CN117434367A - High-low voltage coupling test equipment for battery pack - Google Patents
High-low voltage coupling test equipment for battery pack Download PDFInfo
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- CN117434367A CN117434367A CN202311383793.5A CN202311383793A CN117434367A CN 117434367 A CN117434367 A CN 117434367A CN 202311383793 A CN202311383793 A CN 202311383793A CN 117434367 A CN117434367 A CN 117434367A
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- 238000012360 testing method Methods 0.000 title claims abstract description 43
- 230000008878 coupling Effects 0.000 title claims abstract description 34
- 238000010168 coupling process Methods 0.000 title claims abstract description 34
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000013307 optical fiber Substances 0.000 claims description 19
- 238000005192 partition Methods 0.000 claims description 17
- 238000012544 monitoring process Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 239000003989 dielectric material Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
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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
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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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
- G01R1/18—Screening arrangements against electric or magnetic fields, e.g. against earth's field
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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]
- G01R31/3644—Constructional arrangements
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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]
- G01R31/378—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4285—Testing apparatus
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- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses high-low voltage coupling test equipment for a battery pack, which relates to the technical field of high-low voltage coupling test for the battery pack, and now proposes a scheme that a shielding shell is internally provided with a ground plane, the top of the ground plane is provided with a low-coherence dielectric constant material, the low-coherence dielectric constant material reduces the dielectric constant of a dielectric material used in an integrated circuit, can reduce the leakage current of the integrated circuit, reduces the capacitance effect between leads and reduces the heating of the integrated circuit, and the top of the low-coherence dielectric constant material is provided with a tested piece; the invention ensures the testing environment through various processes, avoids the influence caused by environmental factors in the testing process, ensures the accuracy and stability of the coupling test, ensures the stability of the test from the aspect of environment, and solves the problem of circuit interference to ensure more stable and accurate testing data through multidirectional power transmission processing from the aspect of power processing.
Description
Technical Field
The invention relates to the technical field of high-low voltage coupling test of battery packs, in particular to high-low voltage coupling test equipment of a battery pack.
Background
A battery pack refers to a cup, tank or other container or part of a space of a composite container that contains an electrolyte solution and metal electrodes to generate an electric current, and can convert chemical energy into electrical energy. Has a positive electrode and a negative electrode.
In the battery pack, a high-voltage circuit and a low-voltage circuit coexist, interference can be generated in the working process of the high-voltage circuit and the low-voltage circuit, and the interference generated by the high-voltage circuit is stronger. The high-voltage circuit has large external interference but strong anti-interference performance, and the low-voltage circuit has weak external interference but weak anti-interference performance. Therefore, electromagnetic problems of the fuel cell system are often caused by that interference coupling of operation of the high-voltage circuit enters the high-voltage circuit, so that how to test the high-low voltage coupling mechanism of the battery pack becomes one of research directions of researchers.
In the prior art, for example, the Chinese patent number is: the test system of the high-low voltage coupling mechanism of the CN111308258B is characterized in that the test system of the high-low voltage coupling mechanism realizes the isolation of a high-voltage direct-current power supply, a load box and tested equipment through a first high-voltage isolation device and a second high-voltage isolation device respectively, avoids the influence of the interference of the high-voltage direct-current power supply and the load box on test results, realizes the isolation among a receiving device, the low-voltage direct-current power supply and the tested equipment through a low-voltage isolation device, avoids the influence of the interference of the receiving device and the low-voltage direct-current power supply on test results, and realizes the attenuation characteristic of the high-voltage interference coupling generated in the working process of a high-voltage circuit of the tested equipment after the high-voltage interference coupling of the tested equipment enters the low-voltage interference through the receiving device test, so that the high-low voltage coupling mechanism of the high-voltage circuit in the tested equipment is further researched, and the high-low-voltage coupling design of the high-voltage circuit is guided, thereby achieving the purpose of improving the overall electromagnetic compatibility performance of the tested equipment.
Although the above scheme has the advantages, the above scheme has the disadvantages that in the coupling test process, the test environment has a certain influence on the coupling test and can interfere with the test to influence the coupling test data, and the power transmission processing is processed through the high-voltage line impedance stabilizing network module, so that the high-voltage and low-voltage coupling test equipment for the battery pack is provided.
Disclosure of Invention
The invention provides high-low voltage coupling test equipment for a battery pack, which aims to solve the defects in the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a battery pack high-low voltage coupling test device, a shielding shell, a ground plane is arranged in the shielding shell, a low-coherence dielectric constant material is arranged at the top of the ground plane, the low-coherence dielectric constant material reduces the dielectric constant of a dielectric material used in an integrated circuit, can reduce the leakage current of the integrated circuit, reduces the capacitance effect between wires and reduces the heating of the integrated circuit, a tested piece is arranged at the top of the low-coherence dielectric constant material, a shielding box is arranged at the top of the ground plane, limits electromagnetic energy to a certain space range, is used for inhibiting metal bodies interfering with radiation and processes the conduction and the radiation so as to realize the device for providing a non-interfering test environment for the tested device, an impedance matching network module is arranged in the shielding box, and the output end of the impedance matching network module is electrically connected with a high-voltage circuit, the output end of the high-voltage circuit is electrically connected with the input end of the tested piece, two high-voltage artificial network modules are arranged in the shielding box, current clamps are arranged in the shielding box, the anode and the cathode of the impedance matching network module are respectively and electrically connected with the two high-voltage artificial network modules through electric connecting wires, the current clamps are sleeved on one of the electric connecting wires, two first loaders are arranged in the shielding box, the two first loaders are respectively and electrically connected with the high-voltage artificial network modules, a low-voltage load simulator is arranged on the ground plane and electrically connected with the tested piece, a low-voltage power supply and two low-voltage artificial network modules are arranged on the ground plane, two low-voltage supply wires are arranged between the low-voltage power supply and the two low-voltage artificial network modules, the positive electrode and the negative electrode of the low-voltage power supply are respectively and electrically connected with the two low-voltage artificial network modules through two low-voltage supply lines, the two low-voltage artificial network modules are electrically connected with a tested piece, a second loader is installed at the top of the ground plane, and the low-voltage artificial network modules electrically connected with the positive electrode of the low-voltage power supply are electrically connected with the second loader.
Preferably, a power line filter is fixed on the shielding shell, a high-voltage supply line is arranged between the power line filter and the two high-voltage artificial network modules and is electrically connected with the power line filter through the high-voltage supply line, a high-voltage power supply is arranged on one side of the shielding shell, the high-voltage power supply is electrically connected with the power line filter, two partition board connectors are fixed on the shielding shell, one partition board connector is provided with a coaxial cable and is electrically connected with the current clamp through the coaxial cable, a radio frequency switch is arranged on one side of the shielding shell, the radio frequency switch is electrically connected with one partition board connector, the low-voltage artificial network module electrically connected with the low-voltage negative electrode is electrically connected with the other partition board connector, a measuring instrument is arranged on one side of the shielding shell, and the measuring instrument is electrically connected with the other partition board connector.
Preferably, an optical fiber feed-through device is fixed on the shielding shell, an optical fiber is arranged between the optical fiber feed-through device and the low-voltage load simulator, and the optical fiber is electrically connected with the optical fiber feed-through device, a monitoring system is installed on one side of the shielding shell, and the monitoring system is electrically connected with the optical fiber feed-through device.
Preferably, one side of the ground plane is fixed with a plurality of ground strips, the other end of the ground strip is connected with the shielding shell, a plurality of devices on the ground plane are connected with the ground plane, and the ground plane leads to the shielding shell through the ground strips by grounding the voltage of the devices, so that the influence on the measuring environment caused by poor grounding is avoided.
Preferably, the two high-voltage artificial network modules are electrically connected with the shielding box in a grounding way, and the impedance matching network module is electrically connected with the shielding box in a grounding way.
Preferably, the measured piece is electrically connected with the ground plane in a grounding way, the shielding box is electrically connected with the ground plane in a grounding way, the low-voltage load simulator is electrically connected with the ground plane in a grounding way, the two low-voltage artificial network modules are electrically connected with the ground plane in a grounding way, and the low-voltage supply line electrically connected with the negative electrode of the low-voltage power supply is electrically connected with the ground plane through an external circuit.
Preferably, the connecting line between the low-voltage load simulator and the measured piece is arranged on the low-coherence dielectric constant material, and the high-voltage line is arranged on the low-coherence dielectric constant material.
Preferably, the high-voltage power supply, the radio frequency switch, the monitoring system, the measuring instrument and the current clamp are externally connected with an upper computer.
Compared with the prior art, the invention has the beneficial effects that: the influence that isolated environment brought has been ensured through the manifold processing to this application, has avoided the influence that the environmental factor brought in the testing process, has ensured the accuracy and the stability of coupling test, and this application has ensured the stability of test in addition from the environment, still from the electric power processing go up through diversified transmission of electricity processing, solves circuit interference and makes test data more stable and accurate.
Drawings
Fig. 1 is a schematic view of a first view angle structure of a high-low voltage coupling test device for a battery pack according to the present invention.
Fig. 2 is a schematic diagram of a second view angle structure of a battery pack high-low voltage coupling test device according to the present invention.
In the figure: 1. a measured piece; 2. a ground plane; 3. a low coherence dielectric constant material; 4. a current clamp; 6. a high voltage line; 7. a low voltage load simulator; 8. an impedance matching network module; 9. a low-voltage artificial network module; 10. a high-voltage artificial network module; 11. a low voltage supply line; 12. a high voltage supply line; 13. a low voltage power supply; 14. a shielding box; 15. a high voltage power supply; 16. a power line filter; 17. an optical fiber feedthrough; 18. a bulkhead connector; 19. a monitoring system; 20. a measuring instrument; 21. a coaxial cable; 22. an optical fiber; 23. a grounding strap; 24. a radio frequency switch; 25. a first loader; 26. a shielding housing; 27. and a second loader.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Example 1: referring to fig. 1-2: a battery pack high-low voltage coupling test device, a shielding shell 26, a ground plane 2 is installed in the shielding shell 26, a low-coherence dielectric constant material 3 is installed at the top of the ground plane 2, the low-coherence dielectric constant material reduces the dielectric constant of dielectric materials used in an integrated circuit, can reduce the leakage current of the integrated circuit, reduces the capacitance effect between wires, reduces the heating of the integrated circuit, a tested piece 1 is installed at the top of the low-coherence dielectric constant material 3, a shielding box 14 is installed at the top of the ground plane 2, electromagnetic energy is limited in a certain space range by the shielding box, a metal body for inhibiting radiation interference is used for conducting and radiating, so as to realize the device for providing a non-interference test environment for the tested device, an impedance matching network module 8 is installed in the shielding box 14, the output end of the impedance matching network module 8 is electrically connected with a high-voltage line 6, the output end of the high-voltage line 6 is electrically connected with the input end of the tested piece 1, two high-voltage artificial network modules 10 are installed in the shielding box 14, a current clamp 4 is arranged in the shielding box 14, the anode and the cathode of the impedance matching network module 8 are respectively electrically connected with the two high-voltage artificial network modules 10 through an electric connecting wire, the current clamp 4 is sleeved on one electric connecting wire, two first loaders 25 are installed in the shielding box 14, the two first loaders 25 are respectively electrically connected with the high-voltage artificial network modules 10, a low-voltage load simulator 7 is installed on the ground plane 2, the low-voltage load simulator 7 is electrically connected with the tested piece 1, a low-voltage power supply 13 and two low-voltage artificial network modules 9 are installed on the ground plane 2, two low-voltage supply wires 11 are arranged between the low-voltage power supply 13 and the two low-voltage artificial network modules 9, the positive electrode and the negative electrode of the low-voltage power supply 13 are respectively and electrically connected with the two low-voltage artificial network modules 9 through two low-voltage supply lines 11, the two low-voltage artificial network modules 9 are electrically connected with the tested piece 1, the second loader 27 is arranged at the top of the ground plane 2, the low-voltage artificial network modules 9 electrically connected with the positive electrode of the low-voltage power supply 13 are electrically connected with the second loader 27, the high-voltage lines and the low-voltage lines cannot cross, the distance is always kept to be 10-20CM, the distance between the tested piece and the low-voltage lines from the edge of the ground plane is required to be greater than 10CM, the lengths of the high-voltage lines parallel to the ground plane are 142-157CM, and the channel openings of the high-voltage lines at the two ends of the shielding boxes of the high-voltage impedance matching network modules are sealed by aluminum foil paper and grounded;
the power line filter 16 is fixed on the shielding shell 26, a high-voltage supply line 12 is arranged between the power line filter 16 and the two high-voltage artificial network modules 10 and is electrically connected with the power line filter 16 through the high-voltage supply line 12, a high-voltage power supply 15 is arranged on one side of the shielding shell 26, the high-voltage power supply 15 is electrically connected with the power line filter 16, two partition board connectors 18 are fixed on the shielding shell 26, a coaxial cable 21 is arranged between one partition board connector 18 and the current clamp 4 and is electrically connected with the current clamp 4 through the coaxial cable 21, a radio frequency switch 24 is arranged on one side of the shielding shell 26, the radio frequency switch 24 is electrically connected with one partition board connector 18, a low-voltage artificial network module 9 electrically connected with the negative electrode of the high-voltage power supply 13 is electrically connected with the other partition board connector 18, a measuring instrument 20 is arranged on one side of the shielding shell 26, and the measuring instrument 20 is electrically connected with the other partition board connector 18;
the optical fiber feed-through 17 is fixed on the shielding shell 26, the optical fiber 22 is arranged between the optical fiber feed-through 17 and the low-voltage load simulator 7, and the optical fiber 22 is electrically connected, the monitoring system 19 is arranged on one side of the shielding shell 26, and the monitoring system 19 is electrically connected with the optical fiber feed-through 17;
one side of the ground plane 2 is fixed with a plurality of ground strips 23, the other end of the ground strip 23 is connected with a shielding shell 26, a plurality of devices on the ground plane are connected with the ground plane, and the ground plane leads the shielding shell to be caused by the voltage of the grounding of the devices through the ground strip, so that the influence on the measuring environment caused by poor grounding is avoided;
the two high-voltage artificial network modules 10 are electrically connected with the shielding box 14 in a grounding way, and the impedance matching network module 8 is electrically connected with the shielding box 14 in a grounding way;
the measured piece 1 is electrically connected with the ground plane 2 in a grounding way, the shielding box 14 is electrically connected with the ground plane 2 in a grounding way, the low-voltage load simulator 7 is electrically connected with the ground plane 2 in a grounding way, the two low-voltage artificial network modules 9 are electrically connected with the ground plane 2 in a grounding way, and the low-voltage supply line 11 electrically connected with the negative electrode of the low-voltage power supply 13 is electrically connected with the ground plane 2 through an external circuit;
the connection line between the low-voltage load simulator 7 and the test piece 1 is mounted on the low-coherence dielectric constant material 3, and the high-voltage line 6 is mounted on the low-coherence dielectric constant material 3.
Example 2: referring to fig. 1-2: the embodiment provides a technical scheme based on the embodiment 1: the high-voltage power supply 15, the radio frequency switch 24, the monitoring system 19, the measuring instrument 20 and the current clamp 4 are externally connected with an upper computer.
Working principle:
firstly, a high-voltage power supply 15 supplies power to two high-voltage artificial network modules 10 through a power line filter 16, the power line filter 16 effectively filters out frequency points with specific frequency or frequencies outside the frequency points in a power line to obtain a power signal with specific frequency, the power signal with specific frequency is transmitted into the high-voltage artificial network modules 10, the high-voltage artificial network modules 10 provide stable impedance and isolate high-frequency interference on the power network, then an interference voltage is coupled to a first load device 25, the first load device 25 consumes the interference voltage, the high-voltage artificial network modules 10 transmit the processed voltage to an impedance matching network module 8, the impedance matching network module 8 prevents standing waves from ensuring effective power transmission to a tested piece 1, the low-voltage power supply 13 transmits the power into two low-voltage artificial network modules 9, the low-voltage artificial network module 9 provides a stable impedance, isolates high-frequency interference on the power grid, then couples the interference voltage to the second load device 27, the second load device 27 consumes the interference voltage, the low-voltage artificial network module 9 transmits the processed voltage to the tested piece 1, the measuring instrument 20 acquires an interference curve of the low-voltage artificial network module 9 through the partition board connector 18 and transmits the interference curve to the upper computer, the attenuation characteristic of the high-voltage interference generated during the operation process of the high-voltage circuit of the tested equipment after the coupling of the high-voltage interference into the low-voltage interference is tested, the monitoring system 19 monitors and controls the low-voltage load simulator 7 to provide a controllable current source for the tested piece 1 through the optical fiber feed-through 17, the radio frequency switch 24 controls the operation of the current clamp 4 through the partition board connector 18, the current of the high-voltage artificial network module 10 when transmitting to the impedance matching network module 8 is monitored and the monitoring data is transmitted to the upper computer.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (8)
1. The battery pack high-low voltage coupling test equipment comprises a shielding shell (26), and is characterized in that a ground plane (2) is arranged in the shielding shell (26), a low-coherence dielectric constant material (3) is arranged at the top of the ground plane (2), a tested piece (1) is arranged at the top of the low-coherence dielectric constant material (3), a shielding box (14) is arranged at the top of the ground plane (2), an impedance matching network module (8) is arranged in the shielding box (14), a high-voltage circuit (6) is electrically connected to the output end of the impedance matching network module (8), the output end of the high-voltage circuit (6) is electrically connected with the input end of the tested piece (1), two high-voltage artificial network modules (10) are arranged in the shielding box (14), current clamps (4) are arranged in the shielding box (14), the positive and negative poles and the negative poles of the impedance matching network module (8) are respectively connected with the two high-voltage artificial network modules (10) through electrical connection wires and are sleeved on one of the shielding box (14), one of the two high-voltage artificial network modules (25) are electrically connected with the two high-voltage artificial network modules (25), one high-voltage artificial network module (25) is arranged in the shielding box (14), the low-voltage load simulator (7) is electrically connected with a tested piece (1), a low-voltage power supply (13) and two low-voltage artificial network modules (9) are installed on the ground plane (2), two low-voltage supply lines (11) are arranged between the low-voltage power supply (13) and the two low-voltage artificial network modules (9), the positive electrode and the negative electrode of the low-voltage power supply (13) are electrically connected with the two low-voltage artificial network modules (9) through the two low-voltage supply lines (11), the two low-voltage artificial network modules (9) are electrically connected with the tested piece (1), a second loader (27) is installed at the top of the ground plane (2), and the second loader (27) is electrically connected with the low-voltage artificial network modules (9) electrically connected with the positive electrode of the low-voltage power supply (13).
2. The battery pack high-low voltage coupling test equipment according to claim 1, wherein a power line filter (16) is fixed on the shielding shell (26), a high-voltage supply line (12) is arranged between the power line filter (16) and two high-voltage artificial network modules (10) and is electrically connected with the power line filter (16) through the high-voltage supply line (12), a high-voltage power supply (15) is installed on one side of the shielding shell (26), the high-voltage power supply (15) is electrically connected with the power line filter (16), two partition board connectors (18) are fixed on the shielding shell (26), a coaxial cable (21) is arranged between one partition board connector (18) and a current clamp (4) and is electrically connected with the current clamp (4) through the coaxial cable (21), a radio frequency switch (24) is installed on one side of the shielding shell (26), the radio frequency switch (24) is electrically connected with one partition board connector (18), a low-voltage artificial network module (9) electrically connected with a negative electrode of the low-voltage power supply (13) is electrically connected with the other partition board connector (18), the shielding shell (18) is electrically connected with the other partition board connector (20), and the measuring instrument (20) is electrically connected with the other measuring instrument (20).
3. The battery pack high-low voltage coupling test equipment according to claim 2, wherein an optical fiber feedthrough (17) is fixed on the shielding shell (26), an optical fiber (22) is arranged between the optical fiber feedthrough (17) and the low voltage load simulator (7) and is electrically connected with the optical fiber (22), a monitoring system (19) is installed on one side of the shielding shell (26), and the monitoring system (19) is electrically connected with the optical fiber feedthrough (17).
4. The battery pack high-low voltage coupling test equipment according to claim 1, wherein a plurality of grounding strips (23) are fixed on one side of the grounding plane (2), and the other end of the grounding strips (23) is connected with a shielding shell (26).
5. The battery pack high-low voltage coupling test equipment according to claim 1, wherein two high-voltage artificial network modules (10) are electrically connected with a shielding box (14) in a grounding way, and the impedance matching network module (8) is electrically connected with the shielding box (14) in a grounding way.
6. The battery pack high-low voltage coupling test equipment according to claim 1, wherein the tested piece (1) is electrically connected with the ground plane (2), the shielding box (14) is electrically connected with the ground plane (2), the low voltage load simulator (7) is electrically connected with the ground plane (2), the two low voltage artificial network modules (9) are electrically connected with the ground plane (2), and the low voltage supply line (11) electrically connected with the negative electrode of the low voltage power supply (13) is electrically connected with the ground plane (2) through an external circuit.
7. The battery pack high-low voltage coupling test equipment according to claim 1, wherein a connecting line between the low voltage load simulator (7) and the tested piece (1) is mounted on the low-coherence dielectric constant material (3), and the high-voltage line (6) is mounted on the low-coherence dielectric constant material (3).
8. The battery pack high-low voltage coupling test equipment according to claim 3, wherein the high-voltage power supply (15), the radio frequency switch (24), the monitoring system (19), the measuring instrument (20) and the current clamp (4) are externally connected with an upper computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311383793.5A CN117434367A (en) | 2023-10-24 | 2023-10-24 | High-low voltage coupling test equipment for battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311383793.5A CN117434367A (en) | 2023-10-24 | 2023-10-24 | High-low voltage coupling test equipment for battery pack |
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| Publication Number | Publication Date |
|---|---|
| CN117434367A true CN117434367A (en) | 2024-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311383793.5A Pending CN117434367A (en) | 2023-10-24 | 2023-10-24 | High-low voltage coupling test equipment for battery pack |
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| CN (1) | CN117434367A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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