Portable vehicle charger

Abstract

The utility model provides a portable vehicle charger, which comprises a bottom plate, a shell, a circuit board assembly, a plurality of radiating fins and a fan, the shell is arranged on the bottom plate and provided with a first surface and a second surface which are opposite. The circuit board assembly is arranged on the second surface of the shell and comprises a circuit board body and a plurality of power elements arranged on the circuit board body. The radiating fins are vertically arranged on the first surface. The fan is close to the first surface, and the radiating fins surround the periphery of the fan. Through the above design, the air flow generated by the fan flows along the air flow path formed by the heat radiation fins, and heat generated by the plurality of power elements can be rapidly and well discharged out of the housing. Meanwhile, the heat dissipation fins are arranged around the peripheral side of the fan, airflow paths are provided in all the peripheral side directions, and the heat dissipation effect is further improved. Therefore, the portable vehicle charger provided by the utility model has a good heat dissipation effect.

Description

Technical Field

[0001] This utility model relates to a charger, and more particularly to a portable vehicle charger. Background Technology

[0002] Certain types of electric vehicles, such as electric two-wheelers (E2W), require portable chargers designed to meet user needs. However, poor heat dissipation is a significant bottleneck for portable chargers. Although some portable chargers are designed with heat dissipation structures, insufficient cooling efficiency still prevents them from operating at higher power levels.

[0003] The primary reason for poor cooling efficiency is the disorder of airflow. Currently, portable chargers for electric two-wheelers often include fans and structural channels to allow airflow through their outer surfaces. However, these surfaces are directly exposed to the environment. Due to the disorder of airflow in the environment, the airflow direction can change every second, including directions opposite to the cooling airflow from the portable charger. This means that designing more structural airflow channels and any external structures covering these channels to minimize disordered flow has become a critical and urgent problem to solve. Utility Model Content

[0004] This invention provides a portable vehicle charger with good heat dissipation.

[0005] In one embodiment of this utility model, the portable vehicle charger includes a base plate, a housing, a circuit board assembly, multiple heat dissipation fins, and a fan. The housing is disposed on the base plate and has opposing first and second surfaces. The circuit board assembly is disposed on the second surface of the housing and includes a circuit board body and multiple power components disposed on the circuit board body. The heat dissipation fins are upright disposed on the first surface. The fan is close to the first surface, and the heat dissipation fins surround the periphery of the fan.

[0006] In one embodiment of the present invention, the portable vehicle charger further includes a cover that covers at least a portion of the housing, and multiple airflow paths are formed between the cover and the heat dissipation fins.

[0007] In one embodiment of the present invention, the aforementioned heat dissipation fins include a plurality of first fins, which are disposed on opposite first and second sides of a first surface, and a cover covers the first fins.

[0008] In one embodiment of the present invention, the heat dissipation fins described above further include a plurality of second fins. These second fins are disposed between a first side and a second side of the first surface. Each of these second fins includes a main body and a bent portion. The main body is adjacent to the fan and is covered by a cover. The bent portion bends from the main body and extends toward the edge of the first surface.

[0009] In one embodiment of the present invention, the cover includes a top wall and two side walls. The top wall has an airflow inlet and outlet, which are aligned with a fan. The two side walls are respectively connected to the opposite edges of the top wall.

[0010] In one embodiment of the present invention, the inner wall surface of the top wall of the cover is in contact with the heat dissipation fins.

[0011] In one embodiment of the present invention, the inner wall surface of the top wall of the cover is close to the heat dissipation fins.

[0012] In one embodiment of the present invention, a space is formed between the second surface and the side of the circuit board body closer to the second surface, and the sealant is filled in the space to at least cover the circuit board body.

[0013] In one embodiment of the present invention, there is a gap between the fan and the first surface.

[0014] In one embodiment of the present invention, the portable vehicle charger further includes a plurality of support parts, which are connected to several of the heat dissipation fins and support the fan in the direction of gravity.

[0015] Based on the above, in the portable vehicle charger of this invention, multiple heat dissipation fins are disposed on the first surface of the housing, a fan is disposed close to the first surface, and a circuit board assembly is disposed on the second surface of the housing. The airflow generated by the fan flows along the airflow path formed by the heat dissipation fins, which can quickly and effectively dissipate the heat generated by the multiple power components on the circuit board assembly to the outside of the housing. At the same time, the heat dissipation fins are arranged around the periphery of the fan, providing airflow paths in each circumferential direction, thus further improving the heat dissipation effect of the portable vehicle charger.

[0016] To make the above-mentioned features and advantages of this utility model more apparent and understandable, specific embodiments are described below, and detailed descriptions are provided in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1A This is a schematic diagram of a portable vehicle charger according to an embodiment of the present invention;

[0018] Figure 1B yes Figure 1A An exploded view of the components of a portable vehicle charger.

[0019] Figure 2 yes Figure 1A A cross-sectional schematic diagram of a portable vehicle charger.

[0020] Figure 3 yes Figure 1A A diagram showing the portable vehicle charger with its cover removed;

[0021] Figure 4 yes Figure 3 A top view of a portable vehicle charger;

[0022] Figure 5 yes Figure 1A Another cross-sectional view of the portable vehicle charger.

[0023] Figure 6 This is a schematic diagram of a portable vehicle charger according to another embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures

[0025] 10, 10a: Portable vehicle charger;

[0026] 110: Base plate;

[0027] 120, 120a: Shell;

[0028] 121: First side;

[0029] 122: Second side;

[0030] 123: Third side;

[0031] 124: Fourth side;

[0032] 126: Bottom;

[0033] 130: Circuit board assembly;

[0034] 132: Circuit board body;

[0035] 134: Power components;

[0036] 136: Opposite side;

[0037] 140, 140a: Heat dissipation fins;

[0038] 142: First fin;

[0039] 1421: Main body;

[0040] 1422: Extension;

[0041] 1423: Export Guidance Department;

[0042] 144: Second fin;

[0043] 1441: Main body;

[0044] 1442: Bend;

[0045] 150: Fan;

[0046] 160, 160a: Cover body;

[0047] 162: Top wall;

[0048] 164: Side wall;

[0049] 166: Inner wall surface;

[0050] 170: Sealing;

[0051] 191: Input terminal;

[0052] 192: Output terminal;

[0053] 193: Handle;

[0054] 194: Indicator light;

[0055] 195: Padding;

[0056] A: Storage space;

[0057] AC: Airflow inlet and outlet;

[0058] BE: Bottom edge;

[0059] C1: First airflow path;

[0060] C2: Second airflow path;

[0061] E: Edge;

[0062] EX: Airflow outlet;

[0063] G: Gap;

[0064] P: Support section;

[0065] S1: First surface;

[0066] S2: Second surface;

[0067] S3: Side surface;

[0068] T: Upper surface. Detailed Implementation

[0069] Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same element reference numerals are used in the drawings and description to denote the same or similar parts.

[0070] Figure 1A This is a schematic diagram of a portable vehicle charger according to an embodiment of the present invention. Figure 1B yes Figure 1A An exploded view of the components of a portable vehicle charger. Figure 2 yes Figure 1A A cross-sectional view of a portable vehicle charger. For ease of explanation, Figure 2 The direction of airflow is shown by a bold arrow.

[0071] Please see Figures 1A to 2 In this embodiment, the portable vehicle charger 10 is suitable for charging electric vehicles, such as electric two-wheelers (E2W). The portable vehicle charger 10 includes a base plate 110. Figure 1B ), housing 120, circuit board assembly 130 ( Figure 1B ), multiple heatsink fins 140 and fan 150 ( Figure 1B ).

[0072] The housing 120 can be the exterior component of the portable vehicle charger 10, and has an input terminal 191 and an output terminal 192. The input terminal 191 is connected to an external power source. The alternating current from the external power source can be input into the portable vehicle charger 10 through the input terminal 191 and converted into direct current, and then output to the electric vehicle through the output terminal 192 of the portable vehicle charger 10 to charge the electric vehicle.

[0073] In this embodiment, there is a good sealing connection between the input terminal 191 and the housing 120 and between the output terminal 192 and the housing 120, so that the housing 120 achieves waterproof and dustproof performance of, for example, or better than IP 68, and thus has excellent waterproof and dustproof effect.

[0074] like Figure 2 As shown, the bottom 126 of the housing 120 is disposed on the base plate 110. The housing 120 has a first surface S1 and a second surface S2 facing each other. The second surface S2 faces the base plate 110 and is located between the first surface S1 and the bottom 126. An accommodating space A is formed between the second surface S2 and the base plate 110, and the circuit board assembly 130 is located in the accommodating space A.

[0075] Furthermore, the circuit board assembly 130 is disposed on the second surface S2 of the housing 120 and includes a circuit board body 132 and a plurality of power components 134. The circuit board body 132 is fixed to the second surface S2, for example, by a locking method, but the fixing method is not limited thereto. In this embodiment, the power components 134 include transformers, inductors, transistors, and diodes, and are disposed on the side of the circuit board body 132 facing the base plate 110. Of course, the types of power components 134 are not limited thereto.

[0076] In another embodiment, a circuit board assembly 130 is disposed on the second surface S2 of the housing 120 and includes a circuit board body 132 and a plurality of power components 134. The circuit board body 132 is fixed to the second surface S2 in a long-distance locking manner. In this embodiment, the power components 134 include at least one transformer, inductor, transistor, and diode, and are disposed on the side of the circuit board body 132 facing the second surface S2. The minimum distance between the circuit board body 132 and the second surface S2 is equal to the maximum height of the power components 134.

[0077] In this embodiment, the portable vehicle charger 10 further includes an encapsulant 170 (shown as dots), and the heat transfer coefficient (HTC) of the encapsulant 170 is higher than or equal to that of air. In this embodiment, a space is formed between the second surface S2 and the opposite side 136 of the circuit board body 132 away from the second surface S2, and the encapsulant fills this space to at least cover the circuit board body 132. The encapsulant 170 is thermally coupled to the circuit board assembly 130 and the housing 120. When the portable vehicle charger 10 is in operation, the heat generated by the power components 134 of the circuit board assembly 130 can be conducted to the housing 120 and the base plate 110 through the encapsulant 170, thereby improving the heat dissipation effect. In addition, the heat conducted to the housing 120 can be quickly exhausted to the external environment by the airflow generated by the fan 150 through the heat dissipation fins 140, so that the portable vehicle charger 10 is effectively cooled.

[0078] In another embodiment, the sealant 170 completely fills the accommodating space A. The sealant 170 is thermally coupled to the circuit board assembly 130, the power element 134, and the housing 120.

[0079] The fan 150 and the heat sink 140 will be explained below. Figure 3 yes Figure 1A A diagram showing the portable vehicle charger with its cover removed. Figure 4 yes Figure 3 A top view of a portable vehicle charger. To clearly show the arrangement of the heat sink fins 140, Figure 4 The handle 193, input terminal 191, and output terminal 192 are hidden.

[0080] Please see Figure 3 and Figure 4 In this embodiment, the fan 150 is disposed close to the first surface S1. The heat dissipation fins 140 are disposed upright on the first surface S1 and surround the periphery of the fan 150.

[0081] Specifically, the heat dissipation fins 140 include a plurality of first fins 142 and a plurality of second fins 144, wherein a first airflow path C1 is formed between two adjacent first fins 142. Figure 4 A second airflow path C2 is formed between two adjacent second fins 144. Figure 4 The first fin 142 is erected on the opposite first side 121 of the first surface S1. Figure 4 ) and the second side 122 ( Figure 4 Each first fin 142 includes a main body 1421, an extension 1422, and an outlet guide 1423.

[0082] The main body 1421 is located on the first surface S1 and adjacent to the fan 150. The surface of the housing 120 between the first surface S1 and the bottom 126 is defined as the side surface S3. An extension 1422 is vertically connected to the main body 1421 and extends along the side surface S3 of the housing 120 to the bottom 126. An outlet guide 1423 is vertically connected to the extension 1422 and extends to the bottom edge BE of the bottom 126. An airflow outlet EX is formed between adjacent outlet guides 1423.

[0083] On the other hand, such as Figure 4 As shown, the second fin 144 is erected between the first side 121 and the second side 122, that is, located on the opposite third side 123 and fourth side 124 of the first surface S1, and each second fin 144 includes a main body portion 1441 and a bent portion 1442.

[0084] In this embodiment, the main body 1441 of the second fin 144 is adjacent to the fan 150 and perpendicular to the main body 1421 of the first fin 142. The main body 1421 of the first fin 142 and the main body 1441 of the second fin 144 surround the periphery of the fan 150.

[0085] The bent portion 1442 of the second fin 144 bends from the main body 1441 and extends toward the edge E of the first surface S1, wherein the edge E is located at the corner of the third side 123 and the fourth side 124 or the first surface S1. Figure 3 As shown, some of the bends 1442 of the second fins 144 can further extend along the side surface S3 of the housing 120 to the bottom 126 of the housing 120.

[0086] In this embodiment, the airflow generated by the fan 150 can flow along the heat sink 140 to dissipate heat from the circuit board assembly 130 ( Figure 2 The heat generated is quickly and effectively dissipated outside the housing 120. Furthermore, since the heat dissipation fins 140 surround the periphery of the fan 150, providing airflow paths in all circumferential directions, the heat dissipation effect of the portable vehicle charger 10 is improved. The airflow cooling design of this embodiment will be further explained below.

[0087] Figure 5 yes Figure 1AAnother cross-sectional view of a portable vehicle charger. For ease of illustration, Figure 5 The airflow direction is shown as a bold arrow. See also... Figure 5 , Figure 1A and Figure 2 In this embodiment, the portable vehicle charger 10 also includes a cover 160.

[0088] The cover 160 includes a top wall 162 and two side walls 164. The top wall 162 has an airflow inlet and outlet AC, which are aligned with the fan 150. The two side walls 164 are respectively connected to the opposite edges of the top wall 162. The cover 160 covers at least a portion of the housing 120, specifically, the cover 160 covers a portion of the first surface S1 and a portion of the side surface S3 of the housing 120. The top wall 162 of the cover 160 covers the main body 1421 of the first fin 142 and the main body 1441 of the second fin 144. Figure 2 The two side walls 164 of the cover 160 cover the extension 1422 of the first fin 142 to enhance the airflow path of the heat dissipation fin 140.

[0089] Please see Figure 5 and Figure 4 When outside air enters the fan 150 through the airflow inlet AC, part of the airflow generated by the fan 150 can flow along the first airflow path C1. Specifically, this airflow flows along the main body 1421 of the first fin 142, and is guided by the side wall 164 of the cover 160 to flow along the side surface S3 of the housing 120, and finally exits from the airflow outlet EX between the outlet guides 1423.

[0090] In other words, the side wall 164 of the cover 160 cooperates with the extension 1422 of the first fin 142 to form an airflow path on the side surface S3 of the housing 120, so that a portion of the airflow is discharged along the side surface S3 of the housing 120, thereby achieving the effect of rapid heat dissipation.

[0091] Please see Figure 2 and Figure 4 On the other hand, another portion of the airflow generated by the fan 150 can flow along the second airflow path C2. Specifically, this portion of the airflow flows along the main body 1441 of the second fin 144 and is guided by the bend 1442 to the edge E of the first surface S1. Figure 4 ) or extend to the bottom 126 of the housing 120 ( Figure 3 The heat is then released into the external environment, achieving rapid heat dissipation.

[0092] In existing portable vehicle chargers with heat dissipation fins, the heat dissipation fins are typically only along a single axis (e.g., Figure 4The third side 123 and the fourth side 124 of the fan 150 have limited heat dissipation. In contrast, the portable vehicle charger 10 of this embodiment has heat dissipation fins 140 on each circumferential direction of the fan 150, including... Figure 4 The first fin 142 located on the first side 121 and the second side 122, and the second fin 144 located on the third side 123 and the fourth side 124, can provide multiple airflow paths for the airflow generated by the fan 150, increasing the number of heat dissipation paths and reducing the occurrence of disordered airflow, thereby improving the overall heat dissipation effect.

[0093] In addition, the sidewall 164 of the cover 160 not only helps to form a lateral airflow path on the side surface S3 of the housing 120 to improve heat dissipation, but also makes it easy for users to hold, so as to avoid users feeling uncomfortable or even burned from contacting the high-temperature housing 120 and heat dissipation fins 140.

[0094] Please return Figure 5 In this embodiment, the inner wall surface 166 of the top wall 162 of the cover 160 is close to the upper surface T of the heat dissipation fins 140, which helps to improve the uniformity of airflow and make the airflow more stable. In another embodiment, the inner wall surface 166 of the top wall 162 of the cover 160 may contact the upper surface T.

[0095] In this embodiment, the portable vehicle charger 10 also includes a plurality of support portions P. The support portions P are connected to several of the heat dissipation fins 140, for example, to the main body 1421 of the first fin 142 and the main body 1441 of the second fin 144. Figure 2 The fan 150 can be supported along the gravity axis so that the fan 150 is preferably positioned close to the first surface S1 of the housing 120 via the support P.

[0096] Furthermore, in this embodiment, the aforementioned support portion P creates a gap G between the fan 150 and the first surface S1 to prevent the fan 150 from weakening the airflow driving effect due to being too close to the first surface S1 of the housing 120.

[0097] In another embodiment, the fan 150 may be a frameless fan, meaning that the airflow generated by the fan 150 can be blown out from the periphery of the fan 150, so there is no need for a gap G between the fan 150 and the first surface S1 of the housing 120. Therefore, the fan 150 can directly contact the first surface S1, thereby reducing the thickness of the portable vehicle charger 10.

[0098] Please return Figure 1BIn this embodiment, the portable vehicle charger 10 also includes a handle 193. The handle 193 is disposed in the housing 120 and can be gripped by a user to facilitate the user's movement of the portable vehicle charger 10. In this embodiment, the portable vehicle charger 10 also includes an indicator light 194. The indicator light 194 is assembled in the housing 120 and electrically connected to the circuit board body 132 to indicate the current usage status of the portable vehicle charger 10.

[0099] In this embodiment, the portable vehicle charger 10 also includes a pad 195 ( Figure 2 The material of the pad 195 may be, for example, rubber, but is not limited to this. The pad 195 is located on the side of the base plate 110 away from the housing 120 to prevent the hot base plate 110 from contacting the user and causing discomfort.

[0100] Figure 6 This is a schematic diagram of a portable vehicle 10 according to another embodiment of the present invention. Figure 6 Implementation examples and Figure 1A The main difference in the embodiments is that, Figure 6 The power ratio of the portable vehicle charger 10A Figure 1A The portable vehicle charger 10 has a high power output.

[0101] For example, the portable vehicle charger 10a in this embodiment has a power of 1200 W, while Figure 1A The portable vehicle charger 10 has a power rating of, for example, 450 W. Due to its higher power, the portable vehicle charger 10a has a larger size (including the dimensions of the cover 160a and the housing 120a) and more heat dissipation fins 140a to enable rapid and efficient heat dissipation. The remaining components and configurations of the portable vehicle charger 10a are the same as or similar to those of the aforementioned portable vehicle charger 10, and will not be repeated here.

[0102] In summary, in the portable vehicle charger of this invention, multiple heat dissipation fins are disposed on the first surface of the housing, a fan is disposed close to the first surface, and a circuit board assembly is disposed on the second surface of the housing. The multiple heat dissipation fins include multiple first fins and multiple second fins, which, together with the cover, form multiple first airflow paths and multiple second airflow paths. The airflow generated by the fan flows along the first airflow paths and multiple second airflow paths, quickly and effectively dissipating the heat generated by the multiple power components on the circuit board assembly to the outside of the housing. Simultaneously, the first and second fins are arranged around the fan, providing airflow paths in each circumferential direction, thus further improving the heat dissipation effect of the portable vehicle charger.

[0103] It should be understood by anyone skilled in the art that various modifications and refinements can be made to the disclosed embodiments without departing from the scope and spirit of this utility model. Therefore, the scope of protection claimed by this utility model shall be determined by the content defined in the claims.

Claims

1. A portable vehicle charger, characterized in that, include: Base plate; The housing is disposed on the base plate and has opposing first and second surfaces; Multiple heat dissipation fins are vertically disposed on the first surface; A fan is disposed close to the first surface, wherein the plurality of heat dissipation fins surround the periphery of the fan; as well as A circuit board assembly is disposed on the second surface of the housing, and includes a circuit board body and a plurality of power components disposed on the circuit board body.

2. The portable vehicle charger according to claim 1, characterized in that, It also includes a cover that covers at least a portion of the housing, and the cover forms multiple airflow paths between the cover and the plurality of heat dissipation fins.

3. The portable vehicle charger according to claim 2, characterized in that, The plurality of heat dissipation fins include a plurality of first fins, which are disposed on opposite first and second sides of the first surface, and the cover covers the plurality of first fins.

4. The portable vehicle charger according to claim 3, characterized in that, The plurality of heat dissipation fins also include a plurality of second fins disposed between the first side and the second side of the first surface. Each of the plurality of second fins includes a main body portion and a bent portion. The main body portion is adjacent to the fan and is covered by the cover. The bent portion bends from the main body portion and extends toward the edge of the first surface.

5. The portable vehicle charger according to claim 2, characterized in that, The cover includes a top wall and two side walls. The top wall has an airflow inlet and outlet, which are aligned with the fan. The two side walls are respectively connected to the opposite edges of the top wall.

6. The portable vehicle charger according to claim 5, characterized in that, The inner wall surface of the top wall of the cover contacts the plurality of heat dissipation fins.

7. The portable vehicle charger according to claim 5, characterized in that, The inner wall surface of the top wall of the cover is close to the plurality of heat dissipation fins.

8. The portable vehicle charger according to claim 1, characterized in that, A space is formed between the second surface and the side of the circuit board body closer to the second surface, and the sealant is filled in the space to at least cover the circuit board body.

9. The portable vehicle charger according to claim 1, characterized in that, There is a gap between the fan and the first surface.

10. The portable vehicle charger according to claim 1, characterized in that, It also includes multiple support parts, which are connected to several of the multiple heat dissipation fins and support the fan along the direction of gravity.

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