A charger based on cylindrical batteries

Abstract

This application relates to the field of chargers, and more particularly to a charger based on cylindrical batteries. The key technical points are: it includes a charger body with a battery compartment for placing the battery; it also includes: a fan element; a heat dissipation duct is formed through the charger body and is adjacent to the battery compartment; the fan element is located on the charger body and is used to guide air to unidirectionally circulate within the heat dissipation duct; and a heat-conducting element is located on the charger body and between the heat dissipation duct and the battery compartment, used to guide heat from the battery compartment to the heat dissipation duct. This application can improve the charger's heat dissipation capacity.

Description

Technical Field

[0001] This application relates to the field of chargers, and more particularly to a charger based on cylindrical batteries. Background Technology

[0002] Cylindrical batteries are a common battery structure. They are cylindrical in shape and encased in a metal shell. Inside, they contain electrolytes and motor materials. Cylindrical batteries are widely used in various electronic products and power tools due to their simple structure, mature manufacturing process, stable performance, and high energy density. Some cylindrical batteries have the function of multiple charge and discharge cycles and often need to be in contact with the matching charger when charging.

[0003] Currently, Chinese utility model patent CN220022371U discloses a portable charging device for cylindrical batteries. It mainly includes a charging shell, a charging and discharging module disposed in the charging shell, and a battery to form a portable charging system. A charging compartment is provided on the top of the charging shell. A No. 1 battery holder, a No. 2 battery holder, a No. 5 battery holder, and a No. 7 battery holder are respectively provided in the charging compartment. A negative electrode conductive metal sheet and a positive electrode conductive metal sheet are respectively provided on opposite sides in the charging compartment. The two conductive metal sheets are respectively connected to the discharge output terminal of the charging and discharging module through wires. When the battery is placed in the corresponding holder, the charging and discharging module charges and discharges the battery under the action of the conductive metal sheets.

[0004] Regarding the aforementioned technologies, current charger structures still have many shortcomings. For example, the battery generates heat during charging. Although most current chargers have overcurrent protection, the heat generated during charging can still cause the battery to swell or reduce charging efficiency. Therefore, there is still a lack of charger structures with good heat dissipation capabilities in the existing technology. Utility Model Content

[0005] To improve the heat dissipation capability of the charger, this application provides a charger based on a cylindrical battery.

[0006] The charger based on a cylindrical battery provided in this application adopts the following technical solution:

[0007] A charger based on a cylindrical battery includes a charger body, wherein the charger body has a battery compartment for storing the battery, and further includes:

[0008] A fan element is provided on the charger body, through which a heat dissipation duct is provided. The heat dissipation duct is arranged adjacent to the battery compartment. The fan element is located on the charger body and is used to guide air to circulate unidirectionally within the heat dissipation duct.

[0009] And a heat-conducting element, disposed on the charger body and located between the heat dissipation duct and the battery compartment, for guiding the heat in the battery compartment to the heat dissipation duct.

[0010] By adopting the above technical solution, the heat dissipated by the battery during charging can be dissipated by the heat-conducting element, and the heat can be sent away from the heat dissipation duct by the fan element, thereby achieving a high-efficiency heat dissipation effect, which in turn reduces the battery temperature. The possibility of battery expansion or decreased charging efficiency is reduced, and the heat dissipation capacity of the charger is optimized and improved.

[0011] Preferably, the heat dissipation duct extends straight from one side of the charger body to the other side, and the heat dissipation duct opens on opposite sides of the charger body. A guide baffle extending along the length of the heat dissipation duct is provided on the inner wall of the heat dissipation duct.

[0012] By adopting the above technical solution, the heat dissipation air duct is set as a straight structure, which is conducive to the airflow flowing in a single direction within the heat dissipation air duct. Furthermore, under the action of the guide baffle, the airflow can be further guided to flow in an orderly manner, resulting in efficient airflow.

[0013] Preferably, the heat-conducting element includes a heat sink that covers the heat dissipation duct, and one side of the heat sink is exposed inside the heat dissipation duct.

[0014] By adopting the above technical solution, the heat sink has a large heat dissipation area and can efficiently guide heat into the heat dissipation air duct.

[0015] Preferably, the heat sink is provided with heat dissipation fins, which extend into the heat dissipation duct.

[0016] By adopting the above technical solution, the heat dissipation fins can increase the heat dissipation area, thereby further improving the heat dissipation efficiency.

[0017] Preferably, the heat dissipation plate is provided with heat-absorbing fins, which are embedded in the charger body and extend to one side of the battery compartment.

[0018] By adopting the above technical solution, the heat-absorbing fins extending to one side of the battery compartment can improve the efficiency of heat transfer to the heat sink, and the heat dissipation effect is optimized and improved.

[0019] Preferably, a thermally conductive pad is provided at the bottom of the battery compartment, the thermally conductive pad is used to wrap the battery, and the thermally conductive pad is connected to the heat-absorbing fins.

[0020] By adopting the above technical solution, the thermal pad is placed at the bottom of the battery compartment to fit and wrap the battery. At this time, the heat will be efficiently transferred to the heat absorption fins through the thermal pad, and the heat dissipation effect will be further optimized and improved.

[0021] Preferably, the charger body is provided with a dustproof mesh, which covers the opening of the heat dissipation duct.

[0022] By adopting the above technical solution, the dustproof net can reduce the possibility of dust accumulating in the heat dissipation air duct, so that the heat dissipation air duct can remain unobstructed.

[0023] Preferably, the charger body is provided with a receiving slot for the fan element, and the charger body is provided with heat dissipation holes for communicating the receiving slot with the outside of the charger body.

[0024] By adopting the above technical solution, the receiving slot allows the fan body to be housed inside the charger body, resulting in a compact structure. Furthermore, the heat dissipation holes enable the fan body to dissipate heat, thus optimizing and improving the safety of the structure during use.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. With the help of the heat-conducting element, the heat dissipated by the battery during charging can be dissipated and sent away from the heat dissipation channel by the fan element, so as to achieve efficient heat dissipation and reduce the battery temperature. The possibility of battery expansion or charging efficiency decrease is reduced, and the heat dissipation capacity of the charger is optimized and improved.

[0027] 2. The heat dissipation fins can further increase the heat dissipation area, thereby further improving the heat dissipation efficiency;

[0028] 3. The thermal pad can efficiently transfer heat to the heat-absorbing fins, thus optimizing and improving the heat dissipation effect. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the charger structure in a preferred embodiment of this application.

[0030] Figure 2 This is a schematic diagram of the assembly relationship of the charger in a preferred embodiment of this application.

[0031] Figure 3 This is a cross-sectional view of the charger in a preferred embodiment of this application.

[0032] Explanation of reference numerals in the attached diagram: 1. Charger body; 11. Battery compartment; 2. Heat dissipation duct; 3. Thermal conductive element; 31. Heat sink; 32. Heat dissipation fins; 33. Heat absorption fins; 34. Thermal pad; 4. Fan element; 5. Airflow guide plate; 6. Receiving slot; 7. Dustproof mesh; 8. Heat dissipation hole. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0034] This application discloses a charger based on a cylindrical battery.

[0035] Reference Figure 1 The charger includes a charger body 1. The charger body 1 mainly includes a housing and a charging module. The charging module is located on the housing, and contact pieces are provided on the housing. The charging module is connected to the contact pieces. The charger body 1 also has a battery compartment 11 for placing batteries. By placing the battery in the battery compartment 11, the battery terminals come into contact with the contact pieces. At this time, the battery is charged through the charging module and the contact pieces. The specific working principle of the charger will not be described in detail here.

[0036] Based on the above settings, the battery is prone to overheating during charger operation. Overheating can lead to a decrease in charging efficiency. To improve charger efficiency, refer to... Figure 2 A heat dissipation duct 2 is provided through the outer shell of the charger body 1. The heat dissipation duct 2 is used to allow airflow to pass through. When the heat dissipation duct 2 is set up, it is adjacent to the battery compartment 11. This can shorten the distance between the heat dissipation duct 2 and the battery compartment 11, thereby shortening the distance of heat transfer and reducing the difficulty of heat dissipation.

[0037] Based on this, combined Figure 3 The charger also includes a heat-conducting element 3, which is disposed on the charger body 1 and located between the heat dissipation duct 2 and the battery compartment 11. The heat-conducting element 3 is used to guide the heat in the battery compartment 11 to the heat dissipation duct 2. In addition, the charger also includes a fan element 4, which is disposed on the outer shell of the charger body 1 and located at one end of the heat dissipation duct 2. The fan element 4 is used to guide the air to circulate unidirectionally in the heat dissipation duct 2, and the airflow carries away the heat, thereby achieving the effect of ventilation and heat dissipation, and the heat dissipation capacity of the charger is optimized and improved.

[0038] Reference Figure 2 and Figure 3To optimize the airflow rate, in this embodiment, the heat dissipation duct 2 has a straight structure. Specifically, the heat dissipation duct 2 extends straight from one side of the charger body 1 to the other side, and the heat dissipation duct 2 opens on opposite sides of the charger body 1. This forms an efficient airflow structure, allowing the airflow to flow more smoothly within the heat dissipation duct 2.

[0039] Furthermore, a flow guide baffle 5 extending along the length of the heat dissipation duct 2 is provided on the inner wall of the heat dissipation duct 2. Usually, the flow guide baffle 5 is integrally connected with the outer shell, thus having a relatively stable connection. At this time, under the action of the flow guide baffle 5, the interior of the heat dissipation duct 2 can be divided into several narrow straight-flow duct sections, thus better guiding the airflow in one direction.

[0040] It is understandable that the flow guide baffle 5 can be set in multiple groups. Multiple groups of flow guide baffle 5 can be set at intervals along the width direction of the heat dissipation air duct 2, so as to form multiple narrow pen direct current channel sections, which can adapt to the flow guiding effect of the wider heat dissipation air duct 2. The specific number of flow guide baffle 5 is not limited here.

[0041] Furthermore, in order to achieve a compact structure, the charger body 1 is provided with a receiving groove 6 for the fan element 4. The fan element 4 is located in the receiving groove 6 to meet the requirements of a compact structure. In addition, in order to prevent heat from accumulating in the receiving groove 6, several heat dissipation holes 8 are also provided through the charger body 1. The heat dissipation holes 8 are used to connect the receiving groove 6 to the outside of the charger body 1 to reduce the possibility of heat accumulation of the fan element 4 in the receiving groove 6.

[0042] Optionally, to keep the heat dissipation duct 2 unobstructed, a dustproof net 7 can be fixedly installed on the charger body 1. The size of the dustproof net 7 is adapted to the size of the opening of the heat dissipation duct 2. In this way, the dustproof net 7 can cover the opening of the heat dissipation duct 2, thereby reducing the possibility of dust accumulating in the heat dissipation duct 2, so that the heat dissipation duct 2 can remain in a conductive state.

[0043] Reference Figure 3 To efficiently guide heat into the heat dissipation duct 2, the heat-conducting element 3 includes a heat sink 31. The heat sink 31 is attached to the side wall of the heat dissipation duct 2 near the battery compartment 11, and the area of ​​the heat sink 31 is larger than the width of the heat dissipation duct 2. This allows the heat sink 31 to cover the heat dissipation duct 2, with one side of the heat sink 31 exposed inside the heat dissipation duct 2. In this case, the heat sink 31 can absorb and release the heat located on one side of the battery compartment 11 into the heat dissipation duct 2. Because the heat sink 31 has a large heat dissipation area, it can efficiently guide heat into the heat dissipation duct 2.

[0044] It is understandable that the heat sink 31 can be adhered to the inner wall of the heat dissipation duct 2 by thermally conductive adhesive or molded into the outer shell by one-piece injection molding. There is no restriction on the specific setting method of the heat sink 31. In addition, the heat sink 31 is preferably made of metal, such as aluminum plate or copper plate. There is no restriction on the specific material of the heat sink 31.

[0045] Continue to refer to Figure 3 To further optimize heat transfer efficiency, heat dissipation fins 32 are provided on the heat dissipation plate 31. The heat dissipation fins 32 are usually integrally connected with the heat dissipation plate 31 and are perpendicular to the heat dissipation plate 31. On this basis, the heat dissipation fins 32 extend into the heat dissipation air duct 2. At this time, the heat dissipation fins 32 can further increase the heat dissipation area, thereby improving the heat conduction efficiency of the heat conduction element 3.

[0046] In addition, heat-absorbing fins 33 are also provided on the heat sink 31. The heat-absorbing fins 33 are also integrally connected to the heat sink 31, and the heat-absorbing fins 33 are located on the side of the heat sink 31 that is away from the heat sink fins 32. The heat-absorbing fins 33 are also perpendicular to the heat sink 31. The heat-absorbing fins 33 are embedded in the charger body 1 and extend to one side of the battery compartment 11. Based on the above configuration, the heat-absorbing fins 33 extending to one side of the battery compartment 11 can improve the efficiency of transferring the heat of the battery compartment 11 body to the heat sink 31 more evenly, and the heat conduction effect is optimized and improved.

[0047] It is understandable that the heat dissipation fins 32 and heat absorption fins 33 can be made of metals with good thermal conductivity, such as aluminum or copper, and there are no specific restrictions. In addition, there can be multiple heat dissipation fins 32 and heat absorption fins 33. By setting multiple heat dissipation fins 32 and heat absorption fins 33, the overall thermal conductivity of the heat-conducting element 3 can be further improved. Among them, multiple heat dissipation fins 32 or multiple heat absorption fins 33 can be arranged sequentially and at intervals along the width direction of the heat sink 31. The specific number of heat dissipation fins 32 and heat absorption fins 33 can be set according to actual needs and there are no restrictions.

[0048] Continue to refer to Figure 3To further conduct heat from the battery to the heat-absorbing fins 33, a thermally conductive pad 34 is provided at the bottom of the battery compartment 11. The thermally conductive pad 34 can be made of thermally conductive adhesive or a thermally conductive graphene layer; the specific material of the thermally conductive pad 34 is not limited here. The thermally conductive pad 34 is attached to the bottom of the battery compartment 11 by adhesive. Since the battery compartment 11 has a semi-circular structure, the thermally conductive pad 34 also has a semi-circular outline attached to the bottom of the battery compartment 11. When the battery is placed in the slot, the thermally conductive pad 34 can wrap around the battery, thereby increasing the contact area between the two and improving the heat exchange efficiency. In addition, the thermally conductive pad 34 is connected to the side of the heat-absorbing fins 33 away from the heat sink 31. At this time, heat is efficiently transferred from the thermally conductive pad 34 to the heat-absorbing fins 33, further optimizing and improving the heat dissipation effect.

[0049] The implementation principle of a charger based on a cylindrical battery according to an embodiment of this application is as follows: During the charging process, the battery generates heat. At this time, the heat is transferred to the heat-absorbing fins 33 through the heat-conducting pad 34, and then released into the heat dissipation duct 2 through the heat dissipation fins 32, the heat dissipation plate 31, and the heat dissipation fins 32. At this time, the heat can be carried away by the airflow, thereby achieving heat dissipation and cooling of the battery, making the battery less prone to overheating, thus maintaining an efficient and safe charging process, and optimizing and improving the heat dissipation capacity of the charger.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cylindrical battery-based charger, comprising a charger body (1), a battery compartment (11) is arranged at the charger body (1) for placing a battery, characterized in that: Also includes: A fan element (4) is provided on the charger body (1), and a heat dissipation duct (2) is provided through it. The heat dissipation duct (2) is arranged adjacent to the battery compartment (11). The fan element (4) is located on the charger body (1) and is used to guide air to circulate unidirectionally in the heat dissipation duct (2). And a heat-conducting element (3) is provided on the charger body (1) and located between the heat dissipation duct (2) and the battery compartment (11) to guide the heat in the battery compartment (11) into the heat dissipation duct (2); The heat dissipation duct (2) extends straight from one side of the charger body (1) to the other side, and the heat dissipation duct (2) opens on opposite sides of the charger body (1). A flow guide baffle (5) extending along the length direction of the heat dissipation duct (2) is provided on the inner wall of the heat dissipation duct (2). The flow guide baffle (5) is provided in multiple sets, and the multiple sets of flow guide baffles (5) are spaced apart along the width direction of the heat dissipation duct (2). The heat-conducting element (3) includes a heat sink (31), which covers the heat dissipation duct (2), and one side of the heat sink (31) is exposed inside the heat dissipation duct (2). The heat sink (31) is provided with heat dissipation fins (32), which extend into the heat dissipation duct (2); The heat sink (31) is provided with heat-absorbing fins (33), which are embedded in the charger body (1) and extend to one side of the battery compartment (11); The specific number of heat dissipation fins (32) and heat absorption fins (33) is multiple, and multiple heat dissipation fins (32) or multiple heat absorption fins (33) are arranged sequentially at intervals along the width direction of the heat dissipation plate (31); A thermally conductive pad (34) is provided at the bottom of the battery compartment (11). The thermally conductive pad (34) is used to wrap the battery and is connected to the heat-absorbing fins (33).

2. A cylindrical cell based charger according to claim 1, characterized in that: The charger body (1) is provided with a dustproof net (7), which covers the opening of the heat dissipation duct (2).

3. A cylindrical cell based charger as claimed in claim 1, wherein: The charger body (1) is provided with a receiving groove (6) for the fan element (4) to be installed, and the charger body (1) is provided with a heat dissipation hole (8) for communicating the receiving groove (6) with the outside of the charger body (1).

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