Waterproof lithium battery charger
By setting up an inner shell, thermal conduction part and heat dissipation structure in the lithium battery charger, the heat dissipation space and PCBA board isolate the problem of the charger being susceptible to water during charging, and efficient heat dissipation and waterproofing effects are achieved. Users can charge safely without additional waterproofing measures.
Patent Information
- Application Number
- CN202421920688.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-09
AI Technical Summary
Existing chargers are susceptible to water damage when charging, resulting in damage to electronic components. Users need to select appropriate locations and arrange waterproofing measures to ensure the smooth progress of charging operations.
A lithium battery charger including an upper case, a lower case and a PCBA board is designed. By providing an inner case, an upper heat conduction part, a lower heat conduction part and a heat dissipation structure, the heat dissipation space and the PCBA board are isolated from each other, thereby improving waterproofing ability.
It realizes the waterproofing ability of the charger based on the heat dissipation effect, avoids water contact with the PCBA board, and prevents damage to electronic components. Users can charge smoothly without specific locations and waterproofing measures.
Smart Images
Figure CN222981272U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of chargers, in particular to a waterproof lithium battery charger. Background Art
[0002] Lithium batteries have relatively high energy density, and under the condition of the same energy capacity, lithium batteries have many advantages such as relatively light weight and relatively small volume. Therefore, lithium batteries are widely used as green energy sources for various electronic mobile devices and electric vehicles. During the use of electronic mobile devices and electric vehicles, it is necessary to supplement electric energy to the lithium battery through a charger to ensure the normal operation of the device. However, in existing chargers, water easily enters the interior of the charger through the heat dissipation structure for heat dissipation, thereby damaging electronic components. When a user replenishes electric energy for a device through a charger, a suitable position needs to be selected and certain waterproof measures need to be arranged to ensure the smooth progress of the charging operation. Summary of the Utility Model
[0003] The main purpose of the utility model is to propose a waterproof lithium battery charger, aiming to solve the technical problem that in the existing charger during charging, a suitable position needs to be selected and certain waterproof measures need to be arranged to ensure the smooth progress of the charging operation.
[0004] To achieve the above purpose, the waterproof lithium battery charger proposed by the utility model includes an upper shell, a lower shell and a PCBA board. The upper shell and the lower shell are installed to form an integral body, and the PCBA board is installed between the upper shell and the lower shell;
[0005] The lower shell includes a lower support boss and a lower heat conduction part. The lower support boss is arranged on the inner side wall of the lower shell. The PCBA board and the lower heat conduction part are both installed on the lower support boss, and the lower heat conduction part is located between the lower support boss and the PCBA board;
[0006] The upper shell includes an air inlet grid, an air outlet grid, a cooling fan and an inner shell. A heat dissipation space is formed between the inner shell and the upper shell. The air inlet grid and the air outlet grid are respectively arranged at both ends of the heat dissipation space. The cooling fan is arranged above the inner shell and is located on the side of the heat dissipation space close to the air inlet grid. A water outlet is arranged at the bottom of the heat dissipation space;
[0007] The inner shell includes an upper support boss, an upper heat conduction part and a heat dissipation structure. The upper support boss is arranged on the inner side wall of the inner shell. The PCBA board can be abutted against the upper support boss. The upper heat conduction part is installed on the upper support boss and is located between the upper support boss and the PCBA board. The heat dissipation structure is arranged at the top of the inner shell and is located between the cooling fan and the air outlet grid, and the heat dissipation structure is connected to the upper heat conduction part and the lower heat conduction part to conduct heat.
[0008] Optionally, the heat dissipation structure includes a long heat sink and a short heat sink. Both the long heat sink and the short heat sink are disposed on the top surface of the inner housing. The long heat sink is arranged along the length direction of the inner housing, and the short heat sink is arranged perpendicular to the long heat sink.
[0009] Optionally, the height of the long heat sink is greater than that of the short heat sink, and the number of the long heat sinks is several, and the number of the short heat sinks is multiple.
[0010] Optionally, both the upper support boss and the lower support boss include a vertical boss and a horizontal boss. The number of the vertical bosses is several, and the number of the horizontal bosses is multiple, and the vertical bosses and the horizontal bosses are perpendicular to each other.
[0011] Optionally, both the upper heat conducting part and the lower heat conducting part are heat conducting sheets. The heat conducting sheets are arranged along the vertical bosses and the horizontal bosses. The heat conducting sheets of the upper heat conducting part, the heat conducting sheets of the lower heat conducting part and the heat dissipation structure are connected.
[0012] Optionally, both the upper heat conducting part and the lower heat conducting part are heat conducting tubes. The heat conducting tubes are arranged along the vertical bosses and the horizontal bosses. The heat conducting tubes of the upper heat conducting part, the heat conducting tubes of the lower heat conducting part and the heat dissipation structure are communicated with each other. The heat conducting tubes and the interior of the heat dissipation structure contain a heat conducting liquid.
[0013] Adopting the technical solution of the present utility model has the following beneficial effects:
[0014] By providing the inner housing, the upper heat conducting part, the lower heat conducting part and the heat dissipation structure, the heat dissipation space is isolated from the installation of the PCBA board. Thus, on the basis of achieving the heat dissipation effect, the waterproof ability is improved. Water is not easily in contact with the PCBA board through the air inlet grid and the air outlet grid, thereby preventing damage to the electronic components. When the user replenishes the electric energy of the device through the lithium battery charger, there is no need to select a suitable position and arrange certain waterproof measures to ensure the smooth progress of the charging operation.
[0015] During charging, air flow is inhaled from the air inlet grid through heat dissipation. The air flow then flows along the length direction of the long heat sink, skims over the long heat sink and the short heat sink, and then is discharged from the air outlet grid. At this time, the heat generated by the PCBA board can be conducted to the heat dissipation structure through the upper heat conducting part and the lower heat conducting part for heat dissipation, thus playing a role in heat dissipation. The water entering the heat dissipation space from the air inlet grid and the air outlet grid will be isolated from the PCBA board due to the blockage of the inner housing and can be discharged out of the heat dissipation space through the water outlet. Description of the Drawings
[0016] 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 drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.
[0017] Figure 1 Schematic diagram of the overall structure of a waterproof lithium battery charger according to an embodiment of the present invention;
[0018] Figure 2 Schematic diagram of the internal structure of the upper shell of a waterproof lithium battery charger according to an embodiment of the present invention;
[0019] Figure 3 Schematic diagram of the exploded structure of a waterproof lithium battery charger according to an embodiment of the present invention Figure 1 ;
[0020] Figure 4 Schematic diagram of the exploded structure of a waterproof lithium battery charger according to an embodiment of the present invention Figure 2 。
[0021] Explanation of the reference numerals of the drawings: upper shell 100, air inlet grille 110, air outlet grille 120, inner shell 130, long heat sink 1301, short heat sink 1302, upper support boss 1303, lower shell 200, lower support boss 210, PCBA board 300, cooling fan 400.
[0022] The realization of the object, functional features and advantages of the present invention will be further described with reference to the embodiments and the drawings. Detailed implementation manners
[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.
[0024] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If this specific posture changes, the directional indications will also change accordingly.
[0025] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.
[0026] This utility model provides a waterproof lithium battery charger.
[0027] Embodiment 1
[0028] As Figures 1 to 4 shown, in an embodiment of this utility model, the waterproof lithium battery charger includes an upper housing 100, a lower housing 200, and a PCBA board 300. The upper housing 100 and the lower housing 200 are installed to form an integral body, and the PCBA board 300 is installed between the upper housing 100 and the lower housing 200. Specifically, the lower housing 200 includes a lower support boss 210 and a lower heat conduction part. The lower support boss 210 is disposed on the inner side wall of the lower housing 200. The PCBA board 300 and the lower heat conduction part are both installed on the lower support boss 210, and the lower heat conduction part is located between the lower support boss 210 and the PCBA board 300. Further, the upper housing 100 includes an air inlet grid 110, an air outlet grid 120, a cooling fan 400, and an inner housing 130. A heat dissipation space is formed between the inner housing 130 and the upper housing 100. A water outlet (not shown in the figure) is provided at the bottom of the heat dissipation space. The water entering the heat dissipation space through the air inlet grid 110 and the air outlet grid 120 will be isolated from the PCBA board 300 due to the blockage of the inner housing 130 and can be discharged out of the heat dissipation space through the water outlet. In addition, the air inlet grid 110 and the air outlet grid 120 are respectively disposed at both ends of the heat dissipation space. The cooling fan 400 is disposed above the inner housing 130 and is located on the side of the heat dissipation space close to the air inlet grid 110.
[0029] In this embodiment, the inner housing 130 includes an upper support boss 1303, an upper heat conduction part, and a heat dissipation structure. The upper support boss 1303 is disposed on the inner side wall of the inner housing 130. The PCBA board 300 can be abutted against the upper support boss 1303. The upper heat conduction part is installed on the upper support boss 1303 and is located between the upper support boss 1303 and the PCBA board 300. The heat dissipation structure is disposed at the top of the inner housing 130 and is located between the cooling fan 400 and the air outlet grid 120, and the heat dissipation structure is connected to and conducts heat with the upper heat conduction part and the lower heat conduction part.
[0030] As Figure 2As shown in the figure, the heat dissipation structure specifically includes a long heat sink 1301 and a short heat sink 1302. Both the long heat sink 1301 and the short heat sink 1302 are arranged on the top surface of the inner housing 130. The long heat sink 1301 is arranged along the length direction of the inner housing 130, and the short heat sink 1302 is arranged perpendicular to the long heat sink 1301. Specifically, the height of the long heat sink 1301 is greater than the height of the short heat sink 1302, and the number of the long heat sinks 1301 is specifically 2, while the number of the short heat sinks 1302 is specifically 4. When the cooling fan 400 sucks in air from the air inlet grid 110, the air can flow along the length direction of the long heat sink 1301, pass over the long heat sink 1301 and the short heat sink 1302, and then be discharged from the air outlet grid 120, thus playing a role in heat dissipation.
[0031] As Figure 3 and 4 shown in the figure, the upper support boss 1303 and the lower support boss 210 both include a vertical boss and a horizontal boss. Specifically, the number of the vertical bosses is 2, the number of the horizontal bosses is 5, and the vertical bosses and the horizontal bosses are perpendicular to each other. In this embodiment, both the upper heat conducting part and the lower heat conducting part are heat conducting sheets, and the heat conducting sheets are arranged along the vertical bosses and the horizontal bosses. Moreover, the heat conducting sheets of the upper heat conducting part, the heat conducting sheets of the lower heat conducting part, the long heat sink 1301 and the short heat sink 1302 are connected to each other. Specifically, the heat conducting sheets are specifically arranged on the side of the vertical bosses and the horizontal bosses facing the PCBA board 300, and the heat conducting sheets of the upper heat conducting part, the heat conducting sheets of the lower heat conducting part, the long heat sink 1301 and the short heat sink 1302 are an integral whole. Among them, between the heat conducting sheets of the upper heat conducting part and the heat conducting sheets of the lower heat conducting part, they are only connected to each other through the heat conducting sheets arranged on the horizontal bosses of the upper support boss 1303 and the lower support boss 210 respectively. During production, the PCBA board 300 can be first arranged in the heat conducting sheets, and then the upper housing 100 and the lower housing 200 are installed to form an integral whole. During charging, the heat generated by the PCBA board 300 can be conducted to the heat dissipation structure through the heat conducting sheets for heat dissipation.
[0032] In some other embodiments, it is also possible to make the heat conducting sheets, the long heat sink 1301 and the short heat sink 1302 in the upper housing 100 as an independent whole, and the heat conducting sheets in the lower housing 200 as another independent whole. During production, two independent wholes can be respectively installed in the upper housing 100 and the lower housing 200. For example, through an injection molding machine and an injection molding die, the heat conducting sheets, the long heat sink 1301 and the short heat sink 1302 in the upper housing 100 are integrally formed into the upper housing 100, and the heat conducting sheets are installed in the lower housing 200 through welding operations. Then the PCBA board 300 is installed, and the upper housing 100 and the lower housing 200 are installed to form an integral whole.
[0033] Embodiment 2
[0034] The difference between this embodiment and the first embodiment is that the upper heat conducting part and the lower heat conducting part are both heat conducting pipes, which are arranged along the vertical boss and the horizontal boss, and the heat conducting pipes of the upper heat conducting part, the heat conducting pipes of the lower heat conducting part and the heat dissipation structure are connected, and heat conducting liquid is contained inside the heat conducting pipes and the heat dissipation structure. When charging, the heat generated by the PCBA board 300 can be conducted to the heat dissipation structure through the heat conducting liquid in the heat conducting pipe for heat dissipation.
[0035] In addition, the heat pipe of the upper heat conducting part and the heat pipe of the lower heat conducting part are plugged into each other, and the long heat sink 1301 and the short heat sink 1302 are both provided with cavities connected to the heat pipe of the upper heat conducting part. Moreover, the heat pipe of the upper heat conducting part, the long heat sink 1301 and the short heat sink 1302 in this embodiment can also be integrally formed into the upper housing 100 by an injection molding machine and an injection mold.
[0036] Specifically, the working principle and process of the utility model are:
[0037] By providing an inner shell, an upper heat-conducting part, a lower heat-conducting part and a heat dissipation structure, the heat dissipation space is isolated from the installed PCBA board, thereby improving the waterproof ability on the basis of achieving the heat dissipation effect. Water is not easy to contact the PCBA board through the air inlet grille and the air exhaust grille, thereby preventing damage to the electronic components. When the user replenishes the power of the device through the lithium battery charger, there is no need to select a suitable position and arrange certain waterproof measures to ensure the smooth charging operation.
[0038] When charging, the airflow is sucked in from the air inlet grille through heat dissipation, and the airflow passes through the long heat sink and the short heat sink along the length direction of the long heat sink, and then discharged from the exhaust grille. At this time, the heat generated by the PCBA board can be conducted to the heat dissipation structure through the upper heat conduction part and the lower heat conduction part for heat dissipation, thereby playing a role in heat dissipation. The water that enters the heat dissipation space from the air inlet grille and the exhaust grille will be isolated from the PCBA board due to the obstruction of the inner shell, and can be discharged out of the heat dissipation space through the water outlet.
[0039] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.
Claims
1. A waterproof lithium battery charger, characterized in that: It includes an upper shell, a lower shell and a PCBA board, wherein the upper shell and the lower shell are installed to form a whole, and the PCBA board is installed between the upper shell and the lower shell; The lower housing comprises a lower supporting boss and a lower heat conducting part, wherein the lower supporting boss is arranged on the inner side wall of the lower housing, the PCBA board and the lower heat conducting part are both mounted on the lower supporting boss, and the lower heat conducting part is located between the lower supporting boss and the PCBA board; The upper shell includes an air inlet grille, an air exhaust grille, a cooling fan and an inner shell; a cooling space is formed between the inner shell and the upper shell; the air inlet grille and the air exhaust grille are respectively arranged at two ends of the cooling space; the cooling fan is arranged above the inner shell and located on one side of the cooling space close to the air inlet grille; a water outlet is arranged at the bottom of the cooling space; The inner shell includes an upper supporting boss, an upper heat conducting part and a heat dissipation structure, wherein the upper supporting boss is arranged on the inner side wall of the inner shell, the PCBA board can abut against the upper supporting boss, the upper heat conducting part is installed on the upper supporting boss and is located between the upper supporting boss and the PCBA board, the heat dissipation structure is arranged on the top of the inner shell and is located between the heat dissipation fan and the exhaust grille, and the heat dissipation structure is connected to the upper heat conducting part and the lower heat conducting part and conducts heat.
2. The waterproof lithium battery charger according to claim 1, characterized in that: The heat dissipation structure includes long heat sinks and short heat sinks, both of which are arranged on the top surface of the inner shell, the long heat sinks are arranged along the length direction of the inner shell, and the short heat sinks are arranged perpendicular to the long heat sinks.
3. The waterproof lithium battery charger according to claim 2, characterized in that: The height of the long heat sink is greater than that of the short heat sink, and the number of the long heat sink is several, and the number of the short heat sink is multiple.
4. The waterproof lithium battery charger according to claim 1, characterized in that: The upper supporting boss and the lower supporting boss both include a vertical boss and a transverse boss. The number of the vertical bosses is several, the number of the transverse bosses is multiple, and the vertical bosses and the transverse bosses are perpendicular to each other.
5. The waterproof lithium battery charger according to claim 4, characterized in that: The upper heat conducting part and the lower heat conducting part are both heat conducting sheets, and the heat conducting sheets are arranged along the vertical bosses and the transverse bosses. The heat conducting sheets of the upper heat conducting part, the heat conducting sheets of the lower heat conducting part and the heat dissipation structure are connected.
6. The waterproof lithium battery charger according to claim 4, characterized in that: The upper heat conducting part and the lower heat conducting part are both heat conducting pipes, and the heat conducting pipes are arranged along the vertical bosses and the horizontal bosses. The heat conducting pipes of the upper heat conducting part, the heat conducting pipes of the lower heat conducting part and the heat dissipation structure are connected, and the heat conducting liquid is contained inside the heat conducting pipes and the heat dissipation structure.