blocked by the plug 1573 to stop water inflow, the support ring 1571 provides support for the spring 1572, and the spring 1572 assists in pushing the plug 1573 to rise;

further, the second floater 158 is driven to float upwards by the water in the liquid storage cavity 154 so as to touch the travel switch 159 through the second floater 158, and the travel switch 159 is connected with a controller in the low-voltage electric equipment 30 so that the controller receives an electric signal related to the water level information in the liquid storage cavity 154;

further, the gas that air compressor 123 flows out shunts through first tee bend 1542 to make partly gaseous entering stock solution chamber 154 in, so that the water through atomizing flows out in stock solution chamber 154, sets up high-pressure release valve on stock solution chamber 154, and the end of giving vent to anger of high-pressure release valve sets up the hose that is connected with humidifier 122 inlet end. So that gas exceeding the high pressure relief valve threshold enters the humidifier 122 via the hose and prevents the liquid storage chamber 154 from being damaged by excessive air pressure inside the liquid storage chamber 154

The water mist atomized by the atomizing sheet 1545 in the liquid storage cavity 154 enters the air outlet pipe 1543, and the water mist in the air outlet pipe 1543 flows through the second three-way pipe 1544 to enter a pipeline connecting the humidifier 122 and the galvanic pile 12, and enters the galvanic pile 12 through the pipeline.

The specific operation mode of the utility model is as follows:

the external power supply in the uninterruptible power supply module 20 or the external device 50 supplies power to the fuel cell system, the step-down DC13 works or the external low-voltage power supply 40 supplies power, the controller in the low-voltage electric equipment 30 receives the power-on instruction and controls the BOP auxiliary part 11 to start operation, the pile 12 starts generating power, the uninterruptible power supply is charged through the step-up DC14 to supply power to the step-down DC13, the BOP auxiliary part 11 and the external device 50, the operation of the fuel cell system is completed, and similar logic is executed during shutdown;

when there is no external power supply in the external device 50, or when the external device is turned on or off, or the external power supply in the external device 50 is suddenly lost, only the power module 20 is powered on or off at this time, and the same logic is performed when there is an external power supply in the external device 50;

without an external power source in the external device 50; under severe environment, the uninterrupted power supply module 20 supplies power, the step-down DC13, the BOP auxiliary component 11 and the low-voltage electric equipment 30 work, and the controller of the low-voltage electric equipment 30 executes a protection strategy of the fuel cell, such as accumulated water purging, in real time according to detected data.

The utility model is described above with reference to the accompanying drawings, it is obvious that the utility model is not limited to the above-described embodiments, and it is within the scope of the utility model to adopt such insubstantial modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.

Claims

1. The integrated active hydrogen fuel cell system is characterized by comprising a cell assembly (10), wherein the cell assembly (10) is connected with an uninterrupted power module (20), low-voltage electric equipment (30), external equipment (50) and an external low-voltage power supply (40) through leads;

the battery pack (10) comprises a BOP auxiliary component (11) connected with the low-voltage electric equipment (30) through a lead, a galvanic pile (12) connected with the BOP auxiliary component (11), and a voltage reduction DC (13) connected with the galvanic pile (12) through a lead, wherein a voltage boosting DC (14) is arranged on a line between the galvanic pile (12) and the BOP auxiliary component (11), the voltage boosting DC (14), the voltage reduction DC (13), the galvanic pile (12) and the BOP auxiliary component (11) are connected with the uninterrupted power supply module (20) through leads, the voltage boosting DC (14), the voltage reduction DC (13), the galvanic pile (12) and the BOP auxiliary component (11) are connected with the external low-voltage power supply (40) through leads, and the galvanic pile (12) is connected with a humidifying mechanism (15).

2. The integrated active hydrogen fuel cell system according to claim 1, wherein the water outlet end of the electric pile (12) is connected with a water outlet pipe (121), the air inlet end of the electric pile (12) is connected with a humidifier (122), and the air inlet end of the humidifier (122) is connected with an air compressor (123).

3. The integrated active hydrogen fuel cell system according to claim 2, wherein the humidification mechanism (15) comprises an emergency tank (151) installed on one side surface of the stack (12), and a partition plate (152) installed inside the emergency tank (151), the interior of the emergency tank (151) is sequentially partitioned into a condensation chamber (153) and a liquid storage chamber (154) from top to bottom by the partition plate (152), and a cooling assembly (155) is disposed inside the condensation chamber (153).

4. The integrated active hydrogen fuel cell system according to claim 3, wherein the cooling assembly (155) comprises a plurality of first corrugated heat exchange plates (1551) installed inside the condensation chamber (153) and sequentially arranged from top to bottom, and second corrugated heat exchange plates (1552) arranged between two adjacent first corrugated heat exchange plates (1551), and the first corrugated heat exchange plates (1551) and the second corrugated heat exchange plates (1552) are arranged in a staggered manner.

5. The integrated active hydrogen fuel cell system according to claim 4, wherein the cooling assembly (155) further comprises a serpentine condenser tube (1553), the serpentine condenser tube (1553) is connected to the BOP auxiliary unit (11), and the serpentine condenser tube (1553) is staggered with the first and second corrugated heat exchange plates (1551, 1552).

6. The integrated active hydrogen fuel cell system according to claim 5, wherein a shunt pipe (124) is installed at the bottom end of the outer surface of the outlet pipe (121), and the shunt pipe (124) is located inside the condensation chamber (153).

7. The integrated active hydrogen fuel cell system according to claim 6, wherein the humidification mechanism (15) further comprises a first float (156) mounted at the bottom end inside the reservoir chamber (154), and a water shutoff insertion rod (157) for shutting off the shunt tube (124) is mounted at the top end of the first float (156).

8. The integrated active hydrogen fuel cell system of claim 7, wherein a support ring (1571) is mounted on the outer surface of the top end of the water shutoff inserted bar (157), a spring (1572) sleeved on the water shutoff inserted bar (157) is mounted on the upper surface of the support ring (1571), and a plug (1573) is mounted on the top end of the spring (1572).

9. The integrated active hydrogen fuel cell system according to claim 8, wherein the humidification mechanism (15) further comprises a second float (158) installed inside the reservoir chamber (154), and a top end of the second float (158) is provided with a stroke switch (159) installed on a lower surface of the partition plate (152).

10. The integrated active hydrogen fuel cell system according to claim 9, wherein a gas inlet pipe (1541) is installed on the housing of the liquid storage cavity (154), a first tee pipe (1542) is connected to an end of the gas inlet pipe (1541) away from the liquid storage cavity (154), and the first tee pipe (1542) is arranged on a pipeline connecting the air compressor (123) and the humidifier (122);

the inside of stock solution chamber (154) is installed atomizing piece (1545), the play water end of atomizing piece (1545) is connected with outlet duct (1543), the one end that the stock solution chamber (154) is kept away from in outlet duct (1543) is connected with second three-way pipe (1544), second three-way pipe (1544) are located the pipeline that humidifier (122) and galvanic pile (12) are connected is on the way.