阅读说明：本技术 燃料电池堆、车辆、缓冲板及缓冲板的制造方法 (Fuel cell stack, vehicle, buffer plate, and method for manufacturing buffer plate ) 是由 约翰·罗宾逊 科萨斯克·列维 麦克唐纳·斯特林 郝禹铭 于 2019-03-12 设计创作，主要内容包括：本发明公开了一种燃料电池堆、车辆、缓冲板及缓冲板的制造方法。该燃料电池堆包括：燃料电池本体和缓冲板,所述缓冲板设置在所述燃料电池本体的外围,且所述缓冲板上集成有所述弹性缓冲元件。车辆包括：燃料电池堆和储罐,所述储罐用于存储供应给所述燃料电池堆的燃料,在所述车辆的宽度方向上,所述燃料电池堆设置在所述储罐的侧面,且所述燃料电池堆的侧面集成有弹性缓冲元件。通过将弹性缓冲元件集成在燃料电池堆上,有利于减少连接零件的数量,减少装配工序,并且有利于减轻整车重量。同时在侧面碰撞情况下提供了一种保护燃料电池堆和储罐的有效方式,避免发生储罐气体泄漏和燃料电池堆损坏。(The invention discloses a fuel cell stack, a vehicle, a buffer plate and a manufacturing method of the buffer plate. The fuel cell stack includes: the fuel cell comprises a fuel cell body and a buffer plate, wherein the buffer plate is arranged on the periphery of the fuel cell body, and the elastic buffer element is integrated on the buffer plate. The vehicle includes: the fuel cell system includes a fuel cell stack and a reservoir tank for storing fuel supplied to the fuel cell stack, the fuel cell stack being disposed at a side of the reservoir tank in a width direction of the vehicle, and an elastic buffer member being integrated at the side of the fuel cell stack. The elastic buffer element is integrated on the fuel cell stack, so that the number of connecting parts is reduced, the assembly procedures are reduced, and the weight of the whole vehicle is reduced. While providing an effective way of protecting the fuel cell stack and the reservoir in the event of a side impact, avoiding the occurrence of reservoir gas leakage and fuel cell stack damage.)

1. A fuel cell stack (1), characterized by comprising: the fuel cell comprises a fuel cell body (11) and a buffer plate (12), wherein the buffer plate (12) is arranged on the periphery of the fuel cell body (11), and an elastic buffer element (13) is integrated on the buffer plate (12).

2. The fuel cell stack (1) according to claim 1, wherein the buffer plate (12) is an end plate provided at a front end and/or a rear end of the fuel cell body (11).

3. The fuel cell stack (1) according to claim 2, characterized in that the buffer plate (12) has a buffer plate extension edge (121) bent to the side of the fuel cell body (11), the elastic buffer element (13) being integrated on the buffer plate extension edge (121).

4. The fuel cell stack (1) according to claim 1, characterized in that the buffer plate (12) is a side plate provided on the left and/or right side of the fuel cell body (11), the elastic buffer member (13) being integrated on the side plate.

5. The fuel cell stack (1) according to claim 1, characterized in that the buffer plate (12) has a support skeleton (122) inside, the elastic buffer element (13) being integrated on the support skeleton (122).

6. A vehicle (10), characterized by comprising: a reservoir (2) and a fuel cell stack (1) according to any one of claims 1 to 5, the reservoir (2) being for storing fuel supplied to the fuel cell stack (1), the fuel cell stack (1) being disposed on a side of the reservoir (2) in a width direction of the vehicle (10), and the elastic buffer member (13) being integrated with the side of the fuel cell stack (1).

7. The vehicle (10) according to claim 6, characterized in that the elastic buffer member (13) is provided on a side of the fuel cell stack (1) that faces the outside of the vehicle in a width direction of the vehicle (10).

8. Vehicle (10) according to claim 7, characterized in that the resilient damping element (13) is also arranged on the side of the fuel cell stack (1) facing the reservoir (2).

9. A baffle plate (12), comprising: the support frame layer and the elastic buffer layer are coated inside the support frame layer, and the elastic buffer layer at least comprises a rubber layer and a carbon fiber reinforced resin layer.

10. A method of manufacturing a damping plate (12) integrated with resilient damping elements (13), characterized in that the damping plate (12) is a damping plate (12) according to any one of claims 1 to 5, the method comprising the steps of:

placing a support armature (122) within a cavity of a mold;

injecting carbon fiber reinforced resin into the mold cavity;

inserting an elastic member into the carbon fiber reinforced resin of at least one side of the support frame (122);

the thermoplastic process bonds the carbon fiber reinforced resin and the elastic element together;

and (5) curing and forming.

Technical Field

The invention relates to the field of automobiles, in particular to a fuel cell stack, a vehicle with the fuel cell stack, a buffer plate and a manufacturing method of the buffer plate integrated with an elastic buffer element.

Background

On an existing vehicle using a fuel cell, a tank in which fuel (for example, hydrogen gas) for supply to the fuel cell is stored is installed in a central passage under the floor of the fuel cell vehicle, the fuel cell is arranged in the lateral direction of the vehicle and is installed on either side of the tank, and a side collision may cause the fuel cell to collide against the tank and deform the tank, eventually possibly causing fuel leakage from the tank.

Therefore, a collision protection structure is generally provided to protect the fuel cell and the canister, and in the existing collision protection system of the fuel cell vehicle, the collision protection structure is a separate component and needs to be mounted on the vehicle using a separate connector/joint mechanism, resulting in a complicated overall structure and a heavy weight.

Disclosure of Invention

In view of the above, the present invention is directed to a fuel cell stack, the surface of which is integrated with the elastic buffer element to reduce the number of connecting members.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a fuel cell stack comprising: the battery comprises a battery body and a buffer plate, wherein the buffer plate is arranged on the periphery of the battery body, and the elastic buffer element is integrated on the buffer plate.

According to some embodiments of the invention, the buffer plate is an end plate provided at a front end and/or a rear end of the fuel cell body.

Further, the buffer plate has a buffer plate extension edge bent to the side of the fuel cell body, and the elastic buffer member is integrated on the buffer plate extension edge.

According to some embodiments of the invention, the buffer plate is a side plate provided at a left side and/or a right side of the fuel cell body, and the elastic buffer member is integrated on the side plate.

According to some embodiments of the invention, the interior of the cushioning plate has a support skeleton on which the resilient cushioning element is integrated.

Compared with the prior art, the fuel cell stack has the following advantages: by integrating the elastic buffer element on the fuel cell stack, the number of connecting parts and the number of assembly processes are reduced.

A second object of the present invention is to provide a vehicle, including: the fuel cell stack and the reservoir tank described above, the reservoir tank being for storing fuel supplied to the fuel cell stack, the fuel cell stack being disposed on a side surface of the reservoir tank in a width direction of the vehicle, and the elastic buffer member being integrated with the side surface of the fuel cell stack.

According to some embodiments of the invention, the elastic buffer member is provided on a side of the fuel cell stack facing the outside of the vehicle in a width direction of the vehicle.

Further, the elastic buffer element is also arranged on the side of the fuel cell stack facing the storage tank.

Compared with the prior art, the vehicle has the following advantages:

according to the vehicle, the elastic buffer element is integrated on the fuel cell stack, so that the number of connecting parts is reduced, the assembly procedures are reduced, and the weight of the whole vehicle is reduced. While providing an effective way of protecting the fuel cell stack and the reservoir in the event of a side impact, avoiding the occurrence of reservoir gas leakage and fuel cell stack damage.

A third object of the present invention is to provide a buffer plate, including: the support frame layer and the elastic buffer layer are coated inside the support frame layer, and the elastic buffer layer at least comprises a rubber layer and a carbon fiber reinforced resin layer.

Compared with the prior art, the buffer plate has the following advantages: the buffer plate has the functions of buffering and shock absorption.

A fourth object of the present invention is to provide a method for manufacturing a buffer plate integrated with elastic buffer elements, wherein the buffer plate is the above buffer plate, and the method comprises the following steps:

placing a support framework in a mold cavity of a mold;

injecting carbon fiber reinforced resin into the mold cavity;

inserting an elastic member into the carbon fiber reinforced resin of at least one side of the support frame;

the thermoplastic process bonds the carbon fiber reinforced resin and the elastic element together;

and (5) curing and forming.

Compared with the prior art, the manufacturing method of the buffer plate integrated with the elastic buffer elements has the following advantages: the buffer plate obtained by the manufacturing method is stable in structure, and the buffer plate is integrated with the elastic buffer element, so that the energy absorption effect is good.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic illustration of a vehicle according to an embodiment of the present invention;

FIG. 2 is a schematic view of the fuel cell stack and the accumulator mounted on a vehicle;

FIG. 3 is a schematic perspective view of a fuel cell stack;

FIG. 4 is a top view of a fuel cell stack;

FIG. 5 is a side schematic view of a fuel cell stack;

FIG. 6 is a sectional view A-A of FIG. 5;

FIG. 7 is a schematic view of an end face of a fuel cell stack;

FIG. 8 is a top view of a cushioning plate incorporating resilient cushioning elements;

FIG. 9 is a cross-sectional end view of a damping plate integrated with resilient damping elements;

fig. 10 is a method of manufacturing a cushion plate integrated with elastic cushion members.

Description of reference numerals:

the fuel cell system includes a vehicle 10, a fuel cell stack 1, a fuel cell body 11, a buffer plate 12, a buffer plate extension edge 121, a support frame 122, a mounting bracket 123, a mounting hole 124, a buffer plate body 125, an elastic buffer member 13, a tank 2, a frame 3, a cross member 4, and a center tunnel 5.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail with reference to fig. 1 to 10 in conjunction with embodiments.

Referring to fig. 1-2, a vehicle 10 according to an embodiment of the present invention includes: a fuel cell stack 1 and a storage tank 2, the storage tank 2 is used for storing fuel supplied to the fuel cell stack 1, and the fuel can be gas fuel, such as hydrogen gas and the like. The fuel cell stack 1 is disposed at the side of the reservoir 2 in the width direction of the vehicle 10 (i.e., the left-right direction in fig. 1-2), and the side of the fuel cell stack 1 is integrated with an elastic buffer member 13, whereby, when the vehicle 10 is subjected to a side impact force (indicated by an arrow in fig. 1), the elastic buffer member 13 can absorb most of the impact energy, thereby reducing the impact force to which the fuel cell stack 1 and the reservoir 2 are subjected, protecting the fuel cell stack 1 and the reservoir 2, and preventing the fuel cell stack 1 and the reservoir 2 from being deformed, damaged, and leaking fuel due to the impact.

In addition, because the elastic buffer element 13 is integrated on the fuel cell stack 1, the connecting pieces between the elastic buffer element 13 and the fuel cell stack 1 are reduced, and the elastic buffer element 13 and the fuel cell stack 1 are integrated, so that the number of parts is reduced, the assembly process is reduced, and the weight of the whole vehicle is reduced.

In a particular embodiment, the tank 2 and the fuel cell stack 1 are both disposed below the floor of the vehicle 10, and the tank 2 may be disposed within the center tunnel 5 below the floor. As shown in fig. 2, the vehicle frame 3 is arranged in the vehicle length direction (i.e., the front-rear direction in fig. 1-2), the cross member 4 is arranged in the vehicle width direction, and the cross member 4 is overlapped on the vehicle frame 3, and the fuel cell stack 1 is fixed to the cross member 4.

In some embodiments, the vehicle 10 includes a fuel cell module including the fuel cell stack 1, a fuel cell placing chamber in which the fuel cell module is placed, and a tank placing chamber provided below a floor of the vehicle 10; the tank 2 is placed in a tank room, and the tank room is also provided below the floor of the vehicle 10.

According to the vehicle 10 of the embodiment of the invention, the elastic buffer element 13 is integrated on the fuel cell stack 1, so that the number of connecting parts is reduced, the assembly process is reduced, and the weight of the whole vehicle is reduced. While providing an effective way of protecting the fuel cell stack 1 and the reservoir 2 in the event of a side impact to avoid gas leakage from the reservoir 2 and damage to the fuel cell stack 1.

Referring to fig. 1 to 2, in the width direction of the vehicle 10, an elastic buffer member 13 is provided on the side of the fuel cell stack 1 facing the outside of the vehicle. When a side collision occurs on the side of the fuel cell stack 1, a collision force first acts on the elastic buffer member 13, and after the elastic buffer member 13 absorbs most of the collision energy, a small portion of the collision energy is transmitted to the fuel cell stack 1, which is insufficient to damage the fuel cell stack 1, and the collision energy transmitted from the fuel cell stack 1 to the reserve tank 2 is smaller, which is insufficient to damage the reserve tank 2, whereby the fuel gas inside the reserve tank 2 can be prevented from leaking.

Further, as shown in fig. 1 to 2, an elastic buffer member 13 is also provided on the side of the fuel cell stack 1 facing the reservoir 2. When the fuel cell stack 1 transfers the collision energy to the storage tank 2, the collision energy is firstly absorbed by the elastic buffer element 13 between the fuel cell stack 1 and the storage tank 2, so that the collision energy reaching the storage tank 2 is further reduced, and the damage probability of the storage tank 2 is greatly reduced.

Referring to fig. 3 to 5, and 7, a fuel cell stack 1 according to another aspect embodiment of the present invention includes: a fuel cell body 11 and a buffer plate 12, the buffer plate 12 being provided at the periphery of the fuel cell body 11, and an elastic buffer member 13 being integrated on the buffer plate 12. The fuel cell body 11 can be fixed on the buffer plate 12, and the buffer plate 12 can protect the fuel cell body 11, and the elastic buffer member 13 integrated on the buffer plate 12 has a buffering and shock-absorbing effect. By integrating the elastic buffer member 13 on the buffer plate 12, the assembling process of the elastic buffer member 13 and the buffer plate 12 is saved, and the connecting parts are saved.

Alternatively, the buffer plate 12 is an end plate provided at the front end and/or the rear end of the fuel cell body 11. In the embodiment of the invention shown in the drawings, the front and rear ends of the fuel cell body 11 are each provided with an end plate. Of course, in some embodiments, not shown, the end plate may be provided only at the front end of the fuel cell body 11, or only at the rear end of the fuel cell body 11. For convenience of description, the present invention will be described by taking only the case where the end plates are provided at the front and rear ends of the fuel cell body 11 as an example. As shown in fig. 3 to 4, the elastic buffer members 13 are provided on both left and right sides of the end plate at the front end, and the elastic buffer members 13 are also provided on both left and right sides of the end plate at the rear end.

The fuel cell body 11 is disposed between the front and rear end plates, whereby the fuel cell body 11 is provided with the elastic buffer members 13 on both the left and right sides thereof, so that, when the vehicle is subjected to a side collision force, the right-side elastic buffer member 13 shown in fig. 1 absorbs a part of the collision energy first, and the left-side elastic buffer member 13 absorbs a part of the collision energy again, so that the collision energy finally transmitted to the reservoir 2 is reduced to such an extent that the reservoir 2 is not damaged. In addition, when the elastic buffer element 13 on the left side is deformed by being pressed, an avoidance space can be provided for the movement of the fuel cell stack 1 to the storage tank 2, so that the stress of the fuel cell body 11 is improved, and the damage of the fuel cell body 11 is avoided.

Referring to fig. 2-3 and 8, the end plate has a mounting bracket 123, the mounting bracket 123 has a mounting hole 124, and a bolt fastener penetrates through the mounting hole 124 to fix the fuel cell stack 1 to the cross beam 4.

Further, the buffer plate 12 has a buffer plate body 125 and a buffer plate extension edge 121, the buffer plate body 125 is disposed at the end of the fuel cell body 11, the buffer plate extension edge 121 is bent to the side of the fuel cell body 11, and the elastic buffer element 13 is integrated on the buffer plate extension edge 121. As shown in fig. 4, the buffer plate 12 is an end plate having an end plate extension 121 bent to the side of the fuel cell body 11, and the elastic buffer member 13 is integrated on the end plate extension 121.

In some alternative embodiments, a compression plate (not shown) is disposed between the end plate and the fuel cell body 11, and in this case, the compression plate is the buffer plate 12. The compression plate has a compression plate extension edge bent to the side of the fuel cell body 11, and the elastic buffer member 13 is integrated on the compression plate extension edge.

In other embodiments, not shown, the buffer plate 12 is a side plate, the side plate is disposed on the left and/or right side of the fuel cell body 11, and the elastic buffer member 13 is integrated on the side plate, so that the side plate does not need to be provided with an extension edge, and the elastic buffer member 13 can be integrated with the side plate, thereby simplifying the structure of the buffer plate 12.

Referring to fig. 5-6, the inside of the buffer plate 12 has a supporting frame 122, the elastic buffer element 13 is integrated on the supporting frame 122, and the supporting frame 122 can perform supporting and shaping functions, so as to keep the elastic buffer element 13 at the side of the fuel cell body 11 of the fuel cell stack 1, and prevent the elastic buffer element 13 from moving arbitrarily to affect the energy absorption effect during collision.

Optionally, the elastic buffer element 13 is made of rubber, and the rubber has a good damping and energy absorbing effect.

The buffer plate 12 according to the embodiment of the third aspect of the invention includes: the supporting framework layer 122 and the elastic buffer layer, the elastic buffer layer is coated in the supporting framework layer 122, and the elastic buffer layer at least comprises a rubber layer and a carbon fiber reinforced resin layer. The buffer plate 12 has good buffering and shock-absorbing effects, and the elastic buffer layer and the support framework layer 122 are integrally formed by curing, so that connecting parts between the two layers are omitted, and the assembly process is saved.

Referring to fig. 10, a method of manufacturing a cushioning plate 12 integrated with a resilient cushioning element 13 according to a fourth aspect of the present invention includes the steps of:

s1, placing the supporting framework 122 in the die cavity of the die, wherein the supporting framework 122 can play a supporting role to ensure the stable structure of the buffer plate 12, and the structure is shown in FIG. 6;

s2, injecting carbon fiber reinforced resin into the mold cavity, wherein the carbon fiber reinforced resin has higher strength and lighter weight after being molded, and the weight of the fuel cell stack 1 is not increased obviously;

s3, inserting an elastic element into the carbon fiber reinforced resin at least one side of the support frame 122, wherein the elastic element can ensure that the buffer board 12 has light elastic performance to absorb the collision energy, and preferably, the elastic element is inserted into the carbon fiber reinforced resin at each side of the support frame 122 to comprehensively improve the energy absorption capacity of the buffer board 12;

s4, bonding the carbon fiber reinforced resin and the elastic element together by a thermoplastic process so as to enable the buffer plate 12 to be a complete integrated whole;

and S5, curing and forming to ensure that the structure of the buffer plate 12 is determined and is not easy to damage.

The buffer plate 12 obtained by the manufacturing method is stable in structure, the elastic buffer element 13 is integrated in the buffer plate 12, the energy absorption effect is good, parts for connecting the elastic buffer element 13 with the buffer plate 12 are omitted, and the weight of the buffer plate 12 is favorably reduced.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.