Battery pack
By adopting an arc-shaped docking plate and arc-shaped electrode sheet design in the battery pack, the problem of poor contact caused by electrode sheet deformation is solved, thereby achieving stable power supply and improved safety of the battery pack.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SUZHOU HARD IND & TRADE CO LTD
- Filing Date
- 2026-01-30
- Publication Date
- 2026-05-01
AI Technical Summary
During long-term use, the electrode plates of existing battery packs undergo irreversible plastic deformation or fatigue deformation due to the lack of supporting structure, resulting in poor electrical contact and unstable power supply.
It employs a docking device and a power supply device, utilizing an arc-shaped docking plate and arc-shaped electrode plate design. Through the fit of the arc-shaped docking plate and arc-shaped electrode plate, it provides stable electrical contact and avoids poor contact caused by deformation.
This improves the stability and safety of the battery pack, avoids poor contact and current concentration caused by deformation, and ensures long-term stable circuit conduction.
Smart Images
Figure CN121964978A_ABST
Abstract
Description
A battery pack Technical Field
[0001] This invention relates to the field of power tool technology, and in particular to a battery pack. Background Technology
[0002] Currently, cylindrical or near-cylindrical battery packs are commonly used to power small power tools. These battery packs have a compact internal space, and to achieve a reliable electrical connection with the side electrodes of the internal cylindrical batteries (such as lithium-manganese batteries and alkaline batteries), the internal electrode plates are typically designed as elastic, wave-shaped sheets. These electrode plates are generally stamped from metal sheets, and their wavy, arched portions maintain continuous lateral elastic contact with the cylindrical outer surface or end face of the battery to facilitate current conduction.
[0003] However, in actual long-term use, due to the lack of a support structure for the electrode plates, their wavy structure is prone to irreversible plastic deformation or fatigue deformation, leading to unstable power supply, momentary power outages, or complete inability to work, i.e., poor contact problems.
[0004] Therefore, existing technologies still need to be improved and developed. Summary of the Invention
[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a battery pack that solves the problems of electrode deformation and poor electrical contact in existing battery packs during long-term use.
[0006] The technical solution of the present invention is as follows: a battery pack, comprising a docking device and a power supply device, wherein a docking channel is formed on the docking device, and a first curved electrode plate and a second curved electrode plate are concentrically disposed at the end of the docking channel; the power supply device comprises: a housing, at least partially inserted into the docking channel; a docking circular groove is formed at the end of the housing, the docking circular groove being used to insert the first curved electrode plate and the second curved electrode plate; a battery cell, disposed within the housing; and a control board, disposed within the housing and connected to the battery cell; wherein an arc-shaped docking plate extending circumferentially is disposed within the docking circular groove; a first contact piece and a second contact piece are disposed on the control board, the end of the first contact piece extending to the side wall of the docking circular groove for contacting and conducting the first curved electrode plate; and the end of the second contact piece extending to the side wall of the arc-shaped docking plate for contacting and conducting the second curved electrode plate.
[0007] The battery pack wherein the curvature of the first curved electrode sheet is the same as the curvature of the sidewall of the docking groove, and the first contact sheet is attached to the first curved electrode sheet; and / or, the curvature of the second curved electrode sheet is the same as the curvature of the arc-shaped docking plate, and the second contact sheet is attached to the second curved electrode sheet.
[0008] The battery pack includes a mounting hole formed at the bottom of the docking groove; a data interface is provided on the control board, and the data interface is plugged into the mounting hole; the mounting hole is located at the center of the docking groove; two arc-shaped docking plates are provided, and the two arc-shaped docking plates are symmetrically arranged on both sides of the mounting hole.
[0009] The battery pack, wherein the data interface is fitted with an LED lampshade.
[0010] The battery pack, wherein a plurality of limiting protrusions are provided on the side wall of the docking channel; a plurality of limiting slots are provided on the outer side wall of the housing; the limiting protrusions are assembled with the limiting slots; wherein the limiting slot includes an insertion section extending axially along the housing and an extension section extending circumferentially along the housing, one end of the insertion section is located on the end face of the housing, and the other end is connected to the extension section.
[0011] In the battery pack, the depth of the insertion segment in each of the limiting slots is not equal.
[0012] The battery pack wherein the first contact piece and the second contact piece are arranged along the diameter direction of the mating groove.
[0013] In the battery pack, the first contact piece is a positive conductive piece, and the second contact piece is a negative conductive piece; or, the second contact piece is a positive conductive piece, and the first contact piece is a negative conductive piece.
[0014] The battery pack, wherein the docking device further includes a third curved electrode plate, the third curved electrode plate being disposed at the center of the docking channel; the control board is also provided with a third contact plate, the end of the third contact plate extending to the center of the docking groove, the third contact plate being used to contact and conduct the third curved electrode plate.
[0015] The battery pack includes a second curved electrode sheet that is annular and positioned at the center of the docking channel. The docking device further includes a fourth curved electrode sheet, which is symmetrically disposed on both sides of the second curved electrode sheet along with the first curved electrode sheet. The control board is also provided with a fourth contact piece, the end of which extends to the side wall of the docking groove, and the fourth contact piece is symmetrically disposed on both sides of the docking groove along with the first contact piece. The fourth contact piece is used to contact and conduct electricity to the fourth curved electrode sheet.
[0016] Compared with the prior art, the embodiments of the present invention have the following advantages: The battery pack disclosed in the present invention connects the electrical components via a docking device. Through the assembly of the power supply device and the docking device, electrical energy can be flexibly replenished to the electrical components. Specifically, the power supply device includes a battery cell that stores electrical energy. When the housing is inserted into the docking channel, the first curved electrode plate and the second curved electrode plate are inserted into the docking groove and respectively connect with the first contact plate and the second contact plate, thereby achieving circuit continuity. Setting both the first and second contact plates on arc-shaped surfaces facilitates the adaptation of the curved first and second curved electrode plates. Utilizing the uniformity and stability of the arc-shaped electrode plates helps maintain structural stability during long-term use. During repeated disassembly and assembly, effective contact between the first curved electrode plate and the first contact plate, and between the second curved electrode plate and the second contact plate, can be maintained, avoiding poor contact or current concentration caused by deformation, thus improving the stability and safety of the battery pack. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 is an assembly diagram of the battery pack in this invention; Figure 2 is a structural schematic diagram of the battery pack in one embodiment of this invention; Figure 3 is a structural schematic diagram of the power supply device in one embodiment of this invention; Figure 4 is an axial cross-sectional view of the power supply device in one embodiment of this invention; Figure 5 is an exploded view of the power supply device in one embodiment of this invention; Figure 6 is a structural schematic diagram of the docking device in another embodiment of this invention; Figure 7 is a structural schematic diagram of the power supply device in another embodiment of this invention; Figure 8 is a structural schematic diagram of the docking device in another embodiment of this invention; Figure 9 is a structural schematic diagram of the power supply device in another embodiment of this invention.
[0019] Among them, 10, docking device; 11, docking channel; 12, first curved surface electrode plate; 13, second curved surface electrode plate; 14, limiting protrusion; 15, third curved surface electrode plate; 16, fourth curved surface electrode plate; 20, power supply device; 21, housing; 211, docking circular groove; 212, arc-shaped docking plate; 213, mounting hole; 214, limiting slot; 2141, insertion section; 2142, extension section; 22, battery cell; 23, control board; 231, first contact piece; 232, second contact piece; 233, data interface; 234, LED lamp cover; 235, third contact piece; 236, fourth contact piece. Detailed Implementation
[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0021] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.
[0022] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.
[0023] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.
[0024] For ease of description, spatial relational terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relational terms are intended to encompass not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways, and the spatial relational terms used herein will be interpreted accordingly.
[0025] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.
[0026] Referring to Figures 1, 2, 3, and 4, one embodiment of this application discloses a battery pack, including a docking device 10 and a power supply device 20. The docking device 10 has a docking channel 11, and a first curved electrode plate 12 and a second curved electrode plate 13 are concentrically disposed at the end of the docking channel 11. The power supply device 20 includes a housing 21, a battery cell 22, and a control board 23. The housing 21 is at least partially inserted into the docking channel 11; a docking circular groove 211 is formed at the end of the housing 21 for inserting the first curved electrode plate 12 and the second curved electrode plate 13; the battery cell 22 is disposed within the housing 21; the control board 23 is disposed within the housing 21 and connected to the battery cell 22. An arc-shaped docking plate 212 extending circumferentially is disposed within the docking circular groove 211. The control board 23 is provided with a first contact piece 231 and a second contact piece 232. The end of the first contact piece 231 extends to the side wall of the docking groove 211 and is used to contact and conduct the first curved electrode piece 12. The end of the second contact piece 232 extends to the side wall of the arc-shaped docking plate 212 and is used to contact and conduct the second curved electrode piece 13.
[0027] The battery pack disclosed in this embodiment is used to replenish the power of electrical devices. For example, electrical devices such as electric grinders, flashlights, remote controls, electric toys, and handheld fans are trending towards miniaturization to meet the need for convenience. However, in daily use, portable electrical devices suffer from limited power and insufficient battery life. By installing the docking device 10 disclosed in this embodiment on the electrical device and docking it with the electrical components, the power supply device 20 can be flexibly replenished with power through its assembly with the docking device 10.
[0028] Specifically, the power supply device 20 includes a battery cell 22 for storing electrical energy, which can be a dry cell battery, lithium battery, etc. The power supply device 20 also includes a control board 23, which can be a PCB board. The control board 23 is connected to the battery cell 22 and integrates protection circuits, charging management modules, etc., to output electrical energy stably and safely. When the housing 21 is inserted into the docking channel 11, the first curved electrode plate 12 and the second curved electrode plate 13 are inserted into the docking circular groove 211 and respectively make contact with the first contact plate 231 and the second contact plate 232, thereby realizing the circuit conduction.
[0029] Specifically, unlike traditional wavy electrode sheets, the first contact sheet 231 and the second contact sheet 232 disclosed in this embodiment are both disposed on an arc-shaped surface, which is beneficial for adapting to the first curved surface electrode sheet 12 and the second curved surface electrode sheet 13 with curvature, thereby improving the stability of the contact. In addition, the first curved surface electrode sheet 12 and the second curved surface electrode sheet 13 both have a certain curvature and are arc-shaped, so their surface area is large, which is beneficial for achieving effective contact with the first contact sheet 231 or the second contact sheet 232, thereby improving the stability of the connection.
[0030] In summary, the advantages of uniformity and stability of the arc-shaped electrode sheets help maintain structural stability during long-term use. During repeated disassembly and assembly, the first curved electrode sheet 12 can maintain effective contact with the first contact sheet 231, and the second curved electrode sheet 13 can maintain effective contact with the second contact sheet 232, avoiding poor contact or current concentration caused by deformation, and improving the stability and safety of the battery pack.
[0031] Specifically, as another embodiment of this application, the curvature of the first curved electrode sheet 12 is the same as the curvature of the sidewall of the docking groove 211, and the first contact piece 231 is attached to the first curved electrode sheet 12; and, the curvature of the second curved electrode sheet 13 can also be set to be the same as the curvature of the arc-shaped docking plate 212, and the second contact piece 232 is attached to the second curved electrode sheet 13.
[0032] When the power supply device 20 is assembled with the docking device 10, the first curved electrode plate 12 is attached to the side wall of the docking groove 211, and the second curved electrode plate 13 is attached to the side wall of the arc-shaped docking plate 212. This not only facilitates effective contact between the first contact plate 231 and the second contact plate 232, but also allows the housing 21 to support the first curved electrode plate 12 and the arc-shaped docking plate 212 to support the second curved electrode plate 13, keeping the shape of the electrode plates unchanged. In this way, deformation can be avoided and poor contact problems can be reduced during repeated disassembly and assembly.
[0033] As shown in Figure 2, in one embodiment of this invention, both the first curved electrode plate 12 and the second curved electrode plate 13 can be configured as annular rings. The first curved electrode plate 12 completely fits the sidewall of the docking groove 211, and the second curved electrode plate 13 completely fits the sidewall of the arc-shaped docking plate 212. In this case, the housing 21 can be screwed into the docking channel 11 at any angle. When the housing 21 is inserted into place, the circuit can be effectively connected and remain stable.
[0034] As shown in Figure 8, in another embodiment of this invention, the first curved electrode sheet 12 is arc-shaped and the second curved electrode sheet 13 is annular. The first curved electrode sheet 12 is located on the periphery of the second curved electrode sheet 13. Therefore, the second curved electrode sheet 13 requires less material and the first curved electrode sheet 12 requires more material. Setting the first curved electrode sheet 12 to be arc-shaped can reduce costs. At the same time, the positioning operation of the arc-shaped structure is easier than that of the annular structure, reducing the assembly difficulty.
[0035] In another embodiment of this invention, both the first curved electrode sheet 12 and the second curved electrode sheet 13 are arc-shaped, which further reduces production costs and installation difficulty.
[0036] In addition, when the first curved electrode plate 12 or the second curved electrode plate 13 is set to an arc shape, the assembly of the housing 21 is limited by angle. In order to reduce the occurrence of the first curved electrode plate 12 being misaligned with the first contact plate 231 or the second curved electrode plate 13 being misaligned with the second contact plate 232 during assembly, the curvature of the first curved electrode plate 12 or the second curved electrode plate 13 can be set to be large, and the central angle can be set to 120-160°.
[0037] As shown in Figures 3, 4, and 5, in another embodiment of this application, a mounting hole 213 is formed at the bottom of the docking groove 211; a data interface 233 is provided on the control board 23, and the data interface 233 is inserted into the mounting hole 213; the mounting hole 213 is located at the center of the docking groove 211; two arc-shaped docking plates 212 are provided, and the two arc-shaped docking plates 212 are symmetrically arranged on both sides of the mounting hole 213.
[0038] The data interface 233 disclosed in this embodiment includes, but is not limited to, a USB interface. An external power supply can be connected through the data interface 233 to charge the battery cell 22. A control terminal can also be connected through the data interface 233 to detect or adjust the protection circuit on the control board 23.
[0039] Specifically, the data interface 233 is adapted to the mounting hole 213 and is located at the center of the mating groove 211, which is relatively concealed and helps reduce wear or collision. In addition, the arc-shaped mating plate 212 is located on the side of the data interface 233, which can act as a shield, further protecting the data interface 233. Two arc-shaped mating plates 212 are provided, symmetrically arranged on both sides of the mounting hole 213, further protecting the data interface 233 from both sides; that is, the data cable can only be successfully connected when inserted directly into the data interface 233. If the insertion angle is off, mating will not occur, thus avoiding accidental operation and improving safety.
[0040] Furthermore, by placing the mounting hole 213 within the mating groove 211, it is not necessary to drill holes in other locations on the housing 21, thus keeping the side wall and the other end of the housing 21 intact. This helps to improve the sealing performance of the housing 21, increase the surface flatness, and enhance its aesthetics.
[0041] As shown in Figure 9, in another embodiment of this application, the data interface 233 can also be located on one end of the housing 21 opposite to the mating groove 211. An opening is made at the other end of the housing 21 to insert the data interface 233, allowing the data interface 233 to be aligned with the mating groove 211. This also enables charging of the battery cell 22 or data transmission. This implementation reduces assembly difficulty.
[0042] As shown in Figures 3, 4, and 5, in another embodiment of this application, an LED lampshade 234 is provided on the data interface 233. The data interface 233 in this embodiment is relatively concealed, so the LED lampshade 234 is nested within it to facilitate observation of the data interface 233's position, making positioning and docking easier. Simultaneously, the light emitted by the LED lampshade 234, through diffuse reflection within the docking groove 211, can also illuminate the positions of the first contact piece 231 and the second contact piece 232, as well as the outline of the arc-shaped docking plate 212 and the docking groove 211, allowing the user to accurately locate the docking angle and precisely assemble the power supply device 20. In other words, by providing the LED lampshade 234, assembly efficiency is improved and ease of use is enhanced.
[0043] As shown in Figures 1, 2, and 3, in another embodiment of this application, a plurality of limiting protrusions 14 are provided on the side wall of the docking channel 11; a plurality of limiting slots 214 are provided on the outer side wall of the housing 21; the limiting protrusions 14 and the limiting slots 214 are assembled to limit the housing 21 along the circumference of the docking channel 11. In this embodiment, the power supply device 20 and the docking device 10 are detachably coupled. The housing 21 is inserted into the docking channel 11, and partial engagement is achieved through the cooperation of the limiting protrusions 14 and the limiting slots 214, thereby maintaining stability in the connected state.
[0044] As shown in Figure 3, the limiting slot 214 includes an insertion section 2141 extending axially along the housing 21 and an extension section 2142 extending circumferentially along the housing 21. One end of the insertion section 2141 is located on the end face of the housing 21, and the other end is connected to the extension section 2142.
[0045] The limiting slot 214 disclosed in this embodiment is L-shaped. During the assembly process, the housing 21 first moves along the axial direction of the docking channel 11, so that the limiting protrusion 14 enters from the port of the insertion section 2141 until the limiting protrusion 14 moves to the end of the insertion section 2141, at the port position of the extension section 2142; the housing 21 then rotates circumferentially along the docking channel 11, so that the limiting protrusion 14 moves into the extension section 2142. Constrained by the side wall of the extension section 2142, the housing 21 can no longer move along the axial direction of the docking channel 11, thus achieving a locking effect; during the circumferential rotation of the housing 21, the first curved electrode plate 12 contacts the first contact plate 231, and the second curved electrode plate 13 contacts the second contact plate 232.
[0046] It is evident that this quick-release structure is simple, easy to operate, and provides a stable connection, which is conducive to repeated use and improves the reliability of the battery pack.
[0047] Specifically, the docking channel 11 disclosed in this embodiment is cylindrical in shape, and the housing 21 is also cylindrical in shape. The two are compatible and can maintain accurate alignment during assembly, further improving assembly accuracy and reducing operational difficulty.
[0048] Specifically, in another embodiment of this invention, a plurality of limiting protrusions 14 are evenly arranged along the circumference of the docking channel 11, and a plurality of limiting slots 214 are evenly arranged along the circumference of the side wall of the housing 21. Therefore, during the assembly process, as long as one limiting protrusion 14 is aligned with one limiting slot 214, the other limiting protrusions 14 and limiting slots 214 are also aligned, so as to reduce the assembly difficulty.
[0049] Specifically, as another embodiment of this application, it is disclosed that the depth of the insertion segment 2141 of each of the limiting slots 214 is not equal. The limiting slots 214 disclosed in this embodiment are arranged around the side wall of the housing 21. By setting the depth of each insertion segment 2141 to be different, it can play a foolproof role, so that the housing 21 can be inserted into the docking channel 11 at a specific angle to complete the assembly. The positions of the first contact piece 231 and the second contact piece 232 are set accordingly, so that when the housing 21 is accurately assembled, the first curved electrode piece 12 contacts the first contact piece 231 and the second curved electrode piece 13 contacts the second contact piece 232.
[0050] As shown in Figure 4, in another embodiment of this application, the first contact piece 231 and the second contact piece 232 are arranged along the diameter direction of the mating groove 211. In this embodiment, the first contact piece 231 and the second contact piece 232 are arranged in a straight line and can be respectively positioned on both sides of the center point of the mating groove 211 to increase the distance between them. Furthermore, the first curved electrode piece 12 and the second curved electrode piece 13 are also positioned opposite each other on both sides of the center point of the mating channel 11, so that they can avoid each other and prevent interference.
[0051] Specifically, as another embodiment of this application, the first contact piece 231 is disclosed as a positive conductive piece, and the second contact piece 232 is a negative conductive piece; or, the second contact piece 232 is a positive conductive piece, and the first contact piece 231 is a negative conductive piece. In this embodiment, the first contact piece 231 and the second contact piece 232 are used to conduct the circuit, one being a positive conductive piece and the other a negative conductive piece, to achieve a stable circuit connection.
[0052] As shown in Figures 6 and 7, in another embodiment of this application, the docking device 10 is disclosed to further include a third curved surface electrode 15, which is disposed at the center of the docking channel 11; the control plate 23 is also provided with a third contact piece 235, the end of which extends to the center of the docking groove 211, and the third contact piece 235 is used to contact and conduct the third curved surface electrode 15.
[0053] In addition to its power supply function, the battery pack disclosed in this embodiment can also transmit data to quickly understand key data such as remaining power and charging speed, thereby optimizing the user experience. A third contact piece 235 and a third curved electrode piece 15 are provided to enhance signal transmission capabilities.
[0054] Specifically, the third contact piece 235 can be a cylindrical PIN pin, and the third curved electrode piece 15 can be set in an arc shape to fit the PIN pin. Therefore, the first curved electrode piece 12, the second curved electrode piece 13, and the third curved electrode piece 15 are nested sequentially and concentrically arranged within the docking channel 11, independent of each other and without interference; the first contact piece 231, the second contact piece 232, and the third contact piece 235 are also independent of each other and do not interfere with each other, which can avoid accidental contact during docking and improve the safety of use.
[0055] As shown in Figures 8 and 9, in another embodiment of this application, the second curved electrode sheet 13 is annular and disposed at the center of the docking channel 11; the docking device 10 further includes a fourth curved electrode sheet 16, which is symmetrically disposed on both sides of the second curved electrode sheet 13 with the first curved electrode sheet 12; the control plate 23 is also provided with a fourth contact piece 236, the end of which extends to the side wall of the docking groove 211, and the fourth contact piece 236 is symmetrically disposed on both sides of the docking groove 211 with the first contact piece 231; the fourth contact piece 236 is used to contact and conduct the fourth curved electrode sheet 16.
[0056] The fourth contact piece 236 disclosed in this embodiment can also be configured as a connection terminal for signal transmission. The fourth curved electrode piece 16 is connected to the fourth contact piece 236, further increasing the number of contact points between the docking device 10 and the power supply device 20. The fourth contact piece 236 and the first contact piece 231 are symmetrically arranged to separate the two conductive structures and avoid mutual interference.
[0057] In summary, the docking groove 211 disclosed in the embodiments of this application is provided with at least a first contact piece 231 and a second contact piece 232 to realize the charging function; a third contact piece 235 or a fourth contact piece 236 can also be selectively provided to increase the data transmission function. The product structure can be flexibly designed according to the actual usage requirements of the product. When three or four contact pieces are provided in the docking groove 211, two of the contact pieces are respectively a positive conductive piece and a negative conductive piece, used to conduct the charging circuit, and the other one or two contact pieces are used for data transmission.
[0058] In summary, this application discloses a battery pack, including a docking device 10 and a power supply device 20. The docking device 10 has a docking channel 11 formed thereon, and a first curved electrode plate 12 and a second curved electrode plate 13 are concentrically disposed at the end of the docking channel 11. The power supply device 20 includes a housing 21, a battery cell 22, and a control board 23. The housing 21 is at least partially inserted into the docking channel 11. A docking groove 211 is formed at the end of the housing 21 for inserting the first curved electrode plate 12 and the second curved electrode plate 13. The core 22 is disposed within the housing 21; the control board 23 is disposed within the housing 21 and connected to the core 22; an arc-shaped docking plate 212 extending circumferentially is disposed within the docking groove 211; a first contact piece 231 and a second contact piece 232 are disposed on the control board 23, the end of the first contact piece 231 extends to the side wall of the docking groove 211 for contacting and conducting the first curved electrode piece 12; the end of the second contact piece 232 extends to the side wall of the arc-shaped docking plate 212 for contacting and conducting the second curved electrode piece 13.
[0059] The power supply device 20 disclosed in this embodiment includes a battery cell 22 for storing electrical energy. When the housing 21 is inserted into the docking channel 11, the first curved electrode plate 12 and the second curved electrode plate 13 are inserted into the docking circular groove 211 and respectively make contact with the first contact plate 231 and the second contact plate 232, thereby realizing the circuit conduction. Utilizing the advantages of uniformity and stability of the arc-shaped electrode plates, it is beneficial to maintain structural stability during long-term use. During repeated disassembly and assembly, the first curved electrode plate 12 can maintain effective contact with the first contact plate 231, and the second curved electrode plate 13 can maintain effective contact with the second contact plate 232, avoiding poor contact or current concentration caused by deformation, and improving the stability and safety of the battery pack.
[0060] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.
[0061] It should be noted that this invention uses a battery pack as an example to introduce the specific structure and working principle of the invention, but the application of the invention is not limited to battery packs, and can also be applied to the production and use of other similar workpieces.
[0062] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.
[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A battery pack, characterized in that, The device includes a docking device and a power supply device. The docking device has a docking channel, and a first curved electrode plate and a second curved electrode plate are concentrically arranged at the end of the docking channel. The power supply device includes: a housing, at least partially inserted into the docking channel; a docking groove is formed at the end of the housing for inserting the first curved electrode plate and the second curved electrode plate; a battery cell disposed within the housing; and a control board disposed within the housing and connected to the battery cell. An arc-shaped docking plate extending circumferentially is disposed within the docking groove. The control board has a first contact piece and a second contact piece. The end of the first contact piece extends to the side wall of the docking groove for contacting and conducting the first curved electrode plate. The end of the second contact piece extends to the side wall of the arc-shaped docking plate for contacting and conducting the second curved electrode plate.
2. The battery pack according to claim 1, characterized in that, The curvature of the first curved electrode sheet is the same as the curvature of the sidewall of the mating groove, and the first contact piece is attached to the first curved electrode sheet; and / or, the curvature of the second curved electrode sheet is the same as the curvature of the arc-shaped mating plate, and the second contact piece is attached to the second curved electrode sheet.
3. The battery pack according to claim 1, characterized in that, The bottom of the docking groove has a mounting hole; the control board is provided with a data interface, which is plugged into the mounting hole; wherein, the mounting hole is located at the center of the docking groove; two arc-shaped docking plates are provided, and the two arc-shaped docking plates are symmetrically arranged on both sides of the mounting hole.
4. The battery pack according to claim 3, characterized in that, The data interface is covered with an LED lampshade.
5. The battery pack according to claim 1, characterized in that, The sidewall of the docking channel is provided with a plurality of limiting protrusions; the outer sidewall of the housing is provided with a plurality of limiting slots; the limiting protrusions are assembled with the limiting slots; wherein, the limiting slot includes an insertion section extending axially along the housing and an extension section extending circumferentially along the housing, one end of the insertion section is located on the end face of the housing, and the other end is connected to the extension section.
6. The battery pack according to claim 5, characterized in that, The depth of the insertion segment in each of the aforementioned limiting slots is not equal.
7. The battery pack according to claim 1, characterized in that, The first contact piece and the second contact piece are arranged along the diameter direction of the mating groove.
8. The battery pack according to any one of claims 1 to 7, characterized in that, The first contact piece is a positive conductive piece, and the second contact piece is a negative conductive piece; or, the second contact piece is a positive conductive piece, and the first contact piece is a negative conductive piece.
9. The battery pack according to claim 1, characterized in that, The docking device further includes a third curved surface electrode plate, which is located at the center of the docking channel; the control board is also provided with a third contact plate, the end of which extends to the center of the docking groove, and the third contact plate is used to contact and conduct the third curved surface electrode plate.
10. The battery pack according to claim 1, characterized in that, The second curved electrode sheet is annular and disposed at the center of the docking channel; the docking device further includes a fourth curved electrode sheet, which is symmetrically disposed on both sides of the second curved electrode sheet with the first curved electrode sheet; the control board is also provided with a fourth contact piece, the end of which extends to the side wall of the docking groove, and the fourth contact piece is symmetrically disposed on both sides of the docking groove with the first contact piece; wherein, the fourth contact piece is used to contact and conduct the fourth curved electrode sheet.