Connecting assembly, battery pack and electric device

Abstract

The utility model discloses a connecting assembly, a battery pack and an electric device, relates to the technical field of batteries, and aims to solve the problem of low safety of the battery pack. The connecting assembly comprises a mounting piece, a first sealing ring and a connector. The installation part comprises a pressing plate and a limiting plate, and the limiting plate is arranged on the pressing plate. A through hole is formed in the pressing plate, and the limiting plate is located on the side, in the axial direction of the through hole, of the pressing plate. The limiting plate is arranged around the through hole by one circle, and the first sealing ring is arranged on the limiting plate in a sleeving mode. The connector is arranged in the through hole in a penetrating mode and connected with the installation piece. The connecting assembly disclosed by the utility model can be applied to the battery pack, and the battery pack can be charged or discharged through the connecting assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a connection component, a battery pack and an electrical device. Background Art

[0002] As a power source for electrical devices, battery packs are one of the important components of electrical devices, and the safety of battery packs is particularly important. In related technologies, a through hole is provided on the shell of the battery pack, and the connector passes through the through hole to connect with the battery in the shell, and the battery can be charged or discharged through the connector. Among them, a sealing ring is usually provided on the connector to seal the gap between the connector and the shell. However, the sealing reliability of the above sealing ring is poor, resulting in low safety of the battery pack. Utility Model Content

[0003] The purpose of the utility model is to provide a connection assembly, a battery pack and an electrical device, aiming to solve the problem of low safety of the battery pack.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] In a first aspect, the present application provides a connection assembly, which includes a mounting member, a first sealing ring, and a connector. The mounting member includes a pressure plate and a limit plate, and the limit plate is arranged on the pressure plate. A through hole is arranged on the pressure plate, and the limit plate is located on one side of the pressure plate in the axial direction of the through hole. The limit plate is arranged around the through hole, and the first sealing ring is sleeved on the limit plate. The connector is inserted into the through hole, and the connector is connected to the mounting member.

[0006] It is understandable that the connector can be installed on the battery pack shell through the mounting member, and the first sealing ring can seal the gap between the mounting member and the battery pack shell to prevent moisture from entering the shell. Among them, the limit plate on the mounting member can block the end of the first sealing ring close to the connector, thereby reducing the probability of the first sealing ring contacting with moisture and other substances in the external environment, thereby reducing the risk of the first sealing ring being corroded. In this way, the reliability of the sealing of the first sealing ring can be improved, thereby improving the safety of the battery pack.

[0007] In some embodiments, the mounting member further comprises a baffle, which is disposed on the pressure plate and surrounds the limiting plate, wherein the baffle, the pressure plate and the limiting plate form a groove, and the first sealing ring is located in the groove.

[0008] In some embodiments, the connector includes a fixing plate and a plug body. The fixing plate is connected to the mounting member, and is disposed on a side of the pressure plate away from the limiting plate, and the fixing plate is at least partially located around the through hole. The plug body is disposed in the through hole and connected to the fixing plate.

[0009] In some embodiments, the connection assembly further includes a first connecting member. The fixing plate is provided with a first avoidance hole, the mounting member is provided with a first connection hole, and a first connection structure is arranged in the first connection hole. The first connecting member passes through the first avoidance hole and is connected to the first connection structure in the first connection hole. Wherein, the first connection hole is a blind hole.

[0010] In some embodiments, the first sealing ring is connected to the pressing plate.

[0011] In some embodiments, the pressing plate is provided with convex ribs on the surface facing away from the first sealing ring.

[0012] In some embodiments, the connection assembly further includes a second sealing ring, the second sealing ring is sleeved on the connector, and the second sealing ring is located between the connector and the limiting plate.

[0013] In some embodiments, the second sealing ring is provided with a sealing protrusion on the surface close to the limiting plate, and the sealing protrusion is arranged around the connector for one week.

[0014] In some embodiments, the two surfaces of the sealing protrusion in the axial direction of the through hole are inclined surfaces, and the two ends of the two inclined surfaces close to the limiting plate are inclined towards the direction of approaching each other.

[0015] In some embodiments, the second sealing ring is provided with a plurality of sealing protrusions, and the plurality of sealing protrusions are arranged in sequence along the axial direction of the through hole.

[0016] In some embodiments, the connector is provided with a limiting groove, and the opening of the limiting groove faces the limiting plate. The limiting groove is arranged around the connector for one week, and the end of the second sealing ring facing away from the limiting plate is located in the limiting groove.

[0017] In a second aspect, the present application provides a battery pack, which includes a battery and the above-mentioned connection assembly. The connector in the connection assembly is connected to the battery, and the battery can be charged or discharged through the connector.

[0018] In some embodiments, the battery pack further includes a housing, the housing has a receiving cavity, the battery is arranged in the receiving cavity, and the connection assembly is arranged on the housing. Wherein, the housing is provided with a mounting hole communicating with the receiving cavity, and the limiting plate of the mounting member passes through the mounting hole; the pressing plate of the mounting member is located on the periphery of the housing, and the first sealing ring is located between the pressing plate and the housing.

[0019] In some embodiments, the housing is provided with a mounting groove on the surface facing away from the receiving cavity, the mounting groove includes a bottom wall and a side wall connected to each other, the side wall is located on the side of the bottom wall facing away from the receiving cavity, and the side wall surrounds the bottom wall for one week. Wherein, the mounting hole is arranged on the bottom wall, and the mounting member is located on the side of the side wall close to the mounting hole.

[0020] In some embodiments, along the radial direction of the mounting hole, the distance between the side wall and the mounting member is less than or equal to 5 mm.

[0021] In some embodiments, along the radial direction of the mounting hole, the distance between the side wall and the mounting member is greater than or equal to 0.5 mm.

[0022] In some embodiments, the battery pack further includes a second connecting member. The pressing plate of the mounting member is provided with a second avoiding hole, the housing is provided with a second connecting hole, and a second connecting structure is arranged in the second connecting hole. The second connecting member passes through the second avoiding hole and is connected to the second connecting structure in the second connecting hole. Among them, the second connecting hole is a blind hole.

[0023] In a third aspect, the present application provides an electrical device, which includes an electrical appliance device and the above-mentioned battery pack. The battery pack is connected to the electrical appliance device and is used to supply power to the electrical appliance device.

[0024] For the technical effects brought by any implementation manner in the above second aspect and third aspect, reference can be made to the technical effects brought by the corresponding implementation manner in the first aspect, which will not be elaborated here. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a structural diagram of an electrical device provided by an embodiment of the present application;

[0027] Figure 2 It is a structural diagram of a battery pack provided by an embodiment of the present application;

[0028] Figure 3 It is an exploded view of a housing and a connection assembly provided by an embodiment of the present application;

[0029] Figure 4 It is a structural diagram of a mounting member provided by an embodiment of the present application;

[0030] Figure 5 For Figure 3 the assembly diagram of the housing and the connection assembly in

[0031] Figure 6 For Figure 5 the structural diagram of the housing and the connection assembly in

[0032] Figure 7 For Figure 6 the cross-sectional view at A-A;

[0033] Figure 8 is Figure 7 an enlarged view of part C in

[0034] Figure 9 a structural diagram of a connection component provided by an embodiment of the present application;

[0035] Figure 10 is Figure 6 a sectional view taken along line B-B;

[0036] Figure 11 is Figure 7 an enlarged view of part D in

[0037] Reference numerals:

[0038] 1000 - electrical device; 100 - battery pack; 200 - electrical appliance device;

[0039] 1 - connection component; 11 - connector; 111 - fixing plate; 1111 - first avoidance hole; 112 - plugging body; 113 - limiting groove; 12 - mounting member; 121 - pressing plate; 1211 - through hole; 1212 - rib; 1213 - second avoidance hole; 122 - limiting plate; 123 - baffle; 124 - groove; 125 - first connection hole; 13 - first sealing ring; 131 - third avoidance hole; 14 - first connecting member; 15 - second sealing ring; 151 - sealing protrusion;

[0040] 2 - housing; 21 - accommodating cavity; 22 - bottom plate; 23 - mounting frame; 24 - anti-collision beam; 25 - mounting hole; 26 - mounting groove; 261 - bottom wall; 262 - side wall; 27 - second connection hole;

[0041] 3 - second connecting member. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc. is based on the orientation or relative positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. Without special instructions, under the condition of satisfying the relative positional relationship shown in the drawings, the above-described orientation description can be flexibly set during the actual application process.

[0044] The terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0045] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", and "communicated with" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection. It may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0046] In the embodiments of the present utility model, the terms "comprising", "including" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, article or device. Without further limitation, the element defined by the statement "including one..." does not exclude the existence of another identical element in the process, article or device including that element.

[0047] In the embodiments of the present utility model, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present utility model should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly speaking, using words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0048] A battery pack refers to a power storage device that combines multiple batteries to provide higher voltage or larger capacity, and is widely used in fields such as electric vehicles, electric bicycles, drones, consumer electronic devices, aerospace, military, and energy storage systems. The battery pack is often used as the power source of an electrical device and is one of the important components of the electrical device, and its safety is particularly important.

[0049] In the related art, through holes are provided on the housing of the battery pack, and the connector passes through the through holes to connect with the batteries inside the housing. The batteries can be charged or discharged through the connector. Among them, a sealing ring is usually sleeved on the connector to seal the gap between the connector and the housing. However, the end of the sealing ring close to the connector is usually exposed to the external environment and is easily corroded by substances such as moisture in the external environment, resulting in a decrease in the sealing effect or sealing failure, and the safety of the battery pack is relatively low.

[0050] Based on this, an embodiment of the present application provides an electrical device 1000, which can be a vehicle, a ship, an airplane, a drone, a portable electronic device, an industrial device, a household appliance, and an energy storage system, etc., and the present application does not make specific limitations thereto.

[0051] Exemplarily, as Figure 1 shown, Figure 1 is a structural diagram of an electrical device 1000 provided by an embodiment of the present application. The electrical device 1000 is a vehicle, and the vehicle can be a pure electric vehicle, a plug-in hybrid vehicle, etc., and the present application does not make specific limitations thereto.

[0052] In some embodiments, as Figure 1 shown, the electrical device 1000 includes a battery pack 100 and an electrical device 200. The battery pack 100 is connected to the electrical device 200, and the battery pack 100 can supply power to the electrical device 200. For example, when the electrical device 1000 is a vehicle, the electrical device 200 can be the motor of the vehicle, and the battery pack 100 can provide electrical energy for the motor of the vehicle, so as to drive the motor to rotate, and then provide power for the vehicle to make the vehicle move.

[0053] Among them, the battery pack 100 includes batteries, and the batteries can store electrical energy and supply the electrical energy to the electrical device 200.

[0054] It should be noted that the number of batteries can be one or more, and can be specifically selected according to the actual situation, and the present application does not make specific limitations thereto. For example, the number of batteries is multiple, and multiple batteries can store more electrical energy and can improve the endurance time of the electrical device 1000.

[0055] In addition, as Figure 2 shown, Figure 2The figure shows a structural diagram of a battery pack 100 provided by an embodiment of the present application. The battery pack 100 may further include a connection component 1, which is connected to the battery. The battery can be charged or discharged through the connection component 1. For example, the battery can be connected to an electrical device 200 through the connection component 1 to deliver electrical energy to the electrical device 200.

[0056] It can be understood that the connection component 1 can facilitate the connection between the battery and the electrical device 200, which is beneficial to reducing the assembly difficulty of the electrical device 1000 and thus improving the assembly efficiency of the electrical device 1000.

[0057] In some embodiments, referring to Figure 2 , the battery pack 100 includes a housing 2. The housing 2 has a receiving cavity 21, and the battery is disposed in the receiving cavity 21, while the connection component 1 can be disposed on the housing 2. Among them, the housing 2 can provide protection for the battery to reduce the risk of battery damage.

[0058] Exemplarily, as Figure 2 shown, the housing 2 includes a bottom plate 22 and a mounting frame 23. The mounting frame 23 is disposed on the bottom plate 22, and the mounting frame 23 and the bottom plate 22 enclose a receiving cavity 21 with an opening.

[0059] It should be noted that the connection component 1 can be disposed on the bottom plate 22 or on the mounting frame 23, and can be specifically selected according to actual situations. The present application does not make specific limitations in this regard. For example, when the connection component 1 is disposed on the mounting frame 23, it is convenient for the connection component 1 to be connected to the electrical device 200.

[0060] In addition, the housing 2 may further include a bumper beam 24, which is disposed in the receiving cavity 21. Both ends of the bumper beam 24 are connected to the mounting frame 23 and divide the receiving cavity 21 into multiple sub-cavities. In this case, multiple batteries can be disposed in one or more sub-cavities, which can be specifically selected according to actual situations. The present application does not make specific limitations in this regard.

[0061] It can be understood that the bumper beam 24 can increase the structural strength of the housing 2, and thus provide better protection for the battery in the event of a collision, which is beneficial to improving the safety of the battery pack 100.

[0062] In some embodiments, referring to Figure 3 , Figure 3 The figure shows an exploded view of a housing 2 and a connection component 1 provided by an embodiment of the present application. The connection component 1 includes a connector 11. An installation hole 25 communicating with the receiving cavity 21 is provided on the housing 2. The connector 11 passes through the installation hole 25 and is connected to the battery. Among them, the battery can be charged or discharged through the connector 11.

[0063] To facilitate the installation of the connector 11, the connection component 1 may further include a mounting member 12, and the connector 11 is fixed to the housing 2 through the mounting member 12.

[0064] Exemplarily, as Figure 4 shown, Figure 4 FIG. is a structural diagram of a mounting member 12 provided by an embodiment of the present application. The mounting member 12 includes a pressing plate 121 and a limiting plate 122, and the limiting plate 122 is disposed on the pressing plate 121.

[0065] Among them, a through hole 1211 is provided on the pressing plate 121, the limiting plate 122 is located on one side of the pressing plate 121 in the axial direction of the through hole 1211, and the limiting plate 122 is disposed around the through hole 1211 for one week. In this case, the limiting plate 122 can be set to penetrate into the mounting hole 25 on the housing 2 (as Figure 3 shown).

[0066] On this basis, referring to Figure 5 , Figure 5 is Figure 3 an assembly diagram of the housing 2 and the connection component 1 in. The pressing plate 121 is located on the circumferential side of the housing 2. The connector 11 penetrates into the through hole 1211 (as Figure 4 shown) and is connected to the mounting member 12. In this way, the connector 11 can be fixed to the housing 2 through the mounting member 12.

[0067] It can be understood that, compared with the connector 11, the size and structure of the mounting member 12 are convenient for design. Using the mounting member 12 to fix the connector 11 to the housing 2 is beneficial to reducing the installation difficulty of the connector 11 and improving the installation reliability.

[0068] In addition, as Figure 6 shown, Figure 6 is Figure 5 a structural diagram of the housing 2 and the connection component 1 in another angle. A rib 1212 can also be provided on the pressing plate 121 to improve the structural strength of the pressing plate 121. Among them, the number of the ribs 1212 can be multiple, and the multiple ribs 1212 can be arranged to cross each other.

[0069] It should be noted that, as Figure 3 and Figure 4 shown, the connection component 1 may further include a first sealing ring 13. The first sealing ring 13 is sleeved on the limiting plate 122, and the first sealing ring 13 is located between the pressing plate 121 and the housing 2. In this case, the rib 1212 can be provided on the surface of the pressing plate 121 facing away from the first sealing ring 13, and the rib 1212 can prevent the pressing plate 121 from deforming, so as to fix the first sealing ring 13 to the housing 2 more reliably.

[0070] Among them, the first sealing ring 13 can seal the gap between the mounting member 12 and the housing 2, thereby preventing moisture from entering the housing 2, and further improving the safety of the battery pack 100. It can be understood that the first sealing ring 13 can be made of silica gel.

[0071] In order to facilitate the installation of the connection component 1 onto the housing 2, the first sealing ring 13 can also be connected to the pressing plate 121 by means such as bonding or clamping. For example, the first sealing ring 13 is bonded to the pressing plate 121 through double-sided tape. In this way, the first sealing ring 13 and the mounting member 12 can be assembled with the housing 2 as a whole, which is beneficial to improving the assembly efficiency.

[0072] Among them, the limiting plate 122 on the mounting member 12 can block the end of the first sealing ring 13 close to the connector 11, thereby reducing the probability of the first sealing ring 13 coming into contact with substances such as moisture in the external environment, and further reducing the risk of corrosion of the first sealing ring 13. In this way, the reliability of the seal of the first sealing ring 13 can be improved, and further the safety of the battery pack 100 can be improved.

[0073] As Figure 7 shown, Figure 7 is Figure 6 a cross-sectional view at A-A. In order to better seal the gap between the mounting member 12 and the housing 2, the first sealing ring 13 can be set to abut against the two surfaces of the pressing plate 121 and the housing 2 that are close to each other. That is to say, after the assembly of the housing 2 and the connection component 1 is completed, the first sealing ring 13 is in a compressed state.

[0074] See Figure 8 , Figure 8 is Figure 7 an enlarged view of C in. The compression amount of the first sealing ring 13 can be set to be greater than or equal to 30%, that is to say, the reduced thickness L1 of the first sealing ring 13 after being compressed is greater than or equal to 30% of the thickness L2 of the first sealing ring 13 when it is not compressed. In this way, the first sealing ring 13 can achieve a better sealing effect. In addition, the compression amount of the first sealing ring 13 can also be set to be less than or equal to 70%, that is to say, the reduced thickness L1 of the first sealing ring 13 after being compressed is less than or equal to 70% of the thickness L2 of the first sealing ring 13 when it is not compressed. In this way, it is beneficial to reduce the installation difficulty of the first sealing ring 13, thereby improving the installation efficiency of the first sealing ring 13.

[0075] In some embodiments, as Figure 4 shown, the mounting member 12 further includes a baffle 123, the baffle 123 is arranged on the pressing plate 121, and the baffle 123 is arranged around the limiting plate 122 for one week. Among them, the baffle 123, the pressing plate 121 and the limiting plate 122 enclose a groove 124, and the first sealing ring 13 (as Figure 3is located within the groove 124 as shown.

[0076] Set in this way, the baffle 123 can block the end of the first sealing ring 13 away from the connector 11, thereby reducing the probability of the first sealing ring 13 coming into contact with substances such as moisture in the external environment, and further reducing the risk of corrosion of the first sealing ring 13. In this way, the sealing reliability of the first sealing ring 13 can be further improved, and thus the safety of the battery pack 100 can be improved.

[0077] In addition, as Figure 8 shown, the end of the baffle 123 close to the housing 2 can be set to contact the housing 2 to seal the gap between the baffle 123 and the housing 2. In this case, the baffle 123 can also play a role in sealing the gap between the mounting member 12 and the housing 2 of the battery pack 100, which is beneficial to improving the sealing performance and thus the safety of the battery pack 100.

[0078] Exemplarily, as Figure 8 shown, the baffle 123 is disposed between the pressing plate 121 and the housing 2, and the baffle 123 is disposed around the pressing plate 121 for one week, that is to say, the baffle 123 is connected to the edge of the pressing plate 121.

[0079] Set in this way, the baffle 123 can also strengthen the strength of the edge of the pressing plate 121, thereby reducing the risk of deformation of the pressing plate 121. In this case, the risk of sealing failure caused by insufficient compression amount in some areas of the first sealing ring 13 can be reduced, thereby improving the sealing reliability of the first sealing ring 13.

[0080] In some embodiments, as Figure 4 shown, the mounting member 12 is an integral member. For example, the mounting member 12 is a die-cast part manufactured by a die-casting process. Set in this way, it is beneficial to improve the structural strength of the mounting member 12.

[0081] In some embodiments, referring to Figure 3 , the connector 11 includes a fixing plate 111 and a plugging body 112 connected to each other. The plugging body 112 is connected to the battery, and the battery can be charged or discharged through the plugging body 112.

[0082] Among them, the plugging body 112 passes through the through hole 1211, the fixing plate 111 is disposed on the side of the pressing plate 121 facing away from the limiting plate 122, and the fixing plate 111 is connected to the mounting member 12.

[0083] On this basis, referring to Figure 4, the fixing plate 111 is at least partially located on the circumferential side of the through hole 1211. In this way, the plug-in body 112 can be inserted into the through hole 1211 from the side of the pressing plate 121 facing away from the limiting plate 122, and the fixing plate 111 can prevent the connector 11 from passing through the through hole 1211. Thus, the assembly efficiency of the connector 11 and the mounting member 12 can be improved.

[0084] It should be noted that, as Figure 9 shown, Figure 9 FIG. is a structural diagram of a connection assembly 1 provided by an embodiment of the present application. The connection assembly 1 may further include a first connecting member 14, and the first connecting member 14 is used to fix the connector 11 to the mounting member 12.

[0085] Exemplarily, as Figure 3 shown, a first avoiding hole 1111 is provided on the fixing plate 111, a first connecting hole 125 is provided on the mounting member 12, and a first connecting structure is provided in the first connecting hole 125. The first connecting member 14 passes through the first avoiding hole 1111 and is connected to the first connecting structure in the first connecting hole 125.

[0086] Wherein, the first connecting structure may be an internal thread, that is to say, the first connecting hole 125 is a threaded hole. In this case, the first connecting member 14 may be a bolt, and the external thread on the bolt can be screwed with the internal thread in the first connecting hole 125. Additionally, the first connecting structure may also be a card slot, at this time, the first connecting member 14 may be an elastic buckle, and the elastic buckle can be snapped into the card slot. Specifically, it can be selected according to the actual situation, and the present application does not make specific limitations on this.

[0087] It can be understood that the number of the first connecting members 14 may be one or more, and specifically can be selected according to the actual situation, and the present application does not make specific limitations on this. For example, the number of the first connecting members 14 is two.

[0088] As Figure 3 shown, when the first connecting members 14 are multiple, the number of the first avoiding holes 1111 and the first connecting holes 125 may also be multiple. On this basis, one first connecting member 14 can pass through one first avoiding hole 1111 and be connected to the first connecting structure in one first connecting hole 125. Arranged in this way, the connection reliability between the connector 11 and the mounting member 12 can be improved.

[0089] It should be noted that the first connection hole 125 can be set as a blind hole. In this way, not only can it prevent moisture from entering the groove 124 on the mounting member 12 through the first connection hole 125 and contacting the first sealing ring 13, but also prevent moisture from entering the accommodation cavity 21 of the housing 2 through the first connection hole 125 and contacting the battery. Thus, the reliability of the seal of the first sealing ring 13 can be improved, and the safety of the battery pack 100 can be enhanced. Additionally, the first connection hole 125 can also be set as a hole penetrating through the mounting member 12, and the present application does not make specific limitations thereon.

[0090] In some embodiments, refer to Figure 10 , Figure 10 is Figure 6 the cross-sectional view at B - B. The connection assembly 1 further includes a second sealing ring 15. The second sealing ring 15 is sleeved on the connector 11, and the second sealing ring 15 is located between the connector 11 and the limiting plate 122.

[0091] Among them, the second sealing ring 15 can seal the gap between the connector 11 and the limiting plate 122 of the mounting member 12, thereby preventing moisture from entering the housing 2 through the gap between the connector 11 and the limiting plate 122, and further improving the safety of the battery pack 100. It can be understood that the second sealing ring 15 can also be made of silica gel.

[0092] In order to better seal the gap between the connector 11 and the limiting plate 122, the second sealing ring 15 can be set to abut against the two surfaces of the connector 11 and the limiting plate 122 that are close to each other. That is to say, after the assembly of the connector 11 and the mounting member 12 is completed, the second sealing ring 15 is in a compressed state.

[0093] On this basis, refer to Figure 11 , Figure 11 is Figure 7 the enlarged view at D in

[0094] The compression amount of the second sealing ring 15 can be set to be greater than or equal to 10%, that is, the reduced thickness L3 of the second sealing ring 15 after being compressed is greater than or equal to 10% of the thickness L4 of the second sealing ring 15 before being compressed. In this way, the second sealing ring 15 can achieve a better sealing effect.

[0095] In some embodiments, refer to Figure 11, a sealing protrusion 151 is provided on the surface of the second sealing ring 15 close to the limiting plate 122, and the sealing protrusion 151 is arranged around the connector 11 for one week. That is to say, the second sealing ring 15 contacts the limiting plate 122 through the sealing protrusion 151.

[0096] Among them, the dimension of the sealing protrusion 151 in the axial direction of the through hole 1211 (as Figure 4 shown) is relatively small. In this way, the sealing protrusion 151 is more likely to deform, so that the two surfaces of the second sealing ring 15 and the limiting plate 122 close to each other are in full contact, which is beneficial to improving the sealing reliability of the second sealing ring 15.

[0097] Exemplarily, as Figure 11 shown, the two surfaces of the sealing protrusion 151 in the axial direction of the through hole 1211 are inclined surfaces, and the two ends of the two inclined surfaces close to the limiting plate 122 are inclined towards the direction of approaching each other. It should be noted that the above inclined surfaces can also be replaced by curved surfaces, and the present application does not make specific limitations on this.

[0098] Set in this way, the dimension of one end of the sealing protrusion 151 close to the limiting plate 122 in the axial direction of the through hole 1211 can be further reduced, so that the two surfaces of the second sealing ring 15 and the limiting plate 122 close to each other are in more full contact, so as to improve the sealing reliability of the second sealing ring 15.

[0099] In addition, the inclined surface can also play a guiding role during the assembly process, facilitating the insertion of the connector 11 with the second sealing ring 15 into the through hole 1211 of the mounting member 12. In this way, the difficulty of assembling the connector 11 with the second sealing ring 15 onto the mounting member 12 can be reduced, thereby improving the assembly efficiency of the connection assembly 1.

[0100] It should be noted that the number of the sealing protrusions 151 can be one or more, and can be specifically selected according to the actual situation, and the present application does not make specific limitations on this.

[0101] Among them, when the number of the sealing protrusions 151 is multiple, the multiple sealing protrusions 151 are arranged in sequence along the axial direction of the through hole 1211. In this way, the multiple sealing protrusions 151 can form multiple seals along the axial direction of the through hole 1211, and can further improve the sealing reliability of the second sealing ring 15.

[0102] Exemplarily, as Figure 11 shown, two sealing protrusions 151 are provided on the second sealing ring 15. In this case, the cross section of the second sealing ring 15 perpendicular to the circumferential direction of the second sealing ring 15 is approximately M-shaped.

[0103] In some embodiments, refer to Figure 11, a limiting groove 113 is provided on the connector 11, and the opening of the limiting groove 113 faces the limiting plate 122. The limiting groove 113 is arranged around the connector 11 for one week, and the end of the second sealing ring 15 facing away from the limiting plate 122 is located in the limiting groove 113.

[0104] Set in this way, during the process of assembling the connector 11 with the second sealing ring 15 onto the mounting member 12, the limiting groove 113 can prevent the second sealing ring 15 from moving axially along the through hole 1211 relative to the connector 11. In this way, the assembly efficiency of the connection assembly 1 can be improved.

[0105] In some embodiments, referring to Figure 3 , an installation groove 26 is provided on the surface of the housing 2 facing away from the accommodation cavity 21. The installation groove 26 includes a bottom wall 261 and a side wall 262 connected to each other. The side wall 262 is located on the side of the bottom wall 261 facing away from the accommodation cavity 21 (as Figure 2 shown), and the side wall 262 is arranged around the bottom wall 261 for one week.

[0106] On this basis, the installation hole 25 is provided on the bottom wall 261, and the mounting member 12 is located on the side of the side wall 262 close to the installation hole 25. That is to say, the side wall 262 is arranged around the mounting member 12 for one week. In this way, the side wall 262 can block the gap between the edge of the mounting member 12 and the housing 2, and can reduce the entry of moisture into the gap between the mounting member 12 and the housing 2 through the gap between the edge of the mounting member 12 and the housing 2.

[0107] Set in this way, on the one hand, it can reduce the risk of moisture contacting the first sealing ring 13, thereby reducing the risk of corrosion of the first sealing ring 13; on the other hand, it can reduce the risk of moisture entering the housing 2, thereby improving the safety of the battery pack 100.

[0108] Among them, referring to Figure 3 and Figure 8 , along the radial direction of the installation hole 25, the distance H between the side wall 262 of the installation groove 26 and the mounting member 12 can be set to be less than or equal to 5 mm. In this way, the side wall 262 can better block the gap between the edge of the mounting member 12 and the housing 2.

[0109] In addition, along the radial direction of the installation hole 25, the distance H between the side wall 262 of the installation groove 26 and the mounting member 12 can be set to be greater than or equal to 0.5 mm. In this way, it is convenient to assemble the mounting member 12 into the installation groove 26.

[0110] In some embodiments, referring to Figure 3 , the battery pack 100 further includes a second connecting member 3, and the second connecting member 3 is used to fix the mounting member 12 to the housing 2.

[0111] Exemplarily, such asFigure 3 and Figure 4 As shown in Figure 4 , the pressing plate 121 of the mounting member 12 is provided with a second avoidance hole 1213, the housing 2 is provided with a second connection hole 27, and a second connection structure is provided in the second connection hole 27. The second connecting member 3 passes through the second avoidance hole 1213 and is connected to the second connection structure in the second connection hole 27.

[0112] Among them, the second connection structure can be an internal thread, that is to say, the second connection hole 27 is a threaded hole. In this case, the second connecting member 3 can be a bolt, and the external thread on the bolt can be screwed with the internal thread in the second connection hole 27. In addition, the second connection structure can also be a card slot. At this time, the second connecting member 3 can be an elastic buckle, and the elastic buckle can be snapped into the card slot. Specifically, it can be selected according to the actual situation, and the present application does not make specific limitations on this.

[0113] It should be noted that the number of the second connecting members 3 can be one or more, and specifically can be selected according to the actual situation, and the present application does not make specific limitations on this. For example, the number of the second connecting members 3 is four.

[0114] Among them, when there are multiple second connecting members 3, the number of the second avoidance holes 1213 and the second connection holes 27 can also be multiple. On this basis, one second connecting member 3 can pass through one second avoidance hole 1213 and be connected to the second connection structure in one second connection hole 27. Set in this way, the reliability of the connection between the mounting member 12 and the housing 2 can be improved.

[0115] In addition, as Figure 3 shown, a third avoidance hole 131 can also be provided on the first sealing ring 13. At this time, the second connecting member 3 also passes through the third avoidance hole 131. In this way, the second connecting member 3 can also position the first sealing ring 13, which is convenient for the installation of the first sealing ring 13.

[0116] It should be noted that the second connection hole 27 can be set as a blind hole. In this way, it can prevent moisture from entering the accommodation cavity 21 of the housing 2 through the second connection hole 27 and contacting the battery, thereby improving the safety of the battery pack 100. In addition, the second connection hole 27 can also be set to communicate with the accommodation cavity 21, and the present application does not make specific limitations on this.

[0117] In the description of this specification, specific features, structures, materials or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0118] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A connection assembly, characterized in that: The connection component (1) comprises: A mounting member (12), wherein the mounting member (12) comprises: A pressing plate (121), wherein the pressing plate (121) is provided with a through hole (1211); a limiting plate (122), the limiting plate (122) being arranged on the pressing plate (121) and being located on one side of the pressing plate (121) in the axial direction of the through hole (1211); the limiting plate (122) being arranged around the through hole (1211); A first sealing ring (13), wherein the first sealing ring (13) is sleeved on the limiting plate (122); A connector (11), the connector (11) is inserted into the through hole (1211) and connected to the mounting member (12).

2. The connection assembly according to claim 1, characterized in that: The mounting member (12) further comprises: A baffle (123), wherein the baffle (123) is arranged on the pressure plate (121), and the baffle (123) is arranged around the limiting plate (122); The baffle plate (123), the pressure plate (121) and the limit plate (122) form a groove (124), and the first sealing ring (13) is located in the groove (124).

3. The connection assembly according to claim 1, characterized in that: The connector (11) comprises: a fixing plate (111), the fixing plate (111) being arranged on a side of the pressing plate (121) away from the limiting plate (122), and the fixing plate (111) being at least partially located on a peripheral side of the through hole (1211); the fixing plate (111) being connected to the mounting member (12); A plug-in body (112), the plug-in body (112) is inserted into the through hole (1211) and connected to the fixing plate (111).

4. The connection assembly according to claim 3, characterized in that: The connection component (1) further comprises: A first connecting member (14); The fixing plate (111) is provided with a first avoidance hole (1111), the mounting member (12) is provided with a first connection hole (125), and a first connection structure is provided in the first connection hole (125); the first connection member (14) passes through the first avoidance hole (1111) and is connected to the first connection structure in the first connection hole (125); Wherein, the first connecting hole (125) is a blind hole.

5. The connection assembly according to claim 1, characterized in that: The first sealing ring (13) is connected to the pressing plate (121).

6. The connection assembly according to claim 1, characterized in that: A convex rib (1212) is provided on the surface of the pressure plate (121) facing away from the first sealing ring (13).

7. The connection assembly according to any one of claims 1 to 6, characterized in that: The connection component (1) further comprises: A second sealing ring (15), wherein the second sealing ring (15) is sleeved on the connector (11), and the second sealing ring (15) is located between the connector (11) and the limiting plate (122).

8. The connection assembly according to claim 7, characterized in that: A sealing protrusion (151) is provided on the surface of the second sealing ring (15) close to the limiting plate (122), and the sealing protrusion (151) is arranged around the connector (11).

9. The connection assembly according to claim 8, characterized in that: The two surfaces of the sealing protrusion (151) in the axial direction of the through hole (1211) are inclined surfaces, and the two ends of the two inclined surfaces close to the limiting plate (122) are inclined in a direction approaching each other.

10. The connection assembly according to claim 8, characterized in that The second sealing ring (15) is provided with a plurality of sealing protrusions (151), and the plurality of sealing protrusions (151) are arranged in sequence along the axial direction of the through hole (1211).

11. The connection assembly according to claim 7, characterized in that: The connector (11) is provided with a limiting groove (113), the opening of the limiting groove (113) faces the limiting plate (122); the limiting groove (113) is arranged around the connector (11), and the end of the second sealing ring (15) facing away from the limiting plate (122) is located in the limiting groove (113).

12. A battery pack, characterized in that: The battery pack (100) comprises: Battery; The connection assembly (1) according to any one of claims 1 to 11, wherein the connector (11) in the connection assembly (1) is connected to the battery, and the battery can be charged or discharged through the connector (11).

13. The battery pack according to claim 12, characterized in that: The battery pack (100) further includes: A housing (2), the housing (2) having a receiving cavity (21), the battery being arranged in the receiving cavity (21), and the connecting assembly (1) being arranged on the housing (2); The shell (2) is provided with a mounting hole (25) connected to the accommodating cavity (21), and the limiting plate (122) of the mounting member (12) is inserted into the mounting hole (25); the pressure plate (121) of the mounting member (12) is located on the peripheral side of the shell (2), and the first sealing ring (13) is located between the pressure plate (121) and the shell (2).

14. The battery pack according to claim 13, characterized in that: A mounting groove (26) is provided on the surface of the shell (2) facing away from the accommodating cavity (21); the mounting groove (26) comprises a bottom wall (261) and a side wall (262) connected to each other, the side wall (262) is located on a side of the bottom wall (261) facing away from the accommodating cavity (21), and the side wall (262) is arranged around the bottom wall (261); Wherein, the mounting hole (25) is arranged on the bottom wall (261), and the mounting member (12) is located on a side of the side wall (262) close to the mounting hole (25).

15. The battery pack according to claim 14, characterized in that: Along the radial direction of the mounting hole (25), a distance H between the side wall (262) and the mounting member (12) is less than or equal to 5 mm.

16. The battery pack according to claim 14, characterized in that: Along the radial direction of the mounting hole (25), a distance H between the side wall (262) and the mounting member (12) is greater than or equal to 0.5 mm.

17. The battery pack according to claim 13, characterized in that: The battery pack (100) further includes: A second connecting member (3); The pressing plate (121) of the mounting member (12) is provided with a second avoidance hole (1213), the housing (2) is provided with a second connection hole (27), and a second connection structure is provided in the second connection hole (27); the second connection member (3) passes through the second avoidance hole (1213) and is connected to the second connection structure in the second connection hole (27); Wherein, the second connecting hole (27) is a blind hole.

18. An electrical device, characterized in that: include: Electrical device (200); The battery pack (100) according to any one of claims 12 to 17, wherein the battery pack (100) is connected to the electrical device (200), and the battery pack (100) is used to supply power to the electrical device (200).

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