Charging pile convenient for high-voltage test

Abstract

The embodiment of the utility model relates to the technical field of charging pile safety performance testing, and discloses a charging pile convenient for high-voltage testing, which comprises a circuit board, and the circuit board is provided with a main circuit area and a grounding area; the main circuit area is used for controlling the charging state of the charging pile facilitating high-voltage testing, and the grounding area is used for leading large current generated by high voltage in the main circuit area to the ground. The device further comprises a first conductive block, a second conductive block and a metal conductive piece. The first conductive block is electrically connected with the main circuit area, and the second conductive block is electrically connected with the grounding area; the first conductive block and the second conductive block are arranged on the surface of the circuit board, and an open circuit is formed between the first conductive block and the second conductive block; and the metal conductive piece is detachably crimped on the surface of the circuit board and is used for electrically connecting the first conductive block and the second conductive block when being in contact with the surface of the circuit board. Through the above mode, the charging pile provided by the embodiment of the utility model does not damage the integrity of the circuit board, thereby reducing the difficulty and cost of a high-voltage test, and reducing the test time.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of charging pile safety performance testing, and particularly to a charging pile facilitating high-voltage testing. Background Art

[0002] In the technical field of electric vehicle charging infrastructure, charging piles installed outdoors face strict requirements for electromagnetic compatibility and lightning protection performance. Stable operation of charging piles in a complex electromagnetic environment is a basic requirement for their normal operation.

[0003] Therefore, it is necessary to conduct electromagnetic compatibility tests on charging piles, especially to verify the ability of transient voltage surge suppressor (TVSS) triggered by lightning strikes, to ensure that the circuit board of the charging pile can effectively protect itself from damage when struck by lightning.

[0004] The earthing system of the charging pile is the key to ensuring equipment safety. During abnormal events such as lightning strikes, the earthing system can conduct overvoltage, maintain the internal voltage balance of the system, and prevent the circuit board from being damaged due to overvoltage.

[0005] However, considering the situation where the voltage cannot be conducted through the earthing system due to damage to the grounding wire on the circuit board, therefore, the circuit board of the charging pile needs to undergo a high-voltage insulation resistance test to evaluate its tolerance at the design limit voltage, ensure that the circuit board does not break down within the specified time, and thus guarantee the safety performance of the charging pile.

[0006] Current high-voltage test technologies require simulating earthing system failures during the test, which is usually achieved by disconnecting the grounding wire on the circuit board (i.e., simulating the earthing wire break). Although this method can test the high-voltage resistance performance of the circuit board when the earthing protection is lost, it has certain limitations: the operations of disconnecting and re-welding the grounding wire on the circuit board are not only complex and time-consuming, increasing the labor cost of production testing, but also may introduce additional welding defects, affecting the long-term reliability of the circuit board.

[0007] Therefore, how to improve the convenience of high-voltage testing for the circuit board of the charging pile has become an urgent technical problem to be solved. Utility Model Content

[0008] In view of the above problems, the embodiments of the present application provide a charging pile facilitating high-voltage testing, which can reduce the difficulty, cost, and time consumption of high-voltage testing without damaging the integrity of the circuit board of the charging pile facilitating high-voltage testing.

[0009] According to one aspect of the embodiments of the present application, a charging pile facilitating high-voltage testing is provided, which includes a circuit board. A main circuit area and a grounding area are provided on the circuit board. The main circuit area is used to control the charging state of the charging pile facilitating high-voltage testing, and the grounding area is used to introduce the large current generated by the high voltage in the main circuit area into the ground. It further includes a first conductive block, a second conductive block, and a metal conductive member. The first conductive block is electrically connected to the main circuit area, and the second conductive block is electrically connected to the grounding area. Both the first conductive block and the second conductive block are provided on the surface of the circuit board, and there is an open circuit between the first conductive block and the second conductive block. The metal conductive member is detachably press-connected to the surface of the circuit board and is used to electrically connect the first conductive block and the second conductive block when contacting the surface of the circuit board.

[0010] Preferably, the charging pile facilitating high-voltage testing further includes an insulating bolt. A first through hole is provided on the circuit board, and the first through hole is located between the first conductive block and the second conductive block. A second through hole is provided on the metal conductive member, and the second through hole is aligned with the first through hole. The insulating bolt passes through the first through hole and the second through hole to detachably press-connect the metal conductive member to the surface of the circuit board.

[0011] Preferably, both the first conductive block and the second conductive block are close to the first through hole and are symmetrically arranged with the first through hole as the center of symmetry. The metal conductive member has a certain area, the second through hole is located at the center of the metal conductive member, and the metal conductive member covers the first conductive block and the second conductive block.

[0012] Preferably, the metal conductive member is in a circular ring shape, and the inner circle of the metal conductive member forms the second through hole. Both the first conductive block and the second conductive block are in a crescent shape, and the inner arc surfaces of the first conductive block and the second conductive block both face the second through hole.

[0013] Preferably, the charging pile facilitating high-voltage testing further includes a pressing plate. A third through hole is provided on the pressing plate. The insulating bolt sequentially passes through the third through hole, the second through hole, and the first through hole to clamp the metal conductive member between the pressing plate and the circuit board. The area of the pressing plate is larger than the area of the metal conductive member and is used to cover the metal conductive member.

[0014] Preferably, the charging pile facilitating high-voltage testing further includes a mounting bracket and an electric meter. The electric meter is fixed to the mounting bracket. The pressing plate includes a support bar. One end of the support bar extends along the angular direction of its axis to have a first fixing plate, and the other end extends along the opposite direction of the angular direction to have a second fixing plate. The first fixing plate and the second fixing plate are respectively located on both sides of the support bar. A third through hole is provided on the first fixing plate, and the insulating bolt is used to clamp the metal conductive member between the first fixing plate and the circuit board. The mounting bracket is fixed on the second fixing plate.

[0015] Preferably, the support bar has a certain length in its axial direction, and the circuit board is fixed to the inner plane of the charging pile body facilitating high-voltage testing; the support bar, the inner plane of the charging pile body facilitating high-voltage testing, and the mounting bracket form an accommodating space; the accommodating space is used to accommodate the cables inside the charging pile facilitating high-voltage testing.

[0016] Preferably, the included angle direction is the vertical direction.

[0017] Preferably, the pressing plate is made of insulating material.

[0018] Preferably, the charging pile facilitating high-voltage testing further includes a charging gun; the main circuit area is electrically connected to the charging gun to control the working state of the charging gun.

[0019] When the charging pile facilitating high-voltage testing provided by the embodiment of the present application needs to be tested, separating the metal conductive part from the surface of the circuit board can simulate the situation of the ground wire system failure of the charging pile to perform high-voltage testing on the circuit board; when it is used normally after the test is completed, fixing the metal conductive part to the surface of the circuit board can restore the ground wire system of the charging pile to the normal working state. The integrity of the circuit board does not need to be damaged during the whole testing process, reducing the complexity and difficulty of high-voltage testing, and reducing the cost and time of high-voltage testing.

[0020] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically given below. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. And throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0022] Figure 1 The perspective view of the charging pile facilitating high-voltage testing provided by the embodiment of the present application is shown;

[0023] Figure 2 The internal structure diagram of the charging pile facilitating high-voltage testing provided by the embodiment of the present application is shown;

[0024] Figure 3 The position schematic diagram of the circuit board, the metal conductive part and the pressing plate provided by the embodiment of the present application is shown;

[0025] Figure 4 The circuit connection diagram of the circuit board and the metal conductive part provided by the embodiment of the present application is shown.

[0026] The reference numerals in the specific embodiments are as follows:

[0027] 1. Charging pile;

[0028] 10. Circuit board; 111. Main circuit area; 112. Grounding area; 121. First conductive block; 122. Second conductive block; 13. First through hole;

[0029] 20. Metal conductive part; 21. Second through hole;

[0030] 30. Pressing plate; 31. Support bar; 32. First fixing plate; 321. Third through hole; 33. Second fixing plate;

[0031] 41. Installation bracket; 42. Electric meter; 43. Cable. Specific embodiments

[0032] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, and therefore are only examples and cannot be used to limit the protection scope of the present application.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0034] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, "a plurality" means more than two unless otherwise specifically defined.

[0035] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0036] In the description of the embodiments of the present application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: the existence of A, the simultaneous existence of A and B, and the existence of B. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0037] In the description of the embodiments of the present application, the term "plural" refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0038] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the embodiments of the present application.

[0039] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0040] The embodiments of the present application provide a charging pile that is convenient for high-voltage testing (hereinafter referred to as "charging pile 1" for short of "charging pile 1 that is convenient for high-voltage testing"). Please refer to Figures 1 to 4, the charging pile 1 includes: a circuit board 10, on which a main circuit area 111 and a grounding area 112 are provided. Between the main circuit area 111 and the grounding area 112, a first conductive block 121 and a second conductive block 122 are provided. Both the first conductive block 121 and the second conductive block 122 are disposed on the surface of the circuit board 10, and the first conductive block 121 is electrically connected to the main circuit area 111, and the second conductive block 122 is electrically connected to the grounding area 112; a metal conductive member 20, which can be detachably crimped to the surface of the circuit board 10 and is used to form an electrical connection by contacting the first conductive block 121 and the second conductive block 122 simultaneously when contacting the surface of the circuit board 10, so as to conduct the main circuit area 111 and the grounding area 112; when the metal conductive member 20 is separated from the surface of the circuit board 10, the first conductive block 121 and the second conductive block 122 are in an open circuit state, making the main circuit area 111 and the grounding area 112 in an open circuit state.

[0041] Among them, the main circuit area 111 refers to the part on the circuit board 10 responsible for realizing the main control functions of the charging pile 1, including key functions such as power management, charging control, and communication interfaces; the grounding area 112 refers to all parts on the circuit board 10 that need to be grounded, including ground wires, ground planes, and all circuit parts that need to refer to the zero potential point.

[0042] The charging pile 1 further includes a charging gun. The main circuit area 111 is electrically connected to the charging gun and is used to control the working state of the charging gun. For example, it controls the charging gun to discharge, so that the vehicle can charge through the charging gun, and after the vehicle finishes charging, it controls the charging gun to end the discharge to complete the charging of the vehicle.

[0043] Preferably, please refer to Figure 3 , the charging pile 1 further includes an insulating bolt ( Figure 3 not shown in the figure); a first through hole 13 is provided on the circuit board 10, and the first through hole 13 is located between the first conductive block 121 and the second conductive block 122; a second through hole 21 is provided on the metal conductive member 20, and the second through hole 21 is aligned with the first through hole 13; the insulating bolt penetrates through the first through hole 13 and the second through hole 21 to detachably crimp the metal conductive member 20 to the surface of the circuit board 10.

[0044] Tightening the nut of the insulating bolt can fix the metal conductive member 20 to the surface of the circuit board 10 and contact the first conductive block 121 and the second conductive block 122 simultaneously; loosening the nut of the insulating bolt can separate the metal conductive member 20 from the surface of the circuit board 10, making the first conductive block 121 and the second conductive block 122 in an open circuit state.

[0045] The detachable connection between the metal conductive member 20 and the surface of the circuit board 10 is realized through the insulating bolt. The implementation structure of its detachable connection is simple, the cost is low, and the operation difficulty of separation and fixation is low.

[0046] Preferably, please continue to refer to Figure 3 , the first conductive block 121 and the second conductive block 122 are both close to the first through hole 13 and are symmetrically arranged with the first through hole 13 as the center of symmetry; the metal conductive member 20 has a certain area, and the second through hole 21 is located at the center of the metal conductive member 20, and the metal conductive member 20 covers the first conductive block 121 and the second conductive block 122.

[0047] Covering the first conductive block 121 and the second conductive block 122 with the metal conductive member 20 can ensure the transmission effect of current between the first conductive block 121 and the second conductive block 122; by making both the first conductive block 121 and the second conductive block 122 close to the first through hole 13 and symmetrically arranged with the first through hole 13 as the center of symmetry, and by arranging the second through hole 21 at the center of the metal conductive member 20, the area required for the metal conductive member 20 can be reduced to save costs.

[0048] Preferably, please continue to refer to Figure 3 , the metal conductive member 20 is in a circular ring shape, and the inner circle of the metal conductive member 20 forms the second through hole 21; both the first conductive block 121 and the second conductive block 122 are in a crescent shape, and the inner arc surfaces of the first conductive block 121 and the second conductive block 122 both face the second through hole 21, so that the bending shapes of the first conductive block 121 and the second conductive block 122 match the shape of the metal conductive member 20, thereby further reducing the area required for the metal conductive member 20.

[0049] Preferably, please refer to Figure 2 and Figure 3 , the charging pile 1 further includes a pressing plate 30, and a third through hole 321 is provided on the pressing plate 30; an insulating bolt sequentially passes through the third through hole 321, the second through hole 21 and the first through hole 13 to clamp the metal conductive member 20 between the pressing plate 30 and the circuit board 10, so as to ensure that the pressing plate 30 is in close contact with the surface of the circuit board 10, thereby ensuring the transmission effect of current between the first conductive block 121 and the second conductive block 122; the area of the pressing plate 30 is larger than the area of the metal conductive member 20 and is used to cover the metal conductive member 20 to resist dust entering the charging pile 1 through the pressing plate 30.

[0050] Preferably, the pressing plate 30 is made of an insulating material to improve the circuit safety between the circuit board 10 and the metal conductive member.

[0051] Preferably, please refer to Figure 2, the charging pile 1 further includes a mounting bracket 41 and a meter 42, and the meter 42 is fixed to the mounting bracket 41; the pressing plate 30 includes a support bar 31, one end of the support bar 31 extends in the angular direction along its axis to have a first fixing plate 32, and the other end extends in the opposite direction of the angular direction to have a second fixing plate 33; the first fixing plate 32 and the second fixing plate 33 are respectively located on both sides of the support bar 31; a third through hole 321 is provided on the first fixing plate 32, and an insulating bolt is used to clamp the metal conductive member 20 between the first fixing plate 32 and the circuit board 10; the mounting bracket 41 is fixed on the second fixing plate 33 to realize the simple installation of the meter 42.

[0052] Preferably, the support bar 31 is perpendicular to the first fixing plate 32 and the second fixing plate 33 respectively (that is, the angular direction is a right angle direction), and the first fixing plate 32 and the second fixing plate 33 are parallel.

[0053] Preferably, the support bar 31 has a certain length in its axial direction, and the circuit board 10 is fixed by fitting the inner plane of the pile body of the charging pile 1; the support bar 31, the inner plane of the pile body of the charging pile 1 and the mounting bracket 41 form a receiving space; the receiving space is used to accommodate the cable 43 inside the charging pile 1 to improve the utilization rate of the internal space of the charging pile 1.

[0054] Among them, the cable 43 can be a mains input cable or a neutral wire, a live wire, etc.

[0055] Please refer to Figure 3 and Figure 4 , for the charging pile 1 provided by the embodiment of the present application, when the metal conductive member 20 is fixed on the surface of the circuit board 10, the metal conductive member 20 is in contact with the first conductive block 121 and the second conductive block 122 at the same time, so that a path is formed between the main circuit area 111 and the grounding area 112, that is, Figure 4 the switch representing the function of the metal conductive member 20 in Figure 4 is in a closed state; when the metal conductive member 20 is separated from the surface of the circuit board 10, it is equivalent to

[0056] the switch in

[0057] being in an open state, and the main circuit area 111 and the grounding area 112 are in an open circuit.

[0056] When performing a safety inspection on the charging pile 1, the metal conductive member 20 is separated from the surface of the circuit board 10 to perform a high-voltage test on the circuit board 10. After the high-voltage test is completed, the metal conductive member 20 is fixed on the surface of the circuit board 10 to put the charging pile 1 into normal use. The high-voltage test process of the charging pile 1 is relatively convenient: it does not need to break the ground wire of the circuit board 10, retains the integrity of the circuit board 10, thereby reducing the complexity and difficulty of the high-voltage test, and reducing the cost and time of the high-voltage test.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered within the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A charging pile for high voltage testing, comprising a circuit board, wherein a main circuit area and a grounding area are provided on the circuit board; the main circuit area is used to control the charging state of the charging pile for high voltage testing, and the grounding area is used to introduce a large current generated by the high voltage in the main circuit area into the ground; Features: It also includes a first conductive block, a second conductive block and a metal conductive member; The first conductive block is electrically connected to the main circuit area, and the second conductive block is electrically connected to the grounding area; the first conductive block and the second conductive block are both arranged on the surface of the circuit board, and there is an open circuit between the first conductive block and the second conductive block; The metal conductive member can be detachably crimped onto the surface of the circuit board, and is used to electrically connect the first conductive block and the second conductive block when in contact with the surface of the circuit board.

2. The charging pile for high voltage testing according to claim 1, characterized in that: Also included are insulating bolts; The circuit board is provided with a first through hole, and the first through hole is located between the first conductive block and the second conductive block; A second through hole is provided on the metal conductive member, and the second through hole is aligned with the first through hole; The insulating bolt passes through the first through hole and the second through hole to detachably crimp the metal conductive member to the surface of the circuit board.

3. The charging pile for high voltage testing according to claim 2, characterized in that: The first conductive block and the second conductive block are both close to the first through hole and are symmetrically arranged with the first through hole as a symmetry center; The metal conductive member has a certain area, the second through hole is located at the center of the metal conductive member, and the metal conductive member covers the first conductive block and the second conductive block.

4. The charging pile for high voltage testing according to claim 3, characterized in that: The metal conductive member is in a ring shape, and the inner circle of the metal conductive member forms the second through hole; The first conductive block and the second conductive block are both crescent-shaped, and inner arc surfaces of the first conductive block and the second conductive block are both facing the second through hole.

5. The charging pile for high voltage testing according to claim 3, characterized in that: It also includes a pressing plate, wherein the pressing plate is provided with a third through hole; The insulating bolt passes through the third through hole, the second through hole and the first through hole in sequence, and is used to clamp the metal conductive member between the pressing plate and the circuit board; The pressing plate has an area greater than that of the metal conductive member and is used to cover the metal conductive member.

6. The charging pile for high voltage testing according to claim 5, characterized in that: Also included is a mounting bracket and an electric meter, wherein the electric meter is fixed to the mounting bracket; The pressing plate comprises a supporting bar, a first fixing plate is extended from one end of the supporting bar along the axial angle direction thereof, and a second fixing plate is extended from the other end along the opposite direction of the angular direction; The first fixing plate and the second fixing plate are respectively located on two sides of the support bar; The first fixing plate is provided with the third through hole, and the insulating bolt is used to clamp the metal conductive member between the first fixing plate and the circuit board; The mounting bracket is fixed on the second fixing plate.

7. The charging pile for high voltage testing according to claim 6, characterized in that: The support bar has a certain length in its axial direction, and the circuit board is fixed to the inner plane of the charging pile body that is convenient for high-voltage testing; the support bar, the inner plane of the charging pile body that is convenient for high-voltage testing, and the mounting bracket form an accommodating space; The accommodating space is used to accommodate the cables inside the charging pile that are convenient for high-voltage testing.

8. The charging pile for high voltage testing according to claim 6, characterized in that: The angle direction is a vertical direction.

9. The charging pile for high voltage testing according to claim 5, characterized in that: The pressing plate is made of insulating material.

10. The charging pile for high voltage testing according to claim 1, characterized in that: It also includes a charging gun; the main circuit area is electrically connected to the charging gun and is used to control the working state of the charging gun.

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