A transmission coil batch test tool

Abstract

The utility model provides a transmission coil batch test tool, include: power supply layer, it contains multiple for setting the test area of measured transmitting coil, each test area is preset with power supply unit, positioning unit and first indicating unit, multiple power supply units are connected to the level power supply end of power supply layer in parallel, set in the detection layer below power supply layer, it includes multiple with test area opposite setting detection area, each detection area is preset with detection unit, detection unit is opposite setting with positioning unit, and the output of detection unit is electrically connected to corresponding first indicating unit, support structure is the multi -surface structure or multilayer structure for setting power supply layer and detection layer respectively to adjust the vertical relative distance between power supply layer and detection layer, the utility model discloses can install multiple to be measured mutual -induction coil fast, the relative distance of mutual -induction coil is adjusted uniformly to carry out functional test or ageing test to it simultaneously to improve the test efficiency of mutual -induction coil.

Description

Technical Field

[0001] This utility model relates to the field of electronic product testing fixtures, and in particular to a batch testing fixture for transmission coils. Background Technology

[0002] Wireless power transmission has become a popular modern energy supply method, particularly common in medical power supply and smart device charging. Its basic principle involves the transmission of electrical energy through electromagnetic conversion using two opposing mutually inductant coils (or transmission coils, including a transmitting coil and a receiving coil). Therefore, efficiently performing batch testing of these mutually inductant coils is a pressing need in this field. Utility Model Content

[0003] To efficiently perform batch testing of mutual inductance coils, this utility model proposes a batch testing fixture for transmission coils, comprising: a power supply layer, which includes multiple test areas for setting up the transmitting coil under test, each test area having a pre-set power supply unit, a positioning unit, and a first indicator unit, the multiple power supply units being connected in parallel to the hierarchical power supply terminal of the power supply layer; a detection layer disposed below the power supply layer, the detection layer including multiple detection areas disposed opposite to the test areas, each detection area having a pre-set detection unit, the detection unit being disposed opposite to the positioning unit, and the output terminal of the detection unit being electrically connected to the corresponding first indicator unit; and a support structure, the support structure being a multi-faceted or multi-layered structure, used to separately set up the power supply layer and the detection layer to adjust the vertical relative distance between the power supply layer and the detection layer.

[0004] In one or more embodiments, the support structure includes: multiple sets of boss positioning posts of different heights, each set having multiple boss positioning posts of the same height, each boss positioning post including upper and lower boss surfaces; or a drawer structure, the drawer structure including at least one drawer layer with adjustable height.

[0005] In one or more embodiments, the multi-layer drawer structure includes: a frame body, the frame body being a rectangular hexahedral frame composed of four sliding pillars, an upper top plate, and a lower bottom plate; an adjustable slide, the two ends of which are movably mounted on two adjacent sliding pillars, and a threaded hole in the middle of the adjustable slide; and an adjusting rod, the adjusting rod including a threaded end and a handle end, the adjusting rod being mounted on the upper bottom surface of the frame body via a bearing, and its threaded end being threadedly connected to the threaded hole in the middle of the adjustable slide, so as to adjust the height of the adjustable slide by rotating the handle end.

[0006] In one or more embodiments, all four sliding columns are provided with height markings.

[0007] In one or more embodiments, the power supply layer further includes: a plurality of redundantly configured hierarchical power supply terminals, wherein the plurality of power supply units are respectively connected in parallel with the plurality of hierarchical power supply terminals.

[0008] In one or more embodiments, the power supply layer further includes: a power indicator unit disposed near each of the layer power supply terminals, each of the power indicator units being electrically connected to its nearby layer power supply terminal, for indicating the power supply status of the corresponding layer power supply terminal.

[0009] In one or more embodiments, the power supply layer further includes: a plurality of coil fixing tabs corresponding to the test area, one end of the coil fixing tabs being fixed to the surface of the power supply layer by a pivot connection, and the other end being elastically abutting against the surface of the power supply layer.

[0010] In one or more embodiments, the power supply unit includes a quick-connect male connector or a quick-connect female connector; the positioning unit includes a magnetizable positioning post or a magnetic positioning post, the diameter of which is equivalent to the inner diameter of the transmitting coil being tested; the first indicating unit includes an LED light and / or a digital display unit.

[0011] In one or more embodiments, the magnetizable positioning post or magnetic positioning post is provided with a central through hole.

[0012] In one or more embodiments, the power supply layer further includes a second indicator unit, the second indicator unit comprising: a voltage divider resistor and an LED connected in series, the other ends of the voltage divider resistor and the LED being electrically connected to the output terminal of the detection unit, respectively.

[0013] The beneficial effects of this utility model include: the batch testing fixture for transmission coils proposed in this utility model can quickly install multiple mutual inductance coils to be tested, and uniformly adjust the relative distance of the mutual inductance coils to simultaneously perform functional testing or aging testing, thereby improving the testing efficiency of mutual inductance coils. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the power supply layer in an embodiment of the present invention; Figure 2 This is a schematic diagram of the detection layer in an embodiment of the present invention; Figure 3This is a schematic diagram of the drawer structure according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure of the boss positioning post according to an embodiment of the present utility model.

[0016] The meanings of the reference numerals in the above figures are as follows: power supply layer 100, test area 110, power supply unit 111, positioning unit 112, first indicator unit 113, second indicator unit 114, layer power supply end 115, power indicator unit 116, coil fixing lever 117, detection layer 200, detection area 210, detection unit 211, support structure 300, sliding column 311, upper bottom surface 312, lower bottom surface 313, adjustable slide 320, support plate 321, adjusting rod 330, threaded end 331, handle end 332. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to specific examples and accompanying drawings.

[0018] It should be noted that all uses of "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of the present invention. Subsequent embodiments will not explain this in detail.

[0019] like Figure 1 and Figure 2 As shown, this utility model proposes an embodiment of a batch testing fixture for transmission coils, comprising: a power supply layer 100, which includes multiple test areas 110 for setting the transmitting coil under test. Each test area 110 is pre-set with a power supply unit 111, a positioning unit 112, and a first indicator unit 113. The multiple power supply units 111 are connected in parallel to the hierarchical power supply terminal of the power supply layer 100; a detection layer 200 disposed below the power supply layer, which includes multiple detection areas 210 disposed opposite to the test areas 110. Each detection area 210 is pre-set with a detection unit 211. The detection unit 211 is disposed opposite to the positioning unit 112, and the output terminal of the detection unit 211 is electrically connected to the corresponding first indicator unit 113; and a support structure 300, which is a multi-faceted or multi-layered structure, used to respectively set the power supply layer 100 and the detection layer 200 to adjust the vertical relative distance between the power supply layer 100 and the detection layer 200. Specifically, in this embodiment, the vertical relative distance between the power supply layer 100 and the detection layer 200 can be adjusted by the support structure 300, thereby simulating the transmission performance of the mutual inductance coils at different distances and realizing batch testing.

[0020] In one embodiment, the support structure 300 includes: multiple sets of boss positioning posts with different heights, each set having multiple boss positioning posts with the same height, each boss positioning post including upper and lower boss surfaces; or a drawer structure, the drawer structure including at least one layer of height-adjustable drawer.

[0021] In one or more embodiments, such as Figure 3 As shown, the drawer structure includes: a frame body 310, which is a rectangular hexahedral frame composed of four sliding pillars 311, an upper top plate 312, and a lower bottom plate 313; an adjustable slide 320, which is horizontally positioned and movably threaded through two adjacent sliding pillars 311 at both ends, with a threaded hole in the middle; and an adjusting rod 330, which includes a threaded end 331 and a handle end 332. The adjusting rod 330 passes through the upper bottom surface 312 of the frame body 310 via a bearing, and its threaded end 331 is threadedly connected to the threaded hole in the middle of the adjustable slide, so that the height of the adjustable slide 320 can be adjusted by rotating the handle end 332. The upper top plate 312 needs to be made of transparent material to facilitate observation of the indicating unit. Specifically, in this embodiment, the detection layer 200 can be placed on the lower base plate 313 and the power supply layer 100 can be placed on the adjustable slide 320, or the power supply layer 100 can be placed on the lower base plate 313 and the detection layer 200 can be placed on the adjustable slide 320. In this case, the detection layer 200 can be used to set another detection object - the receiving coil.

[0022] In one embodiment, the adjustable slide 320 has a support plate 321 in the middle. The support plate 321 is made of non-metallic material and is used to support the power supply layer or the detection layer to prevent it from deforming.

[0023] In one embodiment, all four sliding pillars 311 are provided with height markings. Specifically, setting height markings helps to quickly adjust the relative distance and level between the power supply layer 100 and the detection layer 200.

[0024] In one or more embodiments, the power supply layer 100 further includes a plurality of fixing holes evenly distributed on the board surface for connection with the detection layer via a plurality of boss positioning posts. Specifically, before use, the power supply layer 100 and the detection layer 200 need to be assembled. The assembly process includes installing boss positioning posts at corresponding positions on the detection layer 100, the structure of which is as follows: Figure 4 As shown, the positioning holes 114 on the power supply layer 100 are then aligned with the boss positioning post for installation, ensuring that the plate surface of the power supply layer 100 and the platform surface of the boss positioning post are tightly fitted to ensure that the power supply layer 100 and the detection layer 200 are set parallel to each other. The boss positioning post plays a dual role of limiting height and limiting position.

[0025] In one embodiment, the batch testing fixture for transmission coils of this utility model further includes a support layer 300, which is disposed below the detection layer 200 and has multiple pre-set fixing holes for replaceably fixing multiple boss positioning posts. Specifically, since the power supply layer 100 and the detection layer 200 are PCB boards, their support is relatively weak and they are prone to deformation when the board surface is large. Therefore, in this embodiment, a support layer 300 is provided below the detection layer 200. The material of the support layer 300 can be bakelite, which is used to facilitate fixing multiple boss positioning posts and prevent the detection layer 200 from deforming due to uneven placement surface.

[0026] In one embodiment, the power supply layer 100 further includes: a plurality of redundantly configured tiered power supply terminals 115, with a plurality of power supply units 111 connected in parallel to the plurality of tiered power supply terminals 115 respectively. Specifically, the purpose of providing a plurality of tiered power supply terminals 115 in this embodiment is to prevent the entire power supply layer from becoming unusable due to damage to the tiered power supply terminals 115, thereby improving the reliability and durability of the power supply layer.

[0027] In an optional implementation, multiple power supply terminals 115 can independently power test areas 110 in different groups, thereby enabling multiple transmission power tests on a single power supply layer 100 board, and determining the optimal transmission power by comparing the received power of the detection unit under different transmission power.

[0028] In one embodiment, the power supply layer 100 further includes a power indicator unit 116 disposed near each layer power supply terminal 115, each power indicator unit being electrically connected to the layer power supply terminal 115 nearby, for indicating the power supply status of the corresponding layer power supply terminal 115.

[0029] In one embodiment, the power supply layer 100 further includes a plurality of coil fixing tabs 117 disposed corresponding to the test area. One end of each coil fixing tab 117 is pivotally fixed to the surface of the power supply layer, and the other end elastically abuts against the surface of the power supply layer. Specifically, the function of the coil fixing tabs 117 is to ensure the flatness of the object under test—the transmitting coil—thereby ensuring the effective area of ​​its magnetic field generation and its relative distance from the detection unit 211, thereby ensuring the accuracy of the detection.

[0030] In one embodiment, the detection layer 200 further includes a third indicator unit disposed in each detection area 210, the third indicator unit being electrically connected to the output terminal of the detection unit 211. In this embodiment, the detection layer 200 can be disposed above the power supply layer 100 to use the receiving coil as the detection object.

[0031] In one embodiment, when the detection layer 200 is also used to test the receiving coil, its surface should also be provided with a coil fixing lever, and multiple quick-connect connectors for quickly connecting the receiving coil to the first indicator unit, the second indicator unit, or the third indicator unit.

[0032] In one embodiment, the power supply unit 100 includes a quick-connect male connector or a quick-connect female connector. In an optional embodiment, the quick-connect male connector or quick-connect female connector may be a magnetic quick connector, thereby enabling rapid replacement of the object under test to improve testing efficiency.

[0033] In one embodiment, the positioning unit 112 includes a magnetizable positioning post or a magnetic positioning post, wherein the diameter of the various positioning posts is approximately equal to the inner diameter of the transmitting coil under test. Specifically, the magnetizable positioning post or the magnetic positioning post serves two purposes: firstly, to fix the object under test—the transmitting coil—and secondly, to provide magnetic guidance.

[0034] In one embodiment, the magnetizable positioning post or magnetic positioning post has a central through hole for detachable fixing to the power supply layer 100 by setting a bolt at the central through hole, facilitating subsequent position adjustment. For magnetizable positioning posts or magnetic positioning posts without a central through hole, they must be fixed to the power supply layer 100 by adhesive bonding. Furthermore, in actual products, since the internal and external units need to define the relative positions of the receiving and transmitting coils by a magnet positioned at the center of the transmission coil, the inclusion of a magnetizable positioning post or magnetic positioning post also serves to replicate the application scenario.

[0035] In one embodiment, the detection unit 211 includes a receiving coil, which can also be the object under test. Specifically, when the detection unit 211 is replaced by the receiving coil to be tested, it is also necessary to provide a magnetizable positioning post or magnetic positioning post for fixing the receiving coil, a coil fixing lever, and a quick-connect plug for connecting the receiving coil to the first indicating unit 113.

[0036] In one embodiment, the first indicating unit 113 includes an LED light and / or a display unit. Specifically, in this embodiment, the display unit has a built-in control chip and a reference voltage for displaying the real-time voltage and / or real-time current of the detection unit 211.

[0037] In one embodiment, the power supply layer 100 further includes a second indicator unit 114, which comprises a voltage divider resistor and an LED connected in series, with the other ends of the voltage divider resistor and the LED electrically connected to the output terminal of the detection unit, respectively. Specifically, in this embodiment, the voltage divider resistor shares the power with the corresponding LED, so that the LED can only be lit when the received power is greater than a preset value, thereby verifying the received power on the detection unit side.

[0038] In one alternative implementation, the voltage divider resistor can be selected as an adjustable resistor, thereby adjusting the power distributed across the voltage divider resistor.

[0039] The above are exemplary embodiments disclosed in this utility model. However, it should be noted that various changes and modifications can be made without departing from the scope of the embodiments of this utility model as defined by the claims. The functions, steps, and / or actions of the methods according to the disclosed embodiments described herein do not need to be performed in any particular order.

[0040] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the framework of the present invention, technical features of the above embodiments or different embodiments can also be combined, and many other variations of different aspects of the present invention exist, which are not provided in the details for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A batch testing fixture for transmission coils, characterized in that, include: The power supply layer includes multiple test areas for setting the transmitting coil under test. Each test area is pre-set with a power supply unit, a positioning unit and a first indicator unit. The multiple power supply units are connected in parallel to the hierarchical power supply terminal of the power supply layer. The detection layer is located below the power supply layer. The detection layer includes multiple detection areas that are arranged opposite to the test area. Each detection area has a preset detection unit. The detection unit is arranged opposite to the positioning unit, and the output terminal of the detection unit is electrically connected to the corresponding first indicator unit. A support structure, which is a multi-faceted or multi-layered structure, is used to respectively house the power supply layer and the detection layer, so as to adjust the vertical relative distance between the power supply layer and the detection layer.

2. The batch testing fixture for transmission coils according to claim 1, characterized in that, The supporting structure includes: Multiple sets of boss positioning posts with different heights, each set having multiple boss positioning posts of the same height, each boss positioning post comprising upper and lower boss surfaces; or A drawer structure, wherein the drawer structure includes at least one height-adjustable drawer layer.

3. The batch testing fixture for transmission coils according to claim 2, characterized in that, The drawer structure includes: The main frame includes a rectangular hexahedron frame composed of four sliding columns, an upper top plate, and a lower bottom plate. An adjustable slide is provided, wherein the adjustable slide is horizontally arranged, and its two ends are movably inserted through two adjacent sliding columns, and a threaded hole is provided in the middle of the adjustable slide. An adjusting rod, comprising a threaded end and a handle end, is mounted on the upper bottom surface of the frame body via a bearing. Its threaded end is threadedly connected to a threaded hole in the middle of the adjustable slide, so that the height of the adjustable slide can be adjusted by rotating the handle end.

4. The batch testing fixture for transmission coils according to claim 3, characterized in that, All four sliding columns are equipped with height markings.

5. The batch testing fixture for transmission coils according to claim 1, characterized in that, The power supply layer further includes: multiple redundantly configured hierarchical power supply terminals, and multiple power supply units are respectively connected in parallel with the multiple hierarchical power supply terminals.

6. The batch testing fixture for transmission coils according to claim 1 or 5, characterized in that, The power supply layer further includes: a power indicator unit disposed near each of the power supply terminals of the layer, wherein each power indicator unit is electrically connected to the power supply terminal of the layer nearby, and is used to indicate the power supply status of the corresponding power supply terminal.

7. The batch testing fixture for transmission coils according to claim 6, characterized in that, The power supply layer further includes: multiple coil fixing tabs corresponding to the test area, one end of each coil fixing tab being fixed to the surface of the power supply layer via a pivot connection, and the other end being elastically abutting against the surface of the power supply layer.

8. The batch testing fixture for transmission coils according to claim 1, characterized in that, The power supply unit includes a quick-connect male connector or a quick-connect female connector; The positioning unit includes a magnetizable positioning post or a magnetic positioning post, and the diameter of the above-mentioned positioning posts is equivalent to the inner diameter of the transmitting coil being tested. The first indicating unit includes: an LED light and / or a digital display unit.

9. The batch testing fixture for transmission coils according to claim 8, characterized in that, The magnetizable or magnetic positioning post is provided with a central through hole.

10. The batch testing fixture for transmission coils according to claim 8, characterized in that, The power supply layer further includes a second indicator unit, the second indicator unit comprising: A voltage divider resistor and an LED are connected in series, and the other ends of the voltage divider resistor and the LED are respectively electrically connected to the output terminal of the detection unit.

Images