Battery and electric equipment

Abstract

The utility model discloses a battery and electric equipment, and relates to the technical field of batteries, and the battery comprises a flexible adapter sheet, at least one battery cell structure and a cover plate. The flexible switching piece comprises a battery cell connecting part, a pole connecting part and a fusing part, and the battery cell connecting part, the pole connecting part and the fusing part are integrally arranged. At least one battery cell structure is provided with a tab, and the tab is connected with the battery cell connecting part. The cover plate is provided with a pole structure; and the pole structure is connected with the pole connecting part. Wherein the fusing part is located between the battery cell connecting part and the pole connecting part, and at least two fusing through holes are formed in the fusing part. According to the application, the rapid fusing part can be arranged on the flexible switching sheet in a hole digging manner, so that when the external short circuit of the battery core occurs, the fusing time of the flexible switching sheet can be shortened, and the electric loop can be cut off in time.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to a battery and an electrical device. Background Technology

[0002] In the existing square secondary battery cell design, when the battery cell is short-circuited externally, the position with the smallest effective current-conducting cross-sectional area (i.e. the position with the largest resistance) of the flexible adapter piece will be the first to melt, thereby cutting off the electrical circuit and effectively avoiding the dangerous situation of thermal diffusion and thermal runaway of the battery cell.

[0003] Specifically, existing square secondary battery cells generate a very large current (typically greater than 2000 amperes) when short-circuited. According to Joule's law, the heat Q is equal to the square of the current I multiplied by the resistance R and then by the time t, i.e., Q = I²Rt. Since the effect of current on heat generation is quadratic, a large amount of heat is generated in a short time, causing the temperature to rise sharply.

[0004] Under normal circumstances, the positive flexible adapter in the electrical circuit, due to its low melting point (usually aluminum with a melting point of 620℃), will first reach its melting point and melt at the location with higher resistance, thereby cutting off the electrical circuit and preventing further damage.

[0005] However, if this process continues for too long, the plastic material under the insulation layer (usually polypropylene, with a melting point of 189°C) and the sealing ring at the terminal (usually fluororubber, with a melting point of approximately 320°C) will reach their melting points, leading to insulation and sealing failure. This situation may cause serious safety problems such as battery fires and explosions. Utility Model Content

[0006] This application provides a battery and electrical device that can provide a fast-breaking part by making a hole in the flexible adapter piece, which can shorten the melting time of the flexible adapter piece and cut off the electrical circuit in time when there is an external short circuit in the battery cell.

[0007] In one aspect, this application provides a battery, which includes a flexible adapter sheet, at least one cell structure, and a cover plate.

[0008] The flexible adapter includes a cell connection portion, a terminal connection portion, and a fuse portion, which are integrally formed. At least one cell structure has a tab connected to the cell connection portion. The cover plate has a terminal structure connected to the terminal connection portion.

[0009] The fuse section is located between the cell connection section and the electrode connection section, and at least two fuse through holes are provided on the fuse section.

[0010] The flexible adapter is a conductive structure comprising three main parts: a cell connection section, a terminal connection section, and a fuse section. These three parts are integrated into a single design during manufacturing. The cell connection section connects to the tabs on the cell structure, ensuring smooth current flow from the cell to the flexible adapter. The terminal connection section connects to the terminal structure on the cover plate, further transferring current to the outside of the battery. The fuse section, located between the cell connection section and the terminal connection section, plays a crucial safety protection role.

[0011] At least two fuse-through holes are formed on the fuse section. These fuse-through holes are designed to quickly melt and break the current under certain circumstances, thereby protecting the battery from damage. Specifically, when an external short circuit occurs in the battery cell, the fuse section can respond quickly and melt rapidly through the fuse-through holes, thus cutting off the electrical circuit in time. This process can effectively avoid prolonged heat accumulation, prevent the lower plastic and sealing ring from reaching their melting point and melting, thereby preventing insulation and sealing failure of the cell, and ultimately preventing dangerous situations such as fire and explosion.

[0012] In some examples, there are two cell connection points, each of which is connected to a tab of a cell structure.

[0013] The two cell connection parts and the terminal connection parts cooperate to form a T-shaped structure, and the fuse part is located at the end of the terminal connection part near the two cell connection parts.

[0014] The number of cell connection points is set to two. Each cell connection point is connected to a tab of a cell structure. These two cell connection points, together with the terminal connection points, form a T-shaped structure. In this structure, the fuse is located at the end of the terminal connection point near the two cell connection points. This design effectively protects the battery pack by quickly cutting off the current in the event of an abnormal situation, thereby ensuring the safety and reliability of the battery pack.

[0015] In some examples, the direction of the electrode connection away from the two cell connections is the length direction of the electrode connection, the fuse is arranged along the width direction of the electrode connection, and at least two fuse through holes are arranged along the width direction of the electrode connection.

[0016] The aforementioned terminal connection extends in the opposite direction to the two cell connection portions; that is, the length direction of the terminal connection is away from the two cell connection portions. Meanwhile, the fuse portion is provided along the width direction of the terminal connection portion. Furthermore, at least two fuse through-holes are arranged along the width direction of the terminal connection portion.

[0017] In some examples, the projections of at least two fusible through holes in the width direction of the pole connection at least partially overlap.

[0018] The projections of at least two fusible through-holes in the width direction of the terminal connection overlap at least partially. This allows for a smaller cross-sectional area, thereby further accelerating the fusing speed and ensuring battery safety.

[0019] At least two fusible through-holes have projection areas that at least partially overlap each other in the width direction of the pole connection. This means that the positions of these fusible through-holes in the width direction of the pole connection are arranged such that their projections overlap at least partially in that direction. This design can effectively utilize space while ensuring a more compact and rational distribution of the fusible through-holes in the pole connection.

[0020] In some examples, the electrode structure includes an anode electrode and a cathode electrode, the flexible adapter includes an anode adapter and a cathode adapter, and the cell structure includes an anode tab and a cathode tab.

[0021] The anode tab is connected to the anode adapter plate, the anode adapter plate is connected to the anode post, the cathode tab is connected to the cathode adapter plate, and the cathode adapter plate is connected to the cathode post.

[0022] At least one of the anode adapter plate and the cathode adapter plate is provided with a fusible part having a fusible through hole.

[0023] The anode post is typically used for the positive terminal of a battery, while the cathode post is used for the negative terminal. Additionally, flexible adapter plates are also divided into anode adapter plates and cathode adapter plates, used to connect the positive and negative terminals of the battery, respectively. The cell structure includes anode tabs and cathode tabs, which are crucial for connecting the battery's internal circuitry to external circuitry.

[0024] Specifically, the anode tab is connected to the anode adapter plate via welding or other connection methods, and the anode adapter plate is further connected to the anode terminal to ensure that current can be smoothly transmitted from inside the battery to the external circuit. Similarly, the cathode tab is connected to the cathode adapter plate, and the cathode adapter plate is then connected to the cathode terminal to realize the current transmission at the negative terminal of the battery.

[0025] In these connections, at least one of the anode and cathode adapter plates is provided with a fusible portion containing a fusible through-hole. The purpose of this design is to ensure that in the event of an abnormal condition in the battery, such as overcurrent or a short circuit, the fusible through-hole can quickly melt, thereby cutting off the current and protecting the battery and circuitry. This fusing mechanism provides additional safety at critical moments, preventing damage or dangerous situations to the battery due to overheating or other causes.

[0026] In some examples, the anode adapter is provided with a fusible part having a fusible through hole, which is at least one of a polygonal hole, a circular hole, a fan-shaped hole, a heart-shaped hole, a plum blossom-shaped hole, and an elliptical hole.

[0027] The anode adapter is equipped with a fusible part that has a fusing function, and the fusible part includes one or more fusible through holes. These fusible through holes can be of various shapes, including but not limited to polygonal holes, circular holes, fan-shaped holes, heart-shaped holes, quincunx-shaped holes, and elliptical holes.

[0028] Specifically, the shapes of polygonal holes can vary widely, including triangular, square, pentagonal, hexagonal, heptagonal, and octagonal holes. These different shaped fusible vias play a crucial fusing role on the anode adapter, ensuring the safe operation of the circuit. By selecting an appropriate fusible via shape, precise fusing control can be achieved according to actual application requirements, thereby improving the reliability and safety of the circuit.

[0029] In some examples, the flexible adapter plate and the pole structure have overlapping areas relative to the projection area of ​​the cover plate, and the fusible through-hole is at least partially opened in the area outside the overlapping area.

[0030] The projection areas of the flexible adapter plate and the pole structure relative to the cover plate overlap to a certain extent; that is, the projections of these two structures on the cover plate partially overlap each other. In this case, the fusible via is at least partially located in areas outside the overlapping region to ensure that the fusible via is not covered by the overlapping portion of the flexible adapter plate and the pole structure, thereby ensuring that the function of the fusible via is not affected.

[0031] In some examples, the fusible vias are provided in at least one row, with each row of fusible vias arranged along the width direction of the pole connection.

[0032] The fusible vias are arranged in at least one row, with each row of vias running along the width of the terminal connection. This layout ensures that the fusible vias are evenly distributed across the width of the terminal connection, resulting in a more uniform and reliable fusing effect. This arrangement effectively improves the fusing efficiency and overall fusing performance of the fusible vias, ensuring rapid and accurate circuit disconnection under overload or abnormal conditions, thus guaranteeing safe circuit operation.

[0033] In some examples, a first elastic preload is provided on the fusible portion, which can quickly cut off the fusible portion by elastic force after the fusible portion softens.

[0034] And / or, the above-mentioned fuse-breaking through hole is provided with a second elastic preload member, which can soften in the area where the fuse-breaking through hole is located, and then quickly expand the fuse-breaking through hole and cut off the fuse portion through elastic force.

[0035] A first elastic preload is designed and installed on the fusible component. The function of this first elastic preload is to allow the device to quickly apply sufficient pressure to the softened fusible component through its built-in elastic force should the fusible component soften due to high temperature or other reasons, thereby achieving a rapid and effective cut-off operation. This design ensures that the fusible component can respond quickly in abnormal situations, preventing the spread of potential safety risks.

[0036] The fusible through-hole is also specially equipped with a second elastic preload. The purpose of this device is to rapidly expand the through-hole using its built-in elastic force when the material in the area of ​​the fusible through-hole softens due to high temperature or other factors. Through this expansion action, the second elastic preload can further cut off the fusible component, ensuring a complete break in the circuit during the fusing process, thereby protecting the circuit safety. This design not only improves the response speed of the fusible component but also enhances its reliability in emergency situations.

[0037] Secondly, this application provides an electrical device, including the aforementioned battery and device body, wherein the device body has a receiving cavity and the battery is disposed within the receiving cavity.

[0038] Electrical devices equipped with the aforementioned batteries can have a fast-blowout mechanism installed by drilling holes in the flexible adapter plate. This allows for a shorter melting time of the flexible adapter plate in the event of an external short circuit in the battery cell, promptly cutting off the electrical circuit and preventing the accumulation of heat over a long period from causing the lower plastic and sealing ring to reach their melting point and melt, thus avoiding dangerous situations such as insulation and sealing failure, fire, and explosion of the battery cell.

[0039] The flexible adapter is a conductive structure comprising three main parts: a cell connection section, a terminal connection section, and a fuse section. These three parts are integrated into a single design during manufacturing. The cell connection section connects to the tabs on the cell structure, ensuring smooth current flow from the cell to the flexible adapter. The terminal connection section connects to the terminal structure on the cover plate, further transferring current to the outside of the battery. The fuse section, located between the cell connection section and the terminal connection section, plays a crucial safety protection role.

[0040] At least two fuse-through holes are formed on the fuse section. These fuse-through holes are designed to quickly melt and break the current under certain circumstances, thereby protecting the battery from damage. Specifically, when an external short circuit occurs in the battery cell, the fuse section can respond quickly and melt rapidly through the fuse-through holes, thus cutting off the electrical circuit in time. This process can effectively avoid prolonged heat accumulation, prevent the lower plastic and sealing ring from reaching their melting point and melting, thereby preventing insulation and sealing failure of the cell, and ultimately preventing dangerous situations such as fire and explosion. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the examples or prior art description will be briefly introduced below. Obviously, the drawings described below are only some examples of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the structure of a single cell and a cover plate in a battery according to an example of this application, connected by a flexible adapter piece.

[0043] Figure 2 This is a schematic diagram of the structure of the flexible adapter piece in a battery in one example of this application.

[0044] Figure 3 This is a schematic diagram of the structure of the battery cell and the flexible adapter plate in an example of this application.

[0045] Figure 4 This is a schematic diagram of the axial structure of a battery in one example of this application, where two cell structures and a cover plate are connected by a flexible adapter piece.

[0046] Figure 5 This is a front view of the battery cell structure and cover plate connected by a flexible adapter in one example of this application.

[0047] Figure 6 This is a schematic diagram of the structure of a battery with a first elastic preload on the flexible adapter piece in one example of this application.

[0048] Figure 7 This is a schematic diagram of the structure of a battery with a second elastic preload on the flexible adapter piece in one example of this application.

[0049] Figure 8 This is a schematic diagram of the structure of a battery in an example of this application, where a first elastic preload and a second elastic preload are simultaneously provided on the flexible adapter piece.

[0050] Figure label:

[0051] 100. Flexible adapter piece; 110. Cell connection part; 120. Terminal connection part; 130. Fusible part; 140. Fusible through hole; 150. First elastic pre-tightening element; 160. Second elastic pre-tightening element; 170. Anti-reverse installation structure; 180. Clearance groove; 100a. Anode adapter piece; 100b. Cathode adapter piece;

[0052] 200. Cell structure; 200a. First cell; 200b. Second cell; 210. Anode tab; 220. Cathode tab;

[0053] 300, Cover plate; 310, Main body; 320, Pole post structure; 320a, Anode pole; 320b, Cathode pole;

[0054] 400, electrode tab solder mark; 500, electrode post solder mark. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and examples. It should be understood that the specific examples described herein are merely illustrative and not intended to limit the scope of this application.

[0056] To solve the above technical problems, please refer to Figures 1-8 As shown, the first aspect of this application proposes a battery in which a fast-blowout portion 130 is provided by drilling holes in the flexible adapter piece 100, which can shorten the melting time of the flexible adapter piece 100 and cut off the electrical circuit in time when there is an external short circuit in the battery cell.

[0057] Reference Figure 1 and Figure 2 In some examples, this application discloses a battery including a flexible adapter 100, at least one cell structure 200, and a cover plate 300.

[0058] The flexible adapter 100 includes a cell connection portion 110, a terminal connection portion 120, and a fuse portion 130, all of which are integrally formed. At least one cell structure 200 has a tab connected to the cell connection portion 110. The cover plate 300 has a terminal structure 320 connected to the terminal connection portion 120.

[0059] The fuse section 130 is located between the cell connection section 110 and the electrode connection section 120, and at least two fuse through holes 140 are provided on the fuse section 130.

[0060] By setting a fast-blowout part 130 on the flexible adapter piece 100 by drilling a hole, the melting time of the flexible adapter piece 100 can be shortened when there is an external short circuit in the battery cell, so as to cut off the electrical circuit in time and avoid the long-term heat accumulation causing the lower plastic and sealing ring to reach the melting point and melt, thereby preventing dangerous situations such as insulation and sealing failure, fire and explosion of the battery cell.

[0061] The flexible adapter 100 is a conductive structure comprising three main parts: a cell connection portion 110, a terminal connection portion 120, and a fuse portion 130. These three parts are integrated into a single structure during manufacturing. The cell connection portion 110 connects to the tabs on the cell structure 200, ensuring smooth current flow from the cell into the flexible adapter 100. A tab solder mark 400 can be provided at the connection point between the cell connection portion 110 and the cell structure 200. The terminal connection portion 120 connects to the terminal structure 320 on the cover plate 300, and a terminal solder mark 500 can be provided at the connection point to further transfer current to the outside of the battery. The fuse portion 130, located between the cell connection portion 110 and the terminal connection portion 120, plays a crucial safety protection role. The tab solder mark 400 and the terminal solder mark 500 can be solder marks produced by ultrasonic welding or laser welding.

[0062] At least two fuse-breaking through-holes 140 are formed on the fuse section 130. These fuse-breaking through-holes 140 are designed to quickly melt and break the current under certain circumstances, thereby protecting the battery from damage. Specifically, when an external short circuit occurs in the battery cell, the fuse section 130 can respond quickly and achieve rapid melting through the fuse-breaking through-holes 140, thereby timely cutting off the electrical circuit. This process can effectively avoid prolonged heat accumulation, prevent the lower plastic and sealing ring from reaching their melting point and melting, thereby preventing insulation and sealing failure of the battery cell, and ultimately preventing dangerous situations such as fire and explosion.

[0063] At least one cell structure 200 is the core component of the battery, responsible for storing and releasing electrical energy. Each cell structure 200 is provided with tabs, which are connected to the cell connection portion 110 of the flexible adapter plate 100. Through this connection method, the cell can effectively transfer the stored electrical energy to the flexible adapter plate 100, thereby supplying it to external circuits.

[0064] The cover plate 300 not only protects the internal structure but also connects to the terminal connection portion 120 of the flexible adapter plate 100. The cover plate 300 is provided with a terminal structure 320, which cooperates with the terminal connection portion 120 of the flexible adapter plate 100 to ensure that the current can be smoothly transferred from the inside of the battery to the outside.

[0065] In summary, the battery provided in this application achieves a rapid fuse-breaking function by providing a fusible through-hole 140 on the flexible adapter piece 100. This design can quickly cut off the current when a short circuit occurs in the battery cell, effectively avoiding the risk of battery damage, fire, or even explosion caused by prolonged heat accumulation. Through this safety protection measure, the battery's safety performance is significantly improved, providing users with a more reliable and safer power supply.

[0066] Reference Figure 1and Figure 2 The aforementioned fuse-breaking through-hole 140 is a fast-fusing part 130. The fast-fusing part 130 is located outside the area where the flexible adapter piece 100 and the top cover pole overlap in the Z direction projection. The number of fast-fusing parts 130 is at least two. The shape and size of the hole are not limited, but it must be ensured that the overlap length of each hole with any other hole in the Y direction projection is greater than zero.

[0067] The perforation of the flexible adapter 100 is located at least partially or entirely outside the area where the flexible adapter 100 and the top cover pole overlap in the Z-direction projection. The flexible adapter 100 is suitable for winding cores with a number of no more than 2, and the number of tabs connecting the flexible adapter 100 corresponds to the number of winding cores, ensuring that each winding core receives proper electrical connection and protection.

[0068] The flexible adapter plate 100 should have two or more holes. These holes not only help to disperse current but also allow for rapid melting in the event of a short circuit, thus promptly cutting off the electrical circuit and preventing prolonged heat buildup.

[0069] The fast-blowout section 130 can shorten the melting time of the flexible adapter piece 100 when it is short-circuited outside the cell, cut off the electrical circuit in time, and avoid the long-term heat accumulation that causes the plastic under the insulation and the sealing ring to reach the melting point and melt, thereby preventing dangerous situations such as insulation and sealing failure, fire and explosion of the cell.

[0070] The flexible adapter piece 100 can be made of aluminum with a melting point of 620℃, or other materials as needed. The insulating plastic is made of PP with a melting point of 189℃. The sealing ring at the pole position is made of fluororubber with a melting point of approximately 320℃.

[0071] In terms of design, the relative positions of the flexible adapter plate 100 and the top cover pole are positioned along the XYZ three directions. This three-dimensional positioning method ensures the stability and reliability of the device in all directions.

[0072] The flexible adapter plate 100 and the top cover terminal can be tightly joined in space by welding. This welding method ensures the stability and reliability of the device in all directions, thus providing a solid guarantee for the safe operation of the battery.

[0073] Reference Figures 3 to 5 In some examples, there are two cell connection portions 110, each cell connection portion 110 being connected to a tab of a cell structure 200. The two cell connection portions 110 cooperate with the terminal connection portion 120 to form a T-shaped structure, and the fuse portion 130 is provided at the end of the terminal connection portion 120 near the two cell connection portions 110.

[0074] The number of cell connection portions 110 is set to two. Each cell connection portion 110 is connected to a tab of a cell structure 200. These two cell connection portions 110 cooperate with the terminal connection portion 120 to form a T-shaped structure. In this structure, the fuse portion 130 is located at the end of the terminal connection portion 120 near the two cell connection portions 110. This design can effectively protect the battery pack by quickly cutting off the current in the event of an abnormal situation, thereby ensuring the safety and reliability of the battery pack.

[0075] Reference Figures 3 to 5 In some examples, the pole connection portion 120 is in the direction away from the two cell connection portions 110 along the length direction of the pole connection portion 120, the fuse portion 130 is provided along the width direction of the pole connection portion 120, and at least two fuse through holes 140 are arranged along the width direction of the pole connection portion 120.

[0076] The aforementioned terminal connection portion 120 extends in the opposite direction to the two cell connection portions 110, meaning that the length direction of the terminal connection portion 120 is opposite to that of the two cell connection portions 110. Meanwhile, the fuse portion 130 is provided along the width direction of the terminal connection portion 120. Furthermore, at least two fuse through-holes 140 are arranged along the width direction of the terminal connection portion 120.

[0077] In some examples, the projections of at least two fusible through-holes 140 onto the width of the pole connection 120 at least partially overlap.

[0078] The projections of at least two fusible through-holes 140 onto the width of the terminal connection 120 at least partially overlap. In this way, a smaller cross-sectional area can be achieved, thereby further accelerating the fusing speed and ensuring the safety of the battery.

[0079] At least two fusible through-holes 140 have projection areas that at least partially overlap each other in the width direction of the pole connection portion 120. This means that the positions of these fusible through-holes 140 in the width direction of the pole connection portion 120 are arranged such that their projections at least partially overlap in that direction. This design can effectively utilize space while ensuring a more compact and rational distribution of the fusible through-holes 140 in the pole connection portion 120.

[0080] In some examples, the electrode structure 320 includes an anode electrode 320a and a cathode electrode 320b, the flexible adapter 100 includes an anode adapter 100a and a cathode adapter 100b, and the cell structure 200 includes an anode tab 210 and a cathode tab 220.

[0081] Anode tab 210 is connected to anode adapter 100a, anode adapter 100a is connected to anode post 320a, cathode tab 220 is connected to cathode adapter 100b, and cathode adapter 100b is connected to cathode post 320b.

[0082] At least one of the anode adapter 100a and the cathode adapter 100b is provided with a fusible portion 130 having a fusible through hole 140.

[0083] The anode post 320a is typically used for the positive terminal of the battery, while the cathode post 320b is used for the negative terminal. Furthermore, the flexible adapter 100 is also divided into an anode adapter 100a and a cathode adapter 100b, used to connect the positive and negative terminals of the battery, respectively. The cell structure 200 includes an anode tab 210 and a cathode tab 220, which are crucial components connecting the battery's internal and external circuitry.

[0084] Specifically, the anode tab 210 is connected to the anode adapter piece 100a by welding or other connection methods, and the anode adapter piece 100a is further connected to the anode post 320a to ensure that the current can be smoothly transmitted from inside the battery to the external circuit. Similarly, the cathode tab 220 is connected to the cathode adapter piece 100b, and the cathode adapter piece 100b is then connected to the cathode post 320b, thereby realizing the current transmission at the negative terminal of the battery.

[0085] In these connections, at least one of the anode adapter 100a and the cathode adapter 100b is provided with a fusible portion 130, which includes a fusible through-hole 140. The purpose of this design is to ensure that in the event of an abnormal condition in the battery, such as overcurrent or a short circuit, the fusible through-hole 140 can quickly melt and disconnect the current, protecting the battery and the circuit. This fusing mechanism provides additional safety at critical moments, preventing damage to the battery or dangerous situations caused by overheating or other reasons.

[0086] The cell structure 200 can be configured with two cells, namely a first cell 200a and a second cell 200b, each of which is provided with an anode tab 210 and a cathode tab 220.

[0087] In some examples, the anode adapter 100a is provided with a fuse portion 130 having a fuse through hole 140, which is at least one of a polygonal hole, a circular hole, a fan-shaped hole, a heart-shaped hole, a plum blossom-shaped hole, and an elliptical hole.

[0088] The anode adapter 100a is provided with a fuse portion 130 having a fusing function, and the fuse portion 130 includes one or more fuse through holes 140. These fuse through holes 140 can be of various shapes, including but not limited to polygonal holes, circular holes, fan-shaped holes, heart-shaped holes, quincunx-shaped holes, and elliptical holes.

[0089] Specifically, the polygonal hole can have various shapes, such as triangular, square, pentagonal, hexagonal, heptagonal, octagonal, and so on. These different shaped fusible vias 140 play a crucial fusing role on the anode adapter 100a, ensuring the safe operation of the circuit. By selecting a suitable shape for the fusible via 140, precise fusing control can be achieved according to actual application requirements, thereby improving the reliability and safety of the circuit.

[0090] In some examples, the flexible adapter 100 and the pole structure 320 have overlapping areas relative to the projection area of ​​the cover plate 300, and the fusible through-hole 140 is at least partially opened in the area outside the overlapping area.

[0091] The projection areas of the flexible adapter piece 100 and the pole post structure 320 relative to the cover plate 300 overlap to a certain extent; that is, the projections of these two structures on the cover plate 300 partially overlap each other. In this case, the fusible through-hole 140 is at least partially opened in areas other than the overlapping area to ensure that the fusible through-hole 140 is not covered by the overlapping portion of the flexible adapter piece 100 and the pole post structure 320, thereby ensuring that the function of the fusible through-hole 140 is not affected.

[0092] In some examples, the fusible through holes 140 are provided in at least one row, and each row of fusible through holes 140 is arranged along the width direction of the pole connection portion 120.

[0093] The fusible vias 140 are arranged in at least one row, with each row of fusible vias 140 arranged along the width direction of the terminal connection portion 120. This layout ensures that the fusible vias 140 are evenly distributed along the width direction of the terminal connection portion 120, resulting in a more uniform and reliable fusing effect. This arrangement effectively improves the fusing efficiency and overall fusing performance of the fusible vias 140, ensuring rapid and accurate circuit disconnection under overload or abnormal conditions, thus guaranteeing the safe operation of the circuit.

[0094] Reference Figures 6 to 8 In some examples, a first elastic preload 150 is provided on the fuse portion 130, which can quickly cut off the fuse portion 130 by elastic force after the fuse portion 130 softens.

[0095] And / or, the fusible through hole 140 is provided with a second elastic preload 160, which can be softened in the area where the fusible through hole 140 is located, and then rapidly expand the fusible through hole 140 and cut off the fusible part 130 by elastic force.

[0096] A first elastic preload 150 is designed and installed on the fuse section 130. The function of this first elastic preload 150 is that, should the fuse section 130 soften due to high temperature or other reasons, the device can quickly apply sufficient pressure to the softened fuse section 130 through its built-in elastic force, thereby achieving a rapid and effective cut-off operation. This design ensures that the fuse section 130 can respond quickly in abnormal situations, preventing the spread of potential safety risks.

[0097] The fusible through-hole 140 is also specially equipped with a second elastic preload 160. The purpose of this device is to rapidly expand the through-hole using its built-in elastic force when the material in the area of ​​the fusible through-hole 140 softens due to high temperature or other factors. Through this expansion action, the second elastic preload 160 can further cut off the fuse portion 130, ensuring a complete circuit break during the fusing process, thereby protecting the circuit safety. This design not only improves the response speed of the fuse portion 130 but also enhances its reliability in emergency situations.

[0098] Figure 6 A detailed structural diagram shows the first elastic preload 150 mounted on the flexible adapter piece 100 inside the battery. This diagram clearly shows how the first elastic preload 150 is positioned on the flexible adapter piece 100 and its relative positional relationship with other battery components.

[0099] Figure 7 A detailed structural diagram is presented showing the second elastic preload 160 installed on the flexible adapter piece 100 inside the battery. This diagram allows for a detailed observation of the specific layout of the second elastic preload 160, as well as its interaction and positional relationship with the flexible adapter piece 100 and other battery components.

[0100] Figure 8 This diagram shows a detailed structural schematic of a flexible adapter plate 100 inside the battery, on which a first elastic preload 150 and a second elastic preload 160 are simultaneously installed. In this schematic, it is clear how the two elastic preloads work together on the flexible adapter plate 100, and their interaction and positional relationship with other parts of the battery.

[0101] On the fusible section 130, the fusible through holes 140 can be evenly arranged and arranged. The arrangement of these fusible through holes 140 exhibits a linear characteristic, meaning they are arranged along a certain trajectory. These trajectories can be straight lines, forming a neat and orderly arrangement; they can also be curves, presenting a beautiful arc shape; or they can be broken lines, forming a regular, zigzag arrangement. Whether straight, curved, or broken, these fusible through holes 140 are evenly distributed on the fusible section 130, ensuring the balance and functionality of the overall structure.

[0102] The linear arrangement of the fusing through-holes 140 not only helps improve fusing efficiency but also presents a visually orderly aesthetic. This design makes the distribution of the fusing through-holes 140 on the fusing part 130 both scientific and aesthetically pleasing, satisfying both functional requirements and aesthetic considerations. In practical applications, this design allows the fusing through-holes 140 to respond quickly and uniformly when the fusing part 130 fuses, ensuring that the current is cut off in a timely manner and avoiding potential safety hazards caused by uneven fusing.

[0103] Furthermore, the linear arrangement of the fusible vias 140 facilitates quality control and inspection during production. Because the distribution of the fusible vias 140 follows a certain regularity, automated equipment can be used for rapid inspection to ensure that each fusible via 140 meets design standards. This increased production efficiency not only reduces production costs but also improves the overall quality of the product.

[0104] In certain application scenarios, the linear arrangement of the fusible vias 140 can be optimized based on the direction and distribution of current. For example, in areas with high current density, the number of fusible vias 140 can be appropriately increased to improve the fusing capability in that area. Conversely, in areas with low current density, the number of fusible vias 140 can be appropriately reduced to decrease material usage and cost. This refined design can further enhance the battery's safety performance and economic efficiency.

[0105] Furthermore, the linear arrangement of the fuse through-holes 140 allows for the integration of more functions into the fuse section 130. For example, specific shapes of the fuse through-holes 140 can be designed to accommodate different fuse materials, or sensors can be embedded in the through-holes to monitor the fuse status and current changes before fuse failure in real time. This design not only improves the intelligence level of the fuse section 130 but also provides more data support for battery safety management.

[0106] Furthermore, the linear arrangement of the fusible vias 140 facilitates integration with other circuit components, such as direct connection to the circuit board, thereby simplifying the overall battery design and reducing complexity during assembly. This modular and standardized design makes battery repair and replacement more convenient and faster, significantly improving battery maintenance efficiency and lifespan.

[0107] In summary, the linear arrangement of the 140 fusible vias not only achieves efficient and safe fusing functionality technically, but also brings many conveniences in production and application, representing an innovative and practical improvement in battery design.

[0108] In this application, the design of the cover plate 300 incorporates several key components to ensure its functionality and safety. First, the main body 310 of the cover plate 300 serves as its basic structure, providing overall support and protection. The electrode post structure 320 is disposed on the main body 310. The electrode post structure 320 not only enhances the strength and stability of the cover plate 300 but also provides electrical connections, such as connecting to the electrode tabs of the battery cell via the flexible adapter piece 100.

[0109] Furthermore, the flexible adapter plate 100 incorporates an anti-reverse installation structure 170 as a mechanism to prevent incorrect or reverse installation of equipment or components. This structure is typically implemented through specific shapes, dimensions, or markings to ensure that components are installed only in the correct manner. The purpose of the anti-reverse installation structure 170 is to prevent equipment damage, performance degradation, or safety hazards caused by incorrect installation. In this way, equipment reliability and lifespan can be improved, while maintenance costs and operational risks are reduced.

[0110] The clearance groove 180 is designed to provide a certain space between the cover plate 300 and the flexible adapter piece 100 to avoid interference or friction during installation or use. The clearance groove 180 can be a simple groove structure or a more complex shape to adapt to different installation requirements and space constraints. This design effectively reduces wear and extends the service life of the cover plate 300 and the adapter piece.

[0111] Secondly, this application provides an electrical device, including the aforementioned battery and device body, wherein the device body has a receiving cavity and the battery is disposed within the receiving cavity.

[0112] Electrical devices equipped with the aforementioned batteries can have a fast-blowout section 130 provided by drilling holes in the flexible adapter piece 100. This allows the melting time of the flexible adapter piece 100 to be shortened when there is an external short circuit in the battery cell, thus cutting off the electrical circuit in time. This prevents the accumulation of heat over a long period of time from causing the lower plastic and sealing ring to reach their melting point and melt, which could lead to dangerous situations such as insulation and sealing failure, fire, or explosion of the battery cell.

[0113] The flexible adapter 100 is a conductive structure comprising three main parts: a cell connection portion 110, a terminal connection portion 120, and a fuse portion 130. These three parts are integrated into a single structure during manufacturing. The cell connection portion 110 connects to the tabs on the cell structure 200, ensuring smooth current flow from the cell into the flexible adapter 100. The terminal connection portion 120 connects to the terminal structure 320 on the cover plate 300, further transferring current to the outside of the battery. The fuse portion 130, located between the cell connection portion 110 and the terminal connection portion 120, plays a crucial safety protection role.

[0114] At least two fuse-breaking through-holes 140 are formed on the fuse section 130. These fuse-breaking through-holes 140 are designed to quickly melt and break the current under certain circumstances, thereby protecting the battery from damage. Specifically, when an external short circuit occurs in the battery cell, the fuse section 130 can respond quickly and achieve rapid melting through the fuse-breaking through-holes 140, thereby timely cutting off the electrical circuit. This process can effectively avoid prolonged heat accumulation, prevent the lower plastic and sealing ring from reaching their melting point and melting, thereby preventing insulation and sealing failure of the battery cell, and ultimately preventing dangerous situations such as fire and explosion.

[0115] In the accompanying drawings of this application, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application 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, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0116] The above are merely preferred examples of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application shall be included within the scope of protection of this application.

Claims

1. A battery, characterized in that, The battery includes: A flexible adapter sheet includes a cell connection part, a terminal connection part, and a fuse part, wherein the cell connection part, the terminal connection part, and the fuse part are integrally formed; At least one battery cell structure, wherein the battery cell structure is provided with a tab, and the tab is connected to the battery cell connection portion; The cover plate is provided with a pole post structure, and the pole post structure is connected to the pole post connecting part; The fusible part is located between the cell connection part and the electrode connection part, and the fusible part has at least two fusible through holes.

2. The battery as described in claim 1, characterized in that, The battery cell connection part is provided in two parts, and each battery cell connection part is connected to a tab of the battery cell structure. The two cell connection portions cooperate with the terminal connection portion to form a T-shaped structure, and the fuse portion is disposed at the end of the terminal connection portion near the two cell connection portions.

3. The battery as described in claim 2, characterized in that, The direction in which the electrode connection portion is away from the two cell connection portions is the length direction of the electrode connection portion, the fuse portion is arranged along the width direction of the electrode connection portion, and at least two fuse through holes are arranged along the width direction of the electrode connection portion.

4. The battery as described in claim 3, characterized in that, The projections of at least two of the fusible through holes in the width direction of the pole connection overlap at least partially.

5. The battery as described in claim 1, characterized in that, The electrode structure includes an anode electrode and a cathode electrode, the flexible adapter includes an anode adapter and a cathode adapter, and the cell structure includes an anode tab and a cathode tab. The anode tab is connected to the anode adapter plate, the anode adapter plate is connected to the anode post, the cathode tab is connected to the cathode adapter plate, and the cathode adapter plate is connected to the cathode post. The anode adapter and the cathode adapter are provided with a fusible portion having the fusible through hole.

6. The battery as described in claim 5, characterized in that, The anode adapter plate is provided with a fusible part having the fusible through hole, which is at least one of polygonal hole, circular hole, fan-shaped hole, heart-shaped hole, plum blossom-shaped hole, and elliptical hole.

7. The battery as claimed in any one of claims 1 to 5, characterized in that, The flexible adapter plate and the pole structure have an overlapping area relative to the projection area of ​​the cover plate, and the fusible through hole is at least partially opened in the area outside the overlapping area.

8. The battery as claimed in any one of claims 1 to 5, characterized in that, The fusible through holes are provided in at least one row, and each row of fusible through holes is arranged along the width direction of the pole connection.

9. The battery as described in any one of claims 1 to 5, characterized in that, The fuse portion is provided with a first elastic pre-tightening member, which can quickly cut off the fuse portion by elastic force after the fuse portion softens. And / or, the aforementioned fusible through hole is provided with a second elastic preload member, which can soften in the area where the fusible through hole is located, and then rapidly expand the fusible through hole and cut off the fusible portion through elastic force.

10. An electrical appliance, characterized in that, include: The battery as described in any one of claims 1 to 9; and, The main body of the device has a receiving cavity, and the battery is disposed in the receiving cavity.

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