Battery device, electric equipment and intermediate connector

Abstract

A battery device, an electric device and an intermediate connector, the battery device comprising: a first electrical element having a first connection terminal; a second electrical element having a second connection terminal; and an intermediate connector; the intermediate connector comprises a housing which is provided with an inner cavity, and a first insertion port and a second insertion port which are communicated with the inner cavity; the first elastic electric connecting piece is provided with a first abutting part which abuts against the shell and is configured to apply elastic force to the inserted first connecting terminal; the second elastic electric connecting piece and the first abutting part are oppositely arranged on the inner side of the second inserting opening, and the second elastic electric connecting piece is configured to apply elastic force to the inserted second connecting terminal, so that electric connection is formed through the first elastic electric connecting piece; the insertion direction of the first connecting terminal is opposite to that of the second connecting terminal, and the orthographic projection of the first connecting terminal on a reference plane perpendicular to the insertion direction does not coincide with the orthographic projection of the second connecting terminal. The embodiment of the utility model can improve the reliability.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of batteries, and in particular to a battery device, a power consumption device and an intermediate connector. BACKGROUND

[0002] Secondary batteries, especially lithium ion batteries, have the advantages of high voltage, large specific energy, long cycle life, green and pollution-free, wide operating temperature range and small self-discharge, and are widely used in portable electronic devices and large new energy electric vehicles, which have great significance in solving environmental pollution and energy crisis. With the wide application of lithium ion batteries, improving the reliability of the batteries has become a problem closely watched by producers. CONTENT OF THE INVENTION

[0003] In one aspect of the present disclosure, a battery device, a power consumption device and an intermediate connector are provided, the battery device comprising:

[0004] a first electrical element having a first connection terminal;

[0005] a second electrical element having a second connection terminal; and

[0006] an intermediate connector for establishing an electrical connection between the first connection terminal and the second connection terminal;

[0007] wherein the intermediate connector comprises:

[0008] a housing having an inner cavity and a first insertion opening and a second insertion opening communicating with the inner cavity;

[0009] a first elastic electrical connecting member disposed in the inner cavity and having a first abutting portion abutting against the housing, configured to apply an elastic force to the first connection terminal inserted into the first insertion opening to make electrical contact with the first connection terminal; and

[0010] a second elastic electrical connecting member disposed in the inner cavity and opposite to the first abutting portion on the inner side of the second insertion opening, the second elastic electrical connecting member being configured to apply an elastic force to the second connection terminal inserted into the second insertion opening to make electrical contact between the second connection terminal and the first abutting portion, thereby forming an electrical connection between the first connection terminal and the second connection terminal via the first elastic electrical connecting member; the insertion direction of the first connection terminal relative to the first insertion opening is opposite to the insertion direction of the second connection terminal relative to the second insertion opening, and the orthographic projection of the first connection terminal on a reference plane perpendicular to the insertion direction of the first connection terminal relative to the first insertion opening does not overlap with the orthographic projection of the second connection terminal on the reference plane.

[0011] In the present embodiment, the intermediate connector is configured to provide the first elastic electrical connecting member and the second elastic electrical connecting member in the housing, to apply an elastic force to the first connecting terminal inserted into the first insertion opening of the housing via the first elastic electrical connecting member so as to make electrical contact with the first connecting terminal, and to apply an elastic force to the second connecting terminal inserted into the second insertion opening of the housing via the second elastic electrical connecting member arranged opposite to the first abutting portion of the first elastic electrical connecting member so as to make electrical contact with the first abutting portion, so that the electrical connection between the first connecting terminal and the second connecting terminal is formed via the first elastic electrical connecting member.

[0012] When the second connecting terminal is inserted into the second insertion opening, the first abutting portion in contact with the second connecting terminal can maintain its position without affecting the elastic force between the first elastic electrical connecting member and the first connecting terminal, due to the first abutting portion of the first elastic electrical connecting member abutting against the housing, so that the risk of poor contact of the other terminal inserted on one side due to the thickness of the terminal inserted on the other side in the related art is reduced or eliminated, thereby improving the reliability of the battery device.

[0013] By making the insertion direction of the first connecting terminal relative to the first insertion opening opposite to the insertion direction of the second connecting terminal relative to the second insertion opening, and the orthographic projection of the first connecting terminal and the second connecting terminal on a reference plane perpendicular to the insertion direction not coinciding, so as to be staggered in the inner cavity, the first abutting portion of the first elastic electrical connecting member and the second elastic electrical connecting member can be conveniently arranged in the housing, and the interference between the first elastic electrical connecting member and the second elastic electrical connecting member, and between the first connecting terminal and the second connecting terminal, is reduced.

[0014] In some embodiments, the second elastic electrical connecting member has a second abutting portion abutting against the housing, the first elastic electrical connecting member is arranged opposite to the second abutting portion on the inner side of the first insertion opening, and the first elastic electrical connecting member is configured to apply an elastic force to the first connecting terminal inserted into the first insertion opening so as to make electrical contact with the second abutting portion, so that the electrical connection between the first connecting terminal and the second connecting terminal is also formed via the second elastic electrical connecting member.

[0015] In the present embodiment, when the first connecting terminal is inserted into the first insertion opening, the electrical connection between the first connecting terminal and the second connecting terminal can be formed via both the first elastic electrical connecting member and the second elastic electrical connecting member, and the first elastic electrical connecting member and the second elastic electrical connecting member are equivalent to be connected in parallel between the first connecting terminal and the second connecting terminal, so as to reduce the total resistance value between the first connecting terminal and the second connecting terminal, and improve the conductivity of the intermediate connector.

[0016] In some embodiments, the first elastic electric connecting piece further has a first elastic free end fixedly connected with or integrally formed with the first abutting part, and the first elastic free end is arranged opposite to the second abutting part inside the first insertion opening; the second elastic electric connecting piece further has a second elastic free end fixedly connected with or integrally formed with the second abutting part, and the second elastic free end is arranged opposite to the first abutting part inside the second insertion opening.

[0017] In the present embodiment, the first elastic free end of the first elastic electric connecting piece can be in the form of a spring piece or other forms, which can be in contact with the inserted first connecting terminal and deformed under the extrusion of the first connecting terminal, so as to form the extrusion force on the first connecting terminal. The first elastic free end is arranged opposite to the second abutting part inside the first insertion opening, so that when the first connecting terminal is inserted into the first insertion opening, the two ends of the first connecting terminal in the direction perpendicular to the insertion direction are in contact with the first elastic free end and the second abutting part respectively, and the first connecting terminal is pressed tightly against the first elastic free end and the second abutting part under the elastic action of the first elastic free end, so as to obtain good electrical contact.

[0018] The second elastic free end of the second elastic electric connecting piece can be in the form of a spring piece or other forms, which can be in contact with the inserted second connecting terminal and deformed under the extrusion of the second connecting terminal, so as to form the extrusion force on the second connecting terminal. The second elastic free end is arranged opposite to the first abutting part inside the second insertion opening, so that when the second connecting terminal is inserted into the second insertion opening, the two ends of the second connecting terminal in the direction perpendicular to the insertion direction are in contact with the second elastic free end and the first abutting part respectively, and the second connecting terminal is pressed tightly against the second elastic free end and the first abutting part under the elastic action of the second elastic free end, so as to obtain good electrical contact.

[0019] In some embodiments, the first elastic free end is bent relative to the first abutting part and forms a V-shaped structure with the first abutting part; and / or

[0020] The second elastic free end is bent relative to the second abutting part and forms a V-shaped structure with the second abutting part.

[0021] In the present embodiment, the first elastic free end can be integrally formed with the first abutting part by bending the first elastic electric connecting piece to form the arc-shaped elastic region of the first elastic free end and the first abutting part. Here, the bottom of the V-shaped structure can be in the form of an arc as shown in the figure, or in the form of a broken line. Such a bending structure can enable the first elastic free end to provide a stable elastic force to the first connecting terminal, so as to press the second abutting part tightly.

[0022] The second elastic free end can be integrally formed with the second abutting portion, and the second elastic free end and the arc-shaped elastic region of the first abutting portion are formed by bending the second elastic electric connecting piece. Here, the bottom of the V-shaped structure can be arc-shaped or in the form of a broken line. Such a bending structure can provide a stable elastic force for the second elastic free end to the second connecting terminal, so as to tightly abut the first abutting portion.

[0023] In some embodiments, a first locking structure is arranged between the first connecting terminal and the second abutting portion, and the first locking structure is configured to lock the relative position between the first connecting terminal and the second abutting portion when the first connecting terminal is inserted into the first insertion opening to a preset depth.

[0024] A second locking structure is arranged between the second connecting terminal and the first abutting portion, and the second locking structure is configured to lock the relative position between the second connecting terminal and the first abutting portion when the second connecting terminal is inserted into the second insertion opening to a preset depth.

[0025] In the present embodiment, when the first connecting terminal is inserted into the first insertion opening to a preset depth, the first locking structure can lock the relative position between the first connecting terminal and the second abutting portion, so that the first connecting terminal and the second abutting portion are not easily loosened. In this way, the fixing structure between the intermediate connector and the first electrical element or the second electrical element on the outside can be reduced or omitted, thereby simplifying the design.

[0026] The arrangement position of the second locking structure can be determined according to the suitable depth of the second connecting terminal inserted into the second insertion opening. In this way, when the second connecting terminal is inserted into the second insertion opening to a preset depth, the second locking structure can lock the relative position between the second connecting terminal and the first abutting portion, so that the second connecting terminal and the first abutting portion are not easily loosened. In this way, the fixing structure between the intermediate connector and the first electrical element or the second electrical element on the outside can be reduced or omitted, thereby simplifying the design.

[0027] In some embodiments, the shell is an electrically conductive member, and the first abutting portion and the second abutting portion are electrically connected with the shell or integrally formed with the shell, so as to further form an electrical connection between the first connecting terminal and the second connecting terminal via the shell.

[0028] In the present embodiment, the use of an electrically conductive member as the shell can further form an electrical connection between the first connecting terminal and the second connecting terminal via the shell, which is conducive to further reducing the resistance of the intermediate connector and improving the electrical conductivity. In addition, the use of the one-piece forming process can reduce the manufacturing difficulty and improve the production efficiency.

[0029] In some embodiments, at least one of the first connection terminal and the second connection terminal located at the part outside the shell is provided with a flexible part configured to provide a floating amount for absorbing assembly tolerance.

[0030] In the present embodiment, by providing a flexible part at the part of at least one of the first connection terminal and the second connection terminal located outside the shell, the assembly tolerance can be absorbed by the deformation floating of the flexible part, thereby reducing the requirement for assembly accuracy and facilitating the reduction of manufacturing difficulty and cost.

[0031] In some embodiments, the flexible part comprises a circular arch structure.

[0032] In the present embodiment, the flexible part adopts a circular arch structure to provide a floating amount, which is more convenient to realize in structure.

[0033] In some embodiments, one of the first electrical element and the second electrical element is a relay, a fuse or a power distribution box cover, and the other of the first electrical element and the second electrical element is a battery management unit control circuit board.

[0034] In the present embodiment, the intermediate connector can realize electrical connection between the relay, the fuse or the power distribution box cover and the battery management unit control circuit board which need to be electrically connected in the power distribution box with high integration, and meet the requirement of high integration, save space occupation, thereby facilitating the improvement of the capacity of the battery device.

[0035] In one aspect of the present disclosure, a power utilization device is provided, comprising the aforementioned battery device.

[0036] The power utilization device adopting the aforementioned battery device of the present disclosure has better reliability.

[0037] In one aspect of the present disclosure, an intermediate connector is provided for establishing electrical connection between a first connection terminal of a first electrical element and a second connection terminal of a second electrical element, the intermediate connector comprising:

[0038] a shell having an inner cavity and a first insertion opening and a second insertion opening communicating with the inner cavity;

[0039] a first elastic electrical connecting member arranged in the inner cavity and having a first abutting part abutting against the shell and configured to apply an elastic force to the first connection terminal inserted into the first insertion opening to make electrical contact with the first connection terminal; and

[0040] The second elastic electric connecting piece is arranged in the inner cavity and is arranged opposite to the first abutting portion at the inner side of the second insertion opening. The second elastic electric connecting piece is configured to apply an elastic force to a second connecting terminal inserted into the second insertion opening, so that the second connecting terminal is in electrical contact with the first abutting portion, thereby forming an electrical connection between the first connecting terminal and the second connecting terminal via the first elastic electric connecting piece. The insertion direction of the first connecting terminal relative to the first insertion opening is opposite to the insertion direction of the second connecting terminal relative to the second insertion opening. The orthogonal projection of the first connecting terminal on a reference plane perpendicular to the insertion direction of the first connecting terminal relative to the first insertion opening does not overlap with the orthogonal projection of the second connecting terminal on the reference plane.

[0041] In the embodiment, the intermediate connector is arranged with the first elastic electric connecting piece and the second elastic electric connecting piece in the housing. The first elastic electric connecting piece applies an elastic force to a first connecting terminal inserted into the first insertion opening of the housing, so that the first connecting terminal is in electrical contact. The second elastic electric connecting piece arranged opposite to the first abutting portion of the first elastic electric connecting piece applies an elastic force to a second connecting terminal inserted into the second insertion opening of the housing, so that the second connecting terminal is in electrical contact with the first abutting portion, thereby forming an electrical connection between the first connecting terminal and the second connecting terminal via the first elastic electric connecting piece.

[0042] When the second connecting terminal is inserted into the second insertion opening, the first abutting portion in contact with the second connecting terminal can maintain its position without affecting the elastic force between the first elastic electric connecting piece and the first connecting terminal, because the first elastic electric connecting piece has the first abutting portion abutting against the housing. Thus, the risk that the elastic member in the related art is affected by the thickness of the terminal inserted on one side and causes poor contact of the terminal inserted on the other side is reduced or eliminated, thereby improving the reliability of the battery device.

[0043] By making the insertion direction of the first connecting terminal relative to the first insertion opening opposite to the insertion direction of the second connecting terminal relative to the second insertion opening, and the orthogonal projection of the first connecting terminal on a reference plane perpendicular to the insertion direction not overlapping with the orthogonal projection of the second connecting terminal on the reference plane, the first connecting terminal and the second connecting terminal are staggered in the inner cavity. Thus, the first abutting portion of the first elastic electric connecting piece and the second elastic electric connecting piece can be conveniently arranged in the housing, and the possibility of interference between the first elastic electric connecting piece and the second elastic electric connecting piece, and between the first connecting terminal and the second connecting terminal, is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0044] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0045] The present disclosure can be understood more readily by reference to the following detailed description, taken in connection with the accompanying drawings, and wherein:

[0046] Figure 1 is a structural schematic view of some embodiments of the electrical device according to the present disclosure;

[0047] Figure 2 is an exploded structural schematic view of some embodiments of the battery device according to the present disclosure;

[0048] Figure 3 is an exploded schematic view of the mounting structure of the first electrical element, the intermediate connector, and the second electrical element in some embodiments of the battery device according to the present disclosure;

[0049] Figure 4 is a structural schematic view of the intermediate connector in some embodiments of the battery device according to the present disclosure;

[0050] Figure 5 is a structural schematic view of the intermediate connector in some embodiments of the battery device according to the present disclosure, in a lateral perspective view;

[0051] Figure 6 is Figure 5 a schematic view of section A-A;

[0052] Figure 7 is a cross-sectional schematic view of the insertion of the first connection terminal and the second connection terminal into the first insertion opening and the second insertion opening, respectively, of the intermediate connector in some embodiments of the battery device according to the present disclosure;

[0053] Figure 8 is a structural schematic view of the second connection terminal in some embodiments of the battery device according to the present disclosure.

[0054] It should be understood that the dimensions of the various parts shown in the drawings are not necessarily to scale. Furthermore, like or similar reference numerals are used to indicate like or similar parts.

[0055] BRIEF DESCRIPTION OF DRAWINGS

[0056] 10, first electrical element; 11, first connection terminal; 111, first protrusion;

[0057] 20, second electrical element; 21, second connection terminal; 211, second protrusion; 212, flexible portion;

[0058] 30, intermediate connector; 31, housing; 311, inner cavity; 312, first insertion port; 313, second insertion port; 32, first elastic electrical connector; 321, first abutting portion; 322, first elastic free end; 323, second recess; 33, second elastic electrical connector; 331, second abutting portion; 332, second elastic free end; 333, first recess;

[0059] 40, battery device; 41, battery cell; 42, case; 43, case cover; 44, distribution box;

[0060] 50, vehicle; 51, controller; 52, motor; 53, axle; 54, wheel;

[0061] sk1, first locking structure; sk2, second locking structure. DETAILED DESCRIPTION

[0062] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative in nature and is in no way intended to limit the disclosure, its application or uses, except as described by the appended claims. The present disclosure can be implemented in numerous different forms, as is desired for specific applications. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the relative arrangement of components and steps, the components of materials, numerical expressions, and numerical values set forth in these embodiments are to be interpreted as merely exemplary, rather than as a limitation.

[0063] The terms "first", "second", and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are used to distinguish different parts. The terms "comprise", "include" or "contain" and similar terms mean that the elements before the term encompass the elements listed after the term, and do not exclude the possibility of also encompassing other elements. "Up", "down", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship can also change accordingly.

[0064] In the present disclosure, when it is described that a specific device is located between a first device and a second device, there can be an intervening device between the specific device and the first device or the second device, or there can be no intervening device. When it is described that a specific device is connected to other devices, the specific device can be directly connected to the other devices without an intervening device, or can not be directly connected to the other devices with an intervening device.

[0065] All the terms used in the present disclosure, including technical terms or scientific terms, have the same meanings as those understood by a person of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted in the same meaning as their meanings in the context of the relevant art, and should not be interpreted in an idealized or extremely formalized sense, unless otherwise specifically defined herein.

[0066] Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered part of the specification where appropriate.

[0067] In the present disclosure, "at least one" means one or more, "a plurality of" means two or more (including two), and "at least partially" means all or a part.

[0068] In some related art, a relay connection terminal is used in a battery device to simultaneously realize the connection between a copper bar and a relay, so as to realize the transmission of signals and currents. The relay connection terminal is provided with an elastic member to realize the elastic extrusion of the relay pin and the copper bar inserted respectively.

[0069] It is found through research that the relay connection terminal in the related art, when used in battery devices of different specifications, if the relay pin of different thicknesses is inserted, the elastic member of the relay connection terminal will change the deformation amount under the extrusion of the relay pin of different thicknesses, which causes the change of the contact pressure of the copper bar and the elastic member, thereby there is a risk that the copper bar is not in good contact due to the thinner relay pin, and further affects the reliability of the battery device, which also limits the adaptability of the relay connection terminal to battery devices of different specifications.

[0070] Therefore, the embodiments of the present disclosure provide a battery device, a power utilization device and an intermediate connector, which can improve the reliability.

[0071] In one aspect of the present disclosure, a battery device is provided, comprising:

[0072] a first electrical element having a first connection terminal;

[0073] a second electrical element having a second connection terminal; and

[0074] an intermediate connector for establishing an electrical connection between the first connection terminal and the second connection terminal;

[0075] The intermediate connector comprises:

[0076] a housing having an inner cavity and a first insertion opening and a second insertion opening communicating with the inner cavity;

[0077] The first elastic electric connecting member is arranged in the inner cavity and has a first abutting portion abutting against the shell, and is configured to apply an elastic force to a first connecting terminal inserted into the first insertion opening to make electrical contact with the first connecting terminal.

[0078] The second elastic electric connecting member is arranged in the inner cavity and is arranged opposite the first abutting portion inside the second insertion opening, and is configured to apply an elastic force to a second connecting terminal inserted into the second insertion opening to make electrical contact between the second connecting terminal and the first abutting portion, thereby forming an electrical connection between the first connecting terminal and the second connecting terminal via the first elastic electric connecting member.

[0079] In the present embodiment, the intermediate connector is arranged with the first elastic electric connecting member and the second elastic electric connecting member in the shell, the first elastic electric connecting member applies an elastic force to a first connecting terminal inserted into the first insertion opening of the shell to make electrical contact with the first connecting terminal, and the second elastic electric connecting member arranged opposite the first abutting portion of the first elastic electric connecting member applies an elastic force to a second connecting terminal inserted into the second insertion opening of the shell to make electrical contact between the second connecting terminal and the first abutting portion, thereby forming an electrical connection between the first connecting terminal and the second connecting terminal via the first elastic electric connecting member.

[0080] When the second connecting terminal is inserted into the second insertion opening, the first abutting portion in contact with the second connecting terminal can maintain its position without affecting the elastic force between the first elastic electric connecting member and the first connecting terminal, thus reducing or eliminating the risk that the elastic member in the related art is affected by the thickness of the terminal inserted on one side to cause poor contact of the terminal inserted on the other side, thereby improving the reliability of the battery device.

[0081] The battery device according to the embodiments of the present disclosure can be applied to various electric devices using the battery device. The electric device can be a mobile phone, a portable device, a notebook computer, an electric vehicle, an electric automobile, a ship, a spacecraft, an electric toy, and an electric tool, etc. For example, the spacecraft includes an airplane, a rocket, a space shuttle, a spacecraft, etc. The electric toy includes a fixed or mobile electric toy, such as a game machine, an electric automobile toy, an electric ship toy, and an electric airplane toy, etc. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembling electric tool, and a railway electric tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact electric drill, a concrete vibrator, and an electric planer. The embodiments of the present disclosure do not particularly limit the above electric device. The battery device can be used for power supply of the electric device, such as a vehicle, for example, to provide power for operation or driving of the vehicle. In other embodiments, the battery device can be an energy storage device. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0082] Figure 1 is a structural schematic diagram of some embodiments of the electric device according to the present disclosure. For convenience, the electric device is taken as a vehicle 50 for example. Referring to Figure 1 , the vehicle 50 can be a fuel automobile, a gas automobile, or a new energy automobile, which can be a pure electric automobile or a hybrid electric automobile, etc. The battery device 40 can be arranged at the bottom, the front, or the rear of the vehicle 50.

[0083] The battery device 40 can be used for power supply of the vehicle 50, for example, the battery device 40 can be used as an operating power source of the vehicle 50, for example, for the circuit system of the vehicle 50, such as for the working power demand of the vehicle 50 during starting, navigation, and running. The battery device 40 can not only be used as an operating power source of the vehicle 50, but also be used as a driving power source of the vehicle 50, to replace or partially replace fuel or natural gas to provide driving force for the vehicle 50.

[0084] The inside of the vehicle 50 can also be provided with an axle 53, a wheel 54, a motor 52, and a controller 51, which is used to control the power supply of the battery device 40 to the motor 52. For example, when the battery device 40 is used as a driving power source of the vehicle 50, the battery device 40 replaces or partially replaces fuel or natural gas to provide the required power for the motor 52 at a constant speed or acceleration. The motor 52 is used to drive the axle 53 to rotate, so as to drive the wheel 54 to rotate.

[0085] Figure 2 is a structural schematic diagram of some embodiments of the battery device according to the present disclosure. Referring to Figure 2In some embodiments, the battery device 40 can include a plurality of battery cells 41, a case 42, and a case cover 43 covering an open side of the case 42. The case 42 and the case cover 43 can provide a containing space for the battery cells 41, and provide functions such as sealing and impact resistance, and can also avoid the adverse effects of liquids or other foreign objects on the charging and discharging or safety of the battery module.

[0086] The case 42 and the case cover 43 can be various shapes, such as a rectangular parallelepiped or a cylinder, etc. The case 42 can be a hollow structure with one side open, and the case cover 43 can also be a hollow structure with one side open. The open side of the case cover 43 covers the open side of the case 42, thereby forming an internal containing space. In other embodiments, the case cover 43 can be a plate structure, and covers the open side of the case 42 to form an internal containing space.

[0087] The case 42 can be independently provided, or can be part of the chassis structure of the vehicle. For example, part of the case 42 can be at least part of the floor of the vehicle, or part of the case 42 can be at least part of the cross beam and the longitudinal beam of the vehicle.

[0088] For the battery device 40 including a plurality of battery cells 41, the plurality of battery cells 41 can be arranged in at least one of the length direction and the width direction of the case 42. According to actual needs, at least one row of battery cells 41 can be provided. According to needs, one or more layers of battery cells 41 can also be provided in the height direction of the battery device 40.

[0089] In some embodiments, the plurality of battery cells 41 can form one or more battery cell groups or battery modules in series, in parallel, or in a mixed manner, and the one or more battery cell groups or battery modules are contained in the case 42. For the plurality of battery cell groups or battery modules, at least one of the length direction and the width direction of the case 42 can be arranged, and one or more layers of battery cell groups or battery modules can also be provided in the height direction of the battery device 40.

[0090] The battery cell 41 can be a secondary battery, which refers to a battery cell 41 that can be activated by charging after discharging.

[0091] The battery cell 41 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-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, etc. The embodiments of the present disclosure are not limited thereto.

[0092] The battery cell 41 includes an electrode assembly. The electrode assembly includes first and second polar plates of opposite polarity, and a separator disposed between the first and second polar plates. In some embodiments, the first polar plate is a positive polar plate and the second polar plate is a negative polar plate. In other embodiments, the first polar plate is a negative polar plate and the second polar plate is a positive polar plate. During charging and discharging of the battery cell 41, active ions (e.g., lithium ions) are intercalated and deintercalated between the positive and negative polar plates. The separator, disposed between the positive and negative polar plates, can function to prevent shorting of the positive and negative polar plates while allowing the active ions to pass through.

[0093] In some embodiments, the positive polar plate can include a positive current collector substrate and a positive active material layer disposed on at least one surface of the positive current collector substrate.

[0094] As an example, the positive current collector substrate has two surfaces opposite in the thickness direction thereof, and the positive active material layer is disposed on either one or both of the two opposite surfaces of the positive current collector substrate.

[0095] As an example, the positive current collector substrate can employ a metal foil or a composite current collector. For example, as a metal foil, silver surface-treated aluminum or stainless steel, stainless steel, copper, aluminum, nickel, a carbon electrode, carbon, nickel, or titanium, etc. can be employed. The composite current collector can include a polymer material base layer and a metal layer. The composite current collector can be formed by disposing a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver, and silver alloy, etc.) on a polymer material base (e.g., a base of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0096] As an example, the positive active material layer can include at least one of a lithium-containing phosphate, a lithium transition metal oxide, and a modified compound of each thereof. However, the present disclosure is not limited to these materials, and other conventional materials that can be used as a battery positive active material layer can also be used. These positive active material layers can be used alone or in combination with two or more. Among them, examples of the lithium-containing phosphate can include, but are not limited to, at least one of lithium iron phosphate (e.g., LiFeP04 (which can also be referred to as LFP)), a composite material of lithium iron phosphate and carbon, lithium manganese phosphate (e.g., LiMnP04), a composite material of lithium manganese phosphate and carbon, lithium manganese iron phosphate, and a composite material of lithium manganese iron phosphate and carbon. Examples of the lithium transition metal oxide can include, but are not limited to, at least one of lithium cobalt oxide (e.g., LiCo02), lithium nickel oxide (e.g., LiNi02), lithium manganese oxide (e.g., LiMn02, LiMn204), lithium nickel cobalt oxide, lithium manganese cobalt oxide, lithium nickel manganese oxide, lithium nickel cobalt manganese oxide (e.g., LiNi 1 / 3 Co 1 / 3Mn 1 / 3 O2 (which can also be referred to as NCM333 LiNi 0.5 Co 0.2 Mn 0.3 O2(also referred to as NCM 523 LiNi 0.5 Co 0.25 Mn 0.25 O2(also referred to as NCM 211 LiNi 0.6 Co 0.2 Mn 0.2 O2(also referred to as NCM 622 LiNi 0.8 Co 0.1 Mn 0.1 O2(also referred to as NCM 811 lithium nickel cobalt aluminum oxide (e.g., LiNi 0.85 Co 0.15 Al 0.05 O2), and modified compounds thereof.

[0097] In some embodiments, the negative electrode tab can include a negative electrode current collector substrate.

[0098] As an example, the negative electrode current collector substrate can employ a metal foil, a foam metal, or a composite current collector. For example, as a metal foil, silver surface-treated aluminum or stainless steel, stainless steel, copper, aluminum, nickel, a carbon electrode, a carbon, nickel, or titanium, or the like can be employed. The foam metal can be a foam nickel, a foam copper, a foam aluminum, a foam alloy, or a foam carbon, or the like. The composite current collector can include a polymer material base layer and a metal layer. The composite current collector can be formed by disposing a metal material (copper, copper alloy, nickel, nickel alloy, titanium, titanium alloy, silver, and silver alloy, or the like) on a polymer material substrate (e.g., a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, or the like).

[0099] In some embodiments, the negative electrode tab can include a negative electrode current collector substrate and a negative electrode active material layer disposed on at least one surface of the negative electrode current collector substrate.

[0100] As an example, the negative electrode current collector substrate has two surfaces opposite in the thickness direction thereof, and the negative electrode active material layer is disposed on either one or both of the two opposite surfaces of the negative electrode current collector substrate.

[0101] As an example, the negative active material layer can employ a negative active material layer for the battery cell 41 that is publicly known in the art. As an example, the negative active material layer can include at least one of artificial graphite, natural graphite, soft carbon, hard carbon, a silicon-based material, a tin-based material, and lithium titanate, etc. The silicon-based material can be selected from at least one of elemental silicon, a silicon oxide compound, a silicon-carbon composite, a silicon-nitrogen composite, and a silicon alloy. The tin-based material can be selected from at least one of elemental tin, a tin oxide compound, and a tin alloy. However, the present disclosure is not limited to these materials, and other conventional materials that can be used as a battery negative active material layer can also be used. These negative active material layers can be used alone only one or two or more can be used in combination.

[0102] In some embodiments, the material of the positive current collector substrate can be aluminum, and the material of the negative current collector substrate can be copper.

[0103] In some embodiments, the separator is a separator film. The present disclosure does not have a particular limitation on the type of separator film, and any publicly known porous structure separator film having good chemical stability and mechanical stability can be selected.

[0104] As an example, the main material of the separator film can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic. The separator film can be a single layer film or a multi-layer composite film, and is not particularly limited. When the separator film is a multi-layer composite film, the materials of the respective layers can be the same or different, and are not particularly limited. The separator can be a single component located between the positive electrode sheet and the negative electrode sheet, or can be attached to the surface of the positive electrode sheet and / or the surface of the negative electrode sheet while being located between the positive electrode sheet and the negative electrode sheet.

[0105] In some embodiments, the separator is a solid-state electrolyte. The solid-state electrolyte is provided between the positive electrode sheet and the negative electrode sheet, and functions to transport ions and separate the positive and negative electrodes.

[0106] In some embodiments, the battery cell 41 further includes an electrolyte that functions to conduct ions between the positive and negative electrodes. The present disclosure does not have a particular limitation on the type of electrolyte, and the electrolyte can be selected as needed. The electrolyte can be in a liquid state, a gel state, or a solid state.

[0107] As an example, the liquid electrolyte includes an electrolyte salt and a solvent.

[0108] In some embodiments, the electrolyte salt can be selected from at least one of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium perchlorate, lithium hexafluoroarsenate, lithium bisfluorosulfonylimide, lithium bistrifluoromethylsulfonylimide, lithium trifluoromethanesulfonate, lithium difluorophosphate, lithium difluorobisoxalate borate, lithium bisoxalate borate, lithium difluorodioxalate phosphate, and lithium tetrafluorodioxalate phosphate.

[0109] In some embodiments, the solvent can be selected from at least one of ethylene carbonate, propylene carbonate, methyl ethyl carbonate, diethyl carbonate, dimethyl carbonate, dipropyl carbonate, methyl propyl carbonate, ethyl propyl carbonate, butylene carbonate, fluoroethylene carbonate, methyl formate, methyl acetate, ethyl acetate, propyl acetate, methyl propionate, ethyl propionate, propyl propionate, methyl butyrate, ethyl butyrate, 1,4-butyrolactone, butane sulfone, dimethyl sulfone, methyl ethyl sulfone, and diethyl sulfone. The solvent can also be selected from an ether solvent. The ether solvent can include one or more of ethylene glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, 1,3-dioxolane, tetrahydrofuran, methyl tetrahydrofuran, diphenyl ether, and a crown ether.

[0110] As an example, the gel-state electrolyte includes a polymer as a backbone network of the electrolyte, in combination with an ionic liquid-lithium salt.

[0111] As an example, the solid-state electrolyte includes a polymer solid-state electrolyte, an inorganic solid-state electrolyte, a composite solid-state electrolyte.

[0112] As an example, the polymer solid-state electrolyte can be a polyether (polyethylene oxide), a polysiloxane, a polycarbonate, a polyacrylonitrile, a polyvinylidene fluoride, a polymethyl methacrylate, a single-ion polymer, a polyionic liquid-lithium salt, a cellulose, or the like.

[0113] As an example, the inorganic solid-state electrolyte can be one or more of an oxide solid-state electrolyte (crystalline perovskite, sodium superionic conductor, garnet, amorphous LiPON thin film), a sulfide solid-state electrolyte (crystalline lithium superionic conductor (lithium germanium phosphorous sulfide, argyrodite), amorphous sulfide), and a halide solid-state electrolyte, a nitride solid-state electrolyte, and a hydride solid-state electrolyte.

[0114] As an example, the composite solid-state electrolyte is formed by adding an inorganic solid-state electrolyte filler to a polymer solid-state electrolyte.

[0115] In some embodiments, the shape of the electrode assembly can be flat. The battery cell 41 can correspondingly be a prismatic battery cell, a pouch battery cell, or a battery cell of another shape.

[0116] In some embodiments, the battery cell 41 can further include a case. The case is used to encapsulate components such as the electrode assembly and the electrolyte. The case can be a steel case, an aluminum case, a plastic case (e.g., polypropylene), a composite metal case (e.g., a copper-aluminum composite case), an aluminum-plastic film, or the like.

[0117] As an example, battery cell 41 can be a pouch battery cell or a hard-shell battery cell. A hard-shell battery cell can be a prismatic battery cell, such as a prismatic battery cell, a blade-shaped battery cell, or a multi-prism battery. A multi-prism battery can be, for example, a hexagonal prism battery.

[0118] like Figure 2 As shown, the battery device 40 may further include a power distribution box 44, such as a high-voltage power distribution box. The power distribution box 44 can perform functions such as main charge / discharge circuit switching, current distribution, short-circuit and overload protection within the battery device 40. It can integrate a battery management unit control circuit board, a cell monitoring unit control circuit board, and other components such as fuses and relays. The power distribution box 44 may have a cover, such as a power distribution box cover, which can be equipped with conductive elements that enable electrical connections between the internal structure and external components.

[0119] Figure 3 This is an exploded view of the mounting structure of the first electrical component, intermediate connector, and second electrical component according to some embodiments of the battery device of this disclosure. Figure 4 This is a schematic diagram of the structure of the intermediate connector in some embodiments of the battery device according to the present disclosure. Figure 5 This is a schematic diagram of the intermediate connector in some embodiments of the battery device according to the present disclosure from a side view. Figure 6 yes Figure 5 A schematic diagram of section AA. Figure 7 This is a cross-sectional schematic diagram showing the first connecting terminal and the second connecting terminal respectively inserted into the first insertion port and the second insertion port of the intermediate connector in some embodiments of the battery device according to the present disclosure.

[0120] refer to Figure 3-7 This disclosure provides a battery device 40, including a first electrical component 10, a second electrical component 20, and an intermediate connector 30. The first electrical component 10 has a first connection terminal 11. The second electrical component 20 has a second connection terminal 21. The intermediate connector 30 is used to establish an electrical connection between the first connection terminal 11 and the second connection terminal 21. The intermediate connector 30 includes a housing 31, a first resilient electrical connector 32, and a second resilient electrical connector 33. The housing 31 has an inner cavity 311 and a first insertion port 312 and a second insertion port 313 communicating with the inner cavity 311.

[0121] The first elastic electrical connecting piece 32 is arranged in the inner cavity 311 of the shell 31 and has a first abutting portion 321 abutting against the shell 31 and configured to apply an elastic force to the first connecting terminal 11 inserted into the first insertion opening 312 to make electrical contact with the first connecting terminal 11. The second elastic electrical connecting piece 33 is arranged in the inner cavity 311 of the shell 31 and arranged opposite to the first abutting portion 321 on the inner side of the second insertion opening 313. The second elastic electrical connecting piece 33 is configured to apply an elastic force to the second connecting terminal 21 inserted into the second insertion opening 313 to make the second connecting terminal 21 in electrical contact with the first abutting portion 321, so as to form an electrical connection between the first connecting terminal 11 and the second connecting terminal 21 via the first elastic electrical connecting piece 32.

[0122] The first electrical element 10 and the second electrical element 20 can be electrical elements that need to be electrically connected to each other in the battery device 40, such as relays, protection circuits, control circuit boards, etc. The first connecting terminal 11 of the first electrical element 10 can be a pin, a pin or other conductive structure led out from the first electrical element 10. The first connecting terminal 11 can be integrally made or fixedly connected (such as welding, etc.) with the first electrical element 10. The second connecting terminal 21 of the second electrical element 20 can be a pin, a pin or other conductive structure led out from the second electrical element 20. The second connecting terminal 21 can be integrally made or fixedly connected (such as welding, etc.) with the second electrical element 20.

[0123] The shell of the intermediate connector 30 can be an insulating piece or a conductive piece. The first insertion opening 312 and the second insertion opening 313 in communication with the inner cavity 311 of the shell 31 can be used for inserting the first connecting terminal 11 and the second connecting terminal 21, respectively. The insertion direction of the first connecting terminal 11 relative to the first insertion opening 312 (i.e. Figure 6 The insertion direction of the second connecting terminal 21 relative to the second insertion opening 313 (i.e. Figure 6 The insertion direction of the second connecting terminal 21 relative to the second insertion opening 313 (i.e.

[0124] The first abutting portion 321 of the first elastic electrical connecting piece 32 can be fixedly connected or integrally made with the shell 31. The first elastic electrical connecting piece 32 can be arranged on the inner side of the first insertion opening 312, so as to apply an elastic force to the surface of the first connecting terminal 11 when the first connecting terminal 11 is inserted into the first insertion opening 312, thereby making electrical contact with the first connecting terminal 11 to realize electrical connection through the contact between the first elastic electrical connecting piece 32 and the first connecting terminal 11. When the first connecting terminal 11 presses the first elastic electrical connecting piece 32, the first abutting portion 321 remains in position under the limiting action of the inner cavity 311 of the shell 31.

[0125] The second elastic electrical connecting member 33 can be arranged at the inner side of the second insertion opening 313 and opposite to the first abutting portion 321, and a channel for the second connecting terminal 21 to enter can be formed between the two. When the second connecting terminal 21 is inserted into the second insertion opening 313, the second elastic electrical connecting member 33 can apply an elastic force to the second connecting terminal 21 to make the second connecting terminal 21 electrically contact with the first abutting portion 321, so that the electrical connection is realized through the contact between the first abutting portion 321 and the second connecting terminal 21. Thus, when the first connecting terminal 11 and the second connecting terminal 21 are respectively inserted into the first insertion opening 312 and the second insertion opening 313, the electrical connection is formed between the first connecting terminal 11 and the second connecting terminal 21 at least via the first elastic electrical connecting member 32.

[0126] In the embodiment, the intermediate connector is arranged with the first elastic electrical connecting member 32 and the second elastic electrical connecting member 33 in the housing 31, the first elastic electrical connecting member 32 applies an elastic force to the first connecting terminal 11 inserted into the first insertion opening of the housing 31 to make the first connecting terminal 11 electrically contact, and the second elastic electrical connecting member 33 arranged opposite to the first abutting portion 321 of the first elastic electrical connecting member 32 applies an elastic force to the second connecting terminal 21 inserted into the second insertion opening of the housing 31 to make the second connecting terminal 21 electrically contact with the first abutting portion 321, so that the electrical connection is formed between the first connecting terminal 11 and the second connecting terminal 21 via the first elastic electrical connecting member 32.

[0127] When the second connecting terminal 21 is inserted into the second insertion opening, since the first elastic electrical connecting member 32 has the first abutting portion 321 abutting with the housing 31, the first abutting portion 321 in contact with the second connecting terminal 21 can keep its position without affecting the elastic force between the first elastic electrical connecting member 32 and the first connecting terminal 11, so that the risk that the elastic member in the related art is affected by the thickness of the terminal inserted on one side and causes poor contact of the terminal inserted on the other side is reduced or eliminated, thereby improving the reliability of the battery device.

[0128] Reference Figure 6 And Figure 7 In some embodiments, the insertion direction of the first connecting terminal 11 relative to the first insertion opening 312 is opposite to the insertion direction of the second connecting terminal 21 relative to the second insertion opening 313, and the first connecting terminal 11 and the second connecting terminal 21 are staggered in the inner cavity 311, i.e., the orthographic projection of the first connecting terminal 11 on a reference plane perpendicular to the insertion direction of the first connecting terminal 11 relative to the first insertion opening 312 does not coincide with the orthographic projection of the second connecting terminal 21 on the reference plane.

[0129] The setting position and direction of the first insertion port 312 and the second insertion port 313 can be determined according to the position and extension direction of the first connecting terminal 11 and the second connecting terminal 21. In a more common scenario where the first electrical element 10 and the second electrical element 20 are arranged oppositely and need to be electrically connected by means of the intermediate connector 30, the insertion direction of the first connecting terminal 11 relative to the first insertion port 312 can be opposite to the insertion direction of the second connecting terminal 21 relative to the second insertion port 313, so as to facilitate the insertion of the first connecting terminal 11 and the second connecting terminal 21 relative to the shell 31, which can also improve the scene adaptability of the intermediate connector 30.

[0130] Also, as shown in Figure 7 , the first insertion port 312 and the second insertion port 313 can be staggered in a direction perpendicular to the insertion direction of the first connecting terminal 11 relative to the first insertion port 312, so that when the first connecting terminal 11 and the second connecting terminal 21 are respectively inserted into the first insertion port 312 and the second insertion port 313, the orthographic projection of the first connecting terminal 11 on a reference plane perpendicular to the insertion direction of the first connecting terminal 11 relative to the first insertion port 312 does not coincide with the orthographic projection of the second connecting terminal 21 on the reference plane, so that the first connecting terminal 11 and the second connecting terminal 21 can be staggered in the inner cavity 311, which can facilitate the arrangement of the first abutting portion 321 of the first elastic electrical connecting piece 32 and the second elastic electrical connecting piece 33 in the shell 31, and reduce the possibility of interference between the first elastic electrical connecting piece 32 and the second elastic electrical connecting piece 33, and between the first connecting terminal 11 and the second connecting terminal 21.

[0131] In some embodiments, one of the first electrical element 10 and the second electrical element 20 is a relay, a fuse or a power distribution box cover, and the other of the first electrical element 10 and the second electrical element 20 is a battery management unit control circuit board.

[0132] For the battery device 40, the intermediate connector 30 can be used for electrical connection between electrical elements that need to be electrically connected in a power distribution box 44 with high integration. As shown in Figure 3 and Figure 7 , the first electrical element 10 can be a relay in the power distribution box 44, and the second electrical element 20 can be a battery management unit control circuit board in the power distribution box 44. In another example, the second electrical element 20 can be a fuse or a power distribution box cover in the power distribution box 44, and the first electrical element 10 can be a battery management unit control circuit board in the power distribution box 44.

[0133] In the embodiment, the intermediate connector 30 can realize electrical connection between the relays, fuses or the distribution box cover and the battery management unit control circuit board which need to be electrically connected in the distribution box 44 with high integration, meet the requirement of high integration, save space occupation, and thus facilitate to improve the capacity of the battery device 40.

[0134] With reference to Figure 6 and Figure 7 In some embodiments, the second elastic electrical connecting piece 33 has a second abutting portion 331 abutting against the shell, and the first elastic electrical connecting piece 32 is arranged opposite to the second abutting portion 331 at the inner side of the first insertion opening 312, and the first elastic electrical connecting piece 32 is configured to apply an elastic force to the first connecting terminal 11 inserted into the first insertion opening 312 to make the first connecting terminal 11 electrically contact with the second abutting portion 331, so that the electrical connection is further formed between the first connecting terminal 11 and the second connecting terminal 21 via the second elastic electrical connecting piece 33.

[0135] The second abutting portion 331 of the second elastic electrical connecting piece 33 can be fixedly connected with the shell 31 or integrally made. The first elastic electrical connecting piece 32 can be arranged at the inner side of the first insertion opening 312 and arranged opposite to the second abutting portion 331 to form a channel for the first connecting terminal 11 to enter. When the first connecting terminal 11 is inserted into the first insertion opening 312, the first elastic electrical connecting piece 32 applies an elastic force to the first connecting terminal 11 to make the first connecting terminal 11 electrically contact with the second abutting portion 331, so that the electrical connection is realized through the contact between the second abutting portion 331 and the first connecting terminal 11. When the first connecting terminal 11 and the second connecting terminal 21 are respectively inserted into the first insertion opening 312 and the second insertion opening 313, the electrical connection is formed not only via the first elastic electrical connecting piece 32 between the first connecting terminal 11 and the second connecting terminal 21, but also via the second elastic electrical connecting piece 33.

[0136] In the embodiment, when the first connecting terminal 11 is inserted into the first insertion opening 312, the electrical connection between the first connecting terminal 11 and the second connecting terminal 21 can be realized via both the first elastic electrical connecting piece 32 and the second elastic electrical connecting piece 33, and the first elastic electrical connecting piece 32 and the second elastic electrical connecting piece 33 are equivalent to be connected in parallel between the first connecting terminal 11 and the second connecting terminal 21, so as to reduce the total resistance value between the first connecting terminal 11 and the second connecting terminal 21 and improve the electrical conductivity of the intermediate connector.

[0137] When the first connecting terminal 11 is inserted into the first insertion opening 312, since the second elastic electrical connecting piece 33 has the second abutting portion 331 abutting against the housing 31, the second abutting portion 331 in contact with the first connecting terminal 11 can keep its position without affecting the elastic force between the second elastic electrical connecting piece 33 and the second connecting terminal 21, which further reduces or eliminates the risk that the elastic piece in the related art is affected by the thickness of the one-side inserted terminal to cause poor contact of the other-side inserted terminal, thereby more effectively improving the reliability of the battery device.

[0138] Reference Figure 6 and Figure 7 In some embodiments, the first elastic electrical connecting piece 32 further has a first elastic free end 322 fixedly connected with or integrally formed with the first abutting portion 321, and the first elastic free end 322 is arranged opposite to the second abutting portion 331 inside the first insertion opening 312; the second elastic electrical connecting piece 33 further has a second elastic free end 332 fixedly connected with or integrally formed with the second abutting portion 331, and the second elastic free end 332 is arranged opposite to the first abutting portion 321 inside the second insertion opening 313.

[0139] The first elastic free end 322 of the first elastic electrical connecting piece 32 can be in the form of a spring piece or other forms, which can be in contact with the inserted first connecting terminal 11 and deformed under the extrusion of the first connecting terminal 11, thereby forming the extrusion force on the first connecting terminal 11. The first elastic free end 322 is arranged opposite to the second abutting portion 331 inside the first insertion opening 312, so that when the first connecting terminal 11 is inserted into the first insertion opening 312, the two ends thereof in the direction perpendicular to the insertion direction are in contact with the first elastic free end 322 and the second abutting portion 331 respectively, and are pressed tightly by the first elastic free end 322 and the second abutting portion 331 under the elastic action of the first elastic free end 322, so as to obtain good electrical contact.

[0140] The second elastic free end 332 of the second elastic electrical connecting piece 33 can be in the form of a spring piece or other forms, which can be in contact with the inserted second connecting terminal 21 and deformed under the extrusion of the second connecting terminal 21, thereby forming the extrusion force on the second connecting terminal 21. The second elastic free end 332 is arranged opposite to the first abutting portion 321 inside the second insertion opening 313, so that when the second connecting terminal 21 is inserted into the second insertion opening 313, the two ends thereof in the direction perpendicular to the insertion direction are in contact with the second elastic free end 332 and the first abutting portion 321 respectively, and are pressed tightly by the second elastic free end 332 and the first abutting portion 321 under the elastic action of the second elastic free end 332, so as to obtain good electrical contact.

[0141] ReferenceFigure 6 In some embodiments, the first elastic free end 322 is bent relative to the first abutting portion 321 and forms a V-shaped structure with the first abutting portion 321; and / or the second elastic free end 332 is bent relative to the second abutting portion 331 and forms a V-shaped structure with the second abutting portion 331.

[0142] The first elastic free end 322 can be integrally formed with the first abutting portion 321 by bending the first elastic electric connecting piece 32 to form the arc-shaped elastic region of the first elastic free end 322 and the first abutting portion 321. Here, the bottom of the V-shaped structure can be arc-shaped as shown in FIG. 6A, or can be in the shape of a broken line. Figure 6 The bending structure can provide a stable elastic force for the first elastic free end 322 to the first connecting terminal 11 so as to press the second abutting portion 331 tightly.

[0143] The second elastic free end 332 can be integrally formed with the second abutting portion 331 by bending the second elastic electric connecting piece 33 to form the arc-shaped elastic region of the second elastic free end 332 and the first abutting portion 321. Here, the bottom of the V-shaped structure can be arc-shaped as shown in FIG. 6B, or can be in the shape of a broken line. Figure 6 The bending structure can provide a stable elastic force for the second elastic free end 332 to the second connecting terminal 21 so as to press the first abutting portion 321 tightly.

[0144] Reference Figure 4 and Figure 6 In some embodiments, the shell 31 is an electrically conductive member, and the first abutting portion 321 and the second abutting portion 331 are electrically connected with the shell or integrally formed with the shell, so as to further form an electrical connection between the first connecting terminal 11 and the second connecting terminal 21 via the shell 31.

[0145] The first abutting portion 321 and the second abutting portion 331 can be electrically connected with the shell 31, or can be integrally formed with the shell 31. In terms of material, the shell 31 can be made of an electrically conductive material (for example, copper, silver, copper alloy, etc. with excellent electrical conductivity). For example, the shell 31 can be made of the same copper alloy electrically conductive material as the first elastic electric connecting piece 32 and the second elastic electric connecting piece 33, so as to be integrally formed by an integral molding process.

[0146] In the present embodiment, the use of the electrically conductive member as the shell 31 can further form an electrical connection between the first connecting terminal 11 and the second connecting terminal 21 via the shell 31, which is conducive to further reducing the resistance of the intermediate connector 30, improving the electrical conductivity, and reducing the manufacturing difficulty through an integral molding process, which is conducive to improving the production efficiency.

[0147] Figure 8is a schematic view of the structure of the second connection terminal in some embodiments of the battery device according to the present disclosure.

[0148] Referring to Figure 7 and Figure 8 In some embodiments, a first locking structure sk1 is provided between the first connection terminal 11 and the second abutting portion 331, and the first locking structure sk1 is configured to lock the relative position between the first connection terminal 11 and the second abutting portion 331 when the first connection terminal 11 is inserted to a preset depth of the first insertion opening 312; and / or a second locking structure sk2 is provided between the second connection terminal 21 and the first abutting portion 321, and the second locking structure sk2 is configured to lock the relative position between the second connection terminal 21 and the first abutting portion 321 when the second connection terminal 21 is inserted to a preset depth of the second insertion opening 313.

[0149] The first locking structure sk1 can be various forms of locking structures, such as a recess and protrusion embedded fitting structure, a snap fitting structure of a hook and a groove, etc. As shown in Figure 7 and Figure 8 The first locking structure sk1 can include a first protrusion 111 provided on the first connection terminal 11 and a first recess 333 on the second abutting portion 331, and the first protrusion 111 cooperates with the first recess 333 to form an embedded fitting structure. The first protrusion 111 can be in a semi-cylindrical or semi-spherical shape to facilitate the first protrusion 111 entering the first recess 333.

[0150] The second locking structure sk2 can be various forms of locking structures, such as a recess and protrusion embedded fitting structure, a snap fitting structure of a hook and a groove, etc. As shown in Figure 7 and Figure 8 The second locking structure sk2 can include a second protrusion 211 provided on the second connection terminal 21 and a second recess 323 on the first abutting portion 321, and the second protrusion 211 cooperates with the second recess 323 to form an embedded fitting structure. The second protrusion 211 can be in a semi-cylindrical or semi-spherical shape to facilitate the second protrusion 211 entering the second recess 323.

[0151] The position of the first locking structure sk1 can be determined according to the suitable depth of the first connection terminal 11 inserted into the first insertion opening 312. In this way, when the first connection terminal 11 is inserted to the preset depth of the first insertion opening 312, the first locking structure sk1 can lock the relative position between the first connection terminal 11 and the second abutting portion 331, so that it is not easy to be loosened, which can reduce or eliminate the fixing structure between the intermediate connector 30 and the first electrical element 10 or the second electrical element 20 outside, thereby simplifying the design.

[0152] The setting position of the second locking structure sk2 can be determined according to the suitable depth of the second connection terminal 21 inserted into the second insertion port 313. In this way, when the second connection terminal 21 is inserted into the second insertion port 313 to a preset depth, the second locking structure sk2 can lock the relative position between the second connection terminal 21 and the first abutting portion 321, so that it is not easy to be loosened, which can reduce or eliminate the fixing structure between the intermediate connector 30 and the first electrical element 10 or the second electrical element 20 outside, thereby simplifying the design.

[0153] Reference Figure 7 and Figure 8 In some embodiments, at least one of the first connection terminal 11 and the second connection terminal 21 located outside the housing 31 is provided with a flexible portion 212 configured to provide a floating amount for absorbing assembly tolerance.

[0154] In Figure 7 , the second connection terminal 21 can be inserted on the circuit board and welded, and the exposed portion adjacent to the side of the intermediate connector 30 can be inserted into the second insertion port 313. The flexible portion 212 is located at this exposed portion, and when there is a certain assembly tolerance between the first electrical element 10, the intermediate connector 30 and the second electrical element 20, the flexible portion 212 can be deformed to adapt. For example, when the assembly position of the second electrical element 20 and the intermediate connector 30 is slightly far, the flexible portion 212 can be elastically elongated to adapt to the assembly position. Conversely, when the assembly position of the second electrical element 20 and the intermediate connector 30 is slightly close, the flexible portion 212 can be elastically shortened to adapt to the assembly position.

[0155] The flexible portion 212 can be provided on the second connection terminal 21 as Figure 7 indicated, or can be provided on the first connection terminal 11, or both the first connection terminal 11 and the second connection terminal 21.

[0156] In the present embodiment, by providing the flexible portion 212 on at least one of the first connection terminal 11 and the second connection terminal 21 located outside the housing 31, the assembly tolerance can be absorbed by the deformation and floating of the flexible portion 212, thereby reducing the requirement for assembly accuracy and facilitating the reduction of manufacturing difficulty and cost.

[0157] Reference Figure 8 In some embodiments, the flexible portion 212 includes a circular arc structure.

[0158] The cross section of the circular arc structure can be in the shape of a circular arc, which can be deformed to increase the curvature when being pressed, and can be deformed to decrease the curvature when being stretched.

[0159] In the embodiment, the flexible part 212 adopts a circular arch structure to provide floating amount, which is more convenient to realize in structure.

[0160] In one aspect of the present disclosure, a battery device 40 of any of the preceding embodiments is provided for an electrical equipment.

[0161] The electrical equipment adopting the battery device of the preceding embodiments of the present disclosure has better reliability.

[0162] In one aspect of the present disclosure, an intermediate connector 30 is provided for establishing an electrical connection between a first connecting terminal 11 of a first electrical element 10 and a second connecting terminal 21 of a second electrical element 20. The intermediate connector 30 comprises a housing 31, a first elastic electrical connecting member 32 and a second elastic electrical connecting member 33. The housing 31 has an inner cavity 311, and a first insertion opening 312 and a second insertion opening 313 communicating with the inner cavity 311.

[0163] The first elastic electrical connecting member 32 is arranged in the inner cavity 311 and has a first abutting portion 321 abutting against the housing 31, and is configured to apply an elastic force to the first connecting terminal 11 inserted into the first insertion opening 312 to make electrical contact with the first connecting terminal 11. The second elastic electrical connecting member 33 is arranged in the inner cavity 311 and is arranged opposite to the first abutting portion 321 inside the second insertion opening 313, and is configured to apply an elastic force to the second connecting terminal 21 inserted into the second insertion opening 313 to make electrical contact between the second connecting terminal 21 and the first abutting portion 321, so as to form an electrical connection between the first connecting terminal 11 and the second connecting terminal 21 via the first elastic electrical connecting member 32.

[0164] In the embodiment, the intermediate connector is arranged with the first elastic electrical connecting member 32 and the second elastic electrical connecting member 33 in the housing 31, and the first elastic electrical connecting member 32 applies an elastic force to the first connecting terminal 11 inserted into the first insertion opening of the housing 31 to make electrical contact with the first connecting terminal 11, and the second elastic electrical connecting member 33 arranged opposite to the first abutting portion 321 of the first elastic electrical connecting member 32 applies an elastic force to the second connecting terminal 21 inserted into the second insertion opening of the housing 31 to make electrical contact between the second connecting terminal 21 and the first abutting portion 321, so as to form an electrical connection between the first connecting terminal 11 and the second connecting terminal 21 via the first elastic electrical connecting member 32.

[0165] When the second connection terminal 21 is inserted into the second insertion opening, since the first elastic electrical connecting piece 32 has the first abutting portion 321 abutting against the housing 31, the first abutting portion 321 in contact with the second connection terminal 21 can keep its position without affecting the elastic force between the first elastic electrical connecting piece 32 and the first connection terminal 11, so that the risk of poor contact of the other inserted terminal due to the thickness of the one inserted terminal affecting the elastic piece in the related art is reduced or eliminated, thereby improving the reliability of the battery device.

[0166] Reference will now be made to Figure 3-8 An embodiment of the battery device 40 will be described.

[0167] The battery device 40 includes a first electrical element 10 having a first connection terminal 11, a second electrical element 20 having a second connection terminal 21, and an intermediate connector 30. The intermediate connector 30 is configured to establish an electrical connection between the first connection terminal 11 and the second connection terminal 21. The first electrical element 10 is a relay, and the second electrical element 20 is a battery management unit control circuit board.

[0168] The intermediate connector 30 includes a housing 31, a first elastic electrical connecting piece 32, and a second elastic electrical connecting piece 33. The housing 31 has an inner cavity 311, and a first insertion opening 312 and a second insertion opening 313 communicating with the inner cavity 311. The first connection terminal 11 is inserted into the first insertion opening 312 in a direction opposite to that of the second connection terminal 21 inserted into the second insertion opening 313, and the first connection terminal 11 and the second connection terminal 21 are staggered in the inner cavity 311.

[0169] The first elastic electrical connecting piece 32 is arranged in the inner cavity 311 and has a first abutting portion 321 abutting against the housing. The second elastic electrical connecting piece 33 is arranged in the inner cavity 311 and is arranged opposite to the first abutting portion 321 inside the second insertion opening 313. The second elastic electrical connecting piece 33 has a second abutting portion 331 abutting against the housing, and the first elastic electrical connecting piece 32 is arranged opposite to the second abutting portion 331 inside the first insertion opening 312. The housing 31 is an electrically conductive member, and the first abutting portion 321 and the second abutting portion 331 are integrally formed with the housing.

[0170] The first elastic electrical connecting piece 32 is configured to apply an elastic force to the first connecting terminal 11 inserted into the first insertion port 312, so as to make electrical contact with the second abutting part 331 together with the first connecting terminal 11. The second elastic electrical connecting piece 33 is configured to apply an elastic force to the second connecting terminal 21 inserted into the second insertion port 313, so as to make electrical contact with the first abutting part 321 together with the second connecting terminal 21. In this way, the electrical connection is formed between the first connecting terminal 11 and the second connecting terminal 21 via the first elastic electrical connecting piece 32, the second elastic electrical connecting piece 33 and the shell 31 in parallel.

[0171] The first elastic electrical connecting piece 32 further has a first elastic free end 322 integrally made with the first abutting part 321, which is bent relative to the first abutting part 321 and forms a V shape with the first abutting part 321, and which is arranged opposite to the second abutting part 331 inside the first insertion port 312.

[0172] The second elastic electrical connecting piece 33 further has a second elastic free end 332 fixedly connected or integrally made with the second abutting part 331, which is bent relative to the second abutting part 331 and forms a V shape with the second abutting part 331, and which is arranged opposite to the first abutting part 321 inside the second insertion port 313.

[0173] The first connecting terminal 11 and the second abutting part 331 are provided with a first locking structure sk1, which is configured to lock the relative position between the first connecting terminal 11 and the second abutting part 331 when the first connecting terminal 11 is inserted into the first insertion port 312 to a preset depth. The second connecting terminal 21 and the first abutting part 321 are provided with a second locking structure sk2, which is configured to lock the relative position between the second connecting terminal 21 and the first abutting part 321 when the second connecting terminal 21 is inserted into the second insertion port 313 to a preset depth.

[0174] The part of the second connecting terminal 21 located outside the shell 31 is provided with a flexible part 212, which is configured to provide a floating amount for absorbing assembly tolerance. The flexible part 212 includes a circular arch structure.

[0175] So far, the embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.

[0176] While some specific embodiments of the present disclosure have been described in detail by way of example with reference to the drawings, it is to be understood that the above examples are merely illustrative of the present disclosure and are not intended to limit the scope of the present disclosure. It is to be understood that modifications or equivalent arrangements of the above embodiments can be made by those skilled in the art without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A battery device (40) characterized by, Comprising: a first electrical element (10) having a first connection terminal (11); a second electrical element (20) having a second connection terminal (21); and an intermediate connector (30) for establishing an electrical connection between the first connection terminal (11) and the second connection terminal (21); wherein the intermediate connector (30) comprises: a housing (31) having an inner cavity (311) and a first insertion opening (312) and a second insertion opening (313) communicating with the inner cavity (311); a first elastic electrical connecting member (32) disposed in the inner cavity (311) and having a first abutting portion (321) abutting against the housing, configured to apply an elastic force to the first connection terminal (11) inserted into the first insertion opening (312) to make electrical contact with the first connection terminal (11); and a second elastic electrical connecting member (33) disposed in the inner cavity (311) and opposite to the first abutting portion (321) inside the second insertion opening (313), the second elastic electrical connecting member (33) being configured to apply an elastic force to the second connection terminal (21) inserted into the second insertion opening (313) to make electrical contact between the second connection terminal (21) and the first abutting portion (321), thereby forming an electrical connection between the first connection terminal (11) and the second connection terminal (21) via the first elastic electrical connecting member (32); the insertion direction of the first connection terminal (11) relative to the first insertion opening (312) is opposite to the insertion direction of the second connection terminal (21) relative to the second insertion opening (313), and the orthographic projection of the first connection terminal (11) on a reference plane perpendicular to the insertion direction of the first connection terminal (11) relative to the first insertion opening (312) does not coincide with the orthographic projection of the second connection terminal (21) on the reference plane. The second elastic electrical connecting member (33) has a second abutting portion (331) abutting against the housing, and the first elastic electrical connecting member (32) is disposed opposite to the second abutting portion (331) inside the first insertion opening (312), the first elastic electrical connecting member (32) being configured to apply an elastic force to the first connection terminal (11) inserted into the first insertion opening (312) to make electrical contact between the first connection terminal (11) and the second abutting portion (331), thereby forming an electrical connection between the first connection terminal (11) and the second connection terminal (21) via the second elastic electrical connecting member (33) as well.

2. The battery arrangement (40) according to claim 1, characterized in that ​ 3. The battery arrangement (40) according to claim 2, characterized in that The first elastic electrical connecting piece (32) further has a first elastic free end (322) fixedly connected with or integrally formed with the first abutting portion (321), and the first elastic free end (322) is arranged opposite to the second abutting portion (331) inside the first insertion opening (312); the second elastic electrical connecting piece (33) further has a second elastic free end (332) fixedly connected with or integrally formed with the second abutting portion (331), and the second elastic free end (332) is arranged opposite to the first abutting portion (321) inside the second insertion opening (313).

4. The battery device (40) according to claim 3, characterized in that The first elastic free end (322) is bent relative to the first abutting portion (321) and forms a V-shaped structure with the first abutting portion (321); and / or The second elastic free end (332) is bent relative to the second abutting portion (331) and forms a V-shaped structure with the second abutting portion (331).

5. The battery device (40) according to claim 2, characterized in that A first locking structure (sk1) is arranged between the first connecting terminal (11) and the second abutting portion (331), and the first locking structure (sk1) is configured to lock the relative position between the first connecting terminal (11) and the second abutting portion (331) when the first connecting terminal (11) is inserted to a preset depth of the first insertion opening (312); and / or A second locking structure (sk2) is arranged between the second connecting terminal (21) and the first abutting portion (321), and the second locking structure (sk2) is configured to lock the relative position between the second connecting terminal (21) and the first abutting portion (321) when the second connecting terminal (21) is inserted to a preset depth of the second insertion opening (313).

6. The battery device (40) according to claim 2, characterized in that The shell (31) is a conductive member, and the first abutting portion (321) and the second abutting portion (331) are electrically connected with or integrally formed with the shell (31) to form an electrical connection between the first connecting terminal (11) and the second connecting terminal (21) via the shell (31).

7. The battery device (40) according to claim 1, characterized in that At least one of the first connecting terminal (11) and the second connecting terminal (21) is provided with a flexible portion (212) configured to provide a floating amount for absorbing assembly tolerance.

8. The battery arrangement (40) according to claim 7, characterized in that The flexible portion (212) comprises a circular arch structure.

9. The battery device (40) according to claim 1, characterized in that One of the first electrical element (10) and the second electrical element (20) is a relay, a fuse or a distribution box cover, and the other of the first electrical element (10) and the second electrical element (20) is a battery management unit control circuit board.

10. An electric device, characterized by The battery device (40) according to any one of claims 1-9. The intermediate connector (30) comprises:

11. An intermediate connector (30) for establishing an electrical connection between a first connection terminal (11) of a first electrical element (10) and a second connection terminal (21) of a second electrical element (20), characterized in that a shell (31) having an inner cavity (311) and a first insertion opening (312) and a second insertion opening (313) communicating with the inner cavity (311); ​ A first elastic electric connecting member (32) is arranged in the inner cavity (311) and has a first abutting portion (321) abutting against the shell, and is configured to apply an elastic force to a first connecting terminal (11) inserted into the first insertion opening (312) to make electrical contact with the first connecting terminal (11); and A second elastic electric connecting member (33) is arranged in the inner cavity (311) and is arranged opposite to the first abutting portion (321) inside the second insertion opening (313), and is configured to apply an elastic force to a second connecting terminal (21) inserted into the second insertion opening (313) to make electrical contact between the second connecting terminal (21) and the first abutting portion (321), so as to form an electrical connection between the first connecting terminal (11) and the second connecting terminal (21) via the first elastic electric connecting member (32); the insertion direction of the first connecting terminal (11) relative to the first insertion opening (312) is opposite to the insertion direction of the second connecting terminal (21) relative to the second insertion opening (313), and the orthogonal projection of the first connecting terminal (11) on a reference plane perpendicular to the insertion direction of the first connecting terminal (11) relative to the first insertion opening (312) does not coincide with the orthogonal projection of the second connecting terminal (21) on the reference plane.

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