Battery pack adapter module and electric appliance

Abstract

The utility model discloses a battery pack switching module and electric appliance for connecting battery pack and electric appliance body, it includes: electricity terminal for with battery pack plug -in electricity taking, and shell, including: left casing has first adaptation surface for with electric appliance left side external contour is adapted, right casing with left casing can be detached buckle, it has second adaptation surface for with electric appliance right side external contour is adapted, wherein, left casing and right casing buckle after middle are provided with the assembly space for fixing electricity terminal. A kind of battery pack switching module and electric appliance of the application, it is convenient to low -cost match different battery pack, design and production are more flexible, and more general.

Description

Technical Field

[0001] This utility model relates to the field of electric appliance technology, and more specifically, to a battery pack adapter module and an electric appliance. Background Technology

[0002] Currently, power appliances (such as power tools and garden equipment) commonly use detachable battery packs for power. However, traditional designs typically integrate the battery pack interface directly into the appliance's housing. This integrated structure necessitates the development of dedicated appliance molds for each battery pack, regardless of its specifications or brand, due to differences in interface shape, size, electrode position, or guide structure. This significantly increases R&D and production costs and also results in a lack of compatibility between the appliance and different battery packs, making it difficult for users to flexibly replace or upgrade battery packs, leading to poor versatility. The practice of creating new molds to accommodate new battery packs is inefficient and wasteful of resources, limiting the product's market adaptability and user convenience.

[0003] Therefore, there is an urgent need for a technical solution that can solve the problem of battery pack interface standardization and improve the universality of the device itself. Utility Model Content

[0004] This utility model provides a battery pack adapter module and an electric appliance, aiming to solve the problems of high mold cost and poor versatility caused by the integrated molding of the battery pack interface and the body in traditional electric appliances.

[0005] To achieve the above objectives, in a first aspect, this application provides a battery pack adapter module for connecting a battery pack and an electric appliance body, comprising: Power terminals are used to connect to the battery pack for power intake and to establish an electrical connection with the electric appliance body; and The housing includes: The left housing has a first mating surface for adapting to the outer contour of the left side of the electric appliance to achieve a shape fit. The right housing, which is detachably fastened to the left housing, has a second fitting surface for adapting to the outer contour of the right side of the electric appliance to achieve a shape fit. The left and right housings, when fastened together, have an assembly space in the middle for fixing the electrical terminals.

[0006] The above technical solution achieves physical separation between the battery pack interface and the electric appliance body, eliminating the need for molds to be made for specific battery packs. The split design of the connection module ensures reliable fixing of the power terminals and allows the adapter module to fit closely to the contours of different appliances, fundamentally solving the core problems of high mold costs and poor versatility caused by traditional integrated interfaces.

[0007] In conjunction with the first aspect, a further technical solution is provided, wherein a first limiting groove is provided on the inner side of the left housing, and a second limiting groove is provided on the inner side of the right housing. After the left housing and the right housing are fastened together, the first limiting groove and the second limiting groove together constitute a limiting structure for clamping the power terminal.

[0008] The above technical solution utilizes the limiting structure formed when the left and right shells are fastened together to precisely constrain the spatial position of the power terminals, preventing them from shifting or loosening when inserting or removing the battery pack, ensuring the stability and safety of the electrical connection, and simplifying the terminal assembly process.

[0009] In conjunction with the first aspect, a further technical solution is provided whereby the left housing is provided with at least one first stud, and the right housing is provided with second studs in number and position corresponding to the first studs; the first studs and the corresponding second studs are connected by fasteners, so that the left housing and the right housing are fixed as one unit.

[0010] The above technical solution enables the left and right housings to be quickly locked together through the cooperation of studs and fasteners, which greatly improves assembly efficiency. The corresponding design of the stud position ensures the housing fastening accuracy, avoids battery pack misalignment or structural interference problems, and enhances the overall structural strength.

[0011] In conjunction with the first aspect, a further technical solution is that the first stud has a screw hole, and the second stud has a countersunk hole for receiving the end of the first stud; or, the second stud has a screw hole, and the first stud has a countersunk hole for receiving the end of the second stud.

[0012] By using the above technical solution, the countersunk hole is used to accommodate the end of the stud on the opposite side, so that the left and right shells fit tightly together when they are fastened, achieving better positioning and fixation, and reducing the overall thickness; at the same time, the stud end is hidden to avoid scratching the battery pack or the user, improving product safety and aesthetics.

[0013] In conjunction with the first aspect, a further technical solution is provided, wherein the left housing is provided with a first abutting surface for abutting against the left side of the electric appliance body, and the right housing is provided with a second abutting surface for abutting against the right side of the electric appliance body.

[0014] The above technical solution prevents the adapter module from sliding along the surface of the appliance under vibration by axially limiting the contact surface and the side of the appliance body, thus ensuring installation stability. Together with the adapter surface, it forms a three-dimensional positioning, improving the matching accuracy between the module and the appliance body and resulting in a better overall appearance.

[0015] In conjunction with the first aspect, a further technical solution is provided in which the housing is provided with a guide structure that is slidably connected to the battery pack.

[0016] Through the above technical solution and the standardized slide rail / groove design, the same adapter module can be adapted to the guiding requirements of battery packs of different specifications with corresponding sliding structures, realizing quick blind insertion and mechanical locking of battery packs, and significantly improving the convenience and reliability of battery replacement.

[0017] In conjunction with the first aspect, a further technical solution is that the guide structure includes grooves or slide rails disposed on the left and right housings.

[0018] The above technical solution provides two optional guide structure forms (slide rail or groove), which can be flexibly selected according to the battery pack interface type, enhancing the design freedom of the adapter module and reducing the difficulty of adapting to different battery pack structures.

[0019] In conjunction with the first aspect, a further technical solution is that the first and second adapting surfaces are planes, curved surfaces, or surfaces formed by a combination of planes and curved surfaces.

[0020] Through the above technical solutions, the design of planar, curved, or composite surfaces allows the adapter module to fit closely to various irregularly shaped appliance bodies (such as arc-shaped handles and polygonal housings), breaking through the shape limitations of traditional planar interfaces and expanding application scenarios.

[0021] Secondly, this application provides an electric appliance, including the battery pack adapter module of the first aspect.

[0022] With the above technical solution, the device body only needs to reserve a standardized installation area, and can be quickly adapted to multiple brands / models of battery packs by replacing different specifications of adapter modules, completely avoiding the problem of scrapping the device body mold due to battery pack iteration.

[0023] Thirdly, the main body of the electric appliance is provided with a first through hole for the first stud to pass through and a second through hole for the second stud to pass through.

[0024] The above technical solution utilizes through holes to allow the studs of the adapter module to pass directly through the appliance body, and locks the module with nuts to achieve a rigid connection between the module and the appliance, significantly improving vibration resistance. The adapter module and the electric appliance body are fixedly connected in one go using a corresponding number of fasteners, eliminating the need for a complex structure of studs inside the appliance body and reducing material and labor costs.

[0025] In summary, this application has at least one of the following beneficial technical effects: 1. Significantly reduce mold costs: Through the standardized design of the adapter module, the electric appliance body does not need to be re-molded due to changes in battery pack specifications. It can be compatible with new battery packs simply by replacing the low-cost adapter module, saving development investment and mold costs.

[0026] 2. Significantly improve versatility and flexibility: Users can freely choose different battery pack specifications by replacing the adapter module, breaking brand and model restrictions; appliance manufacturers can expand the number of battery pack compatible models based on the same platform, shortening the product launch cycle.

[0027] 3. Optimize structural reliability and safety: The split housing with limiting grooves ensures precise fixing of the power terminals; the countersunk stud design enhances the connection strength between the housings; the contact surface and guide structure respectively improve the mechanical stability between the module and the device body and the battery pack, avoiding poor contact or accidental detachment.

[0028] 4. Enhance product compatibility and user experience: The adaptable surface has a high degree of freedom in shape and can be matched with various irregularly shaped utensils; the standardized slide rail / groove design supports quick insertion and removal of battery packs, reducing the user's operating threshold and improving ease of use. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0030] Figure 1 This is a front perspective view of the battery pack adapter module of this application; Figure 2 This is a cross-sectional view of the back of the battery pack adapter module of this application; Figure 3 This is a schematic cross-sectional view of the battery pack adapter module of this application; Figure 4 This is a structural schematic diagram of another cross-section of the battery pack adapter module; Figure 5 A front view of the exploded structure of the battery pack adapter module; Figure 6 A rear view of the exploded structure of the battery pack adapter module; Figure 7 This is a schematic diagram showing the assembly status of the battery pack adapter module and the electric appliance body. Figure 8 This is a schematic diagram showing the battery pack adapter module in its disassembled state before being assembled with the electric appliance body. Figure 9 for Figure 8 Another structural diagram from a different perspective; Figure 10 This is a cross-sectional view of the battery pack adapter module assembled with the electric appliance body. Figure 11This is a schematic diagram of the structure of an electric appliance.

[0031] Figure label: 1. Power terminal; 11. Guide structure; 2. Left housing; 21. First adapter surface; 22. First stud; 23. First limiting groove; 24. First abutment surface; 3. Right housing; 31. Second adapter surface; 32. Second stud; 321. Countersunk hole; 33. Second limiting groove; 34. Second abutment surface; 100. Adapter module; 200. Body; 201. First through hole; 202. Second through hole; 300. Battery pack. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 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.

[0034] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0035] The embodiments of this application will now be described in detail with reference to the accompanying drawings. Unless otherwise specified, the features in the following embodiments can be combined with each other.

[0036] Example 1

[0037] Please see Figures 1-6This embodiment provides a battery pack adapter module 100 to solve the problems of poor interface universality and high mold cost of traditional electric appliance battery packs. The module connects the battery pack and the electric appliance body 200, enabling power transmission and structural adaptation. The adapter module 100 mainly consists of a power terminal 1 and a housing, which are precisely assembled to form a complete functional unit.

[0038] The power terminal 1 includes a metal conductive component. One end has a plug-in portion that matches the battery pack interface, allowing for stable connection with the battery pack to obtain power. The other end has a wiring portion that connects to the internal circuitry of the electric appliance body, enabling stable transmission of power from the battery pack to the electric appliance body and ensuring normal operation. The overall dimensions of the power terminal 1 are designed based on the power supply parameters of common battery packs, and its conductivity and structural strength meet the power requirements of the electric appliance under different operating conditions.

[0039] To further enhance reliability, a floating limiting structure is adopted between the power terminal 1 and the housing: the terminal can slide slightly along the axis in the middle limiting groove to compensate for the difference in thermal expansion between plastic and metal and prevent the solder joint from being cracked during alternating hot and cold temperatures; the tail of the terminal is equipped with an elastic finger pressure seat (not shown in the figure), which is compatible with both plug-in type and fisheye needle type wire harness connection methods, and users can change the wire type on site without additional tools.

[0040] Please see Figure 1 The housing is injection molded from ABS engineering plastic, combining lightweight and high strength, providing reliable protection for the electrical terminal 1 and achieving structural adaptation with the electric appliance body. The housing includes a left housing 2 and a right housing 3, which are joined together by a detachable structure to form an integral structure. The outer side wall of the left housing 2 is the first adapter surface 21, and the outer side wall of the right housing 3 is the second adapter surface 31. The shapes of these two adapter surfaces are specifically designed according to the left and right outer contours of the target electric appliance: if the electric appliance body is a square housing, the adapter surface can be designed as a plane; if it is an arc-shaped handle, the adapter surface is designed as a corresponding curved surface; if the appliance body has a complex contour with a transition between planes and curved surfaces, the adapter surface can adopt a combination of planes and curved surfaces. Through the close fit between the adapter surface and the contour of the appliance body, the appearance consistency between the adapter module 100 and the appliance body can be ensured, and the stability of the structural connection can be enhanced.

[0041] The housing also features a guide structure 11 that slides through the battery pack. Specifically, this consists of symmetrical guide grooves or slide rails along the length of the top of the left housing 2 and right housing 3, with cross-sectional dimensions adapted to the slide rails or grooves at the bottom of the battery pack. When the battery pack is connected to the adapter module 100, the slide rails of the battery pack slide along the guide grooves until they are fully inserted into the power terminal 1, achieving simultaneous mechanical positioning and electrical connection. This standardized design of the guide structure 11 allows the same adapter module 100 to be compatible with battery packs from different brands that have the same slide rail specifications, improving the product's versatility.

[0042] A replaceable wear-resistant insert is embedded at the bottom of the guide groove. When the insert wears out, it can be pulled out and replaced individually, eliminating the need to scrap the entire shell and extending its lifespan.

[0043] In some implementations, to improve the performance of the housing, continuous "maze" ribs can be added to the housing during injection molding, so that the front, middle and rear functional areas form an integrated channel that does not interfere with each other: foreign objects in the front guide area are blocked by the ribs; heat in the middle electrical area can be diffused along the ribs; and stress in the rear contact area is shared by the ribs, so that the plastic is not easy to crack when the whole machine is dropped.

[0044] Please see Figures 2 to 6 To achieve a reliable connection between the left housing 2 and the right housing 3, multiple first studs 22 are evenly distributed circumferentially along the edge of the left housing 2, each with a through screw hole at its center. The right housing 3 has the same number of second studs 32 at corresponding positions, each with a countersunk hole 321 on its end face. The diameter of the countersunk hole 321 is slightly larger than the outer diameter of the first stud 22. During assembly, the end of the first stud 22 is inserted into the countersunk hole 321 of the second stud 32, and a screw is passed through the screw hole and tightened to achieve a rigid connection between the left housing 2 and the right housing 3. This countersunk hole 321 design not only ensures the fitting accuracy of the housings but also avoids the risk of scratches caused by exposed stud ends, improving the safety and aesthetics of the product.

[0045] The screw head is fully recessed into countersunk hole 321, and there are no sharp protrusions on the overall appearance of the machine, which facilitates automated recycling and disassembly.

[0046] Please see Figure 4 The left housing 2 has a first abutment surface 24 on the side near the main body of the electric appliance, and the right housing 3 has a corresponding second abutment surface 34. Both abutment surfaces are planes perpendicular to the axis of the main body of the electric appliance. When the adapter module is installed on the appliance body, the first abutment surface 24 abuts against the left end face of the appliance body, and the second abutment surface 34 abuts against the right end face of the appliance body, forming an axial limit. This effectively prevents the module from sliding along the appliance surface under vibration conditions, further enhancing the stability of the structure.

[0047] In some implementations, a compressible foam pad can be pre-attached to the inside of the contact surface to absorb high-frequency vibrations and block noise transmission, thereby improving the user experience.

[0048] Please see Figures 3 to 6 The left housing 2 has a first limiting groove 23 along its length on its inner side, and the right housing 3 has a corresponding second limiting groove 33 on its inner side. The cross-sectional shape of these two limiting grooves matches the shape of the power terminal 1. When the left housing 2 and the right housing 3 are fastened together, the first limiting groove 23 and the second limiting groove 33 join together to form a complete limiting channel, which is the assembly space for fixing the power terminal 1. After the power terminal 1 is embedded in this channel, its displacement in the vertical and horizontal directions is completely constrained. It is fixedly connected to the first stud 22 by a screw passing through the second stud 32, which can effectively prevent the terminal from becoming loose or shifting when inserting or removing the battery pack, ensuring the stability of the electrical connection.

[0049] A flexible chamfer is added to the edge of the slot, which not only facilitates the "blind insertion" of the terminals, but also avoids the sharp edges from cutting the operator's fingers.

[0050] The power terminal 1 can be made into a standard accessory according to different battery pack specifications, which can achieve better versatility.

[0051] Example 2

[0052] Please see Figures 7 to 11 This embodiment provides an electric appliance, such as an electric screwdriver or a handheld vacuum cleaner. This embodiment is a portable vacuum cleaner, which includes an appliance body 200 and a battery pack adapter module 100 as in Embodiment 1. The outer shell of the appliance body 200 has multiple first through holes 201 and second through holes 202 corresponding to the mounting positions of the adapter module 100. The positions of the first through holes 201 correspond to the first studs 22 of the left housing 2, and the positions of the second through holes 202 correspond to the second studs 32 of the right housing 3. The diameter of the through holes is slightly larger than the outer diameter of the studs to ensure that the studs can pass through smoothly.

[0053] During installation, first connect the wiring portion of the power terminal 1 to the internal circuitry of the appliance body 200; then, align the first adapter surface 21 of the left housing 2 with the outer contour of the left side of the appliance body 200, allowing the first stud 22 to pass through the first through hole 201; simultaneously, align the second adapter surface 31 of the right housing 3 with the outer contour of the right side of the appliance body 200, allowing the second stud 32 to pass through the second through hole 202; snap the left housing 2 and right housing 3 together, inserting the first stud 22 into the countersunk hole 321 of the second stud 32; finally, tighten the first stud 22 and the second stud 32 with screws to complete the fixing of the adapter module 100 to the appliance body 200. At this time, the first abutment surface and the second abutment surface respectively abut against the left and right end faces of the appliance body 200, achieving omnidirectional positioning and ensuring that the adapter module 100 is securely installed.

[0054] The entire assembly process follows the "no flipping, no misalignment, no tool borrowing" principle. 90% of the production line processes can be completed by a single electric batch. After-sales service users can also manually replace modules within two minutes without disassembling the entire machine.

[0055] Please see Figure 11 In use, the battery pack 300 is slid into the adapter module 100 along the guide structure 11, and power is supplied by connecting the power terminal 1 to the interface of the battery pack 300. The operation is convenient and the connection is reliable. When it is necessary to replace the battery pack 300 with a different specification, only the adapter module 100 that is compatible with the new battery pack 300 needs to be replaced. There is no need to replace the device body 200, which significantly reduces the cost of use and the waste of resources.

[0056] For enterprise users, multiple appearance versions can be derived by changing the mold cavities of the left and right shells on the same production line to adapt to round tubes, square tubes, and irregular handles, realizing a platform strategy of "one set of terminals + multiple sets of shells" and further reducing mold investment and inventory pressure.

[0057] The battery pack adapter module provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A battery pack adapter module, characterized in that, For connecting the battery pack and the electric appliance body, it includes: Power terminals are used to connect to the battery pack for power intake and to establish an electrical connection with the electric appliance body; and The housing includes: The left housing has a first mating surface for adapting to the outer contour of the left side of the electric appliance to achieve a shape fit. The right housing, which is detachably fastened to the left housing, has a second fitting surface for adapting to the outer contour of the right side of the electric appliance to achieve a shape fit. The left and right housings, when fastened together, have an assembly space in the middle for fixing the electrical terminals.

2. The battery pack adapter module according to claim 1, characterized in that, The left housing has a first limiting groove on its inner side and the right housing has a second limiting groove on its inner side. When the left housing and the right housing are fastened together, the first limiting groove and the second limiting groove together form a limiting structure for clamping the power terminal.

3. The battery pack adapter module according to claim 1 or 2, characterized in that, The left housing is provided with at least one first stud, and the right housing is provided with second studs in number and position corresponding to the first studs; the first studs and the corresponding second studs are connected by fasteners, so that the left housing and the right housing are fixed as one unit.

4. The battery pack adapter module according to claim 3, characterized in that, The first stud has a screw hole, and the second stud has a countersunk hole for receiving the end of the first stud; or, the second stud has a screw hole, and the first stud has a countersunk hole for receiving the end of the second stud.

5. The battery pack adapter module according to claim 3, characterized in that, The left housing has a first contact surface for abutting against the left side of the electric appliance body, and the right housing has a second contact surface for abutting against the right side of the electric appliance body.

6. The battery pack adapter module according to claim 1, characterized in that, The housing is provided with a guide structure that is slidably connected to the battery pack.

7. The battery pack adapter module according to claim 6, characterized in that, The guide structure includes grooves or slide rails provided on the left and right housings.

8. The battery pack adapter module according to claim 1, characterized in that, The first and second adapter surfaces are planes, curved surfaces, or surfaces formed by a combination of planes and curved surfaces.

9. An electric appliance, characterized in that, Includes the battery pack adapter module as described in any one of claims 1 to 8.

10. An electric appliance, characterized in that, Including the battery pack adapter module as described in claim 3, the electric appliance body is provided with a first through hole for the first stud to pass through and a second through hole for the second stud to pass through.

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