CN220671612U - Device for calibrating fuel cell impedance measurement - Google Patents
Device for calibrating fuel cell impedance measurement Download PDFInfo
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- CN220671612U CN220671612U CN202322239672.5U CN202322239672U CN220671612U CN 220671612 U CN220671612 U CN 220671612U CN 202322239672 U CN202322239672 U CN 202322239672U CN 220671612 U CN220671612 U CN 220671612U
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- impedance
- probe
- fuel cell
- impedance measurement
- calibrating
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- 238000002847 impedance measurement Methods 0.000 title claims abstract description 34
- 239000000446 fuel Substances 0.000 title claims abstract description 21
- 239000000523 sample Substances 0.000 claims abstract description 48
- 230000007246 mechanism Effects 0.000 claims abstract description 42
- 230000007306 turnover Effects 0.000 claims abstract description 18
- 230000008901 benefit Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
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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
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model provides an apparatus for calibrating fuel cell impedance measurements, comprising: the probe comprises a turnover mechanism, a probe mechanism and a positioning plate; when the impedance measuring device is placed on the positioning plate, the probe mechanism is driven by the turnover mechanism to collect the measuring points of the impedance measuring device. All measuring points of the impedance measuring device are acquired by arranging the turnover mechanism to drive the probe mechanism, so that the aim of calibrating the precision of the impedance measuring device in a multi-channel mode is fulfilled.
Description
Technical Field
The utility model belongs to the technical field of fuel cell measurement, and particularly relates to a device for calibrating fuel cell impedance measurement.
Background
High power fuel cells are typically made up of hundreds of cells in series, with each individual cell normally directly affecting the overall cell. The impedance can reflect the state of health of the battery, and can be the key to determine the charge and discharge current resistance of the battery, and in order to monitor the running state in real time, the impedance needs to be measured so that the impedance of each single battery is equal or close. Impedance measurement is therefore of great importance in battery production, development and use. However, if the accuracy of the impedance measurement tool or impedance measurement device is inaccurate, the impedance measurement may deviate, which affects the evaluation of the battery performance.
The prior art has the following defects:
(1) Most of the prior art cannot calibrate the precision of the impedance measurement device in a multi-channel mode at the same time;
(2) Impedance measuring devices with different channel numbers are often needed for different power products, and the prior art cannot adapt to the product requirements with different impedance channel numbers;
(3) When impedance of the impedance measuring device is measured, the pins are usually welded and fixed on the circuit board, so that flexibility is poor.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides a device for calibrating the impedance measurement of a fuel cell, which at least partially solves the problem that the accuracy of the impedance measurement device cannot be calibrated simultaneously in multiple channels in the prior art.
An embodiment of the present utility model provides an apparatus for calibrating fuel cell impedance measurements, comprising: the probe comprises a turnover mechanism, a probe mechanism and a positioning plate;
when the impedance measuring device is placed on the positioning plate, the probe mechanism is driven by the turnover mechanism to collect the measuring points of the impedance measuring device.
Optionally, the turnover mechanism comprises a turnover wrench and a fixed plate, and the turnover wrench is connected with the fixed plate.
Optionally, the fixing plate is provided with a contact post.
Optionally, the probe mechanism includes a spring probe and a needle plate, the spring probe is disposed on the needle plate, and the spring probe penetrates the needle plate.
Optionally, the device further comprises a base, and the positioning plate and the turnover mechanism are fixedly connected with the base.
Optionally, the probe mechanism further comprises an impedance acquisition device, and the impedance acquisition device is electrically connected with the probe mechanism.
Optionally, the impedance acquisition device is electrically connected with the upper computer through a CAN line.
Optionally, the probe mechanism further comprises a direct current circuit, wherein the direct current circuit is electrically connected with the probe mechanism and is used for applying current disturbance to the probe mechanism.
According to the device for calibrating the impedance measurement of the fuel cell, provided by the utility model, the turnover mechanism is arranged to drive the probe mechanism to collect all measurement points of the impedance measurement device, so that the aim of calibrating the accuracy of the impedance measurement device in a multi-channel manner is fulfilled.
Drawings
The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular descriptions of exemplary embodiments of the utility model as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the utility model.
FIG. 1 is a schematic diagram of an apparatus for calibrating fuel cell impedance measurement according to an embodiment of the present utility model;
fig. 2 is a flowchart of a calibration method for calibrating fuel cell impedance measurement according to an embodiment of the present utility model.
Detailed Description
Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
It should be understood that the following detailed description and specific examples, while indicating preferred embodiments of the utility model, are given by way of illustration only, since various changes and modifications within the spirit and scope of the utility model will become apparent to those skilled in the art from this disclosure. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present disclosure, one skilled in the art will appreciate that one aspect described herein may be implemented independently of any other aspect, and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. In addition, such apparatus may be implemented and/or such methods practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
It should also be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the illustrations, not according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
In addition, in the following description, specific details are provided in order to provide a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.
An apparatus for calibrating fuel cell impedance measurements, comprising: the probe comprises a turnover mechanism, a probe mechanism and a positioning plate;
when the impedance measuring device is placed on the positioning plate, the probe mechanism is driven by the turnover mechanism to collect the measuring points of the impedance measuring device.
Optionally, the turnover mechanism comprises a turnover wrench and a fixed plate, and the turnover wrench is connected with the fixed plate.
Optionally, the fixing plate is provided with a contact post.
Optionally, the probe mechanism includes a spring probe and a needle plate, the spring probe is disposed on the needle plate, and the spring probe penetrates the needle plate.
Optionally, the device further comprises a base, and the positioning plate and the turnover mechanism are fixedly connected with the base.
Optionally, the probe mechanism further comprises an impedance acquisition device, and the impedance acquisition device is electrically connected with the probe mechanism.
Optionally, the impedance acquisition device is electrically connected with the upper computer through a CAN line.
Optionally, the probe mechanism further comprises a direct current circuit, wherein the direct current circuit is electrically connected with the probe mechanism and is used for applying current disturbance to the probe mechanism.
As shown in fig. 1, the turning wrench is a mechanical turning wrench, and an automatic turning wrench can be also adopted, in this embodiment, when the mechanical turning wrench 1 is controlled, flexible connection and disconnection between the spring probe 3 and the impedance measuring device can be realized, when the mechanical turning wrench 1 is turned down, the contact post 7 on the fixing plate 2 presses down the needle plate 4, so that the spring probe 3 of the needle plate 4 is connected with the impedance measuring device, and otherwise, the spring probe 3 is disconnected from the impedance measuring device when the mechanical turning wrench 1 is turned up. The impedance measuring device is placed between the needle plate 4 and the positioning plate 5, the specific position of the impedance measuring device is determined by the positioning plate 5 and the spring probes 3, each channel of the spring probes 3 corresponds to a point, and the position of the corresponding channel of the impedance measuring device is determined by the position of the point. Meanwhile, products with different powers have different impedance acquisition values, and impedance measuring devices with different channel numbers can be replaced in real time. An impedance acquisition device is placed in the base 6, the spring probe 3 is connected with DC (direct current) through a lead wire so as to apply current disturbance, impedance is convenient to measure, a CAN wire is led out of the base 6 and is connected with an upper computer, acquired impedance data CAN be visualized, and the impedance data CAN be displayed on a computer screen in real time.
As shown in fig. 2, the calibration method includes determining a placement position of the impedance measurement device by the positioning board 5, that is, placing the impedance measurement device on the positioning board 5, and replacing the impedance measurement device with different channel numbers according to actual requirements. Next, in order to facilitate the acquisition of the impedance value of each channel impedance measuring device, a wire lead connected to the spring probe 3 is connected to DC to apply a current disturbance. In addition, the base is internally provided with a multi-channel impedance acquisition device, the impedance acquisition device is connected with the CAN line and the upper computer, and the impedance values of all channels CAN be displayed on the upper computer through the acquired voltage values and the applied current disturbance. After all the wires are connected, the power supply is turned on. The calibration measuring device controls the connection of the impedance measuring device of the spring probe 3 by controlling the up-and-down motion of the mechanical overturning wrench 1, when the mechanical overturning wrench 1 is overturned downwards, the impedance measuring device of the spring probe 3 is connected, impedance data of all channels of the impedance measuring device at the moment can be measured, and the data are visually displayed on an upper computer. Comparing the data with factory data of each channel of the impedance measurement device, and if the impedance error precision of all channels is within 2%, indicating that the impedance precision of the impedance measurement device is calibrated; otherwise, if a certain channel does not meet the requirement, the impedance adjustment of the impedance measuring device of the corresponding channel is retested until the error precision requirement is met.
The technical scheme disclosed by the embodiment has the beneficial effects that:
(1) The multi-channel impedance precision of the impedance measurement device can be calibrated simultaneously, and the problems that the number of acquisition channels of the existing product is insufficient and the multi-channel precision of the impedance measurement device cannot be calibrated are solved;
(2) The requirements of different power product requirements of the fuel cell on the measurement channel can be met;
(3) The flexibility of connecting or disconnecting the measurement pins to or from the impedance measurement device can be improved.
The basic principles of the present utility model have been described above in connection with specific embodiments, however, it should be noted that the advantages, benefits, effects, etc. mentioned in the present utility model are merely examples and not intended to be limiting, and these advantages, benefits, effects, etc. are not to be considered as essential to the various embodiments of the present utility model. Furthermore, the specific details disclosed herein are for purposes of illustration and understanding only, and are not intended to be limiting, as the utility model is not necessarily limited to practice with the above described specific details.
In the present utility model, words such as "comprising," "including," "having," and the like are words of openness, meaning "including but not limited to," and are used interchangeably therewith. The terms "or" and "as used herein refer to and are used interchangeably with the term" and/or "unless the context clearly indicates otherwise. The term "such as" as used herein refers to, and is used interchangeably with, the phrase "such as, but not limited to.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the utility model. Thus, the present utility model is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit embodiments of the utility model to the form disclosed herein. Although a number of example aspects and embodiments have been discussed above, a person of ordinary skill in the art will recognize certain variations, modifications, alterations, additions, and subcombinations thereof.
Claims (8)
1. An apparatus for calibrating fuel cell impedance measurements, comprising: the probe comprises a turnover mechanism, a probe mechanism and a positioning plate;
when the impedance measuring device is placed on the positioning plate, the probe mechanism is driven by the turnover mechanism to collect the measuring points of the impedance measuring device.
2. The apparatus for calibrating fuel cell impedance measurement of claim 1 wherein the flipping mechanism comprises a flipping wrench and a stationary plate, the flipping wrench and stationary plate being connected.
3. The apparatus for calibrating fuel cell impedance measurement according to claim 2, wherein contact posts are provided on the stationary plate.
4. The apparatus for calibrating fuel cell impedance measurement of claim 1 wherein the probe mechanism comprises a spring probe and a needle plate, the spring probe being disposed on the needle plate and the spring probe extending through the needle plate.
5. The apparatus for calibrating fuel cell impedance measurement of claim 1 further comprising a base, wherein the locating plate and the flipping mechanism are both fixedly connected to the base.
6. The apparatus for calibrating fuel cell impedance measurement of claim 1 further comprising an impedance acquisition device electrically connected to the probe mechanism.
7. The device for calibrating fuel cell impedance measurement according to claim 6, wherein the impedance acquisition device is electrically connected to an upper computer via a CAN line.
8. The apparatus for calibrating fuel cell impedance measurement according to claim 1, further comprising a dc circuit electrically connected to the probe mechanism, the dc circuit for applying a current disturbance to the probe mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322239672.5U CN220671612U (en) | 2023-08-18 | 2023-08-18 | Device for calibrating fuel cell impedance measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322239672.5U CN220671612U (en) | 2023-08-18 | 2023-08-18 | Device for calibrating fuel cell impedance measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220671612U true CN220671612U (en) | 2024-03-26 |
Family
ID=90328465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322239672.5U Active CN220671612U (en) | 2023-08-18 | 2023-08-18 | Device for calibrating fuel cell impedance measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220671612U (en) |
-
2023
- 2023-08-18 CN CN202322239672.5U patent/CN220671612U/en active Active
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