CN115064724B

CN115064724B - Detection system and car

Info

Publication number: CN115064724B
Application number: CN202210990371.3A
Authority: CN
Inventors: 李建; 彭太坤
Original assignee: Shenzhen Wanlian Xinneng Technology Co ltd
Current assignee: Shenzhen Wanlian Xinneng Technology Co ltd
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2022-12-06
Anticipated expiration: 2042-08-18
Also published as: CN115064724A

Abstract

The invention discloses a detection system and an automobile, and relates to the technical field of fuel cells. Wherein, the polar plate group includes: the long-distance electrode comprises at least one first electrode plate and at least one second electrode plate, wherein the at least one first electrode plate and the at least one second electrode plate are sequentially and alternately stacked, the first electrode plate comprises a first connector, the second electrode plate comprises a second connector, and the length directions of the first electrode plate and the second electrode plate are perpendicular to the stacking direction of the electrode plate groups; the first connector and the second connector are located on the same side of the electrode plate group, and the first connector and the second connector are spaced in the length direction, so that the first connector and the first connector are respectively used for being connected with different battery voltage acquisition devices. The technical scheme of the invention enables the CVP to carry out full pin inspection on the fuel cell stack by 100%.

Description

Detection system and car

Technical Field

The invention relates to the technical field of fuel cells, in particular to a detection system and an automobile.

Background

The fuel cell, especially the hydrogen fuel cell, is mainly used in the fields of fuel cell powered vehicles, passenger cars, trucks of new energy vehicles, new energy fuel cell powered locomotives, aircrafts, household distributed power supplies and the like. The plate and the plurality of membrane electrodes can be stacked to assemble a stack of fuel cells.

Because the distance between the polar plates is small, the CVP generally adopts a mode of detecting the polar plates at intervals to detect the voltage of the fuel cell stack, so that the problem of low detection reliability exists.

Disclosure of Invention

The invention mainly aims to provide a detection system and an automobile, and aims to solve the problem that the voltage acquisition reliability of a fuel cell in the prior art is not high.

In a first aspect, the present application also provides a plate group comprising:

the long-distance stacking structure comprises at least one first polar plate and at least one second polar plate, wherein the at least one first polar plate and the at least one second polar plate are sequentially and alternately stacked, the first polar plate comprises a first connector, the second polar plate comprises a second connector, and the length directions of the first polar plate and the second polar plate are perpendicular to the stacking direction of the polar plate group;

the first connector and the second connector are located on the same side of the electrode plate group, and the first connector and the second connector are spaced in the length direction, so that the first connector and the first connector are respectively used for being connected with different battery voltage acquisition devices.

In one embodiment, a part of one side edge of the first electrode plate protrudes to form the first connecting head.

In an embodiment, the second connector is formed by protruding a portion of the edge of the second polar plate on the same side as one side of the first polar plate.

In one embodiment, in the length direction, the first pole plate has a first end, the second pole plate has a second end, and the first end and the second end are oppositely arranged;

the first connector is close to the first end, and the second connector is close to the second end.

In one embodiment, the first plate is integrally formed with the first connector; and/or

The second polar plate and the second connector are integrally formed

In one embodiment, the distance between two adjacent first pole plates and the second pole plate is half of the distance between two adjacent pins of the battery voltage acquisition device.

In an embodiment, the first connector and/or the second connector has a pick-up device bayonet.

In a second aspect, the present application also provides a fuel cell stack comprising a plate group as described above.

In a third aspect, the present application also provides a fuel cell comprising a fuel cell stack as described above.

In a fourth aspect, the present application further provides an automobile comprising the fuel cell described above.

According to the technical scheme, at least one first polar plate and at least one second polar plate are sequentially and alternately stacked to form a polar plate group of the fuel cell stack, the first polar plate comprises a first connector, the second polar plate comprises a second connector, the first connector and the second connector are located on the same side of the polar plate group, and the first connector and the second connector are spaced in the length direction, so that the first connector and the first connector are respectively used for being connected with different cell voltage acquisition devices. Therefore, in the invention, the electrode plate group is provided with the connectors which are arranged at intervals, namely the connectors of the electrode plate group form a dislocation structure for the battery voltage acquisition device CVP opposite insertion, so that the adjacent first electrode plate and the second electrode plate can be respectively opposite inserted with different battery voltage acquisition devices CVP, and the CVP can carry out full pin inspection on the fuel cell stack by 100%.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram of the connection structure of a fuel cell stack and a cell voltage acquisition device according to the present invention;

FIG. 2 is an enlarged schematic view of section I of FIG. 1;

FIG. 3 is a schematic view of the structure of the electrode plate assembly of the present invention;

FIG. 4 is a top view of the battery voltage acquisition device of the present invention;

FIG. 5 is a schematic axial view of a battery voltage acquisition device according to the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Battery voltage acquisition device CVP	11	Pin insertion
12	Locking piece	20	Fuel cell stack
				21	First polar plate	211	First connector
221	Second connector	22	Second pole plate
				23	Collecting device bayonet

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In the related art, fuel cells, particularly hydrogen fuel cells, are mainly used in the fields of fuel cell powered vehicles, passenger cars, trucks, new energy fuel cell powered locomotives, aircraft, household distributed power supplies, and the like of new energy vehicles. Wherein the plate and the plurality of membrane electrodes can be stacked to assemble a stack of fuel cells. Because the distance between the polar plates of the fuel cell is small, such as 1.1mm, the cell voltage acquisition device CVP generally adopts a mode of detecting the polar plates at intervals to detect the voltage of the fuel cell stack 20, and because 100% of all the detection is not performed, the problem of low detection reliability exists.

Therefore, the invention provides a pole plate group, and the adjacent pole plates in the pole plate group are respectively provided with a first connector and a second connector which are arranged in a staggered manner, so that the adjacent pole plates can be respectively inserted into different battery voltage acquisition devices CVP, and the CVP can carry out full pin inspection on the fuel battery stack 20 by 100%.

The concept of the present application is further illustrated below with reference to some specific embodiments.

Referring to fig. 1 and 2, the present embodiment provides a plate group.

In this embodiment, an electrode plate group includes: at least one first polar plate 21 and at least one second polar plate 22, at least one first polar plate 21 and at least one second polar plate 22 alternately piles up the setting in proper order, first polar plate 21 includes first connector 211, second polar plate 22 includes second connector 221, and the length direction of first polar plate 21 and second polar plate 22 is perpendicular to the direction of piling up of polar plate group.

The first connector 211 and the second connector 221 are located on the same side of the electrode plate group, and the first connector 211 and the second connector 221 are spaced apart in the length direction, so that the first connector 211 and the second connector 221 are respectively used for being connected with different battery voltage acquisition devices.

Specifically, in the present embodiment, the first electrode plate 21 and the second electrode plate 22 are made of metal (e.g., stainless steel), and carbon composite material or any other material suitable for use as an electrode plate may be used.

It is understood that, in the present embodiment, the Electrode plate group is used in the fuel cell stack 20, and a plurality of Electrode plate groups are stacked to form a fuel cell by combining at least one Membrane Electrode Assembly (MEA), at least one Gas Diffusion Layer (GDL), a first end plate and a second end plate according to the use requirement.

Referring to fig. 1 and 2, in the stacking direction of the fuel cell stack 20, at least one first electrode plate 21 and at least one second electrode plate 22 are alternately stacked in sequence, and the first electrode plate 21 and the second electrode plate 22 both extend on a plane perpendicular to the stacking direction, where the length directions of the first electrode plate 21 and the second electrode plate 22 are both perpendicular to the stacking direction of the electrode plate groups. The plate group as a whole has four side faces intersecting this plane, i.e. 4 side faces connecting two axial end faces of the plate group. On one of the side surfaces, such as the upper surface in the present embodiment, the first plate 21 has the first connectors 211, the second plate 22 has the second connectors 221, and on the plane of any one of the plates, the projection of all the first connectors 211 on the plane and the projection of all the second connectors 221 on the plane are staggered with each other, so that in the present embodiment, connectors are arranged in a staggered manner with each other between adjacent plates in the plate group. Thus, the adjacent first and

second pole plates

21 and 22 can be inserted into different cell voltage collectors CVP10, respectively, so that the CVP10 can perform a full pin inspection on the fuel cell stack 20 by 100%.

In one embodiment, to facilitate the insertion of the CVP10, a portion of one side edge of the first plate 21 protrudes to form the first connection joint 211.

Referring to fig. 1 and 2, the present embodiment is specifically illustrated by taking the battery voltage collecting device CVP10 as an example of being matched with the upper side wall of the plate group, in this case, the first plate 21 includes a rectangular plate body, and the upper edge of the plate body is protruded upwards to form the first connection joint 211. Preferably, at this time, the first electrode plate 21 and the first connector 211 are integrally formed.

In one embodiment, to facilitate the insertion of the CVP10, a portion of a side edge of the second electrode plate 22 protrudes to form the second connector 221, and the side edge of the second electrode plate 22 is the same side edge as the edge of the first electrode plate 21 having the first connector 211. Preferably, at this time, the second plate 22 and the second connector 221 are integrally formed.

Referring to fig. 1 to 3, the second plate 22 includes a rectangular plate body, and a second connector 221 is formed at an upper edge of the plate body in an upward protruding manner.

It can be understood that the first connector 211 and the second connector 221 are located on the same side of the electrode plate group, so that the plugging space of the CVP10 is reduced, and a small space is occupied during detection as much as possible. It may also be advantageous for an inspector to insert multiple CVPs 10 into the fuel cell stack 20 at the same orientation to improve efficiency.

In one embodiment, in the length direction, the first polar plate 21 has a first end, the second polar plate 22 has a second end, and the first end and the second end are oppositely arranged;

the first connector 211 is close to the first end, and the second connector 221 is close to the second end.

Referring to fig. 1 and 3, in order that the battery voltage collecting device CVP10 connected to the first connection joint 211 and the battery voltage collecting device CVP10 connected to the second connection joint 221 have sufficient operating space, the first connection joint 211 is disposed near the left end of the corresponding first pole plate 21, and the second connection joint 221 is disposed near the right end of the corresponding second pole plate 22.

In one embodiment, the distance between the adjacent first polar plate 21 and the adjacent second polar plate 22 is half of the distance between the adjacent two pins 11 of the battery voltage collecting device.

In this embodiment, since the adjacent pole plates provide connectors arranged in a staggered manner, that is, for any CVP10, the plurality of pins 11 only allow the adjacent two first pole plates 21 or the adjacent two second pole plates 22 to be plugged, the distance between the adjacent two pins 11 may be configured to be the same as the distance between the adjacent two first pole plates 21 or the adjacent two second pole plates 22, that is, twice the distance between the adjacent first pole plates 21 and the adjacent second pole plates 22.

Therefore, in the embodiment, the distance between the adjacent pins 11 of the CVP10 can be twice as long as the distance between the conventional pins, and if the distance between the polar plates is 1.1mm, the distance between the adjacent pins 11 can be 2.2mm, so that the insulation thickness between two Pin pins of the CVP10 is increased, and the defect caused by insufficient thickness of the partition is avoided.

In an embodiment, the first connector 211 and/or the second connector 221 has a capture device mount 23.

Referring to fig. 3, the left side of the first connector 211 has a collecting device bayonet 23, and the right side of the second connector 221 has a collecting device bayonet 23. The acquisition device bayonet 23 is used for being matched with a locking structure on the CVP10 to improve the reliability of connection between the CVO and the fuel cell, and further avoid the separation of the CVP10 and the connector in detection.

At this time, referring to fig. 4 and 5, the locking structure includes: the pin connector comprises a body, a locking piece 12 and an elastic piece, wherein the body is provided with a plurality of pins; the locking piece 12 is rotatably connected to one side wall of the body so as to rotate between a locking position of being clamped into the collecting device bayonet 23 and a releasing position of being separated from the collecting device bayonet 23; the elastic piece is arranged between the locking piece and the body and is used for normally driving the locking piece 12 to rotate from the releasing position to the locking position.

Referring to fig. 4 and 5, the body is a prism, one end of the body has a plurality of rectangular holes for the connectors to be inserted, and the other end of the body has a plurality of wires. A locking member 12 is hinged to one side wall of the body. In this embodiment, the locking member 12 may be a latch, the middle of the latch is hinged to the body, and one end of the latch is bent and extended to form a fastening portion. The other end of the clamping tongue forms a handle part for the maintainer to press. A torsion spring is arranged between the clamping tongue and the body, so that the clamping part of the clamping tongue is always driven to be clung to the side wall of the body, namely the clamping part of the clamping tongue is always driven to rotate from the releasing position to the locking position. Thus, when the CVP10 is engaged with the first connector 211 or the second connector 221, the engaging portion is engaged with the pickup unit mount 23 by the elastic member.

It will be appreciated that the retaining member may also be configured as a detent or other equivalent feature.

In a second aspect, the present application also provides a fuel cell stack 20, wherein the fuel cell stack 20 comprises the above-mentioned electrode plate group. The specific structure of the electrode plate group refers to the above embodiments, and since the fuel cell stack 20 adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

In a third aspect, the present application also provides a fuel cell comprising a fuel cell stack 20 as described above. The specific structure of the fuel cell stack 20 refers to the above embodiments, and since the fuel cell stack 20 adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

In a fourth aspect, the present application further provides an automobile comprising the fuel cell described above. The specific structure of the fuel cell refers to the above embodiments, and since the fuel cell adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here. The automobile can be a fuel cell power automobile, a passenger car, a truck or a new energy fuel cell power locomotive and the like.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A polar plate group detection system is characterized by comprising a polar plate group and a battery voltage acquisition device;

the polar plate group comprises at least one first polar plate and at least one second polar plate, the at least one first polar plate and the at least one second polar plate are sequentially and alternately stacked, the first polar plate comprises a first connector, the second polar plate comprises a second connector, and the length directions of the first polar plate and the second polar plate are perpendicular to the stacking direction of the polar plate group; the first connector and the second connector are positioned on the same side of the electrode plate group and are spaced apart in the length direction, so that the first connector and the second connector are respectively used for being inserted into different battery voltage acquisition devices;

the first polar plate and the first connecting head are integrally formed; and/or the second polar plate and the second connector are integrally formed;

the first connector and/or the second connector are/is provided with an acquisition device bayonet, the acquisition device bayonet is used for being matched with a locking structure of the battery voltage acquisition device, the locking structure comprises a body, a locking part and an elastic part, the body is provided with a plurality of contact pins, and the contact pins are connected with the first connector or the second connector;

the distance between the adjacent first polar plates and the second polar plates is half of the distance between the adjacent two contact pins of the battery voltage acquisition device; the distance between the adjacent first polar plate and the second polar plate is 1.1mm, and the distance between the adjacent contact pins is 2.2mm.

2. The plate pack detection system of claim 1, wherein a portion of a side edge of the first plate protrudes to form the first connector.

3. The electrode plate group detection system according to claim 2, wherein a portion of the edge of the second electrode plate on the same side as one side of the first electrode plate protrudes to form the second connector.

4. The electrode plate set detection system of claim 1, wherein in the length direction, the first electrode plate has a first end, the second electrode plate has a second end, and the first end and the second end are oppositely disposed;

5. A fuel cell stack testing system, comprising an electrode plate group testing system according to any one of claims 1 to 4.

6. A fuel cell testing system, characterized in that the fuel cell comprises a fuel cell stack testing system according to claim 5.

7. An automobile comprising the fuel cell detection system of claim 6.