Waterproof charger

Abstract

The invention provides a waterproof charger which comprises a shell, a mounting cavity is formed in the shell, a plurality of electronic components are arranged in the mounting cavity, opposite heat dissipation holes are formed in the side face of the shell, a heat dissipation cavity is formed between the opposite heat dissipation holes, a waterproof ring is arranged in the heat dissipation cavity, and the waterproof ring comprises a waterproof outer ring and a waterproof inner ring. A plurality of ventilation flow channels are formed between the waterproof outer ring and the waterproof inner ring, an annular flow guide groove is formed in the outer side face of the waterproof outer ring, a groove opening of the annular flow guide groove is opposite to the heat dissipation holes, and the side, close to the electronic component, of the waterproof ring abuts against and makes contact with the side face of the heat dissipation cavity so as to prevent water flowing into the heat dissipation cavity from overflowing to the installation cavity. The installation cavity, the ventilation flow channel and the heat dissipation cavity are communicated with the outside through the heat dissipation holes so that heat generated by the electronic components can be conducted out in time. The waterproof charger provided by the invention has heat dissipation and waterproof effects at the same time.

Description

Technical Field

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

[0002] A battery charger is an electronic device that charges rechargeable batteries used in electric vehicles, power tools, new energy vehicles, photovoltaics and other electronic appliances. It is generally composed of a casing, a power conversion part, a charging detection part, a charging protection part, etc.

[0003] With the promotion of green new energy travel, electric bicycles are booming and their market is expanding rapidly. The demand for charging is also rising rapidly. However, fires caused by battery charging have occurred repeatedly. There are many reasons for this, including heat generation during battery charging, charger failure during charging, and rainwater entering the charger during charging.

[0004] Since electric bicycles are generally charged outdoors, which is affected by typhoons, rain, snow and other environmental factors, most users currently cover the charger with waterproof cloth to reduce the amount of rainwater that enters the charger during charging. However, the waterproof cloth covering will make it difficult to dissipate the heat of the charger in time, and the charger may overheat and explode. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a waterproof charger to solve the technical problems existing in the prior art.

[0006] The present invention proposes a waterproof charger, comprising a shell, wherein a mounting cavity is provided in the shell, wherein a plurality of electronic components are arranged in the mounting cavity, wherein the side of the shell is provided with heat dissipation holes arranged oppositely, wherein a heat dissipation cavity is provided between the heat dissipation holes arranged oppositely, wherein a waterproof ring is provided in the heat dissipation cavity, wherein the waterproof ring comprises a waterproof outer ring and a waterproof inner ring, wherein the waterproof outer ring and the waterproof inner ring are connected by a plurality of spaced connecting plates, so that a plurality of ventilation channels are formed between the waterproof outer ring and the waterproof inner ring, wherein an annular guide groove is provided on the outer side surface of the waterproof outer ring, wherein the notch of the annular guide groove is arranged oppositely to the heat dissipation hole, so that water flowing in from one of the heat dissipation holes is guided to another of the heat dissipation holes through the guide groove and then flows out, wherein a side of the waterproof ring close to the electronic components is in contact with a side surface of the heat dissipation cavity, so as to prevent water flowing into the heat dissipation cavity from overflowing into the mounting cavity, wherein the mounting cavity, the ventilation channel and the heat dissipation cavity are connected with the outside through the heat dissipation holes, so as to timely conduct away the heat generated by the electronic components.

[0007] Preferably, the notches on both sides of the top of the guide groove are provided with an annular support platform extending axially along the waterproof ring, and the end of the support platform close to the installation cavity is provided with a waterproof protrusion extending radially along the waterproof ring, and the side of the waterproof ring close to the electronic component is in contact with the side of the heat dissipation cavity through the waterproof protrusion.

[0008] Preferably, both sides of the shell are provided with oppositely arranged heat dissipation holes and heat dissipation cavities, and the two heat dissipation cavities are respectively provided with a first accommodating cavity and a second accommodating cavity of different sizes on one side close to the installation cavity, and the width of the first accommodating cavity is greater than the width of the second accommodating cavity.

[0009] Preferably, a cooling fan is provided in the first accommodating cavity, the sum of the width of the cooling fan and the width of the waterproof protrusion is adapted to the width of the first accommodating cavity, and the waterproof protrusion on the waterproof ring close to the first accommodating cavity is restricted in the first accommodating cavity by the cooling fan, thereby restricting the axial movement of the waterproof ring close to the first accommodating cavity.

[0010] Preferably, the width of the second accommodating cavity is matched with the width of the waterproof protrusion, and the waterproof protrusion on the waterproof ring close to the second accommodating cavity is confined in the second accommodating cavity, thereby limiting the axial movement of the waterproof ring close to the second accommodating cavity.

[0011] Preferably, an annular opening is provided on the side plate of the heat dissipation cavity close to the installation cavity, the inner diameter of the annular opening is adapted to the outer diameter of the support platform, and the annular opening is used to limit the waterproof ring to limit the radial movement of the waterproof ring.

[0012] Preferably, the waterproof inner ring of the waterproof ring is a block-shaped closed structure, and the center of the waterproof inner ring protrudes toward the installation cavity.

[0013] Preferably, the waterproof inner ring is conical, and the apex of the conical waterproof inner ring is arranged close to the installation cavity.

[0014] Preferably, the cross-section of the guide groove is one of a "V" shape, a "U" shape, an "I" shape, and a "W" shape.

[0015] Preferably, the housing comprises an upper housing and a lower housing, and the upper housing and the lower housing are fixedly connected by bolts.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the waterproof charger provided by the present application comprises a shell, an installation cavity is provided in the shell, a plurality of electronic components are arranged in the installation cavity, heat dissipation holes are arranged oppositely on the side of the shell, a heat dissipation cavity is provided between the two oppositely arranged heat dissipation holes, a waterproof ring is provided in the heat dissipation cavity, when rainwater enters the heat dissipation cavity through the heat dissipation holes on the upper surface, the rainwater entering the heat dissipation cavity falls into the guide groove, and flows into the heat dissipation holes on the lower surface through the guide groove, the side of the waterproof ring close to the electronic components is in contact with the side of the heat dissipation cavity to prevent the water flowing into the heat dissipation cavity from overflowing into the installation cavity; in addition, a plurality of ventilation air channels are formed between the waterproof outer ring and the waterproof inner ring of the waterproof ring, the installation cavity, the ventilation air channels and the heat dissipation cavity are connected with the outside world through the heat dissipation holes, so as to timely conduct the heat generated by the electronic components in the installation cavity; the waterproof charger provided by the present application can not only ensure good heat dissipation, but also effectively prevent the entry of rainwater in the external environment, and is suitable for large-scale promotion.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the external structure of the waterproof charger in Example 1;

[0019] Figure 2 This is a schematic diagram of the internal structure of the waterproof charger in Example 1;

[0020] Figure 3 for Figure 1 Schematic diagram of the structure of the middle and lower shell;

[0021] Figure 4 for Figure 3 Schematic diagram of the structure after the waterproof ring and cooling fan are installed in the middle and lower shell;

[0022] Figure 5 for Figure 4 A schematic diagram of the partially enlarged structure at center A;

[0023] Figure 6 for Figure 4 A schematic diagram of the partially enlarged structure at B in the middle;

[0024] Figure 7 for Figure 1 Schematic diagram of the structure of the middle waterproof ring from the first perspective;

[0025] Figure 8 for Figure 1 Schematic diagram of the structure of the middle waterproof ring from the second perspective;

[0026] Fig. 9 for Figure 1 Schematic diagram of the structure of the middle waterproof ring from the third perspective;

[0027] Fig.10 for Figure 1 A schematic diagram of the structure of the middle waterproof ring and the fan from the first perspective;

[0028] Fig.11 for Figure 1 Schematic diagram of the structure of the middle waterproof ring and the fan from a second perspective.

[0029] Description of main component symbols:

[0030] 10. Shell; 11. Installation cavity; 12. Heat dissipation hole; 13. AC power input line; 14. DC power output line; 20. Heat dissipation cavity; 21. First accommodating cavity; 22. Second accommodating cavity; 23. Annular opening; 30. Waterproof ring; 31. Waterproof outer ring; 32. Waterproof inner ring; 33. Connecting plate; 34. Air flow channel; 35. Guide groove; 36. Support platform; 37. Waterproof protrusion; 40. Cooling fan.

[0031] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art 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 present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] Example 1

[0035] Specifically, Figures 1 to 11As shown, a waterproof charger provided by an embodiment of the present invention includes a housing 10, a mounting cavity 11 is provided in the housing, a plurality of electronic components are arranged in the mounting cavity 11, a side of the housing 10 is provided with heat dissipation holes 12 arranged opposite to each other, a heat dissipation cavity 20 is provided between the two heat dissipation holes 12 arranged opposite to each other, a waterproof ring 30 is provided in the heat dissipation cavity 20, and the waterproof ring 30 includes a waterproof outer ring 31 and a waterproof inner ring 32, and the waterproof outer ring 31 and the waterproof inner ring 32 are connected by a plurality of spaced connecting plates 33, so that a plurality of vents are formed between the waterproof outer ring 31 and the waterproof inner ring 32. The flow channel 34 and the outer side surface of the waterproof outer ring 31 are provided with an annular guide groove 35, and the notches of the annular guide groove 35 are arranged opposite to the heat dissipation holes 12 on both sides, so that the water flowing in from one heat dissipation hole 12 is guided to the other heat dissipation hole 12 through the guide groove 35 and then flows out. The side of the waterproof ring 30 close to the electronic components is in contact with the side of the heat dissipation cavity 20 to prevent the water flowing into the heat dissipation cavity 20 from overflowing into the installation cavity 11. The installation cavity 11, the air flow channel 34 and the heat dissipation cavity 20 are connected with the outside through the heat dissipation holes 12, so as to timely discharge the heat generated by the electronic components.

[0036] Optionally, in this embodiment, in order to facilitate the description of the internal structure, the upper half of the charger of the shell is hidden for explanation; the waterproof charger includes a shell 10, and the electronic device is arranged in the installation cavity 11 in the middle of the shell 10. The side of the shell is provided with a heat dissipation hole 12 connected to the upper and lower sides, and a waterproof ring 30 is provided between the two heat dissipation holes 12. The outer side surface of the waterproof outer ring of the waterproof ring 30 is provided with an annular guide groove 35, and the notches of the guide groove 35 are respectively arranged corresponding to the upper and lower heat dissipation holes 12, and the cross-section of the guide groove is one of "V" shape, "U" shape, "I" shape, and "W" shape; when rainwater enters the heat dissipation cavity 20 through the heat dissipation holes on the upper surface, the rainwater entering the heat dissipation cavity 20 falls into the guide groove 35, and flows into the heat dissipation holes on the lower surface through the guide groove, And then flow out through the heat dissipation holes below; the side of the waterproof ring 30 close to the electronic components is in contact with the side of the heat dissipation cavity 20 to prevent the water flowing into the heat dissipation cavity 20 from overflowing into the installation cavity 11; in addition, a plurality of ventilation air channels 34 are formed between the waterproof outer ring and the waterproof inner ring of the waterproof ring 30, and the installation cavity 11, the ventilation air channels 34 and the heat dissipation cavity 20 are connected to the outside through the heat dissipation holes 12, so as to timely discharge the heat generated by the electronic components in the installation cavity 11; the waterproof charger provided in this embodiment, by arranging the waterproof ring 30 between the heat dissipation holes 12, can timely discharge the rainwater entering through the heat dissipation holes 12; while ensuring that the heat generated by the electronic components can be timely discharged, it effectively prevents rainwater from entering the charger, thereby improving the safety of charging.

[0037] Optionally, in this embodiment, if Figures 7 to 9As shown, on both sides of the top of the diversion groove 35, there are annular support platforms 36 extending along the axial direction of the waterproof ring 30. At the end of the support platform 36 close to the installation cavity 11, there is a waterproof protrusion 37 extending along the radial direction of the waterproof ring. One side of the waterproof ring 30 close to the electronic components abuts against the side of the heat dissipation cavity through the waterproof protrusion 37. By setting the waterproof protrusion 37, it can prevent rainwater from being blown obliquely into the installation cavity in windy conditions. Further, as Figure 3 shown, on both sides of the housing 10, there are heat dissipation holes and heat dissipation cavities arranged oppositely. On the side of the left and right heat dissipation cavities 20 close to the installation cavity 11, there are a first accommodation cavity 21 and a second accommodation cavity 22 with different sizes respectively. The width of the first accommodation cavity 21 is greater than the width of the second accommodation cavity 22. Optionally, for the convenience of description, the first accommodation cavity 21 is arranged on the left side of the housing. There is an AC power input line 13 on the left side of the housing 10. The second accommodation cavity 22 is arranged on the right side of the housing. There is a DC power output line 14 on the right side of the housing 10.

[0038] Optionally, in this embodiment, as Figure 3 and Figure 6 shown, a heat dissipation fan 40 is arranged in the first accommodation cavity 21. The width of the first accommodation cavity 21 is adapted to the sum of the width of the heat dissipation fan 40 and the width of the waterproof protrusion 37. The waterproof protrusion 37 on the waterproof ring 30 close to the first accommodation cavity is restricted in the first accommodation cavity 21 by the heat dissipation fan 40, thereby restricting the axial movement of the waterproof ring close to the first accommodation cavity 21. The width of the second accommodation cavity 22 is adapted to the width of the waterproof protrusion 37. The waterproof protrusion 37 on the waterproof ring 30 close to the second accommodation cavity 22 is restricted in the second accommodation cavity 22, thereby restricting the axial movement of the waterproof ring close to the second accommodation cavity. That is, in this embodiment, through the action of the heat dissipation fan 40, the gas flow inside the charger is promoted, and thus the heat dissipation rate is accelerated. The two waterproof rings 30 are respectively restricted in the two accommodation cavities through the corresponding waterproof protrusions 37 to prevent the waterproof rings from moving axially.

[0039] Further, in this embodiment, as Figure 3As shown, an annular opening 23 is provided on the side plate of the heat dissipation cavity 20 close to the installation cavity 11, and the inner diameter size of the annular opening 23 is adapted to the outer diameter size of the support platform 36, and the annular opening 23 is used to limit the waterproof ring 30 to limit the radial movement of the waterproof ring 30; in this embodiment, the shell 10 includes an upper shell and a lower shell, and the upper shell and the lower shell are fixedly connected by bolts, or fixedly connected by bolts and snap fit, and the upper shell is provided with a status indicator light; when installing the waterproof ring 30, first turn the side of the waterproof ring 30 with the waterproof protrusion 37 inward, and the lower half of the waterproof ring 30 is installed in the corresponding accommodating cavity of the lower shell, and the annular opening 23 is provided on the side plate to have a certain supporting effect on the support platform 36, and then the upper shell is covered so that the upper half of the waterproof ring 30 is installed in the corresponding accommodating cavity of the upper shell; the waterproof ring 30 is prevented from moving in the heat dissipation cavity by limiting the accommodating cavity and the annular opening 23.

[0040] Furthermore, in this embodiment, the waterproof inner ring 32 of the waterproof ring 30 is a block-shaped closed structure, and the center of the waterproof inner ring 32 is concave toward the direction close to the installation cavity. Specifically, the waterproof inner ring 32 is concave, and the apex of the conical waterproof inner ring is arranged close to the installation cavity, that is, the waterproof inner ring 32 of the waterproof ring 30 is a convex inner and concave outer structure. By setting the concave waterproof inner ring 32, as shown in the figure, even if the inclined rainwater from the outside overflows to the outside of the guide groove 35, it can still be reflected by the side wall of the charger and guided to the heat dissipation hole below by the concave structure of the waterproof inner ring 32, further improving the waterproof effect.

[0041] In summary, the waterproof charger provided by the present application includes a shell 10, a mounting cavity 11 is provided in the shell, a plurality of electronic components are arranged in the mounting cavity 11, a side of the shell 10 is provided with heat dissipation holes 12 arranged oppositely, a heat dissipation cavity 20 is provided between the two oppositely arranged heat dissipation holes 12, a waterproof ring 30 is provided in the heat dissipation cavity 20, when rainwater enters the heat dissipation cavity 20 through the heat dissipation holes on the upper surface, the rainwater entering the heat dissipation cavity 20 falls into the guide groove 35, and flows into the heat dissipation holes on the lower surface through the guide groove, and the side of the waterproof ring 30 close to the electronic components is in contact with the side of the heat dissipation cavity 20 to prevent the water flowing into the heat dissipation cavity 20 from overflowing into the mounting cavity 11; in addition, a plurality of ventilation channels 34 are formed between the waterproof outer ring and the waterproof inner ring of the waterproof ring 30, and the mounting cavity 11, the ventilation channel 34 and the heat dissipation cavity 20 are connected with the outside through the heat dissipation holes 12, so as to timely conduct the heat generated by the electronic components in the mounting cavity 11; the waterproof charger provided by the present application can not only ensure good heat dissipation, but also effectively prevent the entry of rainwater in the external environment, and is suitable for large-scale promotion.

[0042] It should be noted that the above implementation process is only to illustrate the feasibility of the present application, but this does not mean that the waterproof charger of the present application is only subject to the above implementation processes. On the contrary, as long as the waterproof charger of the present application can be implemented, it can be included in the feasible implementation plan of the present application.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0044] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A waterproof charger, characterized in that: The invention comprises a shell, wherein a mounting cavity is arranged in the shell, and a plurality of electronic components are arranged in the mounting cavity. The side surface of the shell is provided with heat dissipation holes which are arranged oppositely, and a heat dissipation cavity is arranged between the heat dissipation holes which are arranged oppositely. A waterproof ring is arranged in the heat dissipation cavity, and the waterproof ring comprises a waterproof outer ring and a waterproof inner ring. The waterproof outer ring and the waterproof inner ring are connected by a plurality of connection plates which are arranged at intervals, so that a plurality of air flow channels are formed between the waterproof outer ring and the waterproof inner ring. An annular guide groove is arranged on the outer side surface of the waterproof outer ring, and the notch of the annular guide groove is arranged oppositely to the heat dissipation hole, so that water flowing in from one heat dissipation hole is guided to another heat dissipation hole through the guide groove and then flows out. A side of the waterproof ring close to the electronic components is in contact with a side surface of the heat dissipation cavity, so as to prevent the water flowing into the heat dissipation cavity from overflowing into the mounting cavity. The mounting cavity, the air flow channel and the heat dissipation cavity are connected with the outside through the heat dissipation holes, so as to timely conduct the heat generated by the electronic components.

2. The waterproof charger according to claim 1, characterized in that: The notches on both sides of the top of the guide groove have an annular support platform extending axially along the waterproof ring, and the end of the support platform close to the installation cavity has a waterproof protrusion extending radially along the waterproof ring. The side of the waterproof ring close to the electronic component is in contact with the side of the heat dissipation cavity through the waterproof protrusion.

3. The waterproof charger according to claim 2, characterized in that: Both sides of the shell are provided with heat dissipation holes and heat dissipation cavities arranged oppositely, and the two heat dissipation cavities are respectively provided with a first accommodating cavity and a second accommodating cavity of different sizes on one side close to the installation cavity, and the width of the first accommodating cavity is greater than the width of the second accommodating cavity.

4. The waterproof charger according to claim 3, characterized in that: A cooling fan is provided in the first accommodating chamber, and the sum of the width of the cooling fan and the width of the waterproof protrusion is adapted to the width of the first accommodating chamber. The waterproof protrusion on the waterproof ring close to the first accommodating chamber is restricted in the first accommodating chamber by the cooling fan, thereby restricting the axial movement of the waterproof ring close to the first accommodating chamber.

5. The waterproof charger according to claim 3, characterized in that: The width of the second accommodating cavity is matched with the width of the waterproof protrusion, and the waterproof protrusion on the waterproof ring close to the second accommodating cavity is restricted in the second accommodating cavity, thereby restricting the axial movement of the waterproof ring close to the second accommodating cavity.

6. The waterproof charger according to claim 3, characterized in that: An annular opening is provided on the side plate of the heat dissipation cavity close to the installation cavity, the inner diameter of the annular opening is matched with the outer diameter of the support platform, and the annular opening is used to limit the waterproof ring to limit the radial movement of the waterproof ring.

7. The waterproof charger according to claim 1, characterized in that: The waterproof inner ring of the waterproof ring is a block-shaped closed structure, and the center of the waterproof inner ring protrudes toward the direction close to the installation cavity.

8. The waterproof charger according to claim 7, characterized in that: The waterproof inner ring is conical, and the apex of the conical waterproof inner ring is arranged close to the installation cavity.

9. The waterproof charger according to claim 1, characterized in that: The cross section of the guide groove is one of "V"-shaped, "U"-shaped, "I"-shaped, and "W"-shaped.

10. The waterproof charger according to claim 1, characterized in that: The housing comprises an upper housing and a lower housing, and the upper housing and the lower housing are fixedly connected by bolts.

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