Quick-release charger

Abstract

The utility model discloses a quick release type charger which comprises a charger box, an input power line and an output power line, the input power line and the output power line extend outwards from the inside of the charger box, the charger box comprises a shell, a containing cavity is formed in the shell, a circuit board assembly and a fan are arranged in the containing cavity, and the fan is used for air exchange inside and outside the containing cavity. The fan is provided with a quick-connection type first power supply end, a quick-connection type second power supply end is arranged in the containing cavity, the first power supply end and the second power supply end are coupled to be used for supplying power to the fan, and the circuit board assembly, the input power line, the output power line and the second power supply end are electrically connected. The first power supply end and the second power supply end can be quickly coupled to supply power to the fan, additional wiring for the fan is not needed, the fan is convenient to maintain, and the convenience of the maintenance work of the charger is improved; gas exchange between the containing cavity and the outside is achieved through the fan, heat dissipation can be conducted on heating elements such as the circuit board assembly in the containing cavity, and the service life of the charger is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of chargers, and in particular to a quick-release charger. Background Technology

[0002] Electric vehicle chargers are accessories used to charge electric vehicles. In the existing technology, chargers generally include a housing, a transmission harness, and electrical components installed in the housing. The electrical components are usually directly fixed in the housing along with the wiring harness. When the electrical components are damaged and need to be replaced, the damaged electrical components are difficult to remove from the housing, making it inconvenient to repair the charger. This needs to be improved. Summary of the Invention

[0003] This invention addresses the shortcomings of existing chargers where electrical components are fixedly installed, making component removal difficult and hindering subsequent maintenance. It provides a new quick-release charger.

[0004] To solve the above-mentioned technical problems, this utility model achieves this through the following technical solution:

[0005] A quick-release charger includes a charger box and an input power cable and an output power cable extending outward from the charger box. The charger box includes a housing with a cavity inside. A circuit board assembly and a fan are disposed within the cavity. The fan is used for air exchange between the inside and outside of the cavity. The fan has a quick-connect first power terminal, and the cavity has a quick-connect second power terminal. The first power terminal and the second power terminal are coupled to supply power to the fan. The circuit board assembly, the input power cable, the output power cable, and the second power terminal are electrically connected.

[0006] The first and second power terminals can be quickly coupled to power the fan, eliminating the need for additional wiring. This facilitates the disassembly, replacement, and repair of the fan, and improves the ease of later maintenance of the charger. The fan enables gas exchange between the housing and the outside environment, thereby dissipating heat from the circuit board components and other heat-generating elements inside the housing and extending the charger's lifespan.

[0007] Preferably, in the quick-release charger described above, the housing has a quick-release port that communicates with the receiving cavity, and a cover plate is detachably provided at the quick-release port. The cover plate controls the opening and closing of the quick-release port, and the quick-release port is used for the fan to enter and exit the receiving cavity.

[0008] The fan can be cleaned, replaced, or repaired by removing the cover from the quick-release port without opening the entire casing, further improving the convenience of repairing the charger.

[0009] Preferably, in the quick-release charger described above, there are two fans, one of which blows air into the receiving cavity and the other blows air out of the receiving cavity.

[0010] One fan draws outside air into the housing, while another fan blows the hot air from inside the housing outward, thus creating convection airflow within the housing, which effectively dissipates heat from heat-generating components such as circuit board assemblies inside the housing.

[0011] Preferably, in the quick-release charger described above, the two fans are disposed on a set of opposing inner sidewalls within the receiving cavity, and the corresponding inner sidewalls have ventilation windows, and the circuit board assembly is disposed between the two fans.

[0012] The fans are positioned opposite each other, and the circuit board assembly is located between the two fans, which can more effectively dissipate heat from the circuit board assembly and other heat-generating components inside the cavity. The ventilation window facilitates the exchange of gas inside the cavity with the outside gas.

[0013] Preferably, in the quick-release charger described above, the receiving cavity has several pads and several connecting posts for fixing the circuit board assembly. The pads and the connecting posts support the lower end of the circuit board assembly, forming a space for airflow on the upper and lower sides of the circuit board assembly.

[0014] The circuit board assembly is suspended in the housing cavity by pads and connecting posts, so that the air blown into the housing cavity by the fan flows out from the top and bottom of the circuit board assembly, which increases the heat dissipation area of ​​the circuit board assembly, improves the heat dissipation effect of the charger, and further improves the safety of the circuit board assembly during use.

[0015] Preferably, in the quick-release charger described above, the receiving cavity also has a base for supporting the circuit board assembly. The upper surface of the base forms a thermally conductive adhesive groove around the circuit board assembly in the circumferential direction. The thermally conductive adhesive groove is used to install the circuit board assembly and fill it with insulating thermally conductive adhesive.

[0016] The base facilitates the fixing of the circuit board assembly within the receiving cavity, while the thermally conductive adhesive groove provides surrounding protection for the circuit board assembly, improving its stability during fixing. Furthermore, by filling the thermally conductive adhesive groove with insulating thermally conductive adhesive, the heat generated by the circuit board assembly can be further dissipated outwards, further enhancing the safety of the circuit board assembly during use.

[0017] Preferably, in the quick-release charger described above, the lower end face of the base has several flow-guiding grilles that extend along the direction of gas flow within the space.

[0018] Several flow-guiding grids can guide the flow of gas within the space, improving the smoothness of gas flow within the containment cavity.

[0019] Preferably, in the quick-release charger described above, a baffle and a limiting block are provided in the receiving cavity, a limiting area is formed between the baffle and the inner wall of the housing, the quick-release port is directly opposite the limiting area, the second power terminal and the limiting block are disposed in the limiting area, the fan is placed in the limiting area and is in contact with the baffle, and the bottom of the fan is in contact with the top of the limiting block.

[0020] The baffle separates the circuit board assembly from the fan, improving the safety of the circuit board assembly during use. It also limits the fan's movement, improving its stability and ensuring the fan's heat dissipation effect on the housing. The limiting area is aligned with the quick-release port, facilitating the quick installation of the fan within the limiting area and improving the smoothness of fan installation and removal.

[0021] As a preferred embodiment, the quick-release charger described above includes an upper cover and a lower cover in its housing, with the quick-release port disposed on the upper cover and the baffle and limiting block disposed inside the lower cover.

[0022] The upper cover has a snap-fit ​​groove, and the lower cover has a snap-fit ​​block. The upper cover covers the lower cover, and the snap-fit ​​block is inserted into the snap-fit ​​groove for snap-fit ​​engagement.

[0023] The housing is divided into an upper cover and a lower cover, and is assembled by the snap-fit ​​of the snap-fit ​​groove and the snap-fit ​​block. It has the advantages of simple structure and easy disassembly and assembly, which further facilitates the disassembly, assembly and maintenance of the charger. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a cross-sectional view of the present invention;

[0026] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0027] Figure 4 This is an exploded structural diagram of the housing, base, and circuit board assembly of this utility model from another perspective.

[0028] Figure 5 This is a top view illustrating the card slot of this utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the lower cover of this utility model;

[0030] Figure 7 This is a cross-sectional view illustrating the pad and connecting column of this utility model.

[0031] Explanation of reference numerals in the attached drawings: 1. Charger box; 11. Housing; 110. Receiving cavity; 111. Ventilation window; 112. Top cover; 113. Bottom cover; 12. Circuit board assembly; 13. Fan; 131. First power supply terminal; 14. Pad; 15. Connecting post; 16. Snap-fit ​​slot; 17. Snap-fit ​​block; 2. Input power cable; 3. Output power cable; 4. Second power supply terminal; 5. Quick-release port; 6. Cover plate; 7. Space; 8. Base; 81. Thermal adhesive groove; 82. Airflow guide grille; 9. Baffle; 91. Limiting block; 92. Limiting area. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-7 The present invention will be further described in detail with reference to specific embodiments, but these are not intended to limit the present invention:

[0033] Example 1

[0034] like Figures 1-7 As shown, a quick-release charger includes a charger box 1 and an input power cord 2 and an output power cord 3 extending outward from the charger box 1. The charger box 1 includes a housing 11, and a receiving cavity 110 is formed inside the housing 11. A circuit board assembly 12 and a fan 13 are disposed in the receiving cavity 110. The fan 13 is used for air exchange inside and outside the receiving cavity 110. A quick-connect first power terminal 131 is provided on the fan 13, and a quick-connect second power terminal 4 is provided in the receiving cavity 110. The first power terminal 131 and the second power terminal 4 are coupled to supply power to the fan 13. The circuit board assembly 12, the input power cord 2, the output power cord 3, and the second power terminal 4 are electrically connected.

[0035] Preferably, the housing 11 has a quick-release port 5 that communicates with the receiving cavity 110. A cover plate 6 is detachably provided at the quick-release port 5. The cover plate 6 controls the opening and closing of the quick-release port 5. The quick-release port 5 is used for the fan 13 to enter and exit the receiving cavity 110.

[0036] Preferably, there are two fans 13, one of which blows air into the receiving cavity 110 and the other blows air out of the receiving cavity 110.

[0037] Preferably, two fans 13 are disposed on a set of opposing inner sidewalls within the receiving cavity 110, and the corresponding inner sidewalls have ventilation windows 111, and the circuit board assembly 12 is disposed between the two fans 13.

[0038] Preferably, the receiving cavity 110 has a number of pads 14 and a number of connecting posts 15 for fixing the circuit board assembly 12. The pads 14 and connecting posts 15 support the lower end of the circuit board assembly 12, forming a space 7 for air flow on the upper and lower sides of the circuit board assembly 12.

[0039] In commercially available chargers, the circuit board assembly 12 is typically fixed directly to the bottom of the housing 110. In this case, the bottom surface of the circuit board assembly 12 is in contact with the housing 11, and the heat from the bottom surface of the circuit board assembly 12 is conducted to the outside through the housing 11, which does not provide a good heat dissipation effect. Elevating the circuit board assembly 12 allows for airflow from both the top and bottom surfaces, improving heat dissipation efficiency.

[0040] Preferably, the receiving cavity 110 also includes a base 8 for supporting the circuit board assembly 12. The upper end surface of the base 8 forms a thermally conductive adhesive groove 81 around the periphery. The thermally conductive adhesive groove 81 is used to install the circuit board assembly 12 and fill it with insulating thermally conductive adhesive. Fixing the circuit board assembly 12 onto the base 8 to form a modular design can improve assembly and replacement efficiency.

[0041] To prevent water vapor condensation during air circulation from causing short circuits in the circuit board assembly 12, in this embodiment, the base 8 serves to fix the circuit board assembly 12 and also provides a thermally conductive adhesive groove 81 for filling with insulating thermally conductive adhesive to insulate and seal the circuit board assembly 12. This prevents water vapor from entering the receiving cavity 110 and affecting the circuit board assembly 12, while also providing uniform heat distribution to the entire circuit board assembly 12.

[0042] Preferably, the lower end face of the base 8 has several flow guide grilles 82, which extend along the flow direction of the gas in the space 7.

[0043] Preferably, a baffle 9 and a limiting block 91 are provided in the receiving cavity 110. A limiting area 92 is formed between the baffle 9 and the inner wall of the housing 11. The quick-release port 5 is directly opposite the limiting area 92. The second power supply terminal 4 and the limiting block 91 are located in the limiting area 92. The fan 13 is placed in the limiting area 92 and is in contact with the baffle 9. The bottom of the fan 13 is in contact with the top of the limiting block 91.

[0044] Preferably, the housing 11 includes an upper cover 112 and a lower cover 113, with a quick-release port 5 disposed on the upper cover 112, and a baffle 9 and a limiting block 91 disposed inside the lower cover 113.

[0045] The upper cover 112 has a snap-fit ​​groove 16, and the lower cover 113 has a snap-fit ​​block 17. The upper cover 112 covers the lower cover 113, and the snap-fit ​​block 17 is inserted into the snap-fit ​​groove 16 and snap-fits.

[0046] Specifically, such as Figures 1-3 As shown, there are two types of fans 13. The number of the first power terminal 131, the second power terminal 4, the quick-release port 5, the cover plate 6, and the baffle 9 corresponds one-to-one with the number of fans 13.

[0047] Ventilation windows 111 are integrally formed on the left and right ends of the housing 11. The baffle 9 is U-shaped, with its lower end integrally formed on the bottom of the lower cover 113 and its side end integrally formed on the inner wall of the lower cover 113. The baffle 9 encloses the adjacent ventilation windows 111 to form a limiting area 92. A ventilation opening communicating with the limiting area 92 is provided on the side of the baffle 9 facing the ventilation window 111. The ventilation opening is wider at the top and narrower at the bottom.

[0048] The first power supply terminal 131 is located at the lower end of the fan 13, and the two second power supply terminals 4 are respectively fixed at the bottom of the two limiting areas 92. The first power supply terminal 131 and the second power supply terminal 4 can be connected and coupled by plug and socket. In the embodiment of this application, the first power supply terminal 131 is a socket and the second power supply terminal 4 is a plug.

[0049] In one embodiment, the first power terminal 131 conducts electricity after contacting the second power terminal 4. The two can also adopt a contact structure to conduct electricity through contact.

[0050] In another embodiment, the first power terminal 131 and the second power terminal 4 can each employ two coils. When the second power terminal 4 is energized, a magnetic field is formed, and current is generated in the first power terminal 131 through electromagnetic induction. This wireless power supply avoids potential safety hazards caused by poor contact in contact-based electrical conduction.

[0051] More specifically, such as Figures 1-3 As shown in this embodiment, the cover plate 6 has buckles integrally formed at both ends. The buckles are arranged with the upper part being larger than the lower part. In the natural state, the upper end of the buckle extends outward.

[0052] When installing the fan 13 inside the housing 11, first align the lower end of the fan 13 with the limiting area 92, then place the fan 13 into the limiting area 92, and insert the second power terminal 4 into the first power terminal 131 for coupling connection. Then, close the cover plate 6 into the quick-release port 5. At this time, the upper end of the fan 13 is inserted between the adjacent clips, and the outer wall of the clip is squeezed inward by the inner wall of the quick-release port 5. When the cover plate 6 moves into the quick-release port 5 until the outer surface of the cover plate 6 is flush with the outer surface of the upper cover 112, the clip extends outward and abuts against the inner wall of the quick-release port 5, thus completing the closure of the quick-release port 5 by the cover plate 6.

[0053] In addition to being installed at the quick-release port 5 by snap-on detachment, the cover plate 6 can also be fixed at the quick-release port 5 by magnet or screw.

[0054] When the fan 13 needs to be cleaned or repaired, the cover plate 6 can be removed outwards to open the quick-release port 5. The repair personnel can then remove the fan 13 from the housing 11 through the quick-release port 5 for repair or replacement.

[0055] More specifically, such as Figures 2-7 As shown in the embodiment of this application, there are two pads 14 and two connecting posts 15. The pads 14 and the connecting posts 15 are distributed on opposite sides of the receiving cavity 110. One side of the pad 14 is attached to the outer wall of the adjacent baffle 9.

[0056] The bottom of the lower cover 113 has a through hole, the top inner surface of the upper cover 112 has an integrally formed limit post, and the base 8 has an integrally formed docking post. The limit post and docking post extend along the height direction of the shell 11, and the number of through holes and docking posts corresponds one-to-one with the number of connecting posts 15. The connecting posts 15 and docking posts are hollow inside, and the docking post is sleeved on the upper part of the corresponding connecting post 15. The through hole is directly opposite to the lower part of the connecting post 15 and communicates with the connecting post 15.

[0057] When assembling the circuit board assembly 12 and the base 8 into the housing 11, first place one side of the base 8 on the upper end of the pad 14, then fit the mating post onto the upper part of the connecting post 15. Next, pass the screw through the through hole and tighten it into the connecting post 15 and the mating post, thereby fixing the base 8 onto the lower cover 113. Then, place the circuit board assembly 12 into the thermally conductive adhesive groove 81 and inject insulating thermally conductive adhesive into the thermally conductive adhesive groove 81. After the insulating thermally conductive adhesive has solidified, close the upper cover 112 onto the lower cover 113.

[0058] After the upper cover 112 is placed on the lower cover 113, the lower end of the limiting post abuts against the base 8, thereby further pressing the base 8 against the lower cover 113 and improving the stability of the base 8. In this embodiment, the upper cover 112 and the lower cover 113 are disassembled and assembled through the snap-fit ​​engagement of the snap-fit ​​groove 16 and the snap-fit ​​block 17.

[0059] The circuit board assembly 12 is suspended in the receiving cavity 110 via the pad 14, connecting post 15, and mating post, forming spaces 7 on the upper and lower sides of the circuit board assembly 12. When the fan 13 is working, one fan 13 draws outside air into the receiving cavity 110 through the vent 111. The outside air flows through the upper and lower sides of the circuit board assembly 12 and is exhausted outside the receiving cavity 110 by the other fan 13 through the vent 111, thereby enabling simultaneous heat dissipation at the upper and lower ends of the circuit board assembly 12 when it is working.

[0060] The lower surface of the base 8 is also integrally formed with multiple airflow guide grilles 82, which are spaced apart along the width direction of the base 8 and extend along the length direction of the base 8. When air flows in the space 7, the airflow guide grilles 82 can guide the air flowing into the receiving cavity 110, further improving the heat dissipation effect on the circuit board assembly 12.

[0061] In summary, the above are merely preferred embodiments of this utility model. All equivalent variations and modifications made within the scope of the patent application of this utility model shall fall within the scope of this utility model.

Claims

1. A quick-release charger, comprising a charger housing (1) and an input power cord (2) and an output power cord (3) extending outward from the charger housing (1), characterized in that, The charger box (1) includes a housing (11) with a cavity (110) inside. A circuit board assembly (12) and a fan (13) are disposed in the cavity (110). The fan (13) is used for air exchange between the inside and outside of the cavity (110). A quick-connect first power terminal (131) is provided on the fan (13). A quick-connect second power terminal (4) is provided in the cavity (110). The first power terminal (131) and the second power terminal (4) are coupled to supply power to the fan (13). The circuit board assembly (12), the input power line (2), the output power line (3), and the second power terminal (4) are electrically connected.

2. A quick-release charger according to claim 1, characterized in that: The housing (11) has a quick-release port (5) that communicates with the receiving cavity (110). A cover plate (6) is detachably provided at the quick-release port (5). The cover plate (6) controls the opening and closing of the quick-release port (5). The quick-release port (5) is used for the fan (13) to enter and exit the receiving cavity (110).

3. A quick-release charger according to claim 1, characterized in that: The number of fans (13) is set to two, one of which blows air into the receiving cavity (110) and the other blows air out of the receiving cavity (110).

4. A quick-release charger according to claim 3, characterized in that: Two fans (13) are disposed on a set of opposing inner sidewalls within the receiving cavity (110), and the corresponding inner sidewalls have ventilation windows (111). The circuit board assembly (12) is disposed between the two fans (13).

5. A quick-release charger according to claim 1, characterized in that: The receiving cavity (110) contains several pads (14) and several connecting posts (15) for fixing the circuit board assembly (12). The pads (14) and the connecting posts (15) support the lower end of the circuit board assembly (12) and form a space (7) for air flow on the upper and lower sides of the circuit board assembly (12).

6. A quick-release charger according to claim 5, characterized in that: The cavity (110) also has a base (8) for supporting the circuit board assembly (12). The upper surface of the base (8) forms a thermally conductive adhesive groove (81) around the circumference. The thermally conductive adhesive groove (81) is used to install the circuit board assembly (12) and fill it with insulating thermally conductive adhesive.

7. A quick-release charger according to claim 6, characterized in that: The lower end face of the base (8) has several flow guide grilles (82), which extend along the flow direction of the gas in the space (7).

8. A quick-release charger according to claim 2, characterized in that: The cavity (110) is provided with a baffle (9) and a limiting block (91). A limiting area (92) is formed between the baffle (9) and the inner wall of the housing (11). The quick-release port (5) is directly opposite the limiting area (92). The second power terminal (4) and the limiting block (91) are located in the limiting area (92). The fan (13) is placed in the limiting area (92) and is in contact with the baffle (9). The bottom of the fan (13) is in contact with the top of the limiting block (91).

9. A quick-release charger according to claim 8, characterized in that: The housing (11) includes an upper cover (112) and a lower cover (113). The quick-release port (5) is provided on the upper cover (112), and the baffle (9) and the limiting block (91) are provided inside the lower cover (113). The upper cover (112) has a snap-fit ​​groove (16), and the lower cover (113) has a snap-fit ​​block (17). The upper cover (112) covers the lower cover (113), and the snap-fit ​​block (17) is inserted into the snap-fit ​​groove (16) and snap-fits.

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