Voltage switching assembly and battery pack

Abstract

This application relates to the field of power tool technology, specifically to a voltage switching component and battery pack, including a switching element and a first connector and a second connector disposed on the switching element; a connector socket is provided on the circuit board; the connector socket is located between the first connector and the second connector; the switching element is driven to move linearly, the second connector moves away from the connector socket, and the first connector moves closer to the connector socket and plugs into the connector socket, causing the battery pack to output a first voltage; or, the first connector moves away from the connector socket, and the second connector moves closer to the connector socket and plugs into the connector socket, causing the battery pack to output a second voltage; the first voltage is greater than the second voltage. This application enables the battery pack to output two different voltages through the switching of the first connector and the second connector, which not only has a simple structure and is easy to operate, but also effectively improves system safety.

Description

Technical Field

[0001] This application relates to the field of power tool technology, and more specifically, to a voltage switching component and a battery pack. Background Technology

[0002] With the diversification of power source demands for portable electronic devices such as power tools, garden tools, and home appliances, lithium-ion battery packs have become a mainstream energy source widely used in various products. Currently, common detachable battery packs on the market typically employ a single voltage platform design, meaning their output voltage is fixed and cannot be switched or adjusted according to the needs of the load device. In actual products, different brands or models of power tools often use different voltage platforms (such as 20V, 40V, etc.), making it difficult for traditional battery packs to achieve universal interchangeability between multiple voltage systems. Users need to configure corresponding battery packs for devices with different voltage platforms, increasing usage costs and management complexity. On the other hand, in some application scenarios, the same device may need to operate in different power modes, thus requiring dynamic adjustment of the supply voltage, which traditional fixed-voltage output battery packs cannot meet.

[0003] To address these issues, some manufacturers have attempted to adapt devices with different voltages by using external power management systems or host-side voltage conversion circuits. However, this not only increases the complexity and power consumption of the entire system but may also affect overall energy efficiency and safety. Utility Model Content

[0004] The purpose of this application is to provide a voltage switching component and a battery pack, which can switch between two different voltages by connecting a first connector and a second connector. It is not only simple in structure and easy to operate, but also effectively improves system safety.

[0005] The embodiments of this application are implemented as follows:

[0006] On one hand, this application provides a voltage switching component, configured on a circuit board of a battery pack, including a switching component and a first connector and a second connector disposed on the switching component; the circuit board is provided with a connector; the connector is located between the first connector and the second connector; the switching component is driven to move linearly, the second connector moves away from the connector, and the first connector moves closer to the connector and plugs into the connector, so that the battery pack outputs a first voltage; or, the first connector moves away from the connector, and the second connector moves closer to the connector and plugs into the connector, so that the battery pack outputs a second voltage; the first voltage is greater than the second voltage.

[0007] As an optional implementation, it also includes a trigger element arranged on one side of the switching element; one end of the trigger element is connected to the switching element and the other end extends away from the switching element in a linear movement direction; the trigger element is pushed by the switching element to drive the first plug-in element to plug into the plug socket, so that at least two sets of cells included in the battery pack output a first voltage in series.

[0008] As an optional implementation, it also includes an elastic element; when the first plug is inserted into the plug socket, the elastic element is compressed and generates an elastic thrust acting on the switching element; when the elastic thrust is released, the elastic element drives the second plug to be inserted into the plug socket through the switching element, so that at least two sets of cells included in the battery pack output a second voltage in parallel.

[0009] As an optional implementation, the connector includes a fixing part and two clamping parts connected to the fixing part; the fixing part is vertically inserted into the circuit board; the two clamping parts are spaced apart to form two openings facing the first connector and the second connector respectively, and the first connector or the second connector is inserted through the openings.

[0010] As an optional implementation, the switching component includes a guide portion and two support portions; the first plug-in component and the second plug-in component are respectively disposed on the two support portions; the guide portion extends along the linear movement direction and its two ends are respectively connected to the two support portions.

[0011] As an optional implementation, it also includes a mounting box disposed on the surface of the circuit board; the switching component is located inside the mounting box; the mounting box is provided with a guide groove extending in a linear movement direction, and the guide portion slides in cooperation with the guide groove.

[0012] As an optional implementation, each of the two bearing portions is provided with a plurality of limiting slots arranged perpendicular to the linear movement direction; a plurality of first inserts are respectively inserted into the limiting slot of one of the bearing portions, and a plurality of second inserts are respectively inserted into the limiting slot of the other bearing portion.

[0013] As an optional implementation, the mounting box is provided with multiple plug-in slots; each plug-in slot is provided with a plug-in socket; the multiple plug-in slots are arranged sequentially along the direction perpendicular to the linear movement direction; the plug-in socket is provided with a snap-fit ​​part that connects to the plug-in slot.

[0014] As an optional implementation, the battery pack includes a locking button; the trigger, the switching element, and the locking button are arranged sequentially along a linear movement direction; the trigger is pushed by a force to move the switching element along a direction closer to the locking button.

[0015] On the other hand, this application provides a battery pack including a housing, a circuit board and the voltage switching component described above; the circuit board is located inside the housing, the voltage switching component is disposed on one side of the circuit board, and at least two sets of battery cells are disposed on the other side of the circuit board.

[0016] The beneficial effects of the embodiments of this application include:

[0017] The technical effects that the embodiments of this application can produce are as follows:

[0018] The voltage switching component provided in this application embodiment allows for selective connection of either the first or second connector to the connector socket via linear movement of the switching element, thereby achieving two different voltage outputs. This application embodiment allows the battery pack to output different voltages as needed, improving the battery pack's versatility and interchangeability across various devices. This application embodiment also reduces the need for an external power management system or host-side voltage conversion circuitry. This not only reduces the complexity and additional power consumption of the entire system but may also improve overall energy efficiency and safety.

[0019] The battery pack design provided in this application, which separates the voltage switching components and battery cells on opposite sides of the circuit board, facilitates a rational layout of internal components and maximizes the use of limited space. This not only helps to reduce the overall size of the battery pack but also facilitates heat dissipation management and extends its service life. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is one of the structural schematic diagrams of the voltage switching component in the embodiments of this application;

[0022] Figure 2 This is a second schematic diagram of the structure of the voltage switching component according to an embodiment of this application;

[0023] Figure 3 This is the third schematic diagram of the voltage switching component in the embodiments of this application;

[0024] Figure 4 This is the fourth schematic diagram of the voltage switching component in the embodiments of this application;

[0025] Figure 5 This is the fifth schematic diagram of the voltage switching component in the embodiments of this application;

[0026] Figure 6 This is the sixth schematic diagram of the voltage switching component in the embodiments of this application;

[0027] Figure 7 This is a schematic diagram of the battery pack structure according to an embodiment of this application.

[0028] Icons: 10-Circuit board; 100-Plug-in connector; 101-Fixing part; 102-Clamping part; 103-Snap-in part; 20-Switching part; 200-First plug-in part; 201-Second plug-in part; 202-Bearing part; 203-Guide part; 204-Limiting slot; 30-Trigger element; 40-Mounting box; 409-Guide groove; 410-Plug-in connector slot; 70-Elastic element; 90-Housing; 903-Locking button. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0031] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 application based on the specific circumstances.

[0033] In actual products, different brands or models of power tools often use different voltage platforms (such as 20V, 40V, etc.), while traditional battery packs can only output a fixed voltage. This makes it difficult for traditional battery packs to be universally interchangeable between multiple voltage systems. Users need to configure corresponding battery packs for devices with different voltage platforms, increasing usage costs and management complexity. On the other hand, in some application scenarios, the same device may need to operate in different power modes, thus requiring dynamic adjustment of the supply voltage. Traditional fixed-voltage output battery packs cannot meet the requirements of such applications. Therefore, some manufacturers have tried to adapt to different voltage devices through external power management systems or host-side voltage conversion circuits. However, this not only increases the complexity and power consumption of the entire system, but may also affect overall energy efficiency and safety.

[0034] To address the aforementioned technical problems, embodiments of this application provide a voltage switching component and a battery pack.

[0035] Reference Figure 1 , Figure 2 as well as Figure 3 As shown, the voltage switching component provided in this application embodiment is configured on the circuit board 10 of the battery pack, including a switching member 20 and a first connector 200 and a second connector 201 disposed on the switching member 20; the circuit board 10 is provided with a connector 100; the connector 100 is located between the first connector 200 and the second connector 201; the switching member 20 is driven to move linearly, the second connector 201 moves away from the connector 100, the first connector 200 moves closer to the connector 100 and plugs into the connector 100, so that the battery pack outputs a first voltage; or, the first connector 200 moves away from the connector 100, the second connector 201 moves closer to the connector 100 and plugs into the connector 100, so that the battery pack outputs a second voltage; the first voltage is greater than the second voltage.

[0036] The linear movement direction of the switching component 20 is the interval direction between the first connector 200 and the second connector 201. The first connector 200 and the second connector 201 have a sheet-like structure, which is simple and effective.

[0037] It should be noted that the switching element 20 can move linearly under the action of an external driving force. The first connector 200 and the second connector 201 are located on the switching element 20, and there is a certain gap between them. Based on the movement of the switching element 20, that is, the movement along the gap direction of the first connector 200 and the second connector 201, it can be determined which connector will connect to the connector 100 on the circuit board 10.

[0038] It should be noted that the connector 100 is disposed on the circuit board 10, located between the first connector 200 and the second connector 201, and is used to receive one of the connectors to determine the output voltage of the battery pack.

[0039] For example, the second connector 201 is located away from the connector 100, and the first connector 200 is located near the connector 100 and plugged into the connector 100, causing the battery pack to output a first voltage of 40V. Alternatively, the first connector 200 is located away from the connector 100, and the second connector 201 is located near the connector 100 and plugged into the connector 100, causing the battery pack to output a second voltage of 20V.

[0040] The technical effects that the embodiments of this application can produce are as follows:

[0041] Firstly, the voltage output of this embodiment offers exceptional flexibility. Through the linear movement of the physical structure switching component 20, this embodiment allows for selective connection of either the first connector 200 or the second connector 201 to the connector 100, thereby achieving two different voltage outputs. This design allows the battery pack to output different voltages as needed, improving its versatility and interchangeability across various devices.

[0042] Secondly, the embodiments of this application simplify the power management system. Since the battery pack itself can switch voltages, the need for an external power management system or host-side voltage conversion circuitry is reduced. This not only reduces the complexity and additional power consumption of the entire system but may also improve overall energy efficiency and safety.

[0043] Third, the embodiments of this application can reduce the cost and management difficulty of battery packs for users. For users, it is no longer necessary to configure multiple dedicated battery packs for devices with different voltage platforms. Instead, a single battery pack with voltage switching function can meet the needs of multiple devices, thereby effectively reducing the cost of use and management complexity.

[0044] In summary, the voltage switching component provided in this application embodiment achieves flexible switching of the battery pack output voltage through a simple yet effective mechanical structure design, and has broad application prospects.

[0045] Reference Figure 3 as well as Figure 4 As shown, as an optional implementation, it also includes a trigger 30 arranged on one side of the switching member 20; one end of the trigger 30 is connected to the switching member 20 and the other end extends away from the switching member 20 along the linear movement direction; the trigger 30 is pushed by the switching member 20 to drive the first plug 200 to plug into the plug socket 100, so that at least two sets of cells included in the battery pack are connected in series to output the first voltage.

[0046] It should be noted that, in this embodiment of the application, the trigger 30 is arranged on one side of the switching member 20 and connected to the switching member 20. One end of the trigger 30 is connected to the switching member 20, and the other end extends away from the switching member 20 along the linear movement direction. The purpose of the trigger 30 is to facilitate the user to apply a pushing force to drive the switching member 20 to move linearly, thereby realizing the movement of the first connector 200 and the second connector 201.

[0047] The embodiments of this application allow the cells inside the battery pack to operate in series or parallel as needed, thereby outputting different levels of voltage.

[0048] Regarding the explanation of the first voltage output in series: When the trigger 30 is subjected to a thrust, it will drive the first plug 200 to plug into the plug socket 100 through the switching component 20, thereby enabling at least two sets of cells in the battery pack to be connected in series, and finally outputting a higher first voltage.

[0049] The technical effects that the embodiments of this application can produce are as follows:

[0050] This embodiment introduces a trigger 30 to control the operation of the switching element 20. The user can control the voltage switching process by applying a thrust to the trigger 30. This not only simplifies the operation process but also improves the accuracy and reliability of the operation, because the user can directly feel the feedback of the mechanical action, ensuring successful voltage switching.

[0051] This application embodiment optimizes the user experience. Due to the presence of the trigger 30, the user can adjust the battery pack's output voltage without opening the device casing or performing complex procedures. This design makes the battery pack easier to use, greatly improving operational convenience and providing a better user experience.

[0052] Reference Figure 1 as well as Figure 2 As shown, as an optional implementation, it also includes an elastic element 70; when the first plug 200 is plugged into the plug socket 100, the elastic element 70 is compressed and generates an elastic thrust acting on the switching element 20; when the elastic thrust is released, the elastic element 70 drives the second plug 201 to be plugged into the plug socket 100 through the switching element 20, so that at least two sets of cells included in the battery pack output a second voltage in parallel.

[0053] It should be noted that when the first connector 200 is plugged into the connector 100, the elastic element 70 in this embodiment is compressed, thereby generating an elastic thrust acting on the switching element 20. When the user removes the thrust applied to the trigger 30, the elastic thrust of the elastic element 70 is released, which can drive the switching element 20 to move in the opposite direction.

[0054] In the specific operation: when the elastic thrust is released, the elastic element 70 drives the switching element 20 to move, so that the second plug 201 approaches and finally plugs into the plug socket 100, thereby realizing the parallel connection of at least two sets of cells in the battery pack and outputting a lower second voltage.

[0055] In other words, the voltage switching component in this application embodiment has a reset function through the setting of the elastic element 70. When the user does not apply a pushing force to the trigger element 30, the battery pack can always be in the working state of the second voltage.

[0056] The technical effects that the embodiments of this application can produce are as follows:

[0057] This embodiment of the application enables the voltage switching component to have an automatic reset capability through the setting of the elastic element 70. Once the external thrust applied to the trigger element 30 disappears or decreases to a certain extent, the energy stored in the elastic element 70 will be released, pushing the switching element 20 back to its original position, that is, automatically switching from the first voltage to the second voltage. Therefore, this application does not require manual reset by the user, which not only simplifies the user operation, but also improves the system's response speed and reliability.

[0058] This application's embodiments adjust the output voltage by controlling the series or parallel connection of the battery cells, which can optimize energy utilization efficiency while meeting different load requirements. For example, a series mode is used when a high voltage output is required, and a parallel mode is switched when a low voltage output is required.

[0059] The embodiment of this application adds extra safety to the entire voltage switching assembly by incorporating the elastic element 70. The elastic element 70 can, to a certain extent, offset the effects of external vibrations or impacts, protecting internal electrical connections from damage, thereby improving the overall stability and durability of the system.

[0060] Reference Figure 5 As shown, in one optional embodiment, the connector 100 includes a fixing part 101 and two clamping parts 102 connected to the fixing part 101; the fixing part 101 is vertically inserted into the circuit board 10; the two clamping parts 102 are spaced apart to form two openings respectively facing the first connector 200 and the second connector 201, through which the first connector 200 or the second connector 201 is inserted. Only one row of connectors 100 needs to cooperate with the first connector 200 and the second connector 201 to achieve switching between two voltages. The structure is simple and reasonable, the voltage switching is reliable, and the cost is low.

[0061] It should be noted that the fixing part 101 is vertically inserted into the circuit board 10, providing a stable support for the connector 100.

[0062] It should be noted that, referring to Figure 5As shown, the clamping part 102 in this embodiment includes a rectangular plate structure connected to the fixing part 101. The two clamping parts 102 are spaced apart to form two openings facing the first connector 200 and the second connector 201, respectively. The length direction of each clamping part 102 is consistent with the linear movement direction of the switching member 20, ensuring that the first connector 200 and the second connector 201 can be accurately inserted and electrically connected.

[0063] It should be noted that the spacing between the two rectangular pieces is slightly smaller than the thickness of the first connector 200 and the second connector 201; the rectangular pieces have chamfers at the open ends so that the first connector 200 and the second connector 201 can be tightly inserted between the two rectangular pieces to ensure good electrical contact.

[0064] The technical effects that the embodiments of this application can produce are as follows:

[0065] This embodiment of the application designs the clamping part 102 as a rectangular piece aligned with the linear movement direction of the switching member 20, and leaves an opening between the two clamping parts 102. This ensures that the first connector 200 or the second connector 201 can be accurately aligned and smoothly inserted into the designated position during movement. This design in this embodiment of the application helps reduce poor contact problems caused by inaccurate insertion and improves the reliability of the connection.

[0066] This embodiment enhances durability and safety. Its clamping portion 102 employs a rectangular plate design, which, compared to other shapes, is more effective at distributing stress and extending service life. Since the fit between the connector and the clamping portion 102 is based on a tight insertion with matching physical dimensions, it can prevent mis-insertion or loosening to a certain extent, thereby improving safety during use. Furthermore, a good electrical connection also helps avoid spark generation, further enhancing the safety performance of the device.

[0067] Reference Figure 3 as well as Figure 4 As shown, in one optional implementation, the switching member 20 includes a guide portion 203 and two support portions 202; a first connector 200 and a second connector 201 are respectively disposed on the two support portions 202; the guide portion 203 extends along the linear movement direction and its two ends are respectively connected to the two support portions 202. In this embodiment, the extension direction of the support portion 202 is perpendicular to the linear movement direction.

[0068] It should be noted that, in this embodiment, the guide portion 203 extends along the linear movement direction, and its two ends are respectively connected to two support portions 202. The guide portion 203 ensures that the switching member 20 can move precisely along a predetermined linear path.

[0069] This embodiment of the application has two support portions 202, each of which is provided with a first connector 200 and a second connector 201. The extending direction of these support portions 202 is perpendicular to the linear movement direction of the switching member 20. The layout of this embodiment helps to optimize space utilization while ensuring that the connectors remain stable during movement.

[0070] It should be noted that there can be one or two guide parts 203. For example, two guide parts 203 and two support parts 202 can form a rectangular frame structure. Alternatively, one guide part 203 and two support parts 202 can form an I-shaped structure.

[0071] The technical effects that the embodiments of this application can produce are as follows:

[0072] The design of the guide section 203 in this embodiment ensures that the switching member 20 can move smoothly along a straight line, reducing the risk of deviating from the track. This is crucial for ensuring that the first connector 200 or the second connector 201 is accurately inserted into the corresponding connector opening 100. The precise guiding mechanism improves system reliability and avoids poor contact problems caused by inaccurate insertion.

[0073] Furthermore, the embodiments of this application improve structural stability. The design of the bearing portion 202 perpendicular to the linear movement direction makes the entire switching component 20 structure more robust. Even under external vibration or impact, it can effectively maintain the position of the connector, thereby ensuring the continuity and stability of the electrical connection.

[0074] Reference Figure 1 , Figure 6 As shown, as an optional implementation, it also includes a mounting box 40, which is disposed on the surface of the circuit board 10; the switching member 20 is located inside the mounting box 40; a guide groove 409 extending in the linear movement direction is provided inside the mounting box 40, and the guide part 203 slides in cooperation with the guide groove 409.

[0075] It should be noted that, in this embodiment of the application, the mounting box 40 is fixedly disposed on the surface of the circuit board 10, serving as a receiving space for the switching component 20 and playing a role in protection, positioning, and structural integration. The entire switching component 20, including the guide portion 203 and the two supporting portions 202, is housed inside the mounting box 40, avoiding interference from the external environment on the switching action and improving the compactness and safety of the overall structure.

[0076] In this embodiment of the application, a guide groove 409 extending along the linear movement direction is provided inside the mounting box 40, and the guide groove 409 forms a sliding fit relationship with the guide portion 203 of the switching member 20.

[0077] The embodiments of this application can produce the following effects:

[0078] In this embodiment, the sliding fit structure between the guide groove 409 and the guide portion 203 strictly restricts the movement of the switching member 20, allowing it to move only along a set direction. This greatly improves the docking accuracy between the connector and the connector socket 100. It avoids connection failures or poor contact caused by mechanical displacement deviations, thus improving the electrical connection stability of the system.

[0079] The embodiments of this application can improve the compactness and integration of the overall structure. The mounting box 40 integrates the switching component 20 and its related components into a closed space, which not only simplifies the external wiring and layout, but also enhances the compactness of the overall battery pack structure.

[0080] Reference Figure 4 As shown, in one optional embodiment, each of the two support parts 202 is provided with a plurality of limiting slots 204 arranged along the vertical linear movement direction; a plurality of first connectors 200 are respectively inserted into the limiting slots 204 of one support part 202, and a plurality of second connectors 201 are respectively inserted into the limiting slots 204 of the other support part 202.

[0081] This application, by providing a limiting slot 204, ensures that the first connector 200 and the second connector 201 can have fixed installation positions on their respective support portions 202. This embodiment effectively prevents the connectors from shaking or misaligning during switching, ensuring accurate docking with the connector socket 100 each time a switch is made, thus improving the reliability and safety of the electrical connection.

[0082] The limiting slot 204 in this embodiment provides precise positioning for the connector, helping to ensure that the connector is accurately aligned with the connector base 100 when it moves to the designated position. This not only improves the success rate of voltage switching but also reduces the risk of functional failure due to poor contact, thereby enhancing the overall system performance.

[0083] Reference Figure 6 As shown, in one optional implementation, the mounting box 40 is provided with multiple connector slots 410; each connector slot 410 contains a connector 100; the multiple connector slots 410 are arranged sequentially along the vertical linear movement direction; see reference Figure 5 As shown, the connector 100 is provided with a snap-fit ​​part 103 that connects to the connector slot 410.

[0084] It should be noted that the mounting box 40 of this application embodiment is provided with a plurality of plug-in slots 410, each plug-in slot 410 being used to accommodate a plug-in 100. Each plug-in 100 is provided with a snap-fit ​​part 103 for connecting with the plug-in slot 410 to ensure that the plug-in 100 is securely fixed inside the mounting box 40.

[0085] The connector 100 of this application embodiment is firmly fixed in the connector slot 410 of the mounting box 40 by the snap-fit ​​part 103 thereon. This design of this application embodiment can ensure that the connector 100 will not be displaced or loosened during use, thereby ensuring a stable electrical connection with the first connector 200 or the second connector 201.

[0086] The length of the snap-fit ​​portion 103 along the linear movement direction is greater than that of the fixing portion 101 and the clamping portion 102, making the fixing of the connector 100 more reliable. The fixing portion 101, the clamping portion 102 and the snap-fit ​​portion 103 are integrally formed, specifically by stamping and bending a metal conductor, which is convenient to manufacture and has low cost.

[0087] Reference Figure 7 As shown, the battery pack includes a locking button 903; a trigger 30, a switching element 20, and the locking button 903 are arranged sequentially along a linear movement direction; the trigger 30 is pushed by a force to move the switching element 20 in a direction close to the locking button 903.

[0088] The locking button 903 of this embodiment can lock and fix the battery pack to a power tool or charger. The trigger 30, the switching member 20, and the locking button 903 are arranged sequentially along the linear movement direction, with a compact structure and reasonable layout. The trigger 30 is pushed by a force to move the switching member 20 toward the locking button 903. When the trigger 30 is pushed by a force to switch the switching member 20 to the first position, the locking button 903 can then fix the battery pack to the power tool. This effectively prevents the battery pack from changing position due to accidental collisions or other external forces, ensuring the continuous stability and safety of the electrical connection.

[0089] Reference Figure 7 As shown, this application embodiment provides a battery pack, including a housing 90, a circuit board 10, and the voltage switching component described above; the circuit board 10 is located inside the housing 90, the voltage switching component is disposed on one side of the circuit board 10, and at least two sets of battery cells are disposed on the other side of the circuit board 10.

[0090] The design of the battery pack in this application embodiment, which separates the voltage switching component and the battery cells on both sides of the circuit board 10, helps to rationally arrange the internal components and maximize the use of limited space. This not only helps to reduce the overall size of the battery pack, but also facilitates heat dissipation management and extends service life.

[0091] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A voltage switching component, disposed on a circuit board (10) of a battery pack, characterized in that, The battery pack includes a switching element (20) and a first connector (200) and a second connector (201) disposed on the switching element (20); a connector (100) is provided on the circuit board (10); the connector (100) is located between the first connector (200) and the second connector (201); the switching element (20) is driven to move in a straight line, the second connector (201) moves away from the connector (100), the first connector (200) moves closer to the connector (100) and is plugged into the connector (100), so that the battery pack outputs a first voltage; or, the first connector (200) moves away from the connector (100), the second connector (201) moves closer to the connector (100) and is plugged into the connector (100), so that the battery pack outputs a second voltage; the first voltage is greater than the second voltage.

2. The voltage switching component according to claim 1, characterized in that, It also includes a trigger (30) arranged on one side of the switching member (20); one end of the trigger (30) is connected to the switching member (20) and the other end extends away from the switching member (20) along a straight moving direction; the trigger (30) is pushed by the switching member (20) to drive the first plug (200) to plug into the plug socket (100), so that at least two sets of cells included in the battery pack output a first voltage in series.

3. The voltage switching component according to claim 1, characterized in that, It also includes an elastic element (70); when the first plug (200) is plugged into the plug socket (100), the elastic element (70) is compressed and generates an elastic thrust acting on the switching element (20); when the elastic thrust is released, the elastic element (70) drives the second plug (201) to be plugged into the plug socket (100) through the switching element (20), so that at least two sets of cells included in the battery pack output a second voltage in parallel.

4. The voltage switching component according to claim 1, characterized in that, The connector (100) includes a fixing part (101) and two clamping parts (102) connected to the fixing part (101); the fixing part (101) is vertically inserted into the circuit board (10); the two clamping parts (102) are spaced apart to form two openings facing the first connector (200) and the second connector (201) respectively, and the first connector (200) or the second connector (201) is inserted through the openings.

5. The voltage switching component according to any one of claims 1-4, characterized in that, The switching component (20) includes a guide portion (203) and two support portions (202); the first plug-in component (200) and the second plug-in component (201) are respectively disposed on the two support portions (202); the guide portion (203) extends along the linear movement direction and its two ends are respectively connected to the two support portions (202).

6. The voltage switching component according to claim 5, characterized in that, It also includes a mounting box (40), which is disposed on the surface of the circuit board (10); the switching component (20) is located inside the mounting box (40); the mounting box (40) is provided with a guide groove (409) extending in the linear movement direction, and the guide part (203) slides in cooperation with the guide groove (409).

7. The voltage switching component according to claim 5, characterized in that, Each of the two support parts (202) is provided with a plurality of limiting slots (204) arranged perpendicular to the linear movement direction; a plurality of first plugs (200) are respectively inserted into the limiting slots (204) of one support part (202), and a plurality of second plugs (201) are respectively inserted into the limiting slots (204) of the other support part (202).

8. The voltage switching component according to claim 6, characterized in that, The mounting box (40) is provided with a plurality of plug-in slots (410); each plug-in slot (410) is provided with a plug-in (100); the plurality of plug-in slots (410) are arranged sequentially along the direction perpendicular to the linear movement direction; the plug-in (100) is provided with a snap-fit ​​part (103) that connects to the plug-in slot (410).

9. The voltage switching component according to claim 2, characterized in that, The battery pack includes a locking button (903); the trigger (30), the switch (20) and the locking button (903) are arranged in sequence along the linear movement direction; the trigger (30) is pushed by a force to move the switch (20) in a direction close to the locking button (903).

10. A battery pack, characterized in that, It includes a housing (90), a circuit board (10), and a voltage switching component as described in any one of claims 1-9; the circuit board (10) is located inside the housing (90), the voltage switching component is disposed on one side of the circuit board (10), and at least two sets of battery cells are disposed on the other side of the circuit board (10).

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