Control box of vehicle charger and charger

Abstract

The utility model belongs to the technical field of vehicle charging equipment, and particularly provides a control box of a vehicle charger and the charger. The control box comprises a box body with an opening in the top, a connector is installed on the side portion of the box body and comprises a contact piece, the tail portion of the contact piece is a wiring portion, a circuit board is arranged in the box body, the circuit board is provided with a connecting portion connected and conducted with the wiring portion, the wiring portion and the connecting portion are matched in an inserting mode, and the inserting direction is from top to bottom. The charger comprises the control box. As the wiring part and the connecting part are in plug-in fit, after the other one of the connector and the circuit board is installed, the wiring part and the connecting part can be in plug-in fit, so that electric connection is realized, and convenience and high efficiency are realized. The plug-in direction is from top to bottom, so that the space in the thickness direction of the control box can be fully utilized to install the circuit board and the connector, the box body does not need to reserve a space for moving the circuit board along the length direction, and the length of the control box can be better controlled.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle charging equipment, and particularly relates to a control box and a charger for a vehicle charger. Background Art

[0002] Charging mode 2 (MODE2) of new energy vehicles (pure electric vehicles, plug-in hybrid vehicles, extended-range vehicles) refers to the mode of charging using a portable charger. The portable charger includes a charging plug for plugging into a household charging socket, a control box, a charging gun for plugging into the vehicle's AC charging port, and a connecting line. The control box includes a shell, a circuit board and a connector are provided inside the shell, and the connector is provided with a power contact (power pin) and a signal contact (signal pin), such as the conversion connector disclosed in the patent with authorization announcement number CN220456809U and authorization announcement date 2024.02.06. The connector is connected to the wiring terminals on the power circuit board through the power contacts and to the wiring terminals on the signal circuit board through the signal contacts.

[0003] In the prior art, the contact terminals of the connector used in the car charger and the wiring terminals of the circuit board are mostly connected by welding and crimping. The welding process is relatively complicated and requires special supporting equipment. The welding process includes two processes, heating and cooling, which is not efficient and inconvenient to disassemble and repair the connector or circuit board later. Although the crimping method is relatively simple, in order to ensure the reliability of the crimping part, a longer wire barrel is generally required. During assembly, the circuit board or connector needs to move along the axial direction of the wire barrel to allow the terminal to enter the wire barrel. Therefore, a sufficiently large space is required inside the control box, which easily causes the control box to be too long and inconvenient to use. Utility Model Content

[0004] The purpose of the utility model is to provide a control box of a car charger to solve the technical problems in the prior art that the connector of the control box is inconvenient to install and the control box is long. The purpose of the utility model is also to provide a car charger to solve the same technical problem.

[0005] To achieve the above purpose, the technical solution of the control box of the vehicle charger provided by the utility model is:

[0006] A control box for a car charger comprises a box body with an opening at the top, a connector is installed on the side of the box body, the connector comprises a contact piece, the tail of the contact piece is a wiring part, a circuit board is arranged in the box body, a connecting part connected and conductive with the wiring part is arranged on the circuit board, the wiring part and the connecting part are plugged together, and the plugging direction is from top to bottom.

[0007] As a further improvement, the circuit board includes a signal circuit board and a power circuit board, the contact includes a signal contact and a power contact, and only the wiring portion of the signal contact is plugged into and matched with the connecting portion on the signal circuit board from top to bottom.

[0008] As a further improvement, the connection portion of the power contact piece and the connection portion of the power circuit board are crimped to each other using crimping bolts.

[0009] As a further improvement, one of the wiring portion and the connecting portion is a clip structure, the clip structure includes a pair of elastic clips, and the other of the wiring portion and the connecting portion is clamped between the pair of elastic clips.

[0010] As a further improvement, the clip structure is arranged on the circuit board.

[0011] As a further improvement, at least one of the pair of elastic clips has a clamping portion bent in a direction approaching the other elastic clip.

[0012] As a further improvement, the elastic clips are arranged symmetrically to each other.

[0013] As a further improvement, in the pair of elastic clips, front ends of the two elastic clips are provided with flanges bent in a direction away from each other.

[0014] As a further improvement, in the pair of elastic clips, the root positions of the two elastic clips are connected with elastic reinforcement blocks.

[0015] The beneficial effect is that the utility model belongs to an improved invention. Specifically, when assembling the control box, one of the circuit board and the connector can be installed first. Since the wiring part and the connecting part are plugged in and matched, when installing the other one of the connector and the circuit board, the wiring part and the connecting part can be plugged in and matched to achieve electrical connection, which is convenient and efficient. At the same time, the plug-in direction is from top to bottom, so that the space in the thickness direction of the control box can be fully utilized to install the circuit board and the connector, and there is no need to reserve space for the box body to move the circuit board along the length direction. In addition, the wiring part and the connecting part are partially overlapped in the length direction of the control box, so the length of the control box can be better controlled.

[0016] To achieve the above purpose, the technical solution of the vehicle charger provided by the utility model is:

[0017] A car charger includes a control box, the control box includes a box body with an opening at the top, a connector is installed on the side of the box body, the connector includes a contact piece, the tail of the contact piece is a wiring part, a circuit board is arranged in the box body, and a connecting part connected and conductive with the wiring part is arranged on the circuit board, the wiring part and the connecting part are plugged together, and the plugging direction is from top to bottom.

[0018] As a further improvement, the circuit board includes a signal circuit board and a power circuit board, the contact includes a signal contact and a power contact, and only the wiring portion of the signal contact is plugged into and matched with the connecting portion on the signal circuit board from top to bottom.

[0019] As a further improvement, the connection portion of the power contact piece and the connection portion of the power circuit board are crimped to each other using crimping bolts.

[0020] As a further improvement, one of the wiring portion and the connecting portion is a clip structure, the clip structure includes a pair of elastic clips, and the other of the wiring portion and the connecting portion is clamped between the pair of elastic clips.

[0021] As a further improvement, the clip structure is arranged on the circuit board.

[0022] As a further improvement, at least one of the pair of elastic clips has a clamping portion bent in a direction approaching the other elastic clip.

[0023] As a further improvement, the elastic clips are arranged symmetrically to each other.

[0024] As a further improvement, in the pair of elastic clips, front ends of the two elastic clips are provided with flanges bent in a direction away from each other.

[0025] As a further improvement, in the pair of elastic clips, the root positions of the two elastic clips are connected with elastic reinforcement blocks.

[0026] The beneficial effect is that the utility model belongs to an improved invention. Specifically, when assembling the control box, one of the circuit board and the connector can be installed first. Since the wiring part and the connecting part are plugged in and matched, when installing the other one of the connector and the circuit board, the wiring part and the connecting part can be plugged in and matched to achieve electrical connection, which is convenient and efficient. At the same time, the plug-in direction is from top to bottom, so that the space in the thickness direction of the control box can be fully utilized to install the circuit board and the connector, and there is no need to reserve space for the box body to move the circuit board along the length direction. In addition, the wiring part and the connecting part are partially overlapped in the length direction of the control box, so the length of the control box can be better controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural exploded schematic diagram of an embodiment of a control box of a vehicle charger in the utility model;

[0028] Figure 2 A cross-sectional view of the contact position of the control box embodiment of the vehicle charger in the utility model (before the signal circuit board is installed);

[0029] Figure 3 for Figure 2 A partial enlarged view of the middle signal circuit board;

[0030] Figure 4 This is a cross-sectional view of the contact position of the control box embodiment of the vehicle charger in the utility model (after the signal circuit board is installed).

[0031] Description of reference numerals:

[0032] 1. Connector; 101. Signal contact; 102. Power contact; 2. Signal circuit board; 201. Clip structure; 202. Clamping part; 203. First section; 204. Second section; 205. Elastic reinforcement block; 3. Power circuit board; 301. Power connection part; 4. Crimp bolt; 5. Crimp nut; 6. Box body; 7. Box cover. DETAILED DESCRIPTION

[0033] In order to solve the problems mentioned in the background technology section, the basic technical concept of the utility model is to change the electrical connection method between the rear end of the connector and the circuit board to a plug-in method, and the plug-in direction is from top to bottom. In this way, after the connector and the circuit board are installed, the wiring part of the rear end of the connector and the connection part on the circuit board can be quickly plugged in, which has a high assembly efficiency. At the same time, the plug-in direction is from top to bottom, so that the space in the thickness (height) direction of the control box can be used to control the length of the control box within a smaller range.

[0034] The present invention is further described in detail below in conjunction with the embodiments.

[0035] The specific embodiment of the control box of the vehicle charger provided by the utility model is as follows:

[0036] The control box of the vehicle charger provided in this embodiment is as follows: Figure 1 As shown, it includes a box body 6, the top of the box body 6 is provided with an opening, and the opening is provided with a box cover 7 that can be detachably matched with the box body 6. A connector 1 is installed on one side of the box body 6, and a power contact 102 and a signal contact 101 are provided on the connector 1. A signal circuit board 2 and a power circuit board 3 are provided inside the box body 6. The tail of the power contact 102 is a power wiring part connected to the power circuit board 3, and the tail of the signal contact 101 is a signal wiring part connected to the signal circuit board 2. Correspondingly, a signal connection part connected and conducted with the signal wiring part is provided on the signal circuit board 2, and a power connection part 301 connected and conducted with the power wiring part is provided on the power circuit board 3.

[0037] In addition, a fixed mounting structure for fixing the signal circuit board 2 and the power circuit board 3 is provided inside the box body 6, and screws can be used for installation. The installation method is a prior art and will not be described here. At the same time, the specific installation and matching structure of the box body 6 and the box cover 7 is also a prior art and will not be described here.

[0038] Different from the traditional crimping or welding method, this embodiment provides an electrical connection method in which the signal wiring part and the signal connection part are plugged in and matched, and the plugging direction is from top to bottom. Specifically, during installation, the connector 1 can be installed on the box body 6 from one side, and then the signal circuit board 2 signal connection part and the tail end of the signal contact 101 are installed from top to bottom to achieve plugging.

[0039] As a plug-in matching implementation method, the signal circuit board 2 is provided with a clip structure 201, and the clip structure 201 forms a signal connection part. Figure 2-Figure 4 As shown, the clip structure 201 includes elastic clips arranged in pairs, each pair of elastic clips includes two elastic clips, and the tail of the signal contact 101 is clamped between the elastic clips to achieve electrical contact and conduction. Figure 1 As shown, the signal circuit board 2 and the connector 1 fully utilize the space in the thickness (height) direction of the box body 6 when they are installed, and in the length direction of the control box, the signal contact 101 and the clip structure 201 have overlapping parts, so that the length dimension of the control box can be better controlled within a smaller range.

[0040] Specifically, in the clip structure 201, the two elastic clips in each pair of elastic clips include a clamping portion 202, and the clamping portion 202 is bent in a direction close to the other elastic clip. The elastic clip is a metal conductor, and the metal conductor can be bent to form the clamping portion 202. At the same time, the metal conductor itself has a certain toughness, so that the two elastic clips cooperate with each other to have a certain clamping elastic force. The signal contact 101 is clamped between the two elastic clips of the clip structure 201, and the contact parts of the signal contact 101 and the elastic clips are conductive to achieve electrical connection. In the above preferred embodiment, the two elastic clips include a clamping portion 202, so that the two elastic clips form a "pair clamping" structure, which can provide a greater clamping force for the clamped contact. In a further preferred embodiment, on the basis that the two elastic clips are provided with a clamping portion 202, the two elastic clips are symmetrically arranged, so that the two elastic clips can provide a relatively balanced clamping force, and the contact and the elastic clip can be reliably contacted. In other implementations, only one elastic clip may have a clamping portion 202 , which can also provide a clamping force for clamping the contact piece.

[0041] As another feasible implementation, the two elastic clips may not be provided with the clamping portion 202. In this case, the distance between the two elastic clips needs to be reasonably set to ensure that the signal contact 101 can be clamped between the two elastic clips. For example, if the thickness / width / diameter of the signal contact 101 is 5 mm, the distance between the two elastic clips can be 4 mm. Similarly, the elastic deformation characteristics of the elastic clips themselves are used to clamp the signal contact 101 between the two elastic clips.

[0042] In order to facilitate the signal contact 101 to enter between the two elastic clips and be clamped by the two elastic clips, as a preferred embodiment, a flange structure can be provided on the elastic clip, and the flange structure is located at the front end of the elastic clip (defined as the end of the elastic clip that first contacts the signal contact 101 during assembly as the front end, i.e. Figure 2-Figure 4 The flange structure is a flange bent in a direction away from each other, which is equivalent to forming an opening for the signal contact 101 to enter between the two elastic clips. During installation, the opening can guide the signal contact 101 to enter between the two elastic clips, further improving the assembly efficiency.

[0043] Furthermore, if Figure 3 As shown, the flange structure includes two sections, namely the first section 203 and the second section 204. The bending angle of the second section 204 is greater than the bending angle of the first section 203, and the second section 204 is located at the front end of the elastic clip. In this way, on the one hand, a larger opening can be formed to facilitate the entry of the signal contact 101. On the other hand, since the bending angle of the second section 204 is smaller, the second section 204 can be used as the part in contact with the signal contact 101, ensuring that the elastic clip has enough area to contact the signal contact 101. Of course, in other embodiments, the flange structure may not be retained, that is, the front end of the elastic clip only has a part bent toward the direction close to the other elastic clip. In this case, the front end of the elastic clip can be chamfered or rounded, which can also guide the signal contact 101 to enter.

[0044] The elastic clips can be respectively welded on the signal circuit board 2 during installation. In order to improve the overall strength of the signal contact, such as Figure 3 As shown, an elastic force reinforcing block 205 is provided between the roots of the two elastic clips, so that after the elastic clips clamp the signal contact 101, under the action of the elastic force reinforcing block 205, the roots of the elastic clips still have a relatively stable support, thereby improving the overall strength of the signal contact. At the same time, the elastic force reinforcing block 205 can also extend the resistance arm of the elastic clip, thereby playing a role in enhancing the elastic force.

[0045] It should be noted that the number of signal contacts 101 and clip structures 201 is determined according to actual requirements of detection, communication, etc., and is not limited to the three shown in the figure.

[0046] As another feasible implementation, the structures of the signal contact 101 and the clip structure 201 can also be interchanged, that is, the signal contact 101 is a contact including two elastic clips arranged opposite to each other. Figure 2-Figure 4 For example, it can be understood that the clip structure is rotated 90 degrees and installed on the connector 1 to form a signal contact. At this time, the signal circuit board 2 can be assembled first, and then the connector 1 can be installed. After the connector 1 is installed in place, the connection between the signal contact and the clip structure can be realized.

[0047] The power contact 102 and the power connection portion 301 are connected by crimping bolts. Figure 1 As shown, the power contact 102 and the power connecting part 301 are both provided with through holes for the crimping bolt 4 to pass through, and the box body 6 is provided with a crimping nut 5 for connecting with the crimping bolt 4. More specifically, the box body 6 is provided with a nut placement hole for placing the crimping nut 5, and the crimping nut 5 and the nut placement hole are locked. After the connector 1 and the power circuit board 3 are installed, the positions of the through holes configured for the power contact 102 and the power connecting part 301 correspond exactly, and the crimping bolt 4 is inserted at this time, and the crimping bolt 4 and the crimping nut 5 cooperate to connect the power contact 102 and the power connecting part 301. In other implementations, threaded holes can also be provided on the box body. Similarly, as Figure 1 As shown, in this connection mode, the power contact 102 and the power connection portion 301 also have overlapping parts in the length direction of the control box, which ensures a reliable connection without excessively increasing the size of the control box.

[0048] Since a large current flows through the power component, the solution of connecting the power contact 102 and the power connection part 301 with a bolt and nut assembly can ensure that the power contact 102 and the power connection part 301 have a large contact area to meet the needs of large current. In other embodiments, if the control box is used for a charger with a charging current of less than 16A, the power contact 102 and the power connection part 301 can also adopt a plug-in method consistent with the signal contact 101 and the clip structure 201. In other words, for the control box, the electrical connection between the circuit board and the connector inside it adopts a plug-in method, and the plug-in direction is from top to bottom.

[0049] It should be noted that the plug-in matching relationship between the connector 1 and the circuit board can also use other plug-in contacts. For example, the signal contact is provided with a socket extending in the up-down direction, and the signal circuit board is provided with a plug-in contact that plugs with the socket. When the connector 1 is installed in place, one end of the plug-in contact on the signal circuit board can be inserted into the socket to achieve electrical connection.

[0050] Specific embodiments of the vehicle charger in the utility model:

[0051] The vehicle charger includes the control box in the embodiment of the control box of the vehicle charger described above, which will not be described in detail here.

[0052] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A control box for a car charger, comprising a box body with an opening at the top, a connector (1) installed on the side of the box body, the connector (1) comprising a contact, the tail of the contact being a wiring part, a circuit board being arranged in the box body, a connecting part being connected and conducting with the wiring part being arranged on the circuit board, characterized in that: The wiring part and the connecting part are plugged together, and the plugging direction is from top to bottom.

2. The control box of the vehicle charger according to claim 1, characterized in that: The circuit board comprises a signal circuit board (2) and a power circuit board (3), the contact piece comprises a signal contact piece (101) and a power contact piece (102), and only the wiring part of the signal contact piece (101) is plugged and matched with the connection part on the signal circuit board (2) from top to bottom.

3. The control box of the vehicle charger according to claim 2, characterized in that: The connection portion of the power contact piece (102) and the connection portion of the power circuit board (3) are crimped to each other using crimping bolts.

4. The control box of the vehicle charger according to claim 1 or 2, characterized in that: One of the wiring part and the connecting part is a clip structure (201), the clip structure (201) comprises a pair of elastic clips, and the other of the wiring part and the connecting part is clamped between the pair of elastic clips.

5. The control box of the vehicle charger according to claim 4, characterized in that: The clip structure (201) is arranged on the circuit board.

6. The control box of the vehicle charger according to claim 4, characterized in that: At least one of the paired elastic clips has a clamping portion (202) bent in a direction close to the other elastic clip.

7. The control box of the vehicle charger according to claim 6, characterized in that: The elastic clips are arranged symmetrically to each other.

8. The control box of the vehicle charger according to claim 4, characterized in that: In the pair of elastic clips, the front ends of the two elastic clips are provided with flanges bent in directions away from each other.

9. The control box of the vehicle charger according to claim 4, characterized in that: In the paired elastic clips, the root positions of the two elastic clips are connected with elastic force reinforcement blocks (205).

10. A vehicle charger, comprising a control box, characterized in that: The control box is the control box of the vehicle charger according to any one of claims 1 to 9.

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