CN100350658C - Apparatus for measuring fuel capacity in fuel cell system - Google Patents
Apparatus for measuring fuel capacity in fuel cell system Download PDFInfo
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- CN100350658C CN100350658C CNB2004100806283A CN200410080628A CN100350658C CN 100350658 C CN100350658 C CN 100350658C CN B2004100806283 A CNB2004100806283 A CN B2004100806283A CN 200410080628 A CN200410080628 A CN 200410080628A CN 100350658 C CN100350658 C CN 100350658C
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- fuel
- electrode slice
- liquid level
- measurement mechanism
- anode
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The present invention relates to an apparatus for measuring fuel capacity in a fuel cell system, which comprises a sensing assembly, a resistor, a simulation and digital converter and a controller, wherein the sensing assembly comprises a first electrode plate and a second electrode plate and is accommodated in a fuel storage channel and/or a fuel flow passage layer in order to detect the anode fuel capacity. The second electrode plate is connected to a low potential, one end of the resistor is connected to the first electrode plate, and the other end is electrically connected with a high potential. The input end of the simulation and digital converter is connected to the first end of the first electrode plate and the first end of the resistor in order to input a simulation measured voltage, and the voltage is converted to a digital measured voltage. The controller is connected to the simulation and digital converter in order to input the digital measured voltage, and the voltage is converted to the anode fuel level in the fuel storage channel and/or the fuel flow passage layer.
Description
Technical field
The present invention relates to the technical field of fuel cell, relate in particular to a kind of measurement mechanism that fuel cell system is measured fuel capacity that is used for.
Background technology
Fig. 1 is the structure chart of fuel cell system 10, be to comprise that a fuel flow channel layer 27, one first electrical power/signal transport layer 19, an anode current collection layer 13, a matter pass electrolyte layers 11, a negative electrode current collection layer 15, one second electrical power/signal transport layer 23 and an electromechanical control layer 21, wherein anode current collection layer 13, matter pass electrolyte layers 11 and negative electrode current collection layer 15 formation fuel cell core components 30.With a direct methanol fuel-cell system is example, fuel flow channel layer 27 methanol aqueous solution of flowing through, and can carry out the anode electrochemical reaction at the anode tap that matter passes electrolyte layers 11, its reaction is as follows:
CH
3OH+H
2O→6H
++6e
-+CO
2
And carry out electrochemical cathode at cathode terminal and react, its reaction is as follows:
1.5O
2+6H
++6e
-→3H
2O
As can be known, can chemical energy directly be changed into the low-voltage direct electric energy by electrochemical reaction on having, the supply of electrical energy that is produced is to load 20.
In a direct methanol fuel-cell system, when its employed methanol aqueous solution anode fuel exhausts, need allow direct methanol fuel cell system stop electrochemical reaction earlier on the one hand, in order to avoid damage fuel cell core component 30, and produce irreversible damage.Then need replenish methanol aqueous solution on the one hand, carry out the required of electrochemical reaction so that direct methanol fuel cell system to be provided.For avoiding permanent damage, a liquid level measurement system often is set, in the first electrical power/signal transport layer 19 with the liquid level of detecting methanol aqueous solution anode fuel.
Known liquid level measurement system generally uses condenser type, buoy (floating drum) formula, pressure type, light sensation formula, sound to dial measurement modes such as formula.These liquid level measurement systems in fact often have the restriction of volume and usage space, also need huge and complicated mechanism and circuit auxiliary simultaneously, and the liquid level that can measure solution changes.This can make a lot of liquid level measurement systems be restricted when using.Moreover in miniaturization or microminiaturized direct methanol fuel cell system, known liquid level measurement system is as will be used in the so very little space time, and the liquid level that usually can't effectively measure solution changes, even can't use.So in fuel cell system, known liquid level measurement system design still has many disappearances and gives improved necessity.
Summary of the invention
The technical problem that the present invention solves provides a kind of measurement mechanism that fuel cell system is measured fuel capacity that is used for, and exhausts with the anode fuel of avoiding fuel cell system, and produces nonvolatil infringement.The technical problem of another solution of the present invention provides a kind of measurement mechanism of measuring fuel capacity in fuel cell system, when applying to very little space to solve known liquid level measurement system, can't effectively measure the problem of the liquid level variation of solution.
For solving the problems of the technologies described above, the present invention proposes a kind of measurement mechanism that fuel cell system is measured fuel capacity that is used for, and comprising:
One sensing component is placed in a fuel storage groove and/or the fuel flow channel layer, and in order to touch the degree of this sensing component according to the anode fuel in this fuel storage groove and/or this fuel flow channel layer, converts thereof into corresponding electric property resistance value;
One resistance, the one end is electrically connected to this sensing component.
The present invention also proposes a kind of measurement mechanism that fuel cell system is measured fuel capacity that is used for, and comprises
One sensing component, it comprises one first electrode slice, one second electrode slice, this sensing component is placed in a fuel storage groove and/or the fuel flow channel layer, to detect the capacity of the anode fuel in this fuel storage groove and/or this fuel flow channel layer, this second electrode slice system is electrically connected to an electronegative potential;
One resistance, its first end is electrically connected to this first electrode slice, and second end is electrically connected a high potential;
One analog-to-digital converter, its input are electrically connected to first end of this first electrode slice and this resistance, measure voltage to import a simulation, and are converted into a digital measurement voltage;
One controller is electrically connected to this analog-to-digital converter, importing this digital measurement voltage, and this digital measurement voltage transitions is the liquid level of anode fuel in this fuel storage groove and/or this fuel flow channel layer.
Compared with prior art, the present invention has following beneficial effect: the present invention is used for the measurement mechanism that fuel cell system is measured fuel capacity, not only can avoid running out of gas of fuel cell system, and produce nonvolatil infringement, also can avoid the volume of known liquid level measurement system and the problem of usage space restriction.In addition, modern design of the present invention can provide on the industry and utilize, and the enhancement effect is not only arranged, and also saves volume and cost.
Description of drawings
Fig. 1 is the structure chart of known fuel cell system.
Fig. 2 shows a kind of structural representation that fuel cell system is measured the measurement mechanism of fuel capacity that is used for of the present invention.
Fig. 3 A is the structure chart that shows first embodiment of sensing component of the present invention.
Fig. 3 B shows the structure chart of second embodiment of sensing component of the present invention.
Fig. 4 shows the schematic diagram of resistance value between anode fuel liquid level of the present invention and sensing component.
Fig. 5 is the equivalent circuit diagram that shows sensing component of the present invention.
Fig. 6 A is the structure chart that shows the 3rd embodiment of sensing component of the present invention.
Fig. 6 B is the structure chart that shows the 4th embodiment of sensing component of the present invention.
Fig. 7 be show of the present invention a kind of be used for fuel cell system measure fuel capacity measurement mechanism its utilize the structural representation of multisection type electrode slice.
The figure number explanation
10, fuel cell system 19, the first electrical power/signal transport layer
13, anode current collection layer 11, matter pass electrolyte layers
15, negative electrode current collection layer 23, the second electrical power/signal transport layer
21, electromechanical control layer 27, fuel flow channel layer
40, fuel storage groove 40, fuel flow channel layer
210, sensing component 220, resistance
230, analog-to-digital converter 240, controller
250, storage device 211, first electrode slice
211a, 211b, 211c, first electrode slice 212, second electrode slice
212a, 212b, 212c, second electrode slice 213, grip member
260, alarming device
Embodiment
Fig. 2 shows a kind of schematic diagram that fuel cell system is measured the measurement mechanism of fuel capacity that is used for of the present invention, and this fuel cell system can be arranged on display floater (figure does not show) or other electronic product (figure does not show) inside of an electronic product.This fuel cell system (figure do not show) comprises a fuel storage groove 40, and storing the anode fuel of this fuel cell system, or this fuel cell system (figure does not show) comprises a fuel flow channel layer 40, the zone of flowing for anode fuel.It comprises a sensing component 210, a resistance 220, an analog-to-digital converter 230, a controller 240, a storage device 250 and an alarming device 260 this measurement mechanism.
Fig. 4 be between first electrode slice 211 of the anode fuel liquid level of fuel storage groove 40 and/or fuel flow channel layer 40 and sensing component 210 and second electrode slice 212 resistance value concern schematic diagram, wherein transverse axis is the anode fuel liquid level, unit is centimetre (cm), the longitudinal axis is the resistance value between first electrode slice 211 and second electrode slice 212, and unit is megohm (M Ω).As shown in Figure 4, when anode fuel in fuel storage groove 40 and/or the fuel flow channel layer 40 is when hanging down liquid level, owing to do not touch first electrode slice 211 and second electrode slice 212, sensing component 210 presents off state, and the resistance of sensing component 210 is greater than 4.5M Ω at this moment.And when anode fuel touches first electrode slice 211 and second electrode slice 212 in fuel storage groove 40 and/or the fuel flow channel layer 40, sensing component 210 presents conducting state, and get over for a long time when anode fuel touches first electrode slice 211 and second electrode slice, 212 areas, sensing component 210 to present resistance value few more.But sensing component 210 emulation become a variable resistor 270, and Fig. 5 is the equivalent circuit diagram of sensing component 210 and resistance 220.Just, equivalent measures voltage V
AThe time, via the equivalent electric circuit of Fig. 5, can calculate the resistance value R of sensing component 210 by formula
V, wherein, R1 is the resistance value of resistance 220.By the resistance value of Fig. 4 and the graph of a relation of liquid level, can learn the liquid level of anode fuel at that time again.
Rv=(V
A* R1)/(Vcc-V
A) formula
But this concerns schematic diagram off-line (off-line) measurement and obtains.Simultaneously, the schematic diagram that concerns of this resistance value and liquid level can suitable via curve (curve fitting) method, converts the relation of resistance value and liquid level to a formula.Controller 240 this digital measurement voltage of input V
D, calculate resistance value R according to equivalent electric circuit
V, at last according to this formula with resistance value R
VBe converted to the liquid level of anode fuel in fuel storage groove 40 and/or the fuel flow channel layer 40.
The R1 resistance value size of resistance 220 is can be with the sensitivity that decides measurement, and the present invention can allow liquid level within the constant interval of very low range by selecting suitable R1 resistance value, just can produce sensitive change in voltage.
Fig. 6 A is the structure chart that shows the 3rd embodiment of sensing component of the present invention, and figure B is the structure chart that shows the 4th embodiment of sensing component of the present invention.As shown in Figure 6A, the Copper Foil that the specific implementation means of sensing component 210 can be used in a printed circuit board (PCB) (print circuit board, PCB) is made the first electrode slice 211a, the first electrode slice 211b, the first electrode slice 211c of multisection type and the second electrode slice 212a, the second electrode slice 212b, the second electrode slice 212c that second electrode slice 212 are made multisection type with first electrode slice 211.Shown in Fig. 6 B, other specific implementation means of sensing component 210 can available one grip the first electrode slice 211a, the first electrode slice 211b, the first electrode slice 211c that member 213 is divided into first electrode slice 211 multisection type, and second electrode slice 212 is divided into the second electrode slice 212a, the second electrode slice 212b, the second electrode slice 212c of multisection type, give gripping and form again.See also Fig. 7, first section the first electrode slice 211a and the second electrode slice 212a can provide the reference of lower safety limit liquid level, in case if anode fuel just will replenish anode fuel immediately when being positioned at this lower safety limit liquid level.Second section the first electrode slice 211b and the second electrode slice 212b can provide the reference of normal liquid level, if if anode fuel represents that then the supply status of anode fuel belongs to normal when being positioned at this normal liquid level.The 3rd section the first electrode slice 211c and the second electrode slice 212c can provide the reference of upper safety limit liquid level, replenish if if anode fuel, then must stop the charging of anode fuel immediately when being positioned at the upper safety limit liquid level.The present invention adopts first electrode slice 211 of multisection type and the structure of second electrode slice 212, can obtain the convenience advantage of measuring liquid level height immediately, see through the two kinds of variations that have or not whether two electrode slices of each section have produced voltage, the liquid level that just can grasp anode fuel now is sitting at that liquid level interval.Certainly, first electrode slice 211 of multisection type of the present invention and second electrode slice 212 are not limitation with three sections, and above-mentioned disclosed syllogic first electrode slice 211 and second electrode slice 212 are only as example.
In Fig. 2, this measurement mechanism also comprises a non-volatile memory 250, and it is electrically connected to controller 240.The schematic diagram that concerns of this resistance value and liquid level can be made into a form, the relation of this digital measurement voltage of this form description and anode fuel liquid level, and be stored in the non-volatile memory 250.Controller 240 is according to the digital measurement voltage V of input
D, calculate resistance value R according to equivalent electric circuit
VAt last, controller 240 is according to resistance value R
V,, and check in the liquid level of anode fuel in fuel storage groove 40 and/or the fuel flow channel layer 40 via this form.This digital measurement voltage V when input
DIn the time of not in this form, controller 240 can obtain the liquid level of anode fuel in fuel storage groove 40 and/or the fuel flow channel layer 40 according to the interpolation method.
In Fig. 2, this measurement mechanism also comprises an alarming device 260, and it is electrically connected to controller 240, and when being lower than a default value with the liquid level when anode fuel, controller 240 produces an alarm signal V
C Alarming device 260 is according to this alarm signal V
CProduce caution, wherein, alarming device 260 can be a light-emitting diode (LED), when being lower than a default value with the liquid level when anode fuel, produces a video signal alarm signal.Alarming device 260 can be a loud speaker (speaker) or a buzzer (buzzer), when being lower than a default value with the liquid level when anode fuel, produces a message alarm signal.In the present invention, analog-to-digital converter 230, controller 240 and storage device 250 can be integrated in the integrated circuit, to save volume and cost.
Because measurement mechanism of the present invention possesses easy miniaturization with microminiaturized, therefore measurement mechanism of the present invention can be applied to the fuel cell system of adopting to come out with the manufacturing of printed circuit processing procedure, or is applied to the fuel cell in lamination integration type system.In sum, the present invention is used for the measurement mechanism that fuel cell system is measured fuel capacity, not only can avoid running out of gas of fuel cell system, and produce nonvolatil infringement, also can avoid the volume of known liquid level measurement system and the problem of usage space restriction.
Though the present invention with preferred embodiment openly as above; right its is not in order to limiting the present invention, anyly is familiar with this skill person, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the claim person of defining.
Claims (11)
1. one kind is used for the measurement mechanism that fuel cell system is measured fuel capacity, it is characterized in that, comprising:
One sensing component comprises: one first electrode slice and one second electrode slice, and second electrode slice is electrically connected to an electronegative potential; Described sensing component is placed in a fuel storage groove and/or the fuel flow channel layer, in order to touch the degree of this sensing component according to the anode fuel in this fuel storage groove and/or this fuel flow channel layer, converts thereof into corresponding electric property resistance value;
One resistance, its first end is electrically connected to this first electrode slice, and second end is electrically connected a high potential;
One analog-to-digital converter, its input are electrically connected to first end of this first electrode slice and this resistance, measure voltage to import a simulation, and are converted into a digital measurement voltage;
One controller is electrically connected to this analog-to-digital converter, importing this digital measurement voltage, and this digital measurement voltage transitions is the liquid level of anode fuel in this fuel storage groove and/or this fuel flow channel layer.
2. measurement mechanism according to claim 1 is characterized in that, this controller uses a default formula, being the liquid level of anode fuel in this fuel storage groove and/or this fuel flow channel layer with this digital measurement voltage transitions.
3. measurement mechanism according to claim 1, it is characterized in that, this measurement mechanism, further comprise: a storage device, it is electrically connected to this controller, and stores a form, the relation of this digital measurement voltage of this form description and anode fuel liquid level, this controller via this form, and checks in the liquid level of anode fuel in this fuel storage groove and/or this fuel flow channel layer according to this digital measurement voltage of input.
4. measurement mechanism according to claim 3 is characterized in that, this storage device is a non-volatile memory.
5. measurement mechanism according to claim 3 is characterized in that, when this digital measurement voltage of input during not at this form, this controller must this fuel storage groove according to the interpolation method and/or this fuel flow channel layer in the liquid level of anode fuel.
6. measurement mechanism according to claim 1 is characterized in that, this measurement mechanism further comprises: an alarming device, it is electrically connected to this controller, when being lower than a default value with the liquid level when this anode fuel, produces an alarm signal.
7. measurement mechanism according to claim 6 is characterized in that, this alarming device is a light-emitting diode, when being lower than a default value with the liquid level when this anode fuel, produces a video signal alarm signal.
8. measurement mechanism according to claim 6 is characterized in that, this alarming device is a loud speaker or a buzzer, when being lower than a default value with the liquid level when this anode fuel, produces a message alarm signal.
9. measurement mechanism according to claim 1 is characterized in that, this analog-to-digital converter and this controller can be integrated in the integrated circuit.
10. measurement mechanism according to claim 3 is characterized in that this analog-to-digital converter, controller and storage device can be integrated in the integrated circuit.
11. measurement mechanism according to claim 1 is characterized in that, this first electrode slice and this second electrode slice are multisection type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100806283A CN100350658C (en) | 2004-09-29 | 2004-09-29 | Apparatus for measuring fuel capacity in fuel cell system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100806283A CN100350658C (en) | 2004-09-29 | 2004-09-29 | Apparatus for measuring fuel capacity in fuel cell system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1755970A CN1755970A (en) | 2006-04-05 |
| CN100350658C true CN100350658C (en) | 2007-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100806283A Expired - Fee Related CN100350658C (en) | 2004-09-29 | 2004-09-29 | Apparatus for measuring fuel capacity in fuel cell system |
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| Country | Link |
|---|---|
| CN (1) | CN100350658C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101188298B (en) * | 2006-11-16 | 2010-05-12 | 南亚电路板股份有限公司 | Direct carbinol fuel battery system without density detection device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57182975A (en) * | 1981-05-08 | 1982-11-11 | Hitachi Ltd | Detection of liquid level of fuel cell |
| CN1443299A (en) * | 2000-08-03 | 2003-09-17 | 恩德莱斯和豪瑟尔两合公司 | Device for measuring/determining physical quantity of medium |
| US20040005496A1 (en) * | 2001-07-16 | 2004-01-08 | Kelley Ronald J. | Means for measuring the liquid level in a reservoir for a fuel cell |
-
2004
- 2004-09-29 CN CNB2004100806283A patent/CN100350658C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57182975A (en) * | 1981-05-08 | 1982-11-11 | Hitachi Ltd | Detection of liquid level of fuel cell |
| CN1443299A (en) * | 2000-08-03 | 2003-09-17 | 恩德莱斯和豪瑟尔两合公司 | Device for measuring/determining physical quantity of medium |
| US20040005496A1 (en) * | 2001-07-16 | 2004-01-08 | Kelley Ronald J. | Means for measuring the liquid level in a reservoir for a fuel cell |
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|---|---|
| CN1755970A (en) | 2006-04-05 |
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Owner name: SHENGGUANG(BRITISH CAYMAN ISLANDS) SCIENCE HOLDIN Free format text: FORMER OWNER: SHENGGUANG SCIENCE CO., LTD. Effective date: 20071019 |
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Granted publication date: 20071121 Termination date: 20091029 |