CN215186412U - Switching power supply with good heat dissipation performance - Google Patents

Abstract

The utility model relates to a good switching power supply of thermal diffusivity, including transformer, relay, circuit breaker, overhead guide rail terminal subassembly, power sensor, switch board, lower guide rail terminal subassembly, box and radiator. The box body comprises a box base body, an upper box cover and a lower box cover. The upper box cover and the lower box cover are buckled on the box base body and are sequentially arranged along the direction from top to bottom. The radiator is installed and fixed on the rear side wall of the box base body and is in opposite position with the transformer. In the actual operation process of the switching power supply, heat emitted by the transformer, the relay, the circuit breaker, the power sensor and the power switch board can be conducted to the radiator through the rear side wall of the box body in time and then emitted to the external environment. Therefore, the temperature in the inner cavity of the box body is effectively controlled to be always kept within a reasonable value range.

Description

Switching power supply with good heat dissipation performance

Technical Field

The utility model belongs to the technical field of switching power supply manufacturing technology and specifically relates to a switching power supply that thermal diffusivity is good.

Background

The switch power supply is a power supply which utilizes the modern power electronic technology to control the on-off time ratio of a switch tube and maintain stable output voltage. The switching power supply is generally composed of a Pulse Width Modulation (PWM) control IC and a MOSFET. With the development and innovation of power electronic technology, the technology of the switching power supply is continuously innovated. At present, the switching power supply is widely applied to almost all electronic devices with the characteristics of small size, light weight and high efficiency, and is an indispensable power supply mode for the rapid development of the electronic information industry at present.

The switch power supply comprises a box body, a transformer, a relay, a circuit breaker, an upper guide rail terminal assembly, a power sensor, a power switch board and a lower guide rail terminal assembly. In the actual working and running process of the switching power supply, a transformer, a relay, a circuit breaker, a power sensor and a power switch board all emit a large amount of heat, particularly the transformer. In the prior art, the switching power supply is not provided with a heat dissipation device, or only a series of heat dissipation seams are arranged on the box body, so that heat cannot be dissipated timely. Therefore, as the working time of the switching power supply is prolonged, the temperature in the box body can be gradually increased, so that the normal performance of the working performance of the transformer, the relay, the circuit breaker, the upper guide rail terminal assembly, the power sensor, the power switch board and the lower guide rail terminal assembly can be influenced, and even the switching power supply can be burnt in serious cases. Thus, a skilled person is urgently needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Therefore, in view of the above-mentioned problems and drawbacks, the present invention provides a switching power supply with good heat dissipation performance, which is obtained by collecting relevant information, evaluating and considering in multiple ways, and continuously performing experiments and modifications by a plurality of years of research and development experience technicians engaged in the industry.

In order to solve the technical problem, the utility model relates to a good switching power supply of thermal diffusivity, including transformer, relay, circuit breaker, overhead guide rail terminal subassembly, power sensor, switch board, lower guide rail terminal subassembly and box. The transformer, the relay, the circuit breaker, the upper guide rail terminal assembly, the power sensor, the power switch board and the lower guide rail terminal assembly are all arranged in the box body and are electrically connected with each other. The box body comprises a box base body, an upper box cover and a lower box cover. The upper box cover and the lower box cover are buckled on the box base body and are sequentially arranged along the direction from top to bottom. In addition, the switching power supply with good heat dissipation also comprises a radiator. The radiator is installed and fixed on the rear side wall of the box base body and is in opposite position with the transformer.

As the further improvement of the technical proposal of the utility model, the radiator comprises a radiating substrate and radiating fins. The number of the radiating fins is set to be a plurality, the radiating fins are all fixed on the rear side wall of the radiating substrate and are arranged side by side along the width direction of the radiating substrate.

As the utility model discloses technical scheme's further improvement, the heat dissipation base plate is preferred to be formed by the cutting of copper plate, and thickness value t1 is not less than 8 mm. The radiating fins are preferably cast aluminum, and the thickness value t2 is controlled to be between 1 and 2 mm. The spacing d between the radiating fins is controlled to be 5-10 mm.

As a further improvement of the technical scheme of the utility model, just corresponding to the mounted position of heat dissipation base plate, seted up the heat dissipation breach on the back lateral wall of case base member.

As the technical scheme of the utility model the further improvement, the good switching power supply of thermal diffusivity still includes the sealing strip. And an annular groove is formed by extending the front side wall of the heat dissipation substrate backwards. The sealing strip is elastically pressed between the heat dissipation substrate and the box substrate and embedded in the annular groove.

Compare in the switching power supply of traditional project organization the utility model discloses an among the technical scheme, it has additionally been equipped with the radiator. In the actual operation process of the switching power supply, heat emitted by the transformer, the relay, the circuit breaker, the power sensor and the power switch board can be conducted to the radiator through the rear side wall of the box body in time and then emitted to the external environment. Therefore, the temperature in the inner cavity of the box body is effectively controlled to be always maintained in a reasonable value range, and the normal performance of the working performance of the switching power supply during long-time operation is further ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view of a switching power supply with good heat dissipation of the present invention.

Fig. 2 is a front view of fig. 1 (with the top case cover and the bottom case cover removed).

Fig. 3 is an explosion diagram of a perspective of the switching power supply with good heat dissipation performance of the present invention.

Fig. 4 is a perspective view of another perspective view of the switching power supply with good heat dissipation performance according to the present invention.

Fig. 5 is a front view of fig. 4.

Fig. 6 is a sectional view a-a of fig. 5.

Fig. 7 is a perspective view of a heat sink in the switching power supply with good heat dissipation performance according to the present invention.

Fig. 8 is a front view of fig. 7.

Fig. 9 is a perspective view of another view angle of the heat sink in the switching power supply with good heat dissipation performance according to the present invention.

Fig. 10 is a schematic perspective view of a case of the switching power supply of the present invention having good heat dissipation.

1-a transformer; 2-a relay; 3-a circuit breaker; 4-upper guide rail terminal component; 5-a power sensor; 6-power switch board; 7-lower guide rail terminal component; 8-a box body; 81-box base; 811-heat dissipation notches; 82-arranging a box cover; 83-lower box cover; 9-a radiator; 91-a heat dissipation substrate; 911-annular groove; 92-heat dissipating fins; 10-sealing strip.

Detailed Description

In the description of the present invention, it is to be understood that the terms "left", "right", "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In order to facilitate the technical solutions disclosed in the present invention to be fully understood by those skilled in the art, the following detailed description is made in conjunction with specific embodiments, and as shown in fig. 1, 2, 3, and 4, the switching power supply with good heat dissipation performance mainly includes a transformer 1, a relay 2, a circuit breaker 3, an upper rail terminal assembly 4, a power sensor 5, a power switch board 6, a lower rail terminal assembly 7, a box 8, and a heat sink 9. The transformer 1, the relay 2, the circuit breaker 3, the upper rail terminal assembly 4, the power sensor 5, the power switch board 6, and the lower rail terminal assembly 7 are all disposed in the case 8 and electrically connected to each other. The case 8 includes a case base 81, an upper case cover 82, and a lower case cover 83. The upper case cover 82 and the lower case cover 83 are fastened to the case base 81 and arranged in sequence from top to bottom. The heat sink 9 is mounted and fixed on the rear side wall of the case base 81, and is aligned with the transformer 1.

During the actual operation of the switching power supply, the heat dissipated by the transformer 1, the relay 2, the circuit breaker 3, the power sensor 5 and the power switch board 6 can be indirectly conducted to the heat sink 9 through the rear side wall of the case base 81 in time and then dissipated to the external environment. Therefore, the temperature in the inner cavity of the box body 8 is effectively controlled to be always kept within a reasonable value range, and the normal performance of the working performance of the switching power supply during long-time operation is further ensured.

As shown in fig. 7, the heat sink 9 preferably includes a heat-dissipating substrate 91 and heat-dissipating fins 92. The heat dissipation fins 92 are provided in plural numbers, are fixed to the rear side wall of the heat dissipation substrate 91, and are arranged side by side along the width direction of the heat dissipation substrate 91. During actual operation of the switching power supply, heat is first conducted to the heat dissipation substrate 91 through the rear side wall of the case base 81. The heat dissipation fins 92 can quickly dissipate the heat on the heat dissipation substrate 91 to the external environment, thereby effectively improving the cooling effect of the heat sink 9.

It is known that the material, thickness and specific layout of the heat dissipation substrate 91 and the heat dissipation fins 92 all have a significant influence on the cooling effect of the heat sink, and therefore, as a further optimization of the switching power supply structure with good heat dissipation performance, the heat dissipation substrate 91 is preferably cut from a copper plate, and the thickness value t1 is not less than 8 mm. The radiator fins 92 are preferably cast aluminum and have a thickness t2 controlled to be between 1 and 2 mm. The pitch d between the radiator fins 92 is controlled to be 5-10mm (as shown in fig. 8).

In addition, in order to further increase the conduction speed of the heat in the box body 8 toward the heat dissipation substrate 91, a heat dissipation notch 811 (as shown in fig. 10) may be further opened on the rear side wall of the box base 81 just corresponding to the mounting position of the heat dissipation substrate 91. Therefore, the heat transfer mode is converted from the heat conduction mode to the heat radiation mode, thereby greatly improving the dissipation speed of the heat in the box body 8.

Finally, it should be noted that, due to the existence of the heat dissipation notch 811, some moisture inevitably enters the inner cavity of the box 8 through the heat dissipation notch, and further affects the normal performance of the operation performance of the transformer 1, the relay 2, the circuit breaker 3, the upper track terminal assembly 4, the power sensor 5, the power switch board 6, and the lower track terminal assembly 7, and therefore, as shown in fig. 5 and 6, a sealing strip 10 is further added to the switching power supply with good heat dissipation performance according to different practical application scenarios. An annular groove 911 (shown in fig. 9) extends rearward from the front side wall of the heat dissipating substrate 91 at a set distance from the peripheral side wall of the heat dissipating substrate 91. The weather strip 10 is elastically pressed between the heat dissipating base plate 91 and the case base 81, and is embedded in the annular groove 911. Therefore, the inner cavity of the box body 8 can be effectively ensured to be always kept in a sealed state, so as to avoid the invasion of water vapor.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (2)

1. A switch power supply with good heat dissipation performance comprises a transformer, a relay, a circuit breaker, an upper guide rail terminal assembly, a power sensor, a power switch board, a lower guide rail terminal assembly and a box body; the transformer, the relay, the circuit breaker, the upper guide rail terminal assembly, the power sensor, the power switch board and the lower guide rail terminal assembly are all arranged in the box body and are electrically connected with each other; the box body comprises a box base body, an upper box cover and a lower box cover; the upper box cover and the lower box cover are buckled on the box base body and are sequentially arranged along the direction from top to bottom; the radiator is arranged and fixed on the rear side wall of the box base body and is in positive alignment with the transformer; the radiator comprises a radiating substrate and radiating fins; the number of the radiating fins is multiple, the radiating fins are fixed on the rear side wall of the radiating substrate and are arranged side by side along the width direction of the radiating substrate; the heat dissipation substrate is formed by cutting a red copper plate, and the thickness value t1 is not less than 8 mm; the radiating fins are aluminum castings, and the thickness value t2 is controlled to be 1-2 mm; the distance value d between every two heat dissipation fins is controlled to be 5-10 mm; just corresponding to the mounting position of the heat dissipation substrate, a heat dissipation notch is formed in the rear side wall of the box base body.

2. The switching power supply with good heat dissipation performance as claimed in claim 1, further comprising a sealing strip; a set distance is formed between the heat dissipation substrate and the peripheral side wall of the heat dissipation substrate, and an annular groove extends backwards from the front side wall of the heat dissipation substrate; the sealing strip is elastically pressed between the heat dissipation substrate and the box base body and is embedded in the annular groove.

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