Converter and dual pressure cell pack

Abstract

The application discloses a converter and a dual-voltage battery pack. The converter comprises a first shell, a second shell, a lock knob and a first elastic member. The first shell is provided with a first through slot. The second shell is mounted with the first shell, and the first shell and the second shell enclose an assembly space. The second shell is provided with a second through slot. The lock knob is movably mounted in the assembly space. The lock knob comprises a lock knob body and a first locking portion arranged on the lock knob body. The first locking portion has a first locking state and a first unlocking state. In the first locking state, the first locking portion at least partially exposes the first through slot. In the first unlocking state, the first locking portion is accommodated in the assembly space. The first elastic member is mounted in the assembly space. The first elastic member has a movement tendency of converting the first locking portion from the first locking state to the first unlocking state. The application can quickly and conveniently mount and dismount the converter and the battery pack from the electric tool, simplifies the operation steps, reduces the operation time, and improves the work efficiency.

Description

Technical Field

[0001] This application belongs to the field of power tool technology, specifically relating to a converter and a dual-voltage battery pack. Background Technology

[0002] Currently, most power tool battery packs on the market are designed to be compatible with power tools using different interfaces or voltages, and generally rely on adapters for compatibility. However, the connection and disconnection of existing adapters from power tools is cumbersome.

[0003] 1. Connecting the converter to the power tool: The converter needs to be locked to the power tool using the locking button on it. To disconnect, the locking button must be pressed.

[0004] 2. Battery pack and converter connection: The battery pack needs to be coupled to the converter through the operating device on the battery pack. When disassembling, the operating device also needs to be pressed to unlock.

[0005] This dual manual operation mechanism (converter lock and battery pack operating mechanism) makes the process cumbersome for users when switching power tools or changing battery packs, significantly prolonging operation time, making it impossible to quickly install or remove battery packs, and hindering the improvement of work efficiency.

[0006] Therefore, in order to address the above-mentioned technical problems, it is necessary to provide a converter and a dual-voltage battery pack.

[0007] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this application and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0008] The purpose of this application is to provide a converter and a dual-voltage battery pack that can quickly adapt to different types of voltages or types of machines.

[0009] To achieve the above objectives, a specific embodiment of this application provides the following technical solution:

[0010] A converter, the converter comprising:

[0011] A first housing, wherein a first through groove is formed on the first housing;

[0012] The second housing is installed with the first housing, and the first housing and the second housing together form an assembly space. The second housing has a second through groove.

[0013] A locking button is movably installed in the assembly space. The locking button includes a locking button body and a first locking part disposed on the locking button body. The first locking part has a first locking state and a first unlocking state. In the first locking state, the first locking part is at least partially exposed in the first through groove. In the first unlocking state, the first locking part is received in the assembly space.

[0014] A first elastic element is installed in the assembly space, and the first elastic element has a tendency to cause the first locking part to change from a first locked state to a first unlocked state.

[0015] In one or more embodiments of this application, the height of the first locking portion is greater than the wall thickness of the first housing; and / or,

[0016] In the first locked state, the upper surface of the lock button body abuts against the first housing; and / or,

[0017] In the first unlocked state, the lower surface of the lock button body abuts against the second housing; and / or,

[0018] The locking button body and / or the first housing are provided with a first mounting part, and the end of the first elastic element is fixedly mounted on the first mounting part; or,

[0019] The lock button body is provided with a first assembly part, and the distance between the first assembly part and the first housing is greater than or equal to the distance between the lock button body and the first housing.

[0020] In one or more embodiments of this application, the locking button body includes a main body and a rib plate disposed under the main body. In a first locked state, the upper surface of the main body abuts against the first housing. In a first unlocked state, the rib plate at least partially exposes the second through groove, and the rib plate abuts against the second housing.

[0021] In one or more embodiments of this application, in a first unlocked state, the distance between the lock button body and the first housing is less than or equal to the height of the portion of the rib protruding from the second through groove; and / or,

[0022] The second housing is provided with a first limiting part, the rib is movably disposed in the first limiting part, and the second through groove is opened on the first limiting part.

[0023] In one or more embodiments of this application, the converter has a first positive insert, a second positive insert, a first negative insert, a second negative insert, a first signal insert, and a second signal insert. The axis of the first negative insert is collinear with the axis of the first signal insert in a first direction, and the axis of the second positive insert is collinear with the axis of the second signal insert in a second direction.

[0024] The first positive connector is electrically connected to the second positive connector, and the first negative connector is electrically connected to the second negative connector; or, the first negative connector is electrically connected to the second positive connector.

[0025] Another specific embodiment of this application provides the following technical solution:

[0026] A dual-voltage battery pack, the dual-voltage battery pack comprising:

[0027] A battery pack includes a housing, a cell assembly, an operating component, and a second elastic component. The housing is detachably mounted to a converter, and the housing has a slot and a third through slot. The cell assembly is fixedly mounted within the housing. The operating component is movably mounted within the housing, and includes a pressing portion protruding from the slot and a second locking portion disposed on the pressing portion. The second locking portion has a second locked state and a second unlocked state. In the second locked state, the second locking portion protrudes from the third through slot, and the locking button is in a first locked state. In the second unlocked state, the second locking portion is housed within the housing, and the locking button is in a first unlocked state. The second elastic component is fixedly mounted within the housing, and the second elastic component has a tendency to cause the second locking portion to transition from the second unlocked state to the second locked state.

[0028] The battery pack can be detachably installed with the converter as described above. When the second locking part is in the second locking state, the second locking part is inserted into the second through slot, and the first locking part of the converter is in the first locking state. When the second locking part is in the second unlocking state, the second locking part is separated from the second through slot, and the first locking part of the converter is in the first unlocking state.

[0029] In one or more embodiments of this application, the elastic force of the second elastic element is greater than the elastic force of the first elastic element; and / or,

[0030] The outer casing is provided with a second limiting part, the operating member is movably disposed in the second limiting part, and the slot is formed on the second limiting part; and / or

[0031] One of the converter and the housing is provided with a first slider, and the other is provided with a first groove that mates with the first slider; and / or,

[0032] The height of the second locking part is greater than the thickness of the outer shell; and / or,

[0033] In the second locked state, the operating member abuts against the housing; and / or,

[0034] The pressing part is provided with a limiting protrusion. In the second unlocked state, the limiting protrusion abuts against the outer shell; in the second locked state, the distance between the limiting protrusion and the outer shell is greater than or equal to the distance between the second locking part and the outer shell; and / or,

[0035] The locking button body includes a main body and a rib plate disposed below the main body. The second housing of the converter is recessed with a slot, and the second through slot is disposed in the slot. When the second locking part is in the second locked state, the second locking part is inserted into the slot and abuts against the rib plate. When the second locking part is in the second unlocked state, the second locking part is separated from the slot and the rib plate.

[0036] In one or more embodiments of this application, the battery pack further includes a bracket disposed in the housing, the battery cell assembly being at least partially supported by the bracket, and the second elastic member being fixedly installed between the bracket and the housing.

[0037] In one or more embodiments of this application, the outer casing and / or bracket are provided with a second mounting portion, and the end of the second elastic member is fixedly mounted on the second mounting portion; or,

[0038] The bracket is provided with a second assembly part. In the second locking state, the distance between the second assembly part and the outer shell is greater than or equal to the distance between the second locking part and the outer shell.

[0039] In one or more embodiments of this application, it further includes a first positive pin, a second positive pin, a first negative pin, a second negative pin, a first signal pin, a second signal pin, and a plurality of receiving slots for receiving the pins, wherein the first negative pin and the first signal pin are located in the same receiving slot, and the second positive pin and the second signal pin are located in the same receiving slot.

[0040] The battery cell assembly includes a first battery cell assembly composed of multiple battery cells connected in series and a second battery cell assembly composed of multiple battery cells connected in series. The first battery cell assembly has a first positive electrode and a first negative electrode, and the second battery cell assembly has a second positive electrode and a second negative electrode. The first positive electrode is connected to the first positive pin, the first negative electrode is connected to the first negative pin, the second positive electrode is connected to the second positive pin, and the second negative electrode is connected to the second negative pin.

[0041] Compared with the prior art, the converter and dual-voltage battery pack of this application link the converter and the battery pack together. By controlling the operating parts on the battery pack, the locking button on the converter can be controlled, which can quickly and conveniently load and unload the converter and battery pack from the power tool, simplify the operation steps, reduce the operation time, and improve work efficiency. The dual-voltage battery pack can quickly become compatible with machines of different voltages or types. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of this application 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 recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a three-dimensional structural diagram of the converter in Embodiment 1 of this application;

[0044] Figure 2 This is an exploded view of the converter in Embodiment 1 of this application;

[0045] Figure 3 This is a three-dimensional structural diagram of the lock button in Embodiment 1 of this application;

[0046] Figure 4 This is a cross-sectional structural diagram of the first locking part in the first unlocked state in Embodiment 1 of this application;

[0047] Figure 5 This is a cross-sectional structural diagram of the first locking part in the first locking state in Embodiment 1 of this application;

[0048] Figure 6 This is a schematic diagram of the insert structure of the converter in Embodiment 1 of this application;

[0049] Figure 7 This is a three-dimensional structural diagram of the dual-voltage battery pack in Embodiment 2 of this application;

[0050] Figure 8 This is a cross-sectional view of the second locking part in the battery pack in the second locked state according to Embodiment 2 of this application;

[0051] Figure 9 This is a cross-sectional view of the second locking part in the second locked state of the dual-voltage battery pack in Embodiment 2 of this application;

[0052] Figure 10 This is a cross-sectional view of the second locking part in the second unlocked state of the dual-voltage battery pack in Embodiment 2 of this application;

[0053] Figure 11 , 12 This is a top view of the dual-voltage battery pack in Embodiment 2 of this application.

[0054] Explanation of key figure labels:

[0055] 1-Converter; 11-First housing; 111-First through slot; 12-Second housing; 121-Second through slot; 122-First limiting part; 123-Slot; 13-Lock button; 131-Lock button body; 1311-Main body part; 1312-Rib; 1313-First assembly part; 132-First locking part; 14-First elastic element; 15-First slider; 161-First positive insert; 162-Second positive insert; 163-First negative insert; 164-Second negative insert; 165-First signal insert; 166-Second signal insert; 17-Second sliding groove;

[0056] 2-Battery pack; 21-Outer shell; 211-Slot; 212-Third through slot; 213-Second limiting plate; 22-Cell assembly; 221-First cell assembly; 222-Second cell assembly; 23-Operating component; 231-Pressing part; 232-Second locking part; 233-Limiting protrusion; 24-Second elastic element; 25-Bracket; 251-Second assembly part; 261-First positive pin; 262-Second positive pin; 263-First negative pin; 264-Second negative pin; 265-First signal pin; 266-Second signal pin. Detailed Implementation

[0057] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0058] It should be noted that similar labels 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.

[0059] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0060] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0061] Example 1:

[0062] Reference Figures 1-5As shown, the converter 1 in this embodiment may include: a first housing 11, a second housing 12, a locking button 13, and a first elastic member 14. The first housing 11 may have a first through groove 111; the second housing 12 is mounted to the first housing 11, and the first housing 11 and the second housing 12 enclose an assembly space, and the second housing 12 may have a second through groove 121; the locking button 13 is movably mounted in the assembly space, and the locking button 13 is movably mounted in the assembly space in a vertical direction. Of course, the locking button 13 may include a locking button body 131 and a first locking portion 132 disposed on the locking button body 131. The first locking portion 132 has a first locked state and a first unlocked state. In the first locked state, the first locking portion 132 is at least partially exposed through the first through groove 111; in the first unlocked state, the first locking portion 132 is received in the assembly space; the first elastic member 14 is installed in the assembly space, and the first elastic member 14 has a tendency to cause the first locking portion 132 to change from the first locked state to the first unlocked state. The first elastic element 14 can be a structure that can provide elastic force, such as a spring or a sheet, which is understandable and acceptable to those skilled in the art.

[0063] Since the first elastic element 14 always applies an elastic force to the lock button 13, the first locking part 132 is always in the first unlocked state when not affected by an external force F. When an external force F is applied to the lock button body 131 to move the lock button body 131 toward the first housing 11, the first locking part 132 gradually protrudes from the first through groove 111, so that the first locking part 132 changes from the first unlocked state to the first locked state. If the converter 1 is mounted on a power tool, the first locking part 132 can be inserted into the groove on the power tool that mates with the first locking part 132, thereby achieving a fixed limit between the converter 1 and the power tool.

[0064] Based on this design, the first locking part 132 will not automatically pop out due to slight vibration or accidental bumps, ensuring smooth and unobstructed sliding installation between the converter 1 and the power tool. The first locking part 132 will only extend and lock with the power tool when a sufficient external force F is consciously applied (usually after the converter 1 is installed on the dual-voltage battery pack). This avoids the need for additional unlocking due to accidental locking of the converter 1 and the power tool. Simultaneously, since the first locking part 132 is always housed within the assembly space when not in use, unnecessary friction and collisions with other structures are avoided, extending the service life of the locking button 13.

[0065] Of course, this application is not limited to this. In other embodiments, the locking button 13 may also be installed in the assembly space in a horizontal direction or in an inclined direction, as long as the first locking part 132 can have a first locking state and a first unlocking state.

[0066] Specifically, refer to Figure 4 , Figure 5 As shown, in this embodiment, the height of the first locking part 132 can be greater than the wall thickness of the first housing 11. Based on this design, the first locking part 132 can have a first locking state protruding from the first through groove 111.

[0067] To ensure structural stability, the locking button 13 is limited in position within the assembly space to prevent excessive movement, as per [reference needed]. Figure 4 , Figure 5 As shown, in the first locked state, the upper surface of the lock button body 131 in this embodiment can abut against the first housing 11, and in the first unlocked state, the lower surface of the lock button body 131 in this embodiment can abut against the second housing 12.

[0068] To facilitate the switching of the first locking part 132 of the converter between the first locked state and the first unlocked state, refer to Figure 2 , Figure 3 As shown, the lock button body 131 in this embodiment includes a main body 1311 and a rib 1312 disposed under the main body 1311. In the first locked state, the upper surface of the main body 1311 abuts against the first housing 11. The rib 1312 may be partially exposed through the second through groove 121 or it may be housed in the assembly space. In the first unlocked state, the rib 1312 abuts against the second housing 12 while at least partially exposing the second through groove 121. This design facilitates the application of external force to the rib 1312, thereby applying the external force to the entire lock button body 131.

[0069] In the first unlocked state, refer to Figure 5 As shown, in this embodiment, the distance between the locking button body 131 and the first housing 11 can be less than or equal to the height of the portion of the rib 1312 exposed in the second through groove 121. When an external force F is applied to the rib 1312 to push the rib 1312 back toward the assembly space, the first locking portion 132 gradually protrudes from the first through groove 111. Based on this design, it can be ensured that when the rib 1312 is pushed to its limit position in the assembly space, the first locking portion 132 is at least partially exposed in the first through groove 111.

[0070] To ensure that the locking button 13 slides along a preset direction and to prevent the first locking part 132 from shifting position during the state transition between the first locked state and the first unlocked state, refer to Figure 2 and combined Figure 4 , Figure 5As shown, in this embodiment, the second housing 12 may be provided with a first limiting part 122, the rib plate 1312 may be movably disposed in the first limiting part 122, and the second through groove 121 may be formed on the first limiting part 122. Specifically, in this embodiment, the first limiting part 122 refers to the location of the recessed slot 123 on the second housing 12. The design of the slot 123 makes the second housing 12 have a recessed part of the housing. When the second through groove 121 is formed at the recessed part of the housing, the sidewall of the second through groove 121 forms a rigid limiting surface, and the rigid limiting surface and the sidewall of the rib plate 1312 form a sliding pair. When the rib plate 1312 is movably installed in the first limiting part 122, the rigid limiting surface can contact the rib plate 1312, so that the locking button 13 moves accurately along a preset path under the action of external force F, avoiding deflection or jamming, and ensuring the reliability of the movement of the locking button 13. Of course, this application is not limited to this. When a first limiting plate is arranged around the second through groove 121, a sliding pair can also be formed by the first limiting plate and the side wall of the stiffener 1312 to limit the locking button 13.

[0071] Because the first elastic element 14 generates a radial component force when compressed or stretched, if no constraint is applied to the end of the first elastic element 14, the first elastic element 14 will move radially, resulting in its axis offset and the inability to concentrate the elastic force. To solve the above problem, refer to Figure 4 , Figure 5 As shown, the lock button body 131 in this embodiment may be provided with a first mounting portion 1313. Specifically, the first mounting portion 1313 may be provided on the body portion 1311. The end of the first elastic member 14 facing the lock button body 131 is fixedly mounted on the first mounting portion 1313. According to this design, radial movement of the first elastic member 14 can be avoided, reducing the occurrence of axial offset of the first elastic member 14 and the inability to concentrate the elastic force. Of course, this application is not limited to this. In other embodiments, the first mounting portion 1313 may also be provided on the first housing 11, and the end of the first elastic member 14 facing the first housing 11 may be fixedly mounted on the first mounting portion 1313. Alternatively, in other embodiments, both the first housing 11 and the lock button body 131 may be provided with the first mounting portion 1313, and both ends of the first elastic member 14 may be fixedly mounted on the corresponding first mounting portion 1313.

[0072] To avoid the installation of the first assembly part 1313, the displacement of the locking button 13 along a preset direction is limited, refer to... Figure 4 , Figure 5As shown, in this embodiment, the lock button body 131 may be provided with a first mounting portion 1313. The distance between the first mounting portion 1313 and the first housing 11 may be greater than or equal to the distance between the lock button body 131 and the first housing 11. According to this design, when the first locking portion 132 is in the first locking state, the lock button body 131 may abut against the first housing 11, and the first mounting portion 1313 may be separate from or abut against the first housing 11.

[0073] Reference Figure 6 As shown, the converter in this embodiment may have a first positive insert 161, a second positive insert 162, a first negative insert 163, a second negative insert 164, a first signal insert 165, and a second signal insert 166. The axis of the first negative insert 163 may be collinear with the axis of the first signal insert 165 in a first direction, which may be approximately collinear with the length direction of the first positive insert 161. This first direction may also be in other directions, such as being approximately collinear with the height direction of the first positive insert 161. The axis of the second positive insert 162 may be collinear with the axis of the second signal insert 166 in a second direction, which may be collinear with the length direction of the first positive insert 161. The length direction of the second positive connector 162 is approximately collinear. This second direction can also be in other directions, such as being approximately collinear with the height direction of the second positive connector 162. The first signal connector 165 and the second signal connector 166 are disposed between the first positive connector 161 and the second negative connector 164. The first direction and the second direction can be approximately parallel or form an angle. In the first connection state, the first positive connector 161 can be electrically connected to the second positive connector 162, and the first negative connector 163 can be electrically connected to the second negative connector 164. In the second connection state, the first negative connector 163 can be electrically connected to the second positive connector 162. According to this design, by changing the connection state between the connectors inside the converter, the connection method of the battery cell group of the external device (such as a battery pack) connected to the converter can be changed, thereby enabling it to output different voltages.

[0074] Example 2:

[0075] Reference Figures 7-10As shown, the dual-voltage battery pack in this embodiment can be detachably installed with converter 1, which adopts the converter shown in Embodiment 1. The dual-voltage battery pack 2 may include a housing 21, a cell assembly 22, an operating member 23, and a second elastic member 24. The housing 21 is detachably mounted to the converter 1 and may have a slot 211 and a third through slot 212. The cell assembly 22 is fixedly mounted in the housing 21. The operating member 23 is vertically mounted in the housing 21 and may include a pressing portion 231 exposed in the slot 211 and a second locking portion 232 disposed on the pressing portion 231. The second locking portion 232 has a second locked state and a second unlocked state. In the second locked state, the second locking portion 232 is exposed in the third through slot 212; in the second unlocked state, the second locking portion 232 is housed in the housing 21. The second elastic member 24 is fixedly mounted in the housing 21 and has a tendency to cause the second locking portion 232 to transition from the second unlocked state to the second locked state. When the second locking part 232 is in the second locked state, it is inserted into the second through slot 121, and the first locking part 132 of the converter is in the first locked state. When the operating member 23 is in the second unlocked state, the second locking part 232 is separated from the second through slot 121, and the first locking part 132 of the converter is in the first unlocked state. The second elastic member 24 can be a spring or sheet, or other structure capable of providing elastic force, which is understandable and acceptable to those skilled in the art.

[0076] Since the second elastic member 24 always applies an elastic force to the operating member 23, the second locking part 232 is always in the second locked state and the first locking part 132 is always in the first locked state when not affected by an external force F. The converter 1 can change its state according to the state of the battery pack 2, thereby enabling the battery pack 2 and the converter 1 to be locked together on the power tool or unlocked together from the power tool.

[0077] Based on this design, the converter 1 and the battery pack 2 are linked together. By controlling the operating part 23 on the battery pack 2, the locking button 13 on the converter 1 can be controlled. This allows for quick and convenient loading and unloading of the converter 1 and the battery pack 2 from the power tool, simplifying the operation steps, reducing operation time, and improving work efficiency.

[0078] When an external force F is applied to the pressing part 231 of the operating member 23, the operating member 23 retracts towards the inside of the outer shell 21 against the elastic force of the second elastic member 24. When the second locking part 232 changes from the second locked state to the second unlocked state, the force exerted by the second locking part 232 on the button body 131 on the operating member 23 is canceled out by the external force F. The first elastic member 14 releases its elastic force to push the button body 131 towards the second shell 12, so that the first locking part 132 changes from the first locked state to the first unlocked state. If the converter 1 is mounted on a power tool, the first locking part 132 can be inserted into the groove on the power tool that mates with the first locking part 132, thereby achieving a fixed limit between the converter 1 and the power tool.

[0079] Of course, this application is not limited to this. In other embodiments, the operating member 23 may also be movably installed in the housing 21 in the horizontal direction or in the inclined direction, as long as the first locking part 132 can have a second locking state and a second unlocking state.

[0080] To ensure structural stability and guarantee that the second locking part 232 can be stably positioned in the second locked state, the elastic force of the second elastic member 24 in this embodiment can be greater than the elastic force of the first elastic member 14. Based on this design, under conditions where no external force F is applied, the second locking part 232 of the operating member 23 can always protrude from the third through groove 212 and abut against the lock button body 131, and the first locking part 132 of the adapter can always protrude from the first through groove 111.

[0081] To ensure that the operating member 23 slides along a preset direction and to prevent the second locking part 232 from shifting position during the state transition between the second locked state and the second unlocked state, refer to Figure 8 As shown, in this embodiment, the outer shell 21 may be provided with a second limiting part, and the operating member 23 may be movably disposed in the second limiting part. The slot 211 may be formed on the second limiting part. Specifically, in this embodiment, a second limiting plate 213 is formed inside the outer shell 21. The second limiting plate 213 surrounds the periphery of the slot 211. When the operating member 23 is movably installed in the outer shell 21, the second limiting plate 213 and the operating member 23 come into contact to form a sliding pair, so that the operating member 23 moves accurately along a preset path under the action of external force F, avoiding deflection or jamming, and ensuring the reliability of the movement of the operating member 23.

[0082] To facilitate limiting the movement of the operating component 23 and prevent slippage between the battery pack 2 and the converter 1, the second housing 12 of the converter 1 in this embodiment may be recessed with a slot 123, and a second through groove 121 may be provided in the slot 123. When the second locking part 232 is in the second locked state, the second locking part 232 is inserted into the slot 123 and abuts against the rib plate 1312; when the second locking part 232 is in the second unlocked state, the second locking part 232 is separated from the slot 123 and the rib plate 1312. According to this design, the sliding direction limitation between the converter 1 and the battery pack 2 can be achieved by the second locking part 232 extending into the slot 123.

[0083] Since the converter 1 and battery pack 2 are slidably mounted and the second locking part 232 extends into the slot 123 to limit the sliding direction, the converter 1 and battery pack 2 are relatively fixed. To facilitate the sliding installation between the converter 1 and battery pack 2, refer to... Figure 7 and combined Figure 1 As shown, in this embodiment, the converter 1 may be provided with a first slider 15, and the battery pack 2 may be provided with a first sliding groove (not shown) that cooperates with the first slider 15. Of course, this application is not limited to this; in other embodiments, the converter 1 may be provided with a first sliding groove, and the battery pack 2 may be provided with a first slider that cooperates with the first sliding groove, which is understandable and acceptable to those skilled in the art. To facilitate the sliding installation of the converter 1 onto the power tool, the converter 1 in this embodiment is provided with a second sliding groove 17. Therefore, the power tool needs to be provided with a second slider that cooperates with the second sliding groove 17. Of course, this application is not limited to this; in other embodiments, the converter 1 is provided with a second slider, and the power tool is provided with a second sliding groove that cooperates with the second slider. When the dual-voltage battery pack only includes the battery pack 2, to facilitate the installation of the battery pack 2 onto the power tool, the battery pack 2 in this embodiment may be provided with a third sliding groove, and the power tool is provided with a third slider that cooperates with the third sliding groove. Of course, this application is not limited to this; in other embodiments, the battery pack 2 is provided with a third slider, and the power tool is provided with a third sliding groove that cooperates with the third slider.

[0084] Specifically, refer to Figure 8 As shown, in this embodiment, the height of the second locking portion 232 can be greater than the thickness of the outer casing 21. Based on this design, the second locking portion 232 can have a second locking state that protrudes from the third through slot 212.

[0085] To ensure structural stability, the operating component 23 is limited within the housing 21 to prevent excessive movement, as per [reference needed]. Figure 8 As shown, in the second locked state, the operating member 23 in this embodiment abuts against the outer casing 21.

[0086] At the same time, to prevent the operating component 23 from extending too far into the housing 21 and to prevent the operating component 23 from falling into the housing 21, refer to Figure 10 As shown, the pressing part 231 in this embodiment may be provided with a limiting protrusion 233. In the second unlocked state, the limiting protrusion 233 abuts against the outer shell 21; in the second locked state, the distance between the limiting protrusion 233 and the outer shell 21 may be greater than or equal to the distance between the second locking part 232 and the outer shell 21. According to this design, the operating member 23 can be limited in the second unlocked state by the cooperation of the limiting protrusion 233 and the outer shell 21, so as to avoid excessive movement.

[0087] Reference Figure 8 and combined Figure 4 As shown, in the second locked state, the distance between the second locking portion 232 and the outer casing 21 can be greater than or equal to the height of the portion of the rib 1312 exposed in the second through groove 121 in the first unlocked state. When an external force F is applied to the pressing portion 231 of the operating member 23 to push the operating member 23 back toward the outer casing 21, the second locking portion 232 gradually protrudes out of the third through groove 212. According to this design, it can be ensured that when the operating member 23 is pushed toward the outer casing 21 to the limit position, the second locking portion 232 can at least partially expose the third through groove 212.

[0088] To securely mount the battery cell assembly 22 within the housing 21 and prevent positional displacement of the battery cell assembly 22 during power tool operation, refer to... Figure 8 As shown, the battery pack 2 in this embodiment may further include a bracket 25 that can be disposed in the housing 21, the battery cell group 22 is at least partially supported by the bracket 25, and the second elastic member 24 is fixedly installed between the bracket 25 and the housing 21.

[0089] Because the second elastic element 24 generates a radial component force when compressed or stretched, if no constraint is applied to the end of the second elastic element 24, the second elastic element 24 will move radially, resulting in its axis offset and the inability to concentrate the elastic force. To solve the above problem, refer to Figures 8-10 As shown, in this embodiment, the bracket 25 may be provided with a second mounting portion 251, and the end of the second elastic member 24 facing the bracket 25 is fixedly mounted on the second mounting portion 251. This design avoids radial movement of the second elastic member 24, reducing the occurrence of axial offset of the second elastic member 24 and the inability to concentrate the elastic force. Of course, this application is not limited to this; in other embodiments, the outer shell 21 is provided with a second mounting portion 251, and the end of the second elastic member 24 facing the outer shell 21 is fixedly mounted on the second mounting portion 251; or, in other embodiments, both the outer shell 21 and the bracket 25 are provided with second mounting portions 251, and both ends of the second elastic member 24 are fixedly mounted on the corresponding second mounting portions 251.

[0090] To avoid the installation of the second assembly part 251, the displacement of the operating member 23 along a preset direction is limited, referring to... Figure 8 As shown, in the second locked state, the distance between the second assembly part 251 and the outer shell 21 in this embodiment can be greater than or equal to the distance between the second locking part 232 and the outer shell 21. Based on this design, when the second locking part 232 is in the second unlocked state, the operating member 23 can abut against the outer shell 21 via the limiting protrusion 233, and the second assembly part 251 can be either separated from or abut against the outer shell 21.

[0091] It should be noted that, since the dual-voltage battery pack 2 in this application can output a first voltage and a second voltage by selecting different converters 1 or changing the connection state between the converter and the battery pack 2, the technical effect of outputting a first voltage and a second voltage is achieved by referring to... Figure 11 , Figure 12 and combined Figure 6As shown, the dual-voltage battery pack in this embodiment also includes a first positive pin 261, a second positive pin 262, a first negative pin 263, a second negative pin 264, a first signal pin 265, and a second signal pin 266. When the converter 1 is mounted on the battery pack 2, the first positive pin 161 is connected to the first positive pin 261, the second positive pin 162 is connected to the second positive pin 262, the first negative pin 163 is connected to the first negative pin 263, the second negative pin 164 is connected to the second negative pin 264, the first signal pin 165 is connected to the first signal pin 265, and the second signal pin 166 is connected to the second signal pin 266. The dual-voltage battery pack also includes multiple receiving slots for receiving pins. The second positive pin 262 and the first signal pin 265 are located in the same receiving slot, the first negative pin 263 and the second signal pin 266 are located in the same receiving slot, the first positive pin 261 is located in one receiving slot, and the second negative pin 264 is located in one receiving slot. The first positive pin 261, the second positive pin 262, the first negative pin 263 and the second negative pin 264 are all located in different receiving slots. The cell group 22 may include a first cell group 221 composed of multiple cells connected in series and a second cell group 222 composed of multiple cells connected in series. The first cell group 221 may have a first positive terminal and a first negative terminal, and the second cell group 222 may have a second positive terminal and a second negative terminal. The first positive terminal may be connected to the first positive pin 261, the first negative terminal may be connected to the first negative pin 263, the second positive terminal may be connected to the second positive pin 262, and the second negative terminal may be connected to the second negative pin 264. When the first positive pin 161 of the converter 1 is electrically connected to the second positive pin 162, and the first negative pin 163 is electrically connected to the second negative pin 164, after the converter 1 and the battery pack 2 are installed, the first positive pin 261 and the second positive pin 262 are electrically connected, and the first negative pin 263 and the second negative pin 264 are electrically connected, thereby realizing the parallel connection of the first cell group 221 and the second cell group 222, and thus outputting a first voltage. When the second positive connector 162 of converter 1 is electrically connected to the first negative connector 163, after converter 1 and battery pack 2 are installed, the second positive connector 262 can be electrically connected to the first negative connector 263. The first positive connector 261 and the second negative connector 264 serve as outputs, enabling the first cell group 221 and the second cell group 222 to be connected in series, thereby outputting a second voltage. The first cell group 221 can consist of 3, 4, 5, 6, or any number of cells. Similarly, the number of cells in the second cell group 222 can be the same as the number of cells in the first cell group 221. Based on this design, when the first cell group 221 and the second cell group 222 are connected in parallel, a low voltage and high current can be output, suitable for power tools with high current requirements, extending working time; when the first cell group 221 and the second cell group 222 are connected in series, a high voltage can be output, suitable for high-power power tools, improving discharge efficiency.

[0092] It should be noted that other structures not described in detail in converter 1, cell group 22 and battery pack 2 in this application, and other structures and working principles not described in detail can all adopt existing solutions in the prior art. Since they are not the focus of this application, the descriptions are omitted. Those skilled in the art can understand and accept them, so they will not be elaborated further.

[0093] In the description of the embodiments of this application, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly placed when the product of this application is used, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0094] In the description of the embodiments of this application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0095] In the description of the embodiments of this application, it should also be noted that the terms "first", "second", etc. used herein do not specifically refer to any order or sequence, nor are they intended to limit this application; they are merely used to distinguish components or operations described using the same technical terms.

[0096] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0097] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A converter, characterized in that, The converter (1) includes: A first housing (11) is provided with a first through groove (111); The second housing (12) is installed with the first housing (11), and the first housing (11) and the second housing (12) enclose an assembly space. The second housing (12) is provided with a second through groove (121). A locking button (13) is movably installed in the assembly space. The locking button (13) includes a locking button body (131) and a first locking part (132) disposed on the locking button body (131). The first locking part (132) has a first locking state and a first unlocking state. In the first locking state, the first locking part (132) is at least partially exposed in the first through groove (111). In the first unlocking state, the first locking part (132) is received in the assembly space. A first elastic element (14) is installed in the assembly space. The first elastic element (14) has a tendency to move from the first locking part (132) from the first locking state to the first unlocking state.

2. The converter according to claim 1, characterized in that, The height of the first locking part (132) is greater than the wall thickness of the first housing (11); and / or, In the first locked state, the upper surface of the lock button body (131) abuts against the first housing (11); and / or, In the first unlocked state, the lower surface of the lock button body (131) abuts against the second housing (12); and / or, The locking button body (131) and / or the first housing (11) are provided with a first mounting part (1313), and the end of the first elastic member (14) is fixedly mounted on the first mounting part (1313); or, The lock button body (131) is provided with a first assembly part (1313), and the distance between the first assembly part (1313) and the first housing (11) is greater than or equal to the distance between the lock button body (131) and the first housing (11).

3. The converter according to claim 1, characterized in that, The locking button body (131) includes a main body (1311) and a rib plate (1312) disposed under the main body (1311). In the first locked state, the upper surface of the main body (1311) abuts against the first housing (11). In the first unlocked state, the rib plate (1312) exposes at least part of the second through groove (121) and abuts against the second housing (12).

4. The converter according to claim 3, characterized in that, In the first unlocked state, the distance between the lock button body (131) and the first housing (11) is less than or equal to the height of the portion of the rib plate (1312) exposed in the second through groove (121); and / or, The second housing (12) is provided with a first limiting part (122), the stiffening plate (1312) is movably disposed in the first limiting part (122), and the second through groove (121) is opened on the first limiting part (122).

5. The converter according to claim 1, characterized in that, The converter (1) has a first positive connector (161), a second positive connector (162), a first negative connector (163), a second negative connector (164), a first signal connector (165), and a second signal connector (166). The axis of the first negative connector (163) is collinear with the axis of the first signal connector (165) in a first direction, and the axis of the second positive connector (162) is collinear with the axis of the second signal connector (166) in a second direction. The first positive connector (161) is electrically connected to the second positive connector (162), and the first negative connector (163) is electrically connected to the second negative connector (164). Alternatively, the first negative plug (163) is electrically connected to the second positive plug (162).

6. A dual-voltage battery pack, characterized in that, The dual-voltage battery pack includes: A battery pack (2) includes a housing (21), a cell assembly (22), an operating element (23), and a second elastic element (24); wherein the housing (21) is detachably installed with the converter (1), and the housing (21) is provided with a slot (211) and a third through slot (212); the cell assembly (22) is fixedly installed in the housing (21); the operating element (23) is movably installed in the housing (21), and the operating element (23) includes a pressing part (231) exposed in the slot (211) and a pressing part disposed in the slot (231). A second locking portion (232) on the part (231); the second locking portion (232) has a second locking state and a second unlocking state. In the second locking state, the second locking portion (232) is exposed in the third through groove (212); in the second unlocking state, the second locking portion (232) is received in the outer shell (21); the second elastic member (24) is fixedly installed in the outer shell (21), and the second elastic member (24) has a tendency to move the second locking portion (232) from the second unlocking state to the second locking state; The battery pack (2) can be detachably installed with the converter (1) as described in any one of claims 1 to 5. When the second locking part (232) is in the second locking state, the second locking part (232) is inserted into the second through slot (121), and the first locking part (132) of the converter is in the first locking state. When the second locking part (232) is in the second unlocking state, the second locking part (232) is separated from the second through slot (121), and the first locking part (132) of the converter is in the first unlocking state.

7. The dual-voltage battery pack according to claim 6, characterized in that, The elastic force of the second elastic element (24) is greater than the elastic force of the first elastic element (14); and / or, The outer casing (21) is provided with a second limiting part, the operating member (23) is movably disposed in the second limiting part, and the slot (211) is formed on the second limiting part; and / or, One of the converter (1) and the housing (21) is provided with a first slider (15), and the other is provided with a first groove that mates with the first slider (15); and / or, The height of the second locking part (232) is greater than the thickness of the outer shell (21); and / or, In the second locked state, the operating member (23) abuts against the housing (21); and / or, The pressing part (231) is provided with a limiting protrusion (233). In the second unlocked state, the limiting protrusion (233) abuts against the outer shell (21); in the second locked state, the distance between the limiting protrusion (233) and the outer shell (21) is greater than or equal to the distance between the second locking part (232) and the outer shell (21); and / or, The locking button body (131) includes a main body (1311) and a rib plate (1312) disposed under the main body (1311). The second housing (12) of the converter (1) is recessed with a slot (123). The second through groove (121) is disposed in the slot (123). When the second locking part (232) is in the second locking state, the second locking part (232) is inserted into the slot (123) and abuts against the rib plate (1312). When the second locking part (232) is in the second unlocking state, the second locking part (232) is separated from the slot (123) and the rib plate (1312).

8. The dual-voltage battery pack according to claim 6, characterized in that, The battery pack (2) further includes a bracket (25) disposed in the housing (21), the battery cell assembly (22) is at least partially supported by the bracket (25), and the second elastic member (24) is fixedly installed between the bracket (25) and the housing (21).

9. The dual-voltage battery pack according to claim 8, characterized in that, The outer casing (21) and / or the bracket (25) are provided with a second mounting part (251), and the end of the second elastic member (24) is fixedly mounted on the second mounting part (251); or, The bracket (25) is provided with a second assembly part (251). In the second locking state, the distance between the second assembly part (251) and the outer shell (21) is greater than or equal to the distance between the second locking part (232) and the outer shell (21).

10. The dual-voltage battery pack according to claim 6, characterized in that, It also includes a first positive pin (261), a second positive pin (262), a first negative pin (263), a second negative pin (264), a first signal pin (265), a second signal pin (266), and a plurality of receiving slots for receiving the pins, wherein the first negative pin (263) and the first signal pin (265) are located in the same receiving slot, and the second positive pin (262) and the second signal pin (266) are located in the same receiving slot; The battery cell assembly (22) includes a first battery cell assembly (221) composed of multiple battery cells connected in series and a second battery cell assembly (222) composed of multiple battery cells connected in series. The first battery cell assembly (221) has a first positive electrode and a first negative electrode, and the second battery cell assembly (222) has a second positive electrode and a second negative electrode. The first positive electrode is connected to the first positive pin (261), the first negative electrode is connected to the first negative pin (263), the second positive electrode is connected to the second positive pin (262), and the second negative electrode is connected to the second negative pin (264).

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