Radiator and battery car charger

Abstract

The invention relates to the technical field of battery car chargers, and particularly provides a radiator and a battery car charge.The radiator comprises an outer shell, an inner shell, a fan, a driving part and a baffle, the inner shell is embedded into the inner side of the outer shell, and an air flow channel is formed between the inner shell and the outer shell in a spaced mode; the two opposite ends of the outer shell are opened to form an air inlet and an air outlet respectively, a fan is fixedly installed at the opening of at least one of the air inlet and the air outlet, one face, right opposite to the air inlet and the air outlet, of the inner shell is opened to form an air inlet and an air outlet respectively, and baffles are arranged on the inner sides of the air inlet and the air outlet in a sliding mode respectively. The baffle is connected with the inner side of the inner shell through a driving part, the driving part stretches according to the temperature change in the inner shell and drives the baffle to slide so as to change the opening area of the air inlet and the air outlet, and the driving part stretches after being heated and shrinks after being cooled. According to the charger, pollution of air to the inner shell can be reduced, and meanwhile a good heat dissipation effect is kept.

Description

Technical Field

[0001] The present invention relates to the field of battery vehicle chargers, and particularly to a radiator and a battery vehicle charger. Background Art

[0002] With the wide application of battery vehicles, the performance and safety of their chargers have received increasing attention. The battery vehicle charger generates heat during operation, especially during high-current charging, and the heat accumulation may cause the internal temperature of the charger to rise, affecting the service life of the charger. To address this issue, heat dissipation holes and cooling fans are commonly used in the prior art to reduce the internal temperature of the charger. However, the heat dissipation holes are likely to allow dust to enter the charger, resulting in dust accumulation on the circuit board, which not only reduces the heat dissipation efficiency but also may cause safety hazards such as short circuits. In addition, there are also chargers with dust-proof designs in the prior art, such as organizing dust entry by setting filters or dust-proof casings. However, these designs often have problems of insufficient heat dissipation efficiency or limited dust-proof effect. For example, the filter is easily blocked by dust, causing the heat dissipation holes to malfunction.

[0003] Although the heat dissipation design of the existing battery vehicle charger can reduce the internal temperature, it cannot effectively prevent dust from entering, resulting in dust accumulation and affecting the heat dissipation efficiency and circuit safety. Although the dust-proof design can prevent some dust from entering, the problem of blockage of the heat dissipation holes still exists, and the heat dissipation effect cannot be dynamically adjusted according to the actual temperature. Summary of the Invention

[0004] In view of this, the present invention provides a radiator and a battery vehicle charger in order to achieve the dynamic adjustment effect of the heat dissipation effect of the battery vehicle charger.

[0005] The technical solution of the present invention is realized as follows: The present invention provides a radiator, including: an outer housing, an inner housing, a fan, a driving member, and a baffle. The inner housing is embedded inside the outer housing, and an air flow channel is formed at an interval between the inner housing and the outer housing. The opposite ends of the outer housing are respectively opened to form an air inlet and an air outlet. At least one of the air inlet and the air outlet is fixedly installed with a fan at the opening. The surfaces of the inner housing facing the air inlet and the air outlet are respectively opened to form an air intake and an air outlet. A baffle is slidably provided inside the air intake and the air outlet. The baffle is connected to the inner side of the inner housing through a driving member. The driving member expands and contracts according to the temperature change inside the inner housing and drives the baffle to slide so as to change the opening areas of the air intake and the air outlet. The driving member expands when heated and contracts when cooled.

[0006] In the above embodiments, the air inlet and the air outlet are both connected to the air flow channel. When the fan is turned on, part of the external cooling air enters through the air inlet, passes through the air flow channel between the inner housing and the outer housing, and finally flows out through the air outlet, which can cool the outer surface of the inner housing. When the temperature inside the inner housing does not reach the temperature that needs to be cooled, the driving member is in a contracted state. At this time, the baffle blocks the air inlet and the air outlet, and the inner housing forms a relatively enclosed space without air entering. When the temperature inside the inner housing is relatively high and reaches the temperature that needs to be cooled, due to the driving of the temperature, the driving member will expand. At this time, the baffle slides, so that the air inlet and the air outlet are completely opened or partially opened. At this time, part of the cooling air will enter through the air inlet, flow through the inside of the inner housing, and finally flow out through the air outlet and enter the air flow channel. At this time, it is possible to accelerate the air flow inside the inner housing to achieve a better cooling purpose.

[0007] Through the above driving member, the movement of the temperature control baffle can be realized, so as to change the opening and closing of the inner housing opening. On the premise of ensuring the heat dissipation requirements, unnecessary air can be prevented from entering the inner housing, so that the environment inside the inner housing can be better protected. Secondly, the air flow channel formed between the inner housing and the outer housing can also serve as a buffer structure to prevent external rainwater from directly entering the inner housing after entering the outer housing.

[0008] In some embodiments, the driving member is a memory alloy that expands and contracts according to temperature.

[0009] In the above embodiments, the driving member can specifically adopt a shape memory spring, and its deformation temperature is 40-50 °C, such as using Ni-Ti alloy, etc.

[0010] In some embodiments, both the air inlet and the air outlet are grid-shaped, and a plurality of positioning protrusions are arranged in a straight line array on the surface of the baffle, and the plurality of positioning protrusions are sequentially embedded in the grid openings of the air inlet and the air outlet.

[0011] The grid can form a guiding and limiting structure, which can ensure that the baffle moves in a straight line reciprocating motion along a specified direction.

[0012] In some embodiments, a flow guide plate is further included. The flow guide plate is fixed at one end of the positioning protrusion away from the baffle, and the flow guide plate is located outside the inner housing.

[0013] The flow guide plate can guide the intake air flow, and at the same time can protect the air inlet, avoiding the suspended debris in the intake air from directly impacting the air inlet and accumulating at the air inlet.

[0014] In some embodiments, the surface of the flow guide plate away from the baffle is streamlined.

[0015] The streamlined deflector can conduct low-resistance diversion of the intake air, reduce wind resistance and unnecessary intake air energy dissipation, and at the same time is beneficial to reducing wind noise.

[0016] In some embodiments, an air intake adjustment opening is further formed on the surface of the inner housing along the sliding direction of the baffle. When the driving member is heated and expands, the baffle can slide along the air intake adjustment opening to protrude from the surface of the inner housing.

[0017] The air intake adjustment opening allows the baffle to block the air intake flow path to a certain extent when the air intake is open, which is beneficial to the air entering the air intake.

[0018] In some embodiments, heat dissipation fins are integrally provided on the outer surface of the inner housing.

[0019] The heat dissipation fins can improve the cooling efficiency of the outer surface of the inner housing when the intake air passes through the air intake flow path.

[0020] The second aspect of the present invention further provides an electric vehicle charger, which includes the above radiator, and also includes an integrated circuit board. The integrated circuit board is fixedly installed inside the inner housing. The integrated circuit board is electrically connected to an external power supply through an input power line, and the integrated circuit board is electrically connected to an electric vehicle charging port through an output power line.

[0021] The present invention has the following beneficial effects compared with the prior art:

[0022] The radiator and the electric vehicle charger provided by the present invention adopt a heat-responsive partitioned heat dissipation method. In the low-temperature stage, only the outer surface of the inner housing can be cooled. In the high-temperature stage, the partition is driven by a driver to move, so that the air intake and the air outlet are opened, and the cooling air can enter the inside of the inner housing to cool the structure inside the inner housing. This structural design can better maintain the cleanliness inside the inner housing while ensuring the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 Is an axonometric view of the electric vehicle charger of the present invention;

[0025] Figure 2 Is an exploded view of the electric vehicle charger of the present invention;

[0026] Figure 3 Is a side sectional view of the electric vehicle charger of the present invention;

[0027] Figure 4 Isometric view of the internal mating structure between the outer housing and the inner housing in the battery charger of the present invention;

[0028] Figure 5 Partial exploded view of the mating between the inner housing and the baffle part in the battery charger of the present invention.

[0029] In the figure: 1 - outer housing, 2 - inner housing, 3 - fan, 4 - driving member, 5 - baffle, 6 - deflector, 7 - integrated circuit board, 11 - air inlet, 12 - air outlet, 21 - intake port, 22 - outlet port, 23 - air intake adjustment port, 24 - heat dissipation fins, 51 - positioning protrusion. Specific embodiments

[0030] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the embodiments of the present invention belong. If the definitions stated in this section are contrary to or otherwise inconsistent with the definitions stated in the patents, patent applications, published patent applications, and other publications incorporated herein by reference, the definitions listed in this section shall prevail over the definitions incorporated herein by reference.

[0035] Unless otherwise specified, the methods used in the following embodiments are all conventional methods. The materials, reagents, and instruments used, unless otherwise specified, are all conventional materials, reagents, and instruments in this field, and those skilled in the art can obtain them through commercial channels.

[0036] As Figure 1 shown, in combination with Figures 2 - 5 , the present invention provides a radiator structure, which includes: an outer casing 1, an inner casing 2, a fan 3, a driving member 4, and a baffle 5. The inner casing 2 is embedded inside the outer casing 1, and an air flow channel is formed at intervals between the inner casing 2 and the outer casing 1. Opposite ends of the outer casing 1 are respectively opened to form an air inlet 11 and an air outlet 12. At least one of the air inlet 11 and the air outlet 12 is fixedly installed with a fan 3 at the opening. One side of the inner casing 2 facing the air inlet 11 and the air outlet 12 is respectively opened to form an air inlet 21 and an air outlet 22. A baffle 5 is slidably disposed inside both the air inlet 21 and the air outlet 22. The baffle 5 is connected to the inside of the inner casing 2 through the driving member 4. The driving member 4 expands and contracts according to the temperature change inside the inner casing 2 and drives the baffle 5 to slide, thereby changing the opening areas of the air inlet 21 and the air outlet 22. The driving member 4 expands when heated and contracts when cooled.

[0037] In the above embodiments, after the external air enters the inside of the outer casing 1 through the air inlet 11, a part of it finally flows to the air outlet 12 through the air flow channel, and this process can cool down the outer surface of the inner casing 2. Another part may enter the inside of the inner casing 2 through the air inlet 21 and is finally discharged through the air outlet 22 and the air outlet 12 in sequence, thereby achieving the cooling of the inside of the inner casing 2.

[0038] In the above process, the condition for determining whether the cooling air flow enters the inner casing 2 lies in whether the driving member 4 drives the baffle 5 to block the air inlet 21. Specifically, the driving member 4 is a temperature-responsive driving structure, and the driving of the baffle 5 is achieved through temperature change. Specifically, when the temperature inside the inner casing 2 is higher than the preset response temperature, the driving member 4 responds and drives the baffle 5 to move to open both the air inlet 21 and the air outlet 22 simultaneously. When the temperature inside the inner casing 2 is lower than the preset response temperature, the driving member 4 responds and drives the baffle 5 to move to close both the air inlet 21 and the air outlet 22 simultaneously or reduce the opening degree.

[0039] The driving member 4 can adopt a combined structure of a temperature control sensor and a driving device, or a mechanical temperature control structure, such as a temperature deformation material, which is driven by deformation.

[0040] In some embodiments, the driving member 4 is a shape memory alloy that expands and contracts according to temperature.

[0041] In the above embodiments, the corresponding shape memory alloy driving member 4 expands when the temperature is higher than the preset temperature, thereby driving the baffle 5 to move to open the air inlet 21 and the air outlet 22. When the temperature is lower than the preset temperature, the shape memory alloy driving member 4 contracts, thereby driving the baffle 5 to move to close the air inlet 21 and the air outlet or reduce the opening area.

[0042] The above shape memory alloy can adopt a shape memory alloy spring, and the preset temperature is 40 - 50 °C. For example, a Ni-Ti shape memory alloy can be used.

[0043] In some embodiments, both the air inlet 21 and the air outlet 22 are in a grid shape, and a plurality of positioning protrusions 51 are arranged in a straight line array on the surface of the baffle 5, and the plurality of positioning protrusions 51 are sequentially embedded in the grid openings of the air inlet and the air outlet.

[0044] In the above embodiments, by adopting the grid opening, on the one hand, the grid structure can be used to position and guide the positioning protrusions 51, so as to realize the guiding of the movement track of the baffle 5, and on the other hand, it can prevent large-particle substances from directly entering the inner housing 2, playing a certain protective role.

[0045] In some embodiments, it further includes a deflector 6, and the deflector 6 is fixed at one end of the positioning protrusion 51 away from the baffle 5, and the deflector 6 is located outside the inner housing 2.

[0046] In the above embodiments, when the air inlet 21 is closed, the deflector 6 can deflect the gas flowing towards the air inlet 21, reduce the air flow resistance, reduce energy consumption and noise. At the same time, the deflector 6 can play a certain blocking and protecting role to prevent suspended impurities such as dust in the intake air from directly impacting the baffle 5 in the air inlet 21, causing dust accumulation. Secondly, when the air inlet 21 is opened, the deflector 6 can move along with the baffle 5, so as to block the cross-sectional area of the intake air flow path at this time, making the intake air easier to enter the air inlet 21 and improving the heat dissipation efficiency inside the inner housing 2 at the corresponding moment.

[0047] In some embodiments, the surface of the deflector 6 away from the baffle 5 is streamlined.

[0048] In the above embodiments, the streamlined deflector 6 can further reduce the wind resistance and wind noise.

[0049] In some embodiments, an air inlet adjustment opening 23 is further formed on the surface of the inner housing 2 along the sliding direction of the baffle 5. When the driving member 4 is heated and extends, the baffle 5 can slide along the air inlet adjustment opening 23 to protrude from the surface of the inner housing.

[0050] In the above embodiments, by providing the air inlet adjustment opening 23, the cross-sectional area of the air flow channel can be reduced when the air inlet 21 needs to intake air, thereby increasing the probability of air entering the air inlet 21.

[0051] In some embodiments, heat dissipation fins 24 are integrally provided on the outer surface of the inner housing 2.

[0052] The heat dissipation fins 24 can increase the outer surface area of the inner housing 2 and improve the heat exchange efficiency of its outer surface, thereby facilitating avoiding direct contact between the inside of the inner housing 2 and the air.

[0053] Based on the above radiator structure, the present invention further provides an electric vehicle charger, which is achieved by arranging an integrated circuit board 7 for the charger inside the inner housing 2. The integrated circuit board 7 is fixedly installed on the inner side of the inner housing 2. The integrated circuit board 7 is electrically connected to an external power supply through an input power line, and the integrated circuit board 7 is electrically connected to an electric vehicle charging port through an output power line.

[0054] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A radiator, characterized in that: include: An outer shell (1), an inner shell (2), a fan (3), a driving member (4) and a baffle (5), wherein the inner shell (2) is embedded in the inner side of the outer shell (1), an air flow passage is formed between the inner shell (2) and the outer shell (1), opposite ends of the outer shell (1) are opened to form an air inlet (11) and an air outlet (12), at least one of the air inlet (11) and the air outlet (12) is fixedly mounted with the fan (3) at the opening, and the inner shell (2) is directly opposite to the air inlet (11). One side of the air inlet (21) and the air outlet (22) are opened to form an air inlet (21) and an air outlet (22), and a baffle 5 is slidably provided on the inner side of the air inlet (21) and the air outlet (22). The baffle (5) is connected to the inner side of the inner shell (2) through a driving member (4). The driving member (4) expands and contracts according to the temperature change in the inner shell (2) and drives the baffle (5) to slide, thereby changing the opening area of ​​the air inlet (21) and the air outlet (22). The driving member (4) expands when heated and contracts when cooled.

2. The heat sink according to claim 1, characterized in that The driving member (4) is a memory alloy that can adjust its expansion and contraction according to temperature.

3. The heat sink according to claim 1, characterized in that The air inlet (21) and the air outlet (22) are both grille-shaped, and a plurality of positioning protrusions (51) are arranged on the surface of the baffle (5) along a linear array, and the plurality of positioning protrusions (51) are sequentially embedded in the grille openings of the air inlet and the air outlet.

4. The heat sink according to claim 3, characterized in that It also includes a guide plate (6), which is fixed to an end of the positioning protrusion (51) away from the baffle (5), and the guide plate (6) is located on the outside of the inner shell (2).

5. The heat sink according to claim 4, characterized in that The side of the guide plate (6) away from the baffle (5) is streamlined.

6. The heat sink according to claim 1, characterized in that The surface of the inner shell (2) is also provided with an air inlet adjustment port (23) along the sliding direction of the baffle (5); when the driving member (4) is heated and stretched, the baffle (5) can slide along the air inlet adjustment port (23) until it protrudes from the surface of the inner shell.

7. The heat sink according to claim 1, characterized in that The outer surface of the inner shell (2) is integrally provided with heat dissipation fins (24).

8. A battery vehicle charger, characterized in that: It comprises a radiator as described in any one of claims 1 to 7, and also comprises an integrated circuit board (7), wherein the integrated circuit board (7) is fixedly mounted on the inner side of the inner shell (2), the integrated circuit board (7) is electrically connected to an external power supply via an input power line, and the integrated circuit board (7) is electrically connected to a charging port of an electric battery vehicle via an output power line.

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