CN209607851U - A kind of fuel cell voltage check device that channel is configurable - Google Patents
A kind of fuel cell voltage check device that channel is configurable Download PDFInfo
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- CN209607851U CN209607851U CN201920414417.0U CN201920414417U CN209607851U CN 209607851 U CN209607851 U CN 209607851U CN 201920414417 U CN201920414417 U CN 201920414417U CN 209607851 U CN209607851 U CN 209607851U
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- voltage
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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 utility model relates to the fuel cell voltage check devices that a kind of channel can configure, comprising: input processing module is connect, for filtering out harmonic component with the voltage output end of fuel cell；Variable connector conduction module, connect with input processing module, including multiple optocoupler combination switchs in parallel；Monomer channel gating module, connect with variable connector conduction module, including even-numbered channels gating module and odd chanel gating module；Monomer voltage conditioning circuit is connect with monomer channel gating module；Microcontroller is connect with monomer voltage conditioning circuit, even-numbered channels gating module and odd chanel gating module respectively；Communication processing module, connect with microcontroller；Power module, for powering to component each in device.Compared with prior art, the utility model can realize flexible expansion and configurable gating, gating that can at any time to any channel, meet different occasion different applications, circuit design is simple, highly integrated.
Description
Technical field
The utility model relates to battery voltage detection technical field, the fuel cell that can configure more particularly, to a kind of channel
Monomer voltage detection device.
Background technique
High power fuel cell monomer is usually composed in series by up to a hundred battery packs, and batteries monomer voltage health status is anti-
Fuel cell system reliable operation state is reflected, by completing to work to battery pack to the every section monomer voltage condition monitoring of battery pack
State real-time diagnosis provides perfect fault diagnosis mechanism for fuel cell system.Fuel cell voltage theoretical maximum
Up to 1.2V, potential accumulation generates the common-mode voltage for reaching as high as hectovolt under high power fuel cell normal operation, because
This requires fuel cell voltage check device to input with high common mode, and high power fuel cell will appear under specific operation
Pile antipole, the instantaneous negative voltage for generating upper hectovolt, it is desirable that monomer voltage detection device has high-precision.
The prior art and disadvantage: traditional design using electric resistance partial pressure sample, by operational amplifier enhanced processing, send to
ADC is sampled, and hardware configuration is complicated, and at high cost, maximum common mode voltage is low, leakage current shadow caused by the limited accumulation potential of precision
It rings big.Traditional design also has using mechanical switch relay, and every section monomer is sent to operational amplifier and is improved, and every section monomer is born
As op amp reference, such floating ground mode measures every section monomer voltage for pole, vulnerable to switching noise and ground bias effect,
Precision is poor, and reliability is difficult to meet automobile-used demand.
Utility model content
The purpose of this utility model is exactly to overcome the problems of the above-mentioned prior art and providing a kind of channel can match
The fuel cell voltage check device set.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of fuel cell voltage check device that channel is configurable, comprising:
Input processing module is connect, for filtering out harmonic component with the voltage output end of fuel cell；
Variable connector conduction module is connect with the input processing module, including multiple optocoupler combination switchs in parallel；
Monomer channel gating module is connect with the variable connector conduction module, including even-numbered channels gating module and surprise
Number channel gating module；
Monomer voltage conditioning circuit is connect with monomer channel gating module；
Microcontroller gates mould with the monomer voltage conditioning circuit, even-numbered channels gating module and odd chanel respectively
Block connection；
Communication processing module is connect with the microcontroller；
Power module, for powering to component each in device.
Preferably, connected between the input processing module and the voltage output end of fuel cell by flexible circuit board
It connects.
Preferably, the input processing module includes RC absorbing circuit.
Preferably, the monomer voltage conditioning circuit includes difference amplifier conditioning circuit, the difference amplifier conditioning circuit
Input terminal connect with monomer channel gating module, output end is connect with the microcontroller.
Preferably, the monomer voltage conditioning circuit further includes voltage offset electric circuit, the output of the voltage offset electric circuit
End is connect with the microcontroller.
It preferably, further include the temperature sensing circuit being connect with the microcontroller.
Preferably, the Communication processing module includes CAN communication module.
Compared with prior art, the utility model has the advantage that
1, flexible in application: by variable connector conduction module, monomer channel gating module isolation, it can be achieved that flexible expansion and
Configurable gating, gating that can at any time to any channel meet different occasion different applications, circuit design is simple,
It is highly integrated.
2, long service life: by the way that RC absorbing circuit is arranged in the input processing module of connection fuel cell,
With fuel cell system load response, external transient voltage rush of current is reduced, the reliability and service life of device are improved.
3, safe and reliable: pile single-gang junction mode replaces harness to realize the inspection of fuel cell voltage using flexibility FPC
It surveys device to be reliably connected with pile, reduces the parasitism electricity of fuel cell voltage polling plate and the electrical connection generation of pile monomer
The stray parameters such as appearance, distributed inductance guarantee that external impact electric current and voltage change in a certain range, do not cause fuel cell pack
Internal short-circuit improves safety in utilization and reliability, improves monomer detection accuracy and reduces space hold volume, by fuel electricity
Pond monomer voltage polling plate is encapsulated into inside pile, is realized highly integrated.
4, use scope is wide: by voltage offset electric circuit realize different voltages range detection, realize maximum absolute error <
5mV high-acruracy survey, the common-mode voltage of highest 350V and 62 section monomer sampling times < 60mS, can satisfy polymorphic type platform
Fuel cell voltage detecting.
5, channel voltage by vehicle advise differential partite transport put INA148Q detection, INA148Q difference amplifier have high common mode inhibition
Than wide input difference voltage ensure that the reliability of high common mode input and the detection of pile transient negative pressure.
Detailed description of the invention
Fig. 1 is the overall structure diagram of utility model device；
Fig. 2 is the partial circuit diagram of the input processing module of utility model device；
Fig. 3 is the variable connector conduction module circuit diagram of utility model device；
Fig. 4 is the monomer channel gating module circuit diagram of utility model device；
Fig. 5 is the difference amplifier conditioning circuit figure of utility model device；
Fig. 6 is the voltage offset electric circuit figure of utility model device；
Fig. 7 is the microcontroller circuit figure of utility model device；
Fig. 8 is the temperature sensing circuit figure of utility model device；
Fig. 9 is the power module circuitry figure of utility model device；
Figure 10 is the CAN communication module circuit diagram of utility model device；
Figure 11 is the external interface circuit figure of utility model device；
Figure 12 is the FPC change-over terminal subgraph of utility model device.
It is marked in figure: 1, input processing module, 2, variable connector conduction module, 3, monomer channel gating module, 4, even number
Channel gating module, 5, odd chanel gating module, 6, monomer voltage conditioning circuit, 7, microcontroller, 8, power module, 9,
CAN communication module.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.The present embodiment is with the utility model
Implemented premised on technical solution, the detailed implementation method and specific operation process are given, but the guarantor of the utility model
Shield range is not limited to the following embodiments.
Embodiment
As shown in Figure 1, the application proposes a kind of fuel cell voltage check device that channel is configurable, comprising:
Input processing module 1 is connect, for filtering out harmonic component with the voltage output end of fuel cell；Multichannel is opened
Conduction module 2 is closed, is connect with input processing module 1, including multiple optocoupler combination switchs in parallel；Monomer channel gating module 3, with
Variable connector conduction module 2 connects, including even-numbered channels gating module 4 and odd chanel gating module 5；Monomer voltage conditioning electricity
Road 6 is connect with monomer channel gating module 3；Microcontroller 7 gates mould with monomer voltage conditioning circuit 6, even-numbered channels respectively
Block 4 and odd chanel gating module 5 connect；Communication processing module is connect with microcontroller 7；Power module 8, for device
In the power supply of each component, as shown in figure 9, specifically using URA2415YMD in the present embodiment.
Input processing module 1 includes RC absorbing circuit, for responding vehicle fuel battery load variation characteristic, is reduced external
Voltage current impact caused by load sudden change improves lifetime of system.The voltage output of input processing module 1 and fuel cell
Connection type between end replaces harness using flexible circuit board (FPC), as shown in figure 12, reduces the circuit board and electricity of the present apparatus
The stray parameters such as parasitic capacitance, distributed inductance that the electrical connection of heap monomer generates, improve monomer detection accuracy and reduce space and account for
With volume, can be realized inside present apparatus circuit board package to pile highly integrated.
As shown in figure 3, variable connector conduction module 2 uses Panasonic PhotoMos switch AQW210S in the present embodiment, utilize
PhotoMos switch carries out inspection to fuel cell, and any channel switch detection is controllable.
As shown in figure 4, being the circuit diagram of monomer channel gating module 3.
Monomer voltage conditioning circuit 6 includes difference amplifier conditioning circuit, as shown in figure 5, difference amplifier conditioning circuit is defeated
Enter end to connect with monomer channel gating module 3, output end is connect with microcontroller 7.In the present embodiment, channel voltage is advised by vehicle
Differential partite transport puts INA148Q detection, and INA148Q difference amplifier has high cmrr, and wide input difference voltage ensure that height
The reliability of common mode input and the detection of pile transient negative pressure.Monomer voltage conditioning circuit 6 further includes voltage offset electric circuit, such as
Shown in Fig. 6, the output end of voltage offset electric circuit is connect with microcontroller 7.Voltage offset electric circuit can be changed by setting, is realized
Sampled voltage range is adjusted, and ± 2.5V, ± 5V, ± 10V voltage sample may be implemented respectively, while keeping sampling precision constant,
Sampling error < 5mV.
As shown in fig. 7, being the circuit diagram of microcontroller 7, the present embodiment specifically uses single-chip microcontroller MC9S08DZ60.
As shown in figure 8, the present apparatus further includes the temperature sensing circuit connecting with microcontroller 7, LMT84 temperature is specifically used
Acquisition module.
Communication processing module specifically uses CAN communication module 9, and circuit diagram is as shown in Figure 10.The external interface circuit of device
Figure is as shown in figure 11.
The working principle of the present apparatus are as follows:
Fuel cell voltage is connect by FPC conversion terminal with input processing module 1, is generated inside filtering appts
Harmonic component, the rush of current that protective device is not introduced by external loading；Input processing module 1 is connected to variable connector conducting mould
Block 2, variable connector conduction module 2 provide high common mode voltage endurance capability, meet high power fuel cell voltage detecting；Variable connector is led
Logical module 2 gates adjacent double switch by monomer channel gating module 3, is respectively connected to odd chanel gating module 5 and idol
Number channel gating module 4, odd chanel gating module 5 and even-numbered channels gating module 4 are determined by the I/O mouth of microcontroller 7
The channel of selection；Selected monomer channel voltage is connected to difference amplifier conditioning circuit to be adjusted, it is inclined by adjusting voltage
Circuits voltage realizes negative pressure acquisition, and the A/D conversion that difference amplifier conditioning circuit output voltage is connected to microcontroller 7 is connect
Mouthful, realize the acquisition and processing of monomer voltage.
The present apparatus can veneer realize 62 section monomer voltages measurement, bigger function can be met by the multiple present apparatus of simple cascade
The fuel cell pack monomer of rate detects, and realizes that data real-time update and state are fed back by CAN communication.
Claims (7)
1. a kind of configurable fuel cell voltage check device in channel characterized by comprising
Input processing module is connect, for filtering out harmonic component with the voltage output end of fuel cell；
Variable connector conduction module is connect with the input processing module, including multiple optocoupler combination switchs in parallel；
Monomer channel gating module is connect with the variable connector conduction module, including even-numbered channels gating module and odd number lead to
Road gating module；
Monomer voltage conditioning circuit is connect with monomer channel gating module；
Microcontroller connects with the monomer voltage conditioning circuit, even-numbered channels gating module and odd chanel gating module respectively
It connects；
Communication processing module is connect with the microcontroller；
Power module, for powering to component each in device.
2. a kind of configurable fuel cell voltage check device in channel according to claim 1, which is characterized in that
It is connected between the input processing module and the voltage output end of fuel cell by flexible circuit board.
3. a kind of configurable fuel cell voltage check device in channel according to claim 1 or 2, feature exist
In the input processing module includes RC absorbing circuit.
4. a kind of configurable fuel cell voltage check device in channel according to claim 1, which is characterized in that
The monomer voltage conditioning circuit includes difference amplifier conditioning circuit, the input terminal and the list of the difference amplifier conditioning circuit
The connection of body channel gating module, output end are connect with the microcontroller.
5. a kind of configurable fuel cell voltage check device in channel according to claim 4, which is characterized in that
The monomer voltage conditioning circuit further includes voltage offset electric circuit, the output end of the voltage offset electric circuit and the microcontroller
Connection.
6. a kind of configurable fuel cell voltage check device in channel according to claim 1, which is characterized in that
It further include the temperature sensing circuit being connect with the microcontroller.
7. a kind of configurable fuel cell voltage check device in channel according to claim 1, which is characterized in that
The Communication processing module includes CAN communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920414417.0U CN209607851U (en) | 2019-03-29 | 2019-03-29 | A kind of fuel cell voltage check device that channel is configurable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920414417.0U CN209607851U (en) | 2019-03-29 | 2019-03-29 | A kind of fuel cell voltage check device that channel is configurable |
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| CN209607851U true CN209607851U (en) | 2019-11-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247085A (en) * | 2019-03-29 | 2019-09-17 | 上海楞次新能源汽车科技有限公司 | A kind of fuel cell voltage check device that channel is configurable |
| CN111426964A (en) * | 2020-04-29 | 2020-07-17 | 成都极空科技有限公司 | Battery pack voltage acquisition circuit based on MOS (metal oxide semiconductor) tube gating matrix |
| CN113451596A (en) * | 2020-03-27 | 2021-09-28 | 未势能源科技有限公司 | Fuel cell system and vehicle |
-
2019
- 2019-03-29 CN CN201920414417.0U patent/CN209607851U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247085A (en) * | 2019-03-29 | 2019-09-17 | 上海楞次新能源汽车科技有限公司 | A kind of fuel cell voltage check device that channel is configurable |
| CN113451596A (en) * | 2020-03-27 | 2021-09-28 | 未势能源科技有限公司 | Fuel cell system and vehicle |
| CN113451596B (en) * | 2020-03-27 | 2022-12-23 | 未势能源科技有限公司 | Fuel cell system and vehicle |
| CN111426964A (en) * | 2020-04-29 | 2020-07-17 | 成都极空科技有限公司 | Battery pack voltage acquisition circuit based on MOS (metal oxide semiconductor) tube gating matrix |
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