Universal battery supply module

Abstract

The application relates to the technical field of power supply devices of electric tools, in particular to a universal battery supply module which comprises a battery pack and a socket; the battery comprises a shell, a circuit board connected with a battery core is arranged in the shell, a plurality of insertion holes are arranged on the shell, a metal socket is arranged in each insertion hole, the metal socket is arranged on the circuit board and is in communication with a circuit on the circuit board; the metal socket comprises a negative electrode seat, a positive electrode seat and a signal seat; the socket comprises a base, a negative electrode plug corresponding to the negative electrode seat, a positive electrode plug corresponding to the positive electrode seat and a signal plug corresponding to the signal seat are arranged on the base. The application has the effects that cost advantages brought by standardized design can be reserved, and misuse problems caused by voltage mismatch can be fundamentally prevented.

Description

Technical Field

[0001] This application relates to the technical field of power supply equipment for power tools, and in particular to a universal battery supply module. Background Technology

[0002] With the popularization and development of power tools, in order to reduce R&D and production costs and enhance the stickiness of brand product ecosystems, major manufacturers generally adopt platform-based and serialized product strategies. Against this backdrop, a significant trend is to design battery packs with completely unified appearance dimensions and interface specifications for power tools of different power and uses (such as electric drills, angle grinders, electric wrenches, etc.).

[0003] This standardized design brings convenience to users. For example, users of the same brand only need to equip a few types of battery packs to power a variety of tools, while also greatly saving on the mold development costs for battery pack casings, internal structures, and tool battery slots.

[0004] Currently, the main means of product differentiation is to configure different specifications of battery cells within battery packs that are the same in external dimensions. Specifically, by changing the series and parallel combinations of the battery cells, the battery pack outputs different rated voltages (e.g., 12V, 18V / 20V Max, 36V / 40V Max, etc.) to adapt to power tools of different power levels. Low-voltage tools (such as small electric drills) use low-voltage battery packs, while high-voltage tools (such as large angle grinders or chainsaws) use high-voltage battery packs.

[0005] While the aforementioned "same size, different voltage" design strategy has advantages in terms of cost and ecosystem development, it introduces a long-neglected but serious technical problem: the risk of misuse due to voltage mismatch between the battery pack and the power tool.

[0006] Because battery packs of different voltage levels have identical external physical structures and interfaces, users are easily confused during operation. This misuse mainly manifests in the following two situations: Using a low-voltage battery pack with a high-voltage tool: When a user installs a low-voltage battery pack (such as 12V) on a power tool that requires high voltage (such as 36V), the insufficient power supply will cause the tool to fail to start or its output power to drop significantly, preventing it from working properly. More seriously, the motor inside the power tool will be forced to operate under low voltage and high current conditions, potentially causing overheating and burnout due to overload, resulting in permanent damage to the tool.

[0007] Misuse of high-voltage battery packs with low-voltage tools: When users install high-voltage battery packs (such as 36V) on power tools that can only withstand low voltage (such as 12V), the electronic components inside the tool (such as motors, control circuits, switches, etc.) will be subjected to voltages far exceeding their design range. This can easily lead to serious safety accidents such as component breakdown, short circuits, or even smoke and fire, posing a direct threat to the user's personal safety and property.

[0008] In summary, while the standardized battery pack solutions used in existing technologies to save on mold-making costs offer economic benefits, their inherent design flaws lead to serious risks of tool misuse. This risk not only impacts user experience but can also directly damage power tools and even cause safety accidents. Therefore, there is an urgent need in this field for an innovative power supply module solution that retains the cost advantages of standardized design while fundamentally preventing misuse issues caused by voltage mismatch. Utility Model Content

[0009] To address the aforementioned technical issues, this application provides a universal battery supply module that retains the cost advantages of standardized design while fundamentally preventing misuse issues caused by voltage mismatch.

[0010] To achieve the above objectives, the technical solution of this utility model is as follows: A universal battery supply module, including a battery pack and a socket; The battery pack includes a housing, inside which are battery cells and a circuit board connected to the battery cells. The housing has several sockets, each of which has a metal socket. The metal socket is located on the circuit board and is connected to the circuit on the circuit board. The metal socket includes a negative terminal, a positive terminal, and a signal terminal; The socket includes a base, on which are provided a negative plug corresponding to the negative socket, a positive plug corresponding to the positive socket, and a signal plug corresponding to the signal socket.

[0011] To achieve the above technical solution, the socket is connected to the power supply line of the power tool body, and then the battery is inserted into the socket to complete the power supply effect of the battery pack. This means that the position of the positive terminal in the socket can be adjusted to distinguish between 20V and 40V batteries, but the battery pack casing and the slots on the casing are identical, ensuring standardized casing design while differentiating power supply settings. To ensure that battery packs of different voltages can be connected normally, the positions of the positive plug and signal plug are also adjusted accordingly, thus forming 20V and 40V sockets. When the corresponding socket is installed on the corresponding power tool, although the battery pack can be inserted into the socket, the positive terminal inside the battery pack cannot connect with the positive plug on the socket, thus preventing normal power supply and avoiding damage to the power tool due to voltage incompatibility.

[0012] As a preferred embodiment of this application, the signal socket is disposed between the negative terminal and the positive terminal.

[0013] In a preferred embodiment of this application, the positive electrode holder is disposed between the negative electrode holder and the signal holder.

[0014] The above technical solution can be achieved by adjusting the position of the positive terminal in the socket to distinguish between 20V and 40V batteries. However, the outer casing of the battery pack itself and the socket slots on the casing are the same, thus ensuring standardized casing design while differentiating power supply design.

[0015] As a preferred embodiment of this application, the battery pack further includes a power indicator light disposed on the housing.

[0016] The above technical solution is implemented to display the battery pack power level in real time, so that users can replace it even when needed.

[0017] In summary, this application includes at least one of the following beneficial technical effects: 1. Connect the socket to the power tool's power supply line, then insert the battery into the socket to achieve the effect of battery pack connection and power supply; that is, by adjusting the position of the positive terminal in the socket, 20V and 40V batteries can be distinguished, but the battery pack itself and the socket slots on the outer shell are the same, thus ensuring standardized outer shell design, while power supply is differentiated; in order to match the normal connection of battery packs with different voltages, the positions of the positive plug and signal plug will also be adjusted accordingly, thus forming 20V sockets and 40V sockets. When the corresponding socket is installed on the corresponding power tool, although the battery pack can be inserted into the socket, the positive terminal inside the battery pack cannot connect with the positive plug on the socket, thus preventing normal power supply and preventing damage to the power tool due to voltage incompatibility. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0020] Figure 2 This is a schematic diagram of the internal structure of the 40V battery pack in an embodiment of this application.

[0021] Figure 3 This is a schematic diagram of the structure of the 40V socket in the embodiment of this application.

[0022] Figure 4 This is a schematic diagram of the internal structure of the 20V battery pack in an embodiment of this application.

[0023] Figure 5 This is a schematic diagram of the structure of the 20V socket in the embodiment of this application.

[0024] Reference numerals: 1. Battery pack; 11. Outer casing; 111. Socket; 12. Battery cell; 13. Circuit board; 14. Negative terminal; 15. Positive terminal; 16. Signal connector; 17. Power indicator light; 2. Socket; 21. Base; 22. Negative plug; 23. Positive plug; 24. Signal plug. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0026] This application discloses a universal battery supply module. (Refer to...) Figure 1 The universal battery supply module includes a battery pack 1 and a socket 2. The socket 2 is connected to the power supply line of the power tool body, and then the battery is inserted into the socket 2 to achieve the effect of connecting and supplying power to the battery pack 1.

[0027] Combination Figure 2 and Figure 4The battery pack 1 includes a casing 11, inside which are disposed battery cells 12 and a circuit board 13 connected to the battery cells 12. The casing 11 has several sockets 111, each containing a metal socket 2. The metal socket 2 is mounted on the circuit board 13 and connected to the circuitry on the circuit board 13. The metal sockets 2 include a negative terminal 14, a positive terminal 15, and a signal socket 16. The signal socket 16 is positioned between the negative terminal 14 and the positive terminal 15, or the positive terminal 15 is positioned between the negative terminal 14 and the signal socket 16. That is, by adjusting the position of the positive terminal 15 in the socket 111, 20V and 40V batteries can be distinguished. However, the casing 11 itself and the slots of the sockets 111 on the casing 11 are identical, thus ensuring a standardized casing 11 while allowing for differentiated power supply configurations.

[0028] Reference Figure 1 , Figure 3 and Figure 5 The socket 2 includes a base 21, on which are provided a negative plug 22 corresponding to the negative socket 14, a positive plug 23 corresponding to the positive socket 15, and a signal plug 24 corresponding to the signal socket 16. Even if the battery pack 1 with different voltages can be connected normally, the positions of the positive plug 23 and the signal plug 24 will be adjusted accordingly, thus forming a 20V socket 2 and a 40V socket 2. When the corresponding socket 2 is installed on the corresponding power tool, although the battery pack 1 can be inserted into the socket 2, the positive socket 15 inside the battery pack 1 cannot connect with the positive plug on the socket 2, thus preventing normal power supply and avoiding damage to the power tool due to voltage mismatch.

[0029] Preferably, the battery pack 1 is affixed with a corresponding distinguishing mark for personnel identification.

[0030] Back Figure 2 The battery pack 1 also includes a power indicator light 17 mounted on the housing to display the power level of the battery pack 1 in real time, so that users can replace it immediately.

[0031] The implementation principle of a universal battery supply module in this application embodiment is as follows: the socket 2 is connected to the power supply line of the power tool body, and then the battery is inserted into the socket 2 to complete the power supply effect of the battery pack 1; that is, the position of the positive terminal 15 in the socket 111 can be adjusted to distinguish between 20V and 40V batteries, but the outer shell 11 of the battery pack 1 itself and the slot of the socket 111 on the outer shell 11 are the same, thereby ensuring the standardized setting of the outer shell 11, while the power supply is differentiated; in order to match the normal connection of battery packs 1 with different voltages, the positions of the positive plug 23 and the signal plug 24 will also be adjusted accordingly, thus forming 20V socket 2 and 40V socket 2. When the corresponding socket 2 is installed on the corresponding power tool, although the battery pack 1 can be inserted into the socket 2, the positive terminal 15 inside the battery pack 1 cannot be connected to the positive plug on the socket 2, thus preventing normal power supply and preventing damage to the power tool due to voltage mismatch.

[0032] 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 universal battery supply module, characterized by: Includes a battery pack (1) and a socket (2); The battery pack (1) includes a shell (11), inside which are disposed a battery cell (12) and a circuit board (13) connected to the battery cell (12). The shell (11) is provided with a plurality of sockets (111), and each socket (111) is provided with a metal socket (2). The metal socket (2) is disposed on the circuit board (13) and connected to the circuit on the circuit board (13). The metal socket (2) includes a negative terminal (14), a positive terminal (15), and a signal terminal (16); The socket (2) includes a base (21), on which are provided a negative plug (22) corresponding to the negative socket (14), a positive plug (23) corresponding to the positive socket (15), and a signal plug (24) corresponding to the signal socket (16).

2. The universal battery supply module of claim 1, wherein: The signal base (16) is positioned between the negative base (14) and the positive base (15).

3. The universal battery supply module of claim 1, wherein: The positive electrode holder (15) is disposed between the negative electrode holder (14) and the signal holder (16).

4. The universal battery supply module of claim 1, wherein: The battery pack (1) also includes a power indicator light (17) disposed on the housing.

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