CN221352820U - CVM controller - Google Patents
CVM controller Download PDFInfo
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- CN221352820U CN221352820U CN202323170263.0U CN202323170263U CN221352820U CN 221352820 U CN221352820 U CN 221352820U CN 202323170263 U CN202323170263 U CN 202323170263U CN 221352820 U CN221352820 U CN 221352820U
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- Prior art keywords
- voltage
- power supply
- cell stack
- fuel cell
- independent power
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- 239000000446 fuel Substances 0.000 claims abstract description 32
- 238000002955 isolation Methods 0.000 abstract description 12
- 238000007689 inspection Methods 0.000 abstract description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Fuel Cell (AREA)
Abstract
The utility model provides a CVM controller, comprising: the system comprises a battery acquisition chip for acquiring the voltage of the fuel cell stack and an isolated independent power supply, wherein the voltage acquisition end of the battery acquisition chip is respectively connected with the voltage output ends of a plurality of groups of electric stack layers. The CVM controller mainly comprises a battery acquisition chip for acquiring the voltage of the fuel cell stack and an isolation independent power supply, wherein the isolation independent power supply is a 12V isolation independent power supply, and the single-chip output voltage of a cell stack electric layer is lower and is generally about 0.7-1.2V, so that the condition that the chip does not work due to insufficient power supply voltage when the voltage of the fuel cell stack for acquiring unknown paths is acquired, however, the 12V isolation independent power supply is adopted to supply power for the battery acquisition chip in the scheme, the battery acquisition chip is not limited to the use of the voltage of the fuel cell stack for power supply, the inspection of the fuel cell stack with any path number can be realized, and the data is accurate.
Description
Technical Field
The utility model relates to the technical field of hydrogen fuel cell stack inspection, in particular to a CVM controller.
Background
The hydrogen fuel cell stack inspection equipment is called CVM for short, wherein the CVM is used for collecting a cell stack single voltage (or total cell stack voltage) signal and sending the signal to a fuel cell stack system controller, and the working state of the fuel cell stack is judged through the inspection of the single voltage signal.
The health state of the fuel cell stack is mainly reflected on the single voltage, and the single voltage of the fuel cell stack can be changed due to the factors of bad operation conditions such as overdry, overwet, gas deficiency and the like, mechanical damage and the like. Therefore, if the state of the fuel cell stack is to be diagnosed or the fuel cell stack system control is performed depending on the cell voltage, it is necessary to know the cell voltage of the fuel cell stack. Therefore, it is particularly important that the fuel cell stack is provided with the CVM, and the core fuel cell stack voltage acquisition chip of the CVM at the present stage is in short supply and high in price, so that the traditional battery acquisition chip (MT 9803) is adopted to replace the cell stack voltage acquisition chip as the core of the CVM, so that the purchase cost is reduced.
The MT9803 has limitation on the voltage of the fuel cell stack to be collected (the power supply voltage of the power supply of the chip is greater than or equal to the collection voltage of the fuel cell stack), so the MT9803 can only collect the fuel cell stack voltage with the known number of paths, and the chip does not work due to insufficient power supply voltage when the unknown number of paths are collected, and can not collect the complete stack voltage when the power supply voltage is smaller than the collection voltage of the fuel cell stack. MT9803 has a minimum start-up voltage of about 7V (manual parameter minimum voltage 10V), and a CVM requires at least 4 MT9803 chips, each of which can collect 12 voltages. At present, the number of the pile strings is variable, and if the pile consists of 38 groups, the last chip can acquire 2 groups. The starting voltage of the MT9803 chip cannot be reached, so that the last chip cannot work, and the last two groups of voltages of the electric pile cannot be acquired.
For this purpose, a CVM controller is proposed.
Disclosure of utility model
The utility model aims to solve the problems in the background art and provides a CVM controller.
The specific technical scheme is as follows:
a CVM controller, comprising:
The battery acquisition chip is used for acquiring the voltage of the fuel cell stack, and the voltage acquisition ends of the battery acquisition chip are respectively connected with the voltage output ends of a plurality of groups of electric stack layers;
The isolated independent power supply is connected in series between the voltage acquisition end of the battery acquisition chip and the voltage output end of the galvanic pile layer.
The above CVM controller, wherein: the type of the battery acquisition chip is MT9803 or MT9804 or MT9813 or MT9811 or MT9805.
The above CVM controller, wherein: the isolated independent power supply is a 12V isolated independent power supply.
The above CVM controller, wherein: the galvanic pile electrical layers are provided with 38 groups.
The above CVM controller, wherein: the voltage acquisition end of the battery acquisition chip is connected with the voltage output end of the electric pile electric layer through a wire.
The above CVM controller, wherein: the isolated independent power supply is connected in series on the wire.
The utility model has the following beneficial effects:
The CVM controller mainly comprises a battery acquisition chip for acquiring the voltage of the fuel cell stack and an isolation independent power supply, wherein the isolation independent power supply is a 12V isolation independent power supply, and the single-chip output voltage of a cell stack electric layer is lower and is generally about 0.7-1.2V, so that the condition that the chip does not work due to insufficient power supply voltage when the voltage of the fuel cell stack for acquiring unknown paths is acquired, however, the 12V isolation independent power supply is adopted to supply power for the battery acquisition chip in the scheme, the battery acquisition chip is not limited to the use of the voltage of the fuel cell stack for power supply, the inspection of the fuel cell stack with any path number can be realized, and the data is accurate.
Drawings
Fig. 1 is a schematic structural diagram of a CVM controller according to an embodiment of the present utility model.
Detailed Description
The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.
Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present utility model and simplifying the description, rather than indicating or implying that the apparatus or elements being referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration and should not be construed as limiting the present patent, and that the specific meaning of the terms described above may be understood by those of ordinary skill in the art according to specific circumstances.
In the description of the present utility model, unless explicitly stated and limited otherwise, the term "coupled" or the like should be interpreted broadly, as it may be fixedly coupled, detachably coupled, or integrally formed, as indicating the relationship of components; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two parts or interaction relationship between the two parts. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Examples
The CVM controller provided in this embodiment, as shown in fig. 1, includes: the battery acquisition chip is used for acquiring the voltage of the fuel cell stack and isolating an independent power supply.
The voltage acquisition ends of the battery acquisition chips are respectively connected with the voltage output ends of a plurality of groups of galvanic pile layers, and the types of the battery acquisition chips are MT9803 or MT9804 or MT9813 or MT9811 or MT9805;
The isolated independent power supply is connected in series between the voltage acquisition end of the battery acquisition chip and the voltage output end of the electric pile electric layer, the isolated independent power supply is 12V isolated independent power supply, and 38 groups of electric pile electric layers are arranged.
Specifically, in the present embodiment: the voltage acquisition end of the battery acquisition chip is connected with the voltage output end of the galvanic pile layer through a wire, and the isolated independent power supply is connected in series on the wire.
In summary, the CVM controller provided in this embodiment has the following advantages:
The CVM controller mainly comprises a battery acquisition chip for acquiring the voltage of the fuel cell stack and an isolation independent power supply, wherein the isolation independent power supply is a 12V isolation independent power supply, and because the single-chip output voltage of the fuel cell stack layer is lower and is generally about 0.7-1.2V, the condition that the chip does not work due to insufficient power supply voltage can occur when the voltage of the fuel cell stack with unknown path number is acquired, however, the 12V isolation independent power supply is adopted in the scheme to supply power to the battery acquisition chip, so that the battery acquisition chip is not limited to the power supply by using the voltage of the fuel cell stack any more, the inspection of the fuel cell stack with any path number can be realized, and the data is accurate.
The foregoing is merely illustrative of the preferred embodiments of the present utility model and is not intended to limit the embodiments and scope of the present utility model, and it should be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present utility model, and are intended to be included in the scope of the present utility model.
Claims (1)
1. A CVM controller, comprising:
The battery acquisition chip is used for acquiring the voltage of the fuel cell stack, and the voltage acquisition ends of the battery acquisition chip are respectively connected with the voltage output ends of a plurality of groups of electric stack layers;
The isolated independent power supply is connected in series between the voltage acquisition end of the battery acquisition chip and the voltage output end of the galvanic pile layer;
the type of the battery acquisition chip is MT9803 or MT9804 or MT9813 or MT9811 or MT9805;
The isolated independent power supply is a 12V isolated independent power supply;
the galvanic pile electric layer is provided with 38 groups;
The voltage acquisition end of the battery acquisition chip is connected with the voltage output end of the electric pile electric layer through a wire;
The isolated independent power supply is connected in series on the wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323170263.0U CN221352820U (en) | 2023-11-23 | 2023-11-23 | CVM controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323170263.0U CN221352820U (en) | 2023-11-23 | 2023-11-23 | CVM controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221352820U true CN221352820U (en) | 2024-07-16 |
Family
ID=91839683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323170263.0U Active CN221352820U (en) | 2023-11-23 | 2023-11-23 | CVM controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221352820U (en) |
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2023
- 2023-11-23 CN CN202323170263.0U patent/CN221352820U/en active Active
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