Vehicle-mounted charger

Abstract

The utility model relates to the technical field of vehicle-mounted chargers, in particular to a vehicle-mounted charger. The vehicle-mounted charger comprises a connecting plug, a wire and an external charging body. A positive electrode end, a negative electrode end and a first charging interface are arranged on the connecting plug; a first circuit board is arranged in the connecting plug, and the positive electrode end, the negative electrode end and the first charging interface are electrically connected with the first circuit board. The external charging body is provided with a second charging interface, a second circuit board is arranged in the external charging body, and the second charging interface is electrically connected with the second circuit board. One end of the wire is electrically connected with the anode end and the cathode end, and the other end is electrically connected with the second circuit board. The first circuit board outputs electric energy to the charging device through the first charging interface, and the second circuit board outputs electric energy to the charging device through the second charging interface. The connecting plug or the external charging body is stable in charging and stable in power distribution during high-power charging.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted chargers, in particular to a vehicle-mounted charger. Background Art

[0002] A car charger is a device used to charge electronic devices (such as mobile phones, tablets, navigation systems, etc.) in a car or other vehicle. The car charger is usually connected to the vehicle's power socket, such as the car's cigarette lighter socket, and charges the device through the vehicle's electrical system.

[0003] Current on-board chargers, in addition to the charging port on their plug connector, also connect to an expansion dock via a wire. The expansion dock also has a charging port, providing multiple charging ports and enabling longer-distance charging. However, the charging ports on the plug connector and the expansion dock are currently controlled by the same circuit board. This results in unstable charging and power distribution when the plug connector or the expansion dock is used for high-power charging. Utility Model Content

[0004] The embodiment of the present utility model provides a vehicle charger to solve the problem in the prior art that the charging port on the plug connector and the charging port on the extended charging base are mainly controlled by the same circuit board, and the charging is unstable and the power distribution is unstable when the plug connector or the extended charging base is charged at high power.

[0005] The utility model discloses a vehicle charger, comprising a plug connector, a wire and an external charging body; the plug connector is provided with a positive terminal, a negative terminal and a first charging interface; a first circuit board is provided in the plug connector, and the positive terminal, the negative terminal and the first charging interface are electrically connected to the first circuit board; a second charging interface is provided on the external charging body, a second circuit board is provided in the external charging body, and the second charging interface is electrically connected to the second circuit board; one end of the wire is electrically connected to the positive terminal and the negative terminal, and the other end is electrically connected to the second circuit board; the first circuit board outputs electric energy to the charging device through the first charging interface, and the second circuit board outputs electric energy to the charging device through the second charging interface.

[0006] Optionally, two second circuit boards are provided, and the two second circuit boards are respectively connected to the wires. At least two second charging interfaces are provided, and at least one of the second charging interfaces is electrically connected to one of the second circuit boards, and at least one of the second charging interfaces is electrically connected to another second circuit board.

[0007] Optionally, the two second circuit boards are arranged opposite to each other, and a third circuit board is further provided in the external charging body; the third circuit board is located between the two second circuit boards and is electrically connected to the two second circuit boards respectively.

[0008] Optionally, a negative electrical connection spring is provided on the first circuit board, and the negative electrical connection spring is provided with two elastic arms arranged opposite to each other; the negative end includes two negative arms arranged opposite to each other, and the two negative arms are provided with protrusions; the two protrusions are respectively embedded in the two openings on the side of the plug connector; the two elastic arms are respectively inserted into the concave cavities of the two protrusions.

[0009] Optionally, the positive terminal is mounted on an end of the plug connector away from the wire; an avoidance slot is provided on the negative electrical connection spring, and the positive wire of the wire passes through the avoidance slot and is connected to the positive terminal.

[0010] Optionally, a positive electrical connector is provided on the first circuit board, and a mounting slot is defined on the positive electrical connector. A first ring edge is provided on the side of the positive terminal connected to the positive wire. The first ring edge is secured to the side of the mounting slot near the positive wire, and the other end extends from the end of the plug connector away from the wire. A second ring edge is provided on the side of the positive terminal away from the positive electrical connector. A spring is sleeved on the positive terminal, with one end of the spring abutting against the positive electrical connector and the other end abutting against the second ring edge.

[0011] Optionally, a welding ring edge is extended from the second ring edge toward the positive electrode line. A welding opening is provided on the welding ring edge, and the positive electrode line is welded in the welding ring edge.

[0012] Optionally, the negative terminal includes a negative electrode connecting arm, and the negative electrode line of the wire is electrically connected to the negative electrode connecting arm.

[0013] Optionally, the vehicle charger further includes a clamping member, the clamping member including a mounting plate, a clamping plate and a torsion spring, the mounting plate being mounted on a side of the external charging body, the clamping plate being rotatably mounted on the mounting plate, and the torsion spring being mounted between the clamping plate and the mounting plate to provide an elastic clamping force for the clamping plate to be clamped on the mounting plate;

[0014] One end of the clamping plate is rotatably mounted on one end of the mounting plate; a circle of first limiting convex edges is provided on one end of the mounting plate away from the rotating connection position of the clamping plate, and limiting openings are provided on two opposite sides of the first limiting convex edges.

[0015] Optionally, a first buffer pad is provided in the first limiting convex edge, a circle of second limiting convex edges is provided on the clamping plate corresponding to the first limiting convex edge, and a second buffer pad is provided in the second limiting convex edge.

[0016] Compared with the prior art, the beneficial effect of the vehicle charger provided by the embodiment of the present invention is as follows: the vehicle charger of the present invention is provided with a plug connector and an external charging body, wherein the external charging body is connected to the plug connector via a wire, and the plug connector and the external charging body are respectively provided with a first charging interface and a second charging interface, both of which can provide charging interfaces, and a first circuit board is provided in the plug connector, and a second circuit board is provided in the external charging body, the first circuit board directly draws power from the external power supply through the positive terminal and the negative terminal, and outputs power to the first charging interface to charge the charging device; the second circuit board is connected to the positive terminal and the negative terminal via a wire, draws power from the external power supply, and outputs power to the second charging interface to charge the charging device. In this way, the plug connector and the external charging body are each provided with an independent circuit board, independently controlling the first charging interface and the second charging interface, and both draw power directly from the power supply, so that the charging of the plug connector or the external charging body is stable when performing high-power charging, and the power distribution is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments, in which:

[0018] Figure 1 This is a schematic diagram of a vehicle charger according to an embodiment of the present utility model;

[0019] Figure 2 This is another schematic diagram of the vehicle charger according to an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the interior of the vehicle charger according to an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the interior of the plug connector according to an embodiment of the present utility model;

[0022] Figure 5 This is an internal exploded view of the plug connector according to an embodiment of the present utility model;

[0023] Figure 6 This is an exploded schematic diagram of the clamping member of an embodiment of the present utility model;

[0024] Figure 7 It is a schematic diagram of a clamping member according to an embodiment of the present utility model.

[0025] The reference numerals in the figures are:

[0026] 1. Plug connector; 11. Positive terminal; 111. First ring edge; 112. Second ring edge; 113. Welding ring edge; 114. Welding opening; 12. Negative terminal; 121. Negative arm; 121a. Outer protrusion; 122a1. Concave cavity; 122. Negative connecting arm; 13. First charging port; 14. First circuit board; 141. Negative electrical connecting spring; 141a. Elastic arm; 141b. Avoidance slot; 142. Positive electrical connecting piece; 1 42a, mounting slot; 15, opening; 16, spring; 2, wire; 21, positive line; 22, negative line; 3, external charging body; 31, second charging port; 32, second circuit board; 33, third circuit board; 4, clamping member; 41, mounting plate; 411, first limiting ridge; 411a, limiting opening; 412, first buffer pad; 42, clamping plate; 421, second limiting ridge; 422, second buffer pad; 43, torsion spring. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. Now, in conjunction with the accompanying drawings, a detailed description of the preferred embodiments of the present utility model will be given.

[0028] The present invention provides a vehicle charger. Figures 1 to 3 As shown, the on-board charger includes a plug connector 1, a wire 2, and an external charging body 3. The plug connector 1 is provided with a positive terminal 11, a negative terminal 12, and a first charging interface 13; a first circuit board 14 is provided inside the plug connector 1, and the positive terminal 11, the negative terminal 12, and the first charging interface 13 are electrically connected to the first circuit board 14. A second charging interface 31 is provided on the external charging body 3, and a second circuit board 32 is provided inside the external charging body 3, and the second charging interface 31 is electrically connected to the second circuit board 32. One end of the wire 2 is electrically connected to the positive terminal 11 and the negative terminal 12, and the other end is electrically connected to the second circuit board 32. The first circuit board 14 outputs power to the charging device through the first charging interface 13, and the second circuit board 32 outputs power to the charging device through the second charging interface 31.

[0029] The vehicle charger of the present invention is provided with a plug connector 1 and an external charging body 3, wherein the external charging body 3 is connected to the plug connector 1 via a wire 2. The plug connector 1 and the external charging body 3 are respectively provided with a first charging interface 13 and a second charging interface 31, both of which can provide charging interfaces. In addition, a first circuit board 14 is provided in the plug connector 1, and a second circuit board 32 is provided in the external charging body 3. The first circuit board 14 directly draws power from the external power supply via the positive terminal 11 and the negative terminal 12, and outputs power to the first charging interface 13 to charge the charging device; the second circuit board 32 is connected to the positive terminal 11 and the negative terminal 12 via the wire 2, draws power from the external power supply, and outputs power to the second charging interface 31 to charge the charging device. In this way, the plug connector 1 and the external charging body 3 are each provided with an independent circuit board, independently controlling the first charging interface 13 and the second charging interface 31, and both draw power directly from the power supply. When the plug connector 1 or the external charging body 3 is performing high-power charging, the charging is stable and the power distribution is stable.

[0030] Specifically, in actual applications, the first circuit board 14 and the second circuit board 32 can be designed based on the charging requirements of the first charging interface 13 and the second charging interface 31. For example, if the first charging interface 13 is for low-power charging, a low-power charging adapter circuit can be designed on the first circuit board 14 to achieve low-power charging of the first charging interface 13, while a high-power charging adapter circuit can be designed on the second circuit board 32 to achieve high-power charging of the second charging interface 31. The low-power charging adapter circuit and the high-power adapter circuit can adopt conventional circuit designs and are not further described here. The first charging interface 13 can be a Type-C interface, etc., and the second charging interface 31 can be a Type-C interface, a Type-A interface, etc.

[0031] There are two second circuit boards 32, each of which is connected to the wire 2. There are at least two second charging interfaces 31, at least one of which is electrically connected to one of the second circuit boards 32, and at least one of which is electrically connected to another second circuit board 32. By providing two independent second circuit boards 32 in the external charging body 3 and configuring at least one second charging interface 31 for each circuit board, this design improves the charging capacity of the on-board charger. Specifically, this means that the charger can provide power to multiple devices at the same time without interfering with each other. In addition, each second circuit board 32 is directly connected to the wire 2, and each second charging interface 31 can directly obtain power from the power supply, which helps to provide stable power output, thereby improving the stability of the charger. Specifically, the second charging interface 31 on one of the second circuit boards 32 can be a Type-C interface, and the second charging interface 31 on the other second circuit board 32 has two, namely a Type-C interface and a Type-A interface.

[0032] The two second circuit boards 32 are arranged opposite each other, and a third circuit board 33 is also provided in the external charging body 3; the third circuit board 33 is located between the two second circuit boards 32 and is electrically connected to the two second circuit boards 32 respectively. The third circuit board 33 is electrically connected to the two second circuit boards 32 to coordinate the power output of the two second circuit boards 32. At the same time, the third circuit board 33 can also play a role in supporting the two second circuit boards 32. Specifically, both second circuit boards 32 are provided with jacks, and both opposite sides of the third circuit board 33 are provided with pins, which are plugged into the jacks on the two second circuit boards 32 respectively.

[0033] like Figure 4 and Figure 5 As shown, the first circuit board 14 is provided with a negative electrode electrical connection spring 141, which is provided with two opposing elastic arms 141a. The negative terminal 12 includes two opposing negative electrode arms 121, each of which is provided with a protrusion 121a. The two protrusions 121a are respectively embedded in two openings 15 on the side of the plug connector 1. The two elastic arms 141a are respectively inserted into the recessed cavities 122a1 of the two protrusions 121a. The elastic arms 141a have an elastic force. Under the action of the elastic force of the elastic arms 141a, the protrusions 121a of the two negative electrode arms 121 are embedded in the two openings 15. When the plug connector 1 is plugged in to draw power, the protrusions 121a of the two negative electrode arms 121 can be tightly abutted against the negative electrode of the power supply terminal under the elastic force of the elastic arms 141a, ensuring the electrical connection stability of the plug connector 1 when drawing power. The two elastic arms 141a are respectively inserted into the concave cavities 122a1 of the two outer protrusions 121a. The concave cavities 122a1 can provide a location for the elastic arms 141a and also limit the elastic arms 141a, making it difficult for the elastic arms 141a to shift, thereby ensuring a stable connection between the elastic arms 141a and the negative terminal 12. The negative electrode electrical connection spring 141 can be made of a conductive metal such as a copper sheet.

[0034] The positive terminal 11 is mounted on the end of the plug connector 1 that is away from the wire 2. A relief slot 141b is formed on the negative electrical connection spring 141. The positive wire 21 of the wire 2 passes through the relief slot 141b and connects to the positive terminal 11. The provision of the relief slot 141b facilitates the routing of the positive wire 21 of the wire 2 and facilitates its connection to the positive terminal 11. Furthermore, the relief slot 141b serves as a position limiter for the routing of the positive wire 21.

[0035] A positive electrical connection piece 142 is provided on the first circuit board 14. A mounting slot 142a is defined on this piece. A first rim 111 is provided on the side of the positive terminal 11 connected to the positive wire 21. The first rim 111 is positioned on the side of the mounting slot 142a near the positive wire 21 of the lead 2, and its other end extends from the end of the connector 1 away from the lead 2. A second rim 112 is provided on the side of the positive terminal 11 away from the positive electrical connection piece 142. A spring 16 is sleeved on the positive terminal 11, with one end of the spring 16 resting on the positive electrical connection piece 142 and the other end resting on the second rim 112. The first rim 111 forms a stop with the mounting slot 142a, preventing the positive terminal 11 from separating from the positive electrical connection piece 142 and ensuring the installation of the positive terminal 11 and its electrical connection with the positive electrical connection piece 142. During use, the positive terminal 11 receives power from the positive electrode of the power source and transmits the current to the first circuit board 14 through the positive electrical connection piece 142. The spring 16 abuts against the positive electrical connection piece 142 and the second ring edge 112, giving the positive terminal 11 elasticity and ensuring that it is firmly in contact with the positive electrode of the power source during use.

[0036] Specifically, a welding rim 113 extends from the second rim 112 toward the positive cable 21. A welding opening 151 is defined in the welding rim 113, and the positive cable 21 is welded to the welding rim 113. The provision of the welding rim 113 facilitates connection between the positive cable 21 and the positive terminal 11, while the provision of the welding opening 151 facilitates welding.

[0037] Furthermore, the negative terminal 12 includes a negative electrode connecting arm 122 , and the negative electrode line 22 of the lead 2 is electrically connected to the negative electrode connecting arm 122 , which facilitates the connection of the negative electrode line 22 .

[0038] Furthermore, if Figure 6 and Figure 7 As shown, the on-board charger also includes a clamping member 4, which comprises a mounting plate 41, a clamping plate 42, and a torsion spring 43. The mounting plate 41 is mounted on the side of the external charging unit 3, and the clamping plate 42 is rotatably mounted on the mounting plate 41. The torsion spring 43 is installed between the clamping plate 42 and the mounting plate 41 to provide an elastic clamping force for the clamping plate 42 to clamp on the mounting plate 41. The clamping member 4 can clamp the external charging unit 3 in its storage position, facilitating the use of the on-board charger. Specifically, one end of the clamping plate 42 is rotatably mounted on one end of the mounting plate 41. The end of the mounting plate 41, away from the rotational connection point of the clamping plate 42, is provided with a first retaining flange 411. The first retaining flange 411 defines retaining openings 411a on opposite sides. The retaining openings 411a provide clearance when the clamping member 4 is clamped onto a rod-shaped or columnar object. During clamping, the rod-shaped or columnar object is positioned within the retaining openings 411a, improving the stability of the clamping.

[0039] Specifically, the mounting plate 41 can be mounted on the side of the external charging body 3 by screws.

[0040] Furthermore, a first buffer pad 412 is provided within the first limiting ridge 411. The first buffer pad 412 can act as a buffer during clamping to protect the clamped object; it can also improve its fit with the clamped object through deformation, increase the clamping contact area, and enhance clamping stability. A second limiting ridge 421 is provided on the clamping plate 42 corresponding to the first limiting ridge 411, and a second buffer pad 422 is provided within the second limiting ridge 421. The second limiting ridge 421 limits the installation of the second buffer pad 422. The second buffer pad 422 can act as a buffer during clamping to protect the clamped object; it can also improve its fit with the clamped object through deformation, increase the clamping contact area, and enhance clamping stability.

[0041] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Those skilled in the art may modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein; and all these modifications and replacements should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A vehicle charger, characterized in that: Including plug connector, wire and external charging body; The plug connector is provided with a positive terminal, a negative terminal and a first charging interface; a first circuit board is provided in the plug connector, and the positive terminal, the negative terminal and the first charging interface are electrically connected to the first circuit board; The external charging body is provided with a second charging interface, the external charging body is provided with a second circuit board, and the second charging interface is electrically connected to the second circuit board; One end of the wire is electrically connected to the positive terminal and the negative terminal, and the other end is electrically connected to the second circuit board; The first circuit board outputs electric energy to the charging device through the first charging interface, and the second circuit board outputs electric energy to the charging device through the second charging interface.

2. The vehicle charger according to claim 1, characterized in that: There are two second circuit boards, and the two second circuit boards are respectively connected to the wires. There are at least two second charging interfaces, at least one of which is electrically connected to one of the second circuit boards, and at least one of which is electrically connected to another second circuit board.

3. The vehicle charger according to claim 2, characterized in that: The two second circuit boards are arranged opposite to each other, and a third circuit board is further provided in the external charging body; the third circuit board is located between the two second circuit boards and is electrically connected to the two second circuit boards respectively.

4. The vehicle charger according to any one of claims 1 to 3, characterized in that: A negative electrical connection spring is provided on the first circuit board, and the negative electrical connection spring is provided with two elastic arms arranged opposite to each other; the negative terminal includes two negative arms arranged opposite to each other, and the two negative arms are provided with external protrusions; the two external protrusions are respectively embedded in the two openings on the side of the plug connector; the two elastic arms are respectively inserted into the concave cavities of the two external protrusions.

5. The vehicle charger according to claim 4, characterized in that: The positive terminal is mounted on an end portion of the plug connector away from the wire; an avoidance slot is provided on the negative electrical connection spring, and the positive wire of the wire passes through the avoidance slot and is connected to the positive terminal.

6. The vehicle charger according to claim 5, characterized in that: A positive electrical connection piece is provided on the first circuit board, and a mounting slot is provided on the positive electrical connection piece. A first ring edge is provided on the side of the end of the positive terminal connected to the positive wire. The first ring edge is clamped on the side of the mounting slot close to the positive wire of the wire, and the other end extends out from the end of the plug connector away from the wire; a second ring edge is provided on the side of the end of the positive terminal away from the positive electrical connection piece, and a spring is sleeved on the positive terminal, one end of the spring presses against the positive electrical connection piece, and the other end presses against the second ring edge.

7. The vehicle charger according to claim 6, characterized in that: A welding ring edge is extended from the second ring edge toward the positive electrode line. A welding opening is formed on the welding ring edge. The positive electrode line is welded in the welding ring edge.

8. The vehicle charger according to claim 4, characterized in that: The negative terminal includes a negative electrode connecting arm, and the negative electrode line of the lead is electrically connected to the negative electrode connecting arm.

9. The vehicle charger according to any one of claims 1 to 3, characterized in that: The on-board charger further includes a clamping member, which includes a mounting plate, a clamping plate, and a torsion spring. The mounting plate is mounted on a side of the external charger, the clamping plate is rotatably mounted on the mounting plate, and the torsion spring is mounted between the clamping plate and the mounting plate to provide an elastic clamping force for the clamping plate to be clamped on the mounting plate. One end of the clamping plate is rotatably mounted on one end of the mounting plate; a circle of first limiting convex edges is provided on one end of the mounting plate away from the rotational connection position of the clamping plate, and limiting openings are provided on two opposite sides of the first limiting convex edges.

10. The vehicle charger according to claim 9, characterized in that: A first buffer pad is provided in the first limiting convex edge, a circle of second limiting convex edges is provided on the clamping plate corresponding to the first limiting convex edge, and a second buffer pad is provided in the second limiting convex edge.

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