WO2024250760A1 - Power bank capable of realizing alternating-current charging - Google Patents

Abstract

The present utility model relates to a power bank capable of realizing alternating-current charging, the power bank comprising a bottom shell provided with an accommodating cavity, and an upper cover arranged on the accommodating cavity, wherein a battery area and a circuit control area are provided in the accommodating cavity in a horizontal direction by means of a partition plate; a rechargeable battery is mounted in the battery area, a control circuit board is placed on the inner side of the circuit control area, and an alternating-current charger is integrated on the control circuit board; a rotatably folded AC pin is provided on the bottom of the bottom shell at the position corresponding to the position of the alternating current charger; and a charging wire passing out of the bottom shell is also connected to the control circuit board, and a charging plug is provided at a free end of the charging wire. According to the utility model, a charger is integrated in the power bank, which facilitates use of the power bank; moreover, effective isolation of a creepage distance is achieved by means of partition arrangement, and mutual influence of heat dissipation between main components is avoided, thereby improving the heat dissipation efficiency; and the control circuit board which is laterally placed enables full use of the space of the accommodating cavity, miniaturizing the product.

Description

A power bank capable of AC charging Technical Field

The utility model relates to the field of mobile power supplies, in particular to a power bank capable of AC charging.

Background Art

A power bank, also known as a mobile power source, is a device that helps people charge portable electronic devices outdoors for emergency use.

Technical issues

The existing power bank does not have an AC charging function. An external charger is required to charge the power bank. The mobile phone can only be charged after the power is stored. The power bank cannot be charged without a charger, which is not conducive to use. At the same time, in the existing power bank, the internal space of the power bank shell is not reasonably utilized. The circuit board, battery and other components are mixed together. The circuit board is placed horizontally, and the battery is arranged on it. The thickness of the power bank is the sum of the thickness of the circuit board and the thickness of the battery. Especially for cylindrical batteries such as 18650, the thickness of the power bank will be greatly increased. There is no partition between the circuit board and the battery. The heat dissipation efficiency of these components is different during the charging and discharging process, which will affect each other, and then affect the service life of the power bank; if a charger is set in the power bank without a reasonable structural setting, the thickness of the charger will further increase the thickness of the power bank, which is not fully utilized.

Technical Solutions

In view of the existing deficiencies, the utility model provides a power bank capable of AC charging.

The technical solution adopted by the utility model to solve its technical problems is: a power bank capable of AC charging, comprising a bottom shell provided with a accommodating cavity and an upper cover arranged on the accommodating cavity, wherein the accommodating cavity is horizontally divided into a battery area and a circuit control area by a partition, a rechargeable battery is installed in the battery area, a control circuit board electrically connected to the rechargeable battery is placed on the inner side of the circuit control area, and an AC charger is integrated on the control circuit board; an AC plug that can be rotatably and folded and electrically connected to the AC charger is provided at the bottom of the bottom shell at a position corresponding to the AC charger; a charging cable that passes through the bottom shell is also connected to the control circuit board, and a charging plug is provided at the free end of the charging cable.

Furthermore, a card slot for engaging the charging cable is also provided on the bottom surface of the accommodating cavity; a first through hole for the charging cable to pass through is provided on the side wall of the bottom shell, and the axis line of the first through hole is perpendicular to the extension direction of the card slot; a positioning piece is also provided in the accommodating cavity, a waist-shaped second through hole is provided on the side wall of the bottom shell, and a positioning piece groove for inserting a matching charging plug is provided on the positioning piece opposite to the second through hole.

Furthermore, a first baffle and a second baffle are arranged at a position corresponding to the first through hole in the accommodating cavity, which are perpendicular to the axis of the first through hole and spaced apart and arranged in parallel, and the spacing space between the first baffle and the second baffle forms a card slot.

Furthermore, the second baffle is an L-shaped baffle adjacent to the first through hole.

Furthermore, a positioning mechanism is provided between the groove wall of the positioning member groove and the charging plug.

Furthermore, the positioning mechanism is an elastically deformable positioning protrusion arranged on the groove wall of the positioning member groove adjacent to the opening edge of the positioning member groove.

Furthermore, notches are provided on the groove wall of the positioning member groove on both sides of the positioning protrusion, and the positioning protrusion is a protrusion integrally formed with the positioning member groove.

Furthermore, a charging interface, a discharging interface, and a control switch for electrically connecting the control circuit board are also provided on the side wall of the bottom shell.

Furthermore, the control circuit board includes a main circuit board arranged on its side and an auxiliary circuit board electrically connected to the main circuit board, the AC charger is arranged on the main circuit board, the rechargeable battery and the control switch are electrically connected to the main circuit board, and the charging line, the charging interface and the discharge interface are all electrically connected to the auxiliary circuit board.

Furthermore, a transparent decorative shell is detachably provided on the upper cover.

Beneficial Effects

The beneficial effect of the utility model is that the utility model integrates the AC charger on the control circuit board, and the control circuit board is arranged sideways in the bottom shell, so that the AC charger and the control circuit board are both arranged sideways in the bottom shell, reducing the thickness of the power bank, and the space corresponding to the AC charger in the bottom shell in the horizontal direction can be used to set the rechargeable battery, so that the rechargeable battery and the AC charger are arranged in parallel, which also reduces the horizontal width of the power bank, makes full use of the space of the accommodating cavity, makes the product miniaturized, and facilitates the use of the power bank. At the same time, the rechargeable battery and the control circuit board are arranged in different zones through the partition setting. Due to the setting of the partition, the heat dissipation of the control circuit board and the AC charger and the heat dissipation of the rechargeable battery are not affected by each other, thereby improving the heat dissipation efficiency, and also effectively isolates the creepage distance between the rechargeable battery and the control circuit board.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a cross-sectional structure of an embodiment of the utility model cut along a charging line;

FIG2 is a schematic diagram of the structure of an embodiment of the utility model;

FIG3 is a schematic diagram of the structure of an embodiment of the utility model without the upper cover and the decorative shell;

FIG4 is a schematic diagram of the structure of the bottom shell of an embodiment of the utility model;

5 is a schematic structural diagram of a positioning member according to an embodiment of the utility model;

Names and serial numbers of parts in the figure: 1- bottom shell 10- partition 11- battery area 12- circuit control area 13- slot 130- first baffle 131- second gear lever 14- first through hole 15- second through hole 16- charging interface 17- discharge interface 18- control switch 2- upper cover 3- rechargeable battery 4- control circuit board 40- AC charger 41- main circuit board 42- auxiliary circuit board 5- AC pin 6- charging cable 60- charging plug 7- positioning piece 70- positioning piece groove 8- positioning protrusion 80- notch 9- decorative shell.

Embodiments of the present invention

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. In addition, the directional terms mentioned in the utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", etc., are only referenced to the directions of the attached diagrams. The directional terms used are for better and clearer explanation and understanding of the utility model, rather than indicating or implying the orientation that the utility model must have, and therefore cannot be understood as a limitation on the utility model.

As shown in Figures 1 to 5, an AC charging treasure comprises a bottom shell 1 provided with a receiving cavity, and an upper cover 2 provided on the receiving cavity. The upper cover 2 is provided on the receiving cavity to close the receiving cavity. At this time, the upper cover 2 can be a cover that matches the size of the receiving cavity and only covers the receiving cavity, or it can be a cover of the same size as the bottom shell 1. While covering the receiving cavity, the surface of the bottom shell 1 corresponding to the opening of the receiving cavity is also covered. A battery area 11 and a circuit control area 12 are separated in the receiving cavity by a partition 10 in the horizontal direction. While separating the receiving cavity, it also acts as a reinforcing rib, thereby improving the structural strength of the bottom shell 1. The partition 10 is arranged in the horizontal direction, such as along the left-right direction of the receiving cavity, or the front-back direction, or in the left-right direction and the front direction. The rear direction is set at the same time, such as setting the partition 10 in an H-shaped structure, so that the accommodating cavity is divided into four areas, namely the first area on the left, the second area on the middle rear side, the third area on the middle front side and the fourth area on the right. At this time, the rechargeable battery 3 is set in the second area, and the control circuit board 4 is set on the side in the third area and close to the cavity wall of the accommodating cavity. The AC charger 40 integrated on the control circuit board 4 is in the first area. When the control circuit board 4 is divided into a main circuit board 41 and an auxiliary circuit board 42, the main circuit board 41 is set in the third area, and the auxiliary circuit board 42 is set in the fourth area. The rechargeable battery 3 is installed in the battery area 11. The rechargeable battery 3 is a lithium-ion battery, such as 18650 and 21700 cylindrical lithium batteries, which can greatly reduce the use of the charger of this battery. The thickness of the power bank is reduced. A control circuit board 4 electrically connected to the rechargeable battery 3 is placed inside the circuit control area 12. The creepage distance between the rechargeable battery 3 and the control circuit board 4 is effectively isolated by the partition 10. The heat dissipation of the control circuit board 4 and the AC charger 40 and the heat dissipation of the rechargeable battery 3 are not affected by each other, thereby improving the heat dissipation efficiency. The control circuit board 4 is integrated with the AC charger 40, which is integrated on the control circuit board 4 and forms an L-shaped structure with the control circuit board 4. After the control circuit board 4 is placed sideways in the accommodating cavity, the AC charger 40 is also in a sideways state, thereby reducing the thickness of the power bank. The space corresponding to the AC charger 40 in the accommodating cavity in the horizontal direction can be used to arrange the rechargeable battery 3, so that the rechargeable battery 3 and the AC charger 40 are arranged in parallel, which reduces the width of the power bank in the horizontal direction, makes full use of the space of the accommodating cavity, makes the product miniaturized, and facilitates the use of the power bank; the bottom of the bottom shell 1 is provided with an AC plug 5 that can be rotatably folded and electrically connected to the AC charger 40 at a position corresponding to the AC charger 40. When in use, the AC plug 5 is unfolded and plugged into the mains socket to charge the power bank. After charging is completed, the AC plug 5 is rotated and folded and stored in the bottom of the bottom shell 1; the control circuit board 4 is also connected to a charging line 6 that passes through the bottom shell 1, and a charging plug 60 is provided at the free end of the charging line 6. After the device to be charged is connected through the charging plug 60, the device to be charged can be charged. The charging plug 60 adopts any one of type C, lighting or mini USB connectors according to different usage requirements. With such a structure, when the power bank is charged by the AC charger 40, the heating element of the AC charger 40 relies on the control circuit board 4 to dissipate heat. Since a partition 10 is provided between the battery area 11 and the circuit control area 12, the rechargeable battery 3 in the battery area 11 will not be affected by the heat generated by the AC charger 40. When the power bank is charging the electronic device to be charged, the rechargeable battery 3 dissipates heat independently. Due to the provision of the partition 10, the heat dissipation of the control circuit board 4 will not affect the heat dissipation of the rechargeable battery 3, thereby effectively reducing the product temperature and the bottom shell temperature.

Furthermore, as shown in Figures 1, 3 and 4, the bottom surface of the accommodating cavity is also provided with a card slot 13 for engaging the charging cable 6; a first through hole 14 corresponding to the charging cable 6 is provided on the side wall of the bottom shell 1, and the axis line of the first through hole 14 is perpendicular to the extension direction of the card slot 13; a positioning member 7 is also provided in the accommodating cavity, and a waist-shaped second through hole 15 is provided on the side wall of the bottom shell 1, and a positioning member groove 70 is provided on the positioning member 7 for inserting a matching charging plug 60 opposite to the second through hole 15. The positioning member 7 and the card slot 13 are arranged in parallel and spaced apart in the accommodating cavity, so that the charging line 6 connected to the control circuit board 4 can be engaged in the card slot 13 in the accommodating cavity to be fixed. The card slot 13 is opposite to the first through hole 14 in the accommodating cavity, so that it is convenient for the charging line 60 to pass through the card slot 13 and then pass through the first through hole 11. The direction of the card slot 13 is perpendicular to the axial direction of the first through hole 14. In this way, when the charging line 6 passes through the card slot 13 and then passes through the first through hole 14, an S-shaped routing is formed, so that It is more resistant to external tension, and will not affect its connection with the control circuit board 4, thereby improving the safety of the product; it avoids the connection between the charging cable 6 and the control circuit board 4 from being broken when the charging cable 6 is pulled outside the bottom shell 1, thereby enhancing the tolerance of the charging cable 6 to the external tension; the charging plug 60 is inserted into the positioning member groove 70 to hide the charging plug 60 in the bottom shell 1, thereby avoiding the charging plug 60 being exposed to the outside and damaged by other components. When it is needed, the charging plug 60 can be pulled out of the positioning member groove 70. At this time, the first through hole 14 is set to a corresponding shape according to the shape of the charging cable 60 used. For example, if the charging cable 60 is a flat charging cable, the first through hole 14 is set to a waist-shaped through hole. If the charging cable 40 is a round one, the first through hole is set to a round through hole, so that the charging cable 60 can be well confined in the first through hole, thereby avoiding the charging cable from rubbing against the edge of the first through hole 14 and causing damage to the charging cable. The second through hole 15 is set to a waist-shaped through hole, thereby facilitating the insertion of the charging plug.

As for the structure of the card slot, as shown in the figure, the position corresponding to the first through hole 14 in the bottom shell 1 is provided with a first baffle 130 and a second baffle 131 which are perpendicular to the axis of the first through hole 14 and are spaced and arranged in parallel, and the interval space between the first baffle 13 and the second baffle 14 forms the card slot 13. The first baffle 130 constitutes a partition on the other side of the battery area 11, separating the charging line 6, and when the charging interface 42, the discharge interface 2 and the auxiliary circuit board 42 are provided, the charging interface 16, the discharge interface 18 and the auxiliary circuit board 42 are separated from the battery area 11. At this time, the second baffle 131 is a baffle with an L-shaped structure adjacent to the first through hole 14, which enhances the strength of the second baffle 14 structure, thereby increasing the strength of the force acting on the second baffle when the charging line 6 is subjected to force, and thus increasing the strength of the charging line to withstand external forces.

As shown in the figure, a positioning mechanism is provided between the groove wall of the positioning member groove 70 and the charging plug 60. The charging plug 60 is fixed in the positioning member groove 70 by the positioning mechanism, so that the charging cable 6 can be used as a handle, which simplifies the product structure, solves the problem of complication of the power bank structure caused by the separate handle on the power bank, and reduces the cost. At this time, in order to facilitate the lifting of the handle, the charging cable is a flat charging cable, and the first through hole is a waist-shaped through hole;

As for the positioning mechanism for the charging plug 6 to engage in the positioning groove 70, the positioning mechanism is an elastically deformable positioning protrusion 8 arranged on the groove wall of the positioning groove 70 adjacent to the opening edge of the positioning groove 70. The positioning protrusion 8 is arranged at the opening end of the positioning groove 70. When the charging plug 60 is inserted into the positioning groove 70, the charging plug 60 squeezes the positioning protrusion 8 to cause the positioning protrusion 8 to deform. After the charging plug 60 is fully inserted into the positioning groove 70, the positioning protrusion 8 returns to its initial unstressed state, thereby positioning the charging plug 60 in the positioning groove 70. When the charging plug needs to be used, the charging plug 60 is pulled out with force, and the positioning protrusion 8 is elastically deformed again, and the charging plug 60 returns to its initial state after being pulled out. At this time, for the positioning protrusion 8, one way is to use a rubber material; another way is that notches 80 are provided on the groove wall of the positioning member groove 70 on both sides of the positioning protrusion 8. The positioning protrusion 8 is a protrusion integrally formed with the positioning member groove 70, so that a mountain-shaped structure is formed. The groove wall portion of the positioning member groove 70 where the positioning protrusion 8 is located forms an elastic portion. When the charging plug 60 is squeezed onto the positioning protrusion 8, the groove wall portion of the positioning member groove 70 where the positioning protrusion 8 is located can be offset to the outside of the positioning member groove 70 relative to other parts of the groove wall of the positioning member groove 80, thereby avoiding the insertion of the charging plug 60. After that, after the charging plug 60 is inserted into the positioning member groove 70, the positioning protrusion 8 returns to its initial state to position the charging plug.

Further, as shown in FIG3 , the side wall of the bottom shell 1 is also provided with a charging interface 16, a discharging interface 17, and a control switch 18 electrically connected to the control circuit board 4. The charging interface 16, the discharging interface 17, the first through hole 14, and the second through hole 15 can be arranged on the same side of the bottom shell 1 to avoid reducing the structural strength of the bottom shell 1 by setting them on multiple sides. At this time, the first through hole 14 and the second through hole 15 are arranged at the two corners of the side, and the charging interface 16 and the discharging interface 17 are arranged in the middle of the side to facilitate the charging line 6 to be pulled as a handle. The control circuit board 4 includes a main circuit board 41 arranged sideways, an auxiliary circuit board 42 electrically connected to the main circuit board 41, an AC charger 40 is arranged on the main circuit board 41, a rechargeable battery 3, a control switch 18 are electrically connected to the main circuit board 41, and the charging line 6, the charging interface 16, and the discharging interface 17 are all electrically connected to the auxiliary circuit board 42, so that the structure in the accommodating cavity can be made more compact and the space in the accommodating cavity can be used more reasonably.

Further, as shown in FIG. 2 , a transparent decorative shell 9 is detachably provided on the upper cover 2. The decorative shell 9 is transparent, so decorative parts such as decorative paintings or photos can be arranged between the decorative shell 9 and the upper cover 2 according to the user's preference. The detachable structure adopts a snap-fit structure, that is, a snap-fitting foot is provided on the decorative shell 9, and a snap-fitting foot slot that can match the snap-fitting foot is provided on the shell 1.

Although the utility model has been described in detail above with general descriptions and specific implementation schemes, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims (10)

A power bank capable of AC charging, characterized in that it comprises a bottom shell provided with a accommodating cavity and an upper cover arranged on the accommodating cavity, wherein the accommodating cavity is horizontally separated by a partition into a battery area and a circuit control area, a rechargeable battery is installed in the battery area, a control circuit board electrically connected to the rechargeable battery is placed on the inner side of the circuit control area, and an AC charger is integrated on the control circuit board; a rotatable and foldable AC pin electrically connected to the AC charger is provided at the bottom of the bottom shell at a position corresponding to the AC charger; a charging cable passing through the bottom shell is also connected to the control circuit board, and a charging plug is provided at the free end of the charging cable. According to the power bank capable of AC charging as described in claim 1, it is characterized in that: the bottom surface of the accommodating cavity is also provided with a card slot for engaging the charging cable; the side wall of the bottom shell is provided with a first through hole corresponding to the charging cable passing through, and the axis line of the first through hole is perpendicular to the extension direction of the card slot; a positioning piece is also provided in the accommodating cavity, a waist-shaped second through hole is provided on the side wall of the bottom shell, and the positioning piece is provided with a positioning piece groove for inserting a matching charging plug opposite to the second through hole. According to the AC charging power bank of claim 2, it is characterized in that: a first baffle and a second baffle are arranged perpendicular to the axis of the first through hole and spaced apart and parallel to each other at a position corresponding to the first through hole in the accommodating cavity, and the spacing space between the first baffle and the second baffle forms a card slot. According to the AC charging power bank of claim 3, it is characterized in that: the second baffle is an L-shaped baffle adjacent to the first through hole. According to the AC charging power bank of claim 2, it is characterized in that a positioning mechanism is provided between the groove wall of the positioning member groove and the charging plug. According to the AC charging power bank of claim 5, the feature is that the positioning mechanism is an elastically deformable positioning protrusion arranged on the groove wall of the positioning member groove adjacent to the opening edge of the positioning member groove. According to the AC charging power bank of claim 6, it is characterized in that: notches are provided on the groove wall of the positioning member groove on both sides of the positioning protrusion, and the positioning protrusion is a protrusion integrally formed with the positioning member groove. According to the AC charging power bank of claim 1, it is characterized in that: a charging interface, a discharging interface, and a control switch for electrically connecting the control circuit board are also provided on the side wall of the bottom shell. According to the power bank capable of AC charging as described in claim 8, it is characterized in that: the control circuit board includes a main circuit board arranged on its side and an auxiliary circuit board electrically connected to the main circuit board, the AC charger is arranged on the main circuit board, the rechargeable battery and the control switch are electrically connected to the main circuit board, and the charging line, the charging interface and the discharge interface are all electrically connected to the auxiliary circuit board. The AC charging power bank according to claim 1 is characterized in that: a transparent decorative shell is detachably provided on the upper cover.