CN105044440A - Fuel cell monolithic voltage inspection system based on LTC6803 - Google Patents
Fuel cell monolithic voltage inspection system based on LTC6803 Download PDFInfo
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- CN105044440A CN105044440A CN201510530422.4A CN201510530422A CN105044440A CN 105044440 A CN105044440 A CN 105044440A CN 201510530422 A CN201510530422 A CN 201510530422A CN 105044440 A CN105044440 A CN 105044440A
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- 239000000446 fuel Substances 0.000 title claims abstract description 103
- 238000007689 inspection Methods 0.000 title abstract description 5
- 238000004891 communication Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 11
- 241000723353 Chrysanthemum Species 0.000 claims description 10
- 235000007516 Chrysanthemum Nutrition 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract 2
- 238000012544 monitoring process Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
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Abstract
Embodiments of the invention disclose a fuel cell monolithic voltage inspection system based on LTC6803. The system comprises a fuel cell stack, a cell management chip group, a single chip microcomputer and a power supply. The cell management chip group is connected to the fuel cell stack and the single chip microcomputer respectively and is used for carrying out voltage detection on a fuel cell monolithic in the fuel cell stack under the control of the single chip microcomputer so as to acquire voltage data of the fuel cell monolithic and send the voltage data to the single chip microcomputer. The power supply is connected to the cell management chip group and the single chip microcomputer respectively and is used for providing power for the cell management chip group and the single chip microcomputer. By using the fuel cell monolithic voltage inspection system disclosed in the embodiments, detection result is accurate, reliability is high, the structure is simple, power consumption is low and expansibility is good.
Description
Technical field
The embodiment of the present invention relates to a kind of monitoring technology, particularly relates to a kind of single voltage detecting system for feul cells based on LTC6803.
Background technology
Along with the development of pure electric vehicle and hybrid electric vehicle, the tandem type fuel cell pack as important energy storage device becomes the key factor affecting vehicle performance.Tandem type fuel cell piles up in system operation, and due to the existence of bucket effect, the fuel cell monolithic in fuel cell pack can affect the performance of whole battery pile extremely.In the parameter of characterizing battery state, the voltage of battery best embodies its duty, and therefore need each fuel cell monolithic voltage of Real-Time Monitoring, the system of being convenient to makes correct control decision, ensures that system stability reliably runs.
Single voltage detecting system for feul cells is the crucial monitoring system of fuel cell pack, and it can monitor the change that fuel cell piles up output voltage under each hydrogen flowing quantity, oxygen flow, temperature, humidity and pressure condition in real time effectively.
At present, traditional single voltage detecting system for feul cells adopts resistance, operational amplifier, ADC (Analog-to-DigitalConverter, analog to digital converter) etc. discrete component design, hardware configuration is complicated, cost is high, precision is low, and be easily subject to extraneous interference, reliability is not high.
Summary of the invention
The embodiment of the present invention provides a kind of single voltage detecting system for feul cells based on LTC6803, with can simply, the function of the reliably each fuel cell monolithic voltage of Real-Time Monitoring.
First aspect, embodiments provides a kind of single voltage detecting system for feul cells based on LTC6803, and this system comprises: fuel cell pack, battery management chip group, single-chip microcomputer and power supply; Wherein:
Described battery management chip group, be connected with described fuel cell pack and described single-chip microcomputer respectively, for under the control of described single-chip microcomputer, voltage detecting is carried out to fuel cell monolithic in described fuel cell pack, to obtain the voltage data of described fuel cell monolithic, and send described voltage data to described single-chip microcomputer;
Described power supply, is connected with described single-chip microcomputer with described battery management chip group respectively, powers for giving described battery management chip group and described single-chip microcomputer.
Exemplary, battery management chip group is made up of multiple battery management chip;
I-th battery management chip in described battery management chip group, be connected with i-th fuel cell unit in described fuel cell pack, specifically for: under the control of described single-chip microcomputer, voltage detecting is carried out to described i-th fuel cell unit, to obtain the voltage data of each fuel cell monolithic in described i-th fuel cell unit;
Wherein, described i be more than or equal to 1 integer.
Exemplary, each battery management chip in described battery management chip group is with the cascade of serial line interface chrysanthemum formula on-link mode (OLM), and cascaded-output is connected with described single-chip microcomputer.
Exemplary, the battery management chips at different levels in described battery management chip group are LTC6803 chip.
Exemplary, described i is less than or equal to 16, and the fuel cell monolithic quantity in each fuel cell unit is 12.
Exemplary, described single-chip microcomputer is connected with described battery management chip group by SPI (SerialPeripheralinterface, Serial Peripheral Interface (SPI)) bus.
Exemplary, single voltage detecting system for feul cells also comprises the communication module be connected with described single-chip microcomputer, and described power supply powers to described communication module;
Described communication module, for:
The trigger pip of receiving control system timed sending, and described trigger pip is sent to described single-chip microcomputer;
Receive the voltage data of fuel cell monolithic in the described fuel cell pack that described single-chip microcomputer returns according to described trigger pip;
And the voltage data received is sent to described control system;
Wherein, communicated by CAN (ControllerAreaNetwork, controller local area network) bus between described communication module and described control system.
Second aspect, the embodiment of the present invention additionally provides a kind of single voltage detecting system for feul cells method based on LTC6803, and the method comprises:
Single-chip Controlling battery management chip group carries out voltage detecting to fuel cell monolithic in described fuel cell pack, to obtain the voltage data of described fuel cell monolithic;
The described voltage data obtained is sent to described single-chip microcomputer by battery management chip group.
Exemplary, Single-chip Controlling battery management chip group carries out voltage detecting to fuel cell monolithic in described fuel cell pack, comprising:
With each battery management chip of serial line interface chrysanthemum formula on-link mode (OLM) cascade in Single-chip Controlling battery management chip group, voltage detecting is carried out to fuel cell monolithic in described fuel cell pack.
Exemplary, before in Single-chip Controlling battery management chip group is to described fuel cell pack, fuel cell monolithic carries out voltage detecting, also comprise: single-chip microcomputer passes through communication module, the trigger pip of receiving control system timed sending;
After the described voltage data obtained is sent to described single-chip microcomputer by battery management chip group, also comprise: the voltage data that receives by described communication module, is sent to described control system by single-chip microcomputer.
Embodiments provide a kind of single voltage detecting system for feul cells based on LTC6803 and method, detected by the monolithic voltage of Single-chip Controlling battery management chip to connected all fuel cells, and read voltage data, solve conventional fuel cell monolithic voltage inspection system complex structure, the problem that reliability is not high, achieves simply, the function of the reliably each monolithic battery voltage of Real-Time Monitoring.
Accompanying drawing explanation
Fig. 1 is the hardware configuration schematic diagram of a kind of single voltage detecting system for feul cells based on LTC6803 in the embodiment of the present invention one;
Fig. 2 is a kind of fuel cell monolithic voltage method for inspecting schematic flow sheet based on LTC6803 in the embodiment of the present invention two.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not entire infrastructure.
Embodiment one
The hardware configuration schematic diagram of a kind of single voltage detecting system for feul cells based on LTC6803 that Fig. 1 provides for the embodiment of the present invention one, the present embodiment is applicable to the situation of fuel cell monolithic voltage being carried out to Real-Time Monitoring, as shown in Figure 1, this cruising inspection system specifically comprises: fuel cell pack, battery management chip group, single-chip microcomputer and power supply.
Wherein, described battery management chip group, be connected with described fuel cell pack and described single-chip microcomputer respectively, for under the control of described single-chip microcomputer, voltage detecting is carried out to fuel cell monolithic in described fuel cell pack, to obtain the voltage data of described fuel cell monolithic, and send described voltage data to described single-chip microcomputer;
Described power supply, is connected with described single-chip microcomputer with described battery management chip group respectively, powers for giving described battery management chip group and described single-chip microcomputer.Preferably, each battery management chip in described battery management chip group adopts isolated supplies to power, and ensures that the electric current that described each battery management chip absorbs from fuel cell unit is decreased to zero.
Exemplary, battery management chip group is made up of multiple battery management chip;
I-th battery management chip in described battery management chip group, be connected with i-th fuel cell unit in described fuel cell pack, specifically for: under the control of described single-chip microcomputer, voltage detecting is carried out to described i-th fuel cell unit, to obtain the voltage data of each fuel cell monolithic in described i-th fuel cell unit.Described i be more than or equal to 1 integer.
Preferably, the quantity of the fuel cell monolithic in each fuel cell unit is 12.
Preferably, each battery management chip in battery management chip group is with the cascade of serial line interface chrysanthemum formula on-link mode (OLM), and cascaded-output is connected by spi bus with described single-chip microcomputer.Concrete, in this concatenation style, the 1st battery management chip is connected with serial line interface chrysanthemum formula on-link mode (OLM) with the 2nd battery management chip, and the 2nd battery management chip is connected with serial line interface chrysanthemum formula on-link mode (OLM) with the 3rd battery management chip; ...; Until N-1 battery management chip is connected with serial line interface chrysanthemum formula on-link mode (OLM) with N number of battery management chip.N number of battery management chip is connected with single-chip microcomputer by spi bus.N is total number of described multiple battery management chip.
Wherein, i-th battery management chip, specifically for:
After the voltage detecting control signal receiving the i-th+1 battery management chip transmission, described voltage detecting control signal is sent to the i-th-1 battery management chip; And voltage detecting is carried out to described i-th fuel cell unit, to obtain the voltage data of each fuel cell monolithic in described i-th fuel cell unit;
Receive each voltage data that the i-th-1 battery management chip sends; By each voltage data received, and detect the voltage data of each fuel cell monolithic in i-th fuel cell unit obtaining, send to the i-th+1 battery management chip.
Described single-chip microcomputer, specifically for: send voltage detecting control signal to N number of battery management chip; Receive each voltage data that described N number of battery management chip sends.
Preferably, the battery management chips at different levels in described battery management chip group are LTC6803 chip, and battery management chip LTC6803 can complete the voltage measurement of nearly 12 joint fuel cells in series in 15ms.
On the basis of technique scheme, the single voltage detecting system for feul cells that the present embodiment provides also comprises communication module, for: the trigger pip of receiving control system timed sending, and described trigger pip is sent to described single-chip microcomputer; Receive the voltage data of fuel cell monolithic in the described fuel cell pack that described single-chip microcomputer returns according to described trigger pip; And the voltage data received is sent to described control system;
Preferably, communicated by CAN between described communication module with described control system.
The single voltage detecting system for feul cells that the present embodiment provides, the trigger command that single-chip microcomputer is sent by CAN receiving control system, control the voltage of battery management chip to connected fuel cell monolithic to detect, and read voltage data, the voltage data read the most at last sends to control system by CAN, achieves the on-line monitoring to fuel cell monolithic voltage, reaches hardware configuration simple, measuring error is little, the effect that reliability is high.
Embodiment two
Figure 2 shows that a kind of single voltage detecting system for feul cells method flow schematic diagram based on LTC6803 that the embodiment of the present invention two provides, the present embodiment is applicable to the situation of fuel cell monolithic voltage being carried out to Real-Time Monitoring, and the method can be applicable to a kind of single voltage detecting system for feul cells based on LTC6803 that any embodiment of the present invention provides.
See Fig. 2, the method operation specific as follows S210-operates S250.
The trigger pip that S210, single-chip microcomputer receiving control system send.
Concrete, single-chip microcomputer passes through communication module, the trigger pip of receiving control system timed sending.
S220, single-chip microcomputer send voltage acquisition control signal to battery management chip group.
After single-chip microcomputer receives the trigger pip of control system transmission, by sending voltage acquisition control signal, control battery management chip group and voltage detecting is carried out to fuel cell monolithic in described fuel cell pack, to obtain the voltage data of described fuel cell monolithic.
Preferably, single-chip microcomputer to control in battery management chip group, with each battery management chip of serial line interface chrysanthemum formula on-link mode (OLM) cascade, to carry out voltage detecting to fuel cell monolithic in described fuel cell pack by sending voltage acquisition control signal.
S230, battery management chip group start to gather voltage data after receiving described voltage acquisition control signal.
S240, single-chip microcomputer receive described voltage data.
Described voltage data is sent to control system by S250, single-chip microcomputer.
After the described voltage data obtained is sent to described single-chip microcomputer by battery management chip group, by the voltage data that receives by described communication module, send to described control system.
In order to more clearly illustrative control system and single-chip microcomputer and the communication mechanism between single-chip microcomputer and battery management chip group, be now illustrated.Such as: have three battery management chips, by the cascade of serial line interface chrysanthemum formula on-link mode (OLM) between first battery management chip (being connected with 1-12 fuel cell monolithic), second battery management chip (being connected with 13-24 fuel cell monolithic) and the 3rd battery management chip (being connected with 25-36 fuel cell monolithic), the 3rd battery management chip is connected by spi bus with single-chip microcomputer.
After single-chip microcomputer receives the trigger pip of control system transmission, voltage acquisition control signal is sent to the 3rd battery management chip.Start to gather the voltage data of 25-36 fuel cell monolithic after 3rd battery management chip receives voltage acquisition control signal, described voltage acquisition control signal is sent to second battery management chip simultaneously.Start to gather the voltage data of 13-24 fuel cell monolithic after second battery management chip receives voltage acquisition control signal, described voltage acquisition control signal is sent to first battery management chip simultaneously.Start after first battery management chip receives voltage acquisition control signal to gather 1-12 fuel cell monolithic voltage data, and the voltage data collected is sent to second battery management chip.Receive first voltage data that battery management chip collects and second battery management chip self are collected voltage data and send to the 3rd battery management chip together by second battery management chip.These three battery management chips are collected voltage data and send to single-chip microcomputer together by the 3rd battery management chip.Last single-chip microcomputer receives the voltage data of all battery monomers of fuel cell pack, and by the voltage data that receives by described communication module, sends to described control system.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (10)
1. based on a single voltage detecting system for feul cells of LTC6803, it is characterized in that, comprise fuel cell pack, battery management chip group, single-chip microcomputer and power supply; Wherein:
Described battery management chip group, be connected with described fuel cell pack and described single-chip microcomputer respectively, for under the control of described single-chip microcomputer, voltage detecting is carried out to fuel cell monolithic in described fuel cell pack, to obtain the voltage data of described fuel cell monolithic, and send described voltage data to described single-chip microcomputer;
Described power supply, is connected with described single-chip microcomputer with described battery management chip group respectively, powers for giving described battery management chip group and described single-chip microcomputer.
2. system according to claim 1, is characterized in that, battery management chip group is made up of multiple battery management chip;
I-th battery management chip in described battery management chip group, be connected with i-th fuel cell unit in described fuel cell pack, specifically for: under the control of described single-chip microcomputer, voltage detecting is carried out to described i-th fuel cell unit, to obtain the voltage data of each fuel cell monolithic in described i-th fuel cell unit;
Wherein, described i be more than or equal to 1 integer.
3. system according to claim 2, is characterized in that, each battery management chip in described battery management chip group is with the cascade of serial line interface chrysanthemum formula on-link mode (OLM), and cascaded-output is connected with described single-chip microcomputer.
4. system according to claim 3, is characterized in that, the battery management chips at different levels in described battery management chip group are LTC6803 chip.
5. system according to claim 2, is characterized in that, described i is less than or equal to 16, and the fuel cell monolithic quantity in each fuel cell unit is 12.
6. system according to claim 1, is characterized in that, described single-chip microcomputer is connected with described battery management chip group by serial peripheral equipment interface SPI bus.
7. system according to claim 1, is characterized in that, also comprises the communication module be connected with described single-chip microcomputer, and described power supply powers to described communication module;
Described communication module, for:
The trigger pip of receiving control system timed sending, and described trigger pip is sent to described single-chip microcomputer;
Receive the voltage data of fuel cell monolithic in the described fuel cell pack that described single-chip microcomputer returns according to described trigger pip;
And the voltage data received is sent to described control system;
Wherein, communicated by controller area network bus between described communication module with described control system.
8., based on a fuel cell monolithic voltage method for inspecting of LTC6803, be applied to the single voltage detecting system for feul cells according to any one of claim 1-7, it is characterized in that, comprising:
Single-chip Controlling battery management chip group carries out voltage detecting to fuel cell monolithic in described fuel cell pack, to obtain the voltage data of described fuel cell monolithic;
The described voltage data obtained is sent to described single-chip microcomputer by battery management chip group.
9. method according to claim 8, is characterized in that, Single-chip Controlling battery management chip group carries out voltage detecting to fuel cell monolithic in described fuel cell pack, comprising:
With each battery management chip of serial line interface chrysanthemum formula on-link mode (OLM) cascade in Single-chip Controlling battery management chip group, voltage detecting is carried out to fuel cell monolithic in described fuel cell pack.
10. method according to claim 8, it is characterized in that, before in Single-chip Controlling battery management chip group is to described fuel cell pack, fuel cell monolithic carries out voltage detecting, also comprise: single-chip microcomputer passes through communication module, the trigger pip of receiving control system timed sending;
After the described voltage data obtained is sent to described single-chip microcomputer by battery management chip group, also comprise: the voltage data that receives by described communication module, is sent to described control system by single-chip microcomputer.
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Cited By (6)
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| CN109037740A (en) * | 2018-04-23 | 2018-12-18 | 天津中德应用技术大学 | H2 fuel cell stack membrane electrode monomer voltage sync detection device and its method |
| CN110879362A (en) * | 2018-08-28 | 2020-03-13 | 北京蓝吉新能源科技有限公司 | Fuel cell monomer voltage inspection system |
| CN111077467A (en) * | 2019-12-06 | 2020-04-28 | 清华大学 | An impedance measurement method and system |
| CN111239478A (en) * | 2020-03-31 | 2020-06-05 | 苏州钧峰新能源科技有限公司 | Single-chip voltage acquisition and analysis system for fuel cell |
| CN114614053A (en) * | 2020-12-09 | 2022-06-10 | 中国科学院大连化学物理研究所 | A fuel cell single-cell voltage inspection system |
| CN115995583A (en) * | 2021-10-18 | 2023-04-21 | 武汉氢阳能源有限公司 | A fuel cell voltage detection system |
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| CN109037740B (en) * | 2018-04-23 | 2023-11-10 | 天津中德应用技术大学 | Hydrogen fuel cell stack membrane electrode cell voltage synchronous detection device and method thereof |
| CN110879362A (en) * | 2018-08-28 | 2020-03-13 | 北京蓝吉新能源科技有限公司 | Fuel cell monomer voltage inspection system |
| CN111077467A (en) * | 2019-12-06 | 2020-04-28 | 清华大学 | An impedance measurement method and system |
| CN111239478A (en) * | 2020-03-31 | 2020-06-05 | 苏州钧峰新能源科技有限公司 | Single-chip voltage acquisition and analysis system for fuel cell |
| CN114614053A (en) * | 2020-12-09 | 2022-06-10 | 中国科学院大连化学物理研究所 | A fuel cell single-cell voltage inspection system |
| CN114614053B (en) * | 2020-12-09 | 2024-09-06 | 中国科学院大连化学物理研究所 | A single-cell voltage inspection system for fuel cells |
| CN115995583A (en) * | 2021-10-18 | 2023-04-21 | 武汉氢阳能源有限公司 | A fuel cell voltage detection system |
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