Charger

Abstract

The utility model provides a charger, which comprises a shell, the shell comprises a base and a shell cover, the shell cover and the base jointly form a storage space, and a mounting structure is arranged on one side, facing the storage space, of the base. The charging circuit board comprises a circuit substrate and a charging circuit arranged on the circuit substrate, the circuit substrate is installed in the containing space through the installation structure, the containing space is divided into a first space and a second space, and the second space is larger than the first space.

Description

Technical Field

[0001] The present application relates to the technical field of charging, and in particular, to a charger. Background Art

[0002] A charger is a commonly used household device in people's daily lives, and many electronic products such as mobile phones, computers, and wearable electronic devices will use a charger.

[0003] Currently, chargers with small volume and high power density have become a development trend. In the conventional charger design, the high-voltage circuit layout and the low-voltage circuit layout in the charger are usually designed on different circuit boards. The circuit boards are divided into two or more pieces, and a combination of multiple circuit boards is used to achieve a three-dimensional layout, so that the internal structure of the charger is more compact. However, such a circuit board design increases the assembly complexity, and it is difficult to ensure the stability of the overall structure. In fact, the optimal space utilization rate inside the charger cannot be achieved. Utility Model Content

[0004] To solve the existing technical problems, the present application provides a charger with simple assembly, higher structural stability, and optimized space utilization rate inside the charger.

[0005] The present application provides a charger, including:

[0006] A housing, including a base and a shell cover. The shell cover and the base together form a storage space. An installation structure is provided on one side of the base facing the storage space.

[0007] A charging circuit board, including a circuit substrate and a charging circuit provided on the circuit substrate. The circuit substrate is installed in the storage space through the installation structure, dividing the storage space into a first space and a second space, and the second space is larger than the first space.

[0008] Optionally, the charging circuit includes a main control chip provided on the first surface of the circuit substrate and located in the first space, and a transformer provided on the second surface of the circuit substrate and located in the second space.

[0009] Optionally, the transformer is spaced from the second surface of the circuit substrate, and a stacked installation space is formed between the transformer and the second surface.

[0010] Optionally, the charging circuit includes an output interface. The output interface is provided in the stacked installation space, and the interface connection side protrudes from the edge of the circuit substrate. A charging port corresponding to the output interface is provided on the housing.

[0011] Optionally, the charging circuit further includes a protocol chip connected to the output interface, and the protocol chip is disposed at a position on the first surface of the circuit substrate corresponding to the output interface and located within the first space.

[0012] Optionally, the charging circuit also includes a filter circuit device connected to the primary side of the transformer; the filter circuit device includes a plurality of filter capacitors arranged on the second surface of the circuit substrate and located in the second space, and the filter capacitors are arranged adjacent to the transformer.

[0013] Optionally, the charging circuit further includes a rectifier bridge and a chip inductor connected to the output side of the rectifier bridge; the rectifier bridge and the chip inductor are both arranged on the first surface of the circuit substrate and located in the first space.

[0014] Optionally, a pin is provided on the side of the base facing away from the storage space; the mounting structure includes a clamping portion provided on one side of the base, the clamping portion is electrically connected to the pin, and includes a clamping opening facing the storage space; a conductive portion is provided on the portion of the circuit substrate corresponding to the clamping opening, and the conductive portion is inserted into the clamping opening.

[0015] Optionally, the circuit substrate is perpendicular to the base; or, the circuit substrate is parallel to the plugging direction of the pins.

[0016] Optionally, the base includes a base body and a fixing frame fixed on the base body; an edge of the fixing frame and an inner wall surface of the base body form an insertion position, and one end of the circuit substrate is located at the insertion position.

[0017] The clamping portion includes elastic clamping arms spaced apart along corresponding sides of the base in the insertion position, and the fixing frame abuts against one side of the elastic clamping arm.

[0018] Optionally, a pivot shaft is provided on a side of the base body facing the storage space, and the pin is rotatably connected to the base body via the pivot shaft; and the elastic clamp arm is provided on an inner side of the base body.

[0019] In the above embodiments, the charging circuit board includes a circuit substrate and a charging circuit disposed on the circuit substrate. The circuit substrate is installed in the housing through a mounting structure formed on the base, and divides the storage space inside the housing into a first space and a second space. In this way, by setting the charging circuit on the same circuit substrate and directly using the circuit substrate installed on the base of the housing to divide the storage space inside the housing, the sizes of the first space and the second space can be directly determined according to the heights of the circuit components on the first surface of the circuit substrate and the heights of the circuit components on the second surface respectively. This enables the circuit components in the charging circuit to make full use of the sizes of the first space and the second space on the opposite sides of the circuit substrate for optimized deployment. By ensuring that the circuit components on the opposite sides of the circuit substrate can be respectively filled and stored in the storage space of the housing as fully as possible, the utilization rate of the internal space of the charger is improved. On the premise of realizing the design of a single circuit substrate with the entire charging circuit disposed on the same circuit substrate, the small volume of the charger can be maintained, and the design of a single circuit substrate can eliminate complex processes and reduce the assembly difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is a perspective structural view of a charger in an embodiment.

[0021] Figure 2 FIG. Figure 1 is a schematic view of another angle of the charger in FIG.

[0022] Figure 3 FIG. Figure 1 is a schematic view of the internal structure of the charger in FIG. after removing the shell cover.

[0023] Figure 4 FIG. Figure 1 is a schematic view of the internal structure of the charger in FIG. after removing the shell cover and the transformer.

[0024] Figure 5 FIG. is a schematic view of the structure of a base in an embodiment.

[0025] Figure 6 FIG. Figure 5 is a schematic view of the structure of the base body in FIG.

[0026] Figure 7 FIG. is a front view of the first surface of a charging circuit board in an embodiment.

[0027] Description of Component Symbols:

[0028] Charger 100, housing 10, base 11, base body 113, fixing bracket 114, pivot shaft 115, locking hole 116, side wall 12, cover plate 13, charging port 131, pin 14, mounting structure 15, clamping port 150, clamping part 151, storage space 16, first space 161, second space 162, charging circuit board 20, circuit substrate 21, first surface 211, second surface 212, stacked installation space 253, output interface 29;

[0029] Main control chip U2, protocol chip U5, transformer T1, filter capacitors C4, C5, rectifier bridge DB1, chip inductance L2. Specific embodiments

[0030] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0031] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the drawings. The described embodiments should not be regarded as limitations of the present application. All other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0032] In the following description, the expression "some embodiments" is used, which describes a subset of all possible embodiments. It should be noted that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0033] In the following description, the terms "first, second, third" are only used to distinguish similar objects and do not represent a specific order for the objects. It can be understood that "first, second, third" can be interchanged with a specific order or sequence when allowed, so that the embodiments of the present application described here can be implemented in an order other than that illustrated or described here.

[0034] Please refer to Figures 1 to 4 , a charger 100 provided by an embodiment of the present application. The charger 100 includes a housing 10 and a charging circuit board 20 housed in the housing 10.

[0035] The housing 10 includes a base 11 and a shell cover. The shell cover and the base 11 together form a storage space 16. An installation structure 15 is provided on one side of the base 11 facing the storage space 16. The charging circuit board 20 includes a circuit substrate 21 and a charging circuit provided on the circuit substrate 21. The circuit substrate 21 is installed in the storage space 16 through the installation structure 15, dividing the storage space 16 into a first space 161 and a second space 162, where the second space 162 is larger than the first space 161.

[0036] Among them, the shell cover includes a side wall 12 surrounding the base 11 and a cover plate 13 covering the side away from the base 11 of the side wall 12. Optionally, the cover plate 13 and the side wall 12 can be an integrally formed structure.

[0037] The circuit board 21 is installed in the storage space 16 through the installation structure 15 on the base 11, and divides the storage space 16 into a first space 161 and a second space 162. It can be seen that the overall size of the charging circuit board 20 corresponds to the internal size of the housing 10. Specifically, the length and width of the circuit board 21 correspond to the length and width of the housing 10. Thus, after the circuit board 21 is installed in the storage space 16 of the housing 10 through the installation structure 15 on the base 11, the storage space 16 can be divided into two spaces corresponding to the opposite two surfaces of the circuit board 21.

[0038] In the above embodiment, the charging circuit board 20 includes a circuit board 21 and a charging circuit provided on the circuit board 21. The circuit board 21 is installed in the housing 10 through the installation structure 15 formed on the base 11, and divides the internal storage space 16 of the housing 10 into a first space 161 and a second space 162. In this way, by setting the charging circuit on the same circuit board 21 and directly using the circuit board 21 installed on the base 11 of the housing 10 to divide the internal storage space 16 of the housing 10, the sizes of the first space 161 and the second space 162 can be directly determined according to the heights of the circuit components on the first surface 211 of the circuit board 21 and the heights of the circuit components on the second surface 212 respectively, so that the circuit components in the charging circuit can make full use of the sizes of the first space 161 and the second space 162 on the opposite sides of the circuit board 21 for optimal deployment. By ensuring that the circuit components on the opposite sides of the circuit board 21 can be respectively filled and stored in the storage space 16 of the housing 10 as fully as possible, the utilization rate of the internal space of the charger 100 is improved. On the premise of realizing the design of a single circuit board 21 with the entire charging circuit arranged on the same circuit board 21, the small volume of the charger 100 can be maintained, and the design of a single circuit board 21 can eliminate complex processes and reduce the assembly difficulty.

[0039] Optionally, a plug 14 is provided on the side of the base 11 facing away from the storage space 16. The plug 14 is provided on the base 11 of the housing 10, and the electrical connection between the plug 14 and the charging circuit board 20 can be directly designed on the base 11 by using the installation structure 15 for installing the charging circuit board 20 on the base 11 at the same time. In this way, when the charger 100 is in use, the plug 14 is used to plug and connect to the mains power to obtain an AC input power supply and provide it to the charging circuit board 20 in the housing 10, so as to obtain a charging output of a target size after conversion through the charging circuit on the charging circuit board 20 and charge the electronic device to be charged connected to the charger 100.

[0040] Optionally, the mounting structure 15 includes a clamping portion 151 provided on one side of the base 11. The clamping portion 151 is electrically connected to the pin 14 and includes a clamping opening 150 facing the receiving space 16. A conductive portion is provided at a position on the circuit board 21 corresponding to the clamping opening 150. One side of the circuit board 21 is inserted into the clamping opening 150 and mounted in the receiving space 16, and the conductive portion is inserted into the clamping opening 150. In this embodiment, the charger 100 is integrally in a three-dimensional rectangular shape, and its base 11, side wall 12, and cover plate 13 are each substantially rectangular. The circuit board 21 can be inserted into the clamping opening 150 of the clamping portion 151 in a direction perpendicular to the base 11 and mounted in the housing 10. The circuit board 21 is perpendicular to the base 11, and the conductive portion can be correspondingly provided according to the position where the circuit board 21 is inserted into the clamping opening 150. After the circuit board 21 is inserted and mounted in the receiving space 16, electrical connection with the pin 14 can be completed through the clamping portion 151.

[0041] Optionally, please refer to Figure 5 and Figure 6 , the base 11 includes a base body 113 and a fixing frame 114 fixed on the base body 113. The edge of the fixing frame 114 and the inner wall surface of the base body 113 form an insertion position, that is, the space formed between the side surface of the edge of the fixing frame 114 and the inner wall surface of the base body 113. One end of the circuit board 21 is located in the insertion position (see Figure 4 ). The clamping portion 151 includes elastic clamping arms arranged at intervals in the insertion position. The elastic clamping arms are located on the side of the base 11 (or the base body 113) facing the receiving space 16, and the fixing frame 114 abuts against one side of the elastic clamping arms to adjust the clamping force of the elastic clamping arms on the circuit board 21. After the circuit board 21 is inserted into the clamping opening 150 of the elastic clamping arms, the fixing frame 114 can be pressed in the direction of the elastic clamping arms to force the opening of the clamping opening 150 of the elastic clamping arms to decrease, and the elastic clamping arms can clamp the circuit board 21 more stably inside. The fixing frame 114 is provided with a locking hole 116, and it can be fixedly connected to the base body 113 by passing a locking member such as a screw through the locking hole 116. After the circuit board 21 is connected to the base 11 through the elastic clamping arms by insertion, the fixing frame 114 is fixedly mounted on the base body 113 to maintain the stability of the circuit board 21 mounted on the base 11. Secondly, by setting the cooperation of the fixing frame 114 and the base body 113, the clamping force formed by the fixing frame 114 and the base body 113 can be used to assist in the installation of the clamping portion 151 and electrically connect the pin 14 to the clamping portion 151, which is beneficial to reducing the surface size of the base 11 and thus reducing the volume of the charger.

[0042] Optionally, a pivot shaft 115 is provided on one side of the base body 113 facing the storage space 16. The plug pin 14 is connected to the pivot shaft 115 and is rotatably connected to the base body 113 through the pivot shaft 115. The elastic clamping arm is provided inside the base body 113 and is made of a metal material. Optionally, both the plug pin 14 and the pivot shaft 115 are also made of a metal material, and both ends of the pivot shaft 115 are electrically connected to the clamping portion 151 through metal elastic pieces during rotation. The plug pin 14 is rotatably connected to the outside of the base body 113. In the unused state of the charger 100, the plug pin 14 can be rotated to a state of being stored in the storage groove on the base 11; when the charger 100 needs to be used, the plug pin 14 can be rotated to a state perpendicular to the base 11, and AC mains power can be obtained by inserting the plug pin 14 into a socket, and the AC mains power is provided to the charging circuit board 20 as an AC input power source. The circuit board 21 is parallel to the insertion direction of the plug pin 14 in the use state. The elastic clamping arm is made of a metal material, and one side of the circuit board 21 can be clamped by the elastic clamping arm and is arranged parallel to the side wall 12. In this way, the size of the circuit board 21 is substantially equal to the size of the side wall 12 of the housing 10, so that while being compatible with the small volume of the existing charger 100, by optimizing the layout of the circuit components on the opposite two surfaces of the circuit board 21, the utilization rate of the storage space 16 inside the charger 100 can be more fully utilized to achieve the design purpose that the circuit components of the charging circuit can be integrally arranged on the single circuit board 21. In this embodiment, the elastic clamping arm is made of a metal material and is electrically connected to the plug pin 14, and metal contacts are provided at the positions of the circuit board 21 corresponding to the elastic clamping arm, so that the plug pin 14 can provide an AC input power source to the charging circuit board 20 after connecting to the mains power.

[0043] It should be noted that when the main control chip U2 and the transformer T1 are respectively arranged on the first surface 211 and the second surface 212 of the circuit board 21, when the circuit board 21 is installed in the housing 10, the first space 161 and the second space 162 are divided mainly according to the space size required for installing the main control chip U2 on the first surface 211 of the circuit board 21 and the space size required for installing the transformer T1 on the second surface 212, and other circuit components arranged on the opposite sides of the circuit board 21 are optimized and deployed accordingly to ensure that the circuit components on the opposite sides of the circuit board 21 can be respectively filled and stored in the storage space 16 of the housing 10 as fully as possible, thereby improving the utilization rate of the internal space of the charger 100. Optionally, the space size required for installing the transformer T1 on the second surface 212 can be further optimized.

[0044] In some embodiments, the charging circuit includes a main control chip U2 disposed on the first surface 211 of the circuit board 21 and located within the first space 161, and a transformer T1 disposed on the second surface 212 of the circuit board 21 and located within the second space 162. The transformer T1 is spaced from the second surface 212 of the circuit board 21 to form a superimposed installation space 253 between the transformer T1 and the second surface 212. Among them, the overhead design of the transformer T1 relative to the second surface 212 of the circuit board 21 forms a superimposed installation space 253 between the transformer T1 and the circuit board 21, which is equivalent to being able to reuse the surface area of the circuit board 21 corresponding to the area of the superimposed installation space 253 for the assembly of circuit devices in the charging circuit, thereby further facilitating the maintenance of a small volume of the charging module adapted to the charger 100 while ensuring powerful performance under the premise of the basic design of a single circuit board.

[0045] Optionally, the charging circuit includes an output interface 29. The output interface 29 is disposed within the superimposed installation space 253 and the interface connection side protrudes from the edge of the circuit board 21. A charging port corresponding to the output interface 29 is provided on the housing 10. The charging port is provided at one end of the housing 10 away from the base 11. The output interface 29 is disposed within the superimposed installation space 253 between the transformer T1 and the circuit board 21, which can utilize the output interface 29 to provide a supporting force for the overhead setting of the transformer T1 and also makes full use of the superimposed installation space 253 to solve the setting of the output interface 29, which can further improve the utilization rate of the second space 162. In an optional example, the output interface 29 is a type-c interface.

[0046] Please refer to Figure 7, Optionally, the charging circuit further includes a protocol chip U5 connected to the output interface 29. The protocol chip U5 is disposed at a position corresponding to the output interface 29 on the first surface 211 of the circuit board 21 and is located within the first space 161. The protocol chip U5 and the output interface 29 are respectively located on the first surface 211 and the second surface 212 of the circuit board 21, and the positions of the protocol chip U5 and the output interface 29 correspond to each other. In this way, the utilization rate of the second space 162 is utilized to complete the setting of the protocol chip U5, and the electrical connection between the protocol chip U5 and the output interface 29 can be realized by means of plug-in soldering. Among them, the protocol chip U5 has the ability to detect devices and identify cables. By the feedback of detection signals, it can judge the insertion state of the electronic device to be charged and whether the charging cable is normally connected, and can automatically adjust the magnitude of the charging output voltage and current according to the needs of the electronic device to be charged, ensuring the safety and stability of charging. If an abnormal situation occurs in the electronic device to be charged or the cable, the protocol chip U5 will take protection measures in time to prevent the device from being damaged. In this embodiment, the protocol chip U5 can determine the charging protocol adapted to the corresponding connected electronic device to be charged according to the charging type supported by the electronic device to be charged currently connected to the output interface 29. The charging circuit board 20 outputs a DC output voltage of a target magnitude through the output interface 29 according to the adapted charging protocol to charge the electronic device to be charged.

[0047] Optionally, the charging circuit further includes a filter circuit device connected to the primary side of the transformer T1. The filter circuit device includes a plurality of filter capacitors C4, C5 disposed on the second surface 212 of the circuit board 21 and located within the second space 162. The filter capacitors C4, C5 are disposed adjacent to the transformer T1. The filter capacitors C4, C5, as high-voltage components with relatively large volumes in the charging circuit, are disposed on the side of the transformer T1 adjacent to the plug 14 of the charger 100. The height of the filter capacitors C4, C5 is approximately equal to the dimension of the second space 162 in the direction perpendicular to the circuit board 21, so as to make full use of the internal space of the second space 162 and the surface area available for circuit component assembly on the second surface 212 of the circuit board 21, which is beneficial to realizing the basic design of a single circuit board 21 and maintaining a small volume of the charging circuit board 20 that is more suitable for the charger while ensuring strong performance.

[0048] Optionally, the charging circuit further includes a rectifier bridge DB1 and a chip inductance L2 connected to the output side of the rectifier bridge DB; both the rectifier bridge DB1 and the chip inductance L2 are disposed on the first surface 211 of the circuit board 21 and are located within the first space 161. The rectifier bridge DB1 is composed of four rectifier diodes, and the rectifier diodes are connected and encapsulated together in the form of a bridge full-wave rectifier circuit. Among them, the rectifier bridge DB1, as a high-voltage component with a relatively large volume in the charging circuit, rectifies the voltage and current waveforms of the alternating current into a unidirectional direct current, so as to be applicable to the electronic device to be charged that requires a DC power supply. The chip inductance L2 is electrically connected to the output side of the rectifier bridge DB1, which can improve the electromagnetic compatibility of the circuit. In an optional specific example, the chip inductance L2 is 2.2 μH. The setting of the chip inductance L2 can play a role in filtering and suppressing conductive interference, and thus replace the common-mode inductance disposed between the output side of the rectifier bridge DB1 and the primary side of the transformer T1. In the implementation solution where the common-mode inductance is cancelled, the required assembly space of the chip inductance L2 on the circuit board 21 can be greatly reduced compared with the common-mode inductance, so that it can solve the problems of large assembly space occupied and easy inductance failure caused by the setting of the common-mode inductance in the existing charger, and can better solve the electromagnetic interference problem. In this embodiment, the rectifier bridge DB1, the chip inductance L2 and the main control chip U2 are jointly disposed on the first surface 211 of the circuit board 21 and are received in the first space 161 formed by dividing the circuit board 21, so that the assembly of the circuit components on the circuit board 21 can be more compact, and the surface area required for assembling all the circuit components in the charging circuit on a single circuit board 21 can be minimized as much as possible.

[0049] The charger 100 provided by the embodiment of the present application has at least the following characteristics:

[0050] First, the charging circuit is integrally disposed on a single circuit board 21, and the circuit board 21 is directly mounted on the base 11 of the housing 10 to divide the storage space 16 inside the housing 10. By ensuring that the circuit components on the opposite sides of the circuit board 21 can be respectively filled and received in the storage space 16 of the housing 10 as fully as possible, the utilization rate of the internal space of the charger 100 is improved. On the premise of realizing the design of the single circuit board 21 with the charging circuit integrally disposed on the same circuit board 21, the small volume of the charger 100 can be maintained.

[0051] Second, the transformer T1 is elevated relative to the circuit board 21, so as to form a superimposed installation space 253 for arranging other circuit components between the transformer T1 and the circuit board 21. In this way, within the area on the circuit board 21 for assembling the transformer T1, the circuit components can be arranged in a superimposed manner, which is further conducive to reducing the surface area required for assembling all the circuit components in the charging circuit. When ensuring that the size of a single circuit board 21 can be compatible with the size of the existing charger 100, the assembly of all the circuit components in the charging circuit can be completed.

[0052] Third, a chip inductor L2 is added to the output side of the rectifier bridge DB1. The chip inductor L2 requires a small assembly space and can replace the common-mode inductor arranged on the primary side of the transformer T1 in the charging circuit. That is, it can solve the problems brought by the common-mode inductor, such as the need to occupy a large assembly space and the easy occurrence of inductor failure, and can better solve the electromagnetic interference problem.

[0053] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present application can easily think of changes or substitutions, which should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A charger, characterized in that, include: The housing comprises a base and a cover, wherein the cover and the base together form a storage space, and a mounting structure is provided on a side of the base facing the storage space; The charging circuit board includes a circuit substrate and a charging circuit arranged on the circuit substrate. The circuit substrate is installed in the storage space through the mounting structure, dividing the storage space into a first space and a second space, and the second space is larger than the first space.

2. The charger according to claim 1, wherein, The charging circuit includes a main control chip disposed on a first surface of the circuit substrate and located in the first space, and a transformer disposed on a second surface of the circuit substrate and located in the second space.

3. The charger according to claim 2, characterized in that, The transformer is spaced apart from the second surface of the circuit substrate to form a superimposed installation space between the transformer and the second surface.

4. The charger according to claim 3, characterized in that, The charging circuit includes an output interface, which is arranged in the stacking installation space and the interface connection side protrudes out of the edge of the circuit substrate. The housing is provided with a charging port corresponding to the output interface.

5. The charger according to claim 4, wherein The charging circuit further includes a protocol chip connected to the output interface. The protocol chip is disposed on the first surface of the circuit substrate at a position corresponding to the output interface and is located in the first space.

6. The charger according to claim 2, characterized in that, The charging circuit further includes a filter circuit device connected to the primary side of the transformer; The filter circuit device includes a plurality of filter capacitors disposed on the second surface of the circuit substrate and located in the second space. The filter capacitors are disposed adjacent to the transformer.

7. The charger according to claim 2, characterized in that, The charging circuit further includes a rectifier bridge and a chip inductor connected to the output side of the rectifier bridge; The rectifier bridge and the chip inductor are both arranged on the first surface of the circuit substrate and located in the first space.

8. The charger according to claim 1, wherein, A pin is provided on a side of the base facing away from the storage space; The mounting structure includes a clamping portion provided on one side of the base, the clamping portion being electrically connected to the pin and including a clamping opening facing the receiving space; A conductive portion is provided on the circuit substrate at a position corresponding to the clamping opening, and the conductive portion is inserted into the clamping opening.

9. The charger according to claim 8, characterized in that, The circuit substrate is perpendicular to the base; Alternatively, the circuit substrate is parallel to the plugging direction of the pins.

10. The charger according to claim 8, characterized in that, The base includes a base body and a fixing frame fixed on the base body; an edge of the fixing frame and an inner wall surface of the base body form an insertion position, and one end of the circuit substrate is located at the insertion position.

11. The charger according to claim 10, characterized in that, The clamping portion includes elastic clamping arms spaced apart in the insertion position, and the fixing frame abuts against one side of the elastic clamping arm.

12. The charger according to claim 11, characterized in that, A pivot shaft is provided on one side of the base body facing the storage space, and the pin is rotatably connected to the base body via the pivot shaft; The elastic clamping arm is arranged on the inner side of the base body.

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