Charger heat dissipation structure and charger

Abstract

The invention relates to a charger heat dissipation structure and a charger, the charger heat dissipation structure comprises a housing constructed as a charger housing, the housing comprises battery charging positions, a first cooling air guiding structure and a control assembly assembling position, each battery charging position is constructed as a groove capable of receiving a battery assembly, and the first cooling air guiding structure is constructed as a groove capable of receiving a battery assembly. The first cooling air guiding structure comprises a first air inlet structure, a first guiding structure and a first air exhaust structure, cooling air flow outside the shell can enter from the first air inlet structure and is guided to the first air exhaust structure through the first guiding structure, and the control assembly assembling position is constructed to be used for installing a control assembly of the charger, the control assembly assembling position and the battery charging position are both arranged in the first cooling air guiding structure, so that the control assembly and the battery assembly can be cooled at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of chargers, and in particular to a charger heat dissipation structure and a charger. Background Art

[0002] After a rechargeable battery pack is used and depleted, it needs to be recharged by a charger. During the charging process, both the charger's electronics and the rechargeable battery pack will heat up. Especially when a single charger is charging multiple battery packs, the temperature of both the charger's electronics and the battery pack may exceed operating parameters, causing the charger to stop charging or reduce the charging speed. In severe cases, this may even lead to a fire.

[0003] Existing chargers typically feature active or passive heat dissipation, but these typically only dissipate heat from the charger's internal electronics, failing to dissipate heat from the battery pack. Furthermore, while some existing chargers can dissipate heat from the battery pack, their heat dissipation structures are relatively complex. Therefore, it is necessary to propose a relatively simple heat dissipation structure that can simultaneously dissipate heat from both the charger's electronics and the battery pack, ensuring safety and efficiency during charging. Summary of the Invention

[0004] The object of the present invention is to provide a charger heat dissipation structure which can simultaneously dissipate heat and cool down the control component and battery component of the charger itself.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A charger heat dissipation structure includes a shell configured as a charger housing, wherein the shell includes:

[0007] a battery charging position, wherein the number of the battery charging position is at least one, and each of the battery charging positions is constructed as a slot capable of receiving a battery assembly;

[0008] a first cooling air guiding structure, the first cooling air guiding structure comprising a first air intake structure, a first guiding structure, and a first air exhaust structure, wherein cooling airflow outside the housing can enter from the first air intake structure and be guided to the first air exhaust structure via the first guiding structure;

[0009] a control assembly assembly position, wherein the control assembly assembly position is configured to install a control assembly of the charger;

[0010] Wherein, the control component assembly position and the battery charging position are both arranged in the first cooling air guiding structure.

[0011] In one embodiment, the charger heat dissipation structure further includes a second cooling air guiding structure, and the second cooling air guiding structure is isolated from the first cooling air guiding structure.

[0012] In one embodiment, the charger heat dissipation structure further includes a temperature control device, which is disposed inside the second cooling air guiding structure and can cool or heat the gas flowing through the first cooling air guiding structure.

[0013] In one embodiment, the second cooling air guide structure includes a cooling cavity, a second air intake structure and a second exhaust structure, the axial ends of the cooling cavity are respectively connected to the second air intake structure and the second exhaust structure, the first cooling air guide structure and the second cooling air guide structure are separated by the wall of the cooling cavity, and the temperature control device cools or heats part of the wall of the cooling cavity.

[0014] In one embodiment, the wall of the cooling cavity includes a first wall with relatively high thermal conductivity and a second wall with relatively low thermal conductivity, and the temperature control device cools or heats the first wall of the cooling cavity.

[0015] In one embodiment, the control component assembly position is arranged on the outer surface of the first wall.

[0016] In one embodiment, the temperature control device includes a semiconductor refrigeration plate, a radiator and a second guide fan. One side of the semiconductor refrigeration plate is in contact with the wall of the cooling cavity, and the other side is connected to the radiator. The second guide fan guides the air outside the shell from the second air intake structure into the cooling cavity, and after flowing through the radiator, it is discharged from the second exhaust structure to the outside of the shell.

[0017] In one embodiment, a temperature detection component is provided on the outer upper surface of the wall of the cooling shell, and the temperature detection component is connected to the temperature control device by signal.

[0018] In one embodiment, the first air intake structure is arranged opposite to the assembly position of the control component.

[0019] In one embodiment, the first vent structure is an opening of a slot of the battery charging station.

[0020] This embodiment further provides a charger, including a housing and a control component, wherein the housing is provided with any of the charger heat dissipation structures described above, and the control component is assembled at the control component assembly position.

[0021] The present invention adopts the above technical solution, which has the beneficial effect that the charger heat dissipation structure provided by the present invention sets the control component assembly position and the battery charging position in the same first cooling air guide structure. When the cooling air flow flows through the first cooling air guide structure, it can simultaneously dissipate heat for the charger's own electronic components and the charged battery assembly, so that the temperature of the entire charger and the battery assembly can be kept at a lower level.

[0022] In addition, the charger heat dissipation structure provided by the present invention is also provided with a second cooling air guide structure isolated from the first cooling air guide structure. The cold and hot ends of the temperature control device located in the second cooling air guide structure are separated, so that the temperature control device can cool the gas in the first cooling air guide structure. At the same time, its own heat dissipation will basically not affect the gas in the first cooling air guide structure, thereby further reducing the temperature of the control component and the battery component when the charger is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A perspective schematic diagram of a charger is shown.

[0024] Figure 2 Shows a top view of the charger with the power cord removed.

[0025] Figure 3 Shown Figure 2 Cross-sectional view at AA in the middle.

[0026] Figure 4 Shown Figure 2 Cross-sectional view at the middle BB. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the present invention can be more clearly understood. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0028] In the following description, for the purpose of illustrating the various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details. In other cases, well-known devices, structures, and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0029] Unless the context requires otherwise, throughout the specification and claims, the word "comprise" and variations such as "include" and "have" should be construed in an open, inclusive sense, that is, should be interpreted to mean "including, but not limited to."

[0030] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0031] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and / or" unless the context clearly dictates otherwise.

[0032] In the following description, in order to clearly show the structure and working mode of the present invention, many directional words will be used for description, but words such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and should not be understood as restrictive terms.

[0033] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0034] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0035] like Figure 1-Figure 4 As shown, this embodiment provides a charger, including a shell 1 and a control component 2 for implementing charging-related functions. The control component 2 includes a circuit board 21 and an electronic device 22 arranged on the circuit board 21. The control component 2 can realize the charging of the battery component by the charger and related control during the charging process, such as controlling the charging process, overheating protection, etc. The control component is a prior art, and this embodiment does not involve improvements to the control component. Therefore, the circuits for the control component to implement various functions are not described here.

[0036] The housing 1 is provided with at least one battery charging station 11. The charger in this embodiment is provided with four battery charging stations 11, but this is not limiting. The number of battery charging stations can be increased or decreased based on actual needs. Each battery charging station 11 is used to receive a rechargeable battery assembly. The battery charging station 11 is structured to position and secure the battery assembly within the battery charging station. The battery charging station 11 is also provided with a contact portion 111 for electrically contacting the battery assembly within the battery charging station 11. The charger electrically contacts the battery assembly through the contact portion 111 to charge the battery. In this embodiment, each battery charging station 111 is a groove formed on the top surface of the housing 1.

[0037] The charger also features a first cooling air guide structure 3, which includes a first air intake structure 31, a first guide structure 32, and a first exhaust structure 33. Cooling air flows in through the first air intake structure 31 and is guided to the first exhaust structure 33 via the first guide structure 32. The control assembly 2 and the battery charging station 11 are both located within the first cooling air guide structure 3. The cooling airflow cools the control assembly and the battery assembly within the battery charging station 11 as it flows through. It also dissipates heat from the charger's own electronic components and the battery assembly being charged, ensuring that the entire charger and the battery assembly remain at a low temperature while charging.

[0038] For details, see Figure 1-Figure 3 The housing 1 has a generally rectangular shape, with its length, width, and height defined along the x-axis, y-axis, and z-axis, respectively. A first air intake structure 31 is disposed in the center of the top surface of the housing 1 and comprises a plurality of openings spaced apart along the x-axis. Two of the four battery charging positions 11 form a group, with the two battery charging positions 11 in the same group positioned on either side of the first air intake structure 31 along the y-axis. Battery charging positions 11 in different groups are spaced apart along the x-axis. Preferably, the first air intake structure 31 extends along the x-axis to match the distance of each battery charging position 11, with at least a portion of the first air intake structure 31 positioned adjacent to each battery charging position 11. This means that the projections of each battery charging position 11 and the first air intake structure 31 on the x-axis at least partially overlap.

[0039] The control component 2 is arranged inside the shell 1. The shell 1 is provided with a control component assembly position for assembling the control component 2 directly below the first air intake structure 31, so that the cooling airflow entering through the first air intake structure 31 can cool the control component 2. The first guide structure 32 connects the first air intake structure 31 and each battery charging position 11, wherein a plurality of through holes 112 are provided on the side wall of the battery charging position 11 facing the first air intake structure 31. Each battery charging position 11 is fixedly installed with a first guide fan 34 on the inner side of the side wall where the through holes 112 are located. The first guide fan 34 guides the cooling airflow entering through the first air intake structure 31 to the corresponding battery charging position 11 to cool the battery components located in the battery charging position 11. At the same time, the opening portion of the battery charging position 11 serves as the first exhaust structure 33 of the first cooling air guide structure 3, allowing the cooling airflow to be discharged from the opening portion of the battery charging position 11, completing the flow of the cooling airflow in the first cooling air guide structure 3. The flow direction diagram of the cooling airflow in the first cooling air guide structure 3 is shown in FIG. Figure 3 Indicated by the arrow direction.

[0040] See also Figure 1-Figure 4 The charger provided in this embodiment also includes a housing 1 and a second cooling air guide structure 4. The second cooling air guide structure 4 is isolated from the first cooling air guide structure 3, and the cooling airflows passing through the first cooling air guide structure 3 and the second cooling air guide structure 4 do not interfere with each other. Specifically, the second cooling air guide structure 4 constructs a cooling cavity 41 arranged along the x-axis within the housing. The housing 1 is provided with a second air intake structure 42 and a second air exhaust structure 43 at positions corresponding to the x-axis ends of the cooling cavity 41. The cooling cavity 41 is essentially a sealed structure within the housing. The x-axis ends of the cooling cavity 41 are respectively connected to the second air intake structure 42 and the second air exhaust structure 43, so that the cooling airflow can enter through the second air intake structure 42, pass through the entire cooling cavity 41, and then flow out of the second air exhaust structure 43.

[0041] The cooling cavity 41 is also provided with a temperature control device 5, which includes a semiconductor cooling plate 51 provided on the inner upper wall of the cooling cavity 41, a radiator 52 provided in the cooling cavity 41, and a second guide fan 53 located between the radiator and the second air intake structure 42 and / or the second air exhaust structure 43. The upper end surface of the semiconductor cooling plate 51 is in close contact with the upper wall of the cooling cavity 41, and the lower end surface of the semiconductor cooling plate 51 is in close contact with the radiator 52 or the like. Figure 4As shown in the figure, it is connected to the radiator 52 arranged in the cooling cavity through a copper tube to conduct the heat generated by the semiconductor refrigeration plate 51 when it is working to the radiator 52. When the semiconductor refrigeration plate 51 is working, its upper end face is the cold end. At this time, the air flowing through the upper wall of the cooling cavity 41 is cooled to form cold air with a lower temperature, and the cold air is guided by the first cooling air guide structure 3 to cool the control component 2 and the battery component; the lower end face is the hot end, and the hot end conducts the heat to the radiator 52. Finally, the second guide fan 53 guides the airflow outside the shell to flow through the cooling cavity 41 and conducts the heat of the radiator 52 to the outside of the shell. The flow direction diagram of the cooling airflow in the second cooling air guide structure 4 is shown in FIG. Figure 4 Indicated by the arrow direction.

[0042] The cooling cavity 41 separates the hot and cold ends of the temperature control device 5. The cold end cools the air flowing through the first cooling air guide structure 3, while the heat generated by the hot end is discharged through the cooling cavity 41. This allows the temperature of the entire control component 2 and the battery assembly to remain at a low level when the charger is charging the battery assembly, ensuring safety and charging efficiency. It should be noted that the use of semiconductor cooling plates 51 for cooling the temperature control device 5 in this embodiment is a preferred solution, which can make the entire temperature control device 5 smaller and easier to assemble. In some cases, liquid cooling can also be used to achieve the same purpose.

[0043] Preferably, the upper surface of the cooling cavity 41 is made of a material with good thermal conductivity such as metal or ceramic to facilitate the conduction of the cold end temperature, and the other surfaces are made of a material with poor thermal conductivity such as plastic to allow less heat from the cooling cavity 41 to be conducted into the shell.

[0044] Another preferred embodiment, see Figure 3 and Figure 4 The control component 2 is arranged on the upper surface outside the cooling cavity 41, that is, on one side of the cold end of the semiconductor refrigeration plate 51. When the temperature of the cold end of the semiconductor refrigeration plate 51 is transmitted to the upper wall, the control component 2 can be cooled in the first time.

[0045] In another preferred embodiment, a temperature detection assembly is provided on the outer upper surface of the cooling cavity 41, which is not shown in the figure. When the temperature detection assembly detects a temperature greater than a preset temperature, it controls the operation of the semiconductor refrigeration chip, in which case the upper end surface of the semiconductor refrigeration chip becomes the cold end and the lower end surface becomes the hot end, thereby cooling the entire charger. When the temperature detection assembly detects a temperature less than a preset temperature, it controls the operation of the semiconductor refrigeration chip, in which case the upper end surface of the semiconductor refrigeration chip becomes the hot end and the lower end surface becomes the cold end, thereby heating the entire charger and battery pack, thereby preventing the battery pack from being unable to charge due to low-temperature protection in extremely cold weather.

[0046] While the preferred embodiments of the present invention have been described in detail above, it should be understood that, after reading the above teachings of the present invention, those skilled in the art may make various changes or modifications to the present invention. Such equivalents also fall within the scope defined by the appended claims.

Claims

1. A charger heat dissipation structure, comprising a shell constructed as a charger housing, characterized in that: The housing comprises: a battery charging position, wherein the number of the battery charging position is at least one, and each of the battery charging positions is constructed as a slot capable of receiving a battery assembly; a first cooling air guiding structure, the first cooling air guiding structure comprising a first air intake structure, a first guiding structure, and a first air exhaust structure, wherein cooling airflow outside the housing can enter from the first air intake structure and be guided to the first air exhaust structure via the first guiding structure; a control assembly assembly position, wherein the control assembly assembly position is configured to install a control assembly of the charger; Wherein, the control component assembly position and the battery charging position are both arranged in the first cooling air guiding structure.

2. The charger heat dissipation structure according to claim 1, wherein: The charger heat dissipation structure further includes a second cooling air guiding structure, which is isolated from the first cooling air guiding structure.

3. The charger heat dissipation structure according to claim 2, characterized in that: The charger heat dissipation structure further includes a temperature control device, which is disposed inside the second cooling air guiding structure and can cool or heat the gas flowing through the first cooling air guiding structure.

4. The charger heat dissipation structure according to claim 3, wherein: The second cooling air guiding structure includes a cooling cavity, a second air intake structure and a second exhaust structure. The axial ends of the cooling cavity are respectively connected to the second air intake structure and the second exhaust structure. The first cooling air guiding structure and the second cooling air guiding structure are separated by the wall of the cooling cavity. The temperature control device cools or heats part of the wall of the cooling cavity.

5. The charger heat dissipation structure according to claim 4, characterized in that: The wall of the cooling cavity includes a first wall with relatively high thermal conductivity and a second wall with relatively low thermal conductivity. The temperature control device cools or heats the first wall of the cooling cavity.

6. The charger heat dissipation structure according to claim 5, characterized in that: The control component assembly position is arranged on the outer surface of the first wall.

7. The charger heat dissipation structure according to claim 4, characterized in that: The temperature control device includes a semiconductor refrigeration plate, a radiator and a second guide fan. One side of the semiconductor refrigeration plate is in contact with the wall of the cooling cavity, and the other side is connected to the radiator. The second guide fan guides the air outside the shell from the second air intake structure into the cooling cavity, and after flowing through the radiator, it is discharged from the second exhaust structure to the outside of the shell.

8. The charger heat dissipation structure according to claim 4, wherein: The wall of the cooling shell is provided with a temperature detection component on the outer upper surface, and the temperature detection component is connected to the temperature control device by signal.

9. The charger heat dissipation structure according to claim 1, wherein: The first air intake structure is arranged opposite to the assembly position of the control component.

10. The charger heat dissipation structure according to claim 1, wherein: The first exhaust structure is an opening of the slot of the battery charging position.

11. A charger comprising a housing and a control assembly, characterized in that: The housing is provided with the charger heat dissipation structure according to any one of claims 1 to 10, and the control component is assembled at the control component assembly position.

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