Mounting structure of current sensor of electric vehicle charging control box

Abstract

The utility model provides a mounting structure of a current sensor of an electric vehicle charging control box. The mounting structure comprises an electric energy transmission busbar, a signal transmission busbar, a circuit board, a relay and a Hall current sensor, one end of the electric energy transmission busbar is connected with a normally-open end of the relay, and the other end is electrically connected with a charging wire of the charging gun; one end of the signal transmission busbar is electrically connected with the circuit board, and the other end is electrically connected with a signal lead of the charging gun; at least part of the outer surface of the signal transmission busbar is provided with an insulating layer, the insulating layer extends to form a supporting part, the supporting part surrounds to form a mounting cavity, the inner side surface of the mounting cavity is provided with a mounting structure, and the Hall current sensor is fixed in the mounting cavity through the mounting structure; the Hall current sensor is provided with a first center hole, and the electric energy transmission busbar passes through the first center hole. According to the mounting structure disclosed by the invention, the Hall current sensor is fixed in the mounting cavity, so that the detection of the current signal of the electric energy transmission busbar is realized, and the space in the charging control box is saved.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle charging equipment technology, and in particular to an installation structure for a current sensor in an electric vehicle charging control box. Background Technology

[0002] With the rapid development of new energy vehicles, the use of charging gun control boxes is becoming more and more widespread. The charging gun control box contains a variety of electronic components, such as relays and various sensors for parameters such as temperature, current, and voltage. Within the limited space of the charging gun control box, it is necessary to protect various electronic components while ensuring the accuracy of electronic component detection. How to balance these two needs is an urgent problem to be solved. Utility Model Content

[0003] To address the aforementioned problems in the prior art, the purpose of this paper is to provide an installation structure for a current sensor in an electric vehicle charging control box, including a power transmission busbar, a signal transmission busbar, a circuit board, and a relay and a Hall current sensor electrically connected to the circuit board.

[0004] One end of the power transmission busbar is connected to the normally open terminal of the relay, and the other end is used to electrically connect to the charging wire of the charging gun.

[0005] One end of the signal transmission busbar is electrically connected to the circuit board, and the other end is used to electrically connect to the signal wire of the charging gun.

[0006] At least a portion of the outer surface of the signal transmission busbar has an insulating layer, the insulating layer extends to form a support portion, the support portion surrounds a mounting cavity, and a mounting structure is provided on the inner surface of the mounting cavity. The Hall current sensor is fixed in the mounting cavity through the mounting structure.

[0007] The Hall current sensor has a first central hole, through which the power transmission busbar is disposed.

[0008] Preferably, a leakage current sensor is also provided in the mounting cavity, and the leakage current sensor is electrically connected to the circuit board.

[0009] Preferably, the leakage current sensor has a second central hole, through which the power transmission busbar is disposed.

[0010] Preferably, the mounting cavity is arranged perpendicular to the circuit board, the Hall current sensor is arranged on the first inner surface of the vertical inner surface, and the extension direction of the power transmission busbar is perpendicular to the first inner surface.

[0011] Preferably, the mounting structure comprises at least three abutting protrusions extending from the first inner surface, the abutting protrusions being arranged at intervals along the outer periphery of the Hall current sensor and abutting against the outer periphery.

[0012] Preferably, the abutment protrusion has an abutment surface that matches the outer contour of the Hall current sensor.

[0013] Preferably, the abutment protrusion is a flexible structure suitable for shock absorption.

[0014] Preferably, the housing of the electric vehicle charging control box includes an interlocking upper cover and a base, with the upper surface of the support abutting against the lower surface of the upper cover.

[0015] Preferably, the support portion has a snap-fit ​​structure that snaps into the interior of the side wall of the upper cover.

[0016] Preferably, it further includes a transmission terminal and a signal terminal. One end of the transmission terminal is connected to the charging gun via the charging wire, and the other end is plugged into the power transmission busbar. One end of the signal terminal is connected to the charging gun via the signal wire, and the other end is plugged into the signal transmission busbar.

[0017] According to the current sensor mounting structure of the electric vehicle charging control box disclosed herein, the Hall current sensor is fixed in the mounting cavity formed by the extension of the insulating layer on the outer surface of the signal transmission busbar, and the power transmission busbar passes through the first central hole of the Hall current sensor. This structural arrangement not only achieves accurate detection of the current signal of the power transmission busbar, but also saves space in the charging control box. At the same time, the mounting cavity formed by the extension of the insulating layer also provides a certain degree of protection for the Hall current sensor inside. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of a charging control box according to a preferred embodiment of the present disclosure.

[0020] Figure 2 for Figure 1 A 3D diagram of the components inside the charging control box.

[0021] Figure 3 This is a diagram showing the installation structure of a Hall current sensor.

[0022] Figure 4 for Figure 1 Partial exploded 3D diagram.

[0023] Figure 5 This is a schematic diagram of a Hall current sensor and a leakage current sensor.

[0024] Explanation of reference numerals in the attached figures

[0025] Charging control box 100, power transmission busbar 10

[0026] Signal transmission busbar 20, circuit board 30

[0027] 40 Relays, 50 Hall effect current sensors

[0028] Charging gun cable 60, snap-fit ​​structure 208

[0029] Support 202 Mounting cavity 203

[0030] First center hole 501 Leakage current sensor 70

[0031] Second central hole 701 First sidewall 204

[0032] Second side wall 205 Third side wall 206

[0033] First inner surface 207 abuts against protrusion 209

[0034] Top cover 101, base 102

[0035] Signal terminal 80, transmission terminal 90 Detailed Implementation

[0036] The preferred embodiments of this disclosure are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure. Furthermore, the embodiments and features in the embodiments of this disclosure can be combined with each other without conflict.

[0037] like Figures 1 to 5As shown, this disclosure provides a mounting structure for a current sensor in an electric vehicle charging control box, including a power transmission busbar 10, a signal transmission busbar 20, a circuit board 30, and a relay 40 and a Hall current sensor 50 electrically connected to the circuit board 30; one end of the power transmission busbar 10 is connected to the normally open terminal of the relay 40, and the other end is used to electrically connect to the charging wire of the charging gun; one end of the signal transmission busbar 20 is electrically connected to the circuit board 30, and the other end is used to electrically connect to the signal wire of the charging gun; at least a portion of the outer surface of the signal transmission busbar 20 has an insulating layer, the insulating layer extends to form a support portion 202, the support portion 202 surrounds a mounting cavity 203, and a mounting structure is provided on the inner surface of the mounting cavity 203, the Hall current sensor 50 is fixed in the mounting cavity 203 by the mounting structure; the Hall current sensor 50 has a first central hole 501, and the power transmission busbar 10 is disposed through the first central hole 501.

[0038] It is understood that the charging control box 100 with the above-described installation structure is connected to the signal wires of the charging gun and the circuit board 30 via the signal transmission bus 20, thereby realizing signal transmission. Furthermore, a control chip (not shown in the figure) can be installed on the circuit board 30. The control chip can control the switching of the normally open terminal of the relay 40 according to the signal transmitted by the signal transmission bus 20, thereby controlling whether the path of the power transmission bus 10 is open for power transmission. The control chip can also receive the current signal from the Hall current sensor 50 to monitor the current data during the charging process.

[0039] More specifically, such as Figure 4 As shown, a transmission terminal 90 and a signal terminal 80 may also be included between the busbar and the charging gun cable 60. One end of the transmission terminal 90 is connected to the charging gun through a charging wire, and the other end is plugged into the power transmission busbar 10. One end of the signal terminal 80 is connected to the charging gun through a signal wire, and the other end is plugged into the signal transmission busbar 20.

[0040] Therefore, the Hall current sensor 50 is fixed within the mounting cavity 203 formed by the extension of the insulating layer on the outer surface of the signal transmission busbar 20 through the mounting structure, and the power transmission busbar 10 is disposed through the first central hole 501 of the Hall current sensor 50. This structural arrangement not only achieves accurate detection of the current signal of the power transmission busbar 10, but also saves space within the charging control box 100. Simultaneously, the mounting cavity 203 formed by the extension of the insulating layer also provides a certain degree of protection for the Hall current sensor 50 inside. In this embodiment, the busbar connecting the live wire in the power transmission busbar 10 is disposed through the first central hole 501 of the Hall current sensor 50.

[0041] In some embodiments, combined with Figure 2 , Figure 4 and Figure 5 A leakage current sensor 70 can also be installed inside the mounting cavity 203, and the leakage current sensor 70 is electrically connected to the circuit board 30. Therefore, by installing the leakage current sensor 70, leakage current during the charging process can be monitored. If leakage current occurs, the power transmission busbar 10 can be cut off in time. It can be understood that the mounting cavity 203, formed by the extension of the insulating layer, also provides a certain degree of protection for the leakage current sensor 70 inside.

[0042] More specifically, such as Figure 5 As shown, the leakage current sensor 70 has a second central hole 701, through which the power transmission busbar 10 is disposed. In this embodiment, the two busbars of the power transmission busbar 10 that connect the live wire and the neutral wire pass through the second central hole 701 of the leakage current sensor 70.

[0043] Next, combine Figure 2 and Figure 3 Describe the installation structure, such as Figure 2 As shown, the mounting cavity 203 of the support portion 202 is a cavity with an opening on one side. That is, the mounting cavity 203 includes a first sidewall 204 perpendicular to the circuit board 30, a second sidewall 205 connected to the first sidewall 204, and a third sidewall 206. The second sidewall 205 and the third sidewall 206 are arranged opposite to each other, and the opposite side of the first sidewall 204 is an opening. It can be understood that the inner surface of the first sidewall 204 is defined as the first inner surface 207, the inner surface of the second sidewall 205 is defined as the second inner surface, and the inner surface of the third sidewall 206 is defined as the third inner surface.

[0044] like Figure 2 and Figure 3 As shown, the mounting cavity 203 is positioned perpendicular to the circuit board 30, and the Hall current sensor 50 is mounted on the first inner surface 207 of the vertical inner surface. The extension direction of the power transmission bus 10 is perpendicular to the first inner surface 207. This allows for efficient use of the space on the circuit board 30 within the charging control box 100, while ensuring that the Hall current sensor 50 can accurately detect the current value of the power transmission bus 10.

[0045] Specifically, such as Figure 3 As shown, the mounting structure consists of at least three abutting protrusions 209 extending from the first inner surface 207. These abutting protrusions 209 are spaced apart along the outer periphery of the Hall current sensor 50 and abut against the outer periphery. More specifically, as shown, the three abutting protrusions 209 extend from the first inner surface 207, and their extension length is greater than half the thickness of the annular body of the Hall current sensor 50. This ensures the stability of the Hall current sensor 50 during mounting.

[0046] Preferably, the abutment protrusion 209 has an abutment surface that matches the outer contour of the Hall current sensor 50. This avoids damage to the Hall current sensor 50 during installation and removal.

[0047] More preferably, the abutment protrusion 209 is a flexible structure suitable for shock absorption. Thus, during the use of the charging control box 100, even if it is shaken by external forces, the stability of the Hall current sensor 50 can be guaranteed.

[0048] In some embodiments, such as Figure 1 As shown, the housing of the electric vehicle charging control box includes an interlocking upper cover 101 and a base 102, with the upper surface of the support 202 abutting against the lower surface of the upper cover 101. This ensures the components inside the charging control box 100 are securely installed. Figure 2 As shown, the support portion 202 has a snap-fit ​​structure 208 that snaps into the interior of the side wall of the cover 101.

[0049] Although preferred embodiments of this disclosure have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this disclosure.

[0050] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this disclosure without departing from the spirit and scope of the embodiments of this disclosure. Therefore, if these modifications and variations to the embodiments of this disclosure fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include these modifications and variations.

[0051] It should also be understood that, in the embodiments herein, the term "and / or" is merely a description of the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following associated objects have an "or" relationship.

[0052] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this document.

[0053] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0054] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the embodiments described herein, depending on actual needs.

[0055] Furthermore, the functional units in the various embodiments of this document can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0056] This document uses specific embodiments to illustrate the principles and implementation methods of this document. The descriptions of the embodiments above are only for the purpose of helping to understand the methods and core ideas of this document. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this document. Therefore, the content of this specification should not be construed as a limitation of this document.

Claims

1. A mounting structure for a current sensor of an electric vehicle charging control box, characterized in that: It includes an electric energy transmission busbar, a signal transmission busbar, a circuit board, and a relay and a Hall current sensor electrically connected to the circuit board; One end of the power transmission busbar is connected to the normally open end of the relay, and the other end is used to be electrically connected to the charging wire of the charging gun; One end of the signal transmission busbar is electrically connected to the circuit board, and the other end is used to be electrically connected to the signal wire of the charging gun; At least part of the outer surface of the signal transmission busbar has an insulating layer, the insulating layer extends to form a support portion, the support portion surrounds a mounting cavity, the inner surface of the mounting cavity is provided with a mounting structure, and the Hall current sensor is fixed in the mounting cavity through the mounting structure; The Hall current sensor has a first central hole, and the power transmission busbar is arranged through the first central hole.

2. The installation structure of the current sensor of the electric vehicle charging control box according to claim 1 is characterized in that: A leakage current sensor is also arranged in the installation cavity, and the leakage current sensor is electrically connected to the circuit board.

3. The installation structure of the current sensor of the electric vehicle charging control box according to claim 2 is characterized in that: The leakage current sensor has a second center hole, and the power transmission busbar is arranged through the second center hole.

4. The installation structure of the current sensor of the electric vehicle charging control box according to claim 1, characterized in that: The installation cavity is arranged perpendicular to the circuit board, the Hall current sensor is arranged on a first inner surface among the vertical inner surfaces, and the extension direction of the power transmission busbar is perpendicular to the first inner surface.

5. The installation structure of the current sensor of the electric vehicle charging control box according to claim 4 is characterized in that: The mounting structure is at least three abutting protrusions extending from the first inner surface, and the abutting protrusions are arranged at intervals along the periphery of the Hall current sensor and abut against the periphery.

6. The installation structure of the current sensor of the electric vehicle charging control box according to claim 5, characterized in that: The abutting protrusion has an abutting surface matching the outer contour of the Hall current sensor.

7. The installation structure of the current sensor of the electric vehicle charging control box according to claim 5, characterized in that: The abutting protrusion is a flexible structure suitable for shock absorption.

8. The installation structure of the current sensor of the electric vehicle charging control box according to claim 1, characterized in that: The shell of the electric vehicle charging control box includes an upper cover and a base that are buckled together, and the upper surface of the support part abuts against the lower surface of the upper cover.

9. The installation structure of the current sensor of the electric vehicle charging control box according to claim 8, characterized in that: The support portion has a clamping structure for clamping the inner part of the upper cover side wall.

10. The installation structure of the current sensor of the electric vehicle charging control box according to claim 1, characterized in that: It also includes a transmission terminal and a signal terminal, one end of the transmission terminal is connected to the charging gun through the charging wire, and the other end is plugged into the power transmission busbar; one end of the signal terminal is connected to the charging gun through the signal wire, and the other end is plugged into the signal transmission busbar.

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