Fuel cell stack group and fuel cell system

Abstract

The utility model discloses a fuel cell stack group and a fuel cell system, which belong to the technical field of fuel cells, and comprise a box body, a plurality of cell main bodies are arranged in the box body, the bottom of each cell main body is communicated with an external pipe, the top of each cell main body is communicated with two wiring terminals, the top of the box body is provided with an upper cover, a plurality of connecting devices are connected to the bottom of the upper cover, each connecting device comprises a fixing block, a telescopic groove is formed in the bottom of each fixing block, and a telescopic block is slidably connected into each telescopic groove; according to the utility model, the upper cover is attached to the top of the box body, and the upper cover drives the telescopic block to move through the telescopic groove in the fixed block, so that the telescopic block drives the wiring copper plate at the bottom to move downwards, and the bottom of the wiring copper plate is in contact with the wiring terminals at the tops of two adjacent battery main bodies; therefore, the complicated operation caused by the use of an external wire for connection is avoided, and the danger of electric shock caused by manual wiring is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fuel cell technical field especially relates to a fuel cell stack and fuel cell system. BACKGROUND

[0002] Fuel cell is a kind of device that chemical energy is directly converted into electric energy, and its working principle is based on electrochemical reaction, fuel cell is by fuel (such as hydrogen, methanol etc.) and oxidant (usually oxygen) in the battery interior reaction, generates electric energy and water, almost no pollutant, this efficient and environment-friendly energy conversion technology is showing great application potential in multiple fields.

[0003] But in actual use, when fuel cell is connected in series, usually needs to use external line to be fixedly connected, so that when wiring, it is more tedious, and when power connection, it needs to directly contact wiring terminal, and then there is the risk of electric shock when wiring. UTILITY MODEL CONTENTS

[0004] The utility model is provided to solve the problem that traditional fuel cell wiring is more tedious and there is electric shock when wiring.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: a fuel cell stack, comprising box body, the box body is installed with multiple cell main bodies, and the cell main body bottom is communicated with external pipe, and the cell main body top is communicated with two wiring terminals, the box body top is installed with upper cover, the upper cover bottom is connected with multiple connecting devices, the connecting device includes fixed block, the fixed block bottom is equipped with expansion slot, and expansion block is slidably connected in expansion slot, the expansion block bottom is connected with wiring copper plate, the expansion block top is equipped with two built-in slots, and the built-in slot bottom is connected with first spring, and the other end of first spring is connected with the inner wall top of expansion slot.

[0006] As a further description of the above technical scheme:

[0007] The external pipe bottom penetrates the box body bottom, and the wiring copper plate bottom is in contact with the top of two adjacent wiring terminals, and the fixed block top is connected with the upper cover bottom.

[0008] As a further description of the above technical scheme:

[0009] The built-in slot bottom is equipped with support groove, the support groove is slidably connected with support rod, the support rod top is connected with the inner wall top of expansion slot, and first spring is sleeved on support rod.

[0010] As a further description of the above technical scheme:

[0011] And the top of the terminal of one of the two battery bodies is connected with an external terminal, the top of the upper cover is provided with two through slots, and the external terminal penetrates the upper cover through the through slots.

[0012] As a further description of the above technical solution:

[0013] The two installation grooves are provided with the same limiting plate through screws, and the top of the battery body is provided with a limiting groove.

[0014] As a further description of the above technical solution:

[0015] The two sides of the box are provided with the mounting device, the mounting device comprises a movable slot, the movable slot is provided on the top of the box, the connecting block is slidably connected in the movable slot, the connecting block is connected with the clamping block, the connecting block is connected with the pressing block, the pressing block is provided with two fixed slots on one side, and the fixed rod is slidably connected in the fixed slot, the other end of the fixed rod is connected with the inner wall of the movable slot, the outer wall of the fixed rod is provided with the second spring, and the two ends of the second spring are connected with the one side of the pressing block and the one side of the inner wall of the movable slot, respectively, the connecting slot is provided on one side of the movable slot, and the inner wall of the connecting slot is connected with the outer wall of the pressing block.

[0016] As a further description of the above technical solution:

[0017] The bottom of the upper cover is provided with two clamping grooves, and the clamping groove is connected with the one side of the corresponding clamping block.

[0018] A fuel cell system, specifically comprising the following steps:

[0019] By connecting the upper cover with the top of the box, the telescopic block is driven to move through the telescopic slot in the fixed block, so that the telescopic block drives the bottom copper plate to move down, so that the bottom of the copper plate is in contact with the terminal of the top of the two adjacent battery bodies, so as to connect the two adjacent battery bodies, so as to avoid the operation of external connection, and avoid the danger of electric shock of manual wiring.

[0020] As described above, due to the adoption of the above technical scheme, the beneficial effects of the present application are:

[0021] 1. The utility model discloses a connecting device is set up, through the upper cover and the box top is pasted together, through the upper cover through the telescopic groove in fixed block drive telescopic block moves, and then makes telescopic block drive bottom's wiring copper plate move down, makes wiring copper plate bottom and two adjacent two battery main part top's wiring terminal contact, thereby to two adjacent battery main part is connected, thereby avoids to use external wire connection and leads to the operation of being troublesome, and avoids the danger of electric shock that manual wiring exists.

[0022] 2. The utility model discloses a mounting and dismounting device is set up, when the upper cover moves down, through the clamping groove of upper cover bottom extrude clamping block, make clamping block move inwards, and then make clamping block drive connecting block move inwards, and connecting block drive pressure block moves, make pressure block extrude second spring, make second spring produce resilience, when the upper cover and the box top are pasted together, and clamping block resets through the resilience of second spring, and then with clamping groove clamping fixes the upper cover, thereby make the device more convenient when installing, improve installation efficiency. ACCURACY OF DRAWINGS

[0023] Figure 1 A three-dimensional structure schematic diagram of a fuel cell stack group is proposed for the utility model;

[0024] Figure 2 A battery main part structure schematic diagram of a fuel cell stack group is proposed for the utility model;

[0025] Figure 3 A fuel cell stack group is proposed for the utility model, Figure 2 The enlarged structure schematic diagram of part A;

[0026] Figure 4 A box structure schematic diagram of a fuel cell stack group is proposed for the utility model;

[0027] Figure 5 A fuel cell stack group is proposed for the utility model, Figure 4 The enlarged structure schematic diagram of part B.

[0028] Legend: 1, upper cover, 2, box, 3, battery main part, 4, external terminal, 5, installation groove, 6, limit board, 7, limit slot, 8, connecting device, 801, fixed block, 802, support rod, 803, built-in slot, 804, support slot, 805, telescopic block, 806, wiring copper plate, 807, first spring, 9, mounting and dismounting device, 901, clamping block, 902, connecting block, 903, pressure block, 904, fixed rod, 905, second spring, 906, connecting slot, 907, movable slot, 10, wiring terminal, 11, external pipe. DETAILED DESCRIPTION

[0029] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0030] Please refer to Figure 1 - Figure 5 The utility model provides a technical scheme: a fuel cell stack and fuel cell system, including box 2, install multiple cell main body 3 in box 2, and cell main body 3 bottom is connected with external connection pipe 11, and cell main body 3 top is connected with two terminal blocks 10, and the top of the box 2 is provided with an upper cover 1, and the bottom of the upper cover 1 is connected with a plurality of connecting devices 8, the connecting device 8 includes fixed block 801, the bottom of fixed block 801 is provided with telescopic slot, and the telescopic slot is slidably connected with telescopic block 805, and the bottom of telescopic block 805 is connected with wiring copper plate 806, the top of telescopic block 805 is provided with two built-in slots 803, and the bottom of built-in slot 803 is connected with first spring 807, and the other end of first spring 807 is connected with the top of telescopic slot inner wall, and the bottom of external connection pipe 11 penetrates the bottom of box 2, and the bottom of wiring copper plate 806 is in contact with the top of two adjacent terminal blocks 10, and the top of fixed block 801 is connected with the bottom of upper cover 1, the bottom of built-in slot 803 is provided with support slot 804, and support rod 802 is slidably connected in support slot 804, and the top of support rod 802 is connected with the top of telescopic slot inner wall, and first spring 807 is sleeved on support rod 802, and the top of both side cell main body 3 is connected with external connection terminal 4, the top of one terminal block 10, and the top of upper cover 1 is provided with two through slots, and external connection terminal 4 penetrates upper cover 1 through through slot, and the both sides of box 2 inner wall are provided with installation slot 5, and the same limiting plate 6 is installed between two installation slots 5 through screw, and the top of cell main body 3 is provided with limiting slot 7, and the inner wall of limiting slot 7 is attached with the outer wall of limiting plate 6.

[0031] Specifically, by setting the connecting device 8, by moving the upper cover 1, the upper cover 1 is aligned with the top of the box body 2, and then the upper cover 1 is moved downward, so that the upper cover 1 drives the fixing block 801 at the bottom to move downward, the fixing block 801 drives the telescopic block 805 in the telescopic slot to move, and then the telescopic block 805 drives the connecting copper plate 806 at the bottom to move downward, so that the bottom of the connecting copper plate 806 is in contact with the connecting terminal 10. By setting the first spring 807, the first spring 807 drives the connecting copper plate 806 to tightly contact the connecting terminal 10 through the telescopic block 805 by the elasticity of the first spring 807, thereby ensuring the connection effect of the connecting copper plate 806, avoiding deformation of the connecting copper plate 806 due to extrusion during use, and affecting the power-on effect. By connecting the two adjacent battery bodies 3 through the connecting copper plate 806, the operation is avoided to be complicated due to external connection, and the risk of electric shock is avoided by manual wiring. By setting the supporting rod 802 to support the first spring 807, the first spring 807 is prevented from being bent when compressed, which affects the resilience of the first spring 807. By setting the limiting plate 6 to fix the battery body 3, the battery body 3 is prevented from shaking during use, which affects the contact effect of the connecting copper plate 806.

[0032] The box body 2 is provided with the installation and dismounting device 9 on both sides, the installation and dismounting device 9 comprises a movable slot 907, the movable slot 907 is arranged on the top of the box body 2, a connecting block 902 is slidably connected in the movable slot 907, a clamping block 901 is connected to the top of the connecting block 902, a pressing block 903 is connected to the bottom of the connecting block 902, two fixed slots are arranged on one side of the pressing block 903, and a fixed rod 904 is slidably connected in the fixed slot, the other end of the fixed rod 904 is connected to one side of the inner wall of the movable slot 907, a second spring 905 is sleeved on the outer wall of the fixed rod 904, and the two ends of the second spring 905 are respectively connected to one side of the pressing block 903 and one side of the inner wall of the movable slot 907. A connecting slot 906 is arranged on one side of the movable slot 907, the inner wall of the connecting slot 906 is in close contact with and slidably connected to the outer wall of the pressing block 903, two clamping slots are arranged on the bottom of the upper cover 1, and the clamping slots are clamped on one side of the corresponding clamping block 901.

[0033] In a specific implementation, by setting up the installation and removal device 9, when the upper cover 1 moves down, the upper cover 1 drives the edge of the snap-fit ​​groove to press the snap-fit ​​block 901, causing the snap-fit ​​block 901 to move to one side under force. The snap-fit ​​block 901 drives the connecting block 902 to move, and the connecting block 902 drives the pressure block 903 to move. During the movement, the pressure block 903 presses the second spring 905, causing the second spring 905 to compress and generate a rebound force. By setting up the fixing rod 904 to support the second spring 905, it is prevented from swaying left and right when the second spring 905 is compressed, which would cause the second spring 905 to fold and fail to rebound, thus affecting the normal operation of the device. Then, when the upper cover 1 is attached to the top of the box 2, the snap-fit ​​block 901 is reset by the rebound of the second spring 905, and then snaps into the snap-fit ​​groove to fix the upper cover 1, thereby making the device easier to install and improving the installation efficiency.

[0034] Working principle: In use, place the battery body 3 into the housing 2, ensuring the bottom outer connector 11 extends out of the bottom of the housing 2. Then, fix the limiting plate 6 to the mounting slots 5 on both sides with screws. Next, move the top cover 1 down, causing the bottom fixing block 801 to move down. This causes the fixing block 801 to move the telescopic block 805 in the telescopic slot. The telescopic block 805 then moves the bottom wiring copper plate 806 down, connecting two adjacent terminals 10. This prevents the connection of multiple battery bodies 3 when connected. Manual connection poses a risk of electric shock. Before the top cover 1 is attached to the top of the housing 2, the snap-fit ​​block 901 is pressed by the snap-fit ​​groove at the bottom of the top cover 1, causing the snap-fit ​​block 901 to move inward. This causes the snap-fit ​​block 901 to move the connecting block 902, which in turn causes the pressure block 903 to move inward. The pressure block 903 then presses the second spring 905. After the top cover 1 is attached to the top of the housing 2, the rebound of the second spring 905 causes the snap-fit ​​block 901 to snap into place with the snap-fit ​​groove, thus fixing the top cover 1 and making installation more convenient.

[0035] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fuel cell stack, comprising a housing (2), characterized in that, The housing (2) contains multiple battery bodies (3), and the bottom of the battery body (3) is connected to an external pipe (11), and the top of the battery body (3) is connected to two terminals (10). The top of the housing (2) is fitted with a cover (1), and the bottom of the cover (1) is connected to multiple connecting devices (8). The connecting device (8) includes a fixing block (801), the bottom of the fixing block (801) is provided with a telescopic groove, and a telescopic block (805) is slidably connected in the telescopic groove. The bottom of the telescopic block (805) is connected to a wiring copper plate (806), and the top of the telescopic block (805) is provided with two internal slots (803), and the bottom of the internal slots (803) is connected to a first spring (807), and the other end of the first spring (807) is connected to the top of the inner wall of the telescopic groove.

2. A fuel cell stack according to claim 1, characterized in that, The bottom of the outer pipe (11) penetrates the bottom of the box (2), and the bottom of the wiring copper plate (806) contacts the top of two adjacent wiring terminals (10), and the top of the fixing block (801) is connected to the bottom of the top cover (1).

3. A fuel cell stack according to claim 1, characterized in that, The bottom of the built-in groove (803) is provided with a support groove (804), and a support rod (802) is slidably connected in the support groove (804). The top of the support rod (802) is connected to the top of the inner wall of the telescopic groove, and the first spring (807) is sleeved on the outside of the support rod (802).

4. A fuel cell stack according to claim 1, characterized in that, Furthermore, an external terminal (4) is connected to the top of one of the terminals (10) on the top of the battery body (3) on both sides. Two through slots are opened on the top of the cover (1), and the external terminal (4) passes through the cover (1) through the through slots.

5. A fuel cell stack according to claim 1, characterized in that, The inner walls of the box (2) are provided with mounting grooves (5) on both sides, and the same limiting plate (6) is installed between the two mounting grooves (5) by screws. The top of the battery body (3) is provided with a limiting groove (7), and the inner wall of the limiting groove (7) is in contact with the outer wall of the limiting plate (6).

6. A fuel cell stack according to claim 1, characterized in that, The box (2) is equipped with installation and removal devices (9) on both sides. Each installation and removal device (9) includes a movable groove (907) located on the top of the box (2). A connecting block (902) is slidably connected within the movable groove (907). A snap-fit ​​block (901) is connected to the top of the connecting block (902), and a pressure block (903) is connected to the bottom of the connecting block (902). Two fixing grooves are provided on one side of the pressure block (903), and the fixing grooves are slidably connected within them. A fixed rod (904) is connected, and the other end of the fixed rod (904) is connected to one side of the inner wall of the movable groove (907). A second spring (905) is sleeved on the outer wall of the fixed rod (904). The two ends of the second spring (905) are respectively connected to one side of the pressure block (903) and one side of the inner wall of the movable groove (907). A connecting groove (906) is opened on one side of the movable groove (907). The inner wall of the connecting groove (906) is in contact with and slidably connected to the outer wall of the pressure block (903).

7. A fuel cell stack according to claim 1, characterized in that, The bottom of the upper cover (1) has two snap-fit ​​slots, and the snap-fit ​​slots snap-fit ​​with one side of the corresponding snap-fit ​​block (901).

8. A fuel cell system, characterized in that, Applied to any one of the fuel cell stacks of claims 1-7, specifically including the following steps: By attaching the top cover (1) to the top of the box (2), the top cover (1) moves the telescopic block (805) through the telescopic groove in the fixing block (801), which in turn causes the telescopic block (805) to move the bottom wiring copper plate (806) down, so that the bottom of the wiring copper plate (806) contacts the wiring terminals (10) on the top of the two adjacent battery bodies (3), thereby connecting the two adjacent battery bodies (3), thus avoiding the cumbersome operation caused by using external wiring connection, and avoiding the risk of electric shock from manual wiring.

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