CN220016234U - Valve block assembly, electric pile module and fuel cell system - Google Patents

Abstract

The utility model provides a valve block assembly, a galvanic pile module and a fuel cell system, and relates to the technical field of fuel cells. The valve block assembly includes a valve block body and a sensor; the valve block body is provided with a cavity, and the side wall of the cavity is provided with a first channel, a second channel, a third channel and a fourth channel; the sensor is arranged in the fourth channel, and the detection end extends into the cavity to detect the hydrogen concentration in the cavity; the first channel is configured to be in fluid communication with the vehicle exhaust pipe, and internally provided with a one-way valve which is in signal connection with the sensor; the second channel is configured to be in fluid communication with an air outlet of the stack housing and the third channel is configured to be in fluid communication with the tail stack. The valve block assembly solves the technical problem that potential safety hazards exist in a galvanic pile module in the prior art.

Description

Valve block assembly, electric pile module and fuel cell system

Technical Field

The present utility model relates to the field of fuel cell technologies, and in particular, to a valve block assembly, a stack module, and a fuel cell system.

Background

The fuel cell system comprises a pile module, wherein the pile module is provided with an air inlet and an air outlet, air or inert gas flows into the pile module through the air inlet and is discharged through the air outlet, so that hydrogen and moisture leaked in the pile module are blown out, and the safety problem caused by accumulation of the hydrogen in the pile module is prevented.

In the existing pile module, an air outlet is directly communicated with a tail calandria through a purging outlet pipe, and purging is carried out on the inside of the pile module through air or inert gas with a constant curve according to different working conditions. Under the same working condition, the flow of air or inert gas entering the inside of the pile module accords with the same constant curve, if the leakage amount in the pile module is abnormally increased, the hydrogen concentration in the pile module is high, and the structure that the air outlet is directly connected with the tail calandria cannot monitor the hydrogen concentration in the pile module, so that potential safety hazards exist.

Disclosure of Invention

The utility model aims to provide a valve block assembly, a galvanic pile module and a fuel cell system so as to solve the technical problem that the galvanic pile module in the prior art has potential safety hazards.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows:

in a first aspect, the utility model provides a valve block assembly comprising a valve block body and a sensor;

the valve block body is provided with a cavity, and the side wall of the cavity is provided with a first channel, a second channel, a third channel and a fourth channel;

the sensor is arranged in the fourth channel, and the detection end extends into the cavity to detect the concentration of hydrogen in the cavity;

the first channel is configured to be in fluid communication with the whole vehicle exhaust pipe, and internally provided with a one-way valve which is in signal connection with the sensor;

the second channel is configured to be in fluid communication with an air outlet of the stack housing and the third channel is configured to be in fluid communication with a tail stack.

Further, a sealing ring is clamped between the sensor and the inner wall of the fourth channel.

Still further, the sensor is detachably connected to the valve block body.

Still further, the valve block assembly further includes a first joint, a second joint, and a third joint;

the first joint, the second joint and the third joint are all installed in the valve block body, the first joint is communicated with the first channel, the second joint is communicated with the second channel, and the third joint is communicated with the third channel.

Further, the first channel, the second channel, the third channel and the fourth channel are respectively arranged on different side walls of the chamber.

In a second aspect, the present utility model provides a galvanic pile module comprising a galvanic pile housing and a valve block assembly according to any one of the preceding claims;

the pile shell is provided with an air inlet and an air outlet, and a second channel in the valve block assembly is communicated with the air outlet.

Still further, the galvanic pile module comprises a first conduit, a second conduit, and a third conduit;

one end of the first pipeline is communicated with a first channel in the valve block assembly, and the other end of the first pipeline is communicated with an exhaust pipe of the whole vehicle;

two ends of the second pipeline are respectively communicated with the air outlet and the second channel;

one end of the third pipeline is communicated with the third pipeline in the valve block assembly, and the other end of the third pipeline is communicated with the tail drain pipe.

Still further, the length of the first conduit is less than the length of the third conduit.

Still further, the cell stack module further includes a cell mounted inside the cell stack housing.

In a third aspect, the present utility model provides a fuel cell system comprising a tail stack, a whole vehicle exhaust, and a stack module as described in any one of the above;

a first passage in the valve block assembly is in fluid communication with the vehicle exhaust pipe and a third passage is in fluid communication with the tail pipe.

In summary, the technical effects achieved by the utility model are analyzed as follows:

the valve block assembly provided by the utility model comprises a valve block body and a sensor; the valve block body is provided with a cavity, and the side wall of the cavity is provided with a first channel, a second channel, a third channel and a fourth channel; the sensor is arranged in the fourth channel, and the detection end extends into the cavity to detect the hydrogen concentration in the cavity; the first channel is configured to be in fluid communication with the vehicle exhaust pipe, and internally provided with a one-way valve which is in signal connection with the sensor; the second channel is configured to be in fluid communication with an air outlet of the stack housing and the third channel is configured to be in fluid communication with the tail stack.

The valve body assembly is applied to a pile module of the fuel cell system, and the second channel of the valve block body is in fluid communication with an air outlet of the pile shell; purge gas enters the pile housing from an air inlet of the pile housing of the pile module, and is discharged into a cavity of the valve block body from an air outlet of the pile housing so as to purge hydrogen leaked from the pile housing. The detection end of the sensor stretches into the cavity of the valve block body to detect the hydrogen concentration in the cavity; because the second channel of the valve block body is in fluid communication with the air outlet of the galvanic pile shell, the hydrogen concentration in the cavity is equal to the hydrogen concentration in the galvanic pile shell, and the hydrogen concentration in the galvanic pile shell can be detected by detecting the hydrogen concentration in the cavity through the sensor. The third channel of the valve block body is in fluid communication with the tail gauntlet, and when the sensor detects that the hydrogen concentration in the galvanic pile shell is in a normal range, the purge gas is discharged into the tail gauntlet from the third channel. The first channel of valve piece body and whole car blast pipe fluid communication, and first channel internally mounted has the check valve, when the sensor detects the hydrogen concentration in the pile casing and surpasss normal scope, transmits this information to the check valve, and the check valve is opened, and purge gas partly is arranged in the whole car blast pipe from first channel, and another part still is arranged in the tail calandria from the third channel for purge gas's discharge rate, avoid the too big problem of hydrogen concentration in the pile casing.

The sensor is arranged in a fourth channel of the valve block body to monitor the hydrogen concentration in the galvanic pile shell; the first channel of valve piece body communicates with whole car blast pipe, and internally mounted has the check valve, realizes the quick exhaust of unusual condition, avoids the safety problem that hydrogen concentration exceeds standard and bring in the galvanic pile casing.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a valve block body in a valve block assembly according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of an internal structure of a valve block assembly according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a valve block assembly according to an embodiment of the present utility model;

fig. 4 is a schematic diagram of a valve block assembly according to an embodiment of the present utility model mounted to a stack housing.

Icon:

100-valve block body; 110-chamber; 120-sealing rings; 210-a first joint; 220-a second linker; 230-third linker; 300-sensor; 410-a first pipe; 420-a second pipe; 430-a third conduit; 500-galvanic pile housings;

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

Example 1

The valve block assembly provided by the embodiment of the utility model comprises a valve block body 100 and a sensor 300; the valve block body 100 is provided with a chamber 110, and a first channel, a second channel, a third channel and a fourth channel are arranged on the side wall of the chamber 110; the sensor 300 is installed in the fourth channel, and the detecting end extends into the chamber 110 to detect the hydrogen concentration in the chamber 110; the first channel is configured to be in fluid communication with the vehicle exhaust pipe, and internally provided with a one-way valve in signal connection with the sensor 300; the second channel is configured to be in fluid communication with an air outlet of the stack housing 500 and the third channel is configured to be in fluid communication with a tail stack.

The valve body assembly is applied to a stack module of the fuel cell system, and the second channel of the valve block body 100 is in fluid communication with the air outlet of the stack housing 500; purge gas enters the stack housing 500 from the air inlet of the stack housing 500 of the stack module, and is discharged from the air outlet of the stack housing 500 into the chamber 110 of the valve block body 100 to purge the hydrogen leaked from the stack housing 500. The detection end of the sensor 300 extends into the chamber 110 of the valve block body 100 to detect the hydrogen concentration in the chamber 110; because the second channel of the valve block body 100 is in fluid communication with the air outlet of the stack housing 500, the hydrogen concentration in the chamber 110 is equal to the hydrogen concentration in the stack housing 500, and the hydrogen concentration in the stack housing 500 can be detected by detecting the hydrogen concentration in the chamber 110 through the sensor 300. The third passage of the valve block body 100 is in fluid communication with the tail stack, and purge gas is discharged from the third passage into the tail stack when the sensor 300 detects that the hydrogen concentration within the stack housing 500 is within a normal range. The first channel of valve piece body 100 is in fluid communication with the whole car blast pipe, and first channel internally mounted has the check valve, when sensor 300 detects the hydrogen concentration in the electric pile casing 500 and surpasses normal scope, transmits this information to the check valve, and the check valve is opened, and purge gas partly is discharged to the whole car blast pipe from first channel, and another part still is discharged to the tail in the calandria from the third channel for purge gas's discharge rate, avoid the too big problem of hydrogen concentration in the electric pile casing 500.

The sensor 300 is installed in the fourth channel of the valve block body 100 to realize monitoring of the hydrogen concentration in the galvanic pile housing 500; the first channel of the valve block body 100 is communicated with the whole vehicle exhaust pipe, and the check valve is arranged in the first channel, so that the abnormal condition of the fast exhaust is realized, and the safety problem caused by exceeding of the hydrogen concentration in the electric pile shell 500 is avoided.

The structure and shape of the valve block assembly are described in detail below:

in an alternative embodiment of the present utility model, the galvanic pile module includes a control system, and the sensor 300 is in signal connection with the check valve through the control system.

Specifically, in the present embodiment, when the sensor 300 detects that the concentration of hydrogen in the stack housing 500 exceeds the normal range, the information is transmitted to the control system, and the control system increases the flow rate and pressure of the purge gas entering the stack housing 500, so that the pressure in the chamber 110 increases; when the pressure in the chamber 110 reaches the opening pressure of the check valve, the check valve is opened, the first channel is opened, and the purge gas can be discharged from the first channel to the exhaust pipe of the whole vehicle.

By increasing the flow and pressure of the purge gas in the chamber 110 to open the check valve, the purge gas is conveyed by opening the check valve, the hydrogen concentration is reduced, and the safety problem caused by exceeding the hydrogen concentration is avoided.

In an alternative embodiment of the present utility model, referring to fig. 2, a sealing ring 120 is sandwiched between the sensor 300 and the inner wall of the fourth channel.

Specifically, in the present embodiment, the sensor 300 is provided as a hydrogen concentration sensor, and the seal ring 120 is provided as an O-ring, which is simple in structure and convenient to install.

The sealing ring 120 plays a role in sealing the sensor 300 from the inner wall of the fourth channel, so that the purge gas in the valve block body 100 is prevented from leaking, and the detection precision of the sensor 300 is ensured.

In an alternative embodiment of the present utility model, the inner wall of the fourth channel and/or the sensor 300 is provided with a mounting groove, and the sealing ring 120 is mounted in the mounting groove.

Specifically, the inner wall of the fourth channel is provided with a mounting groove; alternatively, the outer wall of the sensor 300 is provided with a mounting groove; alternatively, the inner wall of the fourth channel and the outer wall of the sensor 300 are provided with mounting grooves, and the sealing rings 120 are mounted in both mounting grooves. In this embodiment, referring to fig. 2, an installation groove is formed on an inner wall of the fourth channel.

The sealing ring 120 is installed in the installation groove, so that the installation accuracy and the installation stability of the sealing ring 120 are improved.

In an alternative embodiment of the present utility model, the sensor 300 is detachably connected to the valve block body 100.

Specifically, referring to fig. 3, a screw is coupled to the valve block body 100 through the sensor 300; alternatively, the bolts are connected to the nuts through the sensor 300 and the valve block body 100 in sequence.

The sensor 300 is detachably connected with the valve block body 100, so that the sensor 300 can be conveniently installed or detached.

In an alternative aspect of the present embodiment, the valve block assembly further includes a first joint 210, a second joint 220, and a third joint 230; the first joint 210, the second joint 220 and the third joint 230 are all installed to the valve block body 100, and the first joint 210 communicates with the first passage, the second joint 220 communicates with the second passage, and the third joint 230 communicates with the third passage.

Specifically, the first joint 210, the second joint 220, and the third joint 230 are each provided in a ring shape in cross section. Preferably, when the first, second and third joints 210, 220 and 230 are connected to the corresponding pipes, the connection is sealed by the sealing member to prevent the purge gas in the chamber 110 from leaking.

The first, second and third joints 210, 220 and 230 facilitate connection of the first, second and third channels with corresponding pipes.

In an alternative embodiment of the present utility model, referring to fig. 1 and 4, the first channel, the second channel, the third channel and the fourth channel are respectively disposed on different sidewalls of the chamber 110.

Specifically, the cross sections of the first channel, the second channel, the third channel and the fourth channel are all arranged in a circular shape. Further, in the present embodiment, the fourth channel and the third channel are respectively disposed on two opposite sidewalls of the chamber 110.

The first channel, the second channel, the third channel and the fourth channel are respectively arranged on different side walls of the chamber 110, so that each pipeline can be conveniently connected with the corresponding channel of the valve block body 100, and the interference problem between the pipelines is avoided.

Example two

The pile module provided by the embodiment of the utility model comprises the valve block assembly described in the first embodiment, so that all the beneficial effects of the first embodiment are also achieved, and the details are not repeated here.

In an alternative of the embodiment of the present utility model, the pile module further includes a pile housing 500, where the pile housing 500 is provided with an air inlet and an air outlet, and the second channel in the valve block assembly is communicated with the air outlet.

Specifically, the valve block assembly is mounted to the outer wall of the stack housing 500, and the stack housing 500 supports the valve block assembly. Preferably, referring to fig. 4, a screw is coupled to the outer wall of the stack housing 500 through the valve block body 100. Still further, the stack module also includes a control system in signal communication with the sensor 300 and configured to control the flow and pressure of the purge gas.

Purge gas enters the stack housing 500 from the air inlet and is exhausted from the air outlet into the chamber 110 of the valve block assembly to purge the hydrogen leaking from the stack housing 500. When the sensor 300 detects that the hydrogen concentration in the stack housing 500 falls within the normal range, the purge gas is discharged from the third passage into the tail stack. When the sensor 300 detects that the hydrogen concentration within the stack housing 500 exceeds the normal range, this information is transmitted to the control system, which increases the flow rate and pressure of the purge gas entering the stack housing 500, causing the pressure within the chamber 110 to increase; when the pressure in the chamber 110 reaches the opening pressure of the check valve, the check valve is opened, the first channel is opened, a part of the purge gas is discharged from the first channel into the whole vehicle exhaust pipe, and the other part of the purge gas is still discharged from the third channel into the tail exhaust pipe, so that the discharge speed of the purge gas is accelerated, and the problem of overlarge hydrogen concentration in the galvanic pile shell 500 is avoided.

In an alternative of the embodiment of the present utility model, the galvanic pile module includes a first pipe 410, a second pipe 420, and a third pipe 430; one end of the first pipeline 410 is communicated with a first channel in the valve block assembly, and the other end of the first pipeline is communicated with an exhaust pipe of the whole vehicle; two ends of the second pipe 420 are respectively communicated with the air outlet and the second channel; one end of the third conduit 430 communicates with a third passage in the valve block assembly and the other end is adapted to communicate with a tail drain.

Specifically, one end of the first pipe 410 is connected to the first joint 210, and the other end is connected to the vehicle exhaust pipe; one end of the second pipe 420 is connected with the air outlet, and the other end is connected with the second joint 220; one end of the third pipe 430 is connected to the third joint 230, and the other end is connected to the tail gauntlet.

The first, second and third pipes 410, 420 and 430 realize the connection of the channels of the valve block body 100 with the corresponding parts.

In an alternative embodiment of the present utility model, the length of the first conduit 410 is less than the length of the third conduit 430.

Specifically, the first conduit 410 is connected to a relatively high point of the whole vehicle, and the overall length of the conduit is shorter than that of the tail gas system, and can be directly communicated to the atmosphere outside the vehicle, so that the purge gas can be rapidly exhausted.

In an alternative embodiment of the present utility model, the stack module further includes a battery cell, and the battery cell is installed inside the stack housing 500.

The electric core is installed in the electric pile shell 500, and the electric pile shell 500 plays a role in supporting and fixing the electric core.

Example III

The fuel cell system provided in the embodiment of the present utility model includes the stack module in the second embodiment, so that all the beneficial effects in the second embodiment are also provided, and no further description is given here.

In an alternative aspect of an embodiment of the utility model, the fuel cell system includes a tail stack and a vehicle stack, the first passage in the valve block assembly is in fluid communication with the vehicle stack, and the third passage is in fluid communication with the tail stack.

In particular, tail pipes are used to collect exhaust gases from various components in a fuel cell system and to concentrate the emissions.

The tail pipe realizes the centralized treatment and emission of tail gas of the fuel cell system; the whole vehicle exhaust pipe realizes the rapid emission of the purge gas.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. A valve block assembly, comprising: a valve block body (100) and a sensor (300);

the valve block body (100) is provided with a cavity (110), and a first channel, a second channel, a third channel and a fourth channel are arranged on the side wall of the cavity (110);

the sensor (300) is arranged in the fourth channel, and a detection end extends into the chamber (110) to detect the concentration of hydrogen in the chamber (110);

the first channel is configured to be in fluid communication with a vehicle exhaust pipe, and internally provided with a one-way valve which is in signal connection with the sensor (300);

the second channel is configured to be in fluid communication with an air outlet of a stack housing (500), and the third channel is configured to be in fluid communication with a tail stack.

2. The valve block assembly of claim 1, wherein a sealing ring (120) is sandwiched between the sensor (300) and an inner wall of the fourth channel.

3. The valve block assembly of claim 1, wherein the sensor (300) is detachably connected to the valve block body (100).

4. The valve block assembly of claim 1, further comprising a first joint (210), a second joint (220), and a third joint (230);

the first joint (210), the second joint (220) and the third joint (230) are all installed in the valve block body (100), the first joint (210) is communicated with the first channel, the second joint (220) is communicated with the second channel, and the third joint (230) is communicated with the third channel.

5. The valve block assembly of any of claims 1-4, wherein the first, second, third, and fourth channels are each provided on different sidewalls of the chamber (110).

6. A galvanic pile module comprising a galvanic pile housing (500) and a valve block assembly according to any one of claims 1-5;

the pile shell (500) is provided with an air inlet and an air outlet, and a second channel in the valve block assembly is communicated with the air outlet.

7. The galvanic pile module according to claim 6, characterized in that the galvanic pile module comprises a first duct (410), a second duct (420) and a third duct (430);

one end of the first pipeline (410) is communicated with a first channel in the valve block assembly, and the other end of the first pipeline is communicated with an exhaust pipe of the whole vehicle;

two ends of the second pipeline (420) are respectively communicated with the air outlet and the second channel;

one end of the third pipeline (430) is communicated with a third channel in the valve block assembly, and the other end of the third pipeline is used for being communicated with a tail drain pipe.

8. The galvanic pile module according to claim 7, characterized in that the length of the first duct (410) is smaller than the length of the third duct (430).

9. The cell stack module of claim 6, further comprising a cell mounted inside the cell stack housing (500).

10. A fuel cell system comprising a tail stack, a whole vehicle stack, and a stack module according to any one of claims 6-9;

a first passage in the valve block assembly is in fluid communication with the vehicle exhaust pipe and a third passage is in fluid communication with the tail pipe.