CN-224217481-U - Fuel cell system and vehicle

CN224217481UCN 224217481 UCN224217481 UCN 224217481UCN-224217481-U

Abstract

The application provides a fuel cell system and a vehicle, wherein the fuel cell system comprises a shell, a fuel cell stack and a direct current converter, the shell is enclosed to form a sealing cavity, the fuel cell stack is arranged in the sealing cavity, the fuel cell stack comprises a cell stack body, a positive electrode current collecting plate and a negative electrode current collecting plate, the positive electrode current collecting plate and the negative electrode current collecting plate are respectively connected with the cell stack body, the cell stack body is fixedly connected with the shell, the direct current converter is arranged in the sealing cavity, the direct current converter comprises a converter body, a positive electrode plate and a negative electrode plate, the positive electrode plate and the negative electrode plate are respectively connected with the converter body, and the converter body is fixedly connected with the shell, wherein the positive electrode plate is electrically connected with the positive electrode current collecting plate, and the negative electrode plate is electrically connected with the negative electrode current collecting plate. The fuel cell stack and the direct current converter are arranged in the shell at the same time, so that the size and the weight of the fuel cell system are reduced, the current transmission distance between the fuel cell stack and the direct current converter is relatively short, and the current transmission speed between the fuel cell stack and the direct current converter is high and the loss is small.

Inventors

WANG FEI
ZHAO DEQI
CHEN JIE
Shi Lianzhi
WU RENHUA

Assignees

深圳欣锐科技股份有限公司

Dates

Publication Date: 20260508
Application Date: 20250320

Claims (10)

1. A fuel cell system, characterized in that the fuel cell system comprises: The shell encloses a sealing cavity; the fuel cell stack is arranged in the sealing cavity and comprises a cell stack body, an anode current collecting plate and a cathode current collecting plate, wherein the anode current collecting plate and the cathode current collecting plate are respectively connected with the cell stack body which is fixedly connected with the shell, and The direct current converter is arranged in the sealing cavity and comprises a converter body, a positive plate and a negative plate, the positive plate and the negative plate are respectively connected with the converter body, the converter body is fixedly connected with the shell, the positive plate is electrically connected with the positive current collecting plate, and the negative plate is electrically connected with the negative current collecting plate.
2. The fuel cell system of claim 1, further comprising a first fastener that electrically connects the positive plate and the positive current collector and a second fastener that electrically connects the negative plate and the negative current collector.
3. The fuel cell system according to claim 2, wherein the positive current collecting plate includes: a positive electrode base part, one end of which is connected with the pile body and the other end of which extends along the direction of approaching the DC converter, and The positive electrode output end is bent and connected with one end of the positive electrode body close to the direct current converter, and the positive electrode output end is connected with the first fastener; The anode current collecting plate includes: a negative electrode base part, one end of which is connected with the pile body and the other end of which extends along the direction of approaching the DC converter, and The negative electrode output end is bent and connected with one end, close to the direct current converter, of the negative electrode base, and the negative electrode output end is connected with the second fastening piece.
4. The fuel cell system according to claim 3, wherein the positive electrode plate includes: The positive electrode input end is arranged corresponding to the positive electrode output end, is connected with the first fastening piece and is connected with the positive electrode output end through the first fastening piece; The negative electrode plate includes: the negative electrode input end is arranged corresponding to the negative electrode output end, is connected with the second fastening piece and is connected with the negative electrode output end through the second fastening piece.
5. The fuel cell system according to claim 4, wherein the housing includes a first housing portion and a second housing portion, and the first housing portion and the second housing portion enclose a sealed cavity, wherein the first housing portion accommodates the fuel cell stack and is connected to the cell stack body, the second housing portion accommodates the direct current converter and is connected to the converter body, the sealed cavity includes a first accommodation space and a second accommodation space that are communicated, the first housing portion includes the first accommodation space, the first accommodation space accommodates the cell stack body, the second housing portion includes the second accommodation space, and the second accommodation space accommodates the direct current converter.
6. The fuel cell system of claim 5, wherein a cooling flow passage is provided in the second housing portion, the fuel cell system further comprising a water inlet nozzle and a water outlet nozzle provided at a top of the second housing portion and communicating with the cooling flow passage.
7. The fuel cell system according to claim 5, wherein an end of the first housing portion adjacent to the second housing portion is provided with a first connection portion; a second connecting part is arranged at one end of the second shell part, which is close to the first shell part, and a connecting groove facing the first connecting part is arranged at the second connecting part; the fuel cell system further includes: A third fastener passing through the first and second connection portions, and The sealing ring is arranged in the connecting groove, the sealing ring is abutted against the inner surface of the connecting groove, and the sealing ring is abutted against the surface of the first shell part facing the second shell part.
8. The fuel cell system according to claim 5, wherein a protective through hole is provided in the second case portion, and the protective through hole is provided corresponding to at least one of the positive electrode input terminal and the negative electrode input terminal; The fuel cell system further comprises a protective cover, wherein the protective cover is positioned in the protective through hole, and the protective cover is in threaded connection with the second shell part.
9. The fuel cell system according to claim 5, wherein an explosion-proof through hole is provided in the second housing portion, the explosion-proof through hole communicating with the second accommodation space; the fuel cell system further includes: The exhaust valve is arranged in the explosion-proof through hole and connected with the inner wall of the explosion-proof through hole, and the exhaust valve is communicated with the second accommodating space.
10. A vehicle, characterized in that the vehicle comprises: Vehicle body The fuel cell system according to any one of claims 1 to 9, which supplies power to the vehicle body.

Description

Fuel cell system and vehicle Technical Field The present disclosure relates to fuel cell technologies, and in particular, to a fuel cell system and a vehicle. Background The fuel cell system mainly comprises parts such as a fuel cell stack, a direct current converter, an air compressor controller, a hydrogen circulating pump controller and the like, wherein the operation of the whole fuel cell system is directly influenced by the large current exchange between the fuel cell stack and the direct current converter. In the related art, both the fuel cell stack and the dc converter of the fuel cell system require separate housings to be sealed and then fixed together and electrically connected through connectors or copper bars to achieve current exchange, which is disadvantageous for the miniaturized design of the hydrogen fuel cell system. Disclosure of utility model The technical problem to be solved by the embodiments of the present application is that in the existing fuel cell system, both the fuel cell stack and the dc converter need to be sealed by separate housings, which is not beneficial to the miniaturization design of the hydrogen fuel cell system. The application provides a fuel cell system and a vehicle, which reduce the size and weight of the fuel cell system. In a first aspect, the present application provides a fuel cell system comprising: The shell encloses a sealing cavity; the fuel cell stack is arranged in the sealing cavity and comprises a cell stack body, an anode current collecting plate and a cathode current collecting plate, wherein the anode current collecting plate and the cathode current collecting plate are respectively connected with the cell stack body which is fixedly connected with the shell, and The direct current converter is arranged in the sealing cavity and comprises a converter body, a positive plate and a negative plate, the positive plate and the negative plate are respectively connected with the converter body, the converter body is fixedly connected with the shell, the positive plate is electrically connected with the positive current collecting plate, and the negative plate is electrically connected with the negative current collecting plate. According to the fuel cell system provided by the embodiment of the application, the fuel cell stack and the direct current converter are accommodated in the sealing cavity, so that the fuel cell system has stronger integration, and the size and the weight of the fuel cell system are reduced. The fuel cell stack and the direct current converter are arranged in the shell at the same time, so that the current transmission distance between the fuel cell stack and the direct current converter is relatively short, the current transmission speed between the fuel cell stack and the direct current converter is further high, the current transmission loss is small, the power response time of the fuel cell system is short, the reliability of the electric connection between the fuel cell stack and the direct current converter is high, the electric connection cost of the fuel cell stack and the direct current converter is reduced, and the integration of the fuel cell system is facilitated. In some of these embodiments, the fuel cell system further comprises a first fastener that electrically connects the positive plate and the positive current collector plate, and a second fastener that electrically connects the negative plate and the negative current collector plate. In some of these embodiments, the positive current collector plate includes: a positive electrode base part, one end of which is connected with the pile body and the other end of which extends along the direction of approaching the DC converter, and The positive electrode output end is bent and connected with one end of the positive electrode body close to the direct current converter, and the positive electrode output end is connected with the first fastener; The anode current collecting plate includes: a negative electrode base part, one end of which is connected with the pile body and the other end of which extends along the direction of approaching the DC converter, and The negative electrode output end is bent and connected with one end, close to the direct current converter, of the negative electrode base, and the negative electrode output end is connected with the second fastening piece. In some embodiments, the positive electrode plate comprises: The positive electrode input end is arranged corresponding to the positive electrode output end, is connected with the first fastening piece and is connected with the positive electrode output end through the first fastening piece; The negative electrode plate includes: the negative electrode input end is arranged corresponding to the negative electrode output end, is connected with the second fastening piece and is connected with the negative electrode output end through the second fastening piece. In some embodiments, the hous