CN212781165U

CN212781165U - Connection structure of high-efficient switching overload short circuit test power cord

Info

Publication number: CN212781165U
Application number: CN202021559229.6U
Authority: CN
Inventors: 康金灿; 刘静; 任朝瑞; 范伟; 夏瑞阳
Original assignee: Henan THB Electric Co Ltd
Current assignee: Henan THB Electric Co Ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-03-23
Anticipated expiration: 2030-07-31

Abstract

The utility model provides a high-efficient connection structure who switches overload short-circuit test power cord for when carrying out whole car short-circuit test and overload test among the solution prior art, cause the technical problem that the repetitive operation, consuming time are long, work efficiency hangs down. The utility model comprises a DC power supply, an electronic load, a circuit switch, a safety piece and a load component to be tested, wherein the DC power supply, the electronic load, the circuit switch, the safety piece and the load component to be tested are connected in sequence and form a series circuit, two ends of the series circuit are grounded, a subsection branch circuit is connected in parallel on the series circuit, and a storage battery is arranged on the subsection branch circuit; and a short-circuit connector is butted on the electronic load. The utility model discloses when satisfying short-circuit test and overload test requirement, can effectively shorten power cord switching operation time, improve work efficiency.

Description

Connection structure of high-efficient switching overload short circuit test power cord

Technical Field

The utility model relates to an automobile electrical property test technical field, concretely relates to high-efficient connection structure who switches overload short circuit test power cord.

Background

With the high-speed development of the automobile industry, the functions of automobile assembly are gradually increased, and in order to ensure the safety of the whole automobile design, the verification of the electric performance of the whole automobile becomes an essential link for the automobile design. On the basis of low cost, the safety of design is also ensured. Therefore, we need to perform the overload short test. Generally, overload test is performed after all short circuit tests are completed, the series-parallel connection structure of the programmable direct current power supply, the programmable electronic load and the storage battery needs to be replaced, and meanwhile, all connectors and terminals of the load to be tested need to be searched again, so that repeated operation is performed, time consumption is long, and working efficiency is low. In order to complete the overload short circuit test of all the insurance of the whole vehicle within a limited time, an efficient and quick test means must be found.

SUMMERY OF THE UTILITY MODEL

When carrying out whole car short circuit test and overload test among the prior art, cause the technical problem that repeated operation, consuming time are long, work efficiency is low, the utility model provides a connection structure of overload short circuit test power cord is switched to high efficiency, when satisfying short circuit test and overload test requirement, can effectively shorten power cord switching operation time, improves work efficiency.

In order to solve the technical problem, the utility model discloses a following technical scheme: a connection structure for efficiently switching an overload short-circuit test power line comprises a direct-current power supply, an electronic load, a circuit switch, a safety piece and a load component to be tested, wherein the direct-current power supply, the electronic load, the circuit switch, the safety piece and the load component to be tested are sequentially connected and form a series circuit, two ends of the series circuit are grounded, a segmented branch circuit is connected to the series circuit in parallel, and a storage battery is arranged on the segmented branch circuit; and a short-circuit connector is butted on the electronic load.

The direct current power supply is a programmable direct current power supply, the anode of the direct current power supply is connected with the electronic load through a power supply anode line, and the cathode of the direct current power supply is connected with the storage battery through a power supply cathode line.

The electronic load is a programmable electronic load, the anode of the electronic load is connected with a direct current power supply, and the cathode of the electronic load is connected with the storage battery through an electronic load connecting wire; and the anode of the electronic load is connected with the short-circuit connector through the anode short-circuit wire of the electronic load, and the cathode of the electronic load is connected with the short-circuit connector through the cathode short-circuit wire of the electronic load.

The positive pole of the storage battery is connected with the circuit switch through the positive pole line of the storage battery, and the negative pole of the storage battery is connected with the grounding end through the negative pole line of the storage battery; the circuit switch is a knife switch.

The positive pole of the storage battery is connected with a storage battery positive pole assembly, the storage battery positive pole assembly is a storage battery positive pole pile head, and the electronic load connecting line and the storage battery positive pole line are both hung on the storage battery positive pole pile head; the negative pole of the storage battery is connected with a storage battery negative pole assembly, the storage battery negative pole assembly is a storage battery negative pole pile head, and the power supply negative pole line and the storage battery negative pole line are both hung on the storage battery negative pole pile head.

The fuse piece is a fuse or a fuse short-circuit wire, one end of the fuse or the fuse short-circuit wire is connected with the circuit switch, and the other end of the fuse or the fuse short-circuit wire is connected with the load component to be tested through the wire to be tested.

The testing assembly is arranged between the circuit switch and the load assembly to be tested and comprises a data acquisition instrument, a current clamp and a K-type thermocouple, the current clamp and the K-type thermocouple are connected to a lead to be tested, the current clamp is arranged close to the fuse 501 or the fuse short-circuit wire 502, the K-type thermocouple is arranged close to the load assembly to be tested, and the current clamp and the K-type thermocouple are respectively connected with the data acquisition instrument through leads.

The load assembly to be tested comprises a load connector to be tested and a load short-circuit wire to be tested, and two ends of the load short-circuit wire to be tested are respectively in short circuit with a power line hole site and a negative line hole site of the load connector to be tested; the lead to be tested comprises a power line to be tested and a negative line to be tested, the power line to be tested is inserted in the power line hole position of the load connector to be tested, one end of the negative line to be tested is inserted in the negative line hole position of the load connector to be tested, and the other end of the negative line to be tested is connected with the grounding end.

The short circuit connector is an automobile connector terminal and comprises a male end and a female end, and the male end is in splicing fit with the female end.

The utility model with the structure is adopted, the storage battery positive pole component and the storage battery negative pole component are respectively arranged on the positive pole and the negative pole of the storage battery, so that the storage battery and the direct current power supply are connected in parallel, and meanwhile, the short-circuit connector is butted on the electronic load, thereby forming a short-circuit test loop; when carrying out the overload test of same return circuit immediately after the short circuit test, only need to take off battery positive pole subassembly and battery negative pole subassembly respectively from the positive and negative pole of battery, break off the public end and the female end of short circuit connector simultaneously to form the overload test return circuit, realize satisfying whole car short circuit test and overload test requirement in, can effectively shorten the power cord and switch over operating time, improve work efficiency, and simple structure, convenient operation has very strong practicality.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the positive electrode assembly of the storage battery of the present invention;

fig. 3 is a schematic structural diagram of the negative electrode assembly of the storage battery of the present invention.

In the figure, 101 is a direct current power supply, 102 is a power supply negative line, 103 is a power supply positive line, 201 is an electronic load, 202 is an electronic load positive short-circuit line, 203 is an electronic load negative short-circuit line, 204 is an electronic load connecting line, 205 is a short-circuit connector, 301 is a storage battery, 302 is a storage battery positive electrode assembly, 303 is a storage battery negative electrode assembly, 304 is a storage battery positive line, 305 is a storage battery negative line, 401 is a circuit switch, 501 is a fuse, 502 is a fuse short-circuit line, 601 is a load connector to be tested, 602 is a load short-circuit to be tested, 701 is a data acquisition instrument, 702 is a current clamp, 703 is a K-type thermocouple, 801 is a power line to be tested, and 802 is a negative line to be tested.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.

As shown in fig. 1, the utility model provides a high-efficient connection structure who switches overload short-circuit test power cord, including DC power supply 101, electronic load 201, circuit switch 401, insurance piece and the load subassembly that awaits measuring, DC power supply 101, electronic load 201, circuit switch 401, insurance piece and the load subassembly that awaits measuring connect gradually and form series circuit, and this series circuit is the overload test return circuit for to the return circuit that awaits measuring carries out overload test. The two ends of the series circuit are grounded, a segmented branch circuit is connected in parallel on the series circuit, a storage battery 301 is arranged on the segmented branch circuit, namely the storage battery 301 is connected in parallel with the direct-current power supply 101, the direct-current power supply 101 supplies power to the storage battery 301 in a voltage stabilizing mode, and a short-circuit connector assembly 205 is connected to the electronic load 201 in a butt joint mode, so that the whole short-circuit testing circuit is formed and is used for performing short-circuit testing on a circuit to be tested.

Specifically, the dc power supply 101 is a programmable dc power supply, the electronic load 201 is a programmable electronic load, and the circuit switch 401 is a knife switch. The positive pole of the direct current power supply 101 is connected with the positive pole of the electronic load 201 through the positive power supply line 103, the negative pole of the direct current power supply 101 is connected with the positive pole of the storage battery 301 through the negative power supply line 102, the negative pole of the electronic load 201 is connected with the positive pole of the storage battery 301 through the electronic load connecting line 204, the positive pole of the storage battery 301 is connected with the circuit switch 401 through the positive storage battery line 304, the negative pole is connected with the vehicle body ground through the negative storage battery line 305, and namely the negative storage battery line 305 is a ground wire. Furthermore, the wire diameters of the electronic load connecting wire 204, the storage battery positive wire 304, the power supply negative wire 102 and the storage battery negative wire 305 are generally 25-35 mm2, two ends of the electronic load connecting wire 204, the storage battery positive wire 304, the power supply negative wire 102 and the storage battery negative wire 305 are connected with hole-type terminals with the diameter phi 8 in a pressure equalizing mode, the hole-type terminals are made of copper or copper alloy, and the pressure welding portions of the hole-type terminals are sealed and protected by heat shrink tubes.

As shown in fig. 2 and fig. 3, a positive electrode assembly 302 of the storage battery is connected to a positive electrode of the storage battery 301, and a negative electrode assembly 303 of the storage battery is connected to a negative electrode of the storage battery, specifically, the positive electrode assembly 302 of the storage battery is a positive electrode pile head of the storage battery, the negative electrode assembly 303 of the storage battery is a negative electrode pile head of the storage battery, one end of each of the electronic load connection line 204 and the positive electrode line 304 of the storage battery is hung on the positive electrode pile head of the storage battery through a hole-type terminal, the other end of the electronic load connection line 204 is connected to a negative electrode of the electronic load 201 through a bolt; one end of the power supply negative wire 102 and one end of the storage battery negative wire 305 are both hung on the storage battery negative pile head through the hole-type terminal, the other end of the power supply negative wire 102 is connected with the negative electrode of the direct current power supply 101 through a bolt, and the other end of the storage battery negative wire 305 is grounded. The positive pole of the electronic load 201 is connected with the short-circuit connector 205 through the positive short-circuit wire 202 of the electronic load, the negative pole is connected with the short-circuit connector 205 through the negative short-circuit wire 203 of the electronic load, the short-circuit connector 205 in the embodiment is an automobile connector terminal made of copper or copper alloy, the short-circuit connector 205 comprises a male end and a female end, the male end and the female end are in splicing fit, a separable electrical connection structure is provided for an electrical transmission system through splicing and pulling out of the male end and the female end, the structure is simple, and the operation is simple and convenient.

The fuse is a fuse 501 or a fuse short-circuit wire 502, one end of the fuse 501 or the fuse short-circuit wire 502 is connected with the circuit switch 401, and the other end is connected with the load component to be tested through a wire to be tested. Namely, when the short circuit test is performed on the circuit to be tested, the fuse element is the fuse 501, and the fuse at the position needs to be fused in the short circuit test process, so that the function of protecting the wire to be tested is achieved, and the wire to be tested is prevented from being burnt out. When the overload test of the same circuit is performed immediately after the short circuit test is completed, the fuse 501 needs to be replaced with the fuse shorting line 502. The load component to be tested comprises a load connector 601 to be tested and a load short-circuit line 602 to be tested, and two ends of the load short-circuit line 602 to be tested are respectively in short circuit connection with a power line hole position and a negative line hole position of the load connector 601 to be tested. In this embodiment, the lead to be tested includes a power line 801 to be tested and a negative line 802 to be tested, the power line 801 to be tested is plugged in a power line hole of the load connector 601 to be tested, one end of the negative line 802 to be tested is plugged in a negative line hole of the load connector 601 to be tested, and the other end is connected to the vehicle body. The test component is connected between the circuit switch 401 and the load connector 601 to be tested and comprises a data acquisition instrument 701, a current clamp 702 and a K-type thermocouple 703, the current clamp 702 and the K-type thermocouple 703 are connected to a power line 801 to be tested, the current clamp 702 is arranged close to the fuse 501 or the fuse short-circuit wire 502, the K-type thermocouple 703 is arranged close to the load connector 601 to be tested, and the current clamp 702 and the K-type thermocouple 703 are respectively connected with the data acquisition instrument 701 through wires. The current clamp 702 is used for measuring the current value in the wire to be measured, the K-type thermocouple 703 is used for measuring the temperature change of the wire to be measured, and the data acquisition instrument 701 is used for recording the measured current value and the temperature change respectively.

When a short circuit test is carried out on a loop to be tested, the direct current power supply 101, the electronic load 201 and the circuit switch 401 are connected in series through corresponding leads in sequence; a storage battery positive electrode assembly 302 and a storage battery negative electrode assembly 303 are respectively arranged on the positive electrode and the negative electrode of the storage battery 301, so that the storage battery 301 is connected with the direct current power supply 101 in parallel; connecting the electronic load anode short-circuit wire 202 and the electronic load cathode short-circuit wire 203 respectively through a short-circuit connector 205 to short-circuit the electronic load 201; then connecting the fuse 501 with the load connector 601 to be tested, and using the load short-circuit line 602 to be tested to short-circuit the load connector 601 to be tested; the closed circuit switch 401 performs a short circuit test, measures the short circuit current by the current clamp 702, and records the short circuit current and the short circuit time by the data acquisition instrument 701.

Immediately performing overload test on the same loop after the short circuit test is finished, and keeping the serial loops of the direct current power supply 101, the electronic load 201 and the circuit switch 401 unchanged; the storage battery positive electrode assembly 302 and the storage battery negative electrode assembly 303 are respectively taken down from the positive electrode and the negative electrode of the storage battery 301, and the storage battery 301 is disconnected; separating the male end and the female end of the shorting connector 205 to disconnect the electronic load positive shorting stub 202 and the electronic load negative shorting stub 203; the fuse 501 is replaced by a fuse short-circuit wire 502, namely, the short-circuit is carried out by the fuse short-circuit wire 502; then sticking the K-type thermocouple 703 on the power line 801 to be tested, wherein the position of the K-type thermocouple is about 50mm away from the load connector 601 to be tested; the circuit switch 401 is closed to perform overload test, the temperature of the power line 801 to be tested is measured by the K-type thermocouple 703, and the measured temperature change is recorded by the data acquisition instrument 701. When the test loop is replaced and the short circuit test is carried out again, the steps can be directly repeated, the switching is efficient, the operation is very simple and convenient, the power line switching operation time is effectively shortened, and the working efficiency is greatly improved.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a connection structure of overload short circuit test power cord is switched to high efficiency which characterized in that: the direct current power supply (101), the electronic load (201), the circuit switch (401), the fuse piece and the load component to be tested are sequentially connected to form a series circuit, two ends of the series circuit are grounded, a segmented branch circuit is connected to the series circuit in parallel, and a storage battery (301) is arranged on the segmented branch circuit; and a short-circuit connector assembly (205) is butted on the electronic load (201).

2. The connection structure of an efficient switching overload short-circuit test power supply line according to claim 1, wherein: the direct current power supply (101) is a programmable direct current power supply, the anode of the direct current power supply (101) is connected with the electronic load (201) through a power supply anode line (103), and the cathode of the direct current power supply is connected with the storage battery (301) through a power supply cathode line (102).

3. The connection structure of an efficient switching overload short-circuit test power supply line according to claim 2, wherein: the electronic load (201) is a programmable electronic load, the anode of the electronic load (201) is connected with the direct current power supply (101), and the cathode of the electronic load (201) is connected with the storage battery (301) through an electronic load connecting wire (204); the positive pole of the electronic load (201) is connected with the short-circuit connector (205) through the electronic load positive pole short-circuit wire (202), and the negative pole is connected with the short-circuit connector (205) through the electronic load negative pole short-circuit wire (203).

4. The connection structure of an efficient switching overload short-circuit test power supply line according to claim 3, wherein: the positive electrode of the storage battery (301) is connected with the circuit switch (401) through a storage battery positive electrode wire (304), and the negative electrode of the storage battery is connected with the grounding end through a storage battery negative electrode wire (305); the circuit switch (401) is a knife switch.

5. The connection structure of an efficient switching overload short-circuit test power supply line according to claim 4, wherein: the positive pole of the storage battery (301) is connected with a storage battery positive pole assembly (302), the storage battery positive pole assembly (302) is a storage battery positive pole pile head, and the electronic load connecting line (204) and the storage battery positive pole line (304) are both hung on the storage battery positive pole pile head; the negative pole of battery (301) is connected with battery negative pole subassembly (303), and battery negative pole subassembly (303) are battery negative pole pile head, power negative pole line (102) and battery negative pole line (305) all articulate on battery negative pole pile head.

6. The connection structure of an efficient switching overload short-circuit test power supply line according to claim 1 or 5, wherein: the fuse piece is a fuse (501) or a fuse short-circuit wire (502), one end of the fuse (501) or the fuse short-circuit wire (502) is connected with the circuit switch (401), and the other end of the fuse (501) or the fuse short-circuit wire (502) is connected with the load component to be tested through a wire to be tested.

7. The connection structure of an efficient switching overload short-circuit test power supply line according to claim 6, wherein: the testing assembly is arranged between the circuit switch (401) and the load assembly to be tested and comprises a data acquisition instrument (701), a current clamp (702) and a K-type thermocouple (703), the current clamp (702) and the K-type thermocouple (703) are connected to a lead to be tested, the current clamp (702) is arranged close to a fuse (501) or a fuse short-circuit wire (502), the K-type thermocouple (703) is arranged close to the load assembly to be tested, and the current clamp (702) and the K-type thermocouple (703) are respectively connected with the data acquisition instrument (701) through leads.

8. The connection structure of an efficient switching overload short-circuit test power supply line according to claim 7, wherein: the load assembly to be tested comprises a load connector (601) to be tested and a load short-circuit wire (602) to be tested, wherein two ends of the load short-circuit wire (602) to be tested are respectively and short-circuited on a power line hole site and a negative line hole site of the load connector (601) to be tested; the lead to be tested comprises a power line (801) to be tested and a negative line (802) to be tested, the power line (801) to be tested is inserted in a power line hole position of the load connector assembly (601) to be tested, one end of the negative line (802) to be tested is inserted in a negative line hole position of the load connector assembly (601) to be tested, and the other end of the negative line to be tested is connected with a grounding terminal.

9. The connection structure of the high efficiency switching overload short circuit test power supply line according to claim 1, 5 or 8, wherein: the short circuit connector (205) is an automobile connector terminal, the short circuit connector (205) comprises a male end and a female end, and the male end is in plug-in fit with the female end.