Plug, lithium ion battery and electric equipment

Abstract

The utility model relates to the field of application connection of lithium ion batteries, in particular to a plug, a lithium ion battery and electric equipment. The plug comprises a plug, and is characterized in that the plug comprises a first insulating base, the first insulating base comprises a plugging part located at the front end, a first plugging handheld part located at the rear end and at least two first insulating jacks penetrating front and back, and the two first insulating jacks penetrate through the plugging part and the first plugging handheld part respectively; a first guide part extending in the front-back direction and at least two conductor plug-in parts are further arranged on the outer side face of the plug-in part, the conductor plug-in parts are fixed in the first insulation plug-in holes respectively, the front end section of each conductor plug-in part is a conductor plug pipe, the rear end of each conductor plug-in part is fixedly connected with a wire, and the conductor plug-in parts are connected with the conductor plug-in pipes. Each conductor insertion tube is internally provided with a plurality of conductors, each conductor insertion tube extends out of the rear end of the first insulating base, each conductor insertion tube is internally provided with a metal piece, the middle section of each metal piece is provided with at least one bending part, and when an external conductor insertion piece is inserted into the conductor insertion tube, the metal pieces are bent to form a bent part. The inserted conductor plugging male piece is tightly attached to at least one bending part of the metal piece, and the metal piece is elastically deformed.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery application connections, and more particularly to a plug, a lithium-ion battery, and an electric device. Background Technology

[0002] As lithium-ion battery devices become increasingly widely used, and more and more devices utilize lithium-ion batteries, the requirements for the connection devices between lithium-ion batteries and devices, and between batteries and chargers, are gradually increasing, demanding greater flexibility. Furthermore, with intensifying market competition, users are placing higher demands on the user experience. Summary of the Invention

[0003] One objective of this utility model is to provide a plug, a lithium-ion battery, and an electric device. The plug offers accurate insertion and positioning, easy and smooth insertion and removal, and high stability. Furthermore, its compact structure facilitates plug miniaturization.

[0004] In a first aspect, an embodiment of the present invention provides a plug comprising:

[0005] The first insulating base (1) includes a connector (11) at the front end, a first plug-in grip (12) at the rear end, and at least two first insulating holes (13) that pass through from the front and back respectively. The two first insulating holes (13) pass through the connector (11) and the first plug-in grip (12) respectively. A first guide (14) extending in the front and back direction is also provided on the outer side of the connector (11).

[0006] At least two conductor plugs are provided, each of which is fixed inside the first insulating socket (13). The front end of each conductor plug is a conductor tube (31), and a wire (5) is fixedly connected to the rear end of each conductor plug. Each wire (5) extends from the rear end of the first insulating base (1).

[0007] Each of the conductor cannulas (31) is further provided with a metal part, and the middle section of the metal part is provided with at least one bend (61). When an external conductor plug is inserted into the conductor cannulas (31), the inserted conductor plug is in close contact with at least one bend (61) of the metal part, and the metal part undergoes elastic deformation.

[0008] Optionally, each of the first insulating sockets (13) is provided with a first lateral window (15) on its side, connecting the first insulating socket (13) to the outside, and both first lateral windows (15) are located on the connector (11).

[0009] On the side of each of the aforementioned conductor cannulas (31), a second lateral window (33) is also provided, connecting the conductor cannulas (31) to which it is located and the first lateral window (15). Each second lateral window (33) is opposite to each of the first lateral windows (15).

[0010] Each of the metal parts is further connected to or extends a rearwardly extending limiting segment (62), the rear end of which extends out of the second lateral window (33) of the conductor tube (31) where it is located, and is located inside the first lateral window (15).

[0011] Optionally, the front end of each of the limiting segments (62) is welded and fixed to the inner wall of the conductor cannula (31).

[0012] Each of the bent portions (61) of each metal component is bent away from the second lateral window portion (33), and the rear end of each metal component is a free end.

[0013] When the external conductor insert is inserted into the conductor cannula (31), it abuts against at least one of the bending portions (61), the metal part elastically deforms, the rear end of the metal part moves backward, and the distance between the bending portion (61) and the second lateral window portion (33) decreases.

[0014] Optionally, the rear end of the metal part abuts against the hole wall on the side where the second lateral window (33) is located.

[0015] Optionally, a clamping part is provided at the rear end of each of the conductor plugs, and the exposed core of the front end of each conductor (5) is fixed in the clamping part.

[0016] Optionally, each of the conductor cannulas (31) is formed by bending a metal sheet. The two opposite edges of the bent metal sheet are opposite to each other and have a gap. When an external conductor plug is inserted into the conductor cannulas (31), the metal part elastically deforms and the gap increases.

[0017] Optionally, a protrusion and / or a recess are provided on the outer side of the first plug-in grip (12).

[0018] Optionally, the first guide portion (14) is a ridge and / or a groove.

[0019] Secondly, the present invention provides a lithium-ion battery comprising,

[0020] In any of the above-described plugs, two wires (5) extending from the rear end of the plug are electrically connected to the two electrodes of the lithium-ion battery, respectively.

[0021] Secondly, the present invention provides an electric device, wherein the power plug of the electric device is any of the plugs described above, and the two ends of the two wires (5) extending from the rear end of the plug are respectively electrically connected to the drive circuit of the electric device.

[0022] As can be seen from the above, in summary, the plug used in this embodiment offers accurate insertion and positioning, effortless and smooth insertion and removal, and high insertion and removal stability. Furthermore, its compact structure facilitates plug miniaturization. Attached Figure Description

[0023] 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.

[0024] Figure 1 A three-dimensional structural schematic diagram of the male connector provided in Embodiment 1 of this utility model;

[0025] Figure 2 This is a schematic diagram of the assembly structure of the male connector provided in Embodiment 1 of the present utility model;

[0026] Figure 3 This is a cross-sectional view of the male connector provided in Embodiment 1 of the present utility model;

[0027] Figure 4 This is a schematic diagram of the right side view of the male connector provided in Embodiment 1 of this utility model;

[0028] Figure 5 This is a schematic diagram of the left side of the male connector provided in Embodiment 1 of this utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the male plug provided in Embodiment 1 and the female plug provided in Embodiment 2 of this utility model.

[0030] Figure 7 This is a cross-sectional structural diagram showing the connection between the male plug provided in Embodiment 1 and the female plug provided in Embodiment 2 of this utility model.

[0031] Figure 8 This is a three-dimensional structural diagram of the female connector provided in Embodiment 2 of this utility model;

[0032] Figure 9 This is another three-dimensional structural diagram of the female connector provided in Embodiment 2 of this utility model;

[0033] Figure 10 This is a schematic diagram of the assembly structure of the female connector provided in Embodiment 2 of this utility model;

[0034] Figure 11 This is a cross-sectional view of the female insert provided in Embodiment 2 of this utility model.

[0035] 1: First insulating base; 11: Connecting part; 12: First plug-in / plug grip;

[0036] 13: First insulating socket; 14: First guide portion; 15: First side window portion;

[0037] 6: Second metal part; 61: Bending part; 62: Limiting section;

[0038] 3: Conductor connector female part; 31: Conductor tube; 33: Second side window;

[0039] 2: Second insulating base; 21: Plug-in terminal; 22: Chamber;

[0040] 23: Second insulating socket; 24: Second guide section; 25: Lateral inverted position;

[0041] 26: Inlet section; 4: Conductor connector; 41: Lateral snap-fit ​​part; 5: Wire. Detailed Implementation

[0042] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Here, 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. Example

[0043] See Figures 1-6 .

[0044] This embodiment provides a plug, specifically a male plug. It mainly includes an insulating base (denoted as the first insulating base 1) serving as the male plug, and at least two conductor plugs.

[0045] Each conductor plug can be either a male or female component. In this embodiment, the female conductor plug 3 is used as an example.

[0046] The first insulating base 1 includes a connector 11 located at the front end for connecting with other plugs, a plug-in grip located at the rear end for holding (denoted as the first plug-in grip 12), and at least two insulating sockets (both denoted as the first insulating sockets 13) extending through the front and rear.

[0047] The insertion portion 11 of the first insulating base 1 is an insulating male plug for connecting with the female plug. A guide portion (denoted as the first guide portion 14) extending in the front-rear direction is also provided on the outer side of the insertion portion 11. The first guide portion 14 can be designed as a groove that matches the protrusion of the inner wall of the matching female plug, as shown in the figure, or it can be designed as a protrusion that matches the groove of the female plug, or it can be other.

[0048] The first insulating socket 13 is used to accommodate and fix the conductor connector 3. Each first insulating socket 13 passes through the connector portion 11 and the first insertion handle portion 12 from front to back, and forms a socket on the front and rear faces of the first insulating base 1, respectively. Each conductor connector 3 is fixed in the first insulating socket 13, serving as a conductor connector.

[0049] The front end of each conductor connector 3 is located within the front socket of the first insulating socket 13, and does not extend beyond the front socket. It has good moisture-proof and dust-proof performance, and during the insertion and removal process, the conductor connector 3 that may be electrified is completely contained within the first insulating base 1, completely isolated from the user, avoiding the risk of electric shock and providing good safety in use.

[0050] When connected to an external female plug, the connector 11 at the front end of the male plug in this embodiment is inserted into the chamber 22 of the female plug at the opposite end, and the conductor connector 4 located in the chamber 22 of the female plug at the opposite end is inserted into the conductor connector 3 of the male plug in this embodiment, thereby realizing the electrical connection between the plugs.

[0051] In this embodiment, the middle part of each conductor connector 3 is fixed inside the first insulating base 1, and the rear end is respectively connected to a wire 5. The rear ends of the two wires 5 extend from the rear end of the first insulating base 1 for electrical connection with an external circuit (such as, but not limited to, a power source). When the plug of this embodiment is applied to a lithium-ion battery, the wires 5 are electrically connected to the positive and negative terminals of the lithium-ion battery.

[0052] In addition, a first guide portion 14 is provided on the outer side of the connector 11. When it is connected to the external female connector, the second guide portion 24 on the inner wall of the chamber 22 at the front end of the female connector can match the first guide portion 14 on the outer side of the male connector in this embodiment. This allows the female connector to be pushed along the guide portion until it is fully matched with the male connector in this embodiment. The conductor connector male 4 on the female connector is accurately and completely inserted into the conductor connector female 3 located in each of the first insulating sockets 13 of the male connector in this embodiment. This avoids problems such as loosening or bending of the conductor connector caused by misalignment due to invisibility. At the same time, this design also helps to improve the smoothness of the connection and makes the connection more effortless.

[0053] This embodiment provides a structure for a conductor connector female 3, in which a conductor tube 31 with an opening facing forward is formed at the front end of the conductor connector female 3. During connection, the conductor connector male 4 on the opposite end of the female connector is inserted into the conductor tube 31 located at the front end to achieve electrical connection.

[0054] In this embodiment, the conductor tube 31 at the front end of each female conductor connector 3 may be formed by bending a metal piece (referred to as the first metal piece) located at the front end. The two opposite edges of the bent first metal piece do not touch and leave a certain gap. The length direction of the gap is parallel to the axial direction of the conductor tube 31, and the width of the gap is the same at all points. When the male conductor connector 4 on the opposite female connector is inserted into the conductor tube 31 at the front end of the male connector in this embodiment, the conductor tube 31 expands slightly elastically, the gap on the conductor tube 31 increases, and the conductor tube 31 is tightly confined between the outer wall of the inserted male conductor connector 4 and the inner wall of the first insulating socket 13 where the female conductor connector 3 is located, making it difficult to loosen.

[0055] A metal component (referred to as a second metal component 6) is further installed inside the conductor tube 31 at the front end of each conductive connector female component. This metal component is, for example, but not limited to, a metal strip or sheet with elastic deformation. At least one bent portion 61 is provided in the middle of the second metal component 6. The front end of the second metal component 6 is fixed inside the conductor tube 31, while the middle portion and the bent portion 61 are free ends, suspended in the middle of the conductor tube 31. The rear end of the second metal component 6 is also a free end, extending from the rear end of the conductor tube 31.

[0056] When the male conductor connector 4 of the female connector is inserted into the conductor tube 31 of the female conductor connector 3 of the male connector in this embodiment, the male conductor connector 4 and at least one bent portion 61 in the middle of the second metal part 6 in the conductor tube 31 are closely attached and have mutual pressure. The inserted male conductor connector 4 is tightly confined in the conductor tube 31. Under the pressure, the second metal part 6 elastically deforms, further pressing the male conductor connector 4 into the conductor tube 31, so as to have good electrical contact, enhance conductivity, and not be easy to loosen, thereby improving the connection reliability between the male connector and the external female connector.

[0057] As an illustration of this embodiment, lateral windows (referred to as first lateral windows 15) communicating with the outside can also be opened laterally on each of the first insulating sockets 13 of the first insulating base 1; simultaneously, lateral windows (referred to as second lateral windows 33) communicating with the outside can be opened laterally on the conductor tubes 31 at the front end of each conductor connector 3. When each conductor connector 3 is fixed in each of the first insulating sockets 13 of the first insulating base 1, the second lateral windows 33 on each conductor connector 3 are directly opposite the first lateral windows 15 on the first insulating socket 13 where they are located, forming lateral windows communicating with the outside for each conductor tube 31.

[0058] Furthermore, the end segments of the front ends of the second metal pieces 6 located within the conductor insertion tubes 31 at the front ends of each conductor connector female piece 3 are connected to or bent and extended by limiting segments 62. The front ends of the limiting segments 62 are connected to or integral with the front ends of the second metal pieces 6, forming an acute angle α. The rear end of the limiting segments 62 extends from the second side toward the window portion 33 and is located within the first side window portion 15. Specifically, each bent portion 61 of the middle segment of the second metal piece 6 bends away from the first side window portion 15 and the second side window portion 33. The bent portions 61 are at a certain distance from the hole wall to allow the inserted conductor connector male piece 4 to be inserted. When the male conductor connector 4 is inserted, it abuts against at least one bent portion 61 of the second metal member 6. The second metal member 6 undergoes elastic deformation, and its rear end moves backward. The distance between the bent portion 61 and the second lateral window 33 decreases. Under the elastic force of the second metal member 6, the inserted male conductor connector 4 is tightly inserted into the socket of the female conductor connector 3, maintaining good conductor contact and preventing it from easily slipping out. The inner wall of the chamber 22 of the female connector inserted at the opposite end presses tightly against the first lateral window 15. The end of the limiting segment 62 located at the first lateral window 15 abuts against the inner wall of the chamber 22 of the female connector inserted at the opposite end, forming an abutting and engaging relationship to prevent the connection from loosening.

[0059] It should be further explained that, preferably, the free end of the rear end of the second metal part 6 is pressed tightly against the hole wall of the conductor tube 31 on the same side as the second lateral window 33. Under the resistance of the hole wall, it cannot move radially outward and can only move along the hole wall. Under the squeezing action of the inserted conductor connector 4, the middle bent part 61 of the second metal part 6 elastically deforms. Its free end can only move backward under the limitation of the hole wall and is prohibited from moving in other directions. Under the action of pressure, the middle bent part 61 of the second metal part 6 shifts towards the second lateral window 33. The deformation of the second metal part 6 has an elastic force that restores the deformation tendency. The inserted conductor connector 4 is tightly confined in the conductor tube 31 and is tightly pressed against by the elastic deformation, making it difficult to detach. This ensures the reliability of the electrical connection between the conductor connector 4 and the conductor connector 3.

[0060] When the connector of this embodiment is applied to the discharge plug of a lithium-ion battery, the battery pack includes a lithium-ion battery body. The total positive "+" and total negative "-" terminals of the lithium-ion battery body are electrically connected to the two wires 5 at the rear end of the connector of this embodiment. The lithium-ion battery discharges, outputting current to drive an external power device connected to the connector of this embodiment. The lithium-ion battery body may include, but is not limited to, a plurality of lithium-ion cells, which are electrically connected together in series, parallel, or a combination of series and parallel connections, providing current to the outside as a whole.

[0061] When the plug of this embodiment is used as a charging plug for lithium-ion batteries, the two wires 5 at the rear end of the male plug of this embodiment are electrically connected to the positive "+" and negative "-" terminals of each lithium-ion cell in the battery pack, respectively. When the male plug of this embodiment is connected to the plug of an external power source, the current input from the charging power source is input to each lithium-ion cell through the male plug of this embodiment to charge each cell.

[0062] Alternatively, the two plugs in this embodiment can be used simultaneously as the discharge plug and charging plug for the lithium-ion battery, respectively.

[0063] The plug in this embodiment can also be used as a power plug for electric devices. In this embodiment, the two ends of the two wires 5 extending from the rear end of the plug are electrically connected to the drive circuit of the electric device to introduce external current to drive the electric device.

[0064] The plug in this embodiment has a simple structure, which is conducive to miniaturization design. Its application in lithium-ion battery packs and power equipment is beneficial to the miniaturization design of products and makes them more convenient for people to use.

[0065] In this embodiment, all of the male and female conductors 3 are located within the first insulating socket 13. Specifically, the front end does not extend beyond the front socket, and the rear end is completely in front of the rear socket without being exposed. The plug has good moisture and dust resistance, and helps to prevent users from accidentally contacting conductive parts, thus improving electrical safety.

[0066] As an illustration of this embodiment, each conductor connector 3 of the male connector in this embodiment has a first clamping portion 34 formed at its rear end. Each first clamping portion 34 may be formed by bending a sheet of metal at its end. Each first clamping portion 34 tightly clamps the exposed core of the exposed conductor 5 at the front end of the conductor 5. Each conductor 5 extends from the rear end of the first insulating base 1 to be electrically connected to the positive and negative poles of an external power source or electrical equipment.

[0067] As an illustration of this embodiment, the first insertion / removal grip portion 12 of the first insulating base 1 is provided as a protrusion (such as a rib) and / or a recess for easy finger positioning and gripping, and its shape can be strip-shaped or mesh-like. This facilitates user insertion and removal operations, improves ease of use, and prevents hand slippage during insertion and removal.

[0068] As an illustration of this embodiment, the outer side of the first insulating base 1 of the male plug near the front end of the plug end 21 (which is in contact with the inner wall of the female plug) is also provided with a snap-on hook position. When the plug of this embodiment is plugged into the external female plug, the snap-on hook position (for example, a recess, which is the second in this embodiment) on the outer side of the plug part 11 of the male plug is snapped and limited to the snap-on hook position (for example, a protrusion that matches the recess) on the inner wall of the cavity 22 of the female plug, so that the connection is not easy to loosen. The design of this embodiment makes the plugging reliable and can also avoid reverse plugging, ensuring the safety of the electrical connection.

[0069] As an illustration of this embodiment, the rear end face of the first insulating base 1 is also provided with recessed or raised markings, such as positive "+" and negative "-". Each marking is integrally injection molded with the first insulating base 1.

[0070] In summary, the male plug used in this embodiment offers accurate insertion and positioning, effortless and smooth insertion and removal, and high stability. Furthermore, its compact structure facilitates plug miniaturization. Example

[0071] See Figure 6-11 .

[0072] This embodiment provides a plug, specifically a female plug, which mainly includes an insulating base (denoted as the second insulating base 2) and at least two conductor connectors, wherein each conductor connector can be either a male or a female component. This embodiment uses the male conductor connector 4 as an example.

[0073] The second insulating base 2 has a cavity 22 with an opening at the front end, and the section near the front end is a connector 21 for inserting an insulating male plug at the opposite end.

[0074] The rear end of the second insulating base 2 is provided with at least two insulating holes (denoted as second insulating holes 23 for illustration; in this embodiment, two second insulating holes 23 are provided for illustration). The front end of each second insulating hole 23 is located at the rear end of the chamber 22 and communicates with the front end of the chamber 22. The rear end of each second insulating hole 23 is located at the rear end face of the second insulating base 2.

[0075] A conductor connector is fixed in each of the second insulating sockets 23. Each conductor connector can be a male conductor connector 4 or a female conductor connector 3. In this embodiment, the male conductor connector 4 is used as an example.

[0076] Each male conductor connector 4 has its front end extending into the cavity 22, spaced apart from each other and spaced from the inner wall of the cavity 22, for connection with the female conductor connector 3. The rear end of each male conductor connector 4 is connected to a wire 5, which extends from the rear end of the second insulating base 2 for electrical connection to an external circuit (e.g., but not limited to, a power source). When the plug of this embodiment is applied to a lithium-ion battery, the wires 5 are electrically connected to the positive and negative terminals of the lithium-ion battery.

[0077] In this embodiment, the front end of each conductor connector 4 does not extend beyond the front opening of the cavity 22. Compared with the design where the conductor connector extends out of the insulating base, it has good moisture-proof and dust-proof performance. During the insertion and removal process, the conductor connector 4, which may be charged, is completely located inside the second insulating base 2 and is completely isolated from the user, avoiding the risk of electric shock and providing good safety in use.

[0078] A second guide portion 24 extending in the front-rear direction is provided on the inner wall of the cavity 22 of the second insulating base 2, wherein the second guide portion 24 can be protruding or recessed. In this way, although the male conductor connector 4 of this embodiment is completely located in the cavity 22 at the front end of the second insulating base 2, when it is connected with the male connector of the opposite end, the first guide portion 14 on the outer side of the male connector of the opposite end matches the second guide portion 24 on the inner wall of the cavity 22 at the front end of the female connector of this embodiment. This allows the male connector and the female connector to be smoothly pushed along the guide portion, so that the male conductor connector 4 in the female connector of this embodiment is accurately inserted into the connector hole of the female conductor connector 3 of the male connector of the opposite end. This avoids problems such as loosening or distortion of the conductor connector caused by misalignment due to invisibility. At the same time, this design also helps to improve the smoothness of the connection and makes the connection more effortless.

[0079] As can be seen from the above, the female plug in this embodiment is accurate in positioning, easy and smooth in insertion and removal, and has high stability. Moreover, its compact structure is conducive to the miniaturization of the plug.

[0080] In this embodiment, each conductor connector 4 has a second clamping portion formed at its rear end. Each second clamping portion may be formed by bending a sheet of metal at its end. The exposed core of the exposed conductor 5 at the front end of the conductor 5 is tightly clamped in each second clamping portion. Each conductor 5 extends from the rear end of the first insulating base 1 to be electrically connected to the positive and negative poles of an external power source or electrical equipment.

[0081] The female plug structure in this embodiment is simple, which is conducive to the miniaturization of the power plug design.

[0082] As an illustration of this embodiment, the conductor connector 4 in this embodiment may be, but is not limited to, a conductor tube 31, or may be, but is not limited to, a solid conductor strip or insert. As an illustration of this embodiment, it is preferable to design the front end of each conductive strip as a tip with gradually decreasing thickness or diameter.

[0083] As an illustration of this embodiment, each conductor connector 4 in this embodiment is provided with a lateral latching portion 41 extending laterally like a branch on at least one side of its middle portion. The angle α formed between the extended lateral latching portion 41 and the conductor connector 4 is an acute angle or an obtuse angle (i.e., not a right angle). For example, but not limited to, the lateral latching portion 41 extends from back to front in the side of the conductor connector 4 and forms an acute angle with the front end of the conductor connector 4.

[0084] On the wall of each second insulating socket 23 at the rear end of the second insulating base 2, there are also laterally recessed lateral hanging positions 25. The recessed direction of each lateral hanging position 25 is consistent with the extension direction of the lateral snap-fit ​​part 41 of the guide connector located in the second insulating socket 23. The width of the second insulating socket 23 at the location of the lateral hanging position 25 is greater than the widest width of the conductor connector section at the location of the lateral hanging part. During installation, the conductor connector 4, which holds the wire 5 at its rear end, is inserted into the second insulating socket 23 from the rear end of the second insulating base 2. The lateral hanging position 25, extending laterally, elastically deforms under the pressure of the socket wall. When inserted to a certain extent, the lateral latching part 41 on the conductor connector 4 enters the lateral hanging position 25 of the second insulating socket 23. The lateral latching part 41 does not contact the socket wall, and when the pressure decreases, it returns to its natural state. The lateral latching part 41 remains in its natural state, confined within the lateral hanging position 25, and thus positioned. This design of the lateral latching part 41 and the lateral hanging position 25 facilitates the positioning of the conductor connector 4, improving assembly efficiency. Furthermore, this design ensures high positioning accuracy of the conductor connector 4 when connected to an external plug, preventing displacement due to insertion and removal forces, thus improving product durability.

[0085] As an illustration of this embodiment, an inlet section 26 is also provided on the wall of the second insulating socket 23. The inlet section 26 is located on the opposite side from the side where the inverted position is located, and is located on the rear end socket side of the second insulating socket 23. At the inlet section 26 of each second insulating socket 23, the diameter of the hole at the inlet section 26 gradually decreases from back to front. Between the front end and the rear end of the lateral inverted position 25 is a limiting section 62 with one end diameter larger than the main body of the conductor connector 4 but smaller than the widest width of the part where the lateral inverted part is located. When the conductor connector 4 is inserted from back to front, when the lateral latching part 41 reaches the front of the lateral inverted position 25, the conductor connector 4, which is opposite to the lateral inverted part, is pressed against the inner wall of the guide section 26. The conductor connector 4 is pushed along the guide section 26. When the lateral latching part 41 passes through the limiting section 62 between the guide section 26 and the lateral inverted position 25, the lateral guide section 26 is elastically deformed under the pressure of the hole wall until the lateral latching part 41 enters the lateral inverted position 25 and returns to its natural state. The lateral latching part 41 is then positioned inside the lateral inverted position 25.

[0086] As can be seen from the above, the design of the inlet section 26 can further facilitate the positioning and assembly of the conductor connector 4 and improve the assembly efficiency.

[0087] As an illustration of this embodiment, the front end of the conductor connector 4 can be designed as a flat metal strip, and a lateral latching part 41 can be provided on the lower surface of the flat metal strip.

[0088] As an illustration of this embodiment, the outer periphery of the rear end of the second insulating base 2 is provided with a recess or protrusion (such as a rib) to facilitate finger positioning and gripping, which can be strip-shaped or mesh-shaped. This design improves ease of insertion and removal for the user, enhances usability, and prevents hand slippage during insertion and removal.

[0089] As an illustration of this embodiment, the rear end face of the second insulating base 2 is also provided with recessed or raised markings, such as positive "+" and negative "-". Each marking is integrally injection molded with the first insulating base 1.

[0090] When the plug of this embodiment is applied to a lithium-ion battery, specifically, the battery pack includes a lithium-ion battery body. The lithium-ion battery body may include, but is not limited to, a plurality of lithium-ion cells. The lithium-ion cells are electrically connected together in series, parallel, or a combination of series and parallel connections, providing current to the outside as a whole. The total positive "+" and total negative "-" terminals of the battery body are electrically connected to the conductor plugs of the battery's power output interface (which may, but is not limited to, be implemented using the plug of this embodiment). The lithium-ion battery discharges, outputting current to drive external power equipment.

[0091] When the plug in this embodiment is used as a discharge output plug for a lithium-ion battery, the two conductor connectors 3, which are power connectors, are electrically connected to the total positive "+" and total negative "-" of the battery pack, respectively, and output power to external power equipment.

[0092] When the plug of this embodiment is used as a charging input plug for a lithium-ion battery, the two conductor connectors 3, which serve as power output connectors, are electrically connected to the positive "+" and negative "-" terminals of each lithium-ion cell in the battery pack, respectively. When the plug of this embodiment is connected to the plug of an external power source, the current input from the charging power source is input to each lithium-ion cell to charge each cell.

[0093] The plug in this embodiment can be used as a discharge plug for a lithium-ion battery, or as a charging plug for a lithium-ion battery. Alternatively, both plugs in this embodiment can be used simultaneously as a discharge plug and a charging plug for a lithium-ion battery, respectively.

[0094] The plug in this embodiment has a simple structure, which is conducive to the miniaturization design of the battery pack plug.

[0095] The plug in this embodiment can also be used as a power plug for electric devices. The two ends of the two wires 5 extending from the rear end of the plug are electrically connected to the drive circuit of the electric device to introduce external current to drive the electric device.

[0096] 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 plug, comprising: a first insulating base (1) including a connector portion (11) at a front end, a first plug-pull handle portion (12) at a rear end, and at least two first insulating insertion holes (13) extending through the first insulating base (1) from front to rear, the first insulating insertion holes (13) extending through the connector portion (11) and the first plug-pull handle portion (12), respectively, and a first guide portion (14) extending in a front-rear direction on an outer side of the connector portion (11); at least two conductor inserts, each of the conductor inserts being fixed in one of the first insulating insertion holes (13), each of the conductor inserts having a conductor insertion tube (31) at a front end, and a wire (5) being fixed to a rear end of each of the conductor inserts, the wire (5) extending out of the rear end of the first insulating base (1); and a metal member being provided in each of the conductor insertion tubes (31), the metal member having at least one bent portion (61) in a middle section of the metal member, the conductor insert being in contact with the at least one bent portion (61) of the metal member when the conductor insert is inserted into the conductor insertion tube (31), and the metal member being elastically deformed.

2. The plug according to claim 1, wherein: each of the first insulating insertion holes (13) has a first lateral window portion (15) on a lateral side of the first insulating insertion hole (13), the first lateral window portion (15) being in communication with the first insulating insertion hole (13) and an outside, and the first lateral window portions (15) are provided on the connector portion (11); each of the conductor insertion tubes (31) has a second lateral window portion (33) on a lateral side of the conductor insertion tube (31), the second lateral window portion (33) being in communication with the conductor insertion tube (31) and the first lateral window portion (15), and the second lateral window portions (33) are opposite to the first lateral window portions (15), respectively; and each of the metal members has a limiting section (62) extending rearward from a front end of the metal member, the limiting section (62) extending out of the second lateral window portion (33) of the conductor insertion tube (31) and into the first lateral window portion (15).

3. The plug according to claim 2, wherein: a front end of the limiting section (62) is welded to an inner wall of the conductor insertion tube (31); the at least one bent portion (61) of the metal member is bent away from the second lateral window portion (33); a rear end of the metal member is a free end; and when the conductor insert is inserted into the conductor insertion tube (31), the metal member is in contact with the at least one bent portion (61), the metal member is elastically deformed, the rear end of the metal member moves rearward, and a distance between the at least one bent portion (61) and the second lateral window portion (33) is reduced.

4. The plug according to claim 3, wherein: the rear end of the metal member is in contact with a hole wall on a side of the second lateral window portion (33).

5. The plug according to claim 3, wherein: each of the conductor inserts has a clamping portion at a rear end of the conductor insert, and a bare wire core of a front end of the wire (5) is fixed in the clamping portion. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 6. The plug of claim 1, wherein Each of the conductor insertion tubes (31) is formed by bending a metal sheet, and opposite edges of the bent metal sheet are opposite to each other and have a gap, and when an external conductor insertion piece is inserted into the conductor insertion tube (31), the metal piece is elastically deformed, and the gap is increased.

7. The plug of claim 1, wherein A protrusion and / or a recess is further provided on the outer side of the first plug-in hand grip (12).

8. The plug of claim 1, wherein The first guide portion (14) is a protrusion and / or a recess.

9. A lithium-ion battery, characterized in that The plug of any one of claims 1 to 8, wherein two wires (5) extending from the rear end of the plug are electrically connected to two electrodes of the lithium ion battery, respectively. The power plug of the electric device is the plug of any one of claims 1 to 8, and two ends of the two wires (5) extending from the rear end of the plug are electrically connected to a driving circuit of the electric device, respectively.

10. An electrically powered device, characterized by ​

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