CN210723240U

CN210723240U - Fuel cell system and vehicle

Info

Publication number: CN210723240U
Application number: CN201922055478.5U
Authority: CN
Inventors: 段羽; 赵朕宇; 牛振华; 崔天宇
Original assignee: Weishi Energy Technology Co Ltd
Current assignee: Weishi Energy Technology Co Ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-06-09
Anticipated expiration: 2029-11-25

Abstract

The utility model discloses a fuel cell system and vehicle. The fuel cell system includes: the electric pile and the distribution box are provided with a plug connector, the other one of the electric pile and the distribution box is provided with a plug-in part, a first bus bar is arranged in a slot of the plug-in connector, the plug-in part comprises a second bus bar, and the second bus bar is suitable for being inserted into the slot and is electrically connected with the first bus bar. According to the utility model discloses a fuel cell system, greatly reduced between galvanic pile and the block terminal electric connection structure's weight and occupation space, be favorable to satisfying the vehicle to compact structure and the requirement of lightness, reduced automobile body weight and cost, and electric connection structure can bear jolting and vibrating of whole car, has improved the security performance, has reduced the pressure loss.

Description

Fuel cell system and vehicle

Technical Field

The utility model relates to an automotive filed particularly, relates to a fuel cell system and vehicle.

Background

In a fuel cell system, hydrogen from the anode of the stack reacts with oxygen from the cathode to produce electricity. The distribution box functions to distribute the electrical energy generated by the stack to the load.

In the related art, the stack and the distribution box are connected by a wire harness capable of conducting high voltage and high current, but since the current is high, the required wire harness has a large cross-sectional area, resulting in a large bending radius, a long stroke, high voltage loss and heavy weight. Therefore, the high-voltage wire harness occupies a large amount of space, increases the weight and cost of the vehicle body, and cannot meet the requirements of compact structure and lightness of the whole vehicle.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a fuel cell system to reduce the occupied space and weight of an electrical connection structure between a stack and a distribution box.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a fuel cell system comprising: the electric pile and the distribution box are provided with a plug connector, the other one of the electric pile and the distribution box is provided with a plug-in part, a first bus bar is arranged in a slot of the plug-in connector, the plug-in part comprises a second bus bar, and the second bus bar is suitable for being inserted into the slot and is electrically connected with the first bus bar.

According to some embodiments of the invention, the other of the galvanic pile and the distribution box is sealingly connected with a slot edge of the slot.

According to some embodiments of the utility model, the notch border of slot is equipped with the flanging, the pile with another in the block terminal with the flanging passes through the fastener and connects.

Further, the other one of the galvanic pile and the distribution box and the outward flange are provided with threaded holes, and the fastening piece is in threaded fit with the threaded holes.

According to some embodiments of the invention, the fuel cell system further comprises: a seal for sealing a gap between the other of the distribution box and the stack and the flange.

Further, at least one of the other of the distribution box and the stack and the out-turned edges is provided with a sealing groove for accommodating the sealing member.

According to some embodiments of the invention, the plug is integrally formed in a housing of the distribution box, or the plug is integrally formed in a housing of the galvanic pile.

According to some embodiments of the invention, the other of the galvanic pile and the distribution box is in surface contact with the flanging.

According to some embodiments of the utility model, the bayonet joint includes anodal bayonet joint and negative pole bayonet joint, the grafting portion including be used for with in the anodal bayonet joint anodal grafting portion that first busbar electricity is connected and with in the negative pole bayonet joint the negative pole grafting portion that first busbar electricity is connected, the notch border of anodal bayonet joint with the notch border of negative pole bayonet joint all with the pile with another sealing connection in the block terminal.

Compared with the prior art, the fuel cell system of the utility model has the following advantages:

grafting portion and bayonet joint are pegged graft and are linked to each other to realize the electricity of first busbar and second busbar and be connected, and then realize the electricity of galvanic pile and block terminal and be connected, greatly reduced between galvanic pile and the block terminal electric connection structure's weight and occupation space, be favorable to satisfying the vehicle to the requirement that the structure is compact and light and handy, reduced automobile body weight and cost, and electric connection structure can bear jolting and vibration of whole car, improved the security performance, reduced the pressure loss.

Another object of the present invention is to provide a vehicle including the fuel cell system of the above embodiment.

Compared with the prior art, the vehicle provided by the utility model has the same advantages as the fuel cell system has, and the description is omitted.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic diagram of a fuel cell system according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a distribution box of a fuel cell system according to an embodiment of the present invention;

fig. 3 is a schematic view of an angle of a stack of a fuel cell system according to an embodiment of the present invention;

fig. 4 is a schematic diagram of another angle of the stack of the fuel cell system according to the embodiment of the present invention.

Description of reference numerals:

a fuel cell system 100;

a stack 10; a plug-in part 11; a second bus bar 111; a positive electrode insertion part 112; a negative electrode insertion part 113; a housing 12 of the stack 10; a seal groove 121;

a distribution box 20; a plug-in connector 21; a slot 211; a flange 212; a positive electrode plug 213; a negative electrode connector 214; a first bus bar 22; a housing 23 of the distribution box 20;

a threaded bore 30.

Detailed Description

It should be noted that, in the present invention, 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 4 in conjunction with the embodiments.

Referring to fig. 1, a fuel cell system 100 according to an embodiment of the present invention includes: a stack 10 and a distribution box 20.

Specifically, as shown in fig. 1 to 4, the power distribution box 20 has a plug 21, the stack 10 has a plug 11, a first bus bar 22 is provided in a slot 211 of the plug 21, the plug 11 includes a second bus bar 111, and the second bus bar 111 can be inserted into the slot 211 and electrically connected to the first bus bar 22. Thereby, the electrical connection of the stack 10 and the distribution box 20 is achieved, so that electricity generated by the operation of the stack 10 can be distributed to a load through the distribution box 20.

Of course, the positions of the plug 21 and the plug part 11 may be interchanged, and specifically, the stack 10 has the plug 21, the distribution box 20 has the plug part 11, and the plug part 11 may be plugged with the plug 21 to electrically connect the first bus bar 22 and the second bus bar 111. In other words, one of the stack 10 and the distribution box 20 has the plug 21, and the other has the plug 11, the first bus bar 22 is disposed in the slot 211 of the plug 21, and the plug 11 includes the second bus bar 111, and the second bus bar 111 is adapted to be inserted into the slot 211 and electrically connected to the first bus bar 22.

Compared with the prior art in the pile and the block terminal carry out the electricity through high-voltage wire harness and connect, the utility model discloses in cancelled high-voltage wire harness structure, and the electric connection mode who adopts the busbar to connect has reduced electric connection structure's occupation space and weight to a great extent, has successfully solved the big technical problem of traditional pencil occupation space, can satisfy the vehicle to the requirement of compact structure, lightness and handiness to manufacturing cost has been reduced, car sound weight and vehicle use cost have been reduced.

In addition, compared with the traditional wiring harness connection mode, the mode that the bus bars are connected in an inserting mode is firmer and more reliable, the bumping and the vibration of the whole vehicle can be borne, and the vibration resistance of the fuel cell system 100 is greatly improved. The utility model discloses an electric connection structure still very big degree shortened the electric stroke that crosses, reduces the pressure loss, has improved electricity transmission efficiency.

And the junction of first busbar 22 and second busbar 111 is located slot 211, and bayonet joint 21 can shelter from and protect electric connection structure, and on the one hand protection electric connection structure is not damaged by the collision, prevents that impurity such as external liquid, dust from polluting electric connection structure and influencing the reliability of electricity connection, and on the other hand can also shelter from electrified part, prevents that personnel from taking place the electric shock accident, improves the security performance.

The utility model discloses do not special restriction to the concrete structure of slot 211. In some embodiments, as shown in fig. 2, the space in the slot 211 is a rectangular parallelepiped, the first bus bar 22 and the second bus bar 111 are both copper bars, and the side slot wall of the slot 211 may limit the first bus bar 22 and the second bus bar 111, so that the first bus bar 22 and the second bus bar 111 can be in close contact, so as to improve the electrical transmission efficiency. In other embodiments, the cross section of the insertion slot 211 may be square, polygonal, circular, or elliptical, and the like, which only needs to meet the requirement that the plugging portion 11 is plugged into the plug 21 to tightly contact the first bus bar 22 and the second bus bar 111.

According to the utility model discloses fuel cell system 100, grafting portion 11 and bayonet joint 21 are pegged graft and are linked to each other, with the electricity of realizing first busbar 22 and second busbar 111 is connected, and then realize galvanic pile 10 and block terminal 20's electricity and connect, greatly reduced between galvanic pile 10 and the block terminal 20 electric connection structure's weight and occupation space, be favorable to satisfying the requirement that the vehicle compact and lightened structure, automobile body weight and cost have been reduced, and electric connection structure can bear jolting and vibration of whole car, the security performance is improved, the pressure loss is reduced.

According to some embodiments of the present invention, as shown in fig. 2, the plug 21 includes a positive plug 213 and a negative plug 214, the first bus bar 22 is disposed in the slot 211 of the positive plug 213, and the first bus bar 22 is also disposed in the slot 211 of the negative plug 214. As shown in fig. 3 and 4, the socket 11 includes a positive socket 112 and a negative socket 113, and the positive socket 112 and the negative socket 113 include second bus bars 111, respectively. The positive plug 112 is electrically connected to the first bus bar 22 in the positive plug 213 through the second bus bar 111, and the negative plug 113 is electrically connected to the first bus bar 22 in the negative plug 214 through the second bus bar 111.

According to the utility model discloses a some embodiments, another and slot edge sealing connection of slot 211 in electric pile 10 and the block terminal 20 to effectively prevent that external impurity from getting into in slot 211 through the slot and influencing the electricity and connect, satisfied waterproof dustproof grade requirement.

In some embodiments of the present invention, as shown in fig. 1 and fig. 2, the notch edge of the slot 211 is provided with a flanging 212, and the other of the stack 10 and the distribution box 20 can be connected to the flanging 212 through a fastener, thereby realizing the connection between the stack 10 and the distribution box 20, and the connection is reliable, which is beneficial to further improving the stability of the electrical connection between the first bus bar 22 and the second bus bar 111, and improving the electrical transmission efficiency.

For example, in the example shown in fig. 2-4, the flange 212 of each plug 21 is connected to the housing 12 of the stack 10 by four fasteners, so that the stack 10 and the distribution box 20 are connected by eight fasteners, satisfying the required mechanical strength. Of course, the number of fasteners connecting the stack 10 and the distribution box 20 includes, but is not limited to, eight as shown in fig. 2-4, and only needs to satisfy the requirement that the stack 10 and the distribution box 20 are reliably connected.

In some embodiments, the other of the stack 10 and the distribution box 20 and the flange 212 are provided with the threaded hole 30, the fastening member is in threaded fit with the threaded hole 30, the connection mode is simple, the disassembly and assembly are easy, the required operation space is small, and the protruding height of the plug 21 can be designed to be smaller, so as to further improve the structural compactness of the fuel cell system 100.

According to some embodiments of the present invention, the fuel cell system 100 further includes a sealing member for sealing a gap between the other of the distribution box 20 and the stack 10 and the flange 212 to improve the sealing property of the connection, prevent external impurities from entering the slot 211 through the gap and affecting the electrical connection, and satisfy the requirements of the dustproof and waterproof grade.

In some embodiments, as shown in fig. 3 and 4, the plug 21 is disposed on the distribution box 20, at least one of the stack 10 and the flange 212 is provided with a sealing groove 121, and the sealing groove 121 is used for accommodating a sealing element to limit the sealing element and prevent the sealing element from being dislocated to affect the sealing effect.

In some embodiments, the plug 21 may be integrally formed with the housing 23 of the distribution box 20, so that the plug 21 may be integrally formed with the housing 23 of the distribution box 20 during the manufacturing process, thereby simplifying the manufacturing process, improving the manufacturing efficiency, and reducing the connection gap.

In other embodiments, the plug 21 is disposed on the stack 10, and at least one of the distribution box 20 and the flange 212 is provided with a sealing groove 121, and the sealing groove 121 is used for accommodating a sealing element to limit the sealing element and prevent the sealing element from being dislocated to affect the sealing effect.

In other embodiments, the plug 21 may be integrally formed with the housing 12 of the stack 10, so that the plug 21 may be integrally formed with the housing 12 of the stack 10 during the production process, thereby simplifying the manufacturing process, improving the production efficiency, and reducing the connection gap.

According to some embodiments of the present invention, the other of the stack 10 and the distribution box 20 is in surface-to-surface contact with the flange 212. For example, in the embodiment where the plug 21 is disposed on the distribution box 20, the side surface of the housing 12 of the stack 10 is a plane, the surface of the flange 212 facing the stack 10 is a plane, and the two planes are opposite to each other, so that on one hand, the stability of connection between the stack 10 and the distribution box 20 can be improved, vibration is not easy to occur, and on the other hand, sealing is facilitated.

It should be noted that, in the embodiment where the plug 21 includes the positive plug 213 and the negative plug 214, and the plug 11 includes the positive plug 112 and the negative plug 113, the other of the stack 10 and the distribution box 20 is hermetically connected to the edge of the notch of the positive plug 213, the other of the stack 10 and the distribution box 20 is hermetically connected to the edge of the notch of the negative plug 214, and the positive plug 213 and the negative plug 214 are respectively hermetically connected, which is beneficial to improving the sealing effect, and do not interfere with each other, and short-circuit accidents are not easy to occur.

According to another aspect of the present invention, a vehicle includes the fuel cell system 100 of the above embodiment.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fuel cell system (100), comprising:

the power distribution box comprises a power pile (10) and a power distribution box (20), wherein one of the power pile (10) and the power distribution box (20) is provided with a plug-in connector (21), the other one of the power pile (10) and the power distribution box (20) is provided with a plug-in part (11), a first bus bar (22) is arranged in a slot (211) of the plug-in connector (21), the plug-in part (11) comprises a second bus bar (111), and the second bus bar (111) is suitable for being inserted into the slot (211) and is electrically connected with the first bus bar (22).

2. The fuel cell system (100) of claim 1, wherein the other of the stack (10) and the distribution box (20) is sealingly connected to a slot edge of the receptacle (211).

3. The fuel cell system (100) according to claim 1, wherein a notch edge of the insertion groove (211) is provided with a flange (212), and the other of the stack (10) and the distribution box (20) is connected to the flange (212) by a fastener.

4. The fuel cell system (100) of claim 3, wherein the other of the stack (10) and the distribution box (20) and the flange (212) are each provided with a threaded hole (30), and the fastener is threadedly engaged with the threaded hole (30).

5. The fuel cell system (100) according to claim 3, further comprising:

a seal for sealing a gap between the other of the distribution box (20) and the stack (10) and the flanging (212).

6. The fuel cell system (100) of claim 5, wherein at least one of the other of the distribution box (20) and the stack (10) and the flange (212) is provided with a seal groove (121) for receiving the seal.

7. The fuel cell system (100) according to claim 5, wherein the plug (21) is integrally formed to a housing (23) of the distribution box (20), or wherein the plug (21) is integrally formed to a housing (12) of the stack (10).

8. The fuel cell system (100) of claim 3, wherein the other of the stack (10) and the distribution box (20) is in surface-to-surface contact with the flange (212).

9. A fuel cell system (100) according to any one of claims 2 to 8, wherein the plug (21) comprises a positive plug (213) and a negative plug (214), the plug (11) comprising a positive plug (112) for electrical connection with the first busbar (22) within the positive plug (213) and a negative plug (113) for electrical connection with the first busbar (22) within the negative plug (214),

the notch edge of the positive plug connector (213) and the notch edge of the negative plug connector (214) are hermetically connected with the other one of the electric pile (10) and the distribution box (20).

10. A vehicle, characterized by comprising a fuel cell system (100) according to any one of claims 1-9.