Connector assemblies, battery packs, and electrical equipment

Abstract

This application provides a connector assembly, a battery pack, and an electrical device. The connector assembly includes a receiver, an insert, and a seal. At least one of the insert and the receiver is a connector. The receiver includes a receiving portion, and the insert includes a plug portion. The plug portion is inserted into the receiver along a first direction. The inner surface of the receiving portion is inclined relative to the first direction and has an obtuse angle with the first direction. The seal includes an annular body and at least one first protrusion, which is disposed on the outer wall of the body. The seal is disposed between the receiver and the plug portion and seals the receiver and the plug portion together. The body is fixed to the plug portion, and the first protrusion is connected to the receiver.

Description

Technical Field

[0001] This application relates to the field of batteries, and in particular to a connector assembly, a battery pack, and an electrical device. Background Technology

[0002] A battery pack is a device that can continue to be used after the battery cells have been discharged, by recharging to reactivate the active materials. Battery packs are widely used in electrical devices such as mobile phones, laptops, power tools, and vehicles. A battery pack transmits electrical energy or signals through two interlocking connectors. Improving the reliability of the connection between these two connectors is one of the research directions in battery technology development. Summary of the Invention

[0003] In view of the above problems, this application provides a connector assembly, a battery pack, and an electrical device, which helps to improve the connection reliability between the receiver and the insert.

[0004] This application provides a connector assembly including a receiver, an insert, and a seal.

[0005] At least one of the insert and the receiver is a connector. The receiver includes a receiving portion, and the insert includes a plug portion. The inner surface of the receiving portion is inclined relative to a first direction and has an obtuse angle with the first direction. The first direction indicates the direction in which the plug portion is inserted into the receiving portion. The seal includes an annular body and at least one first protrusion disposed on the outer wall of the body. The seal is disposed between the receiving portion and the plug portion and seals the receiving portion and the plug portion together. The first protrusion is connected to the receiving portion.

[0006] In the connector assembly of this application embodiment, the inner surface of the receiving part is inclined relative to the first direction. During the docking process of the plug and the receiving part along the first direction, before the seal contacts the inclined receiving part, the air in the receiving part can be discharged through the gap between the seal and the receiving part. This helps to reduce the possibility that the insertion difficulty of the plug and the seal will increase due to the compression and pressure increase of the air in the receiving part, improves the assembly convenience between the insert and the receiving part, and improves the connection reliability between the receiving part and the insert.

[0007] In one or more of the above optional embodiments, the obtuse angle between the inner surface of the receiving part and the first direction is in the range of 160° to 175°, which is beneficial for the insertion of the connector into the receiving part.

[0008] In one or more of the above optional embodiments, the seal is interference-fitted with the receiving part.

[0009] When the insert and receiver are fully mated, the seal and receiver are in an interference fit. The seal is compressed and deformed by the joint pressure of the insert and receiver. The seal relies on its own elasticity to press the insert and receiver together, thus improving the sealing effect.

[0010] In one or more of the above optional embodiments, there are multiple first protrusions, the first protrusions are arranged around the body, the multiple first protrusions are spaced apart on the body, and the diameter of each first protrusion decreases gradually along the first direction.

[0011] The diameter of each first protrusion decreases progressively, allowing each first protrusion to fit the tilted receiving part. During the docking process of the insert and the receiving part, each first protrusion can contact and fit with the receiving part, forming multiple different support areas. This reduces the possibility of the seal becoming tilted due to unbalanced force. After the insert and the receiving part are docked, each first protrusion can contact and fit with the receiving part to form a sealing interface, improving the sealing effect.

[0012] In one or more of the above optional embodiments, there are multiple first protrusions, and each first protrusion protrudes from the outer wall of the body at the same height.

[0013] With each first protrusion protruding from the outer wall at an equal height, during the docking process of the insert and the receiver, each first protrusion can contact the receiver simultaneously, and the compressive force borne by each first protrusion is relatively balanced. Furthermore, after the insert and the receiver are docked, the compressive force borne by each first protrusion is relatively balanced, reducing the possibility of local crushing of the first protrusion.

[0014] In one or more of the above optional embodiments, the body of the seal is fixed to the insertion portion. Preferably, the seal includes a second protrusion connected to the inner wall of the body, and a plurality of second protrusions are spaced apart along a first direction. The insertion portion includes a first groove, and at least a portion of the second protrusion is located in the first groove.

[0015] The main body is fitted onto the outside of the insertion part, which passes through the central hole of the main body. The second protrusion is sealed to the insertion part. The inner wall of the main body faces the insertion part, and the second protrusion protrudes from the inner wall. When the seal is installed with the insertion part, at least a portion of the second protrusion is located in the first groove, achieving a tight connection between the seal and the insertion part.

[0016] In one or more of the above optional embodiments, the receiver is a connector, the receiver portion includes a first base and a first terminal, the first base and the receiver portion are connected to form a receiving cavity, the insertion portion is located in the receiving cavity, and the first terminal is fixed to the first base.

[0017] The receiving cavity can guide the insertion operation of the connector, improving the convenience of the insertion process. The connector is located inside the receiving cavity, and the receiving part can provide protection for the connector from the outside.

[0018] In one or more of the above optional embodiments, the insert is a connector, the insert includes a second base and a second terminal, the second terminal is fixed to the second base and extends out of the second base, the second terminal and the first terminal are connected; the plug portion protrudes from the second base and surrounds the outside of the second terminal.

[0019] When the insert and receiver are docked, the second base contacts and limits the receiver, and the insert is inserted into the predetermined position, reducing the possibility of excessive compression of the seal due to excessive insertion size of the insert, which may cause structural damage to the seal.

[0020] In one or more of the above optional embodiments, the first base includes a first side away from the second base, and a first sealant is provided at the connection between the first terminal and the first side.

[0021] The first sealant can seal the gap between the first terminal and the first base, improve the waterproof and airtight performance of the receiver, reduce the possibility of external moisture entering the mating part and the mating area of ​​the receiver, and improve the safety of the connector assembly.

[0022] In one or more of the above optional embodiments, the second base includes a second side facing the first base, and a second sealant is provided at the connection between the second terminal and the second side.

[0023] The second sealant can seal the gap between the second terminal and the second base, improve the waterproof and airtight performance of the insert, reduce the possibility of external moisture entering the insertion area of ​​the plug and receiver, and improve the safety of the connector assembly.

[0024] In one or more of the above optional embodiments, the body abuts against the second base, and the body includes a second groove facing the second base, the second groove providing deformation space for the body.

[0025] When the insertion part and the receiving part jointly compress the seal, when the first protrusion is compressed and deformed, a part of the seal can deform toward the second groove to reduce the volume of the second groove. The way the body is provided with the second groove can guide the part of the seal to expand in a directional manner toward the second groove, reducing the possibility of local stress concentration due to irregular expansion of the seal, and at the same time reducing the possibility that the part of the seal near the second base is difficult to compress due to the provision of the first protrusion.

[0026] This application provides a battery pack that includes the connector assembly described in the above embodiments.

[0027] This application provides an electrical device that includes the battery pack described in the above embodiment. Attached Figure Description

[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the structure of a battery pack provided in one embodiment of this application; Figure 2 This is a partially exploded structural diagram of a battery pack provided in an embodiment of this application; Figure 3 yes Figure 2 Enlarged view of point M in the middle; Figure 4 This is a schematic diagram of the structure of a connector assembly provided in an embodiment of this application; Figure 5 This is a partially exploded structural diagram of a connector assembly provided in an embodiment of this application; Figure 6 This is a cross-sectional view of a connector assembly provided in an embodiment of this application; Figure 7 This is a cross-sectional view of a receiving device provided in an embodiment of this application; Figure 8 This is a schematic diagram of the structure of a seal provided in an embodiment of this application in a free state without being compressed; Figure 9 This is a schematic diagram of the structure of a receiving device provided in an embodiment of this application; Figure 10 This is a structural schematic diagram of the connection state of the insert and the seal provided in an embodiment of this application; Figure 11 This is a cross-sectional structural schematic diagram of a sealing element provided in an embodiment of this application; Figure 12 yes Figure 11 Enlarged view of section V in the middle; Figure 13 This is a schematic diagram of the structure of a sealing element provided in one embodiment of this application; Figure 14 This is a cross-sectional structural diagram of the insert and seal in an assembled state according to an embodiment of this application.

[0029] Explanation of reference numerals in the attached figures: 10. Battery pack; 20. Shell; 30. Connector assembly; 40. Receiving component; 40a. Receiving cavity; 41. Receiving part; 41a. Inner surface; 42. First terminal; 43. First base; 431. First side surface; 50. Insert; 51. Connecting part; 511. First groove; 52. Second terminal; 53. Second base; 531. Second side; 60. Seal; 61. Body; 611. Outer wall; 612. Inner wall; 613. Second groove; 62. First protrusion; 63. Second protrusion; 70. First sealant; 80. Second sealant; 90. First fastener; 100. Second fastener; X, first direction; Y, the direction of inclination. Detailed Implementation

[0030] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0031] It should be noted that, unless otherwise stated, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by those skilled in the art to which the embodiments of this application pertain.

[0032] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0033] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise explicitly defined.

[0034] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0035] See Figures 1 to 4 As shown, this application embodiment provides a battery pack 10, which includes a housing 20, a cell assembly (not shown), and a connector assembly 30. The cell assembly is located inside the housing 20. The connector assembly 30 includes a receiver 40 and an insert 50. The receiver 40 is fixed to the housing 20, and at least a portion of the insert 50 is exposed outside the housing 20.

[0036] In one feasible manner, the battery cell assembly can undergo charge / discharge cycles. The housing 20 can protect the battery cell assembly.

[0037] In one feasible approach, the housing 20 may be an integral insulating structure, and the housing 20 may be manufactured using an injection molding process. The material of the housing 20 includes, but is not limited to, plastic. Alternatively, at least a portion of the housing 20 may be formed by coating an insulating layer onto the outer surface of a sheet metal.

[0038] See Figures 4 to 8 As shown, this application embodiment provides a connector assembly 30, which includes a receiver 40, an insert 50, and a seal 60. The insert 50, the seal 60, and the receiver 40 are connected and sealed.

[0039] In one possible implementation, at least one of the insert 50 and the receiver 40 is a connector, the receiver 40 includes a receiving portion 41, and the insert 50 includes a plug portion 51. The plug portion 51 is plugged into the receiver 41 along a first direction X.

[0040] In one possible implementation, the receiver 40 includes a receiving portion 41, the receiving portion 41 including an inner surface 41a, the inner surface 41a being inclined relative to a first direction X, and an obtuse angle B1 existing between the inner surface 41a and the first direction X (see...). Figure 7 (As shown).

[0041] In one possible implementation, the seal 60 includes an annular body 61 and at least one first protrusion 62 disposed on the outer wall 611 of the body 61.

[0042] In one possible implementation, the first protrusion 62 is disposed annularly around the body 61. See also: Figure 11 As shown, there can be multiple first protrusions 62. This application uses the example of multiple first protrusions 62 for illustration, but it is not limited to this. In another example, there can be only one first protrusion 62.

[0043] In one feasible embodiment, a seal 60 is disposed between the receiving portion 41 and the insertion portion 51, and seals the receiving portion 41 and the insertion portion 51 together, the body 61 is fixed to the insertion portion 51, and the first protrusion 62 is connected to the receiving portion 41.

[0044] The insertion process of the receiver 40 and the insert 50 may include: the insert portion 51 and the receiver 41 being inserted into each other along a first direction X. The receiver 41 and the insert portion 51 jointly compress the seal 60 to compress and deform the seal 60, thereby sealing the receiver 41 and the seal 60, and sealing the insert portion 51 and the seal 60.

[0045] In the connector assembly 30 of this application embodiment, the inner surface 41a of the receiving part 41 is inclined. During the docking process of the insert 50 and the receiving part 40 along the first direction X, before the sealing member 60 contacts the inclined inner surface 41a, the air in the receiving part 41 can be discharged through the gap between the sealing member 60 and the receiving part 41. This helps to reduce the possibility that the insertion difficulty of the insert 51 and the sealing member 60 will increase due to the compression and pressure increase of the air in the receiving part 41, improves the assembly convenience between the insert 50 and the receiving part 40, and improves the connection reliability between the receiving part 40 and the insert 50.

[0046] When the insert 50 and the receiver 40 are docked, the first protrusion 62 is compressed and deformed under the joint squeezing action of the insert 51 and the receiver 41. The first protrusion 62 and the receiver 41 form multiple contact sealing areas, which play a redundant protection role. At the same time, the seal 60 disperses the sealing pressure through the first protrusion 62, reducing the possibility of stress concentration in the seal 60 leading to structural damage and sealing failure.

[0047] In one feasible approach, the obtuse angle B1 between the inner surface 41a and the first direction X ranges from 160° to 175°, which facilitates the insertion of the connector 51 into the receiver 41.

[0048] In one example, the obtuse angle B1 between the receiving unit 41 and the first direction X is 160°, 162°, 164°, 166°, 168°, 170°, 172°, 175° or a range of any two of these values.

[0049] In one feasible embodiment, the seal 60 is interference-fitted with the receiving part 41. When the insert 50 and the receiving part 40 are mated, the seal 60 and the receiving part 41 are in an interference fit. The seal 60 is compressed and deformed by the joint pressure of the insert 51 and the receiving part 41. The seal 60 presses the insert 51 and the receiving part 41 together with its own elastic force, thereby improving the sealing effect.

[0050] In one possible implementation, the receiver 40 is a connector that connects to the battery cell assembly. For example, the receiver 40 is connected to the battery cell assembly via a conductive element, which in some examples may include a wire harness or copper busbar. The insert 50 is configured to connect to an external device. Optionally, the external device includes the main body of the electrical appliance. Optionally, the external device includes a charging device. Optionally, the electrical appliance includes a shared electric bicycle.

[0051] In one feasible approach, see Figure 7 As shown, the receiver 40 includes a first base 43 and a first terminal 42. The first base 43 and the receiver 41 are connected to form a receiving cavity 40a. The insertion part 51 is located in the receiving cavity 40a, and the first terminal 42 is fixed to the first base 43.

[0052] The first base 43 can be connected to the housing 20, and the first terminal 42 can be connected to the battery cell assembly. The first terminal 42 is configured to transmit electrical energy and / or signals. When the receiver 40 and the insert 50 are connected, the second terminal 52 is connected to the first terminal 42 to transmit electrical energy and / or signals to an external device through the second terminal 52.

[0053] In one possible implementation, the receiving part 41 can be connected to the housing 20 via a first fastener 90, which includes, but is not limited to, a screw.

[0054] In one possible implementation, the first base 43 and the receiving portion 41 are integrally injection molded, and the first base 43 and the receiving portion 41 are connected to form a receiving cavity 40a. Optionally, the first terminal 42 can be inserted into the first base 43. Optionally, the first terminal 42 and the first base 43 are integrally injection molded. Optionally, the receiving portion 41 does not have a venting channel structure penetrating its inner surface 41a and outer surface.

[0055] In one possible implementation, the insert 50 is a connector, including a second base 53 and a second terminal 52, the second terminal 52 being connected to a first terminal 42, the second terminal 52 being fixed to and extending beyond the second base 53. A mating portion 51 protrudes from the second base 53 and surrounds the outside of the second terminal 52.

[0056] When the insert 50 and the receiver 40 are docked, the second base 53 contacts and limits the receiver 41, and the insert 51 is inserted into the predetermined position, reducing the possibility that the insert 51 is too large and causes excessive compression to the seal 60, resulting in structural damage to the seal 60.

[0057] In one possible implementation, the second base 53 and the insertion portion 51 are integrally injection molded. Optionally, the second terminal 52 can be inserted into the second base 53. Optionally, the second terminal 52 and the second base 53 are integrally injection molded. Optionally, the insertion portion 51 does not have a venting channel structure penetrating its inner and outer surfaces.

[0058] The insertion process of the receiving part 40 and the inserter 50 may include: the second terminal 52 and the first terminal 42 being inserted into each other along the first direction X, and the receiving part 41 and the inserting part 51 being inserted along the first direction X. The receiving part 41 and the inserting part 51 jointly compress the sealing member 60 to compress and deform the sealing member 60, thereby sealing between the receiving part 41 and the sealing member 60, and sealing between the inserting part 51 and the sealing member 60.

[0059] In one possible implementation, the second base 53 can be connected to the housing 20 by a second fastener 100, which includes, but is not limited to, screws.

[0060] In one possible implementation, the body 61 is fitted onto the outside of the insertion portion 51, with the insertion portion 51 passing through the central hole of the body 61, and the body 61 and the insertion portion 51 are sealed together. The outer wall 611 of the body 61 is disposed opposite to the insertion portion 51.

[0061] See Figure 5 As shown, Figure 5 This diagram shows the insert 50 and the receiver 40 before they are inserted. The first protrusion 62 protrudes from the outer wall 611. See also... Figure 6 As shown, Figure 6 The illustration shows the insertion part 50 and the receiving part 40 after docking. The receiving part 41 and the first protrusion 62 are in direct contact and fit together. The first protrusion 62 is compressed under the joint pressing action of the insertion part 51 and the receiving part 41, allowing the first protrusion 62 to come into contact and fit with the receiving part 41.

[0062] In the connector assembly 30 of this application embodiment, the inner surface 41a of the receiving part 41 is inclined. During the docking process of the insert 50 and the receiving part 40 along the first direction X, before the sealing member 60 contacts the inclined inner surface 41a, the air in the receiving part 41 can be discharged through the gap between the sealing member 60 and the receiving part 41. When the insert 50 and the receiving part 40 are docked, the possibility of the insert 51 deviating from the predetermined position and the first terminal 42 and the second terminal 52 becoming poorly connected due to the air in the receiving part 41 being compressed and the pressure increasing is reduced. This improves the connection reliability between the receiving part 40 and the insert 50 and improves the safety of the battery pack 10.

[0063] In one possible implementation, the insertion part 51 is a cylindrical structure, and the outer peripheral surface of the insertion part 51 is a cylindrical surface. In another possible implementation, the insertion part 51 is a prism, pyramid, or cone structure, and the outer peripheral surface of the insertion part 51 is a prism surface, a pyramid surface, or a cone surface, respectively.

[0064] In one feasible embodiment, the inner surface 41a of the receiving part 41 is a conical surface, the outer wall 611 of the body 61 is a conical surface, the sealing member 60 is compressed under the joint pressing action of the insertion part 51 and the receiving part 41, the sealing member 60 fits tightly with the receiving part 41, which is beneficial to improve the sealing effect. At the same time, the sealing member 60 is subjected to uniform force, which reduces the possibility of local structural damage caused by local stress concentration in the sealing member 60.

[0065] In one feasible approach, see Figure 9 As shown, the first base 43 includes a first side 431 away from the second base 53, and a first sealant 70 is provided at the connection between the first terminal 42 and the first side 431.

[0066] The first sealant 70 can seal the gap between the first terminal 42 and the first base 43, improve the waterproof and airtight performance of the receiver 40, reduce the possibility of external moisture entering the insertion area of ​​the plug part 51 and the receiving part 41, and improve the safety of the connector assembly 30.

[0067] The materials of the first terminal 42 and the first base 43 are different. The deformation amounts of the first terminal 42 and the first base 43 due to thermal expansion and contraction are different. The first sealant 70 can compensate for the deformation caused by thermal expansion and contraction by stretching or compressing itself. The first terminal 42 and the first base 43 are kept connected and fixed by the first sealant 70, reducing the possibility of the first terminal 42 becoming loose relative to the first base 43.

[0068] In one example, a transition fit is provided between the first terminal 42 and the first base 43 to facilitate assembly and reduce the possibility of damage to the first terminal 42 under stress.

[0069] In one example, a first sealant 70 is disposed around the first terminal 42 to achieve a seal over the entire circumference of the first terminal 42.

[0070] In one example, the first sealant 70 is an adhesive that achieves a seal, and the first sealant 70 includes, but is not limited to, polyurethane (PU) sealant, silicone sealant, and epoxy resin sealant.

[0071] In one feasible approach, see Figure 10 As shown, the second base 53 includes a second side surface 531 facing the first base 43, and a second sealant 80 is provided at the connection between the second terminal 52 and the second side surface 531.

[0072] The second sealant 80 can seal the gap between the second terminal 52 and the second base 53, improve the waterproof and airtight performance of the insert 50, reduce the possibility of external moisture and dust entering the insertion area of ​​the insertion part 51 and the receiving part 41, and improve the safety of the connector assembly 30.

[0073] The materials of the second terminal 52 and the second base 53 are different. The deformation amounts of the second terminal 52 and the second base 53 due to thermal expansion and contraction are different. The second sealant 80 can compensate for the deformation caused by thermal expansion and contraction by stretching or compressing itself. The second terminal 52 and the second base 53 are kept connected and fixed by the second sealant 80, reducing the possibility of the second terminal 52 becoming loose relative to the second base 53.

[0074] In one example, a transition fit is made between the second terminal 52 and the second base 53 to facilitate assembly of the second terminal 52 and reduce the possibility of damage to the second terminal 52 due to stress.

[0075] In one example, a second sealant 80 is disposed around the second terminal 52 to achieve a seal over the entire circumference of the second terminal 52.

[0076] In one example, the second sealant 80 is an adhesive that achieves a seal, and the second sealant 80 includes, but is not limited to, polyurethane (PU) sealant, silicone sealant, and epoxy resin sealant.

[0077] In one feasible approach, see Figure 11 and Figure 12 As shown, there are multiple first protrusions 62, which are arranged around the body 61. The multiple first protrusions 62 are spaced apart on the body 61 along the first direction X, and the diameter of each first protrusion 62 decreases gradually along the first direction X.

[0078] The diameter of each first protrusion 62 decreases progressively, allowing each first protrusion 62 to fit the inclined receiving part 41. During the docking process of the insert 50 and the receiving part 40, each first protrusion 62 can contact and fit with the receiving part 41, forming multiple different support areas. This reduces the possibility of the sealing part 60 becoming skewed due to unbalanced force. After the insert 50 and the receiving part 40 are docked, each first protrusion 62 can contact and fit with the receiving part 41 to form a sealing interface, improving the sealing effect.

[0079] In one example, the cross-sectional area of ​​the inner surface 41a of the receiving part 41 gradually increases in the direction opposite to the first direction X, and the cross-sectional area of ​​the body 61 gradually increases.

[0080] In one example, two or three first protrusions 62 are spaced apart on the outer wall 611.

[0081] In another example, the number of first protrusions 62 is one.

[0082] In one feasible approach, see Figure 12 As shown, the height of the first protrusion 62 protruding from the outer wall 611 is H. The height H of the first protrusion 62 protruding from the outer wall 611 refers to the vertical distance between the highest point of the first protrusion 62 and the outer wall 611 when the seal 60 is in a free state without being compressed. Along the inclined direction Y, the width of the first protrusion 62 is L, where 0 ≤ H / L ≤ 1 / 2.

[0083] In one feasible approach, see Figure 12 As shown, there are multiple first protrusions 62, and each first protrusion 62 protrudes from the outer wall 611 of the body 61 by an equal height H.

[0084] In this embodiment, the height H of each first protrusion 62 protruding from the outer wall 611 is equal. During the docking process of the insert 50 and the receiver 40, each first protrusion 62 can contact the receiver 41 simultaneously. The compressive force borne by each first protrusion 62 is relatively balanced. After the insert 50 and the receiver 40 are docked, the compressive force borne by each first protrusion 62 is relatively balanced, reducing the possibility of local crushing of the first protrusion 62.

[0085] In one example, the height H of the first protrusion 62 protruding from the outer wall 611 ranges from 0.6 mm to 2.4 mm. Exemplarily, the height H of the first protrusion 62 protruding from the outer wall 611 is 0.6 mm, 0.8 mm, 1.0 mm, 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm, 2.0 mm, 2.2 mm, 2.4 mm, or a range of any two of these values.

[0086] In one example, along the inclined direction Y, the distance K between adjacent first protrusions 62 ranges from 0.6 mm to 1.5 mm, and the distance K between adjacent first protrusions 62 refers to the straight-line distance between the highest points of the first protrusions 62.

[0087] In another possible implementation, there are multiple first protrusions 62. Along the first direction X, the height H of each first protrusion 62 protruding from the outer wall 611 gradually decreases. The outer wall 611 of the body 61 is a cylindrical surface. The first protrusions 62 are compressed and deformed under the joint pressing action of the insertion part 51 and the receiving part 41. The first protrusions 62 and the receiving part 41 form multiple contact sealing areas, which play a redundant protection role. At the same time, the sealing member 60 disperses the sealing pressure through the first protrusions 62, reducing the possibility of stress concentration in the sealing member 60 leading to structural damage and sealing failure.

[0088] In one feasible embodiment, there are multiple first protrusions 62, which are arranged around the body 61. The multiple first protrusions 62 are spaced apart on the body 61. Along the first direction X, the diameter of each first protrusion 62 decreases gradually, and the height of each first protrusion 62 protruding from the outer wall 611 of the body 61 is equal.

[0089] In one feasible approach, see Figure 11 As shown, the outer wall 611 is configured such that the included angle B2 with the first direction X is 160° to 175°. The included angle B2 with the first direction X refers to the angle value measured when the seal 60 is in a free state without being compressed.

[0090] The outer wall 611 is configured such that the included angle B2 between it and the first direction X is limited to the above range, so that the slope of the outer wall 611 is appropriate, allowing the seal 60 to easily expand radially to fill the gap between the insertion part 51 and the receiving part 41, while the seal 60 maintains good resilience, reducing the possibility of seal failure due to insufficient radial expansion of the seal 60.

[0091] In one example, the outer wall 611 is configured such that the angle B2 between it and the first direction X is 160°, 162°, 164°, 166°, 168°, 170°, 172°, 175° or a range of any two of these values.

[0092] In one feasible approach, see Figure 12 and Figure 13 As shown, the body 61 abuts against the second base 53. The body 61 includes a second groove 613 facing the second base 53, and the second groove 613 provides deformation space for the body 61.

[0093] Along the first direction X, the projected area of ​​the second base 53 is larger than the projected area of ​​the insertion part 51, and the projection of the insertion part 51 is located within the projection of the second base 53. The second base 53 can form a limiting constraint on the body 61, so that when the insert 50 and the receiver 40 are docked, the insertion part 51 and the receiver 41 can apply a moderate compressive force to the seal 60 and achieve a seal, reducing the possibility that the seal 60 may be locally over-compressed or under-compressed due to the seal 60 deviating from the predetermined position.

[0094] When the insertion part 51 and the receiving part 41 jointly compress the sealing member 60, when the first protrusion 62 is compressed and deformed, a part of the sealing member 60 can deform toward the second groove 613 to reduce the volume of the second groove 613. The way the body 61 is provided with the second groove 613 can guide the part of the sealing member 60 to expand in a directional manner toward the second groove 613, reducing the possibility of local stress concentration due to irregular expansion of the sealing member 60, and at the same time reducing the possibility that the part of the sealing member 60 near the second base 53 will be difficult to compress due to the provision of the first protrusion 62.

[0095] See one example. Figure 5 As shown, the second groove 613 is an annular groove.

[0096] In one feasible approach, see Figures 11 to 13 As shown, the body 61 of the seal 60 is fixed to the insertion part 51.

[0097] In one possible implementation, the seal 60 includes a second protrusion 63 connected to the inner wall 612 of the body 61, and a plurality of second protrusions 63 are spaced apart along a first direction X.

[0098] The main body 61 is fitted onto the outside of the insertion part 51, and the insertion part 51 passes through the central hole of the main body 61. The second protrusion 63 is sealed and fitted with the insertion part 51. The inner wall 612 of the main body 61 faces the insertion part 51, and the second protrusion 63 protrudes from the inner wall 612.

[0099] In one feasible approach, see [link to relevant documentation] Figure 14 As shown, the insertion portion 51 includes a first groove 511, and at least a portion of the second protrusion 63 is located in the first groove 511. When the seal 60 is installed with the insertion portion 51, at least a portion of the second protrusion 63 is located in the first groove 511, thereby achieving a tight connection between the seal 60 and the insertion portion 51.

[0100] In another possible implementation, the insertion part 51 does not have the first groove 511. When the seal 60 is connected to the insertion part 51, the second protrusion 63 contacts and fits against the outer peripheral surface of the insertion part 51. When the insertion part 50 and the receiving part 40 are docked, the second protrusion 63 is compressed under the joint pressing action of the insertion part 51 and the receiving part 41, and both the second protrusion 63 and the inner wall 612 are in contact and fit against the insertion part 51. When the insertion part 50 and the receiving part 40 are docked, the second protrusion 63 is compressed and deformed under the joint pressing action of the insertion part 51 and the receiving part 41. The second protrusion 63 and the insertion part 51 form multiple contact sealing areas, which provide redundant protection. At the same time, the seal 60 can distribute the sealing pressure through the second protrusion 63, reducing the possibility of stress concentration in the seal 60 leading to structural damage and sealing failure.

[0101] In one possible approach, glue can be injected between the seal 60 and the insertion part 51 for a fixed connection.

[0102] In one example, the inner wall 612 of the body 61 is a cylindrical surface. In another example, the inner wall 612 of the body 61 is a prism, pyramid, or cone surface.

[0103] In one example, the second protrusion 63 is a ring structure.

[0104] In one example, there are multiple second protrusions 63, and each second protrusion 63 protrudes from the inner wall 612 at the same height. Each second protrusion 63 can contact the insertion part 51 simultaneously, and the force borne by each second protrusion 63 is relatively balanced. After the insertion part 50 and the receiving part 40 are docked, the compressive force borne by each second protrusion 63 is relatively balanced, reducing the possibility of local crushing of the second protrusion 63.

[0105] In one example, along the radial Z of body 61 (see...) Figure 11 As shown), the first protrusion 62 and the second protrusion 63 are staggered. Along the radial direction Z of the body 61, the projection of the first protrusion 62 and the projection of the second protrusion 63 do not overlap. When the first protrusion 62 and the second protrusion 63 are compressed at the same time, the compression positions of the first protrusion 62 and the second protrusion 63 are different. This makes it less likely that the local stress of the first protrusion 62 and the second protrusion 63 after compression will be too large due to the superposition of the extrusion force, thereby reducing the possibility of local crushing and sealing failure due to the superposition of the extrusion force and the large local pressure.

[0106] This application embodiment also provides an electrical device, including an electrical device body and a battery pack 10 of any of the above schemes, wherein an insert 50 is configured to be connected to the electrical device body, and the battery pack 10 is used to provide power to the electrical device body.

[0107] In one feasible approach, the electrical equipment includes shared electric vehicles.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A connector assembly characterized by, include: Receiver, insert, and seal. At least one of the insert and the receiver is a connector, the receiver includes a receiving portion, and the insert includes a plugging portion. The inner surface of the receiving part is inclined relative to the first direction and there is an obtuse angle between it and the first direction, wherein the first direction refers to the direction in which the plug-in part is inserted into the receiving part; The seal includes an annular body and at least one first protrusion, the first protrusion being disposed on the outer wall of the body; The sealing element is disposed between the receiving part and the plug-in part, and seals the receiving part and the plug-in part together. The first protrusion is connected to the receiving part.

2. The connector assembly according to claim 1, characterized in that, The obtuse angle is in the range of 160° to 175°.

3. The connector assembly according to claim 1 or 2, characterized in that, The seal is interference-fitted with the receiving part.

4. The connector assembly according to any one of claims 1 to 3, characterized in that, There are multiple first protrusions, which are arranged around the body and spaced apart from each other. Along the first direction, the diameter of each first protrusion decreases progressively; and / or There are multiple first protrusions, and each first protrusion protrudes from the outer wall of the body at the same height.

5. The connector assembly according to any one of claims 1 to 4, characterized in that, The main body is fixed to the plug-in portion, preferably. The sealing element includes a second protrusion connected to the inner wall of the body, and a plurality of second protrusions are spaced apart along the first direction; The insertion portion includes a first groove, and at least a portion of the second protrusion is located in the first groove.

6. The connector assembly according to any one of claims 1 to 5, characterized in that, The receiving component is a connector, which includes a first base and a first terminal. The first base and the receiving component are connected to form a receiving cavity. The insertion portion is located inside the receiving cavity, and the first terminal is fixed to the first base.

7. The connector assembly according to claim 6, characterized in that, The insert is a connector, and the insert includes a second base and a second terminal. The second terminal is fixed to the second base and extends out of the second base, and the second terminal is connected to the first terminal. The plug portion protrudes from the second base and surrounds the outside of the second terminal.

8. The connector assembly according to claim 7, characterized in that, The first base includes a first side away from the second base, and a first sealant is provided at the connection between the first terminal and the first side.

9. The connector assembly according to claim 7 or 8, characterized in that, The second base includes a second side facing the first base, and a second sealant is provided at the connection between the second terminal and the second side.

10. A battery pack, characterized in that, Includes the connector assembly as described in any one of claims 1 to 9.

11. An electrical appliance, characterized in that, Includes the battery pack as described in claim 10.

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