Vehicle-mounted hydrogen fuel cell

Abstract

The utility model discloses a vehicle-mounted hydrogen fuel cell which comprises a cell stack and semiconductor thermoelectric generators, the cell stack is of a square structure, the side walls of the square structure are connected with heat-conducting fins, the heat-conducting fins on the left side wall and the right side wall are connected with the semiconductor thermoelectric generators, and the heat-conducting fin on the front side wall is connected with a fan. The semiconductor thermoelectric generator is connected with the electric output end of the battery stack through a circuit; according to the utility model, heat of the battery stack is blown to the heat conducting sheet while the battery stack is air-cooled by the fan, the heat emitted by the battery stack is converted into electric energy by the semiconductor thermoelectric generator, the utilization efficiency of hydrogen fuel is improved, the structure is compact, and the cost is low. And the system is suitable for application scenes with insufficient space, such as hydrogen fuel cell passenger vehicles and hydrogen fuel cell electric vehicles.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydrogen fuel cells, in particular to a vehicle-mounted hydrogen fuel cell. Background Art

[0002] Hydrogen fuel cells are power generation devices that directly convert the chemical energy of hydrogen and oxygen into electrical energy. Hydrogen fuel cells can be used in mobile devices, automobiles and other fields, and have the characteristics of high efficiency, energy saving and environmental protection. At present, in order to improve the utilization rate of hydrogen fuel, hydrogen fuel cells generally use cogeneration to recover heat energy and use the heat energy in the coolant as heat supply. However, this method cannot improve the power generation efficiency, and the structure is relatively complex and occupies a large space. It is not suitable for use in vehicle-mounted hydrogen fuel cell systems, especially in application scenarios where there is not much space, such as hydrogen fuel cell passenger cars and hydrogen fuel cell electric vehicles. Utility Model Content

[0003] The purpose of the utility model is to provide a vehicle-mounted hydrogen fuel cell to solve the problems raised by the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vehicle-mounted hydrogen fuel cell, comprising a battery stack and a semiconductor temperature difference generator, the battery stack is a square structure and the left and right side walls of the square structure are connected to the semiconductor temperature difference generator, the hydrogen inlet and hydrogen outlet of the battery stack are arranged on the upper end plate of the battery stack, and the semiconductor temperature difference generator is connected to the electrical output end of the battery stack through a circuit.

[0005] Furthermore, a fan is connected to the front side wall of the battery stack.

[0006] Installing a fan on the battery stack improves the air cooling effect of the battery stack.

[0007] Furthermore, a heat conducting sheet is fixedly connected to the side wall of the battery stack, and the semiconductor temperature difference generator is fixedly connected to the heat conducting sheets on the left and right side walls of the battery stack.

[0008] The heat emitted by the battery stack is conducted through a heat conductive sheet with good heat transfer effect, thereby increasing the thermal contact area of ​​the semiconductor thermoelectric generator and improving the power generation efficiency of the semiconductor thermoelectric generator.

[0009] Furthermore, the fan is fixedly connected to the heat conductive sheet on the front side wall of the battery stack, and the structure composed of the fan and the heat conductive sheet completely surrounds the front side wall and the left and right side walls of the battery stack, and an opening matching the fan is provided at the front end of the heat conductive sheet.

[0010] The heat dissipation surface of the battery stack is fully surrounded to further increase the thermal contact area of ​​the heat conductive plate and improve the utilization rate of the heat dissipated by the battery stack, thereby improving the power generation efficiency of the semiconductor thermoelectric generator.

[0011] Furthermore, a semiconductor temperature difference generator is arranged in the area at the front end of the heat conducting plate that is not covered by the fan, and the wind direction of the fan is from back to front.

[0012] A semiconductor temperature difference generator is set at the front end of the heat conductive plate, and a fan is used to bring the heat emitted by the battery stack to the front end of the heat conductive plate to further improve the heat utilization efficiency.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model arranges heat conducting plates on the front side and left and right sides of the battery stack, connects a semiconductor temperature difference generator to the heat conducting plates, and uses a fan to cool the battery stack while blowing the heat of the battery stack to the heat conducting plates, thereby converting the heat emitted by the battery stack into electrical energy, thereby improving the utilization efficiency of hydrogen fuel. The utility model has a compact structure and is suitable for application scenarios where space is not sufficient, such as hydrogen fuel cell passenger cars and hydrogen fuel cell electric vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a vehicle-mounted hydrogen fuel cell provided by an embodiment of the utility model;

[0016] Figure 2 This is a schematic structural diagram of a vehicle-mounted hydrogen fuel cell provided by an embodiment of the utility model from another perspective;

[0017] Figure 3 It is a schematic diagram of the structure of the heat conducting sheet provided by the embodiment of the utility model;

[0018] In the figure, 1-battery stack, 2-heat conductive plate, 3-fan, 4-semiconductor temperature difference generator, 11-hydrogen inlet, 12-hydrogen outlet, 21-fan opening. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 3 The utility model provides a technical solution: a vehicle-mounted hydrogen fuel cell, comprising a battery stack 1, a heat conducting sheet 2 with good thermal conductivity, a semiconductor temperature difference generator 4 and a fan 3 for cooling the battery stack;

[0021] The battery stack 1 is a square structure and the front side wall and the left and right side walls of the square structure are fixedly connected with a heat conducting sheet 2. The hydrogen inlet 11 and the hydrogen outlet 12 of the battery stack 1 are arranged on the upper end plate of the battery stack 1. The front end of the heat conducting sheet 2 is fixedly connected with a fan 3, and the front end of the heat conducting sheet 2 is provided with a fan opening 21 matching the fan 3. The wind direction of the fan 3 is from back to front, as shown in FIG. Figure 2 As shown, the side where the fan is located is the front side, and the structure composed of the heat conductive sheet 2 and the fan 3 completely surrounds the front side wall and the left and right side walls of the battery stack 1. The left and right side walls of the heat conductive sheet 2 and the area on the front side wall of the heat conductive sheet 2 that is not covered by the fan 3 are also fixedly connected with a semiconductor temperature difference generator 4, and the semiconductor temperature difference generator 4 is connected to the electrical output end of the battery stack 1 through a circuit, and the fan 3 can also be electrically connected to the electrical output end of the battery stack 1, and the electric energy output by the battery stack 1 drives the fan 3 to rotate to cool the battery stack 1.

[0022] It should be noted that the battery stack 1 is manufactured using existing technology, and the semiconductor thermoelectric generator 4 is a commercial component purchased on the market. Its specific model specifications need to be selected and determined according to the actual specifications of the device, and the selection calculation method adopts the existing technology in this field, so it will not be described in detail. The connection between the semiconductor thermoelectric generator 4 and the electrical output end of the battery stack 1 and the power supply of the fan 3 are clear to those skilled in the art and will not be described in detail here.

[0023] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vehicle-mounted hydrogen fuel cell, characterized in that: It includes a battery stack and a semiconductor thermoelectric generator. The battery stack is a square structure and the left and right side walls of the square structure are connected to the semiconductor thermoelectric generator. The hydrogen inlet and hydrogen outlet of the battery stack are arranged on the upper end plate of the battery stack. The semiconductor thermoelectric generator is connected to the electrical output end of the battery stack through a circuit.

2. The vehicle-mounted hydrogen fuel cell according to claim 1, characterized in that: A fan is connected to the front side wall of the battery stack.

3. The vehicle-mounted hydrogen fuel cell according to claim 2, characterized in that: A heat conducting sheet is fixedly connected to the side wall of the battery stack, and the semiconductor temperature difference generator is fixedly connected to the heat conducting sheets on the left and right side walls of the battery stack.

4. The vehicle-mounted hydrogen fuel cell according to claim 3, characterized in that: The fan is fixedly connected to the heat conducting sheet on the front side wall of the battery stack, and the structure composed of the fan and the heat conducting sheet completely surrounds the front side wall and the left and right side walls of the battery stack. An opening matching the fan is provided at the front end of the heat conducting sheet.

5. The vehicle-mounted hydrogen fuel cell according to claim 4, characterized in that: A semiconductor temperature difference generator is arranged in the area of ​​the front end of the heat conducting plate that is not covered by the fan, and the wind direction of the fan is from back to front.

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