CN219320357U

CN219320357U - Load device for reactive power test

Info

Publication number: CN219320357U
Application number: CN202320145801.1U
Authority: CN
Inventors: 董冰萧; 林智春; 王伟群
Original assignee: Shenzhen Yuanlichuang Technology Co ltd
Current assignee: Shenzhen Yuanlichuang Technology Co ltd
Priority date: 2023-01-12
Filing date: 2023-01-12
Publication date: 2023-07-07
Anticipated expiration: 2033-01-12

Abstract

The utility model provides a load device for reactive power test, includes the quick-witted case and sets up a plurality of reactors in the quick-witted incasement, install on the machine case with the barrel quick connector that the reactor one-to-one is connected, the reactor is through corresponding the barrel quick connector is used for being connected with the power module on the external test machine, and every the reactor corresponds a test station. The utility model can provide a plurality of test stations, each test station corresponds to one power module to be tested, can stably absorb large current generated by the power module, and is convenient for normal test of the power module; the first reactor is integrated in a case to form a whole, the size is small, the carrying is convenient, the aging influence of dust on the reactor can be reduced due to the protection of the case structure, and the safety protection is high; and the reactor is used for being connected with the power module on the external testing machine through the corresponding gun barrel quick connector, so that the on-site installation wiring is convenient, no messy cables are generated, and the testing environment is tidier.

Description

Load device for reactive power test

Technical Field

The utility model relates to the field of reactive power test systems, in particular to a load device for reactive power test, which is mainly used for a reactive power test system of an IGBT module in an electric automobile semiconductor.

Background

In the related field of reactive power test equipment, a special load for absorbing and testing the inversion of a high-power IGBT module to generate high current is generally needed. The existing load is generally connected by adopting a single reactor, no safety protection measures are provided after the installation, the equipment is easy to be damaged or the equipment is exposed in the air for a long time, the insulation is easy to age due to more accumulated dust, a certain potential safety hazard exists for personal safety, the reactor is not protected, the reactor is high-voltage and high-current (1100V, 600A), and the electric shock accident is easy to be caused by human touch. Moreover, when a plurality of reactors are needed in the same test, the wiring of the scattered reactors is disordered, so that the possibility of causing safety accidents is further improved. Accordingly, there is a need for improvements in the load section of prior art reactive test systems.

Disclosure of Invention

Based on the above, the utility model provides a load device for reactive power test, which aims to solve the technical problems that the load for reactive power test in the prior art lacks safety protection measures and the equipment is scattered and inconvenient to use.

In order to achieve the above purpose, the utility model provides a load device for reactive power testing, which comprises a chassis and a plurality of reactors arranged in the chassis, wherein gun barrel quick connectors which are connected with the reactors in a one-to-one correspondence manner are arranged on the chassis, the reactors are used for being connected with power modules on an external testing machine through the corresponding gun barrel quick connectors, and each reactor corresponds to one testing station.

As a further preferable embodiment of the present utility model, a partition plate is provided in the housing, the partition plate divides the housing into an upper space and a lower space, and the plurality of reactors are provided in the upper space and the lower space.

As a further preferable technical scheme of the utility model, the upper layer space and the lower layer space are divided into three compartments, wherein five compartments are respectively provided with one reactor, the rest of the compartments are internally provided with a switch power supply, and the case is provided with a power plug connected with the switch power supply, and the switch power supply is used for inputting AC220V and outputting DC12V.

As a further preferable technical scheme of the utility model, a heat radiation air outlet is arranged on the wall surface of the case, a heat radiation fan connected with the switch power supply is arranged at the heat radiation air outlet, and a heat radiation air inlet is arranged at the bottom of the case.

As a further preferable technical scheme of the utility model, shields corresponding to the reactors one by one are further arranged in the case, and the reactors are covered in the corresponding shields.

As a further preferable technical scheme of the utility model, a temperature alarm plug is arranged on the case, and the temperature alarm plug is connected with a temperature sensor arranged inside the case.

As a further preferable aspect of the present utility model, the temperature sensor is mounted on a coil of the reactor, and the temperature sensor is mounted on at least one of the reactors.

The load device for reactive power test can achieve the following beneficial effects by adopting the technical scheme:

1) The power module testing device can provide a plurality of testing stations, each testing station corresponds to one power module to be tested, can stably absorb large current generated by the power module, and is convenient for normal testing of the power module;

2) The first reactor is integrated in a case to form a whole, the size is small, the carrying is convenient, the aging influence of dust on the reactor can be reduced due to the protection of the case structure, and the safety protection is high;

3) The reactor is used for being connected with a power module (high-current IGBT) on an external testing machine through the corresponding gun barrel quick connector, so that the on-site installation wiring is facilitated, no messy cables are generated, and the testing environment is tidier.

Drawings

The utility model will be described in further detail with reference to the drawings and the detailed description.

FIG. 1 is a schematic diagram of an embodiment of a load device for reactive power testing according to the present utility model;

FIG. 2 is a schematic diagram of a side of the chassis

FIG. 3 is a schematic diagram of the internal structure of the chassis;

fig. 4 is a schematic diagram of electrical connection between a load device and a tester.

In the figure: 1. the device comprises a case, 2, a reactor, 3, a partition board, 4, a shield, 5, a connector mounting hole, 6, a case door, 7 and a testing machine.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The utility model will be further described with reference to the drawings and detailed description. The terms such as "upper", "lower", "left", "right", "middle" and "a" in the preferred embodiments are merely descriptive, but are not intended to limit the scope of the utility model, as the relative relationship changes or modifications may be otherwise deemed to be within the scope of the utility model without substantial modification to the technical context.

As shown in fig. 1 and 2, the utility model provides a load device for reactive power test, which comprises a case 1 and a plurality of reactors 2 arranged in the case 1, wherein a connector mounting hole 5 is formed in the side wall of the case 1, gun barrel quick connectors which are connected with the reactors 2 in a one-to-one correspondence manner are arranged in the connector mounting hole 5, the reactors 2 are used for being connected with a power module on an external test machine 7 through the corresponding gun barrel quick connectors (also called aviation plugs), and each reactor 2 corresponds to one test station. The plurality of reactors 2 are stored in the case 1, so that the electric power testing device is convenient to carry, neat in wiring, safe and reliable, and the power modules of the testing device 7 are conveniently connected with the cables of the reactors 2 by adopting the gun barrel quick connector, so that the electric power testing device can be plugged and used on site.

In a specific embodiment, a partition board 3 is disposed in the case 1, the partition board 3 divides the case 1 into an upper space and a lower space, and the plurality of reactors 2 are disposed in the upper space and the lower space. The upper layer space and the lower layer space are divided into three compartments, wherein five compartments are respectively provided with one reactor 2, the rest of compartments are internally provided with a switching power supply, the case 1 is provided with a power plug connected with the switching power supply, and the switching power supply is used for inputting AC220V and outputting DC12V. Specifically, the case 1 has a square structure, and the volume of the case for placing five reactors 2 may be designed as follows: 1560 x 841 x 1310, in mm.

The wall surface of the case 1 is close to the top or the top wall surface is provided with a heat radiation air outlet, the heat radiation air outlet is provided with a heat radiation fan connected with the switching power supply, and the bottom of the case 1 is provided with a heat radiation air inlet so as to ensure that the reactor 2 can sufficiently radiate heat during the working period, and the insulation of the reactor 2 cannot be damaged due to overhigh temperature.

Preferably, the case 1 is further provided with a shield 4 corresponding to the reactors 2 one by one, the reactors 2 are covered in the corresponding shields 4, and the shields 4 play a role in shielding protection for the metal shell, so as to prevent possible discharge situations between the reactors 2 which are arranged in the case 1 and are close to each other, and meanwhile, the electromagnetic shielding effect is also achieved, so that strong electromagnetic signals generated by the reactors 2 are prevented from influencing external test design.

Preferably, a temperature alarm plug is installed on the case 1, and the temperature alarm plug is connected with a temperature sensor arranged inside the case 1. The temperature sensors are mounted on the coils of the reactors 2, and at least one of the reactors 2 is mounted with the temperature sensor. The cooling fan mainly ventilates and cools the reactor 2, the reactor 2 can generate heat in the working process of large current, and the fan circulates air to take away the heat.

Preferably, a door 6 is hinged to the side of the case 1, and the door 6 is opened to facilitate inspection and maintenance of the interior of the case 1.

The load device for reactive power test in this embodiment is a reactor load device, mainly for consuming ac large current generated when the power modules (IGBTs) of the tester 7 are inverted, the tester 7 has five power module testing stations, each station is connected to the input terminal of the corresponding reactor 2 through a three-phase cable, and the electrical connection relationship between the load device for reactive power test and the tester 7 is shown in fig. 4.

While particular embodiments of the present utility model have been described above, it will be appreciated by those skilled in the art that these are merely illustrative, and that many variations or modifications may be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined only by the appended claims.

Claims

1. The utility model provides a load device for reactive power test, its characterized in that includes the quick-witted case, and set up a plurality of reactors in the quick-witted incasement, install on the machine case with the barrel quick connector that the reactor one-to-one is connected, the reactor is through corresponding the barrel quick connector is used for being connected with the power module on the external test machine, and every the reactor corresponds a test station.

2. The load device for reactive power testing according to claim 1, wherein a partition plate is provided in the cabinet, the partition plate divides the interior of the cabinet into an upper space and a lower space, and the plurality of reactors are provided in the upper space and the lower space.

3. The load device for reactive power testing according to claim 2, wherein the upper space and the lower space are each divided into three compartments, wherein five of the compartments each house one of the reactors, and the remaining one of the compartments houses a switching power supply.

4. A load device for reactive power testing according to claim 3, wherein a power plug connected to the switching power supply for inputting AC220V and outputting DC12V is mounted on the cabinet.

5. The load device for reactive power testing according to claim 4, wherein a heat dissipation air outlet is formed in a wall surface of the case, a heat dissipation fan connected with the switching power supply is installed at the heat dissipation air outlet, and a heat dissipation air inlet is formed in the bottom of the case.

6. The load device for reactive power testing according to claim 1, wherein shields corresponding to the reactors one by one are further arranged in the case, and the reactor shields are arranged in the corresponding shields.

7. The load device for reactive power testing according to claim 1, wherein a temperature alarm plug is mounted on the cabinet, and a temperature sensor provided inside the cabinet is connected to the temperature alarm plug.

8. The load device for reactive power testing of claim 7, wherein the temperature sensor is mounted on a coil of the reactor, and at least one of the reactors has the temperature sensor mounted thereon.