Current testing tool

Abstract

The utility model discloses a current testing tool. The current test tool is connected in series in a to-be-tested wire harness, and comprises a housing which is connected in series with a shielding layer of the to-be-tested wire harness; the conductive piece is arranged in the shell, the conductive piece and the inner surface of the shell are arranged at an interval, and the conductive piece is connected with a wire core of the wire harness to be tested in series; and the current detection element is arranged in the shell, the current detection element is connected with the conductive piece, and the current detection element is configured to detect the current passing through the conductive piece. The current test tool provided by the embodiment of the utility model can effectively improve the accuracy of wire harness current detection.

Description

Technical Field

[0001] This application belongs to the technical field of current detection, and particularly relates to a current test tooling. Background Art

[0002] Energy consumption test and analysis is an important technology, which is widely used in technical fields such as wind power, hydropower, and new energy vehicles. Among them, the current detection of wire harnesses is an important link in energy consumption test and analysis. The existing current detection generally uses a current clamp to clamp the wire harness to be measured to measure the current passing through the wire harness.

[0003] However, since the wire harness usually includes a wire core and a shielding layer sleeved outside the wire core, when current flows through the wire core, an induced current will be generated in the shielding layer. According to the above method, the detected data is usually the sum of the current passing through the wire core and the shielding layer current, and the test result is inaccurate. Utility Model Content

[0004] The embodiments of this application provide a current test tooling, which can effectively improve the accuracy of wire harness current detection.

[0005] The embodiments of this application provide a current test tooling, wherein the current test tooling is connected in series in the wire harness to be measured, and the current test tooling includes:

[0006] A housing, which is connected in series with the shielding layer of the wire harness to be measured;

[0007] A conductive member, which is arranged inside the housing and is spaced from the inner surface of the housing, and the conductive member is connected in series with the wire core of the wire harness to be measured;

[0008] A current detection element, which is arranged inside the housing, and the current detection element is connected to the conductive member, and the current detection element is configured to detect the current passing through the conductive member.

[0009] For the current test tooling as described above, an insulating seat is fixedly arranged inside the housing, and the conductive member can be detachably mounted on the insulating seat.

[0010] For the current test tooling as described above, there are two insulating seats, and the two insulating seats are spaced apart. The two ends of the conductive member are respectively connected to the two insulating seats, the current detection element is arranged between the two insulating seats, and the conductive member penetrates through the current detection element.

[0011] For the current test tooling as described above, the conductive member is a metal connection row or a metal conducting wire.

[0012] For the current test tooling as described above, a positioning bracket is arranged inside the housing, and the current detection element can be detachably mounted on the positioning bracket.

[0013] The current test tooling as described above, wherein through holes are provided on the positioning bracket, and along the through direction of the through holes, at least part of the projection of the current detection element falls into the projection of the through holes, and the conductive member penetrates through the through holes and is connected to the current detection element.

[0014] The current test tooling as described above, wherein a plurality of positioning holes are provided on the positioning bracket, and the current detection element is detachably connected to the positioning bracket through a connecting member at at least part of the positioning holes.

[0015] The current test tooling as described above, wherein at least two connection holes are provided on the housing, and fixing members are provided at the connection holes and / or inside the housing, and the shielding layer of the wire harness to be tested is connected to the housing through the fixing members.

[0016] The current test tooling as described above, wherein the fixing member is a wire harness connector, the wire harness connector is fixedly installed in the connection hole, the wire harness to be tested penetrates through the wire harness connector, the shielding layer of the wire harness to be tested is connected to the wire harness connector, and the wire core of the wire harness to be tested penetrates through the connection hole and extends into the interior of the housing to be connected to the conductive member.

[0017] The current test tooling as described above, wherein the fixing member is a fixing bracket, the fixing bracket is fixedly installed on the inner surface of the housing, the wire harness to be tested penetrates through the connection hole, the shielding layer of the wire harness to be tested is connected to the fixing bracket, and the wire core of the wire harness to be tested is connected to the conductive member.

[0018] The current test tooling of the embodiment of the present application is connected in series in the wire harness to be tested. By arranging a conductive member spaced from the housing inside the housing, and connecting the shielding layer of the wire harness to be tested in series with the housing, and connecting the wire core of the wire harness to be tested in series with the conductive member, since there is no contact between the conductive member and the housing, it is equivalent to separating the current transmitted by the wire harness to be tested from the induced current generated by the shielding layer. At this time, by connecting the current detection element to the conductive member and detecting the current passing through the conductive member, it is equivalent to only detecting the current passing through the wire core of the wire harness to be tested, thereby effectively avoiding the interference of the induced current in the shielding layer on the current detection result and improving the accuracy of the current detection result. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0020] Figure 1Schematic structural diagram of the current testing tooling according to an embodiment of the present application;

[0021] Figure 2 Another schematic structural diagram of the current testing tooling according to an embodiment of the present application;

[0022] Figure 3 Another schematic structural diagram of the current testing tooling according to an embodiment of the present application;

[0023] Figure 4 Another schematic structural diagram of the current testing tooling according to an embodiment of the present application;

[0024] Figure 5 Another schematic structural diagram of the current testing tooling according to an embodiment of the present application.

[0025] Explanation of the reference numerals in the attached drawings:

[0026] 100, current testing tooling; 1, housing; 11, connection hole; 2, conductive member; 21, main connection row; 22, adapter row; 3, current detection element; 4, insulating seat; 5, positioning bracket; 51, through hole; 52, positioning hole; 6, fixing member; 61, wire harness connector; 62, fixing bracket; 200, wire harness to be tested; 201, wire core; 202, shielding layer. Specific embodiments

[0027] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than limiting the present application. For those skilled in the art, the present application can be implemented without some of these specific details. It should be noted that unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should be the ordinary meanings understood by those skilled in the art to which the embodiments of the present application belong. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0028] As Figure 1As shown in the figure, an embodiment of the present application provides a current test tooling 100. Among them, the current test tooling 100 is connected in series in the wire harness 200 to be tested. Optionally, the wire harness 200 to be tested includes a first section and a second section, and the current test tooling 100 is connected in series between the first section and the second section. Exemplarily, when applied to an electric vehicle, the current test tooling 100 is connected in series between the vehicle wire harness and the vehicle electronic control unit (Electronic Control Unit, ECU). When testing the current test tooling 100, the vehicle wire harness is connected to the current test tooling 100, and the vehicle control unit can be connected to the current test tooling 100 through a conductive wire harness. At this time, the vehicle wire harness can be regarded as the first section of the wire harness 200 to be tested, and the conductive wire harness connecting the vehicle control unit and the current test tooling 100 can be regarded as the second section of the wire harness 200 to be tested.

[0029] The current test tooling 100 includes a housing 1, a conductive member 2, and a current detection element 3.

[0030] The housing 1 is connected in series with the shielding layer 202 of the wire harness 200 to be tested. The housing 1 is made of a metal material and has the ability to transfer the induced current of the shielding layer 202, so as to effectively conduct with the shielding layer 202 of the wire harness 200 to form a path. Optionally, the housing 1 is made of aluminum metal, which not only has good current transfer ability, but also has a light weight, is convenient to move, and has good electromagnetic shielding ability, so as to effectively reduce the transmission of electromagnetic interference on both sides of the housing 1.

[0031] The conductive member 2 is arranged inside the housing 1 and is spaced from the inner surface of the housing 1 to achieve insulation between the conductive member 2 and the housing 1. The conductive member 2 is connected in series with the wire core 201 of the wire harness 200 to be tested to achieve current conduction of the wire harness 200 to be tested.

[0032] The current detection element 3 is arranged inside the housing 1, and the current detection element 3 is connected to the conductive member 2. The current detection element 3 is configured to detect the current passing through the conductive member 2.

[0033] The current detection element 3 can be a current sensor, and the specific model of the current sensor can be selected according to different ranges.

[0034] In this way, an induced current transfer path is formed by connecting the housing 1 in series with the shielding layer 202 of the wire harness 200 to be tested, and a current transfer path of the wire harness 200 to be tested is formed by the conductive member 2 and the wire core 201 of the wire harness 200 to be tested. And the two transfer paths are independent of each other and do not communicate with each other. At this time, the current transfer path formed by this case and the wire core 201 of the wire harness 200 to be tested can be detected separately to ensure the accuracy of the current detection result of the wire harness 200 to be tested.

[0035] Such as Figure 2As shown in the figure, the current test tooling 100 provided by the present application, wherein an insulating seat 4 is fixedly arranged inside the housing 1, and the conductive member 2 is detachably mounted on the insulating seat 4. Through the insulating seat 4, the conductive member 2 is held at the middle position inside the housing 1, so that gaps are formed between the conductive member 2 and each side surface of the housing 1 to ensure insulation between the conductive member 2 and the housing 1.

[0036] As Figure 2 shown in the figure, the current test tooling 100 provided by the present application, wherein there are two insulating seats 4, the two insulating seats 4 are arranged at intervals, and both ends of the conductive member 2 are respectively connected to the two insulating seats 4, so that the conductive member 2 is in a suspended state at the position between the two insulating seats 4, and a layout space is provided for the current detection element 3 to facilitate the mating connection with the current detection element 3.

[0037] Specifically, the current detection element 3 is arranged between the two insulating seats 4, and the conductive member 2 penetrates through the current detection element 3.

[0038] Optionally, the insulating seat 4 and the housing 1 are fixedly connected by welding or bonding to ensure the connection reliability between the insulating seat 4 and the housing 1.

[0039] For the current test tooling 100 provided by the present application, wherein the conductive member 2 is a metal connection row or a metal wire. Any conductive member 2 made of a metal material with conductive ability is acceptable, and the present application is not limited thereto.

[0040] Optionally, as Figure 2 shown in the figure, the conductive member 2 is a metal connection row, including a main connection row 21 and two adapter rows 22. The two adapter rows 22 are respectively detachably mounted on the two insulating seats 4 for realizing the fixation of the conductive member 2 and the insulating seat 4 and the connection between the conductive member 2 and the wire core 201 of the wire harness 200 to be measured; the main connection row 21 straddles the two insulating seats 4 and is detachably connected to the two adapter rows 22 respectively to realize the conduction of current.

[0041] The main connection row 21 and the two adapter rows 22 can be disassembled and replaced respectively to reduce the maintenance cost.

[0042] As Figure 3 shown in the figure, for the current test tooling 100 provided by the present application, wherein a positioning bracket 5 is arranged inside the housing 1, and the current detection element 3 is detachably mounted on the positioning bracket 5. The positioning bracket 5 provides an installation basis for the current detection element 3.

[0043] Optionally, the positioning bracket 5 is arranged between the two insulating seats 4 to facilitate arranging the current detection element 3 between the two insulating seats 4 and ensure that the current detection element 3 is smoothly connected to the main connection row 21 of the conductive member 2.

[0044] Optionally, the positioning bracket 5 and the housing 1 are fixed by bonding or welding to ensure the connection reliability between the positioning bracket 5 and the housing 1 , so that the positioning bracket 5 can provide stable support for the current detection element 3 .

[0045] like Figure 3 As shown, the current testing tool 100 provided in the present application, wherein a through hole 51 is provided on the positioning bracket 5, the conductive member 2 passes through the through hole 51, and along the through direction of the through hole 51, the projection of the current detection element 3 at least partially falls into the projection of the through hole 51, so as to ensure that the current detection element 3 is smoothly connected with the conductive member 2.

[0046] like Figure 3 As shown, the current testing tool 100 provided in the present application, wherein a plurality of positioning holes 52 are provided on the positioning bracket 5, and the current detection element 3 is detachably connected to the positioning bracket 5 at least in part of the positioning holes 52 through a connector.

[0047] The connecting piece can be a bolt or a flexible cable tie. The current detection element 3 is also provided with a connecting hole 11. When the position of the connecting hole 11 corresponds to the positioning hole 52, the current detection element 3 can be directly fixed on the positioning bracket 5 by a bolt. When the position of the connecting hole 11 and the positioning piece cannot be accurately positioned, a flexible cable tie can be used to bind and fix the current detection element 3 on the positioning bracket 5.

[0048] like Figures 2 to 5 As shown, the current testing tool 100 provided in the present application has at least two connection holes 11 opened on the shell 1, and a fixing part 6 is provided at the connection hole 11 and / or inside the shell 1, and the shielding layer 202 of the wiring harness 200 to be tested is connected to the shell 1 through the fixing part 6 to ensure the connection reliability between the shielding layer 202 of the wiring harness 200 to be tested and the shell 1, thereby ensuring the smoothness of the induced current transmission path.

[0049] Alternatively, if Figure 4 and Figure 5 As shown, the current testing tool 100 provided by the present application, wherein the fixing part 6 is a wiring harness connector 61, and the wiring harness connector 61 is fixedly installed in the connecting hole 11. When the outer diameter of the wiring harness 200 to be tested is matched with the aperture of the hole on the wiring harness connector 61, the wiring harness connector 61 can be directly used to pass the wiring harness 200 to be tested through the wiring harness connector 61, the shielding layer 202 of the wiring harness 200 to be tested is connected to the wiring harness connector 61, and the wire core 201 of the wiring harness 200 to be tested passes through the connecting hole 11 and extends into the interior of the shell 1 and is connected to the conductive part 2.

[0050] Alternatively, if Figure 4 and Figure 5As shown, the current test tooling 100 provided by the present application. Among them, the fixing member 6 is a fixing bracket 62, and the fixing bracket 62 is fixedly installed on the inner surface of the housing 1 by welding or bonding. When the outer diameter of the wire harness 200 to be tested does not match the aperture of the perforation on the wire harness connector 61 and the aperture of the connection hole 11 on the housing 1, for example, when the outer diameter of the wire harness 200 to be tested is larger than the aperture of the perforation and smaller than the aperture of the connection hole 11, the wire harness 200 to be tested cannot be fixed at the connection hole 11. At this time, the wire harness 200 to be tested can be passed through the connection hole 11, and the wire harness 200 to be tested can be bent so that the shielding layer 202 of the wire harness 200 to be tested is in contact with the fixing bracket 62, and the core 201 of the wire harness 200 to be tested is in contact with the conductive member 2, so as to fix the wire harness 200 to be tested.

[0051] The current test tooling 100 of the embodiment of the present application is connected in series in the wire harness 200 to be tested. By arranging a conductive member 2 spaced from the housing 1 inside the housing 1, and connecting the shielding layer 202 of the wire harness 200 to be tested in series with the housing 1, and connecting the core 201 of the wire harness 200 to be tested in series with the conductive member 2. Since there is no contact between the conductive member 2 and the housing 1, it is equivalent to separating the current transmitted by the wire harness 200 to be tested from the induced current generated by the shielding layer 202. At this time, the current detection element 3 is connected to the conductive member 2 and detects the current passing through the conductive member 2, which is equivalent to only detecting the current passing through the core 201 of the wire harness 200 to be tested, thereby effectively avoiding the interference of the induced current in the shielding layer 202 on the current detection result and improving the accuracy of the current detection result.

[0052] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, the elements defined by the statement "including..." do not exclude the existence of additional identical elements in the process, method, article or device including the said elements.

Claims

1. A current testing tool, characterized in that: The current testing tool is connected in series to the wiring harness to be tested, and the current testing tool comprises: A housing connected in series with the shielding layer of the wiring harness to be tested; A conductive member is disposed inside the housing and spaced apart from the inner surface of the housing, and the conductive member is connected in series with the core of the wiring harness to be tested; A current detection element is disposed inside the housing and connected to the conductive member. The current detection element is configured to detect a current passing through the conductive member.

2. The current testing tool according to claim 1, characterized in that: An insulating seat is fixedly provided inside the shell, and the conductive member is detachably mounted on the insulating seat.

3. The current testing tool according to claim 2, characterized in that: Two insulating seats are provided, and the two insulating seats are arranged at intervals. Two ends of the conductive member are respectively connected to the two insulating seats. The current detection element is arranged between the two insulating seats, and the conductive member passes through the current detection element.

4. The current testing tool according to claim 1, characterized in that: The conductive member is a metal connecting bar or a metal conductive wire.

5. The current testing tool according to claim 1, characterized in that: A positioning bracket is provided inside the shell, and the current detection element is detachably mounted on the positioning bracket.

6. The current testing tool according to claim 5, characterized in that: The positioning bracket is provided with a through hole, along the through direction of the through hole, the projection of the current detection element at least partially falls into the projection of the through hole, and the conductive member passes through the through hole and is connected to the current detection element.

7. The current testing tool according to claim 5, characterized in that: The positioning bracket is provided with a plurality of positioning holes, and the current detection element is detachably connected to the positioning bracket at at least some of the positioning holes through a connecting piece.

8. The current testing tool according to claim 1, characterized in that: At least two connection holes are provided on the shell, and fixing pieces are provided at the connection holes and / or inside the shell, and the shielding layer of the wiring harness to be tested is connected to the shell through the fixing pieces.

9. The current testing tool according to claim 8, characterized in that: The fixing part is a wiring harness connector, which is fixedly installed in the connecting hole. The wiring harness to be tested passes through the wiring harness connector, the shielding layer of the wiring harness to be tested is connected to the wiring harness connector, and the wire core of the wiring harness to be tested passes through the connecting hole and extends into the interior of the shell to connect with the conductive part.

10. The current testing tool according to claim 8, characterized in that: The fixing member is a fixing bracket, which is fixedly mounted on the inner surface of the shell, the wiring harness to be tested passes through the connecting hole, the shielding layer of the wiring harness to be tested is connected to the fixing bracket, and the wire core of the wiring harness to be tested is connected to the conductive member.

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