High-reliability battery charger with heat dissipation structure

Abstract

The utility model discloses a high-reliability battery charger with a heat dissipation structure, which comprises a battery charger body, an annular check ring arranged on the top surface of the battery charger body, an electric fan arranged at the top of the battery charger body, and a plurality of heat dissipation fin plates arranged around the annular check ring at intervals at the top of the battery charger body. A heat dissipation channel is formed between every two adjacent heat dissipation fin plates, and the annular check ring is provided with a through opening corresponding to each heat dissipation channel. Heat dissipation protruding blocks are arranged on the two sides of each heat dissipation fin plate and are each of a triangular wing type structure. When the battery charger works, air flows in the top space of the annular check ring and contacts with the heat dissipation fin plates through the through holes and the heat dissipation channels for heat dissipation; as the heat dissipation bumps are arranged on the two sides of the heat dissipation fin plates, the air flow generates horizontal and vertical shunting motion after being randomly shunted for multiple times, so that the air flow is in full contact with the heat dissipation fin plates, rapid heat dissipation is facilitated, the service life of the charger is prolonged, and the charger is more durable and reliable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile accessories, and particularly relates to a battery charger with high reliability and a heat dissipation structure. BACKGROUND

[0002] A battery charger, also known as a vehicle-mounted charger, is a charger fixedly installed on an electric vehicle, uses an alternating current power supply as input, and outputs direct current to directly charge a power battery, thereby realizing safe and automatic charging of the power battery of the electric vehicle.

[0003] Since the vehicle-mounted battery charger generates a large amount of heat during operation, the heat inside the charger needs to be quickly dissipated, otherwise the charging efficiency and service life of the charger will be affected.

[0004] The current charger has heat dissipation fins arranged on the surface of the charger, which are used to expand the heat dissipation surface in contact with air, but air cannot uniformly flow and contact between the heat dissipation fins, the heat dissipation effect is general, the service life of the charger is affected, the replacement interval is long, and the reliability and durability are poor. UTILITY MODEL CONTENTS

[0005] The utility model provides a battery charger with high reliability and a heat dissipation structure, air flows in the space at the top of the annular baffle, contacts the heat dissipation fin plate through each heat dissipation channel through the through hole, and is heat dissipated, since the heat dissipation fin plate is provided with heat dissipation protrusions on both sides, the air flow is randomly divided for multiple times, horizontal and vertical flow movements are generated, the air flow and the heat dissipation fin plate are fully contacted, and rapid heat dissipation is beneficial, so that the problems in the background art are solved.

[0006] To achieve the above object, the utility model provides the following technical scheme: a battery charger with high reliability and a heat dissipation structure, comprising a battery charger body, an annular baffle is arranged at the center of the top surface of the battery charger body, a motor fan is arranged in the annular baffle at the top of the battery charger body, the annular baffle is provided with a hole through which the line of the motor fan passes, a plurality of heat dissipation fin plates are arranged at the top of the battery charger body and are arranged at intervals around the annular baffle, the heat dissipation fin plates are made of high-heat-dissipation material, heat dissipation channels are formed between adjacent heat dissipation fin plates, and the annular baffle is provided with a through hole corresponding to each heat dissipation channel.

[0007] Preferably, a protective net for shielding the motor fan is arranged on the annular baffle.

[0008] Preferably, the through hole extends along the height of the heat dissipation fin plate, so that the cross section is rectangular.

[0009] Preferably, the heat dissipation fin plate is provided with heat dissipation protrusions on both sides, the heat dissipation protrusions are all in the form of delta wings, the delta wings are outwardly arc-shaped protrusions on both sides, and the tail portions are inwardly arc-shaped depressions.

[0010] Preferably, the heat dissipation bumps include first bumps with head ends downward and second bumps with head ends upward, the first bumps are arranged in multiple rows and multiple columns in a matrix mode, the second bumps are arranged in multiple rows and multiple columns in a matrix mode, multiple columns of the first bumps and the second bumps are arranged in an alternating and staggered mode, each row of gaps forms a first flow channel with a wave-shaped trend, and each column of gaps forms a second flow channel in a vertical direction.

[0011] Preferably, the heat dissipation fins are provided with multiple through holes penetrating through two sides, and the through holes are arranged on the flow channels.

[0012] Preferably, the heat dissipation bumps on the two sides are arranged in a staggered mode, the through holes on the two sides of the heat dissipation fins have different diameters, and the through holes in adjacent columns have different directions.

[0013] Preferably, the battery charger body is provided with a heat dissipation column in the heat dissipation channel, and the heat dissipation column has a cross section in a delta wing shape.

[0014] Compared with the prior art, the battery charger has the beneficial effects that:

[0015] 1. The air in the top space of the annular check ring flows through the through holes and contacts the heat dissipation fins in the heat dissipation channels to dissipate heat. Because the heat dissipation bumps are arranged on the two sides of the heat dissipation fins, the air flow is randomly divided multiple times to generate horizontal and vertical flow movements, so that the air flow fully contacts the heat dissipation fins, heat dissipation is fast, the service life of the charger is prolonged, and the charger is more durable and reliable.

[0016] 2. Multiple through holes are arranged on the two sides of the heat dissipation fins to realize convection of the air flows on the two sides. The design of different hole diameters on the two sides facilitates the air flow to flow in from the large hole end, and the directions of the through holes in adjacent columns are different, so that the convection is further strengthened, efficient heat dissipation is realized, the service life of the charger is prolonged, and the charger is more durable and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a top view structural schematic diagram of the utility model;

[0018] Figure 2 It is a sectional view structural schematic diagram of the annular check ring of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the heat dissipation fins and the heat dissipation bumps of the utility model;

[0020] Figure 4 It is Figure 3 It is a structural schematic diagram of the other side of the heat dissipation fins.

[0021] In the figure: 1, battery charger body; 2, annular blocking ring; 3, electric fan; 4, hole; 5, heat dissipation fin plate; 6, heat dissipation channel; 7, through port; 8, protective net; 9, heat dissipation bump; 10, first bump; 11, second bump; 12, first flow channel; 13, second flow channel; 14, through hole; 15, heat dissipation column. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please refer to Figures 1-4 The utility model provides a kind of battery charger with high reliability and heat dissipation structure, including battery charger body 1, the top center of the battery charger body 1 is equipped with annular blocking ring 2, the battery charger body 1 top is equipped with electric fan 3 in the annular blocking ring 2, the annular blocking ring 2 is equipped with the hole 4 for the line of electric fan 3 to pass through, the battery charger body 1 is equipped with multiple heat dissipation fin plates 5 around the annular blocking ring 2 and is arranged at intervals in top, the heat dissipation fin plate 5 is high heat dissipation material, the heat dissipation channel 6 is formed between adjacent heat dissipation fin plate 5, the annular blocking ring 2 is equipped with the through port 7 corresponding to each heat dissipation channel 6;When equipment is connected by input port and output port of battery charger body 1 and works, the line of electric fan 3 is connected power supply by hole 4, air flow is moved through the top space of annular blocking ring 2 when electric fan 3 rotates and works, and is contacted with heat dissipation fin plate 5 through each heat dissipation channel 6 through the through port 7, to carry out heat dissipation, prolong the service life of charger, more durable and reliable.

[0024] Specifically, the annular blocking ring 2 is equipped with protective net 8 for blocking electric fan 3 inside; in the embodiment, protective net 8 plays a protective role for electric fan 3 inside annular blocking ring 2.

[0025] Specifically, the through port 7 extends along the height of the heat dissipation fin plate 5, so that the cross section is rectangular; in the embodiment, the air flow through the through port 7 is preliminarily divided in height, which is beneficial to entering the two sides of the heat dissipation fin plate 5 at different heights and beneficial to the division.

[0026] Specifically, the heat dissipation fin 5 is provided with heat dissipation protrusions 9 on both sides, the heat dissipation protrusions 9 are all delta wing structures, the delta wing structures are outwardly arc-shaped protrusions on both sides, and the tail portions are inwardly arc-shaped recesses; in the embodiment, the heat dissipation protrusions 9 further expand the contact area of the heat dissipation fin 5 with air, and also facilitate the full and uniform contact of air flow with the heat dissipation fin 5.

[0027] Specifically, the heat dissipation protrusions 9 include first protrusions 10 with downward heads and second protrusions 11 with upward heads, the first protrusions 10 are arranged in multiple rows and multiple columns in a matrix manner, the second protrusions 11 are arranged in multiple rows and multiple columns in a matrix manner, multiple columns of the first protrusions 10 and the second protrusions 11 are arranged in an interlaced manner, a gap in each row forms a first flow channel 12 with a wave-shaped trend, and a gap in each column forms a second flow channel 13 in a vertical direction; in the embodiment, the heat dissipation protrusions 9 are arranged on both sides of the heat dissipation fin 5, and then the air flow in contact with the heat dissipation fin 5 flows along the first flow channel 12 and the second flow channel 13 under the guidance of the first protrusions 10 and the second protrusions 11, during which the air flow is randomly divided at each intersection of the first flow channel 12 and the second flow channel 13, and then the air flow is horizontally and vertically divided while being in contact with the heat dissipation fin 5, so that the air flow fully contacts the heat dissipation fin 5, and rapid heat dissipation is facilitated.

[0028] Specifically, the heat dissipation fin 5 is provided with multiple through holes 14 penetrating through both sides, and the through holes 14 are arranged on the flow channels; in the embodiment, the multiple through holes 14 are arranged on both sides of the heat dissipation fin 5, so that the air flow on both sides can be in convection.

[0029] Specifically, the heat dissipation protrusions 9 on both sides are arranged in a staggered manner, the through holes 14 on both sides of the heat dissipation fin 5 have different diameters, and the through holes 14 in adjacent columns have different directions; in the embodiment, the design of the different diameters of the through holes on both sides facilitates the air flow to flow in through the large end, and the different directions of the through holes 14 in adjacent columns further strengthen the convection, so that the charger has a long service life and is more durable and reliable.

[0030] Specifically, the battery charger body 1 is provided with a heat dissipation column 15 located in the heat dissipation channel 6 and having a triangular cross section; in the embodiment, the heat dissipation column 15 further blocks the air flow entering the heat dissipation channel 6, so that the air flow is blocked layer by layer and then contacts the heat dissipation fin 5 on both sides, thereby reducing the air flow that does not fully contact the heat dissipation fin 5 and directly flows out.

[0031] In order to facilitate the understanding of the above technical scheme of the utility model, the working principle or operation mode of the utility model in the actual process will be described in detail below.

[0032] Working principle: the battery charger body 1 is connected with the equipment through the input port and the output port, the line of the electric fan 3 is connected with the power supply through the hole 4, the electric fan 3 rotates and works, the air flow in the top space of the annular baffle 2, passes through the through hole 7, contacts the heat dissipation fin plate 5 through each heat dissipation channel 6, and is cooled; because the heat dissipation fin plate 5 is provided with the heat dissipation protrusions 9 on both sides, the air flow contacting the heat dissipation fin plate 5 is guided along the first flow channel 12 and the second flow channel 13 by the first protrusion 10 and the second protrusion 11, during which, when the air flow passes through each intersection point of the first flow channel 12 and the second flow channel 13, the air flow is randomly divided, and then the air flow is horizontally and vertically divided when contacting the heat dissipation fin plate 5, so that the air flow and the heat dissipation fin plate 5 are fully contacted, and the air flow is rapidly cooled; meanwhile, the heat dissipation fin plate 5 is provided with a plurality of through holes 14 on both sides, so that the air flow on both sides is in convection, the design of different hole diameters on both sides is beneficial to the air flow entering from the large hole end, the directions of the through holes 14 in adjacent rows are different, the convection is further strengthened, the heat dissipation is efficient, the service life of the charger is prolonged, and the charger is more durable and reliable.

[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A highly reliable battery charger with a heat dissipation structure, comprising a battery charger body (1), characterized in that, The battery charger body (1) has an annular retaining ring (2) at the center of its top surface. An electric fan (3) is installed inside the annular retaining ring (2) on the top of the battery charger body (1). The annular retaining ring (2) has a hole (4) through which the electric fan (3) circuit passes. The battery charger body (1) has multiple heat dissipation fins (5) spaced around the annular retaining ring (2) on its top. The heat dissipation fins (5) are made of a high heat dissipation material. A heat dissipation channel (6) is formed between adjacent heat dissipation fins (5). The annular retaining ring (2) has an opening (7) corresponding to each heat dissipation channel (6).

2. The high-reliability battery charger with heat dissipation structure according to claim 1, characterized in that, The annular retaining ring (2) is equipped with a protective net (8) that blocks the electric fan (3).

3. A high-reliability battery charger with a heat dissipation structure according to claim 1, characterized in that, The opening (7) extends along the height of the heat dissipation fins (5) so that the cross-section is rectangular.

4. A high-reliability battery charger with a heat dissipation structure according to claim 1, characterized in that, The heat dissipation fins (5) are provided with heat dissipation protrusions (9) on both sides. The heat dissipation protrusions (9) are all triangular airfoil structures. The triangular airfoil structures are arc-shaped protrusions on both sides and arc-shaped depressions at the tail.

5. A high-reliability battery charger with a heat dissipation structure according to claim 4, characterized in that, The heat dissipation bump (9) includes a first bump (10) with its head facing downward and a second bump (11) with its head facing upward. The first bump (10) is arranged in a matrix of multiple rows and columns, and the second bump (11) is arranged in a matrix of multiple rows and columns. The first bump (10) and the second bump (11) are arranged in a staggered manner with intervals. The gap between each row forms a first flow channel (12) with a wave-like direction, and the gap between each column forms a second flow channel (13) with a vertical direction.

6. A high-reliability battery charger with a heat dissipation structure according to claim 5, characterized in that, The heat dissipation fins (5) are provided with multiple through holes (14) that pass through both sides, and the through holes (14) are distributed on the flow channel.

7. A high-reliability battery charger with a heat dissipation structure according to claim 6, characterized in that, The heat dissipation protrusions (9) on both sides are staggered, the diameters of the through holes (14) on both sides of the heat dissipation fins (5) are different, and the small diameter holes of the through holes (14) in adjacent columns are in different directions.

8. A high-reliability battery charger with a heat dissipation structure according to claim 1, characterized in that, The battery charger body (1) has a heat dissipation column (15) located in the heat dissipation channel (6) on its top, and the heat dissipation column (15) has a triangular wing-shaped cross section.

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