CN-224232657-U - Cold start heat exchange device of hydrogen fuel cell

Abstract

The utility model provides a cold start heat exchange device of a hydrogen fuel cell, and belongs to the technical field of hydrogen fuel cells. The technical problem that the heat exchange rate of the hydrogen fuel cell is slower in the process of cold start heating is solved. Including accomodating portion circumference and being equipped with a plurality of storage tanks that are used for accomodating heat transfer portion, when not needing the heat exchange, a plurality of heat transfer portions are close to each other and are in the same place the area that reduces the heat dissipation and then reduce thermal loss, and the time can be quick when the next hydrogen fuel cell cold start intensifies to the battery, and the inside heat transfer medium of medium drive assembly drive heat transfer chamber fills into expansion chamber when the battery cold start to promote heat transfer portion and follow storage tank inside roll-off, increased radiating area, promoted the speed of heat exchange.

Inventors

• WANG YUCHI
• JI KAIBIN

Assignees

• 北京普发动力控股股份有限公司

Dates

Publication Date

20260512

Application Date

20250430

Claims (10)

1. 1. A hydrogen fuel cell cold start heat exchange device, comprising: a housing part (1) provided with a plurality of housing grooves (2) in the circumferential direction; the heat exchange cavity (3) is arranged inside the containing part (1), and a heat exchange medium is arranged inside the heat exchange cavity; The heat exchange part (4) is radially and slidably arranged inside the accommodating groove (2) along the accommodating part (1), and an expansion cavity (12) communicated with the heat exchange cavity (3) is arranged inside the heat exchange part; And the medium driving assembly (5) is arranged on the containing part (1) and is used for controlling the medium in the heat exchange cavity (3) to flow into the expansion cavity (12).
2. 2. A cold start heat exchange device of hydrogen fuel cell according to claim 1, wherein a movable plug (6) is slidably arranged in the expansion cavity (12), the movable plug (6) is connected to one end of an elastic part (7) away from a heat exchange medium end, and the other end of the elastic part (7) is arranged on the heat exchange part (4).
3. 3. A cold start heat exchange device for hydrogen fuel cell according to claim 2, wherein the heat exchange part (4) is provided with a sliding tube (10), and the expansion chamber (12) is kept in communication with the heat exchange chamber (3) through the sliding tube (10).
4. 4. A cold start heat exchange device for hydrogen fuel cell according to claim 3, wherein two sets of moving plugs (6) are slidably arranged in the expansion chamber (12), the minimum distance between the two sets of moving plugs (6) is larger than the diameter of the sliding tube (10), and the two sets of moving plugs (6) are positioned on two sides of the sliding tube (10).
5. 5. A cold start heat exchange device for hydrogen fuel cell according to claim 4, wherein the heat exchange part (4) and the housing part (1) are connected by a reset assembly.
6. 6. A cold start heat exchange device for hydrogen fuel cell according to claim 5, wherein the reset assembly comprises a connecting bolt (8) and a reset spring (9), one end of the connecting bolt (8) is arranged on the heat exchange part (4), the other end slides in the accommodating part (1), and the reset spring (9) is sleeved on the connecting bolt (8) and is arranged in the accommodating part (1).
7. 7. The cold start heat exchange device of hydrogen fuel cell according to claim 6, wherein the medium driving component (5) is a moving column, and the moving column penetrates through one side end surface of the accommodating part (1) and is slidably arranged in the heat exchange cavity (3).
8. 8. A cold start heat exchange device for a hydrogen fuel cell according to claim 7, wherein the diameter of the movable column is smaller than the diameter of the heat exchange chamber (3).
9. 9. A cold start heat exchange device for a hydrogen fuel cell according to claim 8, wherein the sliding tube (10) is provided in the middle of the heat exchange portion (4).
10. 10. A cold start heat exchange device for a hydrogen fuel cell according to any one of claims 1 to 9 wherein the heat exchange medium is a solid-liquid Phase Change Material (PCM) and is coupled to the PTC.

Description

Cold start heat exchange device of hydrogen fuel cell Technical Field The utility model relates to the technical field of hydrogen fuel cells, in particular to a cold start heat exchange device of a hydrogen fuel cell. Background Hydrogen energy is an important zero-carbon energy source, and is praised as a future energy source for human beings, and hydrogen fuel cell traffic is an important support and core carrier for hydrogen energy development. The hydrogen fuel cell has a cold start problem under a low temperature condition, and the cold start time is long under the low temperature condition although the cold start problem can be partially solved by purging after shutdown. Existing solutions heat up hydrogen fuel cells at cold start-up, but the rate of heat exchange during heating is slow. Disclosure of utility model In view of the above, the present utility model aims to provide a cold start heat exchange device for a hydrogen fuel cell, which solves the technical problem that the rate of heat exchange of the hydrogen fuel cell is slower in the process of cold start heating. In order to achieve the above object, the present utility model provides a cold start heat exchange device for a hydrogen fuel cell, according to one aspect of the present utility model, comprising: A plurality of storage grooves are formed in the circumferential direction of the storage part; The heat exchange cavity is arranged inside the containing part, and a heat exchange medium is arranged inside the heat exchange cavity; The heat exchange part is radially and slidably arranged in the storage groove along the storage part, and an expansion cavity communicated with the heat exchange cavity is arranged in the heat exchange part; And the medium driving assembly is arranged on the containing part and used for controlling the medium in the heat exchange cavity to flow into the expansion cavity. Furthermore, a movable plug is slidably arranged in the expansion cavity, an elastic part is arranged at the end, away from the heat exchange medium, of the movable plug, and the other end of the elastic part is arranged on the heat exchange part. Further, the heat exchange part is provided with a sliding pipe, and the expansion cavity is continuously communicated with the heat exchange cavity through the sliding pipe. Furthermore, two groups of movable plugs are slidably arranged in the expansion cavity, the minimum distance between the two groups of movable plugs is larger than the diameter of the sliding tube, and the two groups of movable plugs are positioned on two sides of the sliding tube. Furthermore, the heat exchange part is connected with the storage part through a reset component. Still further, reset assembly includes connecting bolt and reset spring, connecting bolt one end sets up on heat exchange portion, and the other end slides in the storage portion inside, and reset spring suit is on the connecting bolt and set up in the storage portion inside. Furthermore, the medium driving component is a moving column, and the moving column penetrates through the end face of one side of the containing part and is slidably arranged in the heat exchange cavity. Further, the diameter of the movable column is smaller than the diameter of the heat exchange cavity. Further, the sliding tube is arranged in the middle of the heat exchange part. Furthermore, the heat exchange medium is made of solid-liquid Phase Change Material (PCM) and is coupled with the PTC. The beneficial effects are that: The storage part circumference is equipped with a plurality of storage grooves that are used for accomodating heat transfer part, when not needing the heat exchange, a plurality of heat transfer parts are close to each other and are reduced radiating area and then reduce thermal loss, and the time can be quick when the next hydrogen fuel cell cold start intensifies to the battery, and the inside heat transfer medium of medium drive assembly drive heat transfer chamber fills into expansion chamber when the battery cold start to promote heat transfer part from accomodating the inside roll-off of groove, increased radiating area, promoted the speed of heat exchange. Drawings The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings: FIG. 1 is a schematic diagram of the overall structure of a cold start heat exchange device for a hydrogen fuel cell according to the present utility model; FIG. 2 is a cross-sectional view of a cold start heat exchange device for a hydrogen fuel cell according to the present utility model; FIG. 3 is an enlarged schematic view of a portion of FIG. 2A; fig. 4 is a schematic view of a housing part of a cold start heat exchange device for a hydrogen fuel cell according to the present utility