Charger for battery pack of electric tool

Abstract

The utility model belongs to the field of batteries, and relates to a charger for a battery pack of an electric tool. The charger for the battery pack of the electric tool comprises a shell, a sliding groove is formed in the surface of the shell, and a universal interface connected with a power source or electronic equipment is formed in the end, away from the sliding groove, of the shell in the extending direction of the sliding groove; the connecting piece is arranged on the shell, and when the battery pack slides to a first preset position along the sliding groove, the battery pack is electrically connected with the connecting piece; and the circuit control board is arranged along the height direction of the shell, is parallel to the extension direction of the sliding chute, is electrically connected with the universal interface and the connecting piece respectively, and controls the battery pack to be switched between a charging mode and a discharging mode. The charger for the battery pack of the electric tool can reduce the carrying burden of a user.

Description

Technical Field

[0001] This utility model belongs to the field of batteries and relates to a charger for a battery pack of power tools. Background Technology

[0002] Power tool battery packs are primarily used to provide stable power for various power tools. With technological advancements, the performance and reliability of power tool battery packs have significantly improved, enabling them to maintain good performance even under high-intensity working environments.

[0003] However, there are some issues with the charger used to charge the battery pack. The charger requires a compatible charging cable, and users must carry a dedicated charging cable when working outdoors to ensure the battery pack can be charged promptly.

[0004] Secondly, in modern life, electronic devices such as smartphones and tablets have become indispensable. When users are out working, in addition to carrying the charging cable for the battery pack charger, they also need to carry a separate power bank to meet the charging needs of other electronic devices. This increases the burden and inconvenience on users. Utility Model Content

[0005] The purpose of this invention is to provide a charger for the battery pack of power tools that reduces the burden on users.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a charger for a battery pack of power tools, comprising:

[0007] The housing has a groove on its surface, and along the extending direction of the groove, a universal interface for connecting to a power supply or electronic device is formed at the end of the housing away from the groove.

[0008] A connector is provided on the housing. When the battery pack slides along the groove to a first preset position, the battery pack and the connector are electrically connected.

[0009] A circuit control board is disposed along the height direction of the housing and parallel to the extension direction of the slide groove. The circuit control board is electrically connected to the universal interface and the connector respectively. The circuit control board controls the battery pack to switch between charging and discharging modes.

[0010] Furthermore, the general interface is a Type-C interface.

[0011] Furthermore, there is at least one such general interface.

[0012] Furthermore, the inner wall of the slide is provided with a guide protrusion, which cooperates with the guide groove on the battery pack to ensure that the battery pack can slide smoothly to the first preset position.

[0013] Furthermore, elastic buckles are provided on both sides of the slide groove. When the battery pack slides to the first preset position, the elastic buckles are engaged in the corresponding grooves of the battery pack.

[0014] Furthermore, the housing is provided with a status indicator light that displays the current status.

[0015] Furthermore, the housing is provided with heat dissipation holes.

[0016] Furthermore, a handle is provided on the housing.

[0017] The beneficial effects of this utility model are as follows: This application enables the battery pack charger to connect to the battery pack and power supply or electronic devices through a universal interface and connector on the housing. The internal circuit control board can control the delivery of electrical energy from the power source to the battery pack, and also control the delivery of electrical energy from the battery pack to the electronic devices. Thus, users do not need to carry a separate power bank and a dedicated charging cable, simplifying device carrying, reducing burden, and improving ease of use and efficiency.

[0018] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure for the charger and battery pack of a power tool.

[0020] Figure 2 for Figure 1 Another structural diagram of the mating structure;

[0021] Figure 3 for Figure 1 Connection diagram of the intermediate mating structure;

[0022] Figure 4 for Figure 1 A schematic diagram of the structure of a charger for the battery pack of Chinese power tools;

[0023] Figure 5 for Figure 1 The structural intent of the battery pack. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] Please see Figure 1 , Figure 2 and Figure 4 The power tool battery pack charger 100 shown in a preferred embodiment of this application includes a housing 1, a connector 2, and a circuit control board 3.

[0029] A groove 11 is provided on the surface of the housing 1. The groove 11 ensures that the battery pack 200 slides smoothly on the housing 1 and moves to a first preset position. Along the extension direction of the groove 11, a universal interface 12 for connecting to a power source or electronic device is formed at the end of the housing 1 away from the groove 11. The universal interface 12 is not only suitable for charging the battery pack 200, but also compatible with various electronic devices and can charge electronic devices.

[0030] Connector 2 is mounted on housing 1. When battery pack 200 slides along slide groove 11 to the first preset position, battery pack 200 and connector 2 are electrically connected. Generally, connector 2 is a metal guide plate to ensure the stability and efficiency of power transmission. The cooperation between slide groove 11 and connector 2 ensures that battery pack 200 maintains the correct orientation and position during movement.

[0031] Generally, when charging is required, the battery pack 200 and the charger will make contact with each other in the vertical direction to achieve electrical connection. When the circuit control board 3 is arranged horizontally inside the housing 1, the assembly is taller and larger in volume after the battery pack 200 is inserted into the slide groove 11.

[0032] To address the aforementioned issues, the circuit control board 3 is positioned along the height of the housing 1 and parallel to the extension direction of the slide groove 11. When the battery pack 200 is inserted into the slide groove 11, the circuit control board 3 and the battery pack 200 are vertically offset, thus reducing the overall height of the assembly and resulting in a smaller final size. This not only optimizes the utilization of internal space but also makes the overall design more compact and aesthetically pleasing. Furthermore, the reduced height helps save space in the working environment, providing a better user experience and greater flexibility.

[0033] Please see Figure 3 The circuit control board 3 is electrically connected to the universal interface 12 and the connector 2. The circuit control board 3 controls the battery pack 200 to switch between charging and discharging modes. The circuit control board 3 needs to include a charging module and a discharging function module. It can adopt a circuit system commonly used in the prior art to realize bidirectional charging, which will not be described in detail here. When the universal interface 12 is connected to a power source, the circuit control board 3 controls the battery pack 200 to be in charging mode. When the universal interface 12 is connected to an electronic device, the circuit control board 3 controls the battery pack 200 to be in discharging mode.

[0034] This application enables the charger 100 for the power tool's battery pack to connect to the battery pack 200 and power sources or electronic devices via a universal interface 12 and connector 2 on the housing. The internal circuit control board 3 can control both the supply of electrical energy from the power source to the battery pack 200 and the supply of power from the battery pack 200 to the electronic devices. Thus, users do not need to carry a separate power bank and dedicated charging cable, simplifying device carrying, reducing burden, and improving ease of use and efficiency.

[0035] There is at least one general-purpose interface 12 for connecting to a power source or electronic device. In one embodiment, there is only one general-purpose interface 12, through which both charging and discharging modes can be achieved simultaneously. A control method for charging and discharging via a single interface is described in Chinese Patent Publication No. CN109510278A, and therefore will not be elaborated upon here.

[0036] In another embodiment, the general interface 12 has two parts: a charging interface 121 and a discharging interface 122. The charging interface 121 is used to transfer electrical energy from the power source to the battery pack 200, ensuring that the battery pack 200 can be charged quickly. The discharging interface 122 is used to output electrical energy from the battery pack 200 to electronic devices. This structure is quite common and will not be described in detail here.

[0037] The universal interface 12 is a Type-C interface. As the mainstream interface for electronic devices, the Type-C interface not only has the advantages of being reversible and having high charging efficiency, but also supports bidirectional charging. Therefore, the Type-C interface is suitable for both one universal interface 12 and two universal interfaces 12.

[0038] Please see Figure 5 The battery pack 200 includes at least a guide groove 201, a recess 202, a battery cell 203, a battery interface 204, and a battery pack housing 205. Along a first horizontal direction, the battery pack housing 205 has guide grooves 201 and recesses 202 formed on both sides. The guide grooves 201 extend along a second horizontal direction, wherein the first horizontal direction is perpendicular to the second horizontal direction. Along the second horizontal direction, one end of the battery pack housing 205 is also provided with a battery interface 204, allowing the battery cell 203 to be inserted into the battery pack housing 205 from the end furthest from the battery interface 204. The battery 203 is electrically connected to the battery interface 204.

[0039] Optionally, a guide protrusion 111 is provided on the inner wall of the slide groove 11. The guide protrusion 111 cooperates with the guide groove 201 on the battery pack 200 to ensure that the battery pack can slide smoothly to the first preset position. The cooperation between the guide protrusion 111 and the guide groove 201 provides a stable sliding path, preventing the battery pack 200 from shifting or getting stuck during the sliding process, improving the accuracy and convenience of battery pack 200 installation, and reducing electrical connection problems caused by incorrect installation.

[0040] Optionally, elastic buckles 112 are provided on both sides of the slide 11. When the battery pack 200 slides to the first preset position, the elastic buckles 112 engage with the corresponding grooves 202 of the battery pack 200. The elastic buckles 112 not only securely fix the battery pack 200 to prevent it from accidentally coming loose during charging, but also provide clear physical feedback, allowing the user to clearly perceive that the battery pack 200 has reached the first preset position during operation.

[0041] Optionally, the housing 1 is provided with a status indicator light 13 to display the current status, allowing the user to easily understand the working status of the power tool's battery pack charger 100 in real time. The status indicator light 13 can use various colors and flashing patterns to represent different working states, such as charging, fully charged, standby, and fault. In this way, the user can intuitively judge the status of the battery pack 200 and perform corresponding operations in a timely manner, improving the convenience and safety of use.

[0042] Optionally, the housing 1 is provided with heat dissipation holes (not shown) to ensure that the power tool battery pack charger 100 can effectively dissipate heat during operation. The design of the heat dissipation holes helps to quickly dissipate the heat generated inside the power tool battery pack charger 100, preventing overheating, thereby improving work efficiency and service life.

[0043] Optionally, a handle (not shown) is provided on the housing 1 to allow the user to carry and move the power tool battery pack charger 100. The handle is ergonomically designed for comfortable grip and reduces fatigue during extended periods of carrying. Whether in the workplace or working outdoors, the handle provides great convenience, allowing the user to easily move the power tool battery pack charger 100 from one location to another.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A charger for a battery pack of a power tool, characterized by, include: The housing has a groove on its surface, and along the extending direction of the groove, a universal interface for connecting to a power supply or electronic device is formed at the end of the housing away from the groove. A connector is provided on the housing. When the battery pack slides along the groove to a first preset position, the battery pack and the connector are electrically connected. A circuit control board is disposed along the height direction of the housing and parallel to the extension direction of the slide groove. The circuit control board is electrically connected to the universal interface and the connector respectively. The circuit control board controls the battery pack to switch between charging and discharging modes.

2. The charger for a battery pack of a power tool according to claim 1, wherein The general interface is a Type-C interface.

3. The charger for the battery pack of the power tool according to claim 1, wherein There is at least one general interface.

4. The charger for the battery pack of the power tool according to claim 1, wherein The inner wall of the slide is provided with a guide protrusion, which cooperates with the guide groove on the battery pack to ensure that the battery pack can slide smoothly to the first preset position.

5. The charger for the battery pack of the power tool according to claim 4, wherein The slide groove is provided with elastic buckles on both sides. When the battery pack slides to the first preset position, the elastic buckles are engaged in the corresponding grooves of the battery pack.

6. The charger for the battery pack of the power tool according to claim 1, wherein The housing is equipped with a status indicator light that displays the current status.

7. The charger for the battery pack of the power tool as described in claim 1, characterized in that, The housing is provided with heat dissipation holes.

8. The charger for the battery pack of the power tool according to claim 1, wherein The housing is provided with a handle.

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