TWM266560U - Embedded enclosed heat pipe for miniature fuel cell assemble - Google Patents

Description

M266560 IV. Creation Instructions (1) [Technical Field to which the New Type belongs] This creation is a heat pipe technology that uses a covering material to isolate electrons and does not affect the heat transfer effect. The heat pipe technology is used to transfer the thermal energy of traditional heating chips to small fuel cell electrolytes. The thermal energy saved increases the temperature of the fuel cell and its reaction rate, so it can increase its power density and voltage value. This technology can improve the lack of low power density and low voltage of traditional small fuel cells. [Previous technology] According to the conventional small fuel cell, please refer to the first icon: the conventional small fuel cell, and the second icon: the characteristic curve of the small fuel cell. It is well known that small methanol fuel cells use the principle of electrochemistry to convert energy from chemical energy to electrical energy. Among them, methanol fuel cells (DMFC) are around 30 ° C, and the anode reaction is to directly oxidize methanol to carbon dioxide and emit electrons. Carbon dioxide is then removed through the vent holes, and the cathode reacts to reduce the oxygen from the air to water and absorb electrons, so there is a current flow on the two electrodes, which results in a voltage drop value. Currently, it is only possible due to low power density. Needed to promote general low-power information products. However, its power density is about 30 mWatt per square centimeter at about 30 ° C, and if it can be raised to about 70 ° C ~ 80 ° C, its power density can be increased to about 70 mWat per square centimeter or more. The value is 2 to 3 times, which is the disadvantage of the conventional small fuel cell. In view of the shortcomings of the low power density of small fuel cells at room temperature, the author's heat pipe laboratory also focuses on the development of heat pipes.

Page 6 M266560 IV. Creation Instructions (2) Supported by the industry ’and actively invested in R & D and creative improvement, and finally completed the structural improvement of this creative work. New content] The technical means for solving this problem (please refer to the third picture) is to use an enameled layer with a coating or coating to isolate the electrons from the cations of the electrolyte, to cover or conduct electricity. Due to concerns, the heating chip 2J0, like a general CPU, has a heat source of about 80 ~ 100 Watt 'or even higher, and its chip temperature is even as high as 700c ~ 8 () C) c. Left f. Therefore, in this creation, the heat energy of the heating chip 270 is changed by using a heat pipe. The evaporation and cooling of the working fluid inside the heat pipe 260 itself are changed. = F absorbs the heat energy of the heat chip 270 and transfers it to the electrolyte of the fuel cell. In the second middle school, the heat officer 260 emits heat to the fuel cell 2000, and the temperature of the liquid is raised to 70 ° C ~ 8f) ° r. Speed, so that the rate density per unit time is about 2 ~ 3 times. Ding Xiang Nd: Its implementation method] In order to familiarize the specialists with the structure and content of this agency, and m = t, it is easy for industry professionals to understand this creative embodiment in depth, and cooperate with the diagram :: Achieved: power efficiency benefits, Here is a detailed description of the creation of this creation with bending = Γ The detailed description is as follows: Please refer to the third material battery pack 2 0 0, which is a tube-type heat pipe fuel cell, the creation of the layered electrode plate 2 40, and Soil :: reverse 23 ° 'lower cover plate 250 with several s electrolyte in the middle and anode made of alcohol and water

M266560 IV. Creative Instructions (3) The reaction of carbon dioxide, hydrogen ions and emitted electrons, and the reaction of the cathode by the hydrogen ions passing through the ion exchange membrane and the oxygen entering the outside atmosphere to generate water. The carbon dioxide produced by the reaction of the two electrodes and the oxygen of the reaction need to be in contact with the atmosphere through the vent hole 22 0, and the upper cover plate 23 0, the lower cover plate 250, the electrode plate 24 0, and the screw 2 10 are used to avoid being stubborn. The electrolyte flows out. In order to increase the reaction rate between the anode and the cathode, in this work, the waste heat generated by the heating chip 270 or the CPU heating chip 270 is transferred to the fuel cell stack 200 through a covered tube-type or flat-type heat pipe 260. In the electrolyte, the power density of the fuel cell stack can be increased from 40mWatt per square centimeter to 70mWatt per square centimeter at normal temperature, which is about 2 to 3 times the original power density value of 4 OmWatt per square centimeter. . In order to avoid the loss of electrons in the electrolyte through the conduction of the heat pipe 260 conductor, we use the high thermal conductivity of the money film or the coated enamel 300 and can isolate the electrons and the conductive effect of the cation and anion of the electrolyte to avoid The conductive metal heat pipe 260 is covered by the electrolytic solution and there is a concern of electrical conductivity. In order to effectively use the space, the heat pipe 260 can be made into a flat shape to facilitate the arrangement and use of the space. Refer to the fourth figure. This is a fuel cell with a flattened heat pipe. The electronic covering material 300 is also covered on the periphery of the heat pipe, and it adheres to 260, which can be a straight or unfolded shape, as long as ^ = 2 conducts heat from the heating chip 27 0 to the fuel cell stack 200 is its function. … &Amp; This creation can also combine two heat pipes 260, 28 0. One is a combination of b fins 2 9 0 and a fuel cell, as shown in the fifth figure. The battery packs 20 are arranged separately or overlapped. g ΰ 9Qn 7 /, 290 different pieces

M266560, Creative Instructions (4) The heat energy of some heating chips 270 is transferred to ^ 'to avoid the overheating operation of the entire 270 and the fuel cell stack 200 normal operation [world air to maintain the system design. In order to understand the heat pipe 26 of this creation more clearly, among the heat pipes with cover type, the figure 丄 θ is made by the younger six. The heat pipe is made of copper or inscription. (Shown) is a filling liquid that can undergo phase change, generally its unheated end 3 2 0 in the water diagram is to receive the heat energy of the heating crystal 2 70 to vaporize the filling liquid into vapor and cover it with a thermal insulation material 3 1 0 The heat insulation part is radiated to the fuel cell stack 2000 by the condensing part covered with the coating material 3000, and the temperature of the electrolyte is increased to increase the reaction rate. Figure 6B clearly points out that in addition to the round tube-shaped heat pipe, there is also a flat-shaped heat pipe design for space design needs. Figure 6C shows an uncovered round-tube or flat heat-changing tube. Figure 6A and Figure 6B are used in combination to avoid overheating of the heating chip 270.

M266560 Brief description of the diagram. The first picture: a conventional small fuel cell. The second picture: a characteristic curve of a small fuel cell. The third picture: a fuel cell with a bent tube heat pipe. The fourth picture: a book. Creation of a fuel cell with a flattened heat pipe. Picture 5: This creation has a combination of a fin and a fuel cell. Picture 6: This work has a covered heat pipe. Picture 6A: A round pipe heat pipe with a cover. 6B: Flat heat pipe with cover type Figure 6C: Round or flat heat pipe without cover type <Picture No.> [Knowledge] 1 0 screw 2 0 vent hole 3 0 upper cover 4 0 electrode Plate 5 0 Lower cover plate [This creative part] 2 0 0 Fuel cell stack 2 1 0 Screw 2 2 0 Vent hole 2 3 0 Upper cover plate 2 40 Electrode plate 2 50 Lower cover plate 260 has a round tube type or flat type Heat pipe 270 Heating chip 280 Round or flat heat pipe without coating 2 9 0 Radiating fins 3 0 0 Covering material 3 1 0 Insulation material 3 2 0 Heating end

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Claims (1)

1. M266560 V. Application for patent scope 1. A small fuel cell stack with a covered heat pipe, in which the upper cover plate, the lower cover plate and the electrode plate contain one or more heat transfer heat pipes, which are used as the heat transfer heat of the electrolyte of the fuel cell stack effect. 2. A small fuel cell stack with a covered heat pipe as described in item 1 of the scope of the patent application. The heat pipe heating part receives the heat energy of the heating chip, the heat pipe insulation part is covered with a heat insulating material, and the cooling part is coated or heat-shrinked. In the sleeve processing method, a highly thermally conductive and conductive insulating material is coated on the cooling part. 3. A small fuel cell stack with a covered heat pipe as described in item 1 of the scope of the patent application. The outside of the heat pipe can be a straight pipe, a bent pipe or a flat type. The internal capillary structure can be a groove, an internal network, sintered or The combination of the above. A small fuel cell stack with a covered heat pipe as described in item 1 of the scope of the patent application, the fuel cell stack can be equipped with a cooling fin, which is a combined cooling structure.

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