A charger electrical performance test connection method and system

Abstract

A charger electrical performance test connection method and system, the method comprising: fixing the charger so that a single-phase two-pole plug provided on one side of the charger faces vertically upward, and the other side of the charger is connected to a DC load terminal; providing an indirect component, on which a single-phase two-pole spring pin is provided, and the opening distance of the single-phase two-pole spring pin is the same as the opening distance of the single-phase two-pole plug; the top of the single-phase two-pole spring pin is a T-shaped top, and the tail end of the single-phase two-pole spring pin is connected to a single-phase AC power supply terminal; moving the indirect component so that the end face of the T-shaped top of the single-phase two-pole spring pin on the indirect component is in vertical contact with the single-phase two-pole plug to perform an electrical performance test on the charger. The spring pin is used to vertically contact the single-phase two-pole plug, because the spring pin is in non-rigid contact, that is, it will not cause structural damage to the single-phase two-pole plug in the vertical direction, and can effectively avoid deformation of the single-phase two-pole plug caused by the traditional socket connection method in the industry, and avoid the opening distance of the single-phase two-pole plug exceeding the requirements of the national standard GB1002‑2008.

Description

Technical Field

[0001] The present invention relates to the field of testing technology, and in particular to a charger electrical performance testing connection method and system. Background Art

[0002] At present, the chargers for domestic mobile phones, tablet computers and other electronic devices are generally Figure 1 The single-phase two-pole plug shown. According to the national standard GB1002-2008, Figure 1 The requirement for the gap distance F of the single-phase two-pole plug (also known as AC PIN) of the charger shown is 12.7±0.14mm. The gap distance F of the single-phase two-pole plug is affected by many factors such as plastic mold design, injection molding, process control, etc., and is also affected by the traditional electrical performance test connection method in the later assembly process.

[0003] Among them, the industry's traditional electrical performance test connection method is: directly insert the single-phase two-pole plug of the charger into a fixed socket. Due to the rigid squeezing of the socket spring during the electrical performance test, it is very easy to cause the opening distance F of the single-phase two-pole plug to change beyond the national standard GB1002-2008 requirements. Summary of the invention

[0004] The embodiment of the invention discloses a charger electrical performance test connection method and system, which can prevent the opening distance of a single-phase two-pole plug from exceeding the requirements of the national standard GB1002-2008.

[0005] A first aspect of an embodiment of the present invention discloses a charger electrical performance test connection method, the method comprising:

[0006] The charger is fixed so that the single-phase two-pole plug provided on one side of the charger is vertically facing upward, and the other side of the charger is used to connect to the DC load terminal;

[0007] Provide an indirect component, on which a single-phase two-pole spring pin is provided, and the opening distance of the single-phase two-pole spring pin is the same as the opening distance of the single-phase two-pole plug; wherein the top of the single-phase two-pole spring pin is a T-shaped top, and the tail end of the single-phase two-pole spring pin is used to connect to the single-phase AC power supply end;

[0008] The indirect component is moved so that the end surface of the T-shaped top end of the single-phase two-pole spring pin on the indirect component is in vertical contact with the single-phase two-pole plug to perform an electrical performance test on the charger.

[0009] As an optional implementation, in the first aspect of the embodiment of the present invention, the end face area of ​​the T-shaped top of the spring pin is larger than the end face area of ​​the plug; wherein the end face of the plug refers to a side face when the plug vertically contacts the end face of the T-shaped top of the spring pin.

[0010] As an optional implementation, in the first aspect of the embodiment of the present invention, the elastic needle includes:

[0011] A hollow cylindrical tube, wherein a first through hole is formed on a first side end surface of the cylindrical tube, and a second through hole is formed on a second side end surface of the cylindrical tube; wherein the center of the first through hole and the center of the second through hole are respectively passed through by the axis of the cylindrical tube;

[0012] A conductive connecting rod, the conductive connecting rod movably passes through the cylindrical tube through the first through hole and the second through hole;

[0013] The top end of the conductive connecting rod extends out of the first through hole, and the top end of the conductive connecting rod is a T-shaped top end; the tail end of the conductive connecting rod extends out of the second through hole, and the tail end of the conductive connecting rod is used to connect to a single-phase AC power supply terminal;

[0014] The tail end of the conductive connecting rod is a T-shaped tail end, and the end area of ​​the T-shaped tail end is greater than or equal to the end area of ​​the second side end surface of the cylindrical tube;

[0015] A plurality of springs are connected between the second side end surface of the cylindrical tube and the lower end surface of the T-shaped tail end;

[0016] When the end face of the T-shaped top end of the conductive connecting rod is in vertical contact with the plug, the plug pushes the conductive connecting rod to continue to extend out of the second through hole, so that the T-shaped tail end of the conductive connecting rod stretches the plurality of springs outward; during the process of stretching the plurality of springs outside the T-shaped tail end of the conductive connecting rod, if the T-shaped tail end is connected to a single-phase AC power supply end, the electrical performance of the charger is tested.

[0017] As an optional embodiment, in the first aspect of the embodiment of the present invention, when the end face of the T-shaped top end of the conductive connecting rod is separated from the vertical contact with the pin, the plurality of springs drive the conductive connecting rod to extend out of the first through-hole, and when the plurality of springs are in a natural state, the T-shaped top end of the conductive connecting rod extends out of the first through-hole.

[0018] As an optional implementation, in the first aspect of the embodiment of the present invention, the plurality of springs are evenly distributed around the conductive connecting rod extending out of the second through hole; and the cylindrical tube is a plastic cylindrical tube.

[0019] A second aspect of an embodiment of the present invention discloses a charger electrical performance test connection system, including a charger, a DC load terminal, an indirect component, and a single-phase AC power supply terminal, wherein:

[0020] The charger is fixed, a single-phase two-pole plug arranged on one side of the charger is vertically upward, and the other side of the charger is used to connect to a DC load terminal;

[0021] The indirect component is provided with a single-phase two-pole spring pin, and the opening distance of the single-phase two-pole spring pin is the same as the opening distance of the single-phase two-pole plug; wherein the top of the single-phase two-pole spring pin is a T-shaped top, and the tail end of the single-phase two-pole spring pin is used to connect the single-phase AC power supply end;

[0022] The electrical performance test of the charger is performed when the indirect component is moved so that the end surface of the T-shaped top end of the single-phase two-pole spring pin on the indirect component is in vertical contact with the single-phase two-pole plug.

[0023] As an optional implementation, in the second aspect of the embodiment of the present invention, the end face area of ​​the T-shaped top of the spring pin is larger than the end face area of ​​the plug; wherein the end face of the plug refers to a side face when the plug vertically contacts the end face of the T-shaped top of the spring pin.

[0024] As an optional implementation, in the second aspect of the embodiment of the present invention, the elastic needle includes:

[0025] A hollow cylindrical tube, wherein a first through hole is formed on a first side end surface of the cylindrical tube, and a second through hole is formed on a second side end surface of the cylindrical tube; wherein the center of the first through hole and the center of the second through hole are respectively passed through by the axis of the cylindrical tube;

[0026] A conductive connecting rod, the conductive connecting rod movably passes through the cylindrical tube through the first through hole and the second through hole;

[0027] The top end of the conductive connecting rod extends out of the first through hole, and the top end of the conductive connecting rod is a T-shaped top end; the tail end of the conductive connecting rod extends out of the second through hole, and the tail end of the conductive connecting rod is used to connect to a single-phase AC power supply terminal;

[0028] The tail end of the conductive connecting rod is a T-shaped tail end, and the end area of ​​the T-shaped tail end is greater than or equal to the end area of ​​the second side end surface of the cylindrical tube;

[0029] A plurality of springs are connected between the second side end surface of the cylindrical tube and the lower end surface of the T-shaped tail end;

[0030] When the end face of the T-shaped top end of the conductive connecting rod is in vertical contact with the plug, the plug pushes the conductive connecting rod to continue to extend out of the second through hole, so that the T-shaped tail end of the conductive connecting rod stretches the plurality of springs outward; during the process of stretching the plurality of springs outside the T-shaped tail end of the conductive connecting rod, if the T-shaped tail end is connected to a single-phase AC power supply end, the electrical performance of the charger is tested.

[0031] As an optional embodiment, in the second aspect of the embodiment of the present invention, when the end face of the T-shaped top end of the conductive connecting rod is separated from the vertical contact with the pin, the plurality of springs drive the conductive connecting rod to extend out of the first through-hole, and when the plurality of springs are in a natural state, the T-shaped top end of the conductive connecting rod extends out of the first through-hole.

[0032] As an optional implementation, in the second aspect of the embodiment of the present invention, the plurality of springs are evenly distributed around the conductive connecting rod extending out of the second through hole; and the cylindrical tube is a plastic cylindrical tube.

[0033] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0034] In the embodiment of the present invention, a spring pin is used to vertically contact the single-phase two-pole plug (i.e., AC PIN). Since the spring pin is in non-rigid contact, it will not cause structural damage to the single-phase two-pole plug in the vertical direction, and can effectively avoid deformation of the single-phase two-pole plug caused by the traditional socket connection method in the industry (i.e., deformation caused by squeezing of the socket spring sheet), thereby preventing the opening distance of the single-phase two-pole plug from exceeding the requirements of the national standard GB1002-2008. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a structural schematic diagram of a single-phase two-pole plug of a charger in the prior art;

[0037] Figure 2 It is a flow chart of a charger electrical performance test connection method disclosed in an embodiment of the present invention;

[0038] Figure 3 It is a structural schematic diagram of a charger electrical performance test connection system disclosed in an embodiment of the present invention;

[0039] Figure 4It is a structural schematic diagram of an indirect component disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] It should be noted that the terms "including" and "having" and any variations thereof in the embodiments of the present invention and the accompanying drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0042] The embodiment of the present invention discloses a charger electrical performance test connection method and system, which can prevent the opening distance of a single-phase two-pole plug from exceeding the requirements of the national standard GB1002-2008. Detailed descriptions are given below.

[0043] Embodiment 1

[0044] See also Figure 2 , Figure 2 FIG. 1 is a flow chart of a charger electrical performance test connection method disclosed in an embodiment of the present invention. Figure 2 As shown, the charger electrical performance test connection method may include the following steps:

[0045] 201. Fix the charger so that the single-phase two-pole plug provided on one side of the charger faces vertically upward, and the other side of the charger is used to connect the DC load terminal.

[0046] In the embodiment of the present invention, the tester can fix the charger on the electrical performance test platform so that the single-phase two-pole plug provided on one side of the charger faces vertically upward, and the other side of the charger can be connected to the DC load end through the test connection line.

[0047] 202. Provide an indirect component, on which a single-phase two-pole spring pin is provided, and the opening distance of the single-phase two-pole spring pin is the same as the opening distance of the above-mentioned single-phase two-pole plug; wherein the top of the single-phase two-pole spring pin is a T-shaped top, and the tail end of the single-phase two-pole spring pin is used to connect to the single-phase AC power supply terminal.

[0048] In the embodiment of the present invention, the end surface area of ​​the T-shaped top of the spring pin is larger than the end surface area of ​​the plug; wherein the end surface of the plug refers to a side surface when the plug vertically contacts the end surface of the T-shaped top of the spring pin.

[0049] 203. Move the indirect component so that the end surface of the T-shaped top of the single-phase two-pole spring pin on the indirect component is in vertical contact with the single-phase two-pole plug, and then test the electrical performance of the charger.

[0050] As an optional embodiment, each spring pin may include a hollow cylindrical tube and a conductive connecting rod, wherein:

[0051] A hollow cylindrical tube, wherein a first through hole is formed on a first side end face of the cylindrical tube, and a second through hole is formed on a second side end face of the cylindrical tube; wherein the first through hole and the second through hole are of the same size, the area of ​​the first side end face and the area of ​​the second end face are the same, and the area of ​​the first side end face and the area of ​​the second end face are both larger than the hole area of ​​the first through hole and the hole area of ​​the second through hole; further, the center of the first through hole and the center of the second through hole are respectively passed through by the axis of the cylindrical tube; optionally, the indirect component may include a bearing plate, and the cylindrical tube may vertically pass through the bearing plate and be fixed on the bearing plate; wherein the distance between the axis centers of the two cylindrical tubes included in the single-phase two-pole elastic needle is the opening distance of the single-phase two-pole elastic needle;

[0052] A conductive connecting rod, the conductive connecting rod movably passes through the cylindrical tube through the first through hole and the second through hole;

[0053] The top of the conductive connecting rod extends out of the first through hole, and the top of the conductive connecting rod is a T-shaped top; the tail of the conductive connecting rod extends out of the second through hole, and the tail of the conductive connecting rod is used to connect to a single-phase AC power supply terminal;

[0054] Wherein, the tail end of the conductive connecting rod is a T-shaped tail end, and the end area of ​​the T-shaped tail end is greater than or equal to the end area of ​​the second side end surface of the cylindrical tube;

[0055] Wherein, a plurality of springs are connected between the second side end surface of the cylindrical tube and the lower end surface of the T-shaped tail end;

[0056] When the end face of the T-shaped top of the conductive connecting rod is in vertical contact with the plug, the plug pushes the conductive connecting rod to continue to extend out of the second through hole, so that the T-shaped tail end of the conductive connecting rod stretches the above-mentioned multiple springs outward; during the process of stretching multiple springs outside the T-shaped tail end of the conductive connecting rod, if the T-shaped tail end is connected to a single-phase AC power supply end, the electrical performance of the charger is tested.

[0057] When the end surface of the T-shaped top of the conductive connecting rod is in vertical contact with the plug and separated, the plurality of springs drive the conductive connecting rod to extend out of the first through hole, and when the plurality of springs are in a natural state, the T-shaped top of the conductive connecting rod extends out of the first through hole, and the T-shaped tail of the conductive connecting rod still extends out of the second through hole. The natural state of the spring refers to the state of the spring without any external force.

[0058] In an embodiment of the present invention, the plurality of springs are evenly distributed around the conductive connecting rod extending out of the second through hole, and the number of the plurality of springs is at least two, which is not limited in the embodiment of the present invention; wherein the cylindrical tube may be a plastic cylindrical tube.

[0059] In the embodiment of the present invention, a spring pin is used to vertically contact the single-phase two-pole plug (i.e., AC PIN). Since the spring pin is in non-rigid contact, it will not cause structural damage to the single-phase two-pole plug in the vertical direction, and can effectively avoid deformation of the single-phase two-pole plug caused by the traditional socket connection method in the industry (i.e., deformation caused by squeezing of the socket spring sheet), thereby preventing the opening distance of the single-phase two-pole plug from exceeding the requirements of the national standard GB1002-2008.

[0060] Embodiment 2

[0061] See also Figure 3 , Figure 3 Schematic diagram of a charger electrical performance test connection system disclosed in an embodiment of the present invention. Figure 3 As shown, the charger electrical performance test connection system may include a charger 21, a DC load terminal 22, an indirect component 23, and a single-phase AC power supply terminal 24, wherein:

[0062] The charger 21 is fixed, the single-phase two-pole plug 211 provided on one side of the charger 21 is vertically upward, and the other side of the charger 21 is used to connect the DC load terminal 22; for example, the tester can fix the charger 21 on the electrical performance test platform, so that the single-phase two-pole plug 211 provided on one side of the charger 21 is vertically upward, and the other side of the charger 21 can be connected to the DC load terminal 22 through the test connection line;

[0063] The indirect component 23 is provided with a single-phase two-pole spring pin 231, and the opening distance of the single-phase two-pole spring pin 231 is the same as the opening distance of the single-phase two-pole plug 211; wherein, the top of the single-phase two-pole spring pin 231 is a T-shaped top, and the tail end of the single-phase two-pole spring pin 231 is used to connect the single-phase AC power supply terminal 24;

[0064] When the indirect component 23 is moved so that the end surface of the T-shaped top of the single-phase two-pole spring pin 231 on the indirect component 23 is in vertical contact with the single-phase two-pole plug 211, the electrical performance test of the charger 21 is performed.

[0065] In the embodiment of the present invention, the end surface area of ​​the T-shaped top of the spring pin 231 is larger than the end surface area of ​​the plug 211, thereby facilitating the vertical contact between the end surface of the T-shaped top of the single-phase two-pole spring pin 231 and the single-phase two-pole plug 211; wherein, the end surface of the plug 211 refers to a side surface when the plug 211 vertically contacts the end surface of the T-shaped top of the spring pin 231.

[0066] As an optional implementation, Figure 4 As shown, each spring pin 231 may include a hollow cylindrical tube 2311 and a conductive connecting rod 2312, wherein:

[0067] A hollow cylindrical tube 2311, wherein a first through hole is formed on a first side end face of the cylindrical tube 2311, and a second through hole is formed on a second side end face of the cylindrical tube 2311; wherein the first through hole and the second through hole are of the same size, the area of ​​the first side end face and the area of ​​the second end face are the same, and the area of ​​the first side end face and the area of ​​the second end face are both larger than the hole area of ​​the first through hole and the hole area of ​​the second through hole; further, the center of the first through hole and the center of the second through hole are respectively passed through by the axis of the cylindrical tube 2311; optionally, the indirect component 23 may include a bearing plate, and the cylindrical tube 2311 may vertically pass through the bearing plate and be fixed on the bearing plate; wherein the distance between the axis centers of the two cylindrical tubes 2311 included in the single-phase two-pole elastic needle 231 is the opening distance of the single-phase two-pole elastic needle 231;

[0068] A conductive connecting rod 2312, the conductive connecting rod 2312 movably passes through the cylindrical tube 2311 through the first through hole and the second through hole;

[0069] The top of the conductive connecting rod 2312 extends out of the first through hole, and the top of the conductive connecting rod 2312 is a T-shaped top; the tail of the conductive connecting rod 2312 extends out of the second through hole, and the tail of the conductive connecting rod 2312 is used to connect the single-phase AC power supply terminal 24;

[0070] Optionally, the tail end of the conductive connecting rod 2312 is a T-shaped tail end, and the end area of ​​the T-shaped tail end is greater than or equal to the end area of ​​the second side end surface of the cylindrical tube 2311;

[0071] Optionally, a plurality of springs 2313 are connected between the second side end surface of the cylindrical tube 2311 and the lower end surface of the T-shaped tail end;

[0072] When the end face of the T-shaped top of the conductive connecting rod 2312 is in vertical contact with the plug 211, the plug 211 pushes the conductive connecting rod 2312 to continue to extend out of the second through hole, so that the T-shaped tail end of the conductive connecting rod 2312 stretches the above-mentioned multiple springs 2313 outward; during the process of stretching the multiple springs 2313 outside the T-shaped tail end of the conductive connecting rod 2312, if the T-shaped tail end is connected to the single-phase AC power supply terminal 24, the electrical performance of the charger 21 is tested.

[0073] When the end surface of the T-shaped top of the conductive connecting rod 2312 is in vertical contact and separation with the plug 211, the plurality of springs 2313 drive the conductive connecting rod 2312 to extend out of the first through hole, and when the plurality of springs 2313 are in a natural state, the T-shaped top of the conductive connecting rod 2312 extends out of the first through hole, and the T-shaped tail of the conductive connecting rod 2312 still extends out of the second through hole. The natural state of the spring 2313 refers to the state of the spring 2313 without any external force.

[0074] In the embodiment of the present invention, the above-mentioned multiple springs 2313 are evenly distributed around the conductive connecting rod 2312 extending out of the second perforation, and the number of the above-mentioned multiple springs 2313 is at least two or more, which is not limited in the embodiment of the present invention; wherein, the cylindrical tube 2311 can be a plastic cylindrical tube.

[0075] As an optional embodiment, in order to more quickly achieve vertical contact between the end face of the T-shaped top of the single-phase two-pole elastic needle 231 and the single-phase two-pole plug 211, two cylindrical guide tubes can be arranged perpendicular to the supporting plate on one side surface of the supporting plate near the first perforation of the cylindrical tube 2311, each cylindrical guide tube respectively covers a portion of the cylindrical tube 2311 extending from the supporting plate, and the length of each cylindrical guide tube is greater than the length of the portion of the cylindrical tube 2311 extending from the supporting plate, and the diameter of each cylindrical guide tube is greater than the end face diameter of the T-shaped top of the conductive connecting rod 2312, and the diameter of each cylindrical guide tube is greater than the end face diameter of the plug 211, so that the plug 211 can quickly achieve vertical contact between the end face of the T-shaped top of the single-phase two-pole elastic needle 231 and the single-phase two-pole plug 211 under the guiding action of the cylindrical guide tube.

[0076] In the embodiment of the present invention, a spring pin is used to vertically contact the single-phase two-pole plug (i.e., AC PIN). Since the spring pin is in non-rigid contact, it will not cause structural damage to the single-phase two-pole plug in the vertical direction, and can effectively avoid deformation of the single-phase two-pole plug caused by the traditional socket connection method in the industry (i.e., deformation caused by squeezing of the socket spring sheet), thereby preventing the opening distance of the single-phase two-pole plug from exceeding the requirements of the national standard GB1002-2008.

[0077] As an optional implementation, in the embodiment of the present invention, a starting device can also be used to drive the conductive connecting rod 2312 to move up and down in the cylindrical tube 2311, which is not limited in the embodiment of the present invention.

[0078] The above is a detailed introduction to a charger electrical performance test connection method and system disclosed in an embodiment of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A charger electrical performance test connection method, characterized in that: The method comprises: The charger is fixed so that the single-phase two-pole plug provided on one side of the charger is vertically facing upward, and the other side of the charger is used to connect to the DC load terminal; Provide an indirect component, on which a single-phase two-pole spring pin is provided, and the opening distance of the single-phase two-pole spring pin is the same as the opening distance of the single-phase two-pole plug; wherein the top of the single-phase two-pole spring pin is a T-shaped top, and the tail end of the single-phase two-pole spring pin is used to connect to the single-phase AC power supply end; Moving the indirect component so that the end surface of the T-shaped top end of the single-phase two-pole spring pin on the indirect component is in vertical contact with the single-phase two-pole plug to perform an electrical performance test on the charger; Among them, the indirect component includes a bearing plate, and the single-phase two-pole spring needle includes a cylindrical guide tube and a cylindrical tube. The cylindrical tube vertically passes through the bearing plate and is fixed on the bearing plate. Each cylindrical guide tube respectively covers a portion of the cylindrical tube extending from the bearing plate, and the length of each cylindrical guide tube is greater than the length of the portion of the cylindrical tube extending from the bearing plate, so that the single-phase two-pole plug can quickly achieve vertical contact between the end face of the T-shaped top end of the single-phase two-pole spring needle and the single-phase two-pole plug under the guiding action of the cylindrical guide tube.

2. The charger electrical performance test connection method according to claim 1, characterized in that: The end surface area of ​​the T-shaped top of the spring pin is larger than the end surface area of ​​the plug; wherein the end surface of the plug refers to a side surface when the plug vertically contacts the end surface of the T-shaped top of the spring pin.

3. The charger electrical performance test connection method according to claim 1 or 2, characterized in that: The elastic needle comprises: A hollow cylindrical tube, wherein a first through hole is formed on a first side end surface of the cylindrical tube, and a second through hole is formed on a second side end surface of the cylindrical tube; wherein the center of the first through hole and the center of the second through hole are respectively passed through by the axis of the cylindrical tube; A conductive connecting rod, the conductive connecting rod movably passes through the cylindrical tube through the first through hole and the second through hole; The top end of the conductive connecting rod extends out of the first through hole, and the top end of the conductive connecting rod is a T-shaped top end; the tail end of the conductive connecting rod extends out of the second through hole, and the tail end of the conductive connecting rod is used to connect to a single-phase AC power supply terminal; The tail end of the conductive connecting rod is a T-shaped tail end, and the end area of ​​the T-shaped tail end is greater than or equal to the end area of ​​the second side end surface of the cylindrical tube; A plurality of springs are connected between the second side end surface of the cylindrical tube and the lower end surface of the T-shaped tail end; When the end face of the T-shaped top of the conductive connecting rod is in vertical contact with the pin, the pin pushes the conductive connecting rod to continue to extend out of the second through hole, so that the T-shaped tail end of the conductive connecting rod stretches the plurality of springs outward; during the process of stretching the plurality of springs outside the T-shaped tail end of the conductive connecting rod, if the T-shaped tail end is connected to a single-phase AC power supply end, the electrical performance of the charger is tested.

4. The charger electrical performance test connection method according to claim 3, characterized in that: When the end surface of the T-shaped top of the conductive connecting rod is in vertical contact and separation with the pin, the plurality of springs drive the conductive connecting rod to extend out of the first through hole. When the plurality of springs are in a natural state, the T-shaped top of the conductive connecting rod extends out of the first through hole.

5. The charger electrical performance test connection method according to claim 3 or 4, characterized in that: The plurality of springs are evenly distributed around the conductive connecting rod extending out of the second through hole; and the cylindrical tube is a plastic cylindrical tube.

6. A charger electrical performance test connection system, characterized in that: It includes a charger, a DC load terminal, an indirect component, and a single-phase AC power supply terminal, wherein: The charger is fixed, a single-phase two-pole plug arranged on one side of the charger is vertically upward, and the other side of the charger is used to connect to a DC load terminal; The indirect component is provided with a single-phase two-pole spring pin, and the opening distance of the single-phase two-pole spring pin is the same as the opening distance of the single-phase two-pole plug; wherein the top of the single-phase two-pole spring pin is a T-shaped top, and the tail end of the single-phase two-pole spring pin is used to connect the single-phase AC power supply end; When the indirect component is moved so that the end surface of the T-shaped top end of the single-phase two-pole spring pin on the indirect component is in vertical contact with the single-phase two-pole plug, the electrical performance test of the charger is performed; Among them, the indirect component includes a bearing plate, and the single-phase two-pole spring needle includes a cylindrical guide tube and a cylindrical tube. The cylindrical tube vertically passes through the bearing plate and is fixed on the bearing plate. Each cylindrical guide tube respectively covers a portion of the cylindrical tube extending from the bearing plate, and the length of each cylindrical guide tube is greater than the length of the portion of the cylindrical tube extending from the bearing plate, so that the single-phase two-pole plug can quickly achieve vertical contact between the end face of the T-shaped top end of the single-phase two-pole spring needle and the single-phase two-pole plug under the guiding action of the cylindrical guide tube.

7. The charger electrical performance test connection system according to claim 6, characterized in that: The end surface area of ​​the T-shaped top of the spring pin is larger than the end surface area of ​​the plug; wherein the end surface of the plug refers to a side surface when the plug vertically contacts the end surface of the T-shaped top of the spring pin.

8. The charger electrical performance test connection system according to claim 6 or 7, characterized in that: The elastic needle comprises: A hollow cylindrical tube, wherein a first through hole is formed on a first side end surface of the cylindrical tube, and a second through hole is formed on a second side end surface of the cylindrical tube; wherein the center of the first through hole and the center of the second through hole are respectively passed through by the axis of the cylindrical tube; A conductive connecting rod, the conductive connecting rod movably passes through the cylindrical tube through the first through hole and the second through hole; The top end of the conductive connecting rod extends out of the first through hole, and the top end of the conductive connecting rod is a T-shaped top end; the tail end of the conductive connecting rod extends out of the second through hole, and the tail end of the conductive connecting rod is used to connect to a single-phase AC power supply terminal; The tail end of the conductive connecting rod is a T-shaped tail end, and the end area of ​​the T-shaped tail end is greater than or equal to the end area of ​​the second side end surface of the cylindrical tube; A plurality of springs are connected between the second side end surface of the cylindrical tube and the lower end surface of the T-shaped tail end; When the end face of the T-shaped top of the conductive connecting rod is in vertical contact with the pin, the pin pushes the conductive connecting rod to continue to extend out of the second through hole, so that the T-shaped tail end of the conductive connecting rod stretches the plurality of springs outward; during the process of stretching the plurality of springs outside the T-shaped tail end of the conductive connecting rod, if the T-shaped tail end is connected to a single-phase AC power supply end, the electrical performance of the charger is tested.

9. The charger electrical performance test connection system according to claim 8, characterized in that: When the end surface of the T-shaped top of the conductive connecting rod is in vertical contact and separation with the pin, the plurality of springs drive the conductive connecting rod to extend out of the first through hole. When the plurality of springs are in a natural state, the T-shaped top of the conductive connecting rod extends out of the first through hole.

10. The charger electrical performance test connection system according to claim 8 or 9, characterized in that: The plurality of springs are evenly distributed around the conductive connecting rod extending out of the second through hole; and the cylindrical tube is a plastic cylindrical tube.

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