Charger

Abstract

The utility model discloses a charger, which comprises a first circuit board provided with an alternating current input circuit, and the alternating current input circuit comprises a first high-voltage component assembly; the second circuit board is provided with an alternating current-direct current conversion circuit, and the alternating current-direct current conversion circuit comprises a second high-voltage component assembly; the third circuit board is provided with a direct current output circuit, and the direct current output circuit comprises an output interface; the first circuit board and the third circuit board are arranged at preset angles relative to the second circuit board, the first high-voltage component assembly and the second high-voltage component assembly are arranged adjacently, and the output interface is arranged on the side, away from the second high-voltage component assembly, of the third circuit board. The circuit components on different circuit boards can be adjacently arranged in a space formed by folding and limiting a plurality of circuit boards, so that the overall size of a charger product can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply, in particular to a charger. Background Art

[0002] Currently, chargers for charging electronic devices on the market usually integrate circuits on an integral circuit board. Thus, in the circuit board design, it is difficult to optimize the layout of a large number of electronic components to reduce the overall size of the circuit board, which results in a larger product size of the charger. Utility Model Content

[0003] In order to solve the existing technical problems, the present application provides a charger that can effectively reduce the volume of the product.

[0004] To achieve the above objectives, the present application provides the following technical solutions:

[0005] A charger, comprising:

[0006] A first circuit board is provided with an AC input circuit, wherein the AC input circuit includes a first high-voltage component assembly;

[0007] A second circuit board is provided with an AC-DC conversion circuit, wherein the AC-DC conversion circuit includes a second high-voltage component assembly;

[0008] A third circuit board is provided with a DC output circuit, wherein the DC output circuit includes an output interface;

[0009] The first circuit board and the third circuit board are both arranged at a preset angle relative to the second circuit board, and the first high-voltage component assembly is arranged adjacent to the second high-voltage component assembly, and the output interface is arranged on a side of the third circuit board away from the second high-voltage component assembly.

[0010] Among them, the first high-voltage component assembly includes a filter circuit device and a rectifier; the second high-voltage component assembly includes a high-voltage filter capacitor and a transformer; the filter circuit device and the rectifier are respectively arranged adjacent to the high-voltage filter capacitor and / or the transformer.

[0011] The filter circuit device, the rectifier and the high-voltage filter capacitor are arranged adjacent to each other along the length direction of the second circuit board, and the filter circuit device, the rectifier and the transformer are arranged adjacent to each other along the width direction of the second circuit board;

[0012] Alternatively, the filter circuit device, the rectifier and the high-voltage filter capacitor are arranged adjacent to each other along the width direction of the second circuit board, and the filter circuit device, the rectifier and the transformer are arranged adjacent to each other along the length direction of the second circuit board.

[0013] Among them, the second circuit board has a first end and a second end opposite to each other in its length direction, the filter circuit device and the rectifier are arranged on the first circuit board, and are arranged together with the transformer along the width direction of the second circuit board; the first circuit board and the transformer are arranged at the first end, and the high-voltage filter capacitor is arranged close to the second end; and the high-voltage filter capacitor is arranged adjacent to the first circuit board in the length direction of the second circuit board, and the high-voltage filter capacitor is arranged adjacent to the transformer in the width direction of the second circuit board.

[0014] Among them, the second circuit board has a first end and a second end opposite to each other in its length direction, the filter circuit device and the rectifier are arranged on the first circuit board, and are arranged along the width direction of the second circuit board with the high-voltage filter capacitor; the first circuit board and the high-voltage filter capacitor are arranged at the first end, the transformer is arranged close to the second end, and the transformer and the first circuit board, and the high-voltage filter capacitor and the second circuit board are arranged adjacent to each other in the length direction.

[0015] Among them, the third circuit board divides the space on one side of the second circuit board into a high-voltage device space and a low-voltage device space; the first high-voltage component assembly and the second high-voltage component assembly are arranged in the high-voltage device space, the DC output circuit also includes a low-voltage filter circuit, the low-voltage filter circuit includes a low-voltage filter capacitor, and the low-voltage filter capacitor and the output interface are arranged in the low-voltage device space.

[0016] There are multiple output interfaces, the number of the low-voltage filter capacitors is consistent with the number of the output interfaces, and / or the low-voltage filter capacitors are arranged on the second circuit board.

[0017] Among them, the DC output circuit also includes a step-down circuit corresponding to the output interface, the step-down circuit is connected to the low-voltage filter circuit, the step-down circuit includes a step-down inductor device arranged in the high-voltage device space, and the step-down inductor device is arranged on the third circuit board.

[0018] Wherein, the step-down inductor device is provided with a partition at a side away from the third circuit board.

[0019] The third circuit board is located near one end of the second circuit board and is parallel to the width direction of the second circuit board, and one end of the output interface away from the third circuit board is flush with the end surface of the second circuit board.

[0020] Wherein, the first circuit board and the third circuit board are both perpendicular to the second circuit board.

[0021] The charger provided in the above embodiment includes a first circuit board provided with an AC input circuit, a second circuit board provided with an AC-DC conversion circuit, and a third circuit board provided with a DC output circuit. The first circuit board and the third circuit board are both arranged at a preset angle relative to the second circuit board, and the first high-voltage component assembly on the first circuit board is arranged adjacent to the second high-voltage component assembly on the second circuit board. In this way, by splitting the internal circuit of the charger into multiple separate circuit boards, the multiple circuit boards can form a folded relative position relationship in space, and the high-voltage component assemblies on different circuit boards can be adjacent to each other in the space formed based on the folding limitation to maximize the use of the space, and the space for installing the output interface is formed based on the folding, so as to achieve high and low voltage electrical separation, thereby effectively reducing the overall volume size of the charger product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. 4 is a schematic diagram of the three-dimensional structure of a charger in one embodiment.

[0023] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the charger shown.

[0024] Figure 3 Schematic diagram of an AC input circuit and an AC-DC conversion circuit in an embodiment.

[0025] Figure 4 FIG. 4 is a circuit diagram of a portion of a DC output circuit in an embodiment.

[0026] Figure 5 FIG. 4 is a circuit diagram of another part of a DC output circuit in an embodiment.

[0027] Figure 6 FIG. 4 is a cross-sectional view of a charger in one embodiment.

[0028] Figure 7 for Figure 6 The illustrated embodiment is a three-dimensional schematic diagram of the charger without the outer shell.

[0029] Figure 8 FIG. 4 is a cross-sectional view of a charger in another embodiment.

[0030] Fig. 9 for Figure 8 The illustrated embodiment is a three-dimensional schematic diagram of the charger without the outer shell. DETAILED DESCRIPTION

[0031] The technical solution of the utility model is further elaborated in detail below in conjunction with the accompanying drawings and specific embodiments of the specification.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the implementation of the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0033] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0034] It should be noted that in the following description, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0035] In the following description, the expression "some embodiments" is involved, which describes a subset of all possible embodiments. It should be noted that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.

[0036] In the following description, the terms "first, second, third" are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It is understandable that "first, second, third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0037] See also Figure 1 and Figure 2, a charger 100 provided in an embodiment of the present application, comprising: a first circuit board 10, provided with an AC input circuit 11, the AC input circuit 11 including a first high-voltage component assembly. In an optional specific embodiment, the first high-voltage component assembly mainly includes an AC input terminal 12, an electromagnetic interference circuit 13 connected to the AC input terminal 12, and a rectifier 14 for converting AC to DC. A second circuit board 20, provided with an AC-DC conversion circuit 21, the AC-DC conversion circuit 21 including a second high-voltage component assembly. In an optional specific embodiment, the second high-voltage component assembly mainly includes a high-voltage filter circuit 22 and a transformer T1, the high-voltage filter circuit 22 is used to be connected to the output side of the rectifier 14, and the transformer T1 is connected to the high-voltage filter circuit 22. A third circuit board 30, provided with a DC output circuit 31, the DC output circuit 31 including an output interface 33. The first circuit board 10 and the third circuit board 30 are both arranged at a preset angle relative to the second circuit board 20, and the first high-voltage component assembly is arranged adjacent to the second high-voltage component assembly, and the output interface 33 is arranged on the side of the third circuit board 30 away from the second high-voltage component assembly.

[0038] Optionally, the electromagnetic interference circuit 13 includes a filter circuit device. Taking the example that the first high-voltage component assembly includes a filter circuit device and a rectifier 14, and the second high-voltage component assembly includes a high-voltage filter circuit 22 and a transformer T1, the filter circuit device and the rectifier 14 are respectively arranged adjacent to the high-voltage filter capacitors EC1-EC4 and / or the transformer T1 in the high-voltage filter circuit 22 on the second circuit board 20.

[0039] It should be noted that the adjacent setting in the present application means that the components are arranged adjacently and closely, and there will be a reasonable assembly gap between the components, which can be understood as a compact stacking setting and will not be explained below.

[0040] In the above embodiment, the charger 100 includes a first circuit board 10 provided with an AC input circuit 11, a second circuit board 20 provided with an AC-DC conversion circuit 21, and a third circuit board 30 provided with a DC output circuit 31. The first circuit board 10 and the third circuit board 30 are both arranged at a preset angle relative to the second circuit board 20, and the first high-voltage component assembly on the first circuit board 10 is adjacent to the second high-voltage component assembly on the second circuit board 20. In this way, by splitting the internal circuit of the charger 100 into a plurality of separate circuit boards, a folded relative position relationship can be formed in space by utilizing the plurality of circuit boards. Large high-voltage component assemblies on different circuit boards can be adjacently arranged in the space formed based on the folding limitation to maximize the use of the space, and a space for installing the output interface 33 is formed based on the folding, thereby realizing high and low voltage electrical separation, thereby effectively reducing the overall volume size of the charger 100 product.

[0041] Please refer to Figure 3The AC input terminal 12 of the AC input circuit 11 is used to connect to the mains power socket. A protection circuit is provided between the AC input terminal 12 of the AC input circuit 11 and the electromagnetic interference circuit 13, such as a fuse connected in series between the AC input terminal 12 and the electromagnetic interference circuit 13, to achieve overcurrent protection. The filter circuit components include a filter inductor LF1 and filter capacitors RX1-RX4, which can play a role in preventing electromagnetic interference on the AC input side. The rectifier 14 is used to convert high-voltage AC power into high-voltage pulsed DC power.

[0042] The AC-DC conversion circuit 21 is connected to the AC input circuit 11, and the high-voltage filter circuit 22 is connected after the rectifier 14 to convert the high-voltage pulsed DC into DC power, and provide DC high voltage for the transformer T1, so that the transformer T1 can be used in the 100-220V AC voltage range. The number of filter capacitors in the high-voltage filter circuit 22 is related to the power size and input voltage range of the charger 100 product, and is not limited here. After the transformer T1 is connected to the high-voltage filter capacitors EC1-EC4, it is used to convert the high-voltage AC power into low-voltage DC power.

[0043] Please refer to Figure 4 and Figure 5 The DC output circuit 31 is connected to the AC-DC conversion circuit 21, and the DC output of the AC-DC conversion circuit 21 can be stepped down again to obtain a desired DC output voltage, which is output to the outside through the output interface 33. The output interface 33 is used to connect to an external electrical device, and various known standard interface types can be used, including but not limited to a type-C interface.

[0044] Please refer to Figure 6 and Figure 7In some embodiments, the third circuit board 30 divides the space on one side of the second circuit board 20 into a high-voltage device space 37 and a low-voltage device space 39; the first high-voltage component assembly and the second high-voltage component assembly are arranged in the high-voltage device space 37, and the DC output circuit also includes a low-voltage filter circuit 32, and the low-voltage filter circuit 32 includes a low-voltage filter capacitor C25, and the low-voltage filter capacitor C25 and the output interface 33 are arranged in the low-voltage device space 39. Still taking the first high-voltage component assembly including the filter circuit device and the rectifier 14, and the second high-voltage component assembly including the high-voltage filter circuit 22 and the transformer T1 as an example, the filter circuit device, the rectifier 14, the high-voltage filter capacitors EC1-EC4 and the transformer T1 are all located in the high-voltage device space 37, and the low-voltage filter circuit 32 and the output interface 33 are located in the low-voltage device space 39. In this embodiment, the low-voltage filter circuit 32 mainly includes a low-voltage filter capacitor C25 and a low-voltage filter inductor L2, which plays a filtering role for the output side voltage of the charger 100, so that a purer DC power can be output. The third circuit board 30 is used to separate the high voltage and the low voltage, and the low voltage circuit components in the charger 100 are all arranged in the low voltage component space 39 of the third circuit board 30, so that under the condition of meeting the safe electrical insulation distance, the space on the second circuit board 20 is fully utilized, and the relative position relationship between the multiple circuit boards is further optimized to reduce the overall volume size of the charger 100 product.

[0045] Optionally, the filter circuit device, the rectifier 14 and the high-voltage filter capacitors EC1-EC4 are arranged adjacent to each other along the length direction of the second circuit board 20, and the filter circuit device, the rectifier 14 and the transformer T1 are arranged adjacent to each other along the width direction of the second circuit board 20. The second circuit board 20 has a first end and a second end opposite to each other in its length direction, the filter circuit device and the rectifier 14 are arranged on the first circuit board 10, the filter circuit device, the rectifier 14 and the transformer T1 are arranged along the width direction of the second circuit board 20, and the filter circuit device, the rectifier 14 and the transformer T1 are adjacent to each other; the first circuit board 10 and the transformer T1 are arranged on the first end of the second circuit board 20, and are aligned at the end face of the first end. The high-voltage filter capacitors EC1-EC4 are arranged near the second end of the second circuit board 20; and the high-voltage filter capacitors EC1-EC4 are arranged adjacent to the first circuit board 10 and the electronic components arranged thereon in the length direction of the second circuit board 20; and the high-voltage filter capacitors EC1-EC4 are arranged adjacent to the transformer T1 in the width direction of the second circuit board 20. Specifically, the transformer T1 and the first circuit board 10 are arranged on the second circuit board 20 in parallel with each other. In the length direction of the second circuit board 20, the transformer T1 includes a first end aligned with the first circuit board 10 and an opposite second end. Above the second circuit board 20, the area directly opposite to the first end of the transformer T1 forms a first accommodation space, and the filter circuit device and the rectifier 14 are located in the first accommodation space; the area directly opposite to the second end of the transformer T1 forms a second accommodation space, and the high-voltage filter capacitors EC1-EC4 are arranged in the second accommodation space. Among them, in the AC input circuit 11, the transformer T1 is arranged on the side of the second circuit board 20 close to the AC input terminal 12, and the first circuit board 10 is arranged on the same side of the second circuit board 20 where the transformer T1 is arranged, and is parallel to the length direction of the transformer T1. The width of the first circuit board 10 is less than the length of the transformer T1, and the first circuit board 10 and the transformer T1 are parallel to each other and spaced apart, and are arranged on opposite sides of the second circuit board 20 close to the AC input terminal 12. In this way, in the AC input circuit 11 provided on the first circuit board 10, the circuit components of larger size can be accommodated in the first accommodation space formed between the first end of the first circuit board 10 and the transformer T1. In the length direction of the second circuit board 20, the high-voltage filter capacitors EC1-EC4 are aligned with the first circuit board 10 and accommodated in the remaining space above the second circuit board 20 except for the position where the transformer T1 and the first circuit board 10 are located, that is, in the second accommodation space directly opposite to the second end of the transformer T1 that is not aligned with the first circuit board 10.In an optional specific embodiment, the AC-DC conversion circuit 21 includes only one transformer T1. By arranging the transformer T1 to be partially opposite to and partially offset from the first circuit board 10, more space can be provided for installing high-voltage filter capacitors EC1-EC4, which is conducive to being compatible with a larger number of high-voltage filter capacitors EC1-EC4 to adapt to a certain range of high-voltage AC voltage inputs, and the product power and voltage range are larger.

[0046] Optionally, the DC output circuit 31 further includes a step-down circuit 35 corresponding to the output interface 33, the step-down circuit 35 is connected to the low-voltage filter circuit 32, and the step-down circuit 35 includes a step-down inductor 351 disposed in the high-voltage device space 37. Taking the case where only one transformer T1 is disposed on the second circuit board 20 as an example, in order to obtain an output voltage that better matches the required size at the output interface 33, the DC output circuit 31 is further configured to include a step-down circuit 35 connected to the output side of the transformer T1. In the DC output circuit 31, the step-down inductor 351, as one of the main components of the step-down circuit 35, occupies a large space, and is disposed on the side of the third circuit board 30 facing the transformer T1.

[0047] Optionally, the third circuit board 30 is located near one end of the second circuit board 20 and is parallel to the width direction of the second circuit board 20, and the end of the output interface 33 away from the third circuit board 30 is flush with the end surface of the second circuit board 20. As one of the main circuit components occupying a large space in the DC output circuit 31, the width of the low-voltage device space 39 formed on one side of the third circuit board 30 is designed to be equal to the length of the output interface 33, so that the end of the output interface 33 protruding in the low-voltage device space 39 away from the third circuit board 30 is flush with the end surface of the second circuit board 20. In this way, the size of the horizontal cross section of the charger 100 can be mainly determined by the size of the second circuit board 20, and the size of the vertical cross section can be mainly determined by the height of the first circuit board 10 and the third circuit board 30 after being set at a preset angle relative to the second circuit board 20, so as to maximize the use of the space formed by the three circuit boards together and reduce the overall size of the charger 100.

[0048] In the embodiment shown in the above figures, the first circuit board 10 and the third circuit board 30 are respectively perpendicular to the second circuit board 20, which can form a minimum assembly space, minimize the volume of the charger, and facilitate assembly. In the actual production process, there will be errors in each assembly relationship. When the first circuit board 10 and the third circuit board 30 are respectively perpendicular to the second circuit board 20, plus or minus 10 degrees are also within the vertical protection range. It is understandable that the preset angles between the first circuit board 10 and the third circuit board 30 respectively relative to the second circuit board 20 can also vary within a certain range, such as the preset angle can be 80-100 degrees.

[0049] It should be noted that the charger 100 may include multiple output interfaces 33, which may output output voltages of the same magnitude, or may be designed to output output voltages of different magnitudes respectively, and the low-voltage filter capacitor C25 is arranged on the second circuit board 20 corresponding to the number of output interfaces. Among them, different circuit designs may be used to obtain the desired DC output voltage required by the output interface 33, and DC voltage reduction may be achieved by setting multiple transformers T1, or by setting multiple voltage reduction circuits 35 in the DC output circuit 31. The low-voltage filter capacitor C25 plays a filtering role on the output side voltage of the charger 100, which is consistent with the number of output interfaces 33. Since the height of the low-voltage filter capacitor C25 is usually higher than the length of the output interface 33, the low-voltage filter capacitor C25 is arranged on the second circuit board 20, and is located in the low-voltage device space, and is arranged vertically with the output interface 33. Ensure that the low-voltage filter capacitor C25 does not exceed the edge of the second circuit board 20, so that when the charger shell is assembled, it matches the size of the second circuit board 20 to reduce the volume of the charger.

[0050] See also Figure 8 and Fig. 9In other embodiments, the filter circuit components, the rectifier 14 and the high-voltage filter capacitors EC1-EC4 are arranged adjacent to each other along the width direction of the second circuit board 20, and the filter circuit components, the rectifier 14 and the transformer T1 are arranged adjacent to each other along the length direction of the second circuit board 20. The second circuit board 20 has a first end and a second end opposite to each other in its length direction, the filter circuit components and the rectifier 14 are arranged on the first circuit board 10, and the filter circuit components, the rectifier 14 and the high-voltage filter capacitors EC1-EC4 are arranged along the width direction of the second circuit board 20; the first circuit board 10 and the electronic components thereon and the high-voltage filter capacitors EC1-EC4 are arranged at the first end of the second circuit board 20 and aligned at the first end, the transformer T1 is arranged close to the second end, and the transformer T1 and the first circuit board 10, and the high-voltage filter capacitors EC1-EC4 are arranged adjacent to each other in the length direction of the second circuit board. Specifically, the output interface 33 includes a first output interface 331 and a second output interface 332; the transformer T1 includes a first transformer and a second transformer corresponding to the first output interface 331 and the second output interface 332, respectively, and the first transformer and the second transformer are arranged in parallel between the third circuit board 30 and the first circuit board 10 along the width direction of the second circuit board 20; the filter circuit device, the rectifier 14 and the high-voltage filter capacitors EC1-EC4 are arranged in a housing space aligned with the first circuit board 10, and are stacked with the transformer T1 in the length direction of the second circuit board 20. Among them, the transformer T1 is one of the main circuit components that occupies a large space in the AC-DC conversion circuit 21, and it is arranged in parallel between the third circuit board 30 and the first circuit board 10, that is, the design of the third circuit board 30 that can separate the high voltage and the low voltage is retained, and the purpose of avoiding the space required for the filter circuit device and the rectifier 14 on the first circuit board 10 is achieved, so as to make full use of the space formed by the three circuit boards together and reduce the overall size of the charger 100. It should be noted that, at this time, the design of the step-down circuit 35 can be omitted in the DC output circuit 31, and a larger high-voltage device space 37 can be formed by separating the high voltage and the low voltage through the third circuit board 30.

[0051] Optionally, the magnitude of the output voltage of the output interface 33 can also be achieved by providing a corresponding plurality of step-down circuits 35 in the DC output circuit 31. Figure 6Taking the first output interface 331 and the second output interface 332 as examples, the DC output circuit 31 also includes two step-down circuits 35 corresponding to the first output interface 331 and the second output interface 332, respectively. Each step-down circuit 35 includes a step-down inductor 351 disposed adjacent to the second high-voltage component. The step-down circuit 35 is connected to the low-voltage filter circuit 32, and the step-down inductor 351 is disposed in the high-voltage component space 37. The output of the transformer T1 is stepped down by the two step-down circuits 35, and the two step-down circuits 35 can correspond to the output voltages of different magnitudes of the first output interface 331 and the second output interface 332, respectively, so that the charger 100 can adapt to charging electronic devices with different voltages. Optionally, a partition 352 is provided on the side of the step-down inductor 351 away from the third circuit board 30. Specifically, the step-down inductor 351 is arranged adjacent to the transformer T1 in the high-voltage device space 37. A partition 352 is provided between the step-down inductor 351 and the transformer T1. The partition 352 can be a thin plate made of insulating material. With the provision of the insulating partition 352, the distance between the transformer T1 and the partition 352, and the distance between the step-down inductor 351 and the partition 352 can be reconsidered, so as to meet the safety distance conditions while reducing the required size.

[0052] In some embodiments, the charger 100 includes a housing 50, a first circuit board 10, a second circuit board 20, and a third circuit board 30 are all received in the housing 50, the second circuit board 20 is arranged relatively parallel to the largest outer side of the housing 50, and the first circuit board 10 and the third circuit board 30 are respectively arranged relatively parallel to two adjacent sides of the housing 50 that are perpendicular to the largest outer side. Figure 1 and Figure 2 Taking the orientation of the charger 100 shown in the figure as an example, the length and width of the second circuit board 20 correspond to the length and width of the charger 100 respectively, the length of the third circuit board 30 corresponds to the width of the charger 100, the first circuit board 10 and the third circuit board 30 are both perpendicular to the second circuit board 20, and the length of the first circuit board 10 and the width of the third circuit board 30 are equal, and both correspond to the height of the charger 100. In this way, the overall size of the charger 100 can be determined by the length and width of the second circuit board 20 and the width of the third circuit board 30.

[0053] Optionally, the space within the whole body defined by the first circuit board 10, the second circuit board 20 and the third circuit board 30 is filled by the whole machine glue filling process. Specifically, the outer contour of the sealing colloid 40 formed by the whole machine glue filling process can be consistent with the inner surface of the housing 50, and is filled in the space within the whole body after the first circuit board 10, the second circuit board 20 and the third circuit board 30 are assembled, that is, in the gap between each circuit component, which can improve the assembly stability, so that a higher power density is obtained in a smaller space, and the heat dissipation efficiency is improved.

[0054] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A charger, characterized in that: include: A first circuit board is provided with an AC input circuit, wherein the AC input circuit includes a first high-voltage component assembly; A second circuit board is provided with an AC-DC conversion circuit, wherein the AC-DC conversion circuit includes a second high-voltage component assembly; A third circuit board is provided with a DC output circuit, wherein the DC output circuit includes an output interface; The first circuit board and the third circuit board are both arranged at a preset angle relative to the second circuit board, and the first high-voltage component assembly is arranged adjacent to the second high-voltage component assembly, and the output interface is arranged on a side of the third circuit board away from the second high-voltage component assembly.

2. The charger according to claim 1, characterized in that: The first high-voltage component assembly includes a filter circuit device and a rectifier; the second high-voltage component assembly includes a high-voltage filter capacitor and a transformer; the filter circuit device and the rectifier are respectively arranged adjacent to the high-voltage filter capacitor and / or the transformer.

3. The charger according to claim 2, characterized in that: The filter circuit component, the rectifier and the high-voltage filter capacitor are arranged adjacent to each other along the length direction of the second circuit board, and the filter circuit component, the rectifier and the transformer are arranged adjacent to each other along the width direction of the second circuit board; Alternatively, the filter circuit device, the rectifier and the high-voltage filter capacitor are arranged adjacent to each other along the width direction of the second circuit board, and the filter circuit device, the rectifier and the transformer are arranged adjacent to each other along the length direction of the second circuit board.

4. The charger according to claim 3, characterized in that: The second circuit board has a first end and a second end opposite to each other in its length direction, and the filter circuit device, the rectifier and the transformer are arranged along the width direction of the second circuit board; the first circuit board and the transformer are arranged at the first end, and the high-voltage filter capacitor is arranged close to the second end; and the high-voltage filter capacitor is arranged adjacent to the first circuit board in the length direction of the second circuit board, and the high-voltage filter capacitor is arranged adjacent to the transformer in the width direction of the second circuit board.

5. The charger according to claim 3, characterized in that: The second circuit board has a first end and a second end opposite to each other in its length direction, and the filter circuit device, the rectifier and the high-voltage filter capacitor are arranged along the width direction of the second circuit board; the first circuit board and the high-voltage filter capacitor are arranged at the first end, the transformer is arranged close to the second end, and the transformer and the first circuit board, the high-voltage filter capacitor and the second circuit board are arranged adjacent to each other in the length direction.

6. The charger according to claim 1, characterized in that: The third circuit board divides the space on one side of the second circuit board into a high-voltage device space and a low-voltage device space; The first high-voltage component assembly and the second high-voltage component assembly are arranged in the high-voltage device space, the DC output circuit also includes a low-voltage filter circuit, the low-voltage filter circuit includes a low-voltage filter capacitor, and the low-voltage filter capacitor and the output interface are arranged in the low-voltage device space.

7. The charger according to claim 6, characterized in that: There are multiple output interfaces, the number of the low-voltage filter capacitors is consistent with the number of the output interfaces, and / or the low-voltage filter capacitors are arranged on the second circuit board.

8. The charger according to claim 6, characterized in that: The DC output circuit also includes a step-down circuit corresponding to the output interface, the step-down circuit is connected to the low-voltage filter circuit, the step-down circuit includes a step-down inductor device arranged in the high-voltage device space, and the step-down inductor device is arranged on the third circuit board.

9. The charger according to claim 8, characterized in that: The step-down inductor is provided with a partition at a side away from the third circuit board.

10. The charger according to claim 1, characterized in that: The third circuit board is located near one end of the second circuit board and is parallel to the width direction of the second circuit board. The end of the output interface away from the third circuit board is flush with the end surface of the second circuit board.

11. The charger according to claim 1, characterized in that: The first circuit board and the third circuit board are both perpendicular to the second circuit board.

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