A battery connecting device and a battery

Abstract

The utility model belongs to battery technical field, concretely relates to a connecting device and battery of battery, wherein the connecting device of battery includes polarity connecting part, explosion -proof sheet, circuit board body, conducting part and insulating installation shell, is equipped with assembly cavity in insulating installation shell, and polarity connecting part, explosion -proof sheet and conducting part are connected in assembly cavity's inside in order, and the circuit board body is set up in the middle of conducting part, and polarity connecting part is electrically connected with circuit board body, and conducting part is connected with the inner wall contact of insulating installation shell. The utility model can improve the compactness of overall structure, reduce the operation burden of staff's external operation, and improve work efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, and in particular relates to a battery connection device and a battery. Background Technology

[0002] With the rapid development of 5G, people have increasingly higher requirements for the battery life of electronic products. Therefore, high energy density remains one of the main development directions for lithium-ion batteries. In related technologies, lithium-ion batteries mainly include a battery casing, a cell, and electrode assemblies. The cell and electrolyte are housed within the battery casing, and the current from the cell is conducted through the electrode assemblies. The cell can include a positive electrode, a separator, and a negative electrode, which are sequentially stacked and wound or stacked to form the cell. However, traditional battery structures are connected to external circuit boards using screws and drilling. This method is very prone to damaging the battery panels or battery packs; it also increases the workload for operators and reduces work efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a battery connection device and a battery to address the shortcomings of the existing technology, thereby solving the technical problem of low working efficiency in the existing technology.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A battery connection device includes a polarity connection component, an explosion-proof sheet, a circuit board body, a conductive component, and an insulating mounting shell; the insulating mounting shell has an assembly cavity; the polarity connection component, the explosion-proof sheet, and the conductive component are sequentially stacked and connected inside the assembly cavity; the circuit board body is disposed in the middle of the conductive component; and the polarity connection component is electrically connected to the circuit board body; the conductive component is in contact with the inner wall of the insulating mounting shell.

[0005] Preferably, the polarity connection component includes a polarity connection plate and an insulating sleeve; the insulating sleeve has a mounting groove; the mounting groove is connected to one side of the assembly cavity; the polarity connection plate is connected to the interior of the mounting groove; and the outer surface of the insulating sleeve away from the mounting groove abuts against the inner wall of the insulating mounting shell.

[0006] Preferably, the insulating sleeve has a mounting protrusion, and the mounting protrusion forms a mounting groove with the inner sidewall of the insulating sleeve; and the insulating sleeve also has a mounting channel; the mounting channel extends through the thickness direction of the insulating sleeve.

[0007] Preferably, the polarity connecting plate includes a first support portion and a second support portion; the first support portion is disposed around the outer end face of the second support portion, and a first flow-expanding groove is provided between the first support portion and the second support portion; the first flow-expanding groove is disposed above the explosion-proof sheet; and the second support portion is provided with at least one flow-guiding hole; the flow-guiding hole is disposed through the thickness direction of the second support portion, and the flow-guiding hole is connected to the first flow-expanding groove.

[0008] Preferably, the explosion-proof sheet includes a third support portion and an explosion-proof protrusion; the explosion-proof protrusion is connected to the upper surface of the third support portion and is disposed below the flow guide hole; and the explosion-proof protrusion has a second explosion-proof recess and a second flow diffuser groove that are interconnected and arranged sequentially on the side surface of the explosion-proof protrusion facing the conductive component. The inner width of the second expansion groove is greater than the inner width of the second explosion-proof recess.

[0009] Preferably, the upper surface of the third support portion is further provided with an abutting protrusion; the abutting protrusion protrudes from the explosion-proof sheet toward the second support portion; the abutting protrusion extends to the first expansion groove and abuts against the bottom of the second support portion; and the side surface of the abutting protrusion away from the second support portion is provided with a second assembly groove.

[0010] Preferably, the conductive component includes a first conductive ring and a second conductive ring; the first conductive ring is disposed between the bottom surface of the explosion-proof sheet and the upper surface of the circuit board body; the second conductive ring is connected to the bottom surface of the circuit board body away from the first conductive ring; and the outer surface of the first conductive ring abuts against the inner wall of the insulating mounting shell; an assembly gap is provided between the outer surface of the second conductive ring and the inner wall of the insulating mounting shell.

[0011] Preferably, the first conductive ring is provided with a pressure relief channel; the pressure relief channel is arranged through the thickness direction of the first conductive ring, and one end of the pressure relief channel extends to the bottom of the explosion-proof sheet; the circuit board body is provided with a vent hole, which is arranged through the thickness direction of the circuit board body.

[0012] Preferably, a conductive support sheet is provided on the bottom surface of the circuit board body away from the explosion-proof sheet; and a second mounting gap is provided between the conductive support sheet and the circuit board body; a first mounting gap is provided between the second conductive ring and the conductive support sheet; and the vent hole is connected to the second mounting gap.

[0013] This utility model also discloses a battery, including the connection device of the battery described above. The beneficial effects of this utility model are that the polarity connection component acting as the negative electrode connection piece, the conductive component acting as the positive electrode connection piece, and the circuit board body are stacked and integrated inside an insulating mounting shell, thereby improving the overall structural compactness and avoiding the assembly operation of the battery structure with the external circuit board through screws and drilling; it also helps to ensure the protection of the circuit board; it can also reduce the workload of external operations for workers, thus improving work efficiency; in addition, explosion-proof plates separate the polarity connection component from the circuit board body and the conductive component to achieve its pressure relief and explosion-proof performance, and can also ensure continuous use and avoid short circuits and other phenomena. Attached Figure Description

[0014] The following will refer to the appendix. Figures 1-7 This section describes the features, advantages, and technical effects of exemplary embodiments of the present invention.

[0015] Figure 1 This is an exploded view of a battery connection device according to an embodiment of the present invention; Figure 2 This is a cross-sectional view of a battery connection device according to an embodiment of the present invention; Figure 3 This is a partial cross-sectional view of a battery connection device according to an embodiment of the present invention; Figure 4 This is a cross-sectional view of the polarity connecting plate of a battery connection device according to an embodiment of the present invention. Figure 5 This is a cross-sectional view of the explosion-proof plate of the battery connection device according to an embodiment of the present invention. Figure 6 This is an exploded view of a battery according to an embodiment of the present invention; Figure 7In a partial cross-sectional view of a battery according to an embodiment of the present invention: 1-Polarity connection component; 11-Polarity connection plate; 111-Flow guide hole; 112-First support part; 113-Second support part; 114-First flow diffuser groove; 115-First assembly groove; 116-First explosion-proof recess; 12-Insulating sleeve; 121-Mounting protrusion; 122-Mounting groove; 2-Explosion-proof sheet; 21-Third support part; 22-Explosion-proof protrusion; 221-Second explosion-proof recess; 222-Second flow diffuser groove ; 23-Abutting protrusion; 231-Second assembly groove; 3-Circuit board body; 31-Vent hole; 4-Conductive component; 41-First conductive ring; 411-Pressure relief channel; 412-First pressure relief section; 413-Second pressure relief section; 42-Second conductive ring; 421-First mounting gap; 5-Insulating mounting shell; 501-Assembly cavity; 51-Supporting protrusion; 511-Flow guide groove; 6-Conductive support piece; 61-Second mounting gap; 700-Protective shell; 800-Battery cell body. Detailed Implementation

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is intended to particularly describe embodiments and not to limit the scope of this application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0017] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the embodiment description, "multiple" refers to two or more, unless otherwise specifically defined.

[0018] The term 'embodiment' means that a particular feature, structure, or characteristic described exists in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0019] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or multiple situations existing alone. In addition, the character " / " in this document generally indicates that the related objects before and after are in an "or" relationship.

[0020] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can also refer to a mechanical connection or an electrical connection. They can be directly connected or indirectly connected through an intermediate medium, manifesting as internal communication between two components or an interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0021] The following is in conjunction with the appendix Figures 1 to 7 The present invention will be described in further detail, but this is not intended to limit the scope of the present invention.

[0022] like Figure 1 As shown, in one embodiment of this utility model, the battery connection device includes a polarity connection component 1, an explosion-proof sheet 2, a circuit board body 3, a conductive component 4, and an insulating mounting shell 5. The insulating mounting shell 5 has an assembly cavity 501. The polarity connection component 1, the explosion-proof sheet 2, and the conductive component 4 are sequentially stacked and connected inside the assembly cavity 501. The circuit board body 3 is disposed in the middle of the conductive component 4, and the polarity connection component 1 is electrically connected to the circuit board body 3. The conductive component 4 is in contact with the inner wall of the insulating mounting shell 5. The circuit board body 3 is selected from battery circuit boards of model CR2025 or CR2032.

[0023] The technical solution of this utility model integrates the polarity connection component (acting as the negative electrode connection piece), the conductive component (acting as the positive electrode connection piece), and the circuit board body inside an insulating mounting shell to improve the overall compactness of the structure. This avoids the assembly operation of the battery structure and the external circuit board through screws and drilling. It also helps to protect the circuit board and reduces the workload of external operations for workers, thus improving work efficiency. In addition, the polarity connection component is separated from the circuit board body and the conductive component by an explosion-proof sheet to achieve its pressure relief and explosion-proof performance, and also ensures continuous use and avoids short circuits.

[0024] Specifically, in some implementations, such as Figure 1 and 2As shown, the polarity connection component 1 includes a polarity connection plate 11 and an insulating sleeve 12; the insulating sleeve 12 has a mounting groove 122; the mounting groove 122 is connected to the opening at one end of the assembly cavity 501; the polarity connection plate 11 is connected to the interior of the mounting groove 122; and the outer surface of the insulating sleeve 12 away from the mounting groove 122 abuts against the inner wall of the insulating mounting shell 5. That is, the polarity connection plate 11 is used for electrical connection of the negative electrode tab of the battery cell, and passes through the insulating sleeve 12 to electrically connect with the circuit board body 3; this separates the polarity connection plate 11 from direct contact with the insulating mounting shell 5, thereby avoiding short circuits and ensuring continuous use. For example, Figure 1 As shown, the insulating sleeve 12 has a mounting protrusion 121 inside, and the mounting protrusion 121 forms a mounting groove 122 between the inner sidewall of the insulating sleeve 12; the insulating sleeve 12 also has a mounting channel inside, which extends through the thickness of the insulating sleeve 12. This structure ensures the installation stability of the circuit board body 3 and the smooth conductivity of its use by the mounting protrusion 121 abutting against the bottom of the circuit board body 3, and the mounting groove 122 formed by the mounting protrusion 121 and the inner sidewall of the insulating sleeve 12 engaging with the outer sidewall of the circuit board body 3.

[0025] Specifically, in some implementations, such as Figure 2 and 3 As shown in Figure 4, the polarity connecting plate 11 includes a first support portion 112 and a second support portion 113; the first support portion 112 is arranged around the outer end face of the second support portion 113, and a first diffusion groove 114 is provided between the first support portion 112 and the second support portion 113; the first diffusion groove 114 is located above the explosion-proof sheet 2; and the second support portion 113 is provided with at least one guide hole 111; the guide hole 111 is arranged through the thickness direction of the second support portion 113, and the guide hole 111 is connected to the first diffusion groove 114. That is, the first support portion 112 and the second support portion 11 form a stepped structure, and the gas pressure is guided to the first diffusion groove 114 through multiple guide holes 111 to improve the guidance of pressure relief and avoid phenomena such as explosion due to excessive pressure. Figure 3 and 4As shown, the top surface of the second support portion 113 away from the first expansion groove 114 is provided with a first assembly groove 115; the bottom surface of the second support portion 113 is provided with a first explosion-proof recess 116; the first explosion-proof recess 116 is connected to the first expansion groove 114 and is located below the first assembly groove 115. Further, the first explosion-proof recess 116 is a V-shaped annular first explosion-proof recess; and the opening width of the V-shaped recess near the first expansion groove 114 is greater than the opening width of the V-shaped recess away from the first expansion groove 114. That is, when the internal pressure is too high and the pressure relief function of the guide hole 111 is insufficient, the air pressure will impact the first assembly groove 115, and then squeeze the polar connecting plate 11 at the first assembly groove 115, so that the impact polar connecting plate 11 breaks along the first explosion-proof recess 116, thereby achieving pressure relief operation; thus improving the safety and stability of use.

[0026] Specifically, in some implementations, such as Figure 2 , 3 As shown in Figure 5, the explosion-proof sheet 2 includes a third support portion 21 and an explosion-proof protrusion 22. The explosion-proof protrusion 22 is connected to the upper surface of the third support portion 21 and is located below the guide hole 111. The surface of the explosion-proof protrusion 22 facing the conductive component 4 is provided with a second explosion-proof recess 221 and a second flow-expanding groove 222 that are interconnected and arranged sequentially. The inner width of the second flow-expanding groove 222 is greater than the inner width of the second explosion-proof recess 221. The explosion-proof protrusion 22 is an annular explosion-proof protrusion. That is, during normal use, the guide hole 111 guides the airflow to the gap between the third support portion 21, the explosion-proof protrusion 22, and the polarity connecting plate 11 (the second support portion 113). When the air pressure is abnormal, the excessive stress caused by the excessively high air pressure will impact the third support 21 and the explosion-proof protrusion 22. Furthermore, the explosion-proof protrusion 22 is provided with a second explosion-proof recess 221 and a second diffuser 222. Therefore, the explosion-proof protrusion 22 is easily broken by impact stress to form a pressure relief channel, thereby realizing the pressure relief operation and improving the safety and stability of use.

[0027] Specifically, in some implementations, such as Figure 3 and 5As shown, the upper surface of the third support 21 is also provided with an abutment protrusion 23; the abutment protrusion 23 protrudes from the explosion-proof sheet 2 toward the second support 113; the abutment protrusion 23 extends to the first diffuser groove 114 and abuts against the bottom of the second support 113; and the side surface of the abutment protrusion 23 away from the second support 113 is provided with a second assembly groove 231. That is to say, when the internal pressure is too high and the pressure relief effect of the guide hole 111 is insufficient, the air pressure will impact the first assembly groove 115, and then squeeze the polar connecting plate 11 at the first assembly groove 115, while pushing the second support 113 toward the second assembly groove 231 to deform it, so as to realize that the impact polar connecting plate 11 breaks along the first explosion-proof recess 116, and accelerates the breaking speed of the explosion-proof protrusion 22, thereby realizing a rapid pressure relief operation; thereby improving the safety and stability of use.

[0028] Specifically, in some implementations, such as Figure 1 and 2 As shown, the insulating mounting shell 5 is provided with a support protrusion 51; the assembly cavity 501 is disposed through the interior of the support protrusion 51; and the polarity connection component 1 (middle insulating sleeve 12) is connected to the interior of the support protrusion 51; and the upper surface of the explosion-proof sheet 2 abuts against the bottom of the support protrusion 51; the top of the support protrusion 51 is used to abut against the battery cell. Wherein, as Figure 2 As shown, the support protrusion 51 is provided with at least one heat dissipation groove 511. That is, through the support of the support protrusion 51 on the battery cell and the heat dissipation groove 511 on the heat dissipation, the support stability of the battery cell and its heat dissipation effect are ensured.

[0029] Specifically, in some implementations, such as Figure 1 and 2 As shown, the conductive component 4 includes a first conductive ring 41 and a second conductive ring 42. The first conductive ring 41 is connected to the bottom surface of the explosion-proof sheet 2 and the upper surface of the circuit board body 3. The second conductive ring 42 is connected to the bottom surface of the circuit board body 3 away from the first conductive ring 41. The outer surface of the first conductive ring 41 abuts against the inner wall of the insulating mounting shell 5. An assembly gap is provided between the outer surface of the second conductive ring 42 and the inner wall of the insulating mounting shell 5. This structure improves the installation stability of the circuit board body 3 by clamping and assembling the circuit board body 3 with the first conductive ring 41 and the second conductive ring 42, thereby ensuring its stability in use.

[0030] In some implementation methods, such as Figure 3As shown, a pressure relief channel 411 is provided inside the first conductive ring 41; the pressure relief channel 411 is arranged through the thickness direction of the first conductive ring 41, and one end of the pressure relief channel 411 extends to the bottom of the explosion-proof sheet 2 (middle explosion-proof protrusion 22); a vent hole 31 is provided inside the circuit board body 3, and the vent hole 31 is arranged through the thickness direction of the circuit board body 3. Further, as... Figure 3 As shown, the pressure relief channel 411 includes a first pressure relief section 412 and a second pressure relief section 413 stacked together; the side of the second pressure relief section 413 away from the first pressure relief section 412 extends to the circuit board body 3; and the width of the first pressure relief section 412 is smaller than the width of the second pressure relief section 413. That is to say, the first pressure relief section 412 and the second pressure relief section 413 form a pressure relief channel 411 with a small opening at the upper end and a large opening at the lower end. Combined with the pressure relief and exhaust function of the upper vent 31, the probability of explosion is reduced, thereby improving its stability in use.

[0031] Specifically, in some implementations, such as Figure 2 and 3 As shown, a conductive support piece 6 is also provided on the bottom surface of the circuit board body 3 away from the explosion-proof sheet 2; and a second mounting gap 61 is provided between the conductive support piece 6 (the middle part) and the circuit board body 3; a first mounting gap 421 is provided between the second conductive ring 42 and the outer surface of the conductive support piece 6; and the vent hole 31 is connected to the second mounting gap 61. The conductive support piece 6 is connected to the circuit board body 3 by means of surface mount soldering or other methods. That is, when the internal air pressure is too high, the depressurized gas is transported to the vent hole 31 and the second mounting gap 61; and when the pressure value reaches the breaking value, it will impact the conductive support piece 6 and cause it to fall off, thereby forming a pressure relief channel, thus reducing the probability of an explosion and improving its stability in use.

[0032] This utility model also proposes a battery, such as Figure 6 and 7 As shown, the battery includes a battery connection device, a protective shell 700, and a cell body 800. The protective shell 700 has a placement cavity 701 (which is the electrolyte storage space). The cell body 800 is disposed inside the placement cavity 701. An insulating mounting shell 5 is disposed at the top inner part of the placement cavity 701. The top of the insulating mounting shell 5 (with a central support protrusion 51) abuts against the bottom of the cell body 800. The outer side wall of the insulating mounting shell 5 abuts against the inner side wall of the protective shell 700 (to form the positive electrode post). The polarity connection component 1 (central polarity connection plate 11) is connected to the cell body 800 (central negative electrode tab). The specific structure of the battery connection device is as described in the above embodiments. Since this battery adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0033] The battery cell body 800 includes a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrodes. The positive electrode includes a positive current collector and a positive active material layer, the latter coated on the surface of the current collector. The current collector can be made of aluminum, and the active material layer includes the active material, which can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer, the latter coated on the surface of the current collector. The current collector can be made of copper, and the active material layer includes the active material, which can be carbon or silicon, etc. The separator can be made of PP (polypropylene) or PE (polyethylene), etc.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. Based on the disclosure and teachings of the above specification, those skilled in the art can also make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions, or modifications made by those skilled in the art based on this utility model are within the protection scope of this utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A battery connection device, characterized in that: The device includes a polarity connection component, an explosion-proof sheet, a circuit board body, a conductive component, and an insulating mounting shell. The insulating mounting shell contains an assembly cavity. The polarity connection component, the explosion-proof sheet, and the conductive component are sequentially stacked and connected inside the assembly cavity. The circuit board body is positioned in the middle of the conductive component. The polarity connection component is electrically connected to the circuit board body. The conductive component is in contact with the inner wall of the insulating mounting shell.

2. The battery connection device according to claim 1, characterized in that: The polarity connection component includes a polarity connection plate and an insulating sleeve; the insulating sleeve has a mounting groove; the mounting groove is connected to one side of the assembly cavity; the polarity connection plate is connected to the interior of the mounting groove; and the outer surface of the insulating sleeve away from the mounting groove abuts against the inner wall of the insulating mounting shell.

3. The battery connection device according to claim 2, characterized in that: The insulating sleeve has an installation protrusion inside, and the installation protrusion forms an installation groove with the inner sidewall of the insulating sleeve; and the insulating sleeve also has an installation channel inside; the installation channel extends through the thickness direction of the insulating sleeve.

4. The battery connection device according to claim 2, characterized in that: The polarity connecting plate includes a first support portion and a second support portion; the first support portion is arranged around the outer end face of the second support portion, and a first flow-expanding groove is provided between the first support portion and the second support portion; the first flow-expanding groove is arranged above the explosion-proof sheet; and the second support portion is provided with at least one flow-guiding hole; the flow-guiding hole is arranged through the thickness direction of the second support portion, and the flow-guiding hole is connected to the first flow-expanding groove.

5. The battery connection device according to claim 4, characterized in that: The explosion-proof sheet includes a third support portion and an explosion-proof protrusion; the explosion-proof protrusion is connected to the upper surface of the third support portion and is disposed below the flow guide hole; and the side surface of the explosion-proof protrusion facing the conductive component is provided with a second explosion-proof recess and a second flow diffuser groove that are interconnected and arranged sequentially. The inner width of the second expansion groove is greater than the inner width of the second explosion-proof recess.

6. The battery connection device according to claim 5, characterized in that: The upper surface of the third support is also provided with an abutting protrusion; the abutting protrusion protrudes from the explosion-proof sheet toward the second support; the abutting protrusion extends to the first expansion groove and abuts against the bottom of the second support; and the side surface of the abutting protrusion away from the second support is provided with a second assembly groove.

7. The battery connection device according to claim 1, characterized in that: The conductive component includes a first conductive ring and a second conductive ring; the first conductive ring is disposed between the bottom surface of the explosion-proof sheet and the upper surface of the circuit board body; the second conductive ring is connected to the bottom surface of the circuit board body away from the first conductive ring; and the outer surface of the first conductive ring abuts against the inner wall of the insulating mounting shell; an assembly gap is provided between the outer surface of the second conductive ring and the inner wall of the insulating mounting shell.

8. The battery connection device according to claim 7, characterized in that: The first conductive ring is provided with a pressure relief channel; the pressure relief channel is arranged through the thickness direction of the first conductive ring, and one end of the pressure relief channel extends to the bottom of the explosion-proof sheet; the circuit board body is provided with a vent hole, which is arranged through the thickness direction of the circuit board body.

9. The battery connection device according to claim 8, characterized in that: The bottom surface of the circuit board body away from the explosion-proof sheet is also provided with a conductive support sheet; and a second mounting gap is provided between the conductive support sheet and the circuit board body; a first mounting gap is provided between the second conductive ring and the conductive support sheet; and the vent hole is connected to the second mounting gap.

10. A battery, characterized in that: The battery connection device includes any one of claims 1 to 9.

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