CN111929503A - Insulation resistance testing device and method for fuel cell test - Google Patents
Insulation resistance testing device and method for fuel cell test Download PDFInfo
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- CN111929503A CN111929503A CN202010822662.2A CN202010822662A CN111929503A CN 111929503 A CN111929503 A CN 111929503A CN 202010822662 A CN202010822662 A CN 202010822662A CN 111929503 A CN111929503 A CN 111929503A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/025—Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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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 invention discloses an insulation impedance testing device and method used in fuel cell testing, comprising feedback type electronic load AC output, feedback type electronic load and insulation monitor, wherein two wiring ports of the feedback type electronic load AC output are connected with a wiring terminal of the feedback type electronic load through a connected power cord, one side of the front side of the feedback type electronic load is fixedly provided with a feedback type electronic load input cathode, the other side of the front side of the feedback type electronic load is fixedly provided with a feedback type electronic load input anode, the insulation monitor is arranged in the feedback type electronic load, a high-voltage sampling cathode of the insulation monitor is communicated with the feedback type electronic load input cathode through a first connecting wire, the insulation monitor is arranged in the feedback type electronic load, and the integration number of fuel cell testing racks is reduced through a CAN operation interface, the redundancy degree of the equipment is reduced, and the stability of the fuel cell test bench is improved.
Description
Technical Field
The invention relates to an insulation resistance testing device, in particular to an insulation resistance testing device and method used for testing a fuel cell, and belongs to the technical field of fuel cell testing devices.
Background
With the great advocation of energy conservation and environmental protection, new energy electric automobiles will be more and more common in life due to the advantages of energy conservation and no emission. Compared with the traditional internal combustion engine automobile, the electric automobile adopts an electric driving system, high voltage exists inside the electric automobile, the high voltage exists and can relate to the overall insulation examination, and particularly, the overall insulation performance of the electric automobile is possibly reduced under the conditions that the service life of the automobile is prolonged and the system runs under the environmental changes such as vibration, temperature, humidity and the like. Such changes will endanger the safety of users and influence the operation of automobiles, so the electric automobile insulation performance assessment method is very important for the internal electric insulation performance assessment of the electric automobiles, the insulation performance of the automobiles is ensured, and the safety in use and the reliable operation are guaranteed.
At present, the energy supply of the new energy electric automobile has two modes, namely a vehicle-mounted power battery pack and a vehicle-mounted fuel battery which is vigorously supported by the recent country. The insulativity of the output of the fuel cell is directly related to the insulativity of a platform of the whole vehicle, so that fuel cell manufacturers pay extra attention to the insulativity of the output of the fuel cell to the ground in the development and production test links of the fuel cell. Often, in reality, the integrated test equipment and the sampling equipment are mounted on the test bench of a fuel cell manufacturer too complicated, such as a DCDC converter, an air compressor, a fuel cell engine, a feedback electronic load and various parameter acquisition sensors, and a customer may encounter the complex integration of a test system in actual use. Under the condition, other instrument testing instruments are added, so that the complexity and the integration difficulty of the whole testing bench can be increased, and therefore, the color scheme of the insulation monitor is integrated in the feedback type load.
In summary, in the process of implementing the present invention, the inventors found that at least the following problems in the prior art are not solved:
(1) a user buys the insulation detector and adds the insulation detector on the test bench, so that the bench is messy;
(2) when a user needs to know that the insulation resistance is large under the current test condition, a single upper computer display interface is needed to communicate with the insulation monitor to read the resistance value, so that the operation of the actual user is complicated;
(3) the added insulation monitor needs to be added with a communication line needing the insulation monitor in a power supply line, so that the stability is poor;
(4) the multiple monitoring alarm functions of one stand easily cause the confusion of the alarm of the user.
Disclosure of Invention
The present invention is directed to an insulation resistance testing apparatus and method for testing a fuel cell, so as to solve the problems of the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an insulation resistance testing arrangement for during fuel cell test, includes feedback type electronic load alternating current output, feedback type electronic load and insulation monitor, two wiring ports of feedback type electronic load alternating current output are connected with feedback type electronic load's wiring end through the power cord of connecting, feedback type electronic load's internally mounted has insulation monitor.
As a preferred technical solution of the present invention, a feedback-type electronic load input negative electrode is fixedly disposed on one side of the front surface of the feedback-type electronic load.
As a preferred technical solution of the present invention, the feedback-type electronic load input anode is fixedly disposed on the other side of the front surface of the feedback-type electronic load.
As a preferred technical scheme of the present invention, the feedback-type electronic load input negative electrode and the feedback-type electronic load input positive electrode are both made of copper bars.
As a preferred technical solution of the present invention, the high-voltage sampling negative electrode of the insulation monitor is connected to the feedback-type electronic load input positive electrode through a first connection line, and the high-voltage sampling positive electrode of the insulation monitor is connected to the feedback-type electronic load input positive electrode through a second connection line.
As a preferred technical solution of the present invention, the low voltage power supply terminal of the insulation monitor is connected to the auxiliary power supply terminal inside the feedback type electronic load through a third connection line.
As a preferred technical solution of the present invention, a CAN operation interface is fixedly disposed at a top end of the feedback type electronic load.
As a preferred embodiment of the present invention, a method for testing insulation resistance in a fuel cell test, the method includes the steps of:
s1: during testing, the fuel cell, the two twisted-pair shielding wires, the feedback type electronic load alternating current output and the feedback type electronic load are placed on a workbench together, then one end of each twisted-pair shielding wire is connected with the input negative electrode of the feedback type electronic load and the input positive electrode of the feedback type electronic load, and the other end of each twisted-pair shielding wire is correspondingly connected with the positive electrode and the negative electrode of the fuel cell;
s2: the low-voltage power supply end of the insulation monitor is connected with an auxiliary power supply end in the feedback type electronic load through a third connecting wire to supply voltage and current required by the insulation monitor;
s3: the feedback type electronic load input cathode and the feedback type electronic load input cathode are connected through the first connecting wire and the second connecting wire, so that the insulation monitor CAN monitor the insulation impedance of the fuel cell to the ground and the ground in the testing process, in addition, the acquired impedance value to the ground and the acquired impedance value to the ground are transmitted to a CAN operation interface at the top end of the feedback type electronic load through the twisted pair shielding wire, and the insulation impedance is displayed on the feedback type electronic load.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the insulation impedance testing device and method for testing the fuel cell, the insulation monitor is arranged in the feedback type electronic load, and the CAN operation interface is arranged, so that the integration quantity of the fuel cell testing rack is reduced, the redundancy degree of equipment is reduced, the stability of the fuel cell testing rack is improved, the operation complexity of a user is reduced, alarm sources are not easily confused, and the practicability is high.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic circuit diagram of the apparatus of the present invention.
In the figure: 1. feedback type electronic load alternating current output; 2. a feedback-type electronic load; 3. a CAN operation interface; 4. a feedback type electronic load input negative electrode; 5. a feedback type electronic load input anode; 6. a power line; 7. an insulation monitor; 8. a first connecting line; 9. a second connecting line; 10. and a third connecting line.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a device and a method for testing insulation resistance of a fuel cell, which comprises:
according to the figure 1, the device comprises a feedback type electronic load alternating current output 1 and a feedback type electronic load 2, two wiring ports of the feedback type electronic load alternating current output 1 are connected with wiring terminals of the feedback type electronic load 2 through a connected power cord 6, one side of the front surface of the feedback type electronic load 2 is fixedly provided with a feedback type electronic load input cathode 4, the feedback type electronic load input cathode 4 is conveniently connected with a cathode of a fuel cell, the other side of the front surface of the feedback type electronic load 2 is fixedly provided with a feedback type electronic load input anode 5, the feedback type electronic load input cathode 4 and the feedback type electronic load input anode 5 are both made of copper bars, the feedback type electronic load input cathode 4 and the feedback type electronic load input anode 5 made of the copper bars have good conductive performance, the current loss is reduced, and the CAN operation interface 3 is fixedly arranged at the top end of the feedback type electronic load 2, so that the insulation resistance value is convenient to display, and a user CAN visually know the insulation resistance value.
According to the figure 2, the device comprises a feedback type electronic load, an insulation monitor 7 is arranged in the feedback type electronic load 2, a high-voltage sampling cathode of the insulation monitor 7 is communicated with a feedback type electronic load input anode 5 through a first connecting wire 8, a high-voltage sampling anode of the insulation monitor 7 is communicated with the feedback type electronic load input anode 5 through a second connecting wire 9, a low-voltage power supply end of the insulation monitor 7 is connected with an auxiliary power supply end in the feedback type electronic load 2 through a third connecting wire 10, the auxiliary power supply end in the feedback type electronic load 2 supplies power to the insulation monitor 7, so that the insulation monitor 7 CAN monitor the insulation impedance of a fuel cell to the ground and the ground during the test process, in addition, the acquired impedance value of the ground to the ground and the impedance value of the ground to the negative are transmitted to a CAN operation interface 3 at the top end of the feedback type electronic load 2 through a twisted pair shielding wire, thereby exhibiting an insulation resistance on the feedback type electronic load 2.
Before testing, a user firstly places the fuel cell, the two twisted pair shielding wires, the power line 6, the feedback type electronic load alternating current output 1 and the feedback type electronic load 2 at the same time on a workbench, a control panel of the feedback type electronic load alternating current output 1 faces the user, then one end of the two twisted pair shielding wires is connected with a feedback type electronic load input anode 5 and a feedback type electronic load input cathode 4 on the feedback type electronic load 2, and the other ends of the two twisted pair shielding wires are correspondingly connected with the anode and the cathode of the fuel cell; then the power line 6 is connected with the feedback type electronic load alternating current output 1 and the feedback type electronic load 2, when measurement is carried out, by starting a power switch of the feedback type electronic load alternating current output 1, voltage current passes through the feedback type electronic load 2, and a low-voltage power supply end of the insulation monitor 7 is connected with an auxiliary power supply end inside the feedback type electronic load 2 through a third connecting line 10 to supply the voltage current required by the insulation monitor 7; the feedback type electronic load input cathode 4 and the feedback type electronic load input anode 5 are connected through the first connecting wire 8 and the second connecting wire 9, so that the insulation monitor 7 CAN monitor the insulation impedance of the fuel cell to the ground and the ground in the testing process, and in addition, the collected impedance value to the ground and the collected impedance value to the ground are transmitted to the CAN operation interface 3 at the top end of the feedback type electronic load 2 through the twisted pair shielding wire, so that the insulation impedance is displayed on the feedback type electronic load 2.
In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience in describing the present invention and simplifying the description, but are not intended to indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.
In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly attached, detachably attached, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an insulation resistance testing arrangement for when fuel cell tests, includes feedback type electronic load alternating current output (1), feedback type electronic load (2) and insulation monitor (7), its characterized in that, two wiring ports of feedback type electronic load alternating current output (1) are connected with the wiring end of feedback type electronic load (2) through power cord (6) of connecting, the internally mounted of feedback type electronic load (2) has insulation monitor (7).
2. The insulation resistance testing device for use in a fuel cell test as recited in claim 1, wherein: and a feedback type electronic load input cathode (4) is fixedly arranged on one side of the front surface of the feedback type electronic load (2).
3. The insulation resistance testing device for use in a fuel cell test as recited in claim 1, wherein: and a feedback type electronic load input anode (5) is fixedly arranged on the other side of the front surface of the feedback type electronic load (2).
4. An insulation resistance testing device for use in a fuel cell test according to claim 2 or 3, characterized in that: the feedback type electronic load input cathode (4) and the feedback type electronic load input anode (5) are both made of copper bars.
5. The insulation resistance testing device for use in a fuel cell test as recited in claim 1, wherein: the high-voltage sampling negative pole of insulating monitor (7) is put through with repayment type electronic load input positive pole (5) through first connecting wire (8), the high-voltage sampling positive pole of insulating monitor (7) is put through with repayment type electronic load input positive pole (5) through second connecting wire (9).
6. The insulation resistance testing device for use in a fuel cell test as recited in claim 1, wherein: and a low-voltage power supply end of the insulation monitor (7) is connected with an auxiliary power supply end inside the feedback type electronic load (2) through a third connecting wire (10).
7. The insulation resistance testing device for use in a fuel cell test as recited in claim 1, wherein: and a CAN operation interface (3) is fixedly arranged at the top end of the feedback type electronic load (2).
8. A method for insulation resistance testing during fuel cell testing, the method comprising the steps of:
s1: during testing, the fuel cell, the two twisted-pair shielding wires, the feedback type electronic load alternating current output (1) and the feedback type electronic load (2) are placed on a workbench together, then one end of each twisted-pair shielding wire is connected with a feedback type electronic load input anode (5) and a feedback type electronic load input cathode (4), and the other end of each twisted-pair shielding wire is correspondingly connected with the anode and the cathode of the fuel cell;
s2: the feedback type electronic load alternating current output (1) and the feedback type electronic load (2) are connected through a power line (6), then a power switch of the feedback type electronic load alternating current output (1) is started, voltage and current pass through the feedback type electronic load (2), and a low-voltage power supply end of an insulation monitor (7) is connected with an auxiliary power supply end inside the feedback type electronic load (2) through a third connecting line (10) and supplies the voltage and current required by the insulation monitor (7);
s3: the feedback type electronic load input cathode (4) and the feedback type electronic load input anode (5) are connected through a first connecting wire (8) and a second connecting wire (9), so that the insulation monitor (7) CAN monitor the insulation impedance of the fuel cell to the ground and the ground in the testing process, and in addition, the collected impedance value to the ground and the collected impedance value to the ground are transmitted to the CAN operation interface (3) at the top end of the feedback type electronic load (2) through the twisted pair shielding wire, and the insulation impedance is displayed on the feedback type electronic load (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010822662.2A CN111929503B (en) | 2020-08-17 | 2020-08-17 | Insulation impedance testing device and method for fuel cell testing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010822662.2A CN111929503B (en) | 2020-08-17 | 2020-08-17 | Insulation impedance testing device and method for fuel cell testing |
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| CN111929503A true CN111929503A (en) | 2020-11-13 |
| CN111929503B CN111929503B (en) | 2023-07-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116818330A (en) * | 2023-06-28 | 2023-09-29 | 北京亿华通科技股份有限公司 | Automatic static testing device for fuel cell engine |
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