Movable electrical connections and batteries and battery packs

Abstract

The utility model relates to battery technology field especially relates to a movable electric connecting piece and battery pole battery pack. Movable electric connecting piece includes: integrative conductor structure, the conductor structure includes the first elastic contact portion, the middle connecting portion and the second elastic contact portion that set gradually in its axial direction, the first elastic contact portion and the second elastic contact portion are respectively by the petal piece structure that a plurality of axial extension petal piece constitutes, and the axial clearance has between two petal piece of arbitrary circumferential adjacent respectively, each petal piece surrounds and forms an axial extension center space, and the petal piece structure can be radially elastically deformed under the action of external force, the middle connecting portion is used for with external assembly fixed.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a movable electrical connector, a battery, and a battery pack. Background Technology

[0002] With the widespread adoption of portable electronic devices, lithium-ion batteries are increasingly used. Users have varying voltage and capacity requirements for batteries in different scenarios, often necessitating the purchase of multiple battery specifications, which is costly and inconvenient. Existing batteries are mostly closed-cell structures, limiting user flexibility and hindering usability. Therefore, there is an urgent need in this field for a modular battery solution that allows users to assemble and disassemble batteries independently and quickly. Summary of the Invention

[0003] One of the objectives of this utility model embodiment is to provide a movable electrical connector, a battery, and a battery pack. Applying this technical solution is beneficial to improving the efficiency of battery assembly.

[0004] In a first aspect, an embodiment of the present invention provides a movable electrical connector, comprising: An integrally formed conductor structure, the conductor structure including a first elastic contact portion, a middle connecting portion and a second elastic contact portion arranged sequentially along its axial direction; The first elastic contact portion and the second elastic contact portion are each a petal-shaped structure composed of a plurality of axially extending petals, and there is an axial gap between any two adjacent petals in the circumferential direction. Each of the lobes forms an axially extending central space, and the lobed structure can be radially elastically deformed under the action of external force; The central connecting part is used to fix it to the external components.

[0005] Optionally, the central connecting portion is a conductor sheet perpendicular to the axial direction, and the conductor sheet is provided with a positioning structure for fixing to an external component.

[0006] Optionally, the positioning structure includes at least one positioning slot parallel to the axial direction for engaging with a positioning guide rail on an external component.

[0007] Optionally, the number of positioning slots is two, arranged in parallel on two opposite sides of the conductor sheet.

[0008] Optionally, the profile of the cross section of each positioning slot perpendicular to the slot direction includes at least three sequentially connected corners, the corners being less than 180 degrees and greater than 0 degrees.

[0009] Optionally, each of the aforementioned angles is a right angle.

[0010] Optionally, each of the cross sections has a meander-shaped profile.

[0011] Optionally, the two positioning slots are mirror-symmetrical.

[0012] Optionally, the outer contour of the conductor sheet is wider than the outer contour of the widest part of the first elastic contact portion and the second elastic contact portion.

[0013] Optionally, each of the lobes is evenly distributed circumferentially along the lobed structure, such that the lobed structure is centrally symmetrical with respect to the axis of the central space.

[0014] Optionally, the petal-like structure consists of four petals.

[0015] Optionally, the first elastic contact portion and the second elastic contact portion are mirror-symmetrical with respect to the middle connecting portion.

[0016] Secondly, the battery provided in this utility model embodiment is characterized in that a movable electrical connector as described above is provided inside the battery casing, the movable electrical connector is electrically connected to the electrodes of the battery cell assembly, and an interface is provided on the casing for the movable electrical connector to extend out.

[0017] Thirdly, the present invention provides a battery pack comprising at least two of the above-mentioned batteries, each battery being placed side by side and close together, and each battery being electrically connected to the other adjacent battery via a movable electrical connector extending out of its housing.

[0018] As can be seen from the above, using the technical solution of this embodiment, the first elastic contact portion and the second elastic contact portion of the electrical connector are conductor components that can undergo elastic deformation during axial insertion to achieve electrical connection. The middle connecting portion is used to fix with the external component, so that the electrical connector can be moved under the drive of the external component to achieve bidirectional electrical connection. When applied to batteries, it is beneficial to facilitate the assembly efficiency between batteries and improve the convenience of battery assembly. Attached Figure Description

[0019] The accompanying drawings, which are provided to further illustrate the present invention and form part of this application, do not constitute an undue limitation of the present invention.

[0020] Figure 1 A three-dimensional perspective structural diagram of the electrical connector provided in Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the main structure of the electrical connector provided in Embodiment 1 of this utility model; Figure 3 This is a side view of the electrical connector provided in Embodiment 1 of the present utility model. Figure 4A three-dimensional perspective structural diagram of the busbar provided in Embodiment 2 of this utility model; Figure 5 This is a schematic diagram of the main structure of the busbar provided in Embodiment 2 of this utility model; Figure 6 This is a top view of the busbar structure provided in Embodiment 2 of this utility model; Figure 7 A three-dimensional perspective structural diagram of the movable cover plate provided in Embodiment 3 of this utility model; Figure 8 This is a schematic diagram of the main structure of the movable cover plate provided in Embodiment 3 of this utility model; Figure 9 A bottom view of the movable cover plate provided in Embodiment 3 of this utility model; Figure 10 A three-dimensional structural schematic diagram of the battery casing provided in Embodiment 4 of this utility model; Figure 11 This is a schematic diagram of the battery's exploded structure provided in Embodiment 5 of this utility model; Figure 12 This is a schematic diagram of the structure of a single battery cell provided in Embodiment 5 of this utility model; Figure 13 This is a schematic diagram of the battery cell assembly structure provided in Embodiment 5 of this utility model; Figure 14 This is a structural schematic diagram of the assembly busbar provided in Embodiment 5 of this utility model; Figure 15 This is a structural schematic diagram of the assembly electrical connector provided in Embodiment 5 of this utility model; Figure 16 This is a structural schematic diagram of the assembled movable cover plate and upper shell provided in Embodiment 5 of this utility model; Figure 17 This is a schematic diagram of the battery module structure after assembling the lower shell, provided in Embodiment 5 of this utility model; Figure 18 , 19 This is a schematic diagram of the self-assembly battery pack provided in Embodiment Six of this utility model.

[0021] Figure label: 1: Electrical connector; 11: First elastic contact; 12: Second elastic contact; 13: Middle connecting part (conductive piece); 14: Lobe; 15: Gap; 16: Central space; 17: Positioning slot; 2: Busbar; 21: Insulating substrate; 22: Conductive plate; 23: First conductive tube; 24: Second conductive tube; 25: Guide platform; 26: Positioning guide rail; 27: Slotting; 3: Battery cell; 31: Electrode tab; 4: Movable cover plate; 41: Sliding strip; 42: Slot; 43: Extending arm; 44: Rib; 5: Shell; 51: Upper shell; 52: Lower shell; 53: Slide groove; 531: Recess; 532: Groove on the shell surface; 54: Limiting groove; 6: Battery module; 7: Battery cell assembly. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0023] Examples of embodiments of the present invention are shown in the accompanying drawings in a detailed description below, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0024] The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. In the description of the present invention, it should be understood that terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings and are only for the convenience of describing the present invention 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 limiting the present invention.

[0025] Furthermore, the terms "" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Example 1: Electrical connector 1.

[0028] See Figures 1-3 As shown.

[0029] In this embodiment, the electrical connector 1 is an integrally formed conductor structure, which includes a first elastic contact portion 11, a middle connecting portion 13, and a second elastic contact portion 12 arranged sequentially along its axial direction.

[0030] The first elastic contact portion 11 and the second elastic contact portion 12 are conductor components that can undergo elastic deformation during axial insertion to achieve electrical connection. The middle connecting portion 13 is used to fix with the external component so that the electrical connector 1 can be moved under the drive of the external component to achieve bidirectional electrical connection. When applied to batteries, this facilitates the assembly efficiency between batteries and improves the convenience of battery assembly.

[0031] As an illustration of this embodiment, the first elastic contact portion 11 and the second elastic contact portion 12 are both petal-shaped structures. Each petal-shaped structure is composed of a plurality of axially extending petals 14. Any two circumferentially adjacent petals 14 have an axial gap 15 between them. Each gap 15 is an open opening at the end of the petal-shaped structure. All petals 14 enclose an axially extending central space 16, which is also an open opening at the end of the petal-shaped structure. This structure allows the petal-shaped structure to undergo radial elastic deformation under external force.

[0032] Specifically, when the first elastic contact portion 11 or the second elastic contact portion 12 is inserted into the socket of the external socket female as a male connector, under the squeezing action of the inner wall of the socket, each petal 14 undergoes elastic deformation and moves towards the central space 16. The petal-shaped structure is in a radial elastic contraction state and fits tightly with the socket female under its own elastic force, thus achieving a stable and reliable conductive connection.

[0033] Conversely, when the first elastic contact portion 11 or the second elastic contact portion 12 serves as the female connector, the external male connector is inserted into the central space 16. Under the action of the outer wall of the male connector pressing against the inner surface of each petal 14 facing the central space 16, each petal 14 undergoes elastic deformation outward, and the petal-shaped structure is in a radially elastic expansion state. Under its own elastic force, it fits tightly with the inserted male connector, thus achieving a stable and reliable conductive connection.

[0034] As a further illustration of this embodiment, the central connecting portion 13 is designed as a conductor sheet perpendicular to the axial direction of the first elastic contact portion 11 and the second elastic contact portion 12, such that the conductor sheet stands between the first elastic contact portion 11 and the second elastic contact portion 12. A positioning structure (such as a positioning slot 17) is provided on the conductor sheet for fixing it to an external component (such as a busbar 2). With this design, after the external component (such as a movable cover plate 4) is fixedly connected to the positioning structure of the conductor sheet via a driving mechanism, it can drive the entire electrical connector 1 to slide axially. Preferably, the conductor sheet is a rectangular conductor sheet, which can be smoothly translated along the guide platform 25 provided below it.

[0035] In this embodiment, the electrical connector 1 employs a petal-shaped structure as an elastic contact part, allowing it to be used as both a male and female component, greatly improving the flexibility and versatility of the connection. During application, the elastic deformation of the petals 14 generates continuous contact pressure, ensuring low impedance and high stability of the electrical connection. Furthermore, the central connecting part 13 adopts a flat conductor sheet structure and is equipped with a positioning structure, facilitating connection with an external driving mechanism (such as the moving cover plate 4 in embodiment three) and achieving precise and stable linear sliding control, providing core action execution functions for the modular connection and disconnection of the battery module 6.

[0036] In a preferred embodiment, the central connecting portion 13 is a conductor sheet, the width of which is greater than the width of the widest part of the first elastic contact portion 11 and the second elastic contact portion 12. When the conductor sheet is mounted on the guide platform 25 (the platform supporting the positioning guide rail 26) of the busbar 2 via its bottom positioning structure (such as the positioning slot 17), the space occupied by the translational trajectory of the conductor sheet is correspondingly greater than the space occupied by the elastic contact portions at both ends. This design ensures that when the electrical connector 1 slides on the busbar 2, its first elastic contact portion 11 and second elastic contact portion 12 always maintain a defined gap 15 with the fixed components (such as the conductive tube or housing 5 structure of the busbar 2) outside the translational trajectory space, thereby effectively avoiding interference during the sliding process and providing a reliable guarantee for the smooth insertion of the elastic contact portion and the external connector. Specifically, when the bottom side of the rectangular conductor sheet is placed on the guide platform 25, the first elastic contact portion 11 and the second elastic contact portion 12 connected to the two surfaces of the conductor sheet are respectively suspended above the guide platform 25, allowing them to freely undergo elastic deformation without obstruction.

[0037] As an illustration of this embodiment, preferably, the first elastic contact portion 11 and the second elastic contact portion 12 are mirror-symmetrical with respect to the rectangular conductor sheet that serves as the central connecting portion 13. This symmetrical design makes the forces on both sides of the conductor sheet more balanced, and when the conductor sheet is moved by the driving mechanism, it significantly improves the force balance and movement stability of the electrical connector 1 as a whole.

[0038] Furthermore, a positioning slot 17 is provided on each of the two parallel opposite sides of the rectangular conductor sheet. The two positioning slots 17 are parallel to each other and arranged in a mirror-symmetrical manner.

[0039] This embodiment also provides a convenient and stable positioning and insertion structure. The cross-section of the positioning slot 17 perpendicular to the slot direction has a profile formed by a continuous line segment bending at least three times, that is, it includes at least three sequentially connected corners, forming a complex profile that can limit positioning in multiple directions. For example, the corner is right-angled, and its cross-section is a meander pattern.

[0040] To further improve the balance during guide sliding, the cross-sections of the two positioning slots 17 are preferably designed as complementary meander patterns, so that the two positioning slots 17 form a parallel mirror symmetrical structure, thereby obtaining better stability during sliding.

[0041] As another illustration of this embodiment, each petal 14 in the petal-like structure is evenly distributed circumferentially, each petal 14 has the same shape, the axial gap 15 between any two adjacent petals 14 is the same, and the distance from each petal 14 to the axis of the central space 16 is the same, so that the petal-like structure is centrally symmetrical with respect to the axis of the central space 16.

[0042] Preferably, the petal-like structure consists of four circumferentially evenly distributed petals 14. These four petals 14 are centrally symmetrically designed, ensuring uniform radial contact force during insertion. The contact force and elastic deformation in all directions remain consistent, effectively preventing unilateral wear or poor contact, ensuring the stability and service life of the electrical connection, and effectively improving the mechanical stability and electrical contact reliability of the connector.

[0043] The mirror-symmetrical design of the first and second elastic contact portions 12 of this electrical connector 1 relative to the central conductor plate effectively ensures balanced force distribution and smoother movement during sliding. The meander-shaped design and mirror-symmetrical layout of the positioning slot 17 provide stable and precise sliding guidance, effectively preventing skewing. The four-lobed, centrally symmetrical structure of the lobes 14 ensures uniform radial force and stable contact resistance during insertion, greatly improving the reliability and durability of the electrical connection.

[0044] Example 2: Busbar 2.

[0045] See Figures 4-5 As shown.

[0046] This embodiment provides an insulating substrate 21, on which a conductive plate 22 is provided, and on the conductive plate 22 are at least one conductive tube (one of which is referred to as the first conductive tube 23) and a guiding mechanism.

[0047] The insulating substrate 21 may be made of glass fiber material, but is not limited to, and the conductive plate 22, the first conductive tube 23, and the first guiding material may be made of copper or other copper alloy materials, but is not limited to, and have good conductivity.

[0048] The first conductive tube 23 and the guiding mechanism can be an integral structure with the conductive plate 22, or they can be a conductor structure that is fixed on the conductive plate 22. The first conductive tube 23, the guiding mechanism and the conductive plate 22 are the same electrode.

[0049] The conductive plate 22 is used to electrically connect with the tab 31 of the battery cell 3, providing an electrical connection path between the battery cell 3 inside the battery and the external circuit. It has a simple structure and good conductivity.

[0050] A guiding mechanism is used to guide the movable electrical connector 1 (as shown in Embodiment 1) to move along a predetermined path on the guiding mechanism. The guiding mechanism in this embodiment includes a guiding platform 25 and a positioning guide rail 26.

[0051] As can be seen from the above, when applied, this busbar is installed at the end of the battery tab that extends outwards, which can easily realize the parallel or series connection between the cells in the cell without welding the wires. The conductive tube is used as its electrode output, which helps to improve the assembly efficiency of the battery module, improve work efficiency, and improve the consistency of the battery module.

[0052] As an illustration of this embodiment, a movable electrical connector can be mounted on the guide mechanism. The movable electrical connector moves along the guide platform under the limiting guidance of the guide mechanism. The guide mechanism provides the optimal guide trajectory and space for the movable electrical connector to move to different positions, realizing the movement of the electrical connector and facilitating the external connection or independent use of the battery.

[0053] In application, the conductive sheet on the slidable movable electrical connector 1 shown in Embodiment 1 is mounted on the guide platform 25 of the guide mechanism. The movable electrical connector 1 moves along the guide platform 25 under the limiting guidance of the positioning guide rail 26. The guide platform 25 provides the optimal guide trajectory and space for the movable electrical connector 1 to move to different positions. The positioning guide rail 26 provides precise guidance for the movement of the movable electrical connector 1 and avoids deviation. The guide mechanism is the key design for realizing the function of the movable electrical connector 1 extending to connect to the external power and retracting to disconnect from the external power.

[0054] As a preferred embodiment, the guide mechanism (including the positioning guide rail 26) and the first conductive tube 23 are arranged in a front-to-back spatial layout, and preferably the axial direction of the guide mechanism is kept coaxial with the axial direction of the first conductive tube 23.

[0055] With this layout design, two stable operating states can be achieved when the movable electrical connector 1 (electrical connector 1) slides on the busbar 2: When the movable electrical connector 1 slides backward, the second elastic contact part 12 at its rear end is tightly inserted into the first conductive tube 23 located behind it. At this time, the entire movable electrical connector 1 is accommodated in the guide mechanism and the internal space of the first conductive tube 23. At this time, the battery is in an independent state and the movable connection end is not exposed.

[0056] When the movable electrical connector 1 slides forward, its first elastic contact portion 11 extends out of the front end of the guide platform 25 and is exposed outside the battery housing 5; at the same time, its second elastic contact portion 12 at the rear end disengages from the first conductive tube 23 at the rear and moves forward to the top surface of the guide platform 25. At this time, the battery is in a connectable state and is ready to establish an electrical connection with the adjacent battery module 6.

[0057] This layout allows for reliable switching between "independent use" and "module expansion" modes of the battery via simple axial sliding, providing intuitive operation and accurate positioning. Furthermore, the coaxial front-to-back layout makes the structure very compact, fully utilizing the limited space at the battery end. In the connected state, the elastic contact part is inserted into the first conductive tube 23, and the elasticity of the flaps 14 ensures a large-area, tight contact, resulting in high conductivity reliability. In the independent state, all live parts are housed inside the casing 5, avoiding the risk of accidental short circuits.

[0058] As an illustration of this embodiment, at least two slots 27 are provided on the insulating substrate 21 for the tabs 31 of each battery cell 3 to extend out. Each slot 27 is located above the tab 31 extension position of each battery cell 3, and the conductive plate 22 is located in the area between the slots 27. The tabs 31 of each battery cell 3 extend from the slots 27 at their top, avoiding bending of the tabs 31 and pulling the battery cell 3 up. Each tab 31 is bent and welded to the top surface of the same conductive plate 22. This design is particularly convenient for current collection, can increase the conductor volume of the electrodes, optimize current distribution, and reduce internal resistance.

[0059] As a further illustration of this embodiment, two conductive tubes are disposed on the conductive plate 22, the other of which is referred to as the second conductive tube 24. The second conductive tube 24 is arranged parallel to the first conductive tube 23 and the guide platform 25. The second conductive tube 24 can be integrally formed with the conductive plate 22, or it can be installed and fixed on the conductive plate 22 as an independent component and maintain the same electrode potential as the conductive plate 22.

[0060] Preferably, the second conductive tube 24, the first conductive tube 23, and the guide platform 25 are symmetrically arranged on the top surface of the busbar 2, located on opposite sides of the top surface. More specifically, one axial end of the second conductive tube 24 is flush with the axial end of the first conductive tube 23 facing away from the guide mechanism, and the other axial end is flush with the axial end of the guide mechanism facing away from the first conductive tube 23. This symmetrical arrangement makes the mass distribution and electrical connection point distribution of the busbar 2 more balanced, improves the overall mechanical stability of the battery module 6, and helps reduce internal stress during vibration or movement. This symmetrical arrangement also provides another parallel and symmetrical electrical contact point for the movable electrical connector 1 (working in conjunction with the first conductive tube 23), forming a two-point contact, which significantly increases the redundancy and reliability of the current path and reduces the risk of failure due to poor single-point contact. Furthermore, the strictly flush design at both ends makes the positioning and installation of the busbar 2 inside the battery housing 5 simpler and more accurate, optimizes the component arrangement in a limited space, and provides the best spatial environment for the smooth sliding of the electrical connector 1. In summary, the symmetrical layout ensures the symmetry of the current path, which helps maintain the consistency of electrical parameters.

[0061] As a preferred embodiment, the guide mechanism is provided with two parallel positioning guide rails 26, which are mirror-symmetrical. This mirror-symmetrical structure helps ensure that the movable electrical connector 1 experiences uniform force on both sides during sliding, avoiding jamming or misalignment caused by uneven force. The dual-rail symmetrical layout provides balanced guiding support for the electrical connector 1, significantly improving the smoothness and accuracy of the sliding process. Furthermore, the mirror-symmetrical guide rail structure complements the corresponding mirror-symmetrical positioning slot 17 on the electrical connector 1, achieving an anti-misinsertion function and ensuring installation only in the correct direction. Moreover, the balanced distribution of guiding force helps maintain uniform contact pressure between the electrical connector 1 and the conductive tube, improving the reliability of the electrical connection.

[0062] Furthermore, this embodiment also provides a preferred positioning track structure, wherein the outline of each positioning guide rail 26 in the cross-section perpendicular to the guiding direction is formed by a continuous line segment through at least three bends, that is, it includes at least three sequentially connected corners, forming a multi-directional defining structure. The corner can be any angle less than 180 degrees, including acute angles, obtuse angles, or right angles. This embodiment uses a right-angled outline as a preferred illustration, for example, but not limited to a meander-shaped outline.

[0063] Preferably, the cross-sections of the two positioning guides 26 perpendicular to the guiding direction are complementary and mirror-symmetrical. This complementary symmetrical fit not only ensures excellent torsional stability but also maximizes the contact area during sliding, further enhancing the accuracy of guidance and the reliability of the connection.

[0064] As can be seen from the above, by designing the cross-section of the positioning guide rail perpendicular to the guiding direction, which includes a complex profile formed by at least three corners, the electrical connector 1 can be effectively limited in multiple directions, greatly improving sliding stability. Furthermore, the complementary mirror-symmetric structure significantly enhances the system's torsional resistance, ensuring that the electrical connector 1 always maintains the correct orientation. Additionally, the right-angled meander profile provides a larger contact area and more precise fit tolerances, making the sliding process smoother and more reliable. Specific asymmetrical or symmetrical complementary profiles achieve an effective anti-misfit function, ensuring that components can only be assembled in the correct orientation.

[0065] Example 3: Moving cover plate 4.

[0066] See Figures 7-9 As shown.

[0067] This embodiment provides a movable cover plate 4, which is made of a metal material (such as chrome steel). The entire outer surface of the movable cover plate 4 is covered with an insulating layer, such as, but not limited to, an insulating coating formed by electrophoresis or electrostatic spraying. In this way, the metal substrate ensures the mechanical strength and durability of the component; the comprehensive surface insulation treatment effectively prevents short circuits when the operator accidentally touches it or when it comes into contact with other battery components, laying the foundation for safe use.

[0068] The bottom surface of the movable cover plate 4 is also provided with a slide bar 41 of a certain height. Preferably, the slide bar 41 is straight, and the height of the slide bar 41 matches the depth of the groove on the housing 5 (generally the thickness of the housing 5), so that the slide bar 41 at the bottom of the movable cover plate 4 can be confined within the groove of the housing 5, while the panel of the movable cover plate 4 is located outside the housing surface of the housing 5. The design of the slide bar 41 ensures that the movable cover plate 4 can only slide in a straight line strictly along the extension direction of the slide bar 41, preventing sliding deflection or jamming, and providing stable guidance for the precise sliding of the electrical connector 1.

[0069] The bottom end of the slide bar 41 of the movable cover plate 4 is also provided with a fixing part that matches the middle connecting part 13 of the movable electrical connector 1, so as to fix it to the middle connecting part 13 of the movable electrical connector 1 located in the housing 5, thereby driving the movable electrical connector 1 to slide in the housing 5, so that the external operation can be accurately transmitted to the internal movable electrical connector 1, and realize the switching of battery connection state.

[0070] As a preferred embodiment of the fixing part, two parallel extension arms 43 are provided on one side of the bottom end of the slide bar 41 of the movable cover plate 4. The extension direction of the two extension arms 43 is perpendicular to the extension direction of the slide bar 41. The gap between the two extension arms 43 forms a slot 42. During assembly, the middle connecting part 13 of the movable electrical connector 1 is locked in the slot 42.

[0071] Since the extension direction of the slot 42 is perpendicular to the extension direction of the slide bar 41, that is, perpendicular to the sliding direction, no matter how the movable cover plate 4 slides along the slide groove 53, the movable electrical connector 1 is firmly restricted in the slot 42, which fundamentally avoids the risk of the movable electrical connector 1 coming off during the sliding process and ensures the reliability of power transmission.

[0072] Furthermore, in this embodiment, an extension arm 43 perpendicular to the extending direction of the slide bar 41 is provided on one side of the bottom of the slide bar 41 to form a slot 42. When assembled onto the housing 5, the two extension arms 43 are located inside the housing 5. The length of the extension arms 43 is much wider than the slide groove 53 on the housing 5, which can form a physical interference constraint with the internal structure of the housing 5, effectively preventing the movable cover plate 4 from accidentally coming off the slide groove 53 of the housing 5 during sliding, thus improving the reliability and safety of operation. In addition, the extension arm 43 structure located inside the housing 5 increases the contact and constraint points between the movable cover plate 4 and the housing 5, further enhancing the anti-displacement ability of the movable cover plate 4 during sliding, and ensuring the straightness and stability of the sliding trajectory.

[0073] As a further optimization of this embodiment, referring to the accompanying drawings, a rib 44 is provided on each of the two opposite outer sides of the movable cover plate 4 and the slide bar 41 in the same direction. The two ribs 44 are the two opposite outermost sides of the movable cover plate 4, extending parallel to the slide bar 41, and the top height of the ribs 44 is lower than the shell surface of the movable cover plate 4.

[0074] When the movable cover plate 4 is installed on the housing 5: The sliding strip 41 of the movable cover plate 4 is limited to the groove on the shell surface of the housing 5; The shell surface of the movable cover plate 4 is limited to the recess 531 on the shell surface of the shell 5; Laterally recessed limiting grooves 54 are provided on both sides of the recess 531.

[0075] The ribs 44 on both sides of the movable cover plate 4 extend into the corresponding limiting grooves 54 of the housing 5, without protruding from the housing surface.

[0076] As can be seen from the above, because the rib 44 is embedded in the limiting groove 54, it can effectively limit the lateral displacement of the moving cover (perpendicular to the sliding direction), prevent jamming or displacement caused by lateral force, and ensure the straightness of the sliding trajectory. Moreover, the rib 44 and the slider 41 form a double anti-dislodgement mechanism, which enhances the ability of the moving cover to remain stable under harsh conditions such as vibration and impact. Furthermore, the rib 44 does not protrude from the shell surface, which can maintain the overall flatness of the battery shell, making it both aesthetically pleasing and preventing accidental snagging, thus improving the product's texture.

[0077] Example 4, battery casing 5.

[0078] See Figure 10 As shown.

[0079] This embodiment provides a housing 5 for the design of a battery module 6. The battery housing 5 is used to accommodate core battery components such as battery cells 3, busbars 2, and electrical connectors 1.

[0080] At least one groove 53 is provided on the outer surface of the housing 5. The groove 53 provides a predetermined sliding path for the drive mechanism (such as the movable cover plate 4 in embodiment 3). The bottom of the groove 53 is provided with an opening that communicates with the internal space of the housing 5, so that the drive mechanism provided on the groove 53 can be linked with the movable electrical connector 1 inside the housing 5 to realize the switching of battery state.

[0081] As an illustration of this embodiment, at least one axial end of the slide groove 53 is an open end, so that the movable cover plate 4 can slide into and out of the current slide groove 53 (for example, slide into the slide groove 53 on another battery housing 5 or slide between the slide grooves 53 of the two battery housings 5, which facilitates the autonomous splicing between batteries).

[0082] As can be seen from the above, the battery casing of this embodiment, through the design of the bottom opening of the sliding groove connecting to the internal space, achieves the function of driving precise internal movements with simple external operation. Users only need to slide the drive mechanism outside the casing to precisely control the extension and retraction of the electrical connectors inside the casing. This embodiment transforms complex internal electrical connection operations into intuitive linear sliding operations, allowing users to assemble and disassemble the battery pack without any tools or professional skills, greatly reducing the barrier to entry and improving operational efficiency and user experience. Furthermore, the sliding groove provides stable and precise guidance for the drive mechanism, ensuring the coaxiality and consistency of the electrical connector insertion process and avoiding the risk of poor contact or arcing due to misalignment. At the same time, this controlled connection method is more reliable than manually plugging and unplugging external cables.

[0083] Furthermore, the battery casing has a regular design, which facilitates mold making and production. The linkage between the drive mechanism and the electrical connectors is clear, which also facilitates later inspection and maintenance.

[0084] In summary, this battery casing is no longer just a simple container, but an intelligent structural platform integrating multiple functions such as guidance, transmission, and connection control. It successfully translates user intentions into precise internal mechanical actions, providing a crucial hardware foundation for the evolution of battery technology from "fixed products" to "configurable systems."

[0085] As an illustration of this embodiment, at least one open end of each groove 53 extends to the edge of the corresponding side of the housing 5, so that when two battery housings 5 ​​are docked side by side, the corresponding grooves 53 can be aligned to form a continuous sliding track.

[0086] In this way, by forming a continuous track through the aligned slide grooves 53, users can continuously slide the drive mechanism on multiple battery modules 6 without having to operate the moving cover 4 on each battery separately, which greatly simplifies the assembly process, improves the convenience and efficiency of use, and realizes the autonomous assembly of battery modules 6.

[0087] As an illustration of this embodiment, the cross-section of the groove 53 is in a specific shape such as a dovetail, T-shape, or groove. The cross-section of the groove 53 can form a complementary fit with the slide bar 41 on the movable cover plate 4, which improves the anti-disengagement ability, improves the guiding accuracy, and ensures the stability and reliability of the sliding process.

[0088] As an illustration of this embodiment, referring to the figure, the cross-section of the groove 53 in this embodiment is T-shaped, including a recess 531 located on the shell surface and a shell surface groove 532 penetrating the shell surface.

[0089] The panel of the movable cover 4 is confined within the recess 531, effectively limiting its vertical displacement and preventing it from detaching from the slide groove 53, thus achieving precise positioning and preventing detachment. The slide bar 41 at the bottom of the movable cover 4 extends into the housing 5 through the slot 532 on the housing surface, engaging with the internal structure to ensure the straightness and stability of the sliding process. Furthermore, the recess 531 design allows the panel of the movable cover 4 to form a smooth or near-smooth transition with the outer surface of the housing 5, improving the overall appearance of the product and facilitating user operation.

[0090] The recesses 531 are symmetrical about the central axis relative to the slots 532 on the shell surface, meaning that the widths of the recesses 531 on both sides of the slots 532 are the same. This symmetrical design of the recesses 531 ensures that the sliding cover 4 is subjected to uniform force on both sides during the sliding process, avoiding jamming or tilting caused by uneven force, and making the sliding more stable and smooth.

[0091] In this way, the panel of the movable cover plate 4 is symmetrically confined within the recess 531, providing a balanced constraint force and effectively limiting the vertical displacement of the movable cover plate 4, preventing it from detaching from the slide groove 53. The slide bar 41 at the bottom of the movable cover plate 4 extends into the interior of the housing 5 through the central shell surface slot 532, and the symmetrical support structure ensures the straightness and stability of the sliding process. The symmetrical recess design 531 makes the product appearance more harmonious and aesthetically pleasing, while also facilitating mold design and production assembly, improving product consistency and quality stability.

[0092] As an illustration of this embodiment, the housing 5 is made of insulating material, or its entire surface is covered with an insulating layer. This design effectively prevents possible accidental electrical short circuits and improves the safety of battery use. Especially when multiple batteries are connected side by side, the insulation treatment avoids the formation of unnecessary conductive paths between adjacent battery housings 5.

[0093] As an illustration of this embodiment, the housing 5 is composed of an upper housing 51 and a lower housing 52 with their openings facing each other. The sliding groove 53 can be configured in any of the following ways: The complete slide groove 53 is provided on one of the upper shell 51 or the lower shell 52; Alternatively, it may be formed by combining a first groove 53 segment formed on the upper shell 51 and a second groove 53 segment formed on the lower shell 52 when the upper and lower shells 52 are joined together.

[0094] As can be seen from the above, the split shell design 5 greatly simplifies the manufacturing process and the assembly process of internal components. The slide 53 can be integrally formed on one side of the shell, or it can be formed by combining the upper and lower shells 52. This provides flexibility for the manufacturing process while ensuring molding accuracy and structural strength.

[0095] As a further optimization of this embodiment, referring to the accompanying drawings, on both sides of the sliding groove recess 531 of the housing 5, there are laterally recessed limiting grooves 54 respectively.

[0096] When the movable cover plate 4 is installed on the housing 5: The sliding strip 41 of the movable cover plate 4 is limited to the slot on the shell surface of the housing 5; The shell surface of the movable cover plate 4 is confined within the recess 531 on the shell surface of the shell 5.

[0097] The ribs 44 on both sides of the movable cover plate 4 are precisely embedded in the corresponding limiting grooves 54 of the shell 5, without protruding from the shell surface.

[0098] As can be seen from the above, the limiting groove 54 provides a precise lateral guiding path for the ribs 44 of the movable cover, ensuring that the movable cover maintains a straight line during sliding and preventing lateral displacement. The tight fit between the ribs 44 and the limiting groove 54 effectively suppresses the lateral swaying of the movable cover under vibration, improves the mechanical stability of the entire battery module, and ensures that the movable cover can only be installed in the correct direction, thus preventing misinstallation. Furthermore, the ribs 44 are completely contained within the limiting groove 54 and do not protrude from the shell surface, maintaining the overall aesthetics and flatness of the battery shell.

[0099] Example 5: Battery.

[0100] See Figures 11-17 As shown.

[0101] This invention provides a battery. The battery includes a casing 5, a cell 3, a fixed electrical connector 1, a movable electrical connector 1, and a drive mechanism.

[0102] One or more battery cells 3 are housed within a housing 5. A fixed electrical connector 1 is disposed on the housing 5 and electrically connected to the battery cells 3; a movable electrical connector 1 is electrically connected to the battery cells 3 and can be moved relative to the housing 5 in a controlled manner; a drive mechanism is movably disposed on the housing 5 and is drivenly connected to the movable electrical connector 1.

[0103] The battery employing this structure uses a drive mechanism to control the extension and retraction of the movable electrical connector 1. When the connector 1 is retracted, the battery is in an "independent use" state. When the connector 1 is extended, the battery is in a "modular expansion" state, allowing it to be connected to one or more other batteries to form a larger battery pack. This provides users with a flexible power configuration solution to meet voltage and capacity requirements in different scenarios.

[0104] As an illustration of this embodiment, the fixed electrical connector 1 can be implemented using, but is not limited to, the busbar 2 shown in Embodiment 2. The movable electrical connector 1 can be implemented using, but is not limited to, the electrical connector 1 shown in Embodiment 1. The movable electrical connector 1 slides by cooperating with the guide mechanism on the busbar 2 through its positioning structure.

[0105] The use of the busbar 2 and movable electrical connector 1 designed in Embodiment 2 ensures the reliability and stability of the electrical connection. The cooperation between the positioning structure and the guiding mechanism provides precise guidance for the movable connection, ensuring that it will not deviate during sliding, thus improving the accuracy and lifespan of the connection.

[0106] As an illustration of this embodiment, the positioning slots 17 on both sides of the conductor sheet of the movable electrical connector 1 used in this embodiment are designed such that, within a cross-section perpendicular to the guiding direction, their outline is formed by a continuous line segment bent at least three times, i.e., including at least three sequentially connected corners, such as, but not limited to, three sequentially connected right angles, forming a meander-like outline. The positioning slots 17 of the guiding structure on the electrical connector 1 and the positioning guide rails 26 on the busbar 2 have complementary cross-sections perpendicular to the guiding direction, allowing them to fit together in a nested manner, thereby constituting a limiting function in multiple directions. The shape of this positioning structure and the positioning guide rails 26, as well as the complementary fit between them, greatly improves the torsional stability of sliding, improves guiding accuracy, ensures that the movable electrical connector 1 maintains the correct direction and position during sliding, and greatly enhances the contact area, improving the reliability of the connection.

[0107] As an illustration of this embodiment, the battery in this embodiment uses the movable cover plate 4 shown in Embodiment 3 as the driving mechanism. The bottom surface of the movable cover plate 4 is provided with a fixing part that is fixedly connected to the movable electrical connector 1 and a slide bar 41 that cooperates with the sliding groove of the housing 5. The fixing part is a slot 42, the extension direction of which is perpendicular to the sliding direction of the movable cover plate 4. This slot 42, which is perpendicular to the sliding direction, fundamentally prevents the movable electrical connector 1 from disengaging from the driving mechanism during the sliding process, ensuring the absolute reliability of power transmission. Furthermore, the movable cover plate 4 serves as an external operation interface, providing an intuitive and convenient operation method.

[0108] The movable cover 4 in this embodiment is made of metal and its surface is fully covered with an insulating layer. It has high mechanical strength, and the full insulation treatment effectively prevents accidental contact or short circuit risks, ensuring the safety of user operation.

[0109] This embodiment illustrates a battery comprising two cells 3, with tabs 31 located at both ends of each cell 3. These cells are connected in parallel or series via fixed electrical connectors 1 located at both ends of the battery. The battery casing 5 has fixed electrical connectors 1, movable electrical connectors 1, and a drive mechanism at both ends, arranged in a mirror-symmetrical manner. This design, with its mirror-symmetrical interface layout at both ends, allows the battery to be connected to other battery modules 6 from either end, greatly improving assembly flexibility and convenience, and achieving a truly bidirectional, scalable, modular design.

[0110] As an illustration of this embodiment, the body includes a separable and dockable upper shell 51 and lower shell 52. The split shell 5 design greatly simplifies the production process and the assembly process of internal components, and improves production efficiency and product quality consistency.

[0111] Depend on Figures 11-17 Therefore, the preparation method of this battery is as follows: Cell 3 Pre-treatment: See Figure 12 , 13 As shown, two battery cells 3 are connected in parallel, so that the tabs 31 of each battery cell 3 are led out from the two opposite ends of the battery cell 3.

[0112] Busbar 2 installation: See Figure 14 As shown, busbars 2 are installed at both ends of the battery cell assembly 7, and tabs 31 extend through slots 27 on the busbars 2 and are welded and fixed to conductive plates 22.

[0113] Electrical connector 1 assembly: See Figure 15 As shown, the electrical connector 1 is nested with the positioning guide rail 26 on the busbar 2 through its positioning slot 17, so that the electrical connector 1 can slide along the guide rail, and the elastic contact part at one end faces the conductive tube on the busbar 2.

[0114] Installation of movable cover 4 and upper shell 51: See Figure 16 As shown, the slot 42 on the bottom surface of the movable cover plate 4 is fixed to the middle conductor piece of the electrical connector 1, and the slider of the movable cover plate 4 is placed into the corresponding slot of the upper shell 51.

[0115] 52-pin lower case package: See Figure 17 As shown, the upper shell 51 and the lower shell 52 are aligned and joined together, and fixed with fasteners (such as screws) to form a complete battery module 6.

[0116] After assembly, the panel of the movable cover 4 is exposed outside the housing 5. By sliding the movable cover 4, the electrical connector 1 can be moved on the guide rail of the busbar 2, achieving the following two working states switching: Retracted state: Electrical connector 1 is fully retracted into housing 5, and the battery can be used as an independent unit. Extended state: One end of the electrical connector 1 extends out of the housing 5 and can be plugged into the fixed electrical connector 1 of another identical battery module 6 to realize the electrical connection between batteries.

[0117] Example 6: Autonomous assembly of battery packs.

[0118] See Figure 18 , 19 As shown.

[0119] This embodiment provides an autonomous battery pack assembly system based on the aforementioned battery module 6. Flexible configuration is achieved through the following operations, and the assembly method is as follows: Module alignment: Place two or more battery modules 6 side by side so that the sliding grooves 53 on each module housing 5 are precisely aligned to form a continuous sliding track.

[0120] Connection operation: Slide the movable cover 4 on any battery module 6 to move the movable electrical connector 1 inside it toward the adjacent battery module 6.

[0121] Electrical connection establishment: When the movable electrical connector 1 moves to the extended state, the elastic contact part at one end extends out of its own housing 5 and inserts into the conductive tube on the busbar 2 of the adjacent battery module 6; at the same time, the elastic contact part at the other end of the movable electrical connector 1 maintains or disconnects from the conductive tube of its own battery module 6.

[0122] Multi-module expansion: By repeating the above operation, multiple battery modules 6 can be connected continuously to form a battery pack with a larger capacity.

[0123] Parallel connection: When the cells 3 inside each battery module 6 are connected in parallel, the voltage of the spliced ​​battery pack remains unchanged, and the capacity is added together.

[0124] Assuming a series connection: when the cells 3 inside each battery module 6 are connected in series, the voltage of the spliced ​​battery pack is superimposed, and the capacity remains unchanged.

[0125] The following comparison between experimental examples and control examples illustrates the effectiveness of the self-assembled and disassembled battery module 6 provided by the present invention in terms of connection convenience, connection reliability, structural stability, and user experience.

[0126] Example group: 62 self-assembled and detachable battery modules prepared according to Example 5 of this utility model; Comparative example group: One conventional fixed battery pack is used (its internal structure is equivalent to a single module in the example group, but it is a closed shell with no moving connection mechanism).

[0127] In the comparative example, the internal cells 3, capacity, voltage, and other electrical parameters of the battery are exactly the same as those of the single battery module 6 of this utility model. The difference is that the casing of the comparative example is completely sealed, and two such battery packs need to be manually connected to a dedicated connector (similar to a common laptop power adapter connector) via external wires.

[0128] The test items and results are shown in the table below: 1. Convenience of module connection Measure the time (in seconds) required to connect two independent units into a group. Perform the operation three times and take the average value. 45 ± 5 seconds (Find and bring the connecting cable, align it with the socket, insert it and ensure it is locked) 5 ± 1 seconds (simply bring the two modules together and slide the cover). This invention simplifies the connection process by nearly 90%, enabling "one-click" rapid expansion and greatly improving convenience. 2. Connector contact resistance After the vibration test (conditions: 10Hz-5Hz, frequency sweep cycle, duration 30 minutes), the contact resistance of the connection point was measured (unit: mΩ). 2.5 ± 0.8 mΩ (External connectors may become loose, resulting in large resistance fluctuations) 0.8 ± 0.1 mΩ (Internal flexible connection, robust structure, low and stable resistance) The integrated flexible contact design of this invention provides superior electrical connection performance, with lower resistance, higher stability, and lower energy consumption. 3. Overall structural stability Perform drop tests on the connected battery pack (1 meter height, one drop each from the front, side, and corner) to check for structural damage or disconnection. After 2 / 3 tests, the connector became loose or the wire terminals deformed. The structure remained intact and the connections were not broken after 3 / 3 tests. The modules of this invention form a rigid mechanical connection, which is highly integrated and has a much stronger impact resistance than connection methods that rely on external cables. 4. User experience and portability Evaluate the portability and complexity of use of the connection status. Poor. After connection, the cable is dragging, making it inconvenient to carry and prone to tangling; manual connection is required before use, which is cumbersome. Excellent. When connected, it forms a single unit with no foreign objects, making it highly portable; operation is intuitive and simple. This invention provides a truly "seamless" connection experience, enhancing product integration and user-friendliness. .

[0129] As can be seen from the above, by adopting the technical solution of this embodiment, users can freely combine different numbers of battery modules 6 according to the needs of their electrical equipment, and adjust the total voltage and capacity of the battery pack in real time to achieve true "on-demand power supply". Furthermore, theoretically, this solution allows for an unlimited number of battery modules 6 to be connected, meeting the wide range of power needs from portable devices to large-scale equipment. In addition, during use, battery modules 6 can be added or removed at any time according to power consumption, achieving dynamic capacity adjustment.

[0130] By applying this solution, users no longer need to purchase multiple battery specifications; a single modular system meets various needs, reducing overall costs. During application, if a single module fails, it can be replaced individually without affecting the overall system, further reducing maintenance costs. Furthermore, the modular design provided in this embodiment helps extend product lifecycles, reduces electronic waste, and aligns with sustainable development principles.

[0131] In addition, by applying the solution of this embodiment, connection or separation can be completed with a simple sliding operation without any tools or professional skills; the entire splicing process can be completed in a few seconds, which greatly improves the efficiency of use; the connection between the battery modules 6 is almost seamless, forming a strong integrated battery pack that is easy to carry and use.

[0132] In summary, this embodiment not only achieves innovation in a single battery, but also creates a completely new paradigm for battery use, opening up new possibilities for battery applications and leading to a variety of application scenarios and supporting products.

[0133] It should be noted that although the various embodiments in this specification are illustrated and described using lithium-ion battery cell 3 as an example, those skilled in the art should understand that the scope of protection of this utility model is not limited thereto.

[0134] The core innovation of this utility model lies in the modular mechanical structure, electrical connection method, and drive control logic of the battery. These innovations are unrelated to the specific chemical system of the battery cell 3. Therefore, the self-assembly and disassembly battery solution provided by this utility model is also applicable to, but not limited to, other types of electrochemical system battery cells 3 such as nickel-metal hydride batteries, nickel-cadmium batteries, lead-acid batteries, and solid-state batteries. As long as the battery cell 3 can provide the required output voltage and capacity and can be integrated into the housing structure 5 described in this utility model, it falls within the protection scope of this utility model.

[0135] This broad applicability further demonstrates the value of this utility model as a platform technology, and its focus of protection is on the "structural platform" and "method" for realizing modular connection, rather than being limited to a specific energy storage medium.

[0136] The embodiments described above do not constitute a limitation on the scope of protection of this technical solution. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the above embodiments should be included within the scope of protection of this technical solution.

Claims

1. A movable electrical connector, characterized in that, include: An integrally formed conductor structure, the conductor structure including a first elastic contact portion, a middle connecting portion and a second elastic contact portion arranged sequentially along its axial direction; The first elastic contact portion and the second elastic contact portion are each a petal-shaped structure composed of a plurality of axially extending petals, and there is an axial gap between any two adjacent petals in the circumferential direction. Each of the lobes forms an axially extending central space, and the lobed structure can be radially elastically deformed under the action of external force; The central connecting part is used to fix it to the external components.

2. The movable electrical connector according to claim 1, characterized in that, The central connecting part is a conductor sheet perpendicular to the axis, and the conductor sheet is provided with a positioning structure for fixing to external components.

3. The movable electrical connector according to claim 2, characterized in that, The positioning structure includes at least one positioning slot parallel to the axial direction for engaging with a positioning guide rail on an external component.

4. The movable electrical connector according to claim 3, characterized in that, The number of positioning slots is two, which are arranged in parallel on two opposite sides of the conductor sheet.

5. The movable electrical connector according to claim 4, characterized in that, The profile of the cross section of each positioning slot perpendicular to the slot direction includes at least three sequentially connected corners, the corners being less than 180 degrees and greater than 0 degrees.

6. The movable electrical connector according to claim 5, characterized in that, All the angles mentioned are right angles.

7. The movable electrical connector according to claim 6, characterized in that, Each of the cross sections has a meander-shaped outline.

8. The movable electrical connector according to claim 3, characterized in that, The two positioning slots have a mirror-symmetrical structure.

9. The movable electrical connector according to claim 2, characterized in that, The outer contour of the conductor sheet is wider than the outer contour of the widest part of the first elastic contact portion and the second elastic contact portion.

10. The movable electrical connector according to claim 1, characterized in that, Each of the lobes is evenly distributed along the circumference of the lobed structure, such that the lobed structure is centrally symmetrical with respect to the axis of the central space.

11. The movable electrical connector according to claim 8, characterized in that, The petal-like structure consists of four petals.

12. The movable electrical connector according to claim 1, characterized in that, The first elastic contact portion and the second elastic contact portion are mirror-symmetrical with respect to the middle connecting portion.

13. A battery, characterized in that, The battery housing is provided with a movable electrical connector as described in any one of claims 1 to 12, the movable electrical connector being electrically connected to the electrodes of the battery cell assembly, and the housing being provided with an interface for the movable electrical connector to extend out.

14. A battery pack, characterized in that, include, At least two batteries as claimed in claim 13, each battery being placed side-by-side and close together, each battery being electrically connected to another adjacent battery via a movable electrical connector extending out of its housing.

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