Battery device and electric device

Abstract

The utility model provides a battery device and an electric device. The battery device comprises a box body; the battery monomers are arranged in the box body; the socket connector comprises a shell, a first plugging terminal and a first sealing piece, the shell comprises a side wall, a cavity formed by the side wall in an enclosing mode and a fixing part which is arranged in the cavity and connected with the side wall, the fixing part comprises a communicating hole which is arranged in a penetrating mode, and the first plugging terminal is fixed in the communicating hole. The first plugging terminal comprises a first end and a second end which are oppositely arranged along a first direction, the first end is electrically connected with the battery monomer, the first end and the second end are respectively arranged at two sides of the fixing part, and the first sealing element is connected between the first plugging terminal and the hole wall, facing the plugging terminal, of the communication hole in a sealing manner, so that the sealing performance of the socket connector is improved; the problem that external impurities and water vapor intrude into the box body through a gap between the fixing part of the socket connector and the first plugging terminal is solved, and the sealing performance of the battery device is improved.

Description

Technical Field

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

[0002] During the operation of battery cells, water vapor and impurities in the environment will have a great impact on their performance. Therefore, battery cells are usually placed in a box to form a battery device, but the overall sealing performance of the battery device still needs to be improved. Utility Model Content

[0003] In view of the above problems, the present application provides a battery device and an electrical device, which can improve the overall sealing performance of the battery device.

[0004] In the first aspect, the present application provides a battery device, comprising: a box body; a battery cell, which is arranged in the box body; a socket connector, comprising a shell, a first plug-in terminal and a first seal, the shell comprising a side wall, a chamber formed by the side wall and a fixing part connected to the side wall in the chamber, the fixing part comprising a connecting hole arranged through, the first plug-in terminal is fixed to the connecting hole, the first plug-in terminal comprises a first end and a second end arranged opposite to each other along a first direction, the first end is electrically connected to the battery cell, the first end and the second end are respectively arranged on both sides of the fixing part, and the first seal is sealed and connected between the first plug-in terminal and the hole wall of the connecting hole facing the plug-in terminal.

[0005] In the scheme of the embodiment of the present application, the battery device includes a box body, a battery cell and a socket connector, the battery cell is arranged in the box body, the socket connector includes a shell, a first plug-in terminal and a first seal, the shell includes a side wall, a chamber formed by the side wall and a fixing part connected to the side wall in the chamber, the first plug-in terminal includes a first end and a second end arranged opposite to each other along a first direction, the first end is electrically connected to the electrode terminal, the second end passes through the connecting hole of the fixing part, the first end and the second end are respectively arranged on both sides of the fixing part, the fixing part is used to fix the first plug-in terminal, and the first seal is sealed and connected between the first plug-in terminal and the hole wall of the connecting hole facing the first plug-in terminal, so as to improve the sealing performance of the socket connector, improve the problem of external impurities and water vapor invading the box body through the gap between the fixing part of the socket connector and the first plug-in terminal, and improve the sealing performance of the battery device.

[0006] In some embodiments, the first sealing member and the first plug terminal are fixedly connected.

[0007] In the solution of the embodiment of the present application, the first sealing member and the first plug-in terminal are fixedly connected to reduce the difficulty of setting the first sealing member.

[0008] In some embodiments, the first sealing member is a rubber member, and the first sealing member and the first plug-in terminal are integrally formed by a vulcanization process.

[0009] In the solution of the embodiment of the present application, the first seal is a rubber part, and the first seal and the first plug-in terminal are formed into one piece through a vulcanization process, which can not only improve the connection reliability between the first seal and the first plug-in terminal, but also improve the sealing performance between the first seal and the first plug-in terminal, so as to improve the overall sealing reliability of the battery device.

[0010] In some embodiments, the first sealing member includes a base and a flange, the base is sleeved on the first plug-in terminal, and the flange surrounds the outer surface of the base.

[0011] In the scheme of the embodiment of the present application, the first seal includes a base that is sleeved on the first plug-in terminal, and a flange that surrounds the outer surface of the base, so that when the first seal is sealed between the hole wall of the connecting hole and the first plug-in terminal, a longer and more tortuous sealing path can be formed, thereby improving the problem of external impurities and water vapor invading the box through the gap between the fixed part of the socket connector and the first plug-in terminal, thereby improving the sealing performance of the battery device.

[0012] In some embodiments, at least two flanges are spaced apart along the first direction.

[0013] In the solution of the embodiment of the present application, at least two flanges are arranged at intervals along the first direction to improve the sealing performance of the first sealing member.

[0014] In some embodiments, the first sealing member is disposed on a side of the fixing portion close to the first end.

[0015] In the solution of the embodiment of the present application, the first seal is arranged on one side of the fixing portion close to the first end, so that when the first plug-in terminal is plugged into the fixing portion, the first seal is simultaneously fixed in the fixing portion, thereby reducing the difficulty of assembling the socket connector.

[0016] In some embodiments, the communicating hole includes a first through hole and a second through hole that are interconnected, the aperture of the first through hole is larger than the aperture of the second through hole, and the first sealing member is disposed in the first through hole.

[0017] In the scheme of the embodiment of the present application, the connecting hole includes a first through hole and a second through hole which are connected to each other, the aperture of the first through hole is larger than the aperture of the second through hole, and the first sealing member is arranged in the first through hole to reduce the difficulty of assembling the socket connector. The first sealing member with a larger thickness has a longer service life and also helps to improve the sealing performance of the socket connector.

[0018] In some embodiments, a dimension of the fixing portion in the first direction is L1, a dimension of the first sealing member in the first direction is L2, and 0.6*L1≤L2 is satisfied.

[0019] In the solution of the embodiment of the present application, when the above conditions are met, the first sealing member has a sufficient size to seal the gap between the fixing portion and the first plug-in terminal, thereby improving the sealing reliability of the socket connector.

[0020] In some embodiments, at least a portion of the side wall extends out of the box body, and the socket connector further includes a second sealing member, which is sealingly connected between the side wall and the box body.

[0021] In the solution of the embodiment of the present application, the second sealing member is used to improve the sealing performance between the side wall and the box body, so as to improve the sealing reliability of the battery device.

[0022] In a second aspect, the present application provides an electrical device, comprising a battery device and a plug connector according to the first aspect embodiment, wherein the plug connector comprises a housing and a second plug terminal disposed in the housing, and the second plug terminal is connected to the first plug terminal.

[0023] In the scheme of the embodiment of the present application, the socket connector and the plug connector are connected, and are sealed by a first sealing member between the first plug-in terminal and the hole wall of the connecting hole facing the first plug-in terminal, so as to improve the sealing performance of the socket connector, improve the problem of external impurities and water vapor invading the box through the gap between the fixed part of the socket connector and the first plug-in terminal, and improve the problem of water vapor entering the connection interface between the first plug-in terminal and the second plug-in terminal through the fixed part and the first plug-in terminal, causing a short circuit, thereby improving the reliability of the electrical device.

[0024] In some embodiments, a portion of the outer shell extends into the cavity, and the socket connector further includes a third sealing member, which surrounds the outer circumference of the outer shell and is sealingly connected to the outer shell and the housing.

[0025] In the solution of the embodiment of the present application, the socket connector also includes a third seal, which is used to improve the sealing performance between the shell and the housing.

[0026] In some embodiments, the electrical device also includes a conductive member, part of which extends into the shell and is connected to the second plug terminal. The socket connector also includes a fourth seal, which surrounds the inner circumference of the shell and is sealed to the shell and the conductive member.

[0027] In the solution of the embodiment of the present application, the socket connector also includes a fourth sealing member, and the fourth sealing member is used to improve the sealing performance between the housing and the conductive member. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0029] Figure 1 is a structural schematic diagram of a vehicle provided by an embodiment of the present application;

[0030] Figure 2 is a schematic structural diagram of a battery device provided in one embodiment of the present application;

[0031] Figure 3 It is a structural schematic diagram of a battery module provided in one embodiment of the application;

[0032] Figure 4 is a structural schematic diagram of a battery device provided in one embodiment of the present application;

[0033] Figure 5 It is a structural schematic diagram of a socket connector of a battery device provided in one embodiment of the present application;

[0034] Figure 6 is an exploded view of a socket connector of a battery device provided in one embodiment of the present application;

[0035] Figure 7 yes Figure 5 Sectional view at AA in the middle;

[0036] Figure 8 It is a partial structural schematic diagram of a socket connector of a battery device provided in one embodiment of the present application;

[0037] Fig. 9 It is a partial structural schematic diagram of a battery device provided in one embodiment of the present application;

[0038] Fig.10 It is a partial structural exploded diagram of a battery device provided in one embodiment of the present application.

[0039] Description of reference numerals:

[0040] 1. Vehicle; 101. Motor; 102. Controller;

[0041] 2. Battery device; 201. Battery module; 202. Box; 2021. First box; 2022. Second box;

[0042] 3. Battery cells;

[0043] 4. socket connector; 41. housing; 42. first plug terminal; 43. first sealing member; 411. side wall; 412. fixing portion; 413. communicating hole; 4131. first through hole; 4132. second through hole; 421. first end; 422. second end; 431. base; 432. flange; 44. second sealing member;

[0044] 5. Plug connector; 51. Housing; 52. Second plug terminal; 53. Third sealing member; 54. Fourth sealing member; 55. Conductive member;

[0045] 6. Electrical device; X, first direction. DETAILED DESCRIPTION

[0046] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0047] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should have the common meanings understood by technicians in the field to which the embodiments of the present application belong.

[0048] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0049] In addition, the technical terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0050] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0051] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0052] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0053] During the operation of battery cells, water vapor and impurities in the environment will have a great impact on their performance, so battery cells are usually placed in a box to form a battery device.

[0054] In the related art, the battery device needs to be electrically connected through a socket connector and a plug connector of other external devices. However, when the socket connector is not paired with the plug connector, its own sealing is poor, and moisture and impurities from the external environment can easily enter the box through the plug connector, which has an adverse effect on the performance of the battery device.

[0055] Based on the above problems, an embodiment of the present application provides a battery device, which includes a box body, a battery cell and a socket connector. The battery cell is arranged in the box body, and the socket connector includes a shell, a first plug-in terminal and a first seal. The shell includes a side wall, a chamber formed by the side wall and a fixed part connected to the side wall in the chamber. The first plug-in terminal includes a first end and a second end arranged opposite to each other along a first direction, the first end is electrically connected to the electrode terminal, and the second end passes through a connecting hole of the fixing part. The first end and the second end are respectively arranged on both sides of the fixing part. The fixing part is used to fix the first plug-in terminal. The first seal is sealed and connected between the first plug-in terminal and the hole wall of the connecting hole facing the first plug-in terminal, so as to improve the sealing performance of the socket connector, improve the problem of external impurities and water vapor invading the box body through the gap between the fixing part of the socket connector and the first plug-in terminal, and improve the sealing performance of the battery device.

[0056] The technical solutions described in the embodiments of the present application are applicable to battery devices and electrical devices using the battery devices.

[0057] The electrical device may be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, and the like. The vehicle may be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, and the like; the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, and the like; the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like; the electric tool may include a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and an electric tool for railways, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, and an electric planer, and the like. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0058] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0059] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel metal hydride battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present application. The battery cell can be cylindrical, flat, rectangular or other shapes, which is not limited in the embodiments of the present application.

[0060] The battery device mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery device mentioned in the present application may include a battery module or a battery pack. The battery pack generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0061] A battery cell includes an electrode assembly and an electrolyte. The electrode assembly includes a positive electrode sheet, a negative electrode sheet and a separator. A battery cell mainly works by the movement of metal ions between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector. The positive current collector includes a positive current collector and a positive electrode ear connected to the positive current collector. The positive current collector is coated with a positive active material layer, and the positive electrode ear is not coated with a positive active material layer. Taking a lithium-ion battery as an example, the material of the positive current collector can be aluminum, and the positive active material layer includes a positive active material. The positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative current collector and a negative active material layer, and the negative active material layer is coated on the surface of the negative current collector; the negative current collector includes a negative current collector and a negative electrode tab connected to the negative current collector, the negative current collector is coated with the negative active material layer, and the negative electrode tab is not coated with the negative active material layer. The material of the negative current collector can be copper, and the negative active material layer includes a negative active material, and the negative active material can be carbon or silicon, etc. The material of the separator can be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene), etc.

[0062] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the battery devices and electrical equipment described above, but can also be applied to all battery devices including a box and electrical equipment using the battery devices. However, for the sake of simplicity, the following embodiments are described using electric vehicles as examples.

[0063] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1 provided for some embodiments of the present application. Vehicle 1 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 2 is provided inside the vehicle 1, and the battery device 2 may be provided at the bottom, head or tail of the vehicle 1. The battery device 2 may be used to power the vehicle 1, for example, the battery device 2 may be used as an operating power source for the vehicle 1. The vehicle 1 may also include a controller 102 and a motor 101, and the controller 102 is used to control the battery to power the motor 101, for example, for the starting, navigation and working power requirements of the vehicle 1 during driving.

[0064] In some embodiments of the present application, the battery device 2 can not only serve as an operating power source for the vehicle 1 , but also serve as a driving power source for the vehicle 1 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1 .

[0065] Figure 2 It is a schematic diagram of the structure of a battery device 2 provided in one embodiment of the present application.

[0066] The battery device 2 mentioned in the embodiment of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells 3, and the plurality of battery cells 3 are connected in series, in parallel or in mixed connection through a busbar.

[0067] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells 3 .

[0068] As an example, the battery cell assembly may be a battery module 201, and the battery module 201 is formed by arranging and fixing a plurality of battery cells 3 to form an independent module. As an example, the battery module 201 may be formed by bundling a plurality of battery cells 3 by a cable tie.

[0069] In some embodiments, the battery device may be a battery pack, which includes a case 202 and one or more battery cell assemblies, wherein the battery cell assemblies are housed in the case 202 .

[0070] As an example, the battery cell assembly may be a battery module 201 , and the battery cell assembly may be accommodated in the box by fixing the battery module 201 in the box.

[0071] As an example, the battery cell assembly may also be accommodated in the box body 202 by directly fixing the plurality of battery cells 3 to the box body 202 .

[0072] As an example, the box 202 may include a first box 2021 and a second box 2022. The first box 2021 and the second box 2022 are buckled together to form a closed space inside the box 202 to accommodate the battery monomer assembly. The closed space here means covering or closing, which can be sealed or unsealed. The first box 2021 can be a top cover or a bottom plate.

[0073] As an example, the box body 202 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that a closed space is formed inside the box body 202 to accommodate the battery cell assembly.

[0074] In some embodiments, the box 202 can be used as a part of the chassis structure of the vehicle. For example, a part of the box 202 can become at least a part of the floor of the vehicle, or a part of the box 202 can become at least a part of the cross beam and the longitudinal beam of the vehicle.

[0075] Figure 3 It is a structural schematic diagram of a battery module 201 provided in one embodiment of the application.

[0076] In some embodiments, Figure 2 and Figure 3 As shown, there are multiple battery cells 3, and the multiple battery cells 3 are first connected in series, parallel or mixed to form a battery module 201. The multiple battery modules 201 are then connected in series, parallel or mixed to form a whole, and are accommodated in the box 202.

[0077] The multiple battery cells 3 in the battery module 201 can be electrically connected through a busbar component to achieve parallel connection, series connection or mixed connection of the multiple battery cells 3 in the battery module 201 .

[0078] See also Figure 4 , Figure 5 and Figure 6 , Figure 4 is a structural schematic diagram of a battery device provided in one embodiment of the present application; Figure 5 It is a structural schematic diagram of a socket connector of a battery device provided in one embodiment of the present application; Figure 6 is an exploded view of a socket connector of a battery device provided in one embodiment of the present application; Figure 7 yes Figure 5 Cross-sectional view at AA in the middle.

[0079] First, as Figures 4 to 7 As shown, the present application provides a battery device 2, which includes a box body 202, a battery cell 3 and a socket connector 4, wherein the battery cell 3 is arranged in the box body 202; the socket connector 4 includes a shell 41, a first plug-in terminal 42 and a first seal 43, the shell 41 includes a side wall 411, a chamber enclosed by the side wall 411 and a fixing portion 412 connected to the side wall 411 in the chamber, the fixing portion 412 includes a connecting hole 413 provided through, the first plug-in terminal 42 is fixed to the connecting hole 413, the first plug-in terminal 42 includes a first end 421 and a second end 422 provided opposite to each other along a first direction X, the first end 421 is electrically connected to the battery cell 3, the first end 421 and the second end 422 are provided on both sides of the fixing portion 412, and the first seal 43 is sealed and connected between the first plug-in terminal 42 and the hole wall of the connecting hole 413 facing the plug-in terminal.

[0080] In the solution of the embodiment of the present application, the battery device 2 includes a box body 202, a battery cell 3 and a socket connector 4, the battery cell 3 is arranged in the box body 202, the socket connector 4 includes a shell 41, a first plug terminal 42 and a first seal 43, the shell 41 includes a side wall 411, a chamber enclosed by the side wall 411 and a fixing portion 412 connected to the side wall 411 in the chamber, the first plug terminal 42 includes a first end 421 and a second end 422 arranged opposite to each other along a first direction X, the first end 421 is electrically connected to the electrode terminal, and the second end 42 2 passes through the communicating hole 413 of the fixing portion 412, the first end 421 and the second end 422 are respectively arranged on both sides of the fixing portion 412, the fixing portion 412 is used to fix the first plug-in terminal 42, and the first sealing member 43 is sealingly connected between the first plug-in terminal 42 and the hole wall of the communicating hole 413 facing the first plug-in terminal 42, so as to improve the sealing performance of the socket connector 4, improve the problem that foreign impurities and water vapor penetrate into the box body 202 through the gap between the fixing portion 412 of the socket connector 4 and the first plug-in terminal 42, and improve the sealing performance of the battery device 2.

[0081] The battery cell 3 is accommodated in the box body 202, and the box body 202 is provided with an opening, and at least part of the socket connector 4 extends out of the box body 202 through the opening, and one end of the socket connector 4 is electrically connected to the battery cell 3, and the other end is matched with the plug connector 5 of other devices. The socket connector 4 can be directly electrically connected to the battery cell 3, or the socket connector 4 can be indirectly connected to the battery cell 3 through other devices in the box body 202, and the other devices can be BMS (Battery Management System; battery management system).

[0082] Optionally, the socket connector 4 and the box body 202 are connected to keep the socket connector 4 and the box body 202 stable.

[0083] Optionally, the side wall 411 encloses a chamber with openings at both ends in the first direction X, and the side wall 411 and the box body 202 are sealed and connected to fix the socket connector 4.

[0084] Optionally, the side wall 411 and the fixing portion 412 are formed separately, and the fixing portion 412 is adhesively connected to the side wall 411 to facilitate adjustment of the relative position of the fixing portion 412 and the side wall 411 in the first direction X; or the side wall 411 and the fixing portion 412 are formed as one piece to improve the sealing performance between the fixing portion 412 and the side wall 411, thereby enhancing the overall sealing performance of the socket connector 4.

[0085] Exemplarily, the side wall 411 and the fixing portion 412 are integrally injection molded, so that the housing 41 has excellent insulation performance.

[0086] The fixing portion 412 includes a connecting hole 413 extending through the fixing portion 412 along the first direction X. A single first plug terminal 42 is plugged into the connecting hole 413. The connecting hole 413 is used to fix the first plug terminal 42. Exemplarily, the fixing portion 412 is provided with 1, 2, 10, 16, etc. connecting holes 413.

[0087] Optionally, the shape of the connecting hole 413 matches the shape of the first plug-in terminal 42 to facilitate the combination of the first plug-in terminal 42 and the fixing portion 412. For example, if the first plug-in terminal 42 is cylindrical, the connecting hole 413 is a circular hole, or if the first plug-in terminal 42 is cubic, the connecting hole 413 is a rectangular hole.

[0088] The first plug-in terminal 42 is a conductive material. For example, the first plug-in terminal 42 is made of copper or copper alloy.

[0089] Exemplarily, one, two, ten, sixteen, etc. first plug terminals 42 are disposed in the socket connector 4 .

[0090] The first plug-in terminal 42 includes a first end 421 and a second end 422 which are arranged opposite to each other in the first direction X. The first end 421 is electrically connected to the battery cell 3 , and the second end 422 passes through the connecting hole 413 along the first direction X and extends toward the chamber opening. The second end 422 is used to be electrically connected to the plug connector 5 .

[0091] The first seal 43 is disposed between the outer surface of the first plug terminal 42 and the hole wall of the communicating hole 413 facing the first plug terminal 42 , so that the first seal 43 can seal the gap between the outer surface of the first plug terminal 42 and the hole wall of the communicating hole 413 facing the first plug terminal 42 .

[0092] Optionally, the first sealing member 43 is disposed around the first plug-in terminal 42 to enhance the sealing effect of the first sealing member 43 .

[0093] Exemplarily, the first sealing member 43 is an elastic member, and the material of the first sealing member 43 is rubber, silicone, foam, or the like.

[0094] Optionally, the first sealing member 43 is disposed in the communicating hole 413 , so that the first sealing member 43 improves the sealing performance of the socket connector 4 while reducing the material cost of the socket connector 4 .

[0095] Optionally, the first sealing member 43 is connected to at least one of the hole wall of the connecting hole 413 and the first plug-in terminal 42 , and the connection method may be bonding, injection molding, or vulcanization molding.

[0096] See also Figure 8 , Figure 8It is a partial structural diagram of a socket connector of a battery device provided in one embodiment of the present application.

[0097] In some embodiments, Figure 7 and Figure 8 As shown, the first sealing member 43 and the first plug-in terminal 42 are fixedly connected.

[0098] In these embodiments, the first sealing member 43 and the first plug-in terminal 42 are fixedly connected to reduce the difficulty of disposing the first sealing member 43 .

[0099] The first sealing member 43 and the first plug-in terminal 42 are fixedly connected. When the first plug-in terminal 42 is inserted into the connecting hole 413 , the first sealing member 43 is accommodated and fixed in the connecting hole to reduce the difficulty of processing the first sealing member 43 .

[0100] Optionally, the first sealing member 43 is disposed around the first plug-in terminal 42 , so that the first sealing member 43 surrounds and fills the first sealing member 43 and the hole wall of the communicating hole 413 , so as to improve the sealing performance of the socket connector 4 .

[0101] Optionally, the first sealing member 43 is disposed at a partial area of ​​the first plug-in terminal 42 in the first direction X, so that after the first plug-in terminal 42 is plugged into the connecting hole 413 , at least a portion of the first sealing member 43 is accommodated in the connecting hole 413 .

[0102] Optionally, the first sealing member 43 and the first plug-in terminal 42 are connected by bonding or vulcanization molding.

[0103] In some embodiments, Figure 7 and Figure 8 As shown, the first sealing member 43 is a rubber member, and the first sealing member 43 and the first plug-in terminal 42 are formed into one piece through a vulcanization process.

[0104] In these embodiments, the first seal 43 is a rubber member, and the first seal 43 and the first plug-in terminal 42 are formed into one piece through a vulcanization process, which can not only improve the connection reliability between the first seal 43 and the first plug-in terminal 42, but also improve the sealing performance between the first seal 43 and the first plug-in terminal 42, so as to improve the overall sealing reliability of the battery device 2.

[0105] The first sealing member 43 and the first plug-in terminal 42 are integrally formed by a vulcanization process. The vulcanization molding process can not only improve the connection strength between the first sealing member 43 and the first plug-in terminal 42 , but also simplify the processing of the socket connector 4 .

[0106] Exemplarily, the first sealing member 43 may also be a silicone sealing member, and the silicone sealing member and the first plug-in terminal 42 are integrally formed by a vulcanization process.

[0107] In some embodiments, Figure 7 and Figure 8 As shown, the first sealing member 43 includes a base 431 and a flange 432 . The base 431 is sleeved on the first plug-in terminal 42 , and the flange 432 surrounds the outer surface of the base 431 .

[0108] In these embodiments, the first seal 43 includes a base 431 sleeved on the first plug-in terminal 42, and a flange 432 surrounding the outer surface of the base 431, so that when the first seal 43 is sealed between the hole wall of the connecting hole 413 and the first plug-in terminal 42, a longer and more tortuous sealing path can be formed, thereby improving the problem of external impurities and water vapor invading the box body 202 through the gap between the fixing portion 412 of the socket connector 4 and the first plug-in terminal 42, thereby improving the sealing performance of the battery device 2.

[0109] The first sealing member 43 includes a base 431 and a flange 432 . The base 431 is disposed around the outer surface of the first plug-in terminal 42 , and the flange 432 is disposed around and on a surface of the base 431 facing away from the first plug-in terminal 42 .

[0110] The size of the single flange 432 in the first direction X is smaller than the size of the base 431 in the first direction X. After the first sealing member 43 and the first plug terminal 42 enter the communication hole 413, the flange 432 disposed between the base 431 and the hole wall of the communication hole 413 is squeezed and deformed to form a bent sealing path, and the bent, extended and longer sealing path helps to block the passage of water vapor impurities from the outside, so as to improve the sealing performance of the socket connector 4.

[0111] Exemplarily, the shape of the flange 432 can be designed by oneself, and the flange 432 of a circular or rectangular shape is arranged around the base 431 .

[0112] Optionally, the base 431 and the flange 432 are integrally formed to enhance the structural strength of the first sealing member 43 .

[0113] In some embodiments, Figure 7 and Figure 8 As shown, at least two flanges 432 are arranged along the first direction X at intervals.

[0114] In these embodiments, at least two flanges 432 are spaced apart along the first direction X to improve the sealing performance of the first sealing member 43 .

[0115] The number of flanges 432 can be designed by oneself. For example, 2, 3, 5, etc. flanges 432 are arranged at intervals in the first direction X.

[0116] In some embodiments, Figure 7 and Figure 8As shown, the first sealing member 43 is disposed on one side of the fixing portion 412 close to the first end 421 .

[0117] In these embodiments, the first seal 43 is disposed on one side of the fixing portion 412 close to the first end 421 , so that when the first plug-in terminal 42 is plugged into the fixing portion 412 , the first seal 43 is simultaneously fixed in the fixing portion 412 , thereby reducing the difficulty of assembling the socket connector 4 .

[0118] The first seal 43 is arranged on one side of the fixing portion 412 close to the first end 421, which means that the fixing portion 412 is arranged in two half-areas along the first direction X, and the two half-areas have the same size in the first direction X. The two half-areas are respectively a first half-area close to the first end 421 and a second half-area close to the second end 422. Along the first direction X, the size of the first seal 43 located in the first half-area is greater than or equal to the size of the first seal 43 located in the second half-area.

[0119] During the process of the first plug-in terminal 42 being inserted into the connecting hole 413, the second end 422 passes through the first half zone and the second half zone in sequence to pass through the fixing portion 412. Therefore, the first seal 43 is arranged on the side of the fixing portion 412 close to the first end 421 to facilitate the fixing of the first seal 43 during the matching process between the first plug-in terminal 42 and the fixing portion 412.

[0120] In some embodiments, Figure 7 and Figure 8 As shown, the communicating hole 413 includes a first through hole 4131 and a second through hole 4132 that are interconnected. The aperture of the first through hole 4131 is larger than the aperture of the second through hole 4132 . The first sealing member 43 is disposed in the first through hole 4131 .

[0121] In these embodiments, the connecting hole 413 includes a first through hole 4131 and a second through hole 4132 that are connected to each other. The aperture of the first through hole 4131 is larger than the aperture of the second through hole 4132. The first sealing member 43 is disposed in the first through hole 4131 to reduce the difficulty of assembling the socket connector 4. The first sealing member 43 with a larger thickness has a longer service life and also helps to improve the sealing performance of the socket connector 4.

[0122] The connecting hole 413 includes a first through hole 4131 and a second through hole 4132 arranged along the first direction X and connected to each other. The first sealing member 43 is sealingly arranged between the hole wall of the first through hole 4131 and a portion of the outer surface of the first plug-in terminal 42. The hole wall of the second through hole 4132 abuts against a portion of the outer surface of the first plug-in terminal 42 to fix the first plug-in terminal 42.

[0123] Optionally, the first through hole 4131 is disposed on the side of the fixing portion 412 facing the first end 421 , and the second through hole 4132 is disposed on the side of the fixing portion 412 facing the second end 422 . When the first plug-in terminal 42 is plugged into the fixing portion 412 , the first sealing member 43 is accommodated in the first through hole 4131 .

[0124] Optionally, the size of the first seal 43 in the first direction X is the same as the size of the first through hole 4131 in the first direction X, so that the fixing portion 412 stops the first seal 43 in the first direction X, reducing the risk of the first seal 43 escaping from the connecting hole 413 along the first direction X, thereby improving the sealing reliability of the socket connector 4.

[0125] In some embodiments, Figure 7 and Figure 8 As shown, the dimension of the fixing portion 412 in the first direction X is L1, and the dimension of the first sealing member 43 in the first direction X is L2, satisfying 0.6*L1≤L2.

[0126] In these embodiments, when the above conditions are met, the first sealing member 43 has a sufficient size to seal the gap between the fixing portion 412 and the first plug-in terminal 42 , thereby improving the sealing reliability of the socket connector 4 .

[0127] Optionally, the size of the first sealing member 43 in the first direction X is the same as the size of the fixing portion 412 in the first direction X, so that a larger first sealing member 43 can be provided to improve the sealing performance of the socket connector 4 .

[0128] Exemplarily, a dimension of the first through hole 4131 in the first direction X is greater than or equal to 60% of a dimension of the fixing portion 412 in the first direction X.

[0129] Exemplarily, the dimension of the first sealing member 43 in the first direction X is 60%, 80%, or 100% of the dimension of the fixing portion 412 in the first direction X.

[0130] See also Fig. 9 , Fig. 9 It is a partial structural schematic diagram of a battery device provided in one embodiment of the present application.

[0131] In some embodiments, Figures 7 to 9 As shown, at least a portion of the side wall 411 extends out of the box body 202 , and the socket connector 4 further includes a second sealing member 44 , which is sealed and connected between the side wall 411 and the box body 202 .

[0132] In these embodiments, the second sealing member 44 is used to improve the sealing performance between the side wall 411 and the box body 202 , thereby improving the sealing reliability of the battery device 2 .

[0133] Optionally, the side wall 411 and the box body 202 are connected by bolts, and the second sealing member 44 is disposed between the side wall 411 and the box body 202 to seal the gap between the side wall 411 and the box body 202 .

[0134] Exemplarily, the second sealing member 44 may be a sealing gasket or a sealing strip.

[0135] Optionally, the second sealing member 44 surrounds the outer surface of the side wall 411 to seal the gap between the side wall 411 and the box body 202 .

[0136] See also Fig.10 , Fig.10 It is a partial structural exploded diagram of a battery device 2 provided in one embodiment of the present application.

[0137] Second, as Fig. 9 and Fig.10 As shown, the present application provides an electrical device 6, comprising a battery device 2 and a plug connector 5 of the above-mentioned first aspect embodiment, the plug connector 5 comprising a shell 51 and a second plug terminal 52 arranged in the shell 51, and the second plug terminal 52 is connected to the first plug terminal 42.

[0138] In the scheme of the embodiment of the present application, the socket connector 4 and the plug connector 5 are connected, and are sealed and connected between the first plug-in terminal 42 and the hole wall of the connecting hole 413 facing the first plug-in terminal 42 through the first sealing member 43, so as to improve the sealing performance of the socket connector 4, improve the problem of external impurities and water vapor invading the box body 202 through the gap between the fixed part 412 of the socket connector 4 and the first plug-in terminal 42, and improve the problem of water vapor entering the connection interface between the first plug-in terminal 42 and the second plug-in terminal 52 through the fixed part 412 and the first plug-in terminal 42, thereby improving the reliability of the electrical device 6.

[0139] The plug connector 5 includes a shell 51 and a second plug-in terminal 52 arranged in the shell 51. The socket connector 4 and the plug connector 5 are connected, and the first plug-in terminal 42 and the second plug-in terminal 52 are abutted or clamped to achieve electrical connection between the socket connector 4 and the plug connector 5.

[0140] In some embodiments, Fig. 9 and Fig.10 As shown, part of the shell 51 extends into the cavity, and the socket connector 4 further includes a third sealing member 53 , which surrounds the outer circumference of the shell 51 , and is sealingly connected to the shell 51 and the housing 41 .

[0141] In these embodiments, the socket connector 4 further includes a third sealing member 53 , and the third sealing member 53 is used to improve the sealing performance between the shell 51 and the housing 41 .

[0142] Optionally, the third sealing member 53 is bonded or clamped to the outer surface of the housing 51 to improve the connection reliability between the third sealing member 53 and the housing 51 .

[0143] The third sealing member 53 is sealingly connected between the outer shell 51 and the housing 41 to reduce the risk of moisture and impurities in the air invading the connection interface between the first plug-in terminal 42 and the second plug-in terminal 52 through the gap between the outer shell 51 and the housing 41, thereby reducing the risk of short circuit.

[0144] Exemplarily, the third sealing member 53 is a sealing ring or a sealing strip.

[0145] In some embodiments, Fig. 9 and Fig.10 As shown, the electrical device 6 also includes a conductive member 55, part of which extends into the shell 51 and is connected to the second plug-in terminal 52. The socket connector 4 also includes a fourth sealing member 54, which surrounds the inner circumference of the shell 51 and is sealed to the shell 51 and the conductive member 55.

[0146] In these embodiments, the socket connector 4 further includes a fourth sealing member 54 , and the fourth sealing member 54 is used to improve the sealing performance between the housing 51 and the conductive member 55 .

[0147] One end of the second plug-in terminal 52 is electrically connected to the first plug-in terminal 42 , and the other end thereof is connected to the conductive member 55 . The conductive member 55 and the second plug-in terminal 52 are connected by bolts, clamps, or welding.

[0148] Optionally, the fourth sealing member 54 is bonded or clamped to the inner surface of the housing 51 to improve the connection reliability between the fourth sealing member 54 and the conductive member 55 .

[0149] In some embodiments, Figures 1 to 10As shown, the battery device 2 includes a box body 202, a battery cell 3 and a socket connector 4, the battery cell 3 is arranged in the box body 202; the socket connector 4 includes a shell 41, a first plug terminal 42 and a first sealing member 43, the shell 41 includes a side wall 411, a chamber enclosed by the side wall 411 and a fixing portion 412 connected to the side wall 411 in the chamber, the fixing portion 412 includes a connecting hole 413 arranged through, the first plug terminal 42 is fixed to the connecting hole 413, the connecting hole 413 includes a first through hole 4131 and a second through hole 4132 connected to each other, the aperture of the first through hole 4131 is larger than the aperture of the second through hole 4132, the first sealing member 43 is arranged in the first through hole 4131, the first plug terminal 42 includes a first end 4131 arranged opposite to each other along the first direction X 21 and a second end 422, the first end 421 is electrically connected to the battery cell 3, the first end 421 and the second end 422 are respectively arranged on both sides of the fixing portion 412, the first sealing member 43 is sealingly connected between the first plug-in terminal 42 and the hole wall of the connecting hole 413 facing the plug-in terminal, the first sealing member 43 is a rubber member, the first sealing member 43 and the first plug-in terminal 42 are formed as a whole through a vulcanization process, the first sealing member 43 includes a base 431 and a flange 432, the base 431 is sleeved on the first plug-in terminal 42, the flange 432 surrounds the outer surface of the base 431, at least two flanges 432 are spaced apart along the first direction X, the size of the fixing portion 412 in the first direction X is L1, the size of the first sealing member 43 in the first direction X is L2, and 0.6*L1≤L2 is satisfied.

[0150] In the solution of the embodiment of the present application, the battery device 2 includes a box body 202, a battery cell 3 and a socket connector 4, the battery cell 3 is arranged in the box body 202, the socket connector 4 includes a shell 41, a first plug terminal 42 and a first seal 43, the shell 41 includes a side wall 411, a chamber enclosed by the side wall 411 and a fixing portion 412 connected to the side wall 411 in the chamber, the first plug terminal 42 includes a first end 421 and a second end 422 arranged opposite to each other along a first direction X, the first end 421 is electrically connected to the electrode terminal, and the second end 42 2 passes through the communicating hole 413 of the fixing portion 412, the first end 421 and the second end 422 are respectively arranged on both sides of the fixing portion 412, the fixing portion 412 is used to fix the first plug-in terminal 42, and the first sealing member 43 is sealingly connected between the first plug-in terminal 42 and the hole wall of the communicating hole 413 facing the first plug-in terminal 42, so as to improve the sealing performance of the socket connector 4, improve the problem that foreign impurities and water vapor penetrate into the box body 202 through the gap between the fixing portion 412 of the socket connector 4 and the first plug-in terminal 42, and improve the sealing performance of the battery device 2.

[0151] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery device, characterized in that: include: Box; A battery cell is disposed in the box; A socket connector includes a shell, a first plug-in terminal and a first sealing member, wherein the shell includes a side wall, a chamber enclosed by the side wall and a fixing portion connected to the side wall in the chamber, wherein the fixing portion includes a connecting hole arranged through the connecting hole, wherein the first plug-in terminal is fixed to the connecting hole, wherein the first plug-in terminal includes a first end and a second end arranged opposite to each other in a first direction, wherein the first end is electrically connected to the battery cell, wherein the first end and the second end are arranged on both sides of the fixing member, and wherein the first sealing member is sealingly connected between the plug-in terminal and the hole wall of the connecting hole facing the plug-in terminal.

2. The battery device according to claim 1, characterized in that: The first sealing member and the first plug-in terminal are fixedly connected.

3. The battery device according to claim 2, characterized in that: The first sealing member is a rubber member, and the first sealing member and the first plug-in terminal are integrally formed through a vulcanization process.

4. The battery device according to claim 2, characterized in that: The first sealing member comprises a base and a flange. The base is sleeved on the first plug-in terminal, and the flange surrounds the outer surface of the base.

5. The battery device according to claim 4, characterized in that: At least two of the flanges are spaced apart along the first direction.

6. The battery device according to claim 2, characterized in that: The first sealing member is disposed on a side of the fixing portion close to the first end.

7. The battery device according to claim 6, characterized in that: The communicating hole comprises a first through hole and a second through hole that are connected to each other, the aperture of the first through hole is larger than the aperture of the second through hole, and the first sealing member is disposed in the first through hole.

8. The battery device according to claim 1, characterized in that: A dimension of the fixing portion in the first direction is L1, and a dimension of the first sealing member in the first direction is L2, satisfying 0.6*L1≤L2.

9. The battery device according to claim 1, characterized in that: At least a portion of the side wall extends out of the box body, and the socket connector further includes a second sealing member, which is sealed and connected between the side wall and the box body.

10. An electrical device, characterized in that: The invention comprises a battery device and a plug connector as described in any one of claims 1 to 9, wherein the plug connector comprises a housing and a second plug terminal arranged in the housing, and the second plug terminal is connected to the first plug terminal.

11. The electrical device according to claim 10, characterized in that: A portion of the shell extends into the chamber, and the socket connector further includes a third sealing member, which surrounds the outer circumference of the shell and is sealingly connected to the shell and the housing.

12. The electrical device according to claim 10, characterized in that: The electrical device also includes a conductive member, part of which extends into the shell and is connected to the second plug-in terminal. The socket connector also includes a fourth sealing member, which surrounds the inner circumference of the shell and is sealed to the shell and the conductive member.

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