battery

Abstract

This application relates to a battery. The protection circuit assembly includes a protection circuit board, conductive posts, and an insulating support. The protection circuit board is mounted on the insulating support and located between an insulating sheet and the insulating support. A positive electrode cap passes through the insulating sheet and connects to the first side of the protection circuit board. The second side of the protection circuit board connects to the positive electrode of the battery cell via the conductive posts. The insulating sheet is positioned over an opening in the conductive outer casing to cooperate with the positive electrode cap in sealing the opening. The positive electrode cap is conductively connected to the positive electrode of the battery cell sequentially via the protection circuit board and the conductive posts. The insulating support provides support and isolation for the protection circuit board, thus minimizing the direct impact of forces on the protection circuit board onto the battery cell, thereby greatly improving the battery's safety. One side of the protection circuit board is conductively connected to the positive electrode cap, and the other side is conductively connected to the positive electrode of the battery cell via the conductive posts. This helps improve the connection stability of the protection circuit on the protection circuit board, thereby maximizing the battery's protection performance.

Description

Technical Field

[0001] This application relates to the field of batteries, and in particular to batteries. Background Technology

[0002] Traditional single-cell batteries lack their own protection functions, which can easily lead to battery failure, fire, or explosion, thus posing serious safety hazards.

[0003] To ensure safe use, battery systems must have added protection circuits. However, existing methods of adding protection circuits may reduce the safety of battery use or reduce the connection stability of the protection circuits, resulting in insufficient protection performance. Utility Model Content

[0004] Therefore, it is necessary to provide a battery.

[0005] One embodiment of this application is a battery comprising a positive electrode cap, an insulating sheet, a protection circuit assembly, a battery cell, and a conductive casing;

[0006] The protection circuit assembly and the battery cell are both housed in the mounting cavity of the conductive housing, and the negative terminal of the battery cell is connected to the conductive housing.

[0007] The protection circuit assembly includes a protection circuit board, conductive pillars, and an insulating support. The protection circuit board is disposed on the insulating support and is located between the insulating sheet and the insulating support.

[0008] The positive electrode cap passes through the insulating sheet and connects to the first side of the protective circuit board, and the second side of the protective circuit board is connected to the positive electrode of the battery cell through the conductive post;

[0009] The insulating sheet is disposed on the opening of the conductive outer shell to cooperate with the positive electrode cap in sealing the opening.

[0010] The aforementioned battery, through the cooperation of a positive electrode cap, insulating sheet, protection circuit assembly, battery cell, and conductive shell, cleverly incorporates a protection circuit assembly between the positive electrode cap and the battery cell. On one hand, the positive electrode cap is sequentially connected to the positive electrode of the battery cell via a protection circuit board and conductive posts, while the insulating support provides support and isolation for the protection circuit board. This minimizes the direct impact of forces on the protection circuit board onto the battery cell, thereby greatly improving the battery's safety. On the other hand, the protection circuit board is conductively connected to the positive electrode cap on one side and to the positive electrode of the battery cell on the other side via conductive posts. This enhances the connection stability of the protection circuit on the protection circuit board, thus maximizing the battery's protection performance.

[0011] In some embodiments, the protection circuit assembly further includes conductive clips, conductive sheets, and insulating fasteners;

[0012] The conductive buckle abuts against the conductive sheet and is disposed in the insulating fastener;

[0013] The conductive fastener engages with the conductive post, and the conductive sheet is connected to the positive electrode of the battery cell;

[0014] The insulating fastener is disposed between the insulating bracket and the battery cell, and has a gap between itself and both the insulating bracket and the battery cell.

[0015] In some embodiments, the conductive post is provided with a groove, and the conductive fastener is provided with a pawl that matches the groove;

[0016] The conductive latch engages with the groove of the conductive post via the pawl.

[0017] In some embodiments, the insulating bracket is provided with a support guide structure, and the support guide structure has a limiting hole. The support guide structure is configured to guide the conductive post through the limiting hole so that the conductive post engages with the conductive fastener; or...

[0018] The conductive fastener is integrally formed with the conductive sheet; or...

[0019] The conductive sheet is a circular metal sheet; or...

[0020] The conductive buckle is an elastic buckle structure.

[0021] In some embodiments, the conductive housing is provided with a shell, the shell having the mounting cavity and the opening communicating with the mounting cavity;

[0022] The housing is provided with a first elastic protrusion and a second elastic protrusion protruding towards the interior of the mounting cavity;

[0023] The first elastic protrusion and the second elastic protrusion respectively abut against the insulating fastener to confine the insulating fastener to the first region of the mounting cavity;

[0024] The first elastic protrusion also abuts against the battery cell to confine the battery cell to the second region of the mounting cavity;

[0025] The second resilient protrusion also abuts against the insulating bracket to confine the insulating bracket to a third region of the mounting cavity.

[0026] In some embodiments, both the first elastic protrusion and the second elastic protrusion are protrusions or protruding rings.

[0027] In some embodiments, the end of the housing away from the opening is provided with a punching protrusion.

[0028] In some embodiments, the end of the housing near the opening is provided with a rolled edge limiting structure, which abuts against the insulating support to limit the insulating support between the rolled edge limiting structure and the second elastic protrusion.

[0029] In some embodiments, the cell is a cylindrical cell, and the battery is a cylindrical battery.

[0030] In some embodiments, the battery further includes an insulating protective layer that covers the conductive outer casing. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of an embodiment of the battery described in this application.

[0033] Figure 2 for Figure 1 Another schematic diagram of the embodiment shown.

[0034] Figure 3 for Figure 2 A schematic cross-sectional view along the AA direction of the embodiment shown.

[0035] Figure 4 for Figure 3 A partial enlarged structural diagram of the embodiment shown.

[0036] Figure 5 for Figure 4 A partial structural schematic diagram of the embodiment shown.

[0037] Figure 6 for Figure 5 A partial structural schematic diagram of the embodiment shown.

[0038] Figure 7 for Figure 1 The illustrated embodiment is shown in an exploded view.

[0039] Figure 8 for Figure 7 A partial structural schematic diagram of the embodiment shown.

[0040] Figure 9 for Figure 7 A schematic diagram of the conductive outer casing of the embodiment shown.

[0041] Reference numerals: Battery 100, positive electrode cap 200, insulating sheet 300, protection circuit assembly 400, battery cell 500, conductive outer shell 600, insulating protective layer 700;

[0042] Protective circuit board 410, conductive post 420, insulating bracket 430, conductive fastener 440, conductive sheet 450, insulating fastener 460;

[0043] Groove 421, support guide structure 431, limiting hole 432, pawl 441;

[0044] Cell positive electrode 510, cell negative electrode 520;

[0045] First elastic protrusion 610, second elastic protrusion 620, housing 630, mounting cavity 640, first region 641, second region 642, third region 643, opening 650, rolled edge limiting structure 660, and impact protrusion 670. Detailed Implementation

[0046] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0047] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0048] Furthermore, the terms "first" 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 as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0051] This application discloses a battery that includes some or all of the technical features of the following embodiments; that is, the battery includes some or all of the following structures. In one embodiment of this application, a battery includes a positive electrode cap, an insulating sheet, a protection circuit assembly, a battery cell, and a conductive shell; the protection circuit assembly and the battery cell are both housed in the mounting cavity of the conductive shell, and the negative electrode of the battery cell is connected to the conductive shell; the protection circuit assembly includes a protection circuit board, a conductive post, and an insulating support; the protection circuit board is disposed on the insulating support and located between the insulating sheet and the insulating support; the positive electrode cap passes through the insulating sheet and connects to a first side of the protection circuit board, and a second side of the protection circuit board is connected to the positive electrode of the battery cell through the conductive post; the insulating sheet is disposed on the opening of the conductive shell to cooperate with the positive electrode cap in closing the opening. The aforementioned battery, through the coordinated use of a positive electrode cap, insulating sheet, protection circuit assembly, battery cell, and conductive shell, cleverly incorporates a protection circuit assembly between the positive electrode cap and the battery cell. On one hand, the positive electrode cap is sequentially connected to the positive electrode of the battery cell via a protection circuit board and conductive posts, while the insulating support provides support and isolation for the protection circuit board. This minimizes the direct impact of forces on the protection circuit board onto the battery cell, significantly improving battery safety. On the other hand, the protection circuit board is conductively connected to the positive electrode cap on one side and to the positive electrode of the battery cell on the other side via conductive posts. This enhances the connection stability of the protection circuit on the protection circuit board, thereby maximizing the battery's protection performance. The following section will further elaborate on this concept. Figures 1 to 9 The battery will be described in detail below.

[0052] In some embodiments, a battery 100 such as Figure 1 and Figure 2 As shown, combined with Figure 3 The battery 100 includes a positive electrode cap 200, an insulating sheet 300, a protection circuit assembly 400, a battery cell 500, and a conductive outer casing 600; together Figure 4 and Figure 5 The protection circuit assembly 400 and the battery cell 500 are both housed in the mounting cavity 640 of the conductive housing 600 and are combined together. Figure 6 and Figure 7 The negative electrode 520 of the battery cell 500 is connected to the conductive outer shell 600; the protection circuit assembly 400 includes a protection circuit board 410, a conductive post 420, and an insulating support 430. The protection circuit board 410 is disposed on the insulating support 430 and is located between the insulating sheet 300 and the insulating support 430; the positive electrode cap 200 passes through the insulating sheet 300 and is connected to the first side of the protection circuit board 410, and the second side of the protection circuit board 410 is connected to the positive electrode 510 of the battery cell 500 through the conductive post 420; the insulating sheet 300 is disposed on the opening 650 of the conductive outer shell 600 to cooperate with the positive electrode cap 200 to seal the opening 650. This structural design, through the cooperation of the positive electrode cap 200, insulating sheet 300, protection circuit assembly 400, battery cell 500, and conductive shell 600, cleverly places the protection circuit assembly 400 between the positive electrode cap 200 and the battery cell 500. On the one hand, the positive electrode cap 200 is conductively connected to the positive electrode 510 of the battery cell sequentially through the protection circuit board 410 and conductive post 420, while the insulating bracket 430 provides support and isolation for the protection circuit board 410. Therefore, the force on the protection circuit board 410 is minimized from directly impacting the battery cell 500, thereby greatly improving the safety of the battery 100. On the other hand, the protection circuit board 410 is conductively connected to the positive electrode cap 200 on one side and to the positive electrode 510 of the battery cell on the other side through the conductive post 420. This helps to improve the connection stability of the protection circuit on the protection circuit board 410, thereby ensuring the protection performance of the battery 100 as much as possible.

[0053] In some of these embodiments, such as Figure 1 and Figure 7 As shown, the battery cell 500 is a cylindrical battery cell, and the battery 100 is a cylindrical battery. Combined with... Figure 8 Correspondingly, structural components such as the insulating sheet 300, protective circuit board 410, insulating bracket 430, conductive buckle 440, conductive sheet 450, insulating fastener 460, and conductive shell 600 are also adapted to cylindrical batteries. In some embodiments, such as Figure 8As shown, the conductive sheet 450 is a circular metal sheet. In other embodiments, the battery cell 500 is a rectangular battery cell, and the battery 100 is a corresponding rectangular battery. Other embodiments follow the same principle and will not be elaborated further. This structural design has several advantages. First, when both the battery cell 500 and the battery 100 are cylindrical, the insulating sheet 300, the protective circuit board 410, the insulating support 430, and other structural components are designed to fit the cylindrical battery specifications. For example, the conductive sheet 450, being a circular metal sheet, can achieve a tight conductive connection with the positive electrode 510 of the cylindrical battery cell through shape matching. Simultaneously, each annular structural component can evenly distribute assembly stress, avoiding damage to the battery cell 500 caused by localized compression. Second, when the battery cell 500 is rectangular, the structural components are simultaneously adjusted to a rectangular or square design to ensure the relative positional accuracy between the protective circuit assembly 400 and the battery cell 500, maintaining the stability of the protective circuit board 410's connection to the positive electrode 510 of the battery cell via the conductive post 420. On the other hand, this modular adaptability design not only ensures the assembly compatibility of battery cells of different shapes with battery casings, but also enhances the reliability of conductive connections through structural component shape matching. At the same time, the supporting and isolating effect of the insulating bracket 430 reduces the direct impact of external impact on the battery cell 500, further improving the safety of the battery 100 in different forms and the working stability of the protection circuit.

[0054] As an example, such as Figure 6 As shown, the insulating sheet 300 is disposed on the opening 650 of the conductive housing 600 to cooperate with the positive electrode cap 200 to seal the opening 650; as Figure 3 As shown, the positive electrode cap 200 passes through the insulating sheet 300 to connect to the protection circuit assembly 400, and is connected to the positive electrode 510 of the battery cell 500 through the protection circuit assembly 400; the protection circuit assembly 400 and the battery cell 500 are both housed in the mounting cavity 640 of the conductive housing 600, and the negative electrode 520 of the battery cell 500 is connected to the conductive housing 600. Figure 3 and Figure 4In the illustrated embodiment, the protection circuit assembly 400 or its conductive sheet 450 can achieve conductivity through a flexible conductive line or columnar conductor (not shown in the figure). For example, the protection circuit assembly 400 or its conductive sheet 450 has a conductive protrusion (not shown in the figure). When the protection circuit assembly 400 or its conductive sheet 450 is installed in the mounting cavity 640 or its first region 641, the conductive protrusion abuts against the positive electrode 510 of the battery cell, so that the positive electrode cap 200 is electrically connected to the positive electrode 510 of the battery cell through the protection circuit board 410 and other structural components. With this structural design, the battery 100 can be used as a single battery. The protection circuit design of the battery is achieved through the cooperation of the positive electrode cap 200, insulating sheet 300, protection circuit assembly 400, battery cell 500, and conductive shell 600. For example, it can prevent abnormal conditions such as overcharging, over-discharging, overcurrent, and short circuits during use, thereby extending the service life of the battery 100 and ensuring safe use.

[0055] To protect the conductive housing 600 and prevent leakage, in some embodiments, such as Figure 4 and Figure 7 As shown, the battery 100 further includes an insulating protective layer 700, which covers the conductive outer casing 600. As an example, the insulating protective layer 700 is a plastic film layer. In embodiments with an opening 650, the insulating protective layer 700 does not cover the opening 650; in embodiments with a dent 670, the insulating protective layer 700 does not cover the dent 670, or the insulating protective layer 700 is thinned at the dent 670 to reduce resistance to deformation of the dent 670 when it deforms, i.e., it does not affect the deformation of the dent 670. It is understood that in embodiments without an insulating protective layer 700, the battery 100 can be placed in an insulating environment, or the conductive outer casings 600 of multiple batteries 100 can be electrically connected. This structural design, on the one hand, effectively protects the conductive outer shell 600 from external physical damage by setting an insulating protective layer 700 over the conductive outer shell 600 in the battery 100, while isolating the outer shell from direct electrical contact with the outside world, avoiding the risk of leakage and improving battery safety. On the other hand, the insulating protective layer 700 uses insulating materials such as plastic film layers, with adaptable solutions for different structural designs, making it economical, practical, and easy to implement. Furthermore, for embodiments with an opening 650, leaving the opening 650 uncovered ensures that the assembly and conductivity of components such as the positive electrode cap 200 are not affected. Moreover, for embodiments with a protrusion 670, leaving the protrusion 670 uncovered or thinning it at that location maintains the insulating protection effect while reducing the obstruction to the deformation of the protrusion 670, ensuring its normal operation even when deformation is required, without affecting the structural stability and functionality of the battery.

[0056] In each embodiment, such as Figure 3 and Figure 5 As shown, the protection circuit assembly 400 and the battery cell 500 are both housed in the mounting cavity 640 of the conductive housing 600, and the negative terminal 520 of the battery cell 500 is connected to the conductive housing 600. It should be noted that in each embodiment, the circuit connections are conductive connections, and this application does not impose additional limitations on this aspect. As an example, the protection circuit assembly 400 or its protection circuit board 410 is provided with a voltage detection circuit, a current detection circuit, and a logic control circuit, etc. The voltage detection circuit is used to monitor the voltage of the battery 100 in real time to determine whether the battery 100 is in an overcharged or over-discharged state; the current detection circuit is used to detect the charging and discharging current of the battery 100 to determine whether the battery 100 has an overcurrent or short circuit. The logic control circuit is used to make corresponding control decisions based on the signals from the voltage detection circuit and the current detection circuit, such as cutting off the charging or discharging circuit, to achieve functions such as overcharge protection, over-discharge protection, overcurrent protection, short circuit protection, and temperature protection. This structural design creates a compact and stable circuit structure. The voltage detection circuit integrated on the protection circuit board 410 can monitor the battery 100 voltage in real time and accurately determine overcharge or over-discharge states. The current detection circuit can detect abnormal charging and discharging currents and quickly identify overcurrent or short circuit conditions. The logic control circuit, based on the signals from the former two circuits, promptly cuts off the charging and discharging circuit, realizing functions such as overcharge, over-discharge, overcurrent, short circuit, and temperature protection. This design, through the coordinated operation of multiple circuits, can not only dynamically monitor the battery's operating status but also actively intervene in abnormal situations, effectively preventing safety hazards caused by abnormal electrical parameters of the battery 100. At the same time, relying on the reliability of conductive connections and the integrated layout of the protection circuit components 400, it ensures the stability of the battery 100 during charging and discharging, extends the battery 100's service life, and improves the battery 100's safety in use.

[0057] In each embodiment, such as Figure 4 and Figure 7 As shown, the protection circuit assembly 400 includes a protection circuit board 410, a conductive post 420, and an insulating support 430. The protection circuit board 410 is disposed on the insulating support 430 and located between the insulating sheet 300 and the insulating support 430. As an example, the protection circuit board 410 is connected to the conductive post 420 by abutment or soldering. Figure 4 The positive electrode cap 200 passes through the insulating sheet 300 and connects to the first side of the protective circuit board 410. The second side of the protective circuit board 410 is connected to the positive electrode 510 of the battery cell 500 via the conductive post 420. Figure 6As shown, the insulating sheet 300 is disposed on the opening 650 of the conductive shell 600 to cooperate with the positive electrode cap 200 to seal the opening 650. This structural design serves two purposes: firstly, the protective circuit board 410 is positioned and supported by the insulating support 430, which is located between the insulating sheet 300 and the insulating support 430. The insulating support 430 can isolate external impacts, helping to prevent the protective circuit board 410 from directly compressing the battery cell 500. Secondly, the protective circuit board 410 and the conductive post 420 are electrically connected by abutment or welding, ensuring reliable current transmission. The first side of the protective circuit board 410 passes through the insulating sheet 300 via the positive electrode cap 200 to achieve external electrical connection, and the second side of the protective circuit board 410 is connected to the positive electrode 510 of the battery cell via the conductive post 420, forming a conductive path of the positive electrode cap 200, the protective circuit board 410, the conductive post 420, and the positive electrode 510 of the battery cell, ensuring circuit connection stability. On the other hand, the insulating sheet 300, together with the positive electrode cap 200, seals the opening 650 of the conductive outer shell 600, which can not only isolate the internal components from the external electrical contact, but also reduce the direct impact of external forces on the cell 500 through the support of the insulating bracket 430, thereby improving the safety of the battery 100 and the reliability of the circuit connection.

[0058] To improve connection stability and prevent electrical breaks due to collisions, in some embodiments, such as Figure 4 and Figure 8 As shown, the protection circuit assembly 400 further includes a conductive latch 440, a conductive sheet 450, and an insulating fastener 460; the conductive latch 440 abuts against the conductive sheet 450 and is disposed within the insulating fastener 460; the conductive latch 440 engages with the conductive post 420, and the conductive sheet 450 is connected to the positive electrode 510 of the battery cell; the insulating fastener 460 is disposed between the insulating support 430 and the battery cell 500, and has gaps between itself and both the insulating support 430 and the battery cell 500. Figure 8In the illustrated embodiment, the conductive latch 440 and the conductive sheet 450 are separately configured structural components. In some embodiments, the conductive latch 440 and the conductive sheet 450 are integrally configured. In some embodiments, the conductive latch 440 is an elastic latch structure to further improve the stability of the conductive connection. This structural design, on the one hand, by adding the conductive latch 440, the conductive sheet 450, and the insulating fixing member 460 to the protection circuit assembly 400, can significantly improve the stability of the circuit connection; wherein, the conductive latch 440 is engaged with the conductive post 420, and with the elastic latch structure design, it can compensate for displacement caused by collision through elastic deformation, and maintain close contact with the conductive post 420 continuously; the conductive sheet 450 is conductively connected to the positive electrode 510 of the battery cell, and the two are positioned as a whole structural component by the insulating fixing member 460, forming a dual conductive path of the latch and the conductive sheet, reducing the risk of poor contact. On the other hand, the insulating fastener 460, positioned in the gap between the insulating bracket 430 and the battery cell 500, not only prevents component displacement through limiting but also buffers external impact forces, preventing the conductive connection from loosening or breaking due to collisions. Furthermore, when the conductive clip 440 and the conductive sheet 450 are integrated, assembly steps and contact interfaces are reduced, further improving structural reliability; while a separately designed structure can flexibly adapt to different specifications of battery cells 500, ensuring the stability of the conductive connection and the vibration resistance of the battery 100, effectively guaranteeing the normal operation of the protection circuit under complex working conditions.

[0059] To more securely assemble the conductive post 420 into place, in some embodiments, such as Figure 5 and Figure 8As shown, the conductive post 420 has a groove 421, and the conductive latching member 440 has a pawl 441 that matches the groove 421; the conductive latching member 440 engages with the groove 421 of the conductive post 420 via the pawl 441. This structural design, on the one hand, ensures a stable assembly of the conductive post 420 by providing the groove 421 on the conductive post 420 and the matching pawl 441 on the conductive latching member 440 within the protection circuit assembly 400. On the other hand, this latching structure utilizes a mechanical interlocking principle to create a rigid connection between the conductive latching member 440 and the conductive post 420, preventing axial displacement of the conductive post 420 when the battery 100 is subjected to vibration or impact, and avoiding poor conductive contact due to loose assembly. On the other hand, the matching design of the pawl 441 and the groove 421 can accurately position the conductive post 420, ensuring that it is aligned with the conductive connection axis of the protection circuit board 410 and the positive electrode 510 of the battery cell, thereby improving the stability of current transmission. Moreover, this snap-fit ​​method does not require additional welding or glue fixation, which simplifies the assembly process and enhances the structural reliability through mechanical interlocking. It effectively avoids the risk of conductive circuit breakage caused by loose assembly, thereby ensuring the circuit connection stability and safety of the battery 100 during long-term use.

[0060] To more accurately position and assemble the conductive post 420, in some embodiments, such as Figure 4 and Figure 8As shown, the insulating bracket 430 is provided with a support guide structure 431, and the support guide structure 431 has a limiting hole 432. The support guide structure 431 is configured to guide the conductive post 420 through the limiting hole 432 so that the conductive post 420 can engage with the conductive fastener 440. This structural design, on the one hand, by setting the support guide structure 431 and the limiting hole 432 on the insulating bracket 430, allows for precise positioning and assembly of the conductive post 420. The limiting hole 432 of the support guide structure 431 provides axial guidance for the conductive post 420, ensuring that it passes through along a preset path and engages with the conductive fastener 440, avoiding offset or tilting during assembly. This ensures that the conductive post 420 is aligned with the conductive connection axis of the protection circuit board 410 and the positive electrode 510 of the battery cell, improving the accuracy and stability of the circuit connection. On the other hand, this guide structure 431, through the matching design of the aperture of the limiting hole 432 and the outer diameter of the conductive post 420, forms a precise positioning reference. This not only assists the conductive post 420 in quickly aligning and snapping into position during assembly, but also restricts the radial displacement of the conductive post 420 during use of the battery 100, reducing the risk of connection loosening due to external forces such as vibration. Furthermore, this structural design eliminates the need for additional positioning components, achieving precise guidance through the structural features of the insulating bracket 430 itself. This simplifies the assembly process while enhancing the reliability of the conductive post 420 assembly, thereby ensuring the stability of the conductive connection between the protection circuit assembly 400 and the cell 500, and the safety of the battery 100 in use.

[0061] In some of these embodiments, such as Figure 5 and Figure 9As shown, the conductive housing 600 has a shell 630, which has a mounting cavity 640 and an opening 650 communicating with the mounting cavity 640. The shell 630 has a first elastic protrusion 610 and a second elastic protrusion 620 protruding towards the interior of the mounting cavity 640. It can be understood that the elastic protrusions, including the first elastic protrusion 610 and the second elastic protrusion 620, are elastic relative to each other, allowing them to return to their original position after assembling structural components such as the battery cell 500. The protrusions are relative to the inner wall of the shell 630 or the mounting cavity 640, and are groove-shaped relative to the outer wall of the shell 630. Therefore, the first elastic protrusion 610 can also be called a first recessed groove, and the second elastic protrusion 620 can also be called a second recessed groove. This structural design allows the first elastic protrusion 610 and the second elastic protrusion 620 protruding towards the mounting cavity 640 of the conductive housing 600 to securely clamp the battery cell 500 by means of their elastic deformation characteristics. On the other hand, during assembly, the elastic protrusion deforms under the pressure of the cell 500, and then, through a restoring force, tightly abuts against the outer wall of the cell 500. This prevents the cell 500 from shifting or moving within the mounting cavity 640, and also buffers the direct impact of external vibrations or shocks on the cell 500, reducing the risk of loosening of internal conductive connections due to structural collisions. Furthermore, the recessed groove design corresponding to the outer wall of the casing 630 not only facilitates structural demolding during mold forming, but also serves as an assembly positioning marker, assisting in the precise alignment of the cell 500 and the protection circuit assembly 400. Moreover, this internal and external relative structure of the elastic protrusion and recessed groove enhances the assembly stability of the internal components of the battery 100 through mechanical clamping, and improves the vibration resistance of the battery 100 under complex operating conditions through elastic buffering, while not affecting the reliability of the conductive connection between the conductive casing 600 and the negative electrode 520 of the cell, further ensuring the safety and structural durability of the battery 100.

[0062] As an example, specifically, combining Figure 4 and Figure 6The first elastic protrusion 610 and the second elastic protrusion 620 respectively abut against the insulating fastener 460 to confine the insulating fastener 460 within a first region 641 of the mounting cavity 640; the first elastic protrusion 610 also abuts against the battery cell 500 to confine the battery cell 500 within a second region 642 of the mounting cavity 640; the second elastic protrusion 620 also abuts against the insulating support 430 to confine the insulating support 430 within a third region 643 of the mounting cavity 640. In some embodiments, the first elastic protrusion 610 and the second elastic protrusion 620 are both protrusions or protruding rings. This structural design, on the one hand, achieves layered confinement of the first elastic protrusion 610 and the second elastic protrusion 620 of the conductive housing 600 by abutting against different components, significantly improving the assembly stability of the internal structure of the battery 100. On the other hand, the precise division of the three regions prevents axial or radial displacement of the components within the mounting cavity 640. On the other hand, the elastic deformation characteristics of the elastic protrusion allow it to generate a restoring force after being squeezed during assembly. This not only tightly clamps the component to buffer external vibration and impact, but also ensures the relative positional accuracy of the protection circuit component 400 and the cell 500 through mechanical limiting, maintaining the conductive connection stability between the conductive post 420 and the positive electrode 510 of the cell. Furthermore, when the elastic protrusion adopts a protrusion block or protruding ring structure, it can be adapted to cylindrical or rectangular batteries of different specifications. The limiting effect is enhanced through ring or point abutment, further avoiding the risk of conductive open circuit due to component loosening, and ensuring the safety and structural durability of the battery 100 under complex working conditions.

[0063] To improve the pressure relief capability of the conductive housing 600, in some embodiments, such as Figure 3As shown, the end of the housing 630 furthest from the opening 650 is provided with a convex feature 670, that is, the non-opening end of the conductive housing 600 has a convex feature, which deforms and releases pressure in a directional manner when the internal pressure is too high, so as to prevent explosion. This structural design, on the one hand, by providing the convex feature 670 at the end of the housing 630 furthest from the opening 650, can significantly improve the pressure relief capability of the battery 100; for example, when the internal pressure of the battery suddenly increases due to abnormal conditions such as overcharging or short circuit, the convex feature 670, as a pre-designed weak structure, will preferentially deform and rupture, forming a directional pressure relief channel, allowing the internal high-pressure gas to be released along the non-opening end, avoiding pressure concentration that could lead to an explosion. On the other hand, this design utilizes the structural characteristics of the convex feature 670 to transform the risk of explosion into a controllable pressure relief process. Simultaneously, by releasing pressure at the non-opening end, the impact of high-pressure gas on top precision components such as the positive electrode cap 200 and the protection circuit assembly 400 can be reduced, lowering the probability of circuit damage. On the other hand, the setting of the bump 670 does not affect the conductive connection between the conductive outer shell 600 and the negative electrode 520 of the battery cell, and the insulating protective layer 700 is thinned or not covered at the bump 670 to ensure that its deformation pressure relief function is not hindered.

[0064] To better position the protective circuit assembly 400 or its insulating support 430, in some embodiments, such as Figure 6 and Figure 9 As shown, the end of the housing 630 near the opening 650 is provided with a rolled edge limiting structure 660. The rolled edge limiting structure 660 abuts against the insulating bracket 430 to limit the insulating bracket 430 between the rolled edge limiting structure 660 and the second elastic protrusion 620. This structural design, on the one hand, by providing the rolled edge limiting structure 660 at the end of the housing 630 near the opening 650 of the conductive housing 600, can effectively achieve precise positioning and stable assembly of the insulating bracket 430 in the protection circuit assembly 400. On the other hand, the rolled edge limiting structure 660 abuts against the insulating bracket 430, forming an upper and lower limiting interval with the second elastic protrusion 620, limiting the insulating bracket 430 between the two, preventing axial displacement within the mounting cavity 640, ensuring the relative positional accuracy of components such as the protection circuit board 410 and conductive post 420 with the battery cell 500, and helping to maintain the stability of the conductive path. On the other hand, the rolled edge limiting structure 660, through the synergistic effect of mechanical limiting and the clamping force of the elastic protrusion, can not only assist the insulating bracket 430 in quick positioning during assembly, but also reduce component shaking through rigid limiting when the battery 100 is subjected to vibration or impact, thereby reducing the risk of loosening of conductive connections due to structural displacement. Furthermore, the rolled edge limiting structure 660, in conjunction with the insulating sheet 300 and the positive electrode cap 200 at the opening 650, further enhances the sealing performance and structural stability of the outer casing opening, which is beneficial for ensuring the safe operation of the internal components of the battery 100 and improving overall reliability.

[0065] The following will continue to combine Figures 1 to 9 Examples are provided below. In some embodiments, the battery 100 includes a positive electrode cap 200, an insulating sheet 300, a protective circuit board 410, a conductive post 420, an insulating bracket 430, a conductive fastener 440, a conductive sheet 450, an insulating fastener 460, a battery cell 500, a conductive outer shell 600, and an insulating protective layer 700, etc.

[0066] Specifically, one end of the conductive outer shell 600 has an opening 650 through which the positive electrode cap 200 passes; the other end of the conductive outer shell 600 is electrically connected to the negative electrode 520 of the battery cell 500. An insulating sheet 300 is provided between the positive electrode cap 200 and the conductive outer shell 600 to isolate the positive and negative electrodes of the battery cell 500.

[0067] One side of the protective circuit board 410 is connected to the positive electrode cap 200, and the other side has a conductive post 420, or a protruding conductive post 420, or is connected to a conductive post 420. The conductive post 420 is connected to a conductive latch 440, and the conductive latch 440 is engaged in the groove 421 at the end of the conductive post 420, preventing the conductive post 420 from falling off. The conductive latch 440 and the conductive sheet 450 are tightly abutted and installed inside the insulating fastener 460. The conductive sheet 450 is connected to the positive electrode 510 of the battery cell 500 through a flexible conductor.

[0068] The conductive housing 600 has a first elastic protrusion 610. One side of the first elastic protrusion 610 abuts tightly against the battery cell 500, confining the battery cell 500 inside the conductive housing 600; the other side contacts the insulating fastener 460.

[0069] The conductive housing 600 also has a second elastic protrusion 620. One side of the second elastic protrusion 620 is in close contact with the side of the insulating fastener 460 away from the first elastic protrusion 610, that is, the first elastic protrusion 610 and the second elastic protrusion 620 restrict the insulating fastener 460 above the positive electrode 510 of the battery cell 500. The other side of the second elastic protrusion 620 is in contact with the insulating support 430. The insulating support 430 is used to support the protective circuit board 410.

[0070] The conductive outer shell 600 is also covered with an insulating protective layer 700, which is used to protect the battery cell 500, prevent short circuits and leakage, reduce the self-discharge of the battery 100, and isolate it from the external environment.

[0071] As an example, the insulating bracket 430 also has a support guide structure 431 with a limiting hole 432 in the middle for limiting the installation direction of the conductive post 420 so that the conductive post 420 accurately contacts and electrically connects with the conductive buckle 440.

[0072] As an example, the end of the conductive housing 600 near the opening 650 has a rolled edge limiting structure 660 that restricts the protective circuit board 410 above the insulating support 430 so that it cannot move.

[0073] As an example, the non-opening end of the conductive housing 600 is provided with a convex part 670, that is, the non-opening end of the conductive housing 600 has a convex feature, which can effectively prevent excessive internal pressure of the battery 100, thereby reducing the risk of leakage and explosion.

[0074] As an example, the conductive latch 440 is elastic, ensuring that it remains stably connected to the conductive post 420 in the event of a drop or other impact to protect the circuit. The conductive latch 440 has two or more pawls 441, which can firmly grip the groove 421 at the end of the conductive post 420 to prevent the conductive post 420 from loosening and falling off.

[0075] This type of battery 100 has advantages such as a robust structure, more stable protection circuit, and higher safety.

[0076] It should be noted that other embodiments of this application also include implementable batteries formed by combining the technical features of the above embodiments.

[0077] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A battery (100), characterized in that, It includes a positive electrode cap (200), an insulating sheet (300), a protection circuit assembly (400), a battery cell (500), and a conductive outer shell (600). The protection circuit assembly (400) and the battery cell (500) are both housed in the mounting cavity (640) of the conductive housing (600), and the negative terminal (520) of the battery cell (500) is connected to the conductive housing (600). The protection circuit assembly (400) includes a protection circuit board (410), a conductive post (420), and an insulating support (430). The protection circuit board (410) is disposed on the insulating support (430) and is located between the insulating sheet (300) and the insulating support (430). The positive electrode cap (200) passes through the insulating sheet (300) and is connected to the first side of the protection circuit board (410). The second side of the protection circuit board (410) is connected to the positive electrode (510) of the battery cell (500) through the conductive post (420). The insulating sheet (300) is disposed on the opening (650) of the conductive shell (600) to cooperate with the positive electrode cap (200) to seal the opening (650).

2. The battery (100) according to claim 1, characterized in that, The protection circuit assembly (400) also includes a conductive latch (440), a conductive sheet (450), and an insulating fastener (460). The conductive buckle (440) abuts against the conductive sheet (450) and is both disposed in the insulating fastener (460); The conductive buckle (440) is engaged with the conductive post (420), and the conductive sheet (450) is connected to the positive electrode (510) of the battery cell. The insulating fastener (460) is disposed between the insulating bracket (430) and the battery cell (500), and has gaps with both the insulating bracket (430) and the battery cell (500).

3. The battery (100) according to claim 2, characterized in that, The conductive post (420) is provided with a groove (421), and the conductive fastener (440) is provided with a pawl (441) that is adapted to the groove (421). The conductive fastener (440) engages with the groove (421) of the conductive post (420) via the pawl (441).

4. The battery (100) according to claim 3, characterized in that, The insulating bracket (430) is provided with a support guide structure (431), and the support guide structure (431) has a limiting hole (432). The support guide structure (431) is configured to guide the conductive post (420) through the limiting hole (432) so that the conductive post (420) engages with the conductive fastener (440); or, The conductive fastener (440) is integrally formed with the conductive sheet (450); or, The conductive sheet (450) is a circular metal sheet; or, The conductive buckle (440) is an elastic buckle structure.

5. The battery (100) according to claim 2, characterized in that, The conductive outer shell (600) is provided with a housing (630), and the housing (630) has the mounting cavity (640) and the opening (650) communicating with the mounting cavity (640). The housing (630) has a first elastic protrusion (610) and a second elastic protrusion (620) protruding into the mounting cavity (640). The first elastic protrusion (610) and the second elastic protrusion (620) respectively abut against the insulating fastener (460) to limit the insulating fastener (460) to a first region (641) of the mounting cavity (640). The first elastic protrusion (610) also abuts against the battery cell (500) to confine the battery cell (500) to a second region (642) of the mounting cavity (640). The second elastic protrusion (620) also abuts against the insulating bracket (430) to confine the insulating bracket (430) to a third region (643) of the mounting cavity (640).

6. The battery (100) according to claim 5, characterized in that, Both the first elastic protrusion (610) and the second elastic protrusion (620) are protrusions or protruding rings.

7. The battery (100) according to claim 5, characterized in that, The end of the housing (630) away from the opening (650) is provided with a protrusion (670).

8. The battery (100) according to claim 5, characterized in that, The end of the housing (630) near the opening (650) is provided with a rolled edge limiting structure (660), which abuts against the insulating bracket (430) to limit the insulating bracket (430) between the rolled edge limiting structure (660) and the second elastic protrusion (620).

9. The battery (100) according to claim 1, characterized in that, The cell (500) is a cylindrical cell, and the battery (100) is a cylindrical battery.

10. The battery (100) according to any one of claims 1 to 9, characterized in that, The battery (100) also includes an insulating protective layer (700) which covers the conductive outer casing (600).

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