Aluminum alloy hydrogen heater for hydrogen fuel cell

Abstract

The utility model discloses a hydrogen heater for a hydrogen fuel cell made of an aluminum alloy material in the field of fuel cells, which comprises a plurality of partition plates arranged at intervals from top to bottom, the partition plates are parallel to one another, a mounting layer is formed between any two vertically adjacent partition plates, a plurality of fins I and fins II are sequentially arranged in each mounting layer in a staggered manner, and the fins I and the fins II are arranged in parallel. The first fins divide the portion between the corresponding upper partition plate and the corresponding lower partition plate into a plurality of first transverse channels, the second fins divide the portion between the corresponding upper partition plate and the corresponding lower partition plate into a plurality of second longitudinal channels, two first transverse sealing strips are correspondingly arranged on the front sides and the rear sides of the first fins, and the upper sides and the lower sides of the first sealing strips are fixed to the two corresponding partition plates respectively. Two second longitudinal sealing strips are correspondingly arranged on the left side and the right side of the second fin, and the upper sides and the lower sides of the second sealing strips are fixed to the two corresponding partition plates respectively. According to the heat exchanger, the weight can be reduced, light weight is achieved, the internal welding area is increased, the strength is improved, and the heat exchange efficiency is higher.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fuel cell field, especially relate to a hydrogen heater for hydrogen fuel cell of aluminum alloy material. BACKGROUND

[0002] Fuel cell is mainly through electrochemical reaction the fuel (hydrogen) of entering the anode of electric pile and the oxidant (oxygen) of cathode chemical energy is converted into electric energy. Hydrogen is by hydrogen element after pressure reduction gas expansion heat release temperature is lower, for guarantee entering the hydrogen of electric pile normal operating temperature, need to heat.

[0003] In order to save energy consumption, the utility model utilizes the cooling liquid waste heat after fuel cell works to heat the hydrogen entering the electric pile. However, in the prior art, when the heater adopts stainless steel (316L) vacuum nickel-based brazing sheet fin structure, the brazing filler metal cost is high, the welding energy consumption is high, it is not easy to process, and it is too heavy, which is not conducive to the lightweight of the vehicle. UTILITY MODEL CONTENTS

[0004] The utility model discloses a hydrogen heater for hydrogen fuel cell of aluminum alloy material can reduce weight, realize light weight, the welding area of inside increases, and the strength increases, and heat exchange efficiency is higher.

[0005] The utility model discloses a hydrogen heater for hydrogen fuel cell of aluminum alloy material can reduce weight, realize light weight, the welding area of inside increases, and the strength increases, and heat exchange efficiency is higher.

[0006] The utility model discloses a heating device, which comprises a heater, a plurality of fins and a plurality of sealing strips.

[0007] As a further improvement of the utility model, the material of the partition plate, the fin one, the fin two, the sealing strip one and the sealing strip two is aluminum alloy. The heater is more lightweight.

[0008] As a further improvement of the utility model, the fin one is provided with a plurality of main body parts arranged along the longitudinal direction at equal intervals, and the cross section of the main body part is inverted U-shaped.

[0009] As a further improvement of the utility model, the fin two comprises a plurality of fin assemblies arranged along the longitudinal direction in sequence, each fin assembly comprises a front fin located at the front side and a rear fin located at the rear side, the front fin and the rear fin are arranged horizontally, and the front fin and the rear fin are arranged horizontally and staggered along the horizontal direction, a plurality of front channels and rear channels are arranged horizontally on the front fin and the rear fin respectively, the length direction of the front channel and the rear channel is arranged longitudinally, the corresponding front channel of the front fin and the corresponding two rear channels of the adjacent rear fin are communicated, and the corresponding rear channel of the rear fin and the corresponding two front channels of the adjacent front fin are communicated. The fin two is sawtooth-shaped, the number of layers of the heat exchange channels is increased, the flow rate is reduced, and the heat exchange efficiency is improved.

[0010] As a further improvement of the utility model, the front fin and the rear fin are both provided with a plurality of inverted U-shaped channel parts arranged along the horizontal direction at equal intervals.

[0011] As a further improvement of the utility model, the height ratio of the fin two and the fin one is (3:1) to (4:1).

[0012] As a further improvement of the utility model, the upper side and the lower side of the sealing strip one and the sealing strip two are both provided with a horizontal mounting surface, and the inner side of the sealing strip one and the sealing strip two is provided with an inwardly protruding edge. The sealing strip one and the sealing strip two are large-current angle welding with the partition plate, the fin one and the fin two are fixedly welded with the corresponding partition plates on the upper side and the lower side, the welding area is increased, and the strength is increased. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1The utility model discloses a structure schematic view.

[0014] Figure 2 For Figure 1 The enlarged view of A in the middle.

[0015] Figure 3 The utility model discloses a structure schematic view of fin one.

[0016] Figure 4 The utility model discloses a structure schematic view of fin two.

[0017] Figure 5 The utility model discloses a structure schematic view of fin two.

[0018] Figure 6 The structure schematic view of fin two.

[0019] Figure 7 The structure schematic view of two sealing strips one and sealing strips two.

[0020] Among them, 1 is a partition, 2 is fin one, 2a is a main body, 3 is fin two, 3a is a front fin, 3b is a rear fin, 4 is a channel one, 5 is a channel two, 6 is a sealing strip one, 7 is a sealing strip two, 8 is a front channel, 9 is a rear channel, 10 is a channel part, 11 is a mounting surface, and 12 is an edge. Specific implementation

[0021] As Figures 1-7 As shown, it is a hydrogen heater for hydrogen fuel cell of aluminum alloy material, including a plurality of from top to bottom interval arrangement partition 1, each partition 1 parallel to each other, and the upper and lower two adjacent partitions 1 form an installation layer between each other, and a plurality of fin one 2 and fin two 3 are arranged in each installation layer in turn staggered, the fin one 2 will be corresponding between the upper and lower two partitions 1 divided into a plurality of horizontal channels one 4, the fin two 3 will be corresponding between the upper and lower two partitions 1 divided into a plurality of vertical channels two 5, and two horizontal sealing strips one 6 are arranged corresponding to the front and rear sides of the fin one 2, the upper and lower sides of the sealing strip one 6 are fixed with the corresponding two partitions 1, and two vertical sealing strips two 7 are arranged corresponding to the left and right sides of the fin two 3, and the upper and lower sides of the sealing strip two 7 are fixed with the corresponding two partitions 1.

[0022] The material of the partition 1, the fin one 2, the fin two 3, the sealing strip one 6 and the sealing strip two 7 is aluminum alloy. The heater is more lightweight.

[0023] The fin one 2 is provided with a plurality of main body parts 2a arranged at equal intervals along the longitudinal direction, and the cross section of the main body part 2a is inverted U-shaped. The fin two 3 comprises a plurality of fin assemblies arranged along the longitudinal direction in sequence, each fin assembly comprises a front fin 3a located at the front side and a rear fin 3b located at the rear side, the front fin 3a and the rear fin 3b are arranged transversely, and the front fin 3a and the rear fin 3b are arranged transversely staggered, a plurality of front channels 8 and rear channels 9 are arranged on the front fin 3a and the rear fin 3b respectively, the length direction of the front channel 8 and the rear channel 9 is arranged longitudinally, the corresponding front channel 8 of the front fin 3a and the corresponding two rear channels 9 of the adjacent rear fin 3b are communicated, and the corresponding rear channel 9 of the rear fin 3b and the corresponding two front channels 8 of the adjacent front fin 3a are communicated. The fin two 3 is in a zigzag shape, the number of heat exchange channels is increased, the flow rate is reduced, and the heat exchange efficiency is improved. A plurality of inverted U-shaped channel parts 10 are arranged on the front fin 3a and the rear fin 3b at equal intervals along the transverse direction.

[0024] The height ratio of the fin two 3 and the fin one 2 is (3:1)~(4:1).

[0025] The upper and lower sides of the sealing strip one 6 and the sealing strip two 7 are provided with horizontal mounting surfaces 11, and the inner sides of the sealing strip one 6 and the sealing strip two 7 are provided with inwardly protruding edges 12. The sealing strip one 6 and the sealing strip two 7 are large-current angle welded with the partition plate 1, the welding area is increased, and the strength is increased.

[0026] In the working process of the utility model, hydrogen enters the heater from each channel two 5 of the fin two 3, hot water at about 80 DEG C enters the heater from each channel one 4 of the fin one 2, and the temperature of hydrogen is increased after heat exchange. The utility model has the advantages that the inner surface of the heater is treated by deionization, the cooling system has low conductivity, the specific heat capacity of hydrogen at constant pressure is large, more heat needs to be absorbed when heating and increasing temperature, the heat dissipation area of each cold and hot fluid is increased, zigzag fin two 3 and low-wave high fin one 2 are used to increase the number of heat exchange channels, reduce the flow rate, and improve the heat exchange efficiency, the heater has high airtightness requirement, the working pressure is about 1.5MPa, the sealing strip one 6 and the sealing strip two 7 are large-current angle welded with the partition plate 1, the fin one 2 and the fin two 3 are welded and fixed with the corresponding partition plate 1 on the upper and lower sides, the welding area is increased, and the strength is increased.

[0027] The utility model is not limited to the above-mentioned embodiments, on the basis of the technical scheme disclosed by the utility model, the skilled in the art can make some substitutions and deformation to some technical features according to the disclosed technical content without creative labor, and these substitutions and deformation are all within the protection scope of the utility model.

Claims

1. A hydrogen heater for a hydrogen fuel cell made of aluminum alloy, characterized in that: It includes a plurality of partitions arranged at intervals from top to bottom, each partition is parallel to each other, and an installation layer is formed between any two adjacent upper and lower partitions. A plurality of fins 1 and fins 2 are staggered in sequence in each installation layer. Fin 1 divides the corresponding upper and lower partitions into a plurality of transverse channels 1, and the fin 2 divides the corresponding upper and lower partitions into a plurality of longitudinal channels 2. Two transverse seals 1 are provided corresponding to the front and rear sides of the fin 1, and the upper and lower sides of the seal 1 are respectively fixed to the corresponding two partitions, and two longitudinal seals 2 are provided corresponding to the left and right sides of the fin 2, and the upper and lower sides of the seal 2 are respectively fixed to the corresponding two partitions.

2. The hydrogen heater for a hydrogen fuel cell made of aluminum alloy according to claim 1, characterized in that: The materials of the partition, fin 1, fin 2, seal 1 and seal 2 are all aluminum alloy.

3. The hydrogen heater for a hydrogen fuel cell made of aluminum alloy according to claim 1 or 2, characterized in that: The fin 1 is provided with a plurality of main bodies arranged at equal intervals along the longitudinal direction, and the cross section of the main body is an inverted U shape.

4. The hydrogen heater for a hydrogen fuel cell made of aluminum alloy according to claim 1 or 2, characterized in that: The fin 2 includes several groups of fin assemblies arranged longitudinally in sequence, each group of fin assemblies includes front fins located on the front side and rear fins located on the rear side, the front fins and rear fins are arranged transversely, and the front fins and rear fins are staggered in the transverse direction, and the front fins and rear fins are respectively provided with several transversely arranged front channels and rear channels, and the length directions of the front channels and rear channels are arranged longitudinally, the corresponding front channels of the front fins are connected to the corresponding two rear channels of the adjacent rear fins, and the corresponding rear channels of the rear fins are connected to the corresponding two front channels of the adjacent front fins.

5. The hydrogen heater for a hydrogen fuel cell made of aluminum alloy according to claim 4, characterized in that: The front fins and the rear fins are both provided with a plurality of inverted U-shaped channel portions arranged at equal intervals in the transverse direction.

6. The hydrogen heater for a hydrogen fuel cell made of aluminum alloy according to claim 1 or 2, characterized in that: The height ratio of the second fin to the first fin is (3:1) to (4:1).

7. The hydrogen heater for a hydrogen fuel cell made of aluminum alloy according to claim 1 or 2, characterized in that: The upper and lower sides of the first and second seals are both provided with horizontal mounting surfaces, and the inner sides of the first and second seals are both provided with inwardly protruding edges.

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