CN212137321U

CN212137321U - Solar charging controller

Info

Publication number: CN212137321U
Application number: CN202020870218.3U
Authority: CN
Inventors: 邹俊
Original assignee: Shenzhen Hehejin Industrial Co ltd
Current assignee: Shenzhen Hehejin Industrial Co ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2020-12-11
Anticipated expiration: 2030-05-22

Abstract

The utility model discloses a solar charging controller, including casing and the control circuit subassembly of setting in the casing, the control circuit subassembly has PCB board, control chip and charging and discharging circuit, and this control chip is integrated on the first surface of PCB board, control chip is connected with the charging and discharging circuit electricity, a semiconductor refrigeration piece has in the casing, the wiring end of this semiconductor refrigeration piece with charging and discharging circuit's feed end electricity is connected, and the first surface of this semiconductor refrigeration piece with the control chip contact, its second surface with the interior bottom surface contact of casing. According to the solar charging controller, the semiconductor refrigerating piece is arranged in the shell to realize heat dissipation of the control chip, so that the heat dissipation performance of the control chip is improved, the heat dissipation performance of the whole solar charging controller is further optimized, and the working performance of the solar charging controller is improved.

Description

Solar charging controller

Technical Field

The utility model belongs to the technical field of solar power system technique and specifically relates to a solar charging controller.

Background

In the present day of global energy situation tension, all countries in the world seek new energy replacement strategy to obtain sustainable development and obtain an advantage position in future development. Solar energy is the focus of attention today with its significant advantages of being clean, renewable, safe, etc. In particular to a solar photovoltaic power generation technology, the development is rapid. And the solar controller is the core structure of solar photovoltaic power generation. With the continuous development of the technology, the miniaturization of the solar controller becomes a trend, and because the size of the solar controller is smaller and smaller, in some application occasions, in order to avoid the electronic components from being corroded by substances such as water vapor, dust and the like and provide good electromagnetic environment for electronic equipment, the shell of the solar controller is often designed to be a sealing structure, but the heat dissipation performance of the solar controller is influenced to a certain extent, so that the internal temperature is increased, and the working performance of the solar controller is influenced. In order to reduce the temperature of the solar controller and improve the heat dissipation performance, the conventional solar controller usually achieves the heat dissipation effect by arranging the heat dissipation fins on the periphery of the shell. Although the internal temperature of the solar controller is reduced to a certain extent by the technology, because the heating degrees of different components in the internal circuit structure are different, the control chip is often the component with the highest heating degree, and the control chip should be subjected to targeted heat dissipation to ensure the effective work of the control chip, the current solar controller has no technology for performing special heat dissipation treatment on the controller for a while.

Therefore, the above technical problem needs to be solved.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art, the utility model provides a solar charging controller, aim at realize improving solar charging controller's radiating effect to control chip's pertinence heat dissipation processing.

In order to solve the technical problem, the utility model provides a basic technical scheme does:

a solar charging controller comprises a shell and a control circuit assembly arranged in the shell, wherein the control circuit assembly is provided with a PCB, a control chip and a charging and discharging circuit, the control chip is integrated on a first surface of the PCB, the control chip is electrically connected with the charging and discharging circuit,

the shell is internally provided with a semiconductor refrigeration piece, a wiring terminal of the semiconductor refrigeration piece is electrically connected with a power supply terminal of the charge-discharge circuit, a first surface of the semiconductor refrigeration piece is contacted with the control chip, and a second surface of the semiconductor refrigeration piece is contacted with the inner bottom surface of the shell.

Further, the housing comprises a base and an upper cover, the base is provided with a depressed area facing the upper cover, the depressed area at least extends to one side of the base, so that the depressed area forms a channel communicated with the outside when the base is contacted with an attachment, and the semiconductor refrigeration piece is arranged on the inner bottom surface of the depressed area.

Furthermore, the channel is arranged along a straight line and penetrates through two sides of the base.

Further, one end of the channel is in a flared bell mouth shape.

Furthermore, the tail part of the shell is hermetically connected with a sealing element, the sealing element is provided with a plurality of sealing sleeve holes which are the same as and communicated with the number of the insertion ports arranged at the tail part of the shell, and the connecting wire is hermetically sealed in the sealing sleeve holes during assembly.

Furthermore, the sealing element comprises two covering parts, each covering part is provided with a plurality of clamping grooves, and when the two covering parts are covered together, one clamping groove of one covering part and the other clamping groove of the covering part are correspondingly matched into one sealing sleeve hole.

Furthermore, each clamping groove is provided with at least two sealing ribs arranged along the circumferential length of the clamping groove and used for achieving sealing contact with the connecting wire when the clamping groove is sleeved with the connecting wire.

The utility model has the advantages that:

the technical scheme of the utility model a solar charging controller, including casing and the control circuit subassembly of setting in the casing, the control circuit subassembly has PCB board, control chip and charging and discharging circuit, and this control chip is integrated on the first surface of PCB board, control chip is connected with the charging and discharging circuit electricity, a semiconductor refrigeration piece has in the casing, the wiring end of this semiconductor refrigeration piece with charging and discharging circuit's feed end electricity is connected, and the first surface of this semiconductor refrigeration piece with the control chip contact, its second surface with the interior bottom surface contact of casing. According to the solar charging controller, the semiconductor refrigerating piece is arranged in the shell to realize heat dissipation of the control chip, so that the heat dissipation performance of the control chip is improved, the heat dissipation performance of the whole solar charging controller is further optimized, and the working performance of the solar charging controller is improved.

Drawings

Fig. 1 is a schematic view of an internal structure of a solar charging controller according to the present invention;

fig. 2 is a schematic circuit connection diagram of a solar charging controller according to the present invention;

FIG. 3 is a schematic diagram of a channel structure;

FIG. 4 is a schematic view of the seal configuration;

fig. 5 is a schematic structural view of the covering part.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to fig. 1 to 5, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if the directions related to the embodiments of the present invention are defined by the attached drawings, for example, the inside and outside directions described below are defined by the inside and the outside of the housing, for example, the inside refers to the inside of the housing, and the outside refers to the outside of the housing. If a particular gesture changes, the directional indication changes accordingly.

Referring to fig. 1 and 2, the solar charging controller of the present embodiment includes a housing 1 and a control circuit assembly 2 disposed in the housing 1, wherein the control circuit assembly 2 has a PCB 21, a control chip 22 and a charging and discharging circuit 23, the control chip 22 is integrated on a first surface of the PCB 21, and the control chip 22 is electrically connected to the charging and discharging circuit 23; the shell 1 is internally provided with a semiconductor refrigeration piece 3, a wiring terminal of the semiconductor refrigeration piece 3 is electrically connected with a power supply terminal of the charge-discharge circuit 23, a first surface of the semiconductor refrigeration piece 3 is contacted with the control chip 22, and a second surface of the semiconductor refrigeration piece 3 is contacted with the inner bottom surface of the shell 1.

In operation, the control chip 22 is used to control the charging and discharging circuit 23 to perform charging and discharging, for example, to control charging of the storage battery and to control power supply to the load. Of course, the specific working principle, the circuit structure, and the like of the control chip 22 and the charge and discharge circuit 23 are not the core of this solution and are not described herein, for example, these control chip 22 and the charge and discharge circuit 23 may be implemented by using a known technology. It should be appreciated that during a particular operation, the control chip 22 may emit a significant amount of heat, which may affect the operational performance of the control chip 22. Therefore, in this embodiment, the semiconductor cooling plate 3 is used to rapidly cool the control chip 22, so as to ensure that the control chip 22 can be kept at a proper temperature, thereby improving the working performance of the control chip 22 and accelerating the cooling of the whole solar charging controller compared with the conventional solar charging controller. Particularly, semiconductor refrigeration piece 3 realizes the power supply through charge-discharge circuit 23, and this semiconductor refrigeration piece 3 realizes refrigerating, because the interior bottom surface contact of control chip 22 and casing is respectively on the first surface and the second surface of semiconductor refrigeration piece 3, consequently this semiconductor refrigeration piece 3 can be through heat-conduction mode with control chip 22's heat conduct to casing 1 department fast in order to realize the inside heat of solar charging controller fast conduct to the outside in order to reach quick radiating effect when work.

Wherein, it should be understood that the semiconductor chilling plates 3 can be implemented by using the semiconductor chilling plates known in the prior art. In specific assembly, the first surface and the second surface of the semiconductor chilling plate 3 can be coated with heat-conducting glue to realize matching with the control chip 22 and the inner bottom surface of the shell 1 and realize heat conduction.

Specifically, the charging and discharging circuit 23 has a dc output terminal, and is configured to supply power to the semiconductor chilling plate 3. The power supply end of the corresponding charge and discharge circuit 23 is selected according to the power supply voltage requirements of the semiconductor chilling plates 3 of different models, for example, the 6V semiconductor chilling plate 3 is connected with the 6V charge and discharge circuit 23.

In addition, in order to facilitate the assembly of the semiconductor chilling plates 3, a recessed area (not shown) is provided at the inner surface of the housing 1, so that the semiconductor chilling plates 3 are directly fixed in the recessed area during the assembly.

In detail, in other embodiments, the housing 1 includes a base 11 and an upper cover 12, the base 11 and the upper cover 12 are hermetically matched to form a receiving space, and the semiconductor chilling plate 3 and the control circuit assembly 2 are disposed in the receiving space. Wherein the base 11 has a recessed area 111 facing the upper cover 12, the recessed area 111 extends at least to one side of the base 11 so that the recessed area 111 forms a passage 112 communicating with the outside when the base 11 is in contact with an attachment, wherein the semiconductor chilling plate 3 is disposed on the inner bottom surface of the recessed area 111. In this embodiment, the channel 112 formed when the base 11 of the housing 1 contacts with the attachment can dissipate heat conducted by the semiconductor chilling plate 3 to the outside air in a radiation and convection manner, so as to ensure rapid dissipation of heat. It should be understood that the channel 112 is open to the outside, i.e., outside air can flow through the channel 112, which accelerates the heat dissipation when the air flows.

Preferably, the channel 112 is arranged along a straight line and penetrates through both sides of the base 11. That is, as shown in fig. 3, the passage 112 extends through the left and right sides of the base 11. Thus, the channel 112 is communicated with the outside at the left and right sides, so that an air flow channel arranged at the left and right sides is formed, air can flow in the channel 112 during operation, and the air takes away heat in the flowing process to realize accelerated heat dissipation. It should be understood that the size of the channel 112 may be set according to the specific application, for example, the width of the channel 112 is the same as the width of the semiconductor chilling plate 3, or the width of the channel 112 is equal to half of the length of the base 11, although the size may be set according to the actual heat dissipation requirement, and any simple modification size falls within the protection scope of the present technical solution.

To accelerate the air flow, one end of the channel 112 is flared in a flared flare shape. I.e., one end of the channel 112 is a large end that is larger than the width dimension of the entire channel 112, which facilitates the flow of air. Of course, the ports may be provided in an outwardly flared flare shape on both sides of the channel 112.

In short, in the present embodiment, the semiconductor cooling plate 3 is used to cool and dissipate the heat of the control chip 22, so as to ensure the working efficiency of the control chip 22 and improve the heat dissipation performance of the solar controller.

In other embodiments, since the solar charging controller of the present disclosure is designed in a sealed manner, the connection point should be sealed. Specifically, as shown in fig. 1 and 4, the tail portion of the housing 1 is hermetically connected to a sealing member 4, the sealing member 4 has a plurality of sealing sleeve holes 41 which are the same in number and communicated with the insertion ports arranged at the tail portion of the housing 1, and the connecting wires are hermetically sleeved in the sealing sleeve holes 41 during assembly. Specifically, a slot hole 13 is formed at the tail of the housing 1, and the sealing element 4 is inserted into the slot hole 13 to realize sealing connection with the tail of the housing 1 during assembly. The sealing element 4 is elastic and made of plastic, is in interference fit with the slotted hole 13 to realize sealing connection, and the combination part of the periphery of the sealing element 4 and the slotted hole 13 is sealed after the sealing element is matched, so that the infiltration of moisture can be prevented. When the connector is applied specifically, the connecting wire penetrates through the slotted hole 13 and then is spliced with the plug interface, the connecting wire is in sealing fit with the sealing sleeve hole 41, and therefore moisture, impurities and the like are prevented from permeating into the slotted hole 13 at the tail part of the shell 1, and the splicing stability of the plug interface is further influenced.

In detail, referring to fig. 4 and 5, the sealing member 4 includes two covering portions 42, each covering portion 42 has a plurality of slots 421, and when the two covering portions 42 are covered together, the slot 421 of one covering portion 42 is correspondingly matched with the slot 421 of the other covering portion 42 to form one sealing sleeve hole 41. It will be appreciated that the two closure portions 42 are of identical construction and when closed together form the seal 4. During assembly, one covering part 42 is inserted into the slotted hole 13, the patch cord is inserted into the corresponding jack after passing through the slotted hole 13, the patch cord part falls into the clamping groove 421, then the other covering part 42 is also inserted into the slotted hole 13 and is overlapped with the previously inserted covering part 42, and finally the two covering parts 42 are fixedly connected together through screws in a threaded manner. That is, in the present embodiment, the patch cord is sealed by the two covering portions 42 to prevent moisture from entering.

Preferably, in order to improve the sealing performance of the covering portion 42 when being engaged with the patch cord, each of the locking grooves 421 has at least two sealing ribs 422 arranged along the circumferential length of the locking groove for achieving sealing contact with the patch cord when being sleeved with the patch cord. I.e. a better sealing is achieved by the ribs 422 being in close contact with the patch cord.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. A solar charging controller, comprising a case (1) and a control circuit assembly (2) disposed in the case (1), the control circuit assembly (2) having a PCB board (21), a control chip (22) and a charging and discharging circuit (23), the control chip (22) being integrated on a first surface of the PCB board (21), the control chip (22) being electrically connected with the charging and discharging circuit (23), characterized in that:

the semiconductor refrigerating sheet (3) is arranged in the shell (1), a wiring terminal of the semiconductor refrigerating sheet (3) is electrically connected with a power supply terminal of the charging and discharging circuit (23), a first surface of the semiconductor refrigerating sheet (3) is in contact with the control chip (22), and a second surface of the semiconductor refrigerating sheet is in contact with the inner bottom surface of the shell (1).

2. The solar charging controller of claim 1, wherein:

the shell (1) comprises a base (11) and an upper cover (12), wherein the base (11) is provided with a concave area (111) facing the upper cover (12), the concave area (111) at least extends to one side of the base (11) so that the concave area (111) forms a channel (112) communicated with the outside when the base (11) is contacted with an attachment, and the semiconductor chilling plate (3) is arranged on the inner bottom surface of the concave area (111).

3. A solar charging controller as claimed in claim 2, wherein:

the channel (112) is arranged along a straight line and penetrates through two sides of the base (11).

4. A solar charging controller as claimed in claim 3, wherein:

one end of the channel (112) is flared outwards.

5. The solar charging controller of claim 1, wherein:

the tail part of the shell (1) is hermetically connected with a sealing element (4), the sealing element (4) is provided with a plurality of sealing sleeve holes (41) which are the same as and communicated with the number of the inserting ports arranged at the tail part of the shell (1), and the connecting wire is hermetically sleeved in the sealing sleeve holes (41) during assembly.

6. The solar charging controller of claim 5, wherein:

the sealing element (4) comprises two covering parts (42), each covering part (42) is provided with a plurality of clamping grooves (421), and when the two covering parts (42) are covered together, the clamping groove (421) of one covering part (42) is correspondingly matched with the clamping groove (421) of the other covering part (42) to form one sealing sleeve hole (41).

7. The solar charging controller of claim 6, wherein:

each clamping groove (421) is provided with at least two sealing ribs (422) which are arranged along the circumferential length of the clamping groove (421) and are used for realizing sealing contact with the connecting wire when the connecting wire is sleeved.