Adapter assembly, battery and powered device

Abstract

This invention discloses an adapter assembly including an adapter and a coil. The adapter is used to connect the terminal post and the tab. The coil is sleeved on at least a portion of the adapter and is a closed loop formed by multiple consecutive single turns connected end-to-end. The coil and the adapter are insulated from each other. As can be seen, by setting the coil on the adapter, when the battery is operating at a large current, the magnetic field on the adapter increases, causing a change in the magnetic field passing through the coil. The coil, due to its impedance, can impede the increase in current, slowing down the rate of current increase and thus mitigating the impact of current on the battery. Furthermore, the increased magnetic field can generate current within the coil, causing the coil to heat the connecting piece, accelerating the temperature rise and melting process of the adapter. Due to the auxiliary effect of the coil on the melting of the adapter, the cross-section of the melting portion of the adapter can be maximized during normal use.

Description

Technical Field

[0001] This invention relates to the field of batteries, and more specifically to an adapter, a battery, and an electrical device. Background Technology

[0002] In existing technologies, to improve battery performance, safety, and reliability, adapter plates are typically used to connect the terminals and tabs. To ensure battery safety, when the operating current becomes abnormal and exceeds a predetermined value, the internal resistance of the adapter plate needs to be as high as possible to generate as much heat as possible, allowing the adapter plate to melt quickly and break the circuit. Therefore, adapter plates usually have a fusible link with a smaller current-carrying area than other parts and a higher resistance. When a short circuit occurs in the battery, the current increases, and the fusible link generates a large amount of heat to melt the adapter plate and thus break the circuit. However, with the increasing demands for battery energy conversion efficiency, the internal resistance of the battery needs to be as low as possible. This contradicts the high resistance of the fusible link, affecting the battery's safety performance.

[0003] Therefore, how to balance the high energy conversion rate and safety performance of batteries is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide an adapter that can solve the problems of high energy conversion efficiency and safety performance of batteries.

[0005] An adapter component, comprising:

[0006] Adapter for connecting pole posts and pole tabs;

[0007] A coil is fitted onto at least a portion of the adapter, the coil being a closed loop formed by multiple consecutive single turns connected end to end, and the coil and the adapter being insulated from each other.

[0008] Optionally, in the above-described adapter assembly, a cavity is formed inside the coil to allow a portion of the adapter structure to pass through, wherein the angle between the axial direction of the cavity and the current direction on the adapter is greater than or equal to 0° and less than 90°.

[0009] Optionally, in the above-described adapter assembly, the adapter includes a pole connection portion, at least one fuse portion, and a tab connection portion connected sequentially along a first direction.

[0010] At least one of the fuse portions is connected between the pole post connection portion and the tab connection portion, and along the second direction, the size of the fuse portion is smaller than the size of at least one of the pole post connection portion and the tab connection portion, the coil is sleeved on at least one of the fuse portions, and the second direction is a direction perpendicular to the first direction and lies in the plane of the fuse portion.

[0011] Optionally, in the above-mentioned adapter assembly, the fuse portion includes at least two, an opening is provided between two adjacent fuse portions, and the coil is at least sleeved on the fuse portion with the smallest dimension along the second direction.

[0012] Optionally, in the above-described adapter assembly, the coil is insulated between two adjacent single turns.

[0013] Optionally, the above-mentioned adapter assembly further includes an insulating bracket disposed between the coil and the adapter to prevent the coil from contacting the adapter.

[0014] Optionally, in the above-described adapter assembly, a receiving groove for accommodating a single turn and continuously provided is provided on the contact surface between the insulating support and the coil.

[0015] Optionally, in the above-described adapter assembly, the insulating support includes:

[0016] The first part has a through hole, and a portion of the structure of the adapter passes through the through hole;

[0017] The second part is sleeved on the outside of the first part, and the coil is wound around the outer surface of the second part;

[0018] The third part has two ends connected to the side of the hole wall of the first part away from the adapter and the side of the second part away from the coil, respectively.

[0019] Optionally, in the above-described adapter assembly, the second part for winding the coil has a receiving groove on its side for accommodating a single turn and being continuous.

[0020] The dimension of the receiving groove along the axial direction of the coil is the same as the diameter of the coil wire.

[0021] A battery includes a terminal post, a tab, and an adapter assembly connecting the terminal post and the tab.

[0022] An electrical device includes the aforementioned battery.

[0023] As can be seen from the above technical solution, by setting a coil on the adapter piece, when the battery is under a large current, the magnetic field on the adapter piece increases, causing a change in the magnetic field passing through the coil. Due to its impedance, the coil can impede the increase of current, slowing down the rate of current increase, thereby reducing the impact of current on the battery. Furthermore, the increased magnetic field can generate current in the coil, causing the coil to generate heat and heat the connecting piece, which can accelerate the temperature rise and melting process of the adapter piece. Due to the auxiliary effect of the coil on the melting of the adapter piece, the melting part of the adapter piece can maximize the cross-sectional area during normal use, ensuring the battery can withstand overcurrent under normal conditions. When the battery is short-circuited, the coil can accelerate the melting, ensuring safety. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 An exploded view of a battery provided in an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of the structure of the adapter component provided in the embodiment of the present invention. Figure 1 ;

[0027] Figure 3 A schematic diagram of the structure of the adapter component provided in the embodiment of the present invention. Figure 2 ;

[0028] Figure 4 A schematic diagram of the structure of the adapter component provided in the embodiment of the present invention. Figure 3 ;

[0029] Figure 5 A schematic diagram of the structure of the adapter component provided in the embodiment of the present invention. Figure 4 ;

[0030] Figure 6 This is a schematic diagram of the coil structure provided in an embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of the insulating support provided in an embodiment of the present invention.

[0032] in:

[0033] 1. Adapter; 11. Terminal post connection; 12. Fuse; 121. Opening; 13. Lug connection;

[0034] 2. Pole post; 3. Pole tab; 4. Coil; 41. Cavity;

[0035] 5. Insulating support; 51. First part; 511. Through hole; 52. Second part; 521. Receiving groove; 53. Third part;

[0036] 6. Battery cell; 7. Housing; 8. Cover plate. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] In the description of the invention, it should be noted that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] like Figures 1 to 7 As shown, this embodiment of the invention provides an adapter that can balance the high energy conversion rate and safety performance of a battery.

[0040] First, the adapter assembly includes an adapter 1 and a coil 4. The adapter 1 connects the pole post 2 and the tab 3. The coil 4 is fitted onto at least a portion of the adapter 1. The coil 4 is a closed loop formed by multiple consecutive single turns connected end-to-end. The coil 4 and the adapter 1 are insulated from each other to prevent the coil 4 from being connected to a circuit, making the coil 4 an independent structural component. The insulation method includes, but is not limited to, covering the coil 4 with an insulating coating or insulating sheath, or the coil 4 is not insulated, with a gap between the coil 4 and the adapter 1. It should be noted that when the coil 4 is covered with an insulating coating, the insulation layer thickness is >3μm. To avoid current interference and other problems between the adapter 1 and the coil 4, effective insulation measures are taken between them to ensure the safety and stability of the adapter assembly.

[0041] As can be seen, by setting a coil 4 on the adapter 1, when the battery is at a large current, the magnetic field on the adapter 1 increases, causing the magnetic field through the coil 4 to change. The coil 4, due to its impedance, can impede the increase of current and slow down the rate of current increase, thereby reducing the impact of current on the battery. Furthermore, the increase in magnetic field can generate current in the coil 4, causing the coil 4 to generate heat and heat the connecting piece, which can accelerate the temperature rise and melting process of the adapter 1. Due to the auxiliary effect of the coil 4 on the melting of the adapter 1, the cross-section of the melting part 12 of the adapter 1 can be increased as much as possible during normal use.

[0042] In specific implementation, a cavity 41 is formed inside the coil 4, allowing a portion of the structure of the adapter 1 to pass through. The angle between the axis of the cavity 41 and the current direction on the adapter 1 is greater than or equal to 0° and less than 90°. This angle setting (greater than or equal to 0° and less than 90°) has significant physical implications. When the angle is 0°, the current flow direction in the adapter 1 is completely aligned with the axis of the cavity 41. At this point, the magnetic field distribution is most regular, minimizing energy loss and electromagnetic interference. As the angle gradually increases, but always remains less than 90°, although the magnetic field distribution changes somewhat, the basic performance of the adapter component is still guaranteed. Furthermore, in certain specific applications, this angle can be adjusted to achieve flexible control of electromagnetic characteristics. It should be noted that the internal contour of the coil 4 includes, but is not limited to, a circular structure; it can also be an ellipse, square, or other irregular shapes.

[0043] In specific implementation, the adapter 1 includes a pole post connecting part 11, at least one fuse part 12 and a tab connecting part 13 connected sequentially along a first direction. At least one fuse part 12 is connected between the pole post connecting part 11 and the tab connecting part 13. Along the second direction, the size of the fuse part 12 is smaller than the size of at least one of the pole post connecting part 11 and the tab connecting part 13. That is, the fuse part 12 on the adapter 1 is narrowed relative to the pole post connecting part 11 or the tab connecting part 13. The coil 4 is sleeved on the fuse part 12. On the one hand, the adapter 1 itself can generate heat. On the other hand, the coil 4 can be heated. The combined effect of the two makes the fuse part 12 of the adapter 1 respond to the fuse in time. A coil 4 is fitted onto at least one fuse portion 12. The second direction is within the plane of the fuse portion 12 and perpendicular to the first direction. This ensures that the coil 4 is positioned at a narrower section of the transition piece 1, where the resistance is higher and more heat is generated. Simultaneously, the increased magnetic field induces a current within the coil 4, causing it to heat the narrow section of the transition piece 1, thus accelerating the temperature rise and melting of the transition piece 1. One, two, or more fuse portions 12 can be provided. Figure 2As shown, when one fuse part 12 is provided, the coil 4 is sleeved on the fuse part 12; when two or more fuse parts 12 are provided, each fuse part 12 can be provided one-to-one; or, it can be provided only on some fuse parts 12. It should be noted that detailed schematics of the first and second directions are shown in [reference needed]. Figure 2 The second direction is the direction of current flow.

[0044] In specific implementation, the fusible part 12 includes at least two parts, and an opening 121 is provided between two adjacent fusible parts 12. The coil 4 is at least sleeved on the fusible part 12 with the smallest dimension along the second direction. When the coil 4 is provided on one or part of the multiple fusible parts 12, the coil 4 generates heat to heat the fusible part 12 on which the coil 4 is provided, causing it to melt quickly. After melting, it accelerates the melting speed of other fusible parts 12 without coil 4. The effect is best when the coil 4 is placed on the narrowest fusible part 12. After the coil 4 melts the narrowest fusible part 12, the overall internal resistance increases, which can accelerate the melting of other fusible parts 12.

[0045] When a coil 4 is provided on each fuse part 12, each fuse part 12 can be heated and melted. For example... Figure 3 As shown, taking an example with three fuse sections 12, each fuse section 12 is equipped with a coil 4 in a one-to-one configuration; as shown Figure 4 As shown, one of the three fuse parts 12 is equipped with a coil 4.

[0046] In practice, insulation is provided between adjacent single turns in coil 4. During the manufacturing of coil 4, each single turn is wound from a material with good conductivity. However, if effective insulation is not applied between adjacent single turns, short circuits can easily occur, leading to a series of serious problems. These can range from minor issues like decreased equipment performance affecting normal operation to more serious problems such as fires and explosions, posing a significant threat to life and property. To achieve insulation between adjacent single turns, firstly, conductors with an insulating coating are selected when winding coil 4. The insulating coating effectively prevents current leakage between adjacent single turns. The coating material typically possesses good insulation properties, high-temperature resistance, and chemical stability. In addition to the insulating coating on the conductor itself, extra insulating material is added between adjacent single turns. This insulating material can be insulating paper, insulating film, etc., which is evenly laid between adjacent single turns to further enhance the insulation effect. During the laying process, the thickness and uniformity of the insulating material must be strictly controlled to ensure consistent insulation performance. In addition, gaps can be left between adjacent single turns in coil 4 to ensure that there is no continuity in the middle of coil 4, so that each single turn of coil 4 can independently cut the magnetic field.

[0047] In specific implementation, an insulating support 5 is also included. The insulating support 5 is disposed between the coil 4 and the adapter 1 to prevent the coil 4 from contacting the adapter 1. The insulating support 5 is partially disposed between the coil 4 and the adapter 1, and this partial placement supports the coil 4, creating a gap between the coil 4 and the adapter 1 for insulation; alternatively, the insulating support 5 is entirely disposed between the adapter 1 and the coil 4, with the inner surface of the coil 4 insulated from the adapter 1 by the insulating support 5. The insulating support 5 uses a low-melting-point material, such as PP or PET. After the cell 6 experiences thermal runaway at high temperatures, the insulating support 5 melts, creating raised, charred insulating material on the adapter 1, which lifts the tab 3 to prevent it from overlapping on the melted adapter 1. It should be noted that the insulating support 5 is customized according to the specific shape and size of the coil 4 and the adapter 1, fitting tightly between them, ensuring effective isolation without affecting the overall structural stability of the assembly. In addition, the insulating bracket 5 can have a certain degree of elasticity, so that it can play a buffering role when the equipment is subjected to vibration or impact, further protecting the coil 4 and the adapter 1.

[0048] In specific implementation, a continuous receiving groove 521 for accommodating a single turn is provided on the contact surface between the insulating bracket 5 and the coil 4. When the coil 4 and the insulating bracket 5 are assembled, the single turn can be tightly embedded in the receiving groove 521, which not only ensures that the coil 4 will not shift or shake during operation, thus avoiding short circuits or other faults caused by the movement of the coil 4, but also enhances the structural stability of the entire adapter assembly. From the perspective of electrical performance, the receiving groove 521 helps to optimize the insulation effect between the coil 4 and the insulating bracket 5. Since the single turn is accommodated in the groove, the contact area with the outside is relatively reduced, reducing the risk of insulation performance degradation caused by external factors (such as dust, moisture, etc.). At the same time, this design can also make the magnetic field generated by the coil 4 more concentrated and stable, improving the electromagnetic compatibility of the adapter assembly. In addition, the setting of the insulating bracket 5 and its receiving groove 521 can simultaneously achieve insulation between the coil 4 and the adapter 1, and between the single turn of the coil 4.

[0049] In specific implementation, the insulating bracket 5 includes a first part 51, a second part 52, and a third part 53. The first part 51 has a through hole 511 through which a portion of the adapter 1 passes. The second part 52 is fitted onto the outside of the first part 51, and the coil 4 is wound around the outer surface of the second part 52. The two ends of the third part 53 are respectively connected to the side of the hole wall of the first part 51 facing away from the adapter 1 and the side of the second part 52 facing away from the coil 4. An insulating bracket 5 is constructed between the coil 4 and the adapter 1 to fix the coil 4 and insulate it from the adapter 1. The insulating bracket 5 has a coil 4 receiving groove 521 on its outer side, a through hole 511 through which the adapter 1 passes in the middle, and a supporting structure (third part 53) between the inner side (first part 51) and the outer side (second part 52). The third part 53 includes, but is not limited to, […]. Figure 7 The structure shown has a cavity 41 between the inner and outer structures except for the supporting structure, which can reduce the heat absorption of the supporting components.

[0050] In specific implementation, the second part 52 is provided with a continuous receiving groove 521 on the side for accommodating a single turn of the coil 4; the dimension of the receiving groove 521 along the axial direction of the coil 4 is the same as the diameter of the coil 4 wire. The single turn can be tightly embedded in the receiving groove 521, which not only ensures that the coil 4 will not be displaced or shaken during operation, thereby avoiding short circuits or other faults caused by the movement of the coil 4, but also enhances the structural stability of the entire adapter assembly.

[0051] In practice, coil 4 is usually placed on the positive electrode adapter (i.e., adapter 1 is the positive electrode adapter 1), because for lithium-ion batteries, the positive electrode adapter is usually made of aluminum, which has a low melting point and can respond to melting in time.

[0052] This application also provides a battery, including a terminal post 2, a tab 3, and the above-mentioned adapter assembly, wherein the adapter assembly connects the terminal post 2 and the tab 3.

[0053] As can be seen, the battery provided in this embodiment of the invention, by setting a coil 4 on the adapter 1, when the battery is under a large current, the magnetic field on the adapter 1 increases, causing the magnetic field through the coil 4 to change. The coil 4, due to its impedance, can impede the increase of current and slow down the rate of current increase, thereby reducing the impact of current on the battery. Furthermore, the increase in magnetic field can generate current in the coil 4, causing the coil 4 to generate heat and heat the connecting piece, which can accelerate the temperature rise and melting process of the adapter 1. Due to the auxiliary effect of the coil 4 on the melting of the adapter 1, the cross-section of the melting part 12 of the adapter 1 can be increased as much as possible during normal use.

[0054] In specific implementation, the battery also includes a cover plate 8, a casing 7, an insulating component, and a battery cell 6. The cover plate 8 and the casing 7 separate the inside of the battery cell 6 from the outside. The battery cell 6's tab 3 is connected to the cover plate 8's pole post 2 via an adapter 1. A coil 4 is set in a narrow position in the second direction of the adapter 1.

[0055] This application also provides an electrical device, including the battery described above.

[0056] Since the electrical device uses the battery described in the above embodiments, please refer to the above embodiments for the beneficial effects of the electrical device.

[0057] The electrical devices used in this invention are not particularly limited and may include, but are not limited to: laptops, pen-based computers, mobile computers, e-book players, portable telephones, portable fax machines, portable copiers, portable printers, stereo headphones, video recorders, LCD TVs, portable cleaners, portable CD players, mini CDs, transceivers, electronic notebooks, calculators, memory cards, portable recorders, radios, backup power supplies, motors, automobiles, motorcycles, electric bicycles, bicycles, lighting fixtures, toys, game consoles, clocks, power tools, flashlights, cameras, large household batteries, and lithium-ion capacitors, etc.

[0058] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0059] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0060] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A transfer assembly, characterized by, include: Adapter (1) is used to connect pole post (2) and pole tab (3); A coil (4) is fitted onto at least a portion of the adapter (1). The coil (4) is a closed loop formed by multiple consecutive single turns connected end to end. The coil (4) and the adapter (1) are insulated from each other. The coil (4) is insulated from adjacent single turns. A cavity (41) is formed inside the coil (4) to allow a portion of the structure of the adapter (1) to pass through. The angle between the axial direction of the cavity (41) and the current direction on the adapter (1) is greater than or equal to 0° and less than 90°. The adapter (1) includes a pole post connection (11), at least one fuse part (12), and a tab connection part (13) connected sequentially along a first direction; at least one fuse part (12) is connected between the pole post connection part (11) and the tab connection part (13), and along a second direction, the size of the fuse part (12) is smaller than the size of at least one of the pole post connection part (11) and the tab connection part (13); the coil (4) is sleeved on at least one fuse part (12), and the second direction is the direction in the plane where the fuse part (12) is located and is perpendicular to the first direction.

2. The adapter assembly of claim 1, wherein, The fuse section (12) includes at least two, and an opening (121) is provided between two adjacent fuse sections (12). The coil (4) is at least sleeved on the fuse section (12) with the smallest size along the second direction.

3. The adapter assembly of any one of claims 1-2, wherein, It also includes an insulating bracket (5) disposed between the coil and the adapter (1) to prevent the coil from contacting the adapter (1).

4. The adapter assembly of claim 3, wherein, A receiving groove (521) for accommodating a single turn and continuous is provided on the contact surface between the insulating bracket (5) and the coil (4).

5. The adapter assembly of claim 4, wherein, The insulating support (5) includes: The first part (51) has a through hole (511) and a portion of the structure of the adapter (1) passes through the through hole (511). The second part (52) is sleeved on the outside of the first part (51), and the coil (4) is wound around the outer surface of the second part (52); The third part (53) is connected at both ends to the side of the hole wall of the first part (51) away from the adapter (1) and the side of the second part (52) away from the coil (4), respectively.

6. The adapter assembly of claim 5, wherein, The second part (52) has a receiving groove (521) on the side for accommodating a single turn and continuously thereon for winding the coil (4). The dimension of the receiving groove (521) along the axial direction of the coil (4) is the same as the diameter of the wire body of the coil (4).

7. A battery, characterized by It includes a pole (2), a tab (3) and an adapter assembly according to any one of claims 1 to 6, the adapter assembly connecting the pole (2) and the tab (3).

8. An electrical device, characterized by Includes the battery as described in claim 7.

Images