A multi-purpose lithium ion battery charger

Abstract

The utility model provides a multi -purpose lithium ion battery charger, including casing, the circuit board of setting in casing and the battery group of power supply for circuit board, its characterized by: casing includes upper cover and lower cover, is provided with the first charging boss who is used for installing electric tool charging interface and is used for installing the second charging boss of USB charging mouth with the circuit board connection on the upper cover, is provided with the fixed structure for fixing electric tool on the first charging boss, set up the first charging boss who is used for installing electric tool charging interface and the second charging boss who is used for installing USB charging mouth on the upper cover, can realize the charging of two different types of battery simultaneously, satisfy more charging demand.

Description

Technical Field

[0001] This utility model relates to the technical field of lithium-ion batteries, and in particular to a multi-purpose lithium-ion battery charger. Background Technology

[0002] Lithium-ion batteries primarily function by the movement of lithium ions between the positive and negative electrodes. During charging and discharging, Li+ ions repeatedly insert and extract between the two electrodes: during charging, Li+ ions extract from the positive electrode, pass through the electrolyte, and insert into the negative electrode, leaving the negative electrode in a lithium-rich state; the reverse occurs during discharging.

[0003] Existing lithium-ion battery chargers typically can only charge one type of battery, and cannot charge multiple types of batteries, resulting in poor versatility. Utility Model Content

[0004] The present invention aims to provide a multi-purpose lithium-ion battery charger that can charge two different types of batteries, thereby meeting more charging needs.

[0005] Therefore, the technical solution adopted by this utility model is as follows: a multi-purpose lithium-ion battery charger, including a housing, a circuit board disposed in the housing, and a battery pack for powering the circuit board. The housing includes an upper cover and a lower cover. The upper cover is provided with a first charging protrusion for installing a power tool charging interface and a second charging protrusion for installing a USB charging port, which are connected to the circuit board. The first charging protrusion is provided with a fixing structure for fixing the power tool.

[0006] As a preferred embodiment of the above solution, the fixing structure includes sliding blocks disposed on both sides of the first charging protrusion, a sliding groove for sliding of the sliding blocks is provided in the first charging protrusion, pressing blocks disposed on both sides of the second charging protrusion are fixedly connected to the two sliding blocks respectively, a sliding cavity for sliding of the pressing blocks is provided in the second charging protrusion, and a reset spring is provided between the two pressing blocks.

[0007] More preferably, the side of the sliding block near the power tool charging interface is provided with a chamfer, which is used to push the sliding block to slide into the groove.

[0008] More preferably, the upper cover and the lower cover are connected by a connecting structure, the connecting structure including a connecting strip on the upper edge of the lower cover and a connecting groove on the lower edge of the upper cover, a plurality of fixing posts are provided inside the lower cover along the edge of the lower cover, and a connecting post matching the fixing post is provided inside the upper cover, the front end of the connecting post being inserted into the fixing post.

[0009] More preferably, the first charging protrusion is provided with a limiting rod for limiting the sliding position of the sliding block, and the second charging protrusion is provided with a baffle for limiting the movement position of the pressing block.

[0010] More preferably, the sliding block is L-shaped, with the horizontal section parallel to the first charging protrusion, the vertical section located outside the first charging protrusion as a pressing part, and an installation groove for installing a limiting rod on the horizontal section.

[0011] More preferably, an indicator light for displaying the remaining battery level is provided above the USB charging port.

[0012] More preferably, the number of fixed posts and connecting posts is four, and the fixed posts and connecting posts are respectively provided with reinforcing ribs that connect to the lower cover and the upper cover.

[0013] The beneficial effects of this utility model are as follows: By providing a first charging protrusion for installing a power tool charging interface and a second charging protrusion for installing a USB charging port on the top cover, it is possible to charge two different types of batteries simultaneously, thus meeting more charging needs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a partial enlarged view of the present invention.

[0016] Figure 3 This is a schematic diagram of the battery pack in this utility model.

[0017] Figure 4 This is a partial sectional view of the present invention.

[0018] Figure 5 This is a schematic diagram of the adjustable limiting structure in this utility model. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1-5As shown, a multi-purpose lithium-ion battery charger includes a housing, a circuit board 3 disposed inside the housing, and a battery pack 4 (the battery pack 4 uses a rechargeable lithium-ion battery, which is prior art and will not be described in detail here) that powers the circuit board 3. The housing includes an upper cover 1 and a lower cover 2. Two lithium-ion batteries disposed on the upper and lower cover form a group. Multiple battery packs 4 are arranged horizontally inside the lower cover 2 (five battery packs 4 are connected in series in this embodiment). The battery packs 4 are mounted inside the lower cover 2 via a mounting bracket 16. A circuit interface 17 connected to the positive and negative terminals of the battery packs 4 is mounted on the mounting bracket 16. The circuit board 3 is connected to the mounting bracket 16 and is disposed above the mounting bracket 16 and connected to the circuit interface 17. Multiple fixing blocks for fixing the mounting bracket 16 are disposed below the mounting bracket 16. A limiting baffle 18 for limiting the fixing blocks is disposed inside the lower cover 2. Two limiting baffles 18 disposed at intervals form a group for fixing one fixing block. The mounting bracket 16 has a fixing groove 19 on its upper part for mounting fixing blocks. The fixing blocks are installed in the fixing groove 19, and the mounting bracket 16 can be stacked to fix the battery pack 4 arranged vertically in this embodiment.

[0021] The fixing block consists of a mounting groove 20 located below the mounting bracket 16 and a slider 21 connected to the mounting groove 15. When stacking two mounting brackets 16, the upper mounting bracket 16 is first placed on top of the lower mounting bracket 16, and the mounting groove 15 of the upper mounting bracket 16 is aligned with the fixing groove 19 of the lower mounting bracket 16. The fixing block of the upper mounting bracket 16 is then inserted into the mounting groove 15. During the insertion process, the fixing block of the upper mounting bracket 16 is also inserted into the fixing groove 19 of the lower mounting bracket 16, thus achieving the stacking and fixing of the two mounting brackets 16. The slider 21 of the lower mounting bracket 16 is first inserted into the mounting groove 15, and then it is placed downwards between two limit baffles 18 spaced apart to fix the mounting bracket 16.

[0022] The top cover 1 has a first charging protrusion 5 for mounting a power tool charging interface and a second charging protrusion 6 for mounting a USB charging port, both connected to the circuit board 3. An indicator light 14 above the USB charging port indicates the remaining battery level. The two different types of charging ports allow for multiple uses of the charger, enabling simultaneous charging of multiple devices and making it more convenient to use. The indicator light 14 shows the remaining battery level, prompting the user to charge promptly and ensuring normal operation. The circuit board 3 is positioned above the upper mounting bracket 16.

[0023] The first charging protrusion 5 is provided with a fixing structure for fixing the power tool. The fixing structure includes sliding blocks 7 on both sides of the first charging protrusion 5. The first charging protrusion 5 is provided with a groove for sliding the sliding blocks 7. The side of the sliding block 7 near the power tool charging interface is provided with a chamfer to push the sliding block 7 into the groove. Pressing blocks 8 on both sides of the second charging protrusion 6 are fixedly connected to the two sliding blocks 7 respectively. The second charging protrusion 6 is provided with a sliding cavity for sliding the pressing blocks 8. A return spring (not shown in the figure) is provided between the two pressing blocks 8. The first charging protrusion 5 is provided with a limiting rod 13 for limiting the sliding position of the sliding blocks 7. The second charging protrusion 6 is provided with a baffle (not shown in the figure) for limiting the movement position of the pressing blocks 8. The baffle is vertically fixed to the lower surface of the upper cover 1. A baffle is provided on the left and right sides of the upper cover 1 respectively.

[0024] When charging the power tool, insert the power tool into the power tool charging port. During insertion, the power tool presses against the sliding block 7 via the chamfer on the sliding block 7, causing it to slide into the groove. After the sliding block 7 enters the interior of the first charging protrusion 5, it deforms the return spring. The return spring then returns to its original shape, thereby applying a force to the sliding block 7 to move it outward from the first charging protrusion 5, thus fixing the power tool in place. When the power tool is fully charged, press the pressing block 8 into the second charging protrusion 6 to remove it. Once the sliding block 7 separates from the power tool, the power tool can be removed.

[0025] The movement distance of the sliding block 7 and the pressing block 8 is limited by the limiting rod 13 set in the first charging protrusion 5, the baffle (not shown in the figure) set in the second charging protrusion 6, and the reset spring set between the two sliding blocks 7 and the two pressing blocks 8. If the reset spring is not set, the sliding block 7 and the pressing block 8 cannot pop out when fixing or disassembling the power tool. To fix the power tool, the sliding block 7 and the pressing block 8 need to be pulled out manually.

[0026] The sliding block 7 is L-shaped, with its horizontal section parallel to the first charging protrusion 5 and its vertical section positioned outside the first charging protrusion 5 as a pressing part. A mounting groove 15 for mounting the limiting rod 13 is provided on the horizontal section. Inside the upper cover 1, there is a mounting plate for mounting the sliding block 7 and the pressing block 8. The mounting plate has mounting posts connected to the upper cover 1, which fix the mounting plate below the upper cover 1. The limiting rod 13 on the mounting plate limits the sliding block 7, and a baffle on the upper cover 1 limits the pressing block 8. Multiple fixing ribs are provided on the mounting plate for contact with the sliding block 7 and the pressing block 8. These fixing ribs reduce friction during sliding, making the sliding smoother.

[0027] The upper cover 1 and the lower cover 2 are connected by a connecting structure, which includes a connecting strip 9 on the upper edge of the lower cover 2 and a connecting groove 10 on the lower edge of the upper cover 1. Multiple fixing posts 11 are arranged along the edge of the lower cover 2 inside the lower cover 2, and connecting posts 12 that match the fixing posts 11 are arranged inside the upper cover 1. The front end of the connecting post 12 is inserted into the fixing post 11. There are four fixing posts 11 and four connecting posts 12. Reinforcing ribs that connect to the lower cover 2 and the upper cover 1 are respectively provided on the fixing posts 11 and the connecting posts 12. The upper cover 1 and the lower cover 2 are fixed by the matching between the connecting strip 9 and the connecting groove 10, and between the fixing posts 11 and the connecting posts 12, ensuring the firmness of the upper cover 1 and the lower cover 2. The reinforcing ribs on the fixing posts 11 and the connecting posts 12 ensure their strength.

[0028] A fixing structure is set on the first charging protrusion 5. A reset spring is set between the two pressing blocks 8. When the sliding block 7 slides into the first charging protrusion 5, it drives the pressing block 8 to move together. The reset spring undergoes elastic deformation. The force of the reset spring to restore elastic deformation ensures that the power tool is fixed during charging. A USB charging port is set on the second charging protrusion 6 to enable simultaneous charging of two types of batteries, which improves versatility.

[0029] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A multi-purpose lithium-ion battery charger, comprising a housing, a circuit board (3) disposed within the housing, and a battery pack (4) supplying power to the circuit board (3), characterized in that: The housing includes an upper cover (1) and a lower cover (2). The upper cover (1) is provided with a first charging protrusion (5) for installing a power tool charging interface and a second charging protrusion (6) for installing a USB charging port, which are connected to the circuit board (3). The first charging protrusion (5) is provided with a fixing structure for fixing the power tool.

2. A multi-purpose lithium-ion battery charger according to claim 1, characterized in that: The fixing structure includes sliding blocks (7) disposed on both sides of the first charging protrusion (5), a sliding groove for sliding of the sliding block (7) is provided in the first charging protrusion (5), and pressing blocks (8) disposed on both sides of the second charging protrusion (6) are fixedly connected to the two sliding blocks (7), a sliding cavity for sliding of the pressing block (8) is provided in the second charging protrusion (6), and a reset spring is provided between the two pressing blocks (8).

3. A multi-purpose lithium-ion battery charger according to claim 2, characterized in that: The sliding block (7) has a chamfer on the side near the power tool charging interface, which is used to push the sliding block (7) to slide into the groove.

4. A multi-purpose lithium-ion battery charger according to claim 1, characterized in that: The upper cover (1) and the lower cover (2) are connected by a connecting structure. The connecting structure includes a connecting strip (9) on the upper edge of the lower cover (2) and a connecting groove (10) on the lower edge of the upper cover (1). Multiple fixing posts (11) are provided inside the lower cover (2) along the edge of the lower cover (2). A connecting post (12) matching the fixing post (11) is provided inside the upper cover (1). The front end of the connecting post (12) is inserted into the fixing post (11).

5. A multi-purpose lithium-ion battery charger according to claim 2, characterized in that: The first charging protrusion (5) is provided with a limiting rod (13) for limiting the sliding position of the sliding block (7), and the second charging protrusion (6) is provided with a baffle for limiting the movement position of the pressing block (8).

6. A multi-purpose lithium-ion battery charger according to claim 5, characterized in that: The sliding block (7) is L-shaped, with the horizontal section parallel to the first charging protrusion (5) and the vertical section located outside the first charging protrusion (5) as a pressing part. The horizontal section has an installation groove (15) for installing the limiting rod (13).

7. A multi-purpose lithium-ion battery charger according to claim 1, characterized in that: An indicator light (14) is provided above the USB charging port to indicate the remaining battery level.

8. A multi-purpose lithium-ion battery charger according to claim 4, characterized in that: The number of fixed columns (11) and connecting columns (12) are four in total. The fixed columns (11) and connecting columns (12) are respectively provided with reinforcing ribs that connect to the lower cover (2) and the upper cover (1).

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