CN220711162U

CN220711162U - Contact pin structure charger

Info

Publication number: CN220711162U
Application number: CN202322261706.0U
Authority: CN
Inventors: 陈志鹏; 陈满; 吴晓凯; 朱高昌
Original assignee: Xiamen Innov Charge Source Electronics Co ltd
Current assignee: Xiamen Innov Charge Source Electronics Co ltd
Priority date: 2023-08-22
Filing date: 2023-08-22
Publication date: 2024-04-02
Anticipated expiration: 2033-08-22

Abstract

The utility model discloses a contact pin structure charger, which comprises a shell and a circuit board arranged in the shell, wherein the circuit board comprises a contact pin structure, a rectifying and filtering circuit, a transformer, an integrated PWM circuit and an output circuit; the upper injection molding of the shell is fixedly provided with a contact pin, the contact pin structure comprises a spring plate structure arranged on the circuit board, and the contact pin is electrically connected with the spring plate structure; the rectifying and filtering circuit comprises a rectifying bridge stack, an electrolytic capacitor and a filter which are connected through circuit board wiring; the integrated PWM circuit comprises a PWM control unit KP201E. Compared with the prior art, the method has the advantages that: this novel and traditional wire welded structure charger can reduce assembly cost, reduces production process, improves production efficiency.

Description

Contact pin structure charger

Technical Field

The utility model relates to the technical field of chargers, in particular to a contact pin structure charger.

Background

At present, the switch power supply is widely applied to different occasions, and along with the wide application of the charger, the market has wider requirements on the charger, the charger is required to have lower cost, and the appearance is more attractive. The existing charger with the traditional wire welding structure has the problems of complex assembly process and high cost.

Disclosure of Invention

The utility model aims to solve the technical problems and provide a contact pin structure charger capable of reducing the assembly cost.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows:

the pin structure charger comprises a shell and a circuit board arranged in the shell, wherein the circuit board comprises a pin structure, a rectifying and filtering circuit, a transformer, an integrated PWM circuit and an output circuit;

the upper injection molding of the shell is fixedly provided with a contact pin, the contact pin structure comprises a spring plate structure arranged on the circuit board, and the contact pin is electrically connected with the spring plate structure;

the rectifying and filtering circuit comprises a rectifying bridge stack, an electrolytic capacitor and a filter which are connected through circuit board wiring;

the integrated PWM circuit comprises a PWM control unit KP201E.

As an improvement, the type of the rectifier bridge stack on the rectifier filter circuit is USB8, and two electrolytic capacitors are arranged, and the rectifier bridge stack, the electrolytic capacitors and the filter form a pi-type filter circuit.

As an improvement, the transformer comprises a transformer conversion unit, wherein the transformer conversion unit adopts an EE1610 skeleton, and a magnetic core is arranged inside the transformer. Can meet the power requirement of 24W and below.

As an improvement, the KP201E chip adopts an SOT23-6L package. The KP201E chip is a constant voltage and constant current product, integrates a universal primary side constant current control technology, can support the work of an intermittent mode and a continuous mode, is suitable for the isolated power supply application of constant voltage and constant current output, adopts a green energy-saving mode and a hiccup mode to work, integrates various protection functions of a self-recovery mode,

as an improvement, the output circuit consists of a synchronous rectifier and an electrolytic capacitor. And by the application of synchronous rectification, the efficiency of the product is improved, the electrolytic capacitor enables the product to have lower ripple waves, and the requirements of electronic equipment are met.

Compared with the prior art, the utility model has the advantages that: this novel for reducing assembly cost, reduce production process, improve production efficiency, carry out optimal design with typical 12V 2A's charger, adopt the mode that is connected with the shell fragment structure of installing on contact pin and the circuit board, install between contact pin and the circuit board, can effectively reduce assembly process compared with traditional installation method, reduce assembly cost, and adopt the primary side constant current technology of the accurate resonance primary side controller of KP201E chip integrated ultra-low standby power consumption and support intermittent mode, continuous mode.

Drawings

Fig. 1 is a schematic diagram of a pin structure charger according to the present utility model.

Fig. 2 is a schematic diagram of a housing of a pin structure charger according to the present utility model.

Fig. 3 is a schematic circuit diagram of a charger with a pin structure according to the present utility model.

As shown in the figure: 1. a housing; 2. a pin structure; 3. a rectifying and filtering circuit; 4. a transformer; 5. an integrated PWM circuit; 6. an output circuit; 7. and (5) inserting pins.

Detailed Description

In the description of the present utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more. In addition, the term "include" and any variations thereof are intended to cover a non-exclusive inclusion.

The present utility model will be described in further detail with reference to the accompanying drawings.

Pin structure charger:

the integrated PWM circuit comprises a shell 1 and a circuit board arranged inside the shell 1, wherein the circuit board comprises a pin structure 2, a rectifying and filtering circuit 3, a transformer 4, an integrated PWM circuit 5 and an output circuit 6.

The upper injection molding of the shell 1 is fixedly provided with a contact pin 7, the contact pin structure 2 comprises a spring plate structure arranged on a circuit board, and the contact pin 7 is electrically connected with the spring plate structure. It should be noted that, the traditional operation method is that the American standard shell is welded with the pins of the American standard shell and the circuit board through the UL1007 lead, and the purposes of reducing the procedures and the assembly cost can be achieved by changing the installation mode of the pin 7 and the circuit board.

The rectifying and filtering circuit 3 comprises a rectifying bridge stack, an electrolytic capacitor and a filter which are connected through circuit board wiring. Specifically, the type of the rectifier bridge stack on the rectifier filter circuit 3 is USB8, and two electrolytic capacitors are arranged, and the rectifier bridge stack, the electrolytic capacitors and the filter form a pi-type filter circuit.

The integrated PWM circuit 5 includes a PWM control unit KP201E. Specifically, the KP201E chip is packaged by SOT 23-6L. The KP201E chip is a constant voltage and constant current product, is integrated with a universal primary side constant current control technology, can support intermittent mode and continuous mode operation, and is suitable for constant current output isolated power supply application. The environment-friendly energy-saving mode and the hiccup mode are adopted to work, and various protection functions of the self-recovery mode are integrated.

Specifically, the transformer 4 includes a transformer conversion unit, the transformer conversion unit adopts an EE1610 skeleton, and a magnetic core is disposed inside the transformer 4.

Specifically, the output circuit 6 is composed of a synchronous rectifier and an electrolytic capacitor.

The utility model is implemented in particular:

the contact pin 7 is directly moulded plastics at shell 1 to with shell fragment structure electric connection in the contact pin structure 2, can reduce the equipment process, reduce assembly cost, just this novel through adopting KP201E chip, KP201E chip integration has general former limit constant current control technique, can support intermittent mode and continuous mode work, is applicable to in the isolated power application of constant voltage constant current output, can improve this novel performance.

The utility model and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the utility model as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present utility model.

Claims

1. The utility model provides a contact pin structure charger, includes shell (1) and installs in the inside circuit board of shell (1), its characterized in that: the circuit board comprises a pin structure (2), a rectifying and filtering circuit (3), a transformer (4), an integrated PWM circuit (5) and an output circuit (6);

the upper part of the shell (1) is fixedly provided with a contact pin (7) in an injection molding way, the contact pin structure (2) comprises a spring plate structure arranged on a circuit board, and the contact pin (7) is electrically connected with the spring plate structure;

the rectifying and filtering circuit (3) comprises a rectifying bridge stack, an electrolytic capacitor and a filter which are connected through circuit board wiring;

the integrated PWM circuit (5) comprises a PWM control unit KP201E.

2. A pin configuration charger according to claim 1, wherein: the type of the rectifier bridge stack on the rectifier filter circuit (3) is USB8, and two electrolytic capacitors are arranged, and the rectifier bridge stack, the electrolytic capacitors and the filter form a pi-type filter circuit.

3. A pin configuration charger according to claim 1, wherein: the transformer (4) comprises a transformer conversion unit, wherein the transformer conversion unit adopts an EE1610 framework, and a magnetic core is arranged in the transformer (4).

4. A pin configuration charger according to claim 1, wherein: and the KP201E chip is packaged by SOT 23-6L.

5. A pin configuration charger according to claim 1, wherein: the output circuit (6) consists of a synchronous rectifier and an electrolytic capacitor.