Electrical equipment, battery pack and electric equipment

Abstract

The invention discloses electrical equipment, a battery pack and electric equipment. The electrical equipment comprises a shell, a connector and a sealing piece. The housing includes a first opening. The connector is arranged in the first opening. The sealing piece surrounds the outer side of the connector, the sealing piece comprises a base part and an inclined part which are arranged in the first direction, in the first direction, the base part comprises a first surface facing the connector, and the connector is connected to the first surface. The inclined part comprises a first convex part facing the connector and a second convex part facing the shell, the first convex part and the second convex part are located on the two opposite sides of the inclined part, the first convex part is compressed and connected to the connector, and the second convex part is compressed and connected to the shell.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to an electrical device, a battery pack, and an electrical device. Background Art

[0002] With the continuous updating and development of battery technology, the application fields of batteries are also expanding. The waterproof problem of batteries has attracted more and more public attention. Figure 1 As shown, currently, waterproofing is generally achieved by locking the connector 20 in the vertical direction X with screws, and pressing the seal 3 against the housing 1 in the horizontal direction through the connector 2. The seal 3 is provided with raised points on the upper and lower sides to enhance the waterproof effect, but the waterproof effect is limited and needs further improvement. Summary of the Invention

[0003] In view of this, it is necessary to provide an electrical device, a battery pack and an electrical device with improved waterproof level.

[0004] An embodiment of the present application provides an electrical device comprising a housing, a connector, and a seal. The housing comprises a first opening. The connector is disposed at the first opening. The seal surrounds the outside of the connector, and the seal comprises a base and an inclined portion arranged along a first direction. Along the first direction, the base comprises a first surface facing the connector, and the connector is connected to the first surface. The inclined portion comprises a first protrusion facing the connector and a second protrusion facing the housing, the first protrusion and the second protrusion being located on opposite sides of the inclined portion, the first protrusion being compressed and connected to the connector, and the second protrusion being compressed and connected to the housing.

[0005] A first sealing interface is formed by connecting the connector to the first surface. Downward pressure from the connector is transmitted to the inclined portion through the base. The inclined portion increases the sealing pressure, compressing and connecting the first protrusion to the connector and the second protrusion to the housing, forming a second sealing interface. This improves sealing and enhances the waterproofing level. Furthermore, this second sealing interface helps reduce the extension width of the first sealing interface, reducing the horizontal space occupied by the first sealing interface. The interference fit between the housing, the inclined portion, and the connector helps compensate for assembly gaps between the connector and the housing caused by manufacturing tolerances.

[0006] In one or more of the above optional embodiments, the first surface is a flat surface. The flat first surface reduces and disperses the downward pressure of the connector, facilitates the transmission of the downward pressure of the connector to the inclined portion, increases the sealing pressure between the first protrusion and the connector, and increases the sealing pressure between the second protrusion and the housing, increases the compression of the first and second protrusions, and improves the sealing performance.

[0007] In one or more of the above optional embodiments, the base includes a second surface connected to the first surface, the second surface facing the housing, and being a flat surface. The second surface is not provided with a protrusion, thereby reducing the downward pressure of the connector from the protrusion on the second surface, thereby facilitating the transfer of the downward pressure of the connector to the inclined portion, thereby increasing the sealing pressure between the first protrusion and the connector and the sealing pressure between the second protrusion and the housing, and thereby increasing the compression of the first and second protrusions, thereby improving the sealing performance.

[0008] In one or more of the above optional embodiments, there is a first gap between the second surface and the shell, and the shell is provided with a second opening, which connects the first gap and the outside of the shell, so as to facilitate the discharge of water accumulated in the first opening, reduce water accumulation at the sealing interface between the second protrusion and the shell, and facilitate the disassembly and replacement of the connector through the second opening.

[0009] In one or more of the above optional embodiments, the inclined portion includes an inclined surface toward the housing, the second protrusion protrudes from the inclined surface, and the inclined surface forms an angle α with the first direction, where 10°≤α≤30°. When α is ≥10°, the sealing pressure between the inclined portion and the housing is increased, thereby improving the sealing performance. When α is ≤30°, the area of the sealing interface formed by the inclined surface and the housing is increased, thereby improving the sealing performance.

[0010] In one or more optional embodiments above, the connector includes a first fixing portion, the base includes a first extension portion, the first fixing portion and the first extension portion are arranged along a first direction, and the first extension portion is provided with a first through hole. The housing includes a boss, the boss is provided in the first through hole, and the first extension portion is compressed between the first fixing portion and the housing. The electrical device includes a fastener, the fastener passes through the first fixing portion and the first through hole, and fixes the connector, the seal and the housing. The boss limits the amount of compression of the first extension portion, thereby reducing excessive compression of the first extension portion, causing the portion of the base connected to the inclined portion to warp, affecting the sealing pressure between the inclined portion and the connector, and the sealing pressure between the inclined portion and the housing.

[0011] In one or more of the above optional embodiments, along the first direction, the connector includes a first surface facing the first surface, the first surface being connected to the first surface, the portion of the first surface that overlaps the first surface being a sealing surface, the sealing surface being annular, and the width h of the sealing surface being 1.5 mm ≤ h ≤ 4 mm. When h is ≥ 1.5 mm, increasing the width of the sealing surface facilitates improving the sealing performance of the sealing surface, and when h is ≤ 4 mm, reducing the space occupied by the sealing surface.

[0012] In one or more optional embodiments above, 1.5 mm ≤ h ≤ 3 mm. On the basis of improving the sealing performance of the sealing surface, the space occupied by the sealing surface is further reduced.

[0013] In one or more of the above optional embodiments, the connector includes a second surface facing the housing, the second surface being flush with the second surface, or the second surface extending beyond the second surface by a width d, where 0 < d ≤ 0.5 mm. Reducing the portion of the first connecting portion extending beyond the second surface disperses the downward pressure on the connector, facilitating transmission of the downward pressure on the connector to the inclined portion. This increases the sealing pressure between the first protrusion and the connector, and between the second protrusion and the housing, thereby increasing the compression of the first and second protrusions and improving sealing performance.

[0014] In one or more of the above optional embodiments, the connector includes a first part and a second part, the second part protrudes toward the outside of the connector relative to the first part, the seal is located below the second part, the inclined portion is located between the first part and the shell, and the first protrusion is compressed and connected to the first part, which helps to further reduce the space occupied by the seal.

[0015] In one or more of the above optional embodiments, the material of the sealing element includes silicone rubber.

[0016] In one or more optional embodiments above, the base includes a third surface connected to the first surface and facing the connector. The third surface is provided with a third protrusion, which is conducive to improving the sealing between the base and the connector.

[0017] In one or more of the above optional embodiments, the connector includes a first connecting portion, a second connecting portion, and a terminal. The terminal is provided on the second connecting portion. The first connecting portion surrounds the outside of the second connecting portion and forms a second gap with the second connecting portion, the second gap being configured to be pluggable with an external connector. The first connecting portion includes a first portion and a second portion.

[0018] In one or more optional embodiments above, the first connecting portion and the sealing member are arranged along a first direction. Along the first direction, the first surface is a surface of the first connecting portion facing the sealing member.

[0019] In one or more optional embodiments above, the first gap and the second opening are configured to disassemble the connector, and the connector is removed from the first opening through the first gap and the second opening, so as to facilitate replacement of the connector.

[0020] In one or more of the above optional embodiments, the first surface contacts and connects the first side.

[0021] In one or more optional embodiments above, the shell includes a connecting surface connected to the second protrusion, and the connecting surface forms an angle with the first direction, α is equal to β, which is conducive to further enhancing the sealing effect.

[0022] In one or more of the above optional embodiments, a third gap is formed between the second portion and the housing, and the third gap is connected to the first gap along the first direction. The third gap is connected to the second opening, which facilitates disassembly of the connector by moving the connector in a direction opposite to the first direction.

[0023] An embodiment of the present application provides a battery pack, comprising a cell assembly and an electrical device according to any one of the above embodiments, wherein the cell assembly is disposed in a housing, and the electrical device comprises a wiring harness connecting a connector and the cell assembly, wherein the connector is configured to be connected to an electrical device.

[0024] In one or more optional embodiments above, the length of the wiring harness is greater than the length of the connector along the first direction, so as to facilitate pulling the connector out of the first opening, disassembling the connector outside the housing, and replacing the connector.

[0025] An embodiment of the present application provides an electric device including the battery pack according to any one of the above embodiments.

[0026] The aforementioned electrical equipment, battery pack, and electrical equipment are connected to the first surface via a connector to form a first sealing interface. The downward pressure of the connector is transmitted to the inclined portion via the base. The inclined portion increases the sealing pressure, compressing and connecting the first protrusion to the connector and the second protrusion to the housing, forming a second sealing interface, enhancing sealing and improving the waterproofing level. Furthermore, the second sealing interface helps reduce the extended width of the first sealing interface and the horizontal space occupied by the first sealing interface. The interference fit between the housing, the inclined portion, and the connector helps compensate for assembly gaps between the connector and the housing caused by manufacturing tolerances. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The figure shows a structural diagram of an existing waterproof method.

[0028] Figure 2 Shown are schematic structural diagrams of electrical equipment in some embodiments.

[0029] Figure 3 A partial structural schematic diagram of an electrical device from another perspective in some embodiments is shown.

[0030] Figure 4 Schematic diagrams of the structures of some shells in some embodiments are shown.

[0031] Figure 5 Shown Figure 3 Schematic diagram of the partial cross section of the electrical equipment along III-III.

[0032] Figure 6 Shown Figure 5 Enlarged schematic diagram of point A in the middle.

[0033] Figure 7 A cross-sectional schematic diagram of some embodiments is shown in which the first protrusion and the second protrusion are in a compressed state.

[0034] Figure 8 Schematic diagrams of the structures of sealing members in some embodiments are shown.

[0035] Figure 9 A schematic structural diagram of a sealing member from another perspective in some embodiments is shown.

[0036] Figure 10 A partial cross-sectional schematic diagram of an electrical device is shown.

[0037] Figure 11 An exploded schematic diagram of a battery pack in some embodiments is shown.

[0038] Figure 12 A simplified schematic diagram of electrical equipment in some embodiments is shown.

[0039] Description of main component symbols: Electrical Equipment 100 Housing 10 First housing 10a Second housing 10b Containment Space 110 Connection surface 111 First opening 11 Boss 12 The third through hole 121 Recess 13 Fixed platform 131 Second opening 14 Fixing hole 15 Connector 20 First page 201 Second side 202 Second gap 203 First connecting portion 21 Part 1 21a Part II 21b First fixing portion 211 Second through hole 2111 Second connecting portion 22 Terminal 23 Seal 30 base 31 First surface 311 Second surface 312 Third surface 313 First extension portion 314 First through hole 3141 Inclined portion 32 first convex portion 321 Second convex portion 322 Third convex portion 323 Inclined surface 301 Fourth surface 302 Fasteners 101 Sealing surface 102 First gap 103 Wiring Harness 104 First conductive line 104a Second conductive line 104b Battery Pack 200 Battery cell assembly 210 Battery cell 210a Electrode terminal 210b Circuit board 220 Conductive sheet 220a Sampling line 230 Power harness assembly 240 Electrical equipment 300 First direction X Second direction Y The third direction Z The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0041] When a component is referred to as being “disposed on” another component, it can be directly disposed on the other component or there may be a component intervening therebetween. When a component is referred to as being “connected to” another component, it can be directly connected to the other component or there may be a component intervening therebetween.

[0042] When one component is fixed to another component, the fixing method includes but is not limited to snap connection, bonding, abutment, and fastener connection, such as a screw.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0044] It can be understood that the term "perpendicular" is used to describe the ideal state between two components. In actual production or use, there may be a state between the two components that is approximately perpendicular or equal. For example, combined with numerical descriptions, perpendicular can refer to the angle between two straight lines being in the range of 90°±10°, perpendicular can also refer to the dihedral angle between two planes being in the range of 90°±10°, and perpendicular can also refer to the angle between a straight line and a plane being in the range of 90°±10°. The two components described as "perpendicular" may not be absolute straight lines or planes, but may be roughly straight lines or planes. From a macroscopic perspective, a component can be considered a "straight line" or a "plane" if the overall extension direction is a straight line or a plane.

[0045] Unless otherwise defined, the term "plurality" herein, when used to describe the number of components, specifically means that the components are two or more.

[0046] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features of the embodiments may be combined with each other.

[0047] See also Figures 2 to 7 An embodiment of the present application provides an electrical device 100 , including a housing 10 and a connector 20 . The housing 10 includes a first opening 11 , and the connector 20 is disposed in the first opening 11 .

[0048] In some embodiments, the electrical device 100 includes electrical components, which are located in the housing 10. The electrical components include, but are not limited to, wiring harnesses, circuit boards, electronic components, and the like.

[0049] In some embodiments, the electrical device 100 includes a seal 30 that surrounds the outside of the connector 20. The seal 30 includes a base 31 and an inclined portion 32 arranged along a first direction X. Along the first direction X, the base 31 includes a first surface 311 facing the connector 20, and the connector 20 is connected to the first surface 311.

[0050] In some embodiments, the connector 20 contacts the first surface 311 .

[0051] In some embodiments, the connector 20 is configured to be inserted into the first opening 11 along the first direction X.

[0052] In some embodiments, the inclined portion 32 is provided at the first opening 11. The inclined portion 32 includes a first protrusion 321 facing the connector 20 and a second protrusion 322 facing the housing 10. The first protrusion 321 and the second protrusion 322 are located on opposite sides of the inclined portion 32. The first protrusion 321 is compressed and connected to the connector 20, and the second protrusion 322 is compressed and connected to the housing 10.

[0053] The present application forms a first sealing interface by connecting the first surface 311 through the connector 20. During the assembly process, the downward pressure of the connector 20 is transmitted to the inclined portion 32 through the base 31, and the sealing pressure is increased by the inclined portion 32, so that the first protrusion 321 is compressed and connected to the connector 20, and the second protrusion 322 is compressed and connected to the housing 10, forming a second sealing interface, increasing the sealing performance and improving the waterproof level. In addition, the second sealing interface is conducive to reducing the extension width of the first sealing interface and reducing the space occupied by the first sealing interface in the horizontal direction. The interference fit between the housing 10, the inclined portion 32 and the connector 20 is conducive to compensating the assembly gap between the connector 20 and the housing 10 caused by manufacturing tolerances.

[0054] See also Figure 6 and Figure 7 , Figure 7 The seal 30 is shown in a compressed state, with the fastener 101 securing the connector 20 , the seal 30 , and the housing 10 . Figure 6 and Figure 7 The difference is that the seal 30 is shown in a pre-compression state. Figure 5 yes Figure 3 The schematic diagram of the electrical equipment along III-III is for easy observation. Figure 5 The seal 30 is shown in the state before compression.

[0055] See also Figures 5 to 9 In some embodiments, the first surface 311 is a flat surface. A flat surface means that the first surface 311 is not provided with a protrusion for connecting with the connector 20. The connector 20 contacts and connects with the first surface 311, and the downward pressure of the connector 20 acts on the first surface 311. The flat first surface 311 reduces and disperses the downward pressure of the connector 20, which helps to transfer the downward pressure of the connector 20 to the inclined portion 32, increasing the sealing pressure between the first protrusion 321 and the connector 20 and the sealing pressure between the second protrusion 322 and the housing 10, increasing the compression of the first protrusion 321 and the second protrusion 322, and improving the sealing performance.

[0056] In some embodiments, the base 31 includes a second surface 312 connected to the first surface 311 and facing the housing 10. The second surface 312 is the outer side of the base 31. The second surface 312 is flat and has no protrusions. This reduces the downward pressure of the connector 20 caused by the protrusions on the second surface 312, which helps transfer the downward pressure of the connector 20 to the inclined portion 32. This increases the sealing pressure between the first protrusion 321 and the connector 20 and the sealing pressure between the second protrusion 322 and the housing 10, increases the compression between the first protrusion 321 and the second protrusion 322, and improves the sealing performance.

[0057] In some embodiments, the base 31 includes a third surface 313 connected to the first surface 311 and facing the connector 20. The third surface 313 is the inner side of the base 31. The third surface 313 is provided with a third protrusion 323, which helps to improve the sealing between the base 31 and the connector 20.

[0058] See also Figure 7 In some embodiments, along the first direction X, the connector 20 includes a first surface 201 facing the first surface 311. The first surface 311 connects to the first surface 201, and the overlapping portion of the first surface 201 and the first surface 311 serves as the sealing surface 102. The sealing surface 102 is annular, and the width h of the sealing surface 102 is 1.5 mm ≤ h ≤ 4 mm. When h ≥ 1.5 mm, increasing the width of the sealing surface 102 helps improve the sealing performance of the sealing surface 102. When h ≤ 4 mm, the space occupied by the sealing surface 102 is reduced.

[0059] In some embodiments, the first surface 311 contacts and connects to the first side 201 .

[0060] Optionally, h can be any one of 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, 3 mm, 3.1 mm, 3.2 mm, 3.3 mm, 3.4 mm, 3.5 mm, 3.6 mm, 3.7 mm, 3.8 mm, 3.9 mm, and 4 mm, or a range consisting of any two of them.

[0061] In some embodiments, 1.5 mm ≤ h ≤ 3 mm, which further reduces the space occupied by the sealing surface 102 while improving the sealing performance of the sealing surface 102 .

[0062] In some embodiments, connector 20 includes a second surface 202, which connects to first surface 201 and faces housing 10. Second surface 202 is the outer side of connector 20. The width of second surface 312 extending beyond second surface 202 is d, where 0 < d ≤ 0.5 mm. Reducing the portion of first connecting portion 21 extending beyond second surface 202 disperses downward pressure on connector 20, facilitating transmission of downward pressure from connector 20 to inclined portion 32. This increases the sealing pressure between first protrusion 321 and connector 20, and between second protrusion 322 and housing 10, thereby increasing the compression between first protrusion 321 and second protrusion 322 and improving sealing performance. d is measured after fastener 101 secures connector 20, seal 30, and housing 10.

[0063] Optionally, d may be any one of 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, and 0.5 mm, or a range consisting of any two of the two.

[0064] In some embodiments, the second surface 202 is flush with the second surface 312, further reducing the downward pressure exerted by the first connection portion 21 on the connector 20. This facilitates transferring the downward pressure of the connector 20 to the inclined portion 32, increasing the sealing pressure between the first protrusion 321 and the connector 20 and between the second protrusion 322 and the housing 10, and increasing the compression between the first protrusion 321 and the second protrusion 322, thereby improving the sealing performance. The second surface 202 being flush with the second surface 312 means that they are flush after the fastener 101 secures the connector 20, the seal 30, and the housing 10.

[0065] In some embodiments, the connector 20 includes a first portion 21a and a second portion 21b. The second portion 21b protrudes outward from the first portion 21a. The seal 30 is located below the second portion 21b. The inclined portion 32 is located between the first portion 21a and the housing 10. The first protrusion 321 is compressed and connected to the first portion 21a. This helps further reduce the space occupied by the seal 30.

[0066] See also Figure 5 and Figure 6 In some embodiments, the connector 20 includes a first connecting portion 21, a second connecting portion 22, and a terminal 23. The terminal 23 is provided on the second connecting portion 22. The first connecting portion 21 surrounds the outside of the second connecting portion 22 and forms a second gap 203 with the second connecting portion 22. The second gap 203 is configured to be plugged into an external connector. The first connecting portion 21 includes a first portion 21a and a second portion 21b.

[0067] In some embodiments, the first connection portion 21 and the sealing member 30 are arranged along a first direction X. Along the first direction X, the first surface 201 is the surface of the first connection portion 21 facing the sealing member 30 . When the first connection portion 21 is fixed to the housing 10 , the downward pressure of the first connection portion 21 compresses the sealing member 30 , so that the first surface 201 and the first surface 311 are tightly connected to form a sealing surface 102 .

[0068] See also Figure 3 、 Figure 4 、 Figures 8 to 10 In some embodiments, the connector 20 includes a first fixing portion 211 , the base 31 includes a first extending portion 314 , and the first fixing portion 211 and the first extending portion 314 are arranged along the first direction X.

[0069] In some embodiments, the first extension portion 314 is provided with a first through-hole 3141, and the housing 10 includes a boss 12 disposed in the first through-hole 3141. The first extension portion 314 is compressed between the first fixing portion 211 and the housing 10, with the first fixing portion 211 contacting the connecting boss 12. The boss 12 limits the compression of the first extension portion 314, thereby reducing the possibility of excessive compression of the first extension portion 314, which could cause the portion connecting the base portion 31 to the inclined portion 32 to tilt, thereby affecting the sealing pressure between the inclined portion 32 and the connector 20, and between the inclined portion 32 and the housing 10.

[0070] In some embodiments, the first fixing portion 211 has a second through hole 2111 , the boss 12 has a third through hole 121 , and the fastener 101 passes through the second through hole 2111 , the first through hole 3141 , and the third through hole 121 in sequence and is locked to the housing 10 .

[0071] See also Figure 2 and Figure 10 In some embodiments, the electrical device 100 includes a fastener 101, the housing 10 includes a fixing hole 15, and the fastener 101 is fixedly connected to the fixing hole 15. The fastener 101 locks the connector 20 and the seal 30 in the fixing hole 15 and provides downward pressure on the connector 20. Optionally, the fastener 101 includes a screw.

[0072] See also Figure 6 and Figure 7 In some embodiments, the inclined portion 32 includes an inclined surface 301 facing the housing 10, and the second protrusion 322 protrudes from the inclined surface 301. The inclined surface 301 is the outer side of the inclined portion 301. The inclined surface 301 forms an angle α with the first direction X, where 10°≤α≤30°. When α is ≥10°, the sealing pressure between the inclined portion 32 and the housing 10 is increased, which helps improve the sealing performance. When α is ≤30°, the area of the sealing interface formed by the inclined surface 301 and the housing 10 is increased, which helps improve the sealing performance.

[0073] Optionally, α can be any one of 10°, 11°, 12°, 13°, 14°, 15°, 16°, 17°, 18°, 19°, 20°, 21°, 22°, 23°, 24°, 25°, 26°, 27°, 28°, 29°, 30°, or a range consisting of any two of them.

[0074] In some embodiments, the housing 10 includes a connecting surface 111 connected to the second protrusion 322 . The connecting surface 111 forms an angle β with the first direction X, where α is equal to β, which is beneficial to further enhance the sealing effect.

[0075] In some embodiments, the inclined portion 32 includes a fourth surface 302 , the fourth surface 302 faces the second connecting portion 22 , and the first protrusion 321 protrudes from the fourth surface 302 . The fourth surface 302 is an outer side surface of the inclined portion 32 .

[0076] In some embodiments, the fourth surface 302 is provided with a plurality of first protrusions 321 , which surround the outer side of the first connecting portion 21 and are spaced apart along the first direction X. The plurality of first protrusions 321 and the second connecting portion 22 form a plurality of spaced apart sealing interfaces, which facilitates improved sealing performance.

[0077] In some embodiments, the inclined portion 322 is provided with a plurality of second protrusions 322. The plurality of second protrusions 322 and the housing 10 form a plurality of sealing interfaces arranged at intervals, which is conducive to improving the sealing performance.

[0078] See also Figures 3 to 6 In some embodiments, there is a first gap 103 between the second surface 312 and the shell 10, and the shell 10 is provided with a second opening 14, which connects the first gap 103 and the outside of the shell 10, so as to facilitate the discharge of the accumulated water in the first opening 11 and reduce the water accumulation at the sealing interface between the second protrusion 322 and the shell 10.

[0079] See also Figures 3 to 6 In some embodiments, the second surface 202 is the outer side of the first connecting portion 21 away from the second connecting portion 22 .

[0080] In some embodiments, the first gap 103 and the second opening 14 are configured to disassemble the connector 20 . The connector 20 can be removed from the first opening 11 through the first gap 103 and the second opening 14 , making it easier to replace the connector 20 .

[0081] See also Figure 3In some embodiments, a third gap 204 is formed between the second portion 21b and the housing. The third gap 204 communicates with the first gap 103 along the first direction X. The third gap 204 communicates with the second opening 14, which facilitates disassembly of the connector 20 by moving the connector 20 in a direction opposite to the first direction X.

[0082] In some embodiments, the material of the sealing member 30 includes silicone rubber, and the resilience of the sealing member 30 is not less than 97%, which is beneficial to improving the sealing performance.

[0083] In some embodiments, the base portion 31 and the inclined portion 32 are integrally formed. Alternatively, the base portion 31 and the inclined portion 32 are integrally injection molded.

[0084] See also Figure 11 The present application also provides a battery pack 200 using the above-mentioned electrical device 100. The battery pack 200 includes a battery cell assembly 210. The battery cell assembly 210 is disposed in the housing 10 and electrically connected to the connector 20.

[0085] See also Figure 11 In some embodiments, the electrical device 100 includes a wiring harness 104 , which is disposed in the housing 10 . The wiring harness 104 connects the battery cell assembly 210 and the connector 20 , and the connector 20 is configured to be connected to an electrical device.

[0086] In some embodiments, the length L1 of the wiring harness 104 is greater than the length L2 of the connector 20 along the first direction X, which facilitates pulling the connector 20 out of the first opening 11 and removing the connector 20 from the housing 10 to facilitate replacement of the connector 20 .

[0087] In some embodiments, L1-L2>20mm, which is conducive to convenient replacement of connector 20.

[0088] In some embodiments, the housing 10 includes a first housing 10a and a second housing 10b arranged along a first direction X. The first housing 10 is connected to the second housing 10b to form a receiving space 110. The battery cell assembly 210 is disposed in the receiving space 110. The first direction X is perpendicular to the second direction Y.

[0089] In some embodiments, the battery cell assembly 210 includes a plurality of battery cells 210 a arranged along a second direction Y. Each battery cell 210 a includes an electrode terminal 210 b. The battery pack 200 includes a circuit board 220. The circuit board 220 and the battery cells 210 a are arranged along a third direction. The circuit board 220 is provided with conductive pads 220 a. The electrode terminals 210 b of adjacent battery cells 210 a pass through the circuit board 220 and are stacked to connect the conductive pads 220 a. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0090] In some embodiments, the wiring harness 104 includes a first wire 104a and a second wire 104b. The first wire 104a is electrically connected to the positive terminal of the battery cell assembly 210, and the second wire 104b is electrically connected to the negative terminal of the battery cell assembly 210. The length L1 of the wiring harness 104 is the shorter of the first wire 104a and the second wire 104b.

[0091] In some embodiments, the battery pack 200 includes a power harness assembly 240 , which connects the positive common of the battery cell assembly 210 to the first wire 104 a and connects the negative common of the battery cell assembly 210 to the second wire 104 b .

[0092] Optionally, the circuit board 220 includes a BMS component (Battery Management System), which includes multiple electronic components. The multiple electronic components can realize functions such as control, protection, communication, power calculation, signal transmission, and power transmission of the battery cell 210.

[0093] Optionally, the circuit board 220 includes a printed circuit board (PCB).

[0094] In some embodiments, the battery pack 200 includes a sampling component 230 , which is connected to the circuit board 220 and the connector 20 , and is used to collect and transmit information such as temperature, current, voltage, and resistance of the battery cell 210 .

[0095] See also Figure 12 The present application also provides an electrical device 300 using the battery pack 200. In one embodiment, the electrical device 300 of the present application may be, but is not limited to, electronic equipment, drones, backup power supplies, electric vehicles, electric motorcycles, electric power-assisted bicycles, power tools, large household battery modules, etc.

[0096] Those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present application and are not intended to limit the present application. As long as they are within the spirit of the present application, appropriate changes and modifications to the above embodiments fall within the scope disclosed in the present application.

Claims

1. An electrical device, characterized in that: include: a housing comprising a first opening; a connector, disposed at the first opening; a seal surrounding the outside of the connector, the seal including a base and an inclined portion arranged along a first direction, wherein along the first direction, the base includes a first surface facing the connector, and the connector is connected to the first surface; The inclined portion includes a first protrusion toward the connector and a second protrusion toward the shell, the first protrusion and the second protrusion are located on opposite sides of the inclined portion, the first protrusion is compressed and connected to the connector, and the second protrusion is compressed and connected to the shell.

2. The electrical device according to claim 1, wherein The first surface is a flat surface.

3. The electrical device according to any one of claims 1 to 2, characterized in that: The base includes a second surface connected to the first surface, the second surface faces the housing, and the second surface is a flat surface.

4. The electrical device according to claim 3, wherein: A first gap is defined between the second surface and the shell. The shell is provided with a second opening, and the second opening communicates with the first gap and the exterior of the shell.

5. The electrical device according to any one of claims 1 to 4, characterized in that: The inclined portion includes an inclined surface facing the housing, the second convex portion protrudes from the inclined surface, and the inclined surface forms an angle α with the first direction, where 10°≤α≤30°.

6. The electrical device according to any one of claims 1 to 5, characterized in that: The connector includes a first fixing portion, the base includes a first extending portion, the first fixing portion and the first extending portion are arranged along the first direction, and the first extending portion is provided with a first through hole; The housing includes a boss, the boss is provided in the first through hole, and the first extension portion is compressed between the first fixing portion and the housing; The electrical device includes a fastener, which passes through the first fixing portion and the first through hole to fix the connector, the sealing member, and the housing.

7. The electrical device according to any one of claims 1 to 6, characterized in that: Along the first direction, the connector includes a first surface facing the first surface, the first surface is connected to the first surface, and the overlapping portion of the first surface and the first surface is a sealing surface. The sealing surface is arranged in a ring shape, and the width h of the sealing surface is 1.5mm≤h≤4mm.

8. The electrical device according to claim 7, wherein: 1.5mm≤h≤3mm.

9. The electrical device according to any one of claims 1 to 8, characterized in that: The connector includes a second surface facing the housing, the second surface is flush with the second surface, or the second surface extends beyond the second surface by a width d, 0<d≤0.5mm.

10. The electrical device according to any one of claims 1 to 9, characterized in that: The connector includes a first part and a second part, the second part protrudes toward the outside of the connector relative to the first part, the seal is located below the second part, the inclined portion is located between the first part and the shell, and the first protrusion is compressed and connected to the first part.

11. A battery pack, characterized in that: The electrical device comprises a battery cell assembly and any one of claims 1 to 10, wherein the battery cell assembly is arranged in the housing, and the electrical device comprises a wiring harness connecting the connector and the battery cell assembly, and the connector is configured to be connected to an electrical device.

12. The battery pack according to claim 11, wherein: The length of the wiring harness is greater than the length of the connector along the first direction.

13. An electrical device, characterized in that: Comprising the battery pack as claimed in claim 12.

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