Battery devices, electric control components and electric equipment

Abstract

The present application relates to the field of battery technology, and in particular to battery devices, electrical control components, and electrical equipment. In an embodiment of the present application, by providing a conductive member electrically connecting the electrical control body and the connector, and making at least part of the conductive member configured to be deformable, it is possible not only to reduce damage to the connector during installation of the connector in the box, but also to absorb and buffer external forces when the battery device is in use, thereby protecting the connector. Therefore, the stress condition of the connector can be improved as a whole, thereby improving the reliability of the electrical connection between the connector and the external device, and further improving the reliability of the electrical connection between the battery device and the external device.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to battery devices, electric control components and electric equipment. Background Art

[0002] As the core component of electric vehicles, the high-voltage connection of power batteries is particularly important. An electrical control unit is usually set in the battery device, which is mainly used to manage the electrical energy in the battery device. The electrical control unit is usually equipped with a connector for electrical connection to external devices. The reliability of the connector will directly affect the reliability of the electrical connection between the battery device and the external device. Summary of the invention

[0003] Based on this, the present application provides a battery device, an electrical control component and an electrical equipment, which can improve the reliability of the electrical connection between the battery device and an external device.

[0004] In the first aspect, the present application provides a battery device, which includes: a battery cell and a casing, wherein the battery cell is disposed in the casing; and an electrical control component, wherein the electrical control component includes: an electrical control body, disposed in the casing and electrically connected to the battery cell; a connector, which passes through the casing; the connector has a first end located in the casing, and a second end exposed outside the casing; and a conductive component, which is electrically connected between the electrical control body and the first end; at least a portion of the conductive component is configured to be capable of deformation.

[0005] In the technical solution of the embodiment of the present application, by providing a conductive member electrically connecting the electric control body and the connector, and making at least part of the conductive member configured to be deformable, not only can the damage to the connector be reduced during the installation of the connector in the box, but also the external force can be absorbed and buffered during the use of the battery device, thereby protecting the connector. Therefore, the stress condition of the connector can be improved as a whole, thereby improving the reliability of the electrical connection between the connector and the external device, and further improving the reliability of the electrical connection between the battery device and the external device.

[0006] In some embodiments, the conductive member includes: a first part, electrically connected to the electrical control body; a second part, electrically connected to the first end; and a third part, electrically connected between the first part and the second part; wherein, among the first part, the second part and the third part, at least the third part is configured to be able to produce deformation.

[0007] In this way, since at least the third part can be deformed, on the one hand, when the conductive part is subjected to external force, the third part can absorb and disperse the external force through its own deformation, which can not only reduce the loose connection caused by external force, but also improve the direct transmission of force to the first part and the second part, reducing the impact on the electrical connection; on the other hand, it is also convenient for the maintenance and replacement of the electrical control body and the connector.

[0008] In some embodiments, the electrical control body includes: a shell having a port electrically connected to a battery cell; and an electrical control module disposed in the shell and electrically connected to the port and the first part, respectively; wherein the first part is located in the shell and connected to the shell, the second part is located outside the shell, and at least part of the third part is located outside the shell.

[0009] In this way, since at least part of the third part is located outside the shell, not only can the larger space outside the shell be used to produce deformation, which is conducive to more flexible connection of the connector to the box body, and the space inside the shell can be made more compact, it is also conducive to forming a relatively closed environment inside the shell, thereby improving the reliability of related components inside the shell.

[0010] In some embodiments, along the direction from the first portion to the second portion, the maximum dimension of a portion of the third portion located outside the shell is greater than or equal to 5 mm and less than or equal to 20 mm.

[0011] In this way, not only the stability and reliability of the third part of the conductive member outside the shell can be enhanced, but also the space outside the shell can be used more efficiently.

[0012] In some embodiments, at least one of the first portion and the second portion includes a deformation segment, the deformation segment is configured to be able to generate deformation; the deformation capacity of the deformation segment is smaller than the deformation capacity of the third portion.

[0013] In this way, when subjected to external force, the conductive member can more easily absorb, buffer and disperse the external force through the deformation of the third part, thereby protecting the first part and the second part. At the same time, when at least one of the first part and the second part includes a deformation section, when the deformable part is subjected to external force, the force can also be absorbed, buffered and dispersed, thereby further improving the reliability and stability of the connection.

[0014] In some embodiments, the conductive member includes a plurality of conductive layers stacked together; portions of the plurality of conductive layers located in the first portion are fixedly connected, and portions of the plurality of conductive layers located in the second portion are fixedly connected.

[0015] In this way, not only can the mechanical strength and flexibility of the conductive part be enhanced, thereby facilitating the deformation of the third part under the action of external force, but also the reliability of the connection between the first part and the electrical control body and the reliability of the connection between the second part and the connector can be improved.

[0016] In some embodiments, portions of the plurality of conductive layers located at the first portion are connected by welding; and / or portions of the plurality of conductive layers located at the second portion are connected by welding.

[0017] This not only enhances the strength and reliability of the connection, but also helps reduce contact resistance.

[0018] In some embodiments, the material of the multiple conductive layers includes at least one of copper and aluminum.

[0019] Since copper has a relatively high tensile strength and can withstand a certain degree of stretching and bending without breaking easily, aluminum has good flexibility, that is, both copper and aluminum have certain mechanical strength and toughness, which can improve the situation where the conductive parts are damaged due to deformation of the third part.

[0020] In some embodiments, the conductive member further includes a protective layer; a plurality of conductive layers constitute a conductive layer group; and along a stacking direction of the plurality of conductive layers, at least one side of the conductive layer group is provided with a protective layer.

[0021] In this way, the protective layer can be used to provide electrical and structural protection to the conductive layer group, thereby improving the reliability of the conductive component.

[0022] In some embodiments, the material of the protective layer includes at least one of nickel, gold, silver, and tin.

[0023] Thus, since nickel, gold, silver and tin have certain passivation ability, hardness and stability, they are beneficial to protecting the conductive layer group.

[0024] In some embodiments, the third portion has a first connection end connected to the first portion, and a second connection end connected to the second portion; wherein the third portion extends in a non-linear shape from the first connection end to the second connection end.

[0025] In this way, not only can the third part absorb, disperse and buffer the force through its own deformation such as bending and twisting, but also the distribution of the force can be more uniform through the change of the shape of the third part, thereby improving the fatigue resistance. At the same time, the non-linear third part can also better adapt to the spatial layout inside the battery device, making it easier to install and maintain.

[0026] In some embodiments, the third portion is disposed to protrude relative to the first portion and the second portion; and / or, the third portion is disposed to extend in a curved manner from the first connection end to the second connection end.

[0027] In the case where the third part is protruding relative to the first part and the second part, not only can the protruding third part provide more space for the connection operation when the first part and the second part of the conductive member are respectively connected to the relevant parts, such as welding, riveting or fixing with bolts and nuts, but also when the conductive member is subjected to external forces, the elastic deformation generated by the third part can reduce the load borne by the first part and the second part, thereby reducing the risk of deformation, fracture and other damage to the conductive member, improving the structural stability and reliability of the conductive member, and extending its service life. In the case where the third part is bent and extended from the first connection end to the second connection end, not only can the third part better disperse stress when facing external forces, improve the stability and reliability of the overall structure, but also facilitate more flexible use of space.

[0028] In some embodiments, along the thickness direction of the conductive element, the thickness of the first portion and the thickness of the second portion are both greater than the thickness of the third portion; the thickness direction of the conductive element and the direction from the first portion to the second portion are perpendicular to each other.

[0029] In this way, since the first part and the second part are thicker than the third part, not only the contact resistance can be reduced, but also the connection stability and the ability to resist external forces can be enhanced. Furthermore, since the third part is thinner than the first part and the second part, the third part is weaker than the first part and the second part. When the conductive part is subjected to an external force, the external force is more easily transmitted or acts on the third part, thereby utilizing the elastic deformation generated by the third part to absorb, disperse and buffer the external force.

[0030] In some embodiments, the first portion, the second portion, and the third portion are an integrally formed structure.

[0031] In this way, it is not only easy to manufacture the conductive part, but also enables the conductive part to have certain strength, rigidity and fatigue resistance.

[0032] In some embodiments, the shell includes a shell body and a mounting portion disposed in the shell body; the mounting portion is connected to the shell body; at least part of the first portion is covered by the mounting portion and is connected to the mounting portion.

[0033] In this way, by providing the mounting portion, not only is it easy to install the first part, but also because at least part of the first part is covered on the mounting portion, the contact area of ​​the connection can be increased, thereby making the connection between the first part and the mounting portion more secure.

[0034] In some embodiments, the first portion is integrally connected to the mounting portion.

[0035] Thus, the integrated connection method allows the first part and the mounting part to form a continuous integral structure, eliminating the connection gap that may exist in traditional connection methods (such as bolt connection, snap connection, etc.). This seamless structure can not only better withstand external forces, but also improve the situation where the first part and the mounting part are relatively displaced due to loose connection. In addition, the integrated connection method is also easy to process and manufacture.

[0036] In some embodiments, the first portion is connected to the mounting portion by injection molding.

[0037] In this way, connecting by injection molding not only helps to form a seamless connection structure, but also can improve the connection firmness between the first part and the mounting part.

[0038] In some embodiments, the shell body includes a first wall; along the direction from the mounting portion to the second end, the first wall is located between the mounting portion and the second end; the mounting portion is connected to a side of the first wall facing away from the second end.

[0039] This helps to shorten the length of the conductive part within the shell body, which not only helps to improve the space utilization inside the shell body and facilitates the connection between the first part and the mounting part, but also reduces the swing amplitude of the conductive part when subjected to external force, thereby reducing the risk of damage to the first and second parts of the conductive part.

[0040] In some embodiments, the electrical control component further includes a first fastener, by means of which the conductive member is fixedly connected to the electrical control body; and / or, the electrical control component further includes a second fastener, by means of which the conductive member is fixedly connected to the first end.

[0041] Thus, by providing the first fastener, not only can the conductive member be tightly connected to the electrical control body and the ability to resist external forces be improved, but also maintenance is facilitated. By providing the second fastener, not only can the conductive member be tightly connected to the first end of the connector and the ability to resist external forces be improved, but also maintenance is facilitated.

[0042] In some embodiments, the conductive member is configured as a flexible member; and / or, the conductive member is configured as a sheet member; and / or, a pin is provided at the second end of the connector; and / or, the electrical control member is configured as a high-voltage distribution box.

[0043] When the conductive part is configured as a flexible part, not only can the conductive part absorb and disperse the external forces through its own deformation when it is subjected to external forces, but also the conductive part has certain anti-fatigue performance and is easy to install. When the conductive part is configured as a sheet-like part, it is conducive to the deformation of the conductive part and the reduction of the space occupied. When a pin is provided at the second end of the connector, the pin can be inserted into the corresponding hole, and a tight connection is achieved through friction and mechanical bite. This connection method can withstand a certain degree of vibration, pulling and other mechanical external forces, and is not easy to loosen; at the same time, when the second end is electrically connected to an external device, the connection accuracy during docking can be improved by means of the matching form of the pin and the hole. The overall structure is simple and convenient for plugging. When the electrical control part is configured as a high-voltage distribution box, the high-voltage distribution box has the function of high-voltage power distribution and can achieve good power distribution management.

[0044] In the second aspect, the present application provides an electrical control component for a battery device, the battery device comprising a battery cell and a box, the battery cell being arranged in the box, the electrical control component comprising: an electrical control body, arranged in the box and electrically connected to the battery cell; a connector, arranged through the box; the connector having a first end located in the box, and a second end exposed outside the box; and a conductive member, electrically connected between the electrical control body and the first end; at least a portion of the conductive member is configured to be able to produce deformation.

[0045] By providing a conductive member electrically connecting the electric control body and the connector, and making at least part of the conductive member configured to be deformable, not only can the damage to the connector be reduced during the process of installing the connector in the box, but also the external force can be absorbed and buffered during the use of the battery device, thereby protecting the connector. Therefore, the stress condition of the connector can be improved as a whole, thereby improving the reliability of the electrical connection between the connector and the external device, and further improving the reliability of the electrical connection between the battery device and the external device.

[0046] In a third aspect, the present application provides an electrical device, comprising the battery device in any of the above embodiments; or, comprising the electrical control component in any of the above embodiments.

[0047] In the case where the electric equipment includes the battery device in any of the above embodiments, the advantages possessed by the battery device in any of the above embodiments are also possessed by the electric equipment, which will not be described in detail here. In the case where the electric equipment includes the electric control component in any of the above embodiments, the advantages possessed by the electric control component in any of the above embodiments are also possessed by the electric equipment, which will not be described in detail here.

[0048] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the embodiments below. The accompanying drawings are only for the purpose of illustrating the embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0050] Figure 1 A schematic diagram of the structure of a vehicle in some embodiments of the present application;

[0051] Figure 2 is a schematic diagram of the exploded structure of a battery device in some embodiments of the present application;

[0052] Figure 3 A schematic diagram of the exploded structure of a battery cell in some embodiments of the present application;

[0053] Figure 4 A schematic diagram of a three-dimensional structure of a partial structure of a battery device in some embodiments of the present application;

[0054] Figure 5 Schematic diagram of the three-dimensional structure of the electric control component in some embodiments of the present application;

[0055] Figure 6 for Figure 4 A schematic diagram of the local enlarged structure at point A in the middle;

[0056] Figure 7 for Figure 6 A structural schematic diagram in which a part of the structure of the electric control components is removed;

[0057] Figure 8 It is a partial enlarged structural schematic diagram of the partial structure of the matching between the box body and the electric control component in some embodiments of the present application;

[0058] Fig. 9 A schematic diagram of a three-dimensional structure of a battery device in some embodiments of the present application with part of the structure removed;

[0059] Fig.10 for Fig. 9 A schematic diagram of the local enlarged structure at B in the middle;

[0060] Fig.11 It is a schematic cross-sectional structural diagram of a partial structure of the conductive member in some embodiments of the present application cooperating with related components in the battery device;

[0061] Fig.12 It is a schematic diagram of the structure of the conductive member in some embodiments of the present application;

[0062] Fig.13 It is a schematic diagram of the structure of the conductive member in some other embodiments of the present application;

[0063] Fig.14 Schematic diagram of the structure of the conductive member in some other embodiments of the present application;

[0064] Fig.15 Schematic diagram of the structure of the conductive member in some other embodiments of the present application;

[0065] Fig.16 Schematic diagram of the structure of the conductive member in some embodiments of the present application.

[0066] Description of reference numerals:

[0067] Vehicle 1;

[0068] Battery device 10, controller 20, motor 30;

[0069] Battery cell 100, housing 110, end cap 120, electrode assembly 130, electrode terminal et;

[0070] Box body 200, first box body part 210, second box body part 220, first accommodating chamber Q1;

[0071] Electric control component 300, electric control body 310, shell 311, shell body 311a, first wall b1, mounting portion 311b, second accommodating cavity Q2, electric control module 312, connector 320, first end e1, second end e2, conductive component 330, first part P1, second part P2, third part P3, first connection end u1, second connection end u2, conductive layer 331, protective layer 332, first fastener 340, connector 350, second fastener 360, mounting component 370;

[0072] A first thickness h1, a second thickness h2, a third thickness h3, and a first length d1;

[0073] The first direction F1, the second direction F2, and the third direction F3. DETAILED DESCRIPTION

[0074] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0075] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0076] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0077] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0078] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0079] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0080] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0081] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0082] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0083] An electrical control unit is usually provided in a battery device. The electrical control unit is mainly used to manage the high-voltage power distribution in the battery device and can protect the battery from overcurrent, overvoltage, short circuit and other faults. A connector for electrical connection to external devices is usually provided on the electrical control unit. The reliability of the connector directly affects the reliability of the electrical connection between the battery device and the external device.

[0084] Based on this, in order to improve the reliability of the electrical connection between the battery device and the external device, the embodiment of the present application provides a battery device, which improves the reliability of the electrical connection between the connector and the external device by changing the connection mode of the connector, thereby improving the reliability of the electrical connection between the battery device and the external device. Specifically, by arranging the connector on the box of the battery device and arranging a structure that can generate deformation between the connector and the electrical control part, the stress condition of the connector can be improved, thereby improving the reliability of the electrical connection.

[0085] The battery device disclosed in the embodiment of the present application can be used in, but not limited to, electrical equipment such as vehicles, ships or aircraft. The power supply system of the electrical equipment can be composed of the battery device disclosed in the present application and other components, which is conducive to improving the reliability of the overall device.

[0086] The embodiment of the present application provides an electric device that uses a battery device including a battery cell as a power source, and the electric device is a device that uses electric energy as an energy source and realizes corresponding functions by consuming electric energy. Exemplarily, the electric device can be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, an electric airplane toy, etc., and the spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0087] The electric device of the embodiment of the present application may include a device body and a power supply device, the power supply device is used to supply power to the device body, and the power supply device may include a battery cell or a battery pack. The device body refers to a main structure that consumes electric energy to achieve corresponding functions. For example, the electric device may be a mobile phone, the device body is the part that can achieve functions such as communication, and the battery cell or battery pack is used to supply power to the part that can achieve functions such as communication. For example, the electric device may be a car, the device body is the part that can be used for people to sit and can be driven on the road, and the battery cell or battery pack is used to supply power to the part that can be used for people to sit and can be driven on the road. The power supply device refers to a device that can output electric energy. Exemplarily, electric energy can be output by a battery pack composed of battery cells.

[0088] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

[0089] Please refer to Figure 1 , Figure 1 Schematic diagram of the structure of vehicle 1 in some embodiments of the present application. Vehicle 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 10 is provided inside the vehicle 1, and the battery device 10 can be provided at the bottom, head or tail of the vehicle 1. The battery device 10 can be used to power the vehicle 1. For example, the battery device 10 can be used as an operating power source for the vehicle 1. The vehicle 1 can also include a controller 20 and a motor 30. The controller 20 is used to control the battery device 10 to power the motor 30, for example, for the starting, navigation and working power requirements of the vehicle 1 during driving.

[0090] In some embodiments of the present application, the battery device 10 can not only serve as an operating power source for the vehicle 1 , but also serve as a driving power source for the vehicle 1 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1 .

[0091] In order to meet different power requirements, the battery device 10 may include a plurality of battery cells 100, where a battery cell 100 refers to the smallest unit that constitutes a battery module or a battery pack. A plurality of battery cells 100 can be connected in series and / or in parallel via electrode terminals for use in various applications. The batteries mentioned in the present application include battery modules or battery packs. Among them, a plurality of battery cells 100 can be connected in series, in parallel, or in mixed connection, where mixed connection refers to a mixture of series and parallel connection. The battery device 10 may also be referred to as a battery pack. In the embodiments of the present application, a plurality of battery cells 100 may directly constitute a battery pack, or may first constitute a battery module, which may then constitute a battery pack.

[0092] Please refer to Figure 2 , Figure 2 It is a schematic diagram of the exploded structure of the battery device 10 in some embodiments of the present application. Figure 2 In the embodiment, the battery device 10 may include a plurality of battery modules and a case 200, and the plurality of battery modules are contained inside the case 200. The case 200 is used to contain the battery cells 100 to prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells 100. The case 200 may be a simple three-dimensional structure such as a single cuboid, cylinder or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as cuboids, cylinders or spheres, which is not limited in the embodiments of the present application. The material of the case 200 may be an alloy material such as aluminum alloy, iron alloy, etc., or a polymer material such as polycarbonate, polyisocyanurate foam plastic, or a composite material such as glass fiber and epoxy resin, which is not limited in the embodiments of the present application.

[0093] In some embodiments, the box 200 may include a first box portion 210 and a second box portion 220, the first box portion 210 and the second box portion 220 cover each other, and the first box portion 210 and the second box portion 220 jointly define a space for accommodating the battery cell 100. The second box portion 220 may be a hollow structure with one end open, the first box portion 210 may be a plate-like structure, and the first box portion 210 covers the open side of the second box portion 220, so that the first box portion 210 and the second box portion 220 jointly define a space for accommodating the battery cell 100. The first box portion 210 and the second box portion 220 may also be hollow structures with one side open, and the open side of the first box portion 210 covers the open side of the second box portion 220.

[0094] The battery module may include a plurality of battery cells 100, and the plurality of battery cells 100 may be first connected in series or in parallel or in a mixed connection to form a battery module, and the plurality of battery modules may then be connected in series or in parallel or in a mixed connection to form a battery. In the present application, the battery cell 100 may include a lithium-ion battery, a sodium-ion battery, a magnesium-ion battery, etc., which is not limited in the embodiments of the present application. The battery cell 100 may be in a cylindrical, flat, rectangular or other shape, which is not limited in the embodiments of the present application. The battery cell 100 may be in a cylindrical, flat, rectangular or other shape, which is not limited in the embodiments of the present application. However, for the sake of simplicity of description, the following embodiments are all described using a cubic square battery cell 100 as an example.

[0095] Please refer to Figure 3 , Figure 3 Schematic diagram of the exploded structure of a battery cell 100 in some embodiments of the present application. The battery cell 100 refers to the smallest unit constituting the battery device 10. The battery cell 100 includes a housing 110, an end cap 120, an electrode assembly 130 and other functional components.

[0096] The shell 110 is a component used to cooperate with the end cap 120 to form the internal environment of the battery cell 100, wherein the formed internal environment can be used to accommodate the electrode assembly 130, the electrolyte (not shown in the figure) and other components. The shell 110 and the end cap 120 can be independent components, and an opening can be set on the shell 110, and the internal environment of the battery cell 100 is formed by covering the opening with the end cap 120 at the opening. Without limitation, the end cap 120 and the shell 110 can also be integrated. Specifically, the end cap 120 and the shell 110 can form a common connection surface before other components are put into the shell, and when the interior of the shell 110 needs to be encapsulated, the end cap 120 covers the shell 110. The shell 110 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell 110 can be determined according to the specific shape and size of the electrode assembly 130. The shell 110 may be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in the present embodiment. The opening of the shell 110 may be located at the side or bottom of the shell 110, which is not limited in the present embodiment.

[0097] The end cap 120 refers to a component that can cover the opening of the outer shell 110 to isolate the internal environment of the battery cell 100 from the external environment. Without limitation, the shape of the end cap 120 can be adapted to the shape of the outer shell 110 to match the outer shell 110. For example, the end cap 120 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap 120 is not easily deformed when squeezed and collided, so that the battery cell 100 can have a higher structural strength and the safety performance can also be improved.

[0098] Functional components such as electrode terminals et may be provided on the end cap 120. Of course, the electrode terminals et may also be provided on the housing 110. No specific limitation is given here. The electrode terminals et may be used to electrically connect to the tabs of the electrode assembly 130 for outputting or inputting electrical energy of the battery cell 100. The battery cell 100 generally has two electrode terminals et, and the two electrode terminals et are respectively connected to the positive and negative tabs of the electrode assembly 130. The electrode terminal et connected to the positive tab is the positive electrode terminal et, and the electrode terminal et connected to the negative tab is the negative electrode terminal et. The two electrode terminals et may be provided on the same side or different sides of the battery cell 100. In some embodiments, the end cap 120 may also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 100 reaches a threshold value.

[0099] In some embodiments, the end cap 120 may also be provided with a liquid injection hole for injecting electrolyte into the battery cell 100. The end cap 120 may also be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in the present embodiment.

[0100] In some embodiments, an insulating member may be provided inside the end cap 120 to isolate the electrical connection components in the housing 110 from the end cap 120 to reduce the risk of short circuit. For example, the insulating member may be made of plastic, rubber, or the like.

[0101] In some embodiments, a pressure relief mechanism may also be provided on the housing 110 and / or the end cap 120. The pressure relief mechanism is used to release the internal pressure when the internal pressure or temperature of the battery cell 100 reaches a threshold value, so as to improve the safety performance of the battery cell 100. The threshold design varies according to different design requirements. The threshold may depend on one or more materials of the electrode assembly 130 and the separator in the battery cell 100. The pressure relief mechanism may take the form of an explosion-proof valve, an air valve, a pressure relief valve or a safety valve, and may specifically adopt a pressure-sensitive or temperature-sensitive element or structure, that is, when the internal pressure or temperature of the battery cell 100 reaches a threshold value, the pressure relief mechanism performs an action or a weak structure provided in the pressure relief mechanism is destroyed, thereby forming an opening or channel for the internal pressure or temperature to be released.

[0102] The electrode assembly 130 is a component in the battery cell 100 where an electrochemical reaction occurs. One or more electrode assemblies 130 may be included in the housing 110. The electrode assembly 130 is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and a separator is usually provided between the positive electrode sheet and the negative electrode sheet. The part of the positive electrode sheet and the negative electrode sheet with active material constitutes the main body of the electrode assembly 130, and the part of the positive electrode sheet and the negative electrode sheet without active material each constitutes a pole ear (not shown in the figure). The positive pole ear and the negative pole ear can be located together at one end of the main body or at both ends of the main body, can be located at the top of the main body, or can be located on the side wall of the main body, and no specific restrictions are made here. During the charge and discharge process of the battery device 10, the positive electrode active material and the negative electrode active material react with the electrolyte, and the pole ear connects the electrode terminal et to form a current loop. The separator is used to isolate the positive electrode sheet and the negative electrode sheet, and prevent the electrons in the battery cell 100 from passing freely, so that the ions in the electrolyte flow freely between the positive electrode sheet and the negative electrode sheet. The spacer may be a film made of materials such as PE (polyethylene) and PP (polypropylene).

[0103] According to some embodiments of this application, please refer to Figures 4 to 6 , Figure 4 is a three-dimensional structural diagram of a portion of the structure of the battery device 10 in some embodiments of the present application, Figure 5 is a schematic diagram of the three-dimensional structure of the electric control component 300 in some embodiments of the present application, Figure 6 for Figure 4 The partially enlarged structural schematic diagram at A in the middle shows that the present application provides a battery device 10 , which includes a battery cell 100 , a box body 200 and an electric control component 300 .

[0104] The battery cell 100 is disposed in the box body 200. For example, Figure 4 The second box body 200 of the box body 200 illustrated in some of the aforementioned embodiments is illustrated. Further, a plurality of battery cells 100 may be provided, and the plurality of battery cells 100 may be arranged in rows and columns in the first accommodation cavity Q1 defined by the second box body 200. The first direction F1 and the second direction F2 may be the length direction and the width direction of the box body 200, respectively, and the third direction F3 may be the height direction of the box body 200. The first direction F1, the second direction F2 and the third direction F3 are perpendicular to each other. It can be understood that the first direction F1, the second direction F2 and the third direction F3 are only exemplary descriptions, but are not limited thereto.

[0105] The electric control part 300 includes an electric control body 310, a connector 320 and a conductive member 330. The electric control body 310 is disposed in the box body 200 and electrically connected to the battery cell 100. The connector 320 is disposed through the box body 200. The connector 320 has a first end e1 located in the box body 200 and a second end e2 exposed outside the box body 200. The conductive member 330 is electrically connected between the electric control body 310 and the first end e1, and at least a portion of the conductive member 330 is configured to be deformable.

[0106] The electric control unit 300 is an electric control management device. The electric control body 310 can be a component for realizing energy output or signal output or input. The electric control body 310 is electrically connected to the battery cell 100. Figure 4 In the illustrated situation, only the relative positional relationship between the electric control component 300 and the battery cell 100 is illustrated, and the connection relationship between the electric control body 310 and the battery cell 100 is not shown. The conductive member 330 is a component that can be used for conduction. The connector 320 can be matched with the electric control body 310 to realize the corresponding electric control management. The connector 320 and the electric control body 310 are electrically connected by means of the conductive member 330. For example, the connector 320 can be a high-voltage connector 320, so that power transmission can be realized. For another example, the connector 320 can be a low-voltage connector 320, so that signal transmission can be realized.

[0107] The connector 320 is disposed through the box body 200, that is, the box body 200 is provided with a mounting hole, and the connector 320 is connected to the box body 200 by means of the mounting hole. The second end e2 of the connector 320 is exposed outside the box body 200 through the mounting hole, and can realize electrical connection with an external device. The first end e1 and the second end e2 may be directly connected, in which case a portion of the second end e2 is located in the mounting hole; or the connector 320 may further include a connecting portion, which is connected between the first end e1 and the second end e2, in which case a portion of the connecting portion is located in the mounting hole.

[0108] Depending on the function of the electric control component 300, the external device electrically connected to the connector 320 is different. Exemplarily, when the connector 320 is a high-voltage connector 320, taking the electric device as a new energy vehicle as an example, the external device can be a motor controller 20, an electric air-conditioning compressor, a PTC (Positive Temperature Coefficient) heater, a DC-DC converter and other devices. For example, when the new energy vehicle is started, the electric control component 300 can distribute the direct current of the battery to the motor controller 20 to drive the motor to operate, so that the new energy vehicle can travel. No specific restrictions are made here.

[0109] At least a portion of the conductive member 330 is configured to be deformable, that is, at least a portion of the conductive member 330 can change in length, bending degree, thickness, area, etc. under the action of a force. In other words, the deformation of the conductive member 330 can be a tensile deformation or a bending deformation. The desired deformation can be obtained by controlling the shape, material, and size of the conductive member 330, and no specific limitation is made here.

[0110] Thus, by providing a conductive member 330 electrically connecting the electric control body 310 and the connector 320, and making at least a portion of the conductive member 330 configured to be deformable, not only can the damage to the connector 320 be reduced during the installation of the connector 320 in the box 200, but also the external force can be absorbed and buffered during the use of the battery device 10, thereby protecting the connector 320. Therefore, the stress condition of the connector 320 can be improved as a whole, thereby improving the reliability of the electrical connection between the connector 320 and the external device, and further improving the reliability of the electrical connection between the battery device 10 and the external device.

[0111] It can be understood that compared with the conductive part 330 that cannot be deformed, the embodiment of the present application configures at least a portion of the conductive part 330 to be deformable, which not only can reduce the space occupied by the conductive part 330 and reduce the cost of use, but also can improve the situation where the assembly gap existing during the assembly process causes the connector 320 to be subjected to force and thus damaged.

[0112] According to some embodiments of this application, please continue to refer to Figures 4 to 6 , and combined with reference Figures 7 to 10 , Figure 7 for Figure 6 The schematic diagram of the structure in which part of the structure of the electric control component 300 is removed, Figure 8 This is a partial enlarged structural diagram of the matching structure of the box body 200 and the electric control component 300 in some embodiments of the present application. Fig. 9 This is a three-dimensional structural diagram of the battery device 10 in some embodiments of the present application with some structures removed. Fig.10 for Fig. 9 In the partial enlarged structural diagram at B in FIG. 1 , the conductive member 330 includes a first portion P1, a second portion P2 and a third portion P3. The first portion P1 is electrically connected to the electrical control body 310. The second portion P2 is electrically connected to the first end portion e1. The third portion P3 is electrically connected between the first portion P1 and the second portion P2. Among the first portion P1, the second portion P2 and the third portion P3, at least the third portion P3 is configured to be deformable.

[0113] The conductive member 330 includes three parts, namely, a first part P1, a second part P2 and a third part P3. It can be understood that these three parts are relative and can all be conductive. Among these three parts, the third part P3 can be configured to be deformable, the first part P1 and the third part P3 can both be configured to be deformable, the second part P2 and the third part P3 can both be configured to be deformable, and the first part P1, the second part P2 and the third part P3 can all be configured to be deformable. As long as at least the third part P3 is configured to be deformable, no specific limitation is made here.

[0114] Among these three parts, the first part P1 and the second part P2 are electrically connected to their respective corresponding components, and the third part P3 has no direct electrical connection with other components. The third part P3 is electrically connected between the first part P1 and the second part P2, providing a channel for current to flow between the first part P1 and the second part P2.

[0115] In this way, since at least the third part P3 can be deformed, on the one hand, when the conductive part 330 is subjected to external force, the third part P3 can absorb and disperse the external force through its own deformation, which can not only reduce the loose connection caused by the external force, but also improve the direct transmission of the force to the first part P1 and the second part P2, thereby reducing the impact on the electrical connection; on the other hand, it is also convenient for the maintenance and replacement of the electrical control body 310 and the connector 320.

[0116] It should be noted that the first part P1, the second part P2 and the third part P3 can be an integral structure, and further, can be an integrally formed structure, but it is not limited thereto. The connection method between the first part P1, the second part P2 and the third part P3 can be determined according to the specific structure of the conductive member 330, and is not specifically limited here.

[0117] According to some embodiments of this application, please continue to refer to Figures 5 to 10 The electric control body 310 includes a housing 311 and an electric control module 312. The housing 311 is provided with a port (not shown in the figure) electrically connected to the battery cell 100. The electric control module 312 is arranged in the housing 311 and is electrically connected to the port and the first part P1 respectively. The first part P1 is located in the housing 311 and connected to the housing 311, the second part P2 is located outside the housing 311, and at least part of the third part P3 is located outside the housing 311.

[0118] The housing 311 is a component having a second accommodating cavity Q2. The housing 311 can provide an accommodating space for the relevant components of the electric control body 310 and protect the relevant components accommodated in the housing 311. The housing 311 can be in the shape of a rectangular parallelepiped as shown in the figure, or in other shapes, which are not limited here. Figures 7 to 9 In the illustrated case, part of the structure of the housing 311 is removed to facilitate the illustration of the interior of the housing 311. The housing 311 is made of an insulating material, specifically an insulating plastic. The port provided on the housing 311 is an interface for electrically connecting the electric control unit 300 to the battery cell 100, and the port is exposed to the outside of the housing 311 to facilitate the electrical connection of the battery cell 100. The battery cell 100 can be electrically connected to the port by means of a related electrical connection member.

[0119] The electric control module 312 may be a power distribution module, which may be a plurality of circuits connected in series or in parallel, or may include electronic components such as relays. At this time, the electric control component 300 may guide and distribute the input high-voltage current, and flow it to external electrical equipment through the conductive component 330 and the connector 320, thereby meeting the power demand of different electrical equipment.

[0120] At least part of the third part P3 is located outside the shell 311. It can be that part of the third part P3 is located inside the shell 311 and the other part is located outside the shell 311, or the third part P3 is located entirely outside the shell 311. In the case where the third part P3 is located entirely outside the shell 311, the connection between the first part P1 and the third part P3 corresponds to the wall of the shell 311, so that the third part P3 is located entirely outside the shell 311. Fig. 9 and Fig.10 As an example, combined with reference Fig.11 , Fig.11 It is a schematic cross-sectional view of a partial structure of the conductive member 330 in some embodiments of the present application cooperating with related components in the battery device 10 , illustrating a situation where a portion of the third portion P3 is located inside the shell 311 and another portion is located outside the shell 311 .

[0121] In this way, since at least part of the third part P3 is located outside the shell 311, not only can the larger space outside the shell 311 be used to produce deformation, which is conducive to more flexible connection of the connector 320 to the box 200, and the space inside the shell 311 can be made more compact, but it is also conducive to forming a relatively closed environment inside the shell 311, thereby improving the reliability of related components inside the shell 311.

[0122] According to some embodiments of this application, please continue to refer to Figures 9 to 11, along the direction from the first part P1 to the second part P2, the maximum size of the third part P3 located outside the shell 311 is greater than or equal to 5 mm and less than or equal to 20 mm.

[0123] For example, Figure 5 , Fig. 9 and Fig.10 For example, the direction from the first part P1 to the second part P2 is parallel to the first direction F1, and the dimension of the third part P3 outside the housing 311 along the first direction F1 is a first length d1, and the first length d1 is greater than or equal to 5 mm and less than or equal to 20 mm. For example, the first length d1 can be 5 mm, 7 mm, 8 mm, 10 mm, 12 mm, 15 mm, 17 mm, 18 mm or 20 mm. The first length d1 can be any value between 5 mm and 20 mm, and is not specifically limited here.

[0124] It should be noted that the direction from the first part P1 to the second part P2 may also intersect with the first direction F1 shown in the figure. The direction from the first part P1 to the second part P2 may be determined according to the structure of the housing 311 and the direction in which the conductive member 330 extends from the housing 311, and is not specifically limited here.

[0125] In this way, by controlling the size of the third portion P3 of the conductive member 330 outside the shell 311, not only can the stability and reliability of the third portion P3 of the conductive member 330 outside the shell 311 be enhanced, but also the space outside the shell 311 can be used more efficiently.

[0126] According to some embodiments of this application, please continue to refer to Fig.10 and Fig.11 At least one of the first part P1 and the second part P2 includes a deformation segment, and the deformation segment is configured to be able to generate deformation. The deformation capacity of the deformation segment is smaller than the deformation capacity of the third part P3.

[0127] A deformation segment refers to a structure that can be deformed under the action of an external force. In the first part P1 and the second part P2, the first part P1 may include a deformation segment, the second part P2 may include a deformation segment, or both the first part P1 and the second part P2 may include a deformation segment. As long as the deformation capacity of the third part P3 is greater than the deformation capacity of the remaining parts of the conductive member 330, no specific limitation is made here. In the case where the deformation capacity of the third part P3 is greater than the deformation capacity of the remaining parts of the conductive member 330, when subjected to an external force, the third part P3 is more likely to deform than the remaining parts of the conductive member 330, so that the external force can be absorbed, buffered and dispersed through the deformation of the third part P3.

[0128] In this way, when subjected to external force, the conductive member 330 can more easily absorb, buffer and disperse the external force through the deformation of the third portion P3, thereby protecting the first portion P1 and the second portion P2. At the same time, when at least one of the first portion P1 and the second portion P2 includes a deformation section, when the deformable portion is subjected to external force, the force can also be absorbed, buffered and dispersed, thereby further improving the reliability and stability of the connection.

[0129] According to some embodiments of this application, please continue to refer to Fig.11 , and combined with reference Fig.12 , Fig.12 Schematic diagram of the structure of the conductive member 330 in some embodiments of the present application, the conductive member 330 includes a plurality of stacked conductive layers 331. The portions of the plurality of conductive layers 331 located in the first portion P1 are fixedly connected, and the portions of the plurality of conductive layers 331 located in the second portion P2 are fixedly connected.

[0130] The conductive layer 331 is a layer structure arranged in layers, and is a material layer with a conductive function. The thickness of the conductive layer 331 is relatively thin. The material of the conductive layer 331 can be a conductive material such as a metal, a conductive polymer, etc. The conductive layer 331 can be used as a component in a multilayer structure for transmitting current or electrical signals. The conductive layer 331 can be an integrally formed structure. The conductive layer 331 can be set to two layers, three layers, four layers, five layers or other number of layers, without specific limitation here.

[0131] The portions of the multiple conductive layers 331 located at the first portion P1 are fixedly connected, which can increase the structural strength of the first portion P1 of the conductive member 330. The portions of the multiple conductive layers 331 located at the second portion P2 are fixedly connected, which can increase the structural strength of the second portion P2 of the conductive member 330. In this way, the strength of the first portion P1 and the second portion P2 of the conductive member 330 is greater than that of the third portion P3.

[0132] The third part P3 is a part of a plurality of conductive layers 331 stacked in layers, and there may be certain gaps between the stacked conductive layers 331. This structure enables the portion of each conductive layer 331 located in the third part P3 to be relatively independently displaced when subjected to external force, so that each conductive layer 331 in the third part P3 can slide and bend relative to each other, thereby making the third part P3 more likely to deform. At the same time, when an external force acts on the third part P3, the external force will also be dispersed on the plurality of conductive layers 331, and the stress borne by each conductive layer 331 is relatively small, so that it will be more likely to deform and can improve the situation of rupture or damage, thereby increasing the overall deformation capacity of the third part P3.

[0133] In this way, not only can the mechanical strength and flexibility of the conductive part 330 be enhanced, which is conducive to the deformation of the third part P3 under the action of external force, but also the reliability of the connection between the first part P1 and the electrical control body 310 and the reliability of the connection between the second part P2 and the connector 320 can be improved.

[0134] According to some embodiments of this application, please continue to refer to Fig.12 , portions of the plurality of conductive layers 331 located in the first portion P1 are welded and connected; and / or portions of the plurality of conductive layers 331 located in the second portion P2 are welded and connected.

[0135] Different welding methods can be selected according to the materials of different conductive layers 331. Different welding processes can be used for different welding methods. For example, corresponding parts of each conductive layer 331 can be welded one by one, so that solder can be placed on the connection surface of each conductive layer 331 and the adjacent conductive layer 331. For another example, corresponding solder can be set on the corresponding part of the conductive layer 331 in advance, and then the connection can be achieved by heating and welding the whole. No specific limitation is made here.

[0136] This not only enhances the strength and reliability of the connection, but also helps reduce contact resistance.

[0137] According to some embodiments of this application, please continue to refer to Fig.12 The material of the multiple conductive layers 331 includes at least one of copper and aluminum.

[0138] Since copper has a relatively high tensile strength and can withstand a certain degree of stretching and bending without breaking easily, and aluminum has good flexibility, that is, both copper and aluminum have a certain mechanical strength and toughness, which can improve the situation where the conductive part 330 is damaged due to deformation of the third part P3.

[0139] According to some embodiments of this application, please continue to refer to Fig.12 The conductive member 330 further includes a protective layer 332. The plurality of conductive layers 331 constitute a conductive layer group. Along the stacking direction of the plurality of conductive layers 331, at least one side of the conductive layer group is provided with the protective layer 332.

[0140] The protective layer 332 is a layer structure for protecting the conductive layer group. The material of the protective layer 332 can be a conductive material. Fig.12 As an example, a situation where protective layers 332 are disposed on both sides of the conductive layer group is illustrated.

[0141] In this way, the protective layer 332 can be used to electrically and structurally protect the conductive layer group, thereby improving the reliability of the conductive member 330 .

[0142] According to some embodiments of this application, please continue to refer to Fig.12 The material of the protective layer 332 includes at least one of nickel, gold, silver, and tin.

[0143] Thus, since nickel, gold, silver and tin have certain passivation ability, hardness and stability, they are beneficial to protecting the conductive layer group.

[0144] According to some embodiments of this application, please refer to Fig.13 , Fig.13 The third part P3 has a first connection end u1 connected to the first part P1 and a second connection end u2 connected to the second part P2. The third part P3 extends from the first connection end u1 to the second connection end u2 in a non-linear shape.

[0145] Non-linear means that the shape can be curved, bent, twisted, or a combination of at least two of the three. No specific limitation is given here. For example, Fig.13 As an example, the third portion P3 is shown extending from the first connection end u1 to the second connection end u2 in a curved shape.

[0146] In this way, not only can the third part P3 absorb, disperse and buffer the force through its own deformation such as bending and twisting, but also the distribution of the force can be more uniform through the change of the shape of the third part P3, thereby improving the fatigue resistance. At the same time, the non-linear third part P3 can also better adapt to the spatial layout inside the battery device 10, which is convenient for installation and maintenance.

[0147] According to some embodiments of this application, please continue to refer to Fig.13 , and combined with reference Fig.14 , Fig.14 This is a schematic diagram of the structure of the conductive member 330 in some other embodiments of the present application, wherein the third portion P3 is protruding relative to the first portion P1 and the second portion P2; and / or the third portion P3 is curved and extends from the first connection end u1 to the second connection end u2.

[0148] For example, Fig.13 and Fig.14For example, one side of the third part P3 along the two sides of the third direction F3 is convex, and the other side is concave, so that the third part P3 is convex relative to the first part P1 and the second part P2. In this way, it is conducive to buffering, absorbing and dispersing the force in the third direction F3. Of course, the third part P3 can also be convex relative to the first part P1 and the second part P2 along the second direction F2, which is conducive to buffering, absorbing and dispersing the force in the second direction F2. No specific limitation is made here.

[0149] Again, exemplary, continue with Fig.13 and Fig.14 For example, the third portion P3 may be bent in the third direction F3, thereby forming a structure extending and bending from the first connection end u1 to the second connection end u2. Fig.15 For example, Fig.15 The third portion P3 may be bent and extended in the second direction F2. For example, the third portion P3 may be bent in an S-shape. No specific limitation is made here.

[0150] In this way, when the third part P3 is protruding relative to the first part P1 and the second part P2, not only can the protruding third part P3 provide more space for the connection operation when the first part P1 and the second part P2 of the conductive member 330 are respectively connected to the relevant components, such as welding, riveting or fixing with bolts and nuts, but also can reduce the load borne by the first part P1 and the second part P2 through the elastic deformation of the third part P3 when the conductive member 330 is subjected to external forces, thereby reducing the risk of deformation, fracture and other damage to the conductive member 330, improving the structural stability and reliability of the conductive member 330, and extending its service life. When the third part P3 is bent and extended from the first connection end u1 to the second connection end u2, not only can the third part P3 be better able to disperse stress when facing external forces, improve the stability and reliability of the overall structure, but also facilitate more flexible use of space.

[0151] According to some embodiments of this application, please refer to Fig.16 , Fig.16 Schematic diagram of the structure of the conductive member 330 in some embodiments of the present application, along the thickness direction of the conductive member 330, the thickness of the first portion P1 and the thickness of the second portion P2 are both greater than the thickness of the third portion P3. The thickness direction of the conductive member 330 and the direction from the first portion P1 to the second portion P2 are perpendicular to each other.

[0152] For example, Fig.16For example, the thickness direction of the conductive member 330 is parallel to the third direction F3, the direction from the first part P1 to the second part P2 is parallel to the first direction F1, the thickness of the first part P1 is the first thickness h1, the thickness of the second part P2 is the second thickness h2, the thickness of the third part P3 is the third thickness h3, and the first thickness h1 and the second thickness h2 are both greater than the third thickness h3. The first thickness h1 and the second thickness h2 may be equal or unequal, and no specific limitation is made here.

[0153] In this way, since the first part P1 and the second part P2 are thicker than the third part P3, not only the contact resistance can be reduced, but also the connection stability and the ability to resist external forces can be enhanced. Furthermore, since the third part P3 is thinner than the first part P1 and the second part P2, the third part P3 is weaker than the first part P1 and the second part P2. When the conductive member 330 is subjected to an external force, the external force is more easily transmitted or acts on the third part P3, so that the elastic deformation generated by the third part P3 is used to absorb, disperse and buffer the external force.

[0154] According to some embodiments of this application, please continue to refer to Figures 13 to 16 The first part P1, the second part P2 and the third part P3 are an integrally formed structure.

[0155] In this way, it is not only easy to manufacture the conductive member 330, but also the conductive member 330 has certain strength, rigidity and fatigue resistance.

[0156] According to some embodiments of this application, please continue to refer to Figures 8 to 11 The housing 311 includes a housing body 311a and a mounting portion 311b disposed in the housing body 311a. The mounting portion 311b is connected to the housing body 311a. At least part of the first portion P1 is covered by the mounting portion 311b and is connected to the mounting portion 311b.

[0157] Exemplarily, the mounting portion 311b and the shell body 311a may be an integrated structure, and further, may be an integrated molded structure. Of course, the mounting portion 311b may also be installed in the shell body 311a by means of a related mounting structure, which is not specifically limited here.

[0158] In this way, by providing the mounting portion 311b, not only is it convenient to install the first part P1, but also because at least part of the first part P1 is covered on the mounting portion 311b, the mounting portion 311b can support at least part of the first part P1, thereby increasing the contact area of ​​the connection, thereby making the connection between the first part P1 and the mounting portion 311b more secure.

[0159] According to some embodiments of this application, please continue to refer to Figures 8 to 11, the first part P1 is integrally connected to the mounting portion 311b.

[0160] Thus, the integrated connection makes the first part P1 and the mounting part 311b form a continuous integral structure, eliminating the connection gap that may exist in traditional connection methods (such as bolt connection, snap connection, etc.). This seamless structure can not only better withstand external forces, but also improve the situation where the first part P1 and the mounting part 311b are relatively displaced due to loose connection. In addition, the integrated connection method is also easy to process and manufacture.

[0161] According to some embodiments of this application, please continue to refer to Figures 8 to 11 , the first part P1 is connected to the mounting portion 311b by injection molding.

[0162] Exemplarily, the material of the mounting portion 311 b may be plastic, which is also conducive to achieving a more secure connection with the first portion P1 through injection molding.

[0163] In this way, the connection by injection molding not only helps to form a seamless connection structure, but also improves the connection firmness between the first part P1 and the mounting portion 311b. It can be understood that compared with the situation where the first part P1 and the mounting portion 311b are connected by related fasteners, the connection by injection molding is also conducive to saving space.

[0164] According to some embodiments of this application, please continue to refer to Figures 8 to 11 The shell body 311a includes a first wall b1. Along the direction from the mounting portion 311b to the second end e2, the first wall b1 is located between the mounting portion 311b and the second end e2. The mounting portion 311b is connected to a side of the first wall b1 away from the second end e2.

[0165] For example, Figures 8 to 11 For example, the first wall b1 is a side wall of the shell body 311a arranged along the first direction F1.

[0166] This helps to shorten the length of the conductive member 330 inside the shell body 311a, which not only helps to improve the space utilization inside the shell body 311a and facilitates the connection between the first part P1 and the mounting part 311b, but also reduces the swing amplitude of the conductive member 330 when subjected to external force, thereby reducing the risk of damage to the first part P1 and the second part P2 of the conductive member 330.

[0167] Of course, in some other embodiments, the mounting portion 311b may abut against the first wall b1, and the mounting portion 311b may be connected to the bottom wall of the housing 311 arranged along the third direction F3. No specific limitation is made here.

[0168] According to some embodiments of this application, please continue to refer to Figures 8 to 11 The electric control component 300 further includes a first fastener 340, by which the conductive member 330 is fixedly connected to the electric control body 310; and / or, the electric control component 300 further includes a second fastener 360, by which the conductive member 330 is fixedly connected to the first end portion e1.

[0169] For example, the first fastener 340 may be a screw, a bolt or the like, and the second fastener 360 may be a screw, a bolt or the like, which are not specifically limited herein. Figures 8 to 11 For example, the first portion P1 of the conductive member 330 may have a first connection hole (not shown) along the third direction F3, and the second portion P2 may have a second connection hole (not shown) along the third direction F3. The first fastener 340 is provided with a first connection hole along the third direction F3, and the second fastener 360 is provided with a second connection hole along the third direction F3.

[0170] Thus, by providing the first fastener 340, not only can the conductive member 330 be tightly connected to the electrical control body 310 and the ability to resist external forces be improved, but also maintenance is facilitated. By providing the second fastener 360, not only can the conductive member 330 be tightly connected to the first end e1 of the connector 320 and the ability to resist external forces be improved, but also maintenance is facilitated.

[0171] According to some embodiments of this application, please continue to refer to Figures 7 to 9 The electric control member 300 further includes a connecting member 350, which is electrically connected between the first part P1 and the electric control module 312. Both ends of the connecting member 350 can be connected to the first part P1 and the electric control module 312 respectively by means of relevant fasteners.

[0172] In this way, the electric control module 312 and the mounting portion 311b can be arranged more flexibly according to the space in the housing 311 to meet different arrangement requirements. At the same time, the length of the first portion P1 of the conductive member 330 can be shortened as much as possible, the stability and reliability of the conductive member 330 can be improved, and the space in the housing 311 and the cost of the conductive member 330 can be saved.

[0173] According to some embodiments of this application, please continue to refer to Figures 5 to 7 The electric control component 300 further includes a mounting component 370, which is sleeved on the connector 320 and fixedly connected to the box body 200. For example, the mounting component 370 and the box body 200 can be connected via related fastening components.

[0174] In this way, the connector 320 can be installed on the box 200 through the installation member 370, and the installation process is more convenient.

[0175] According to some embodiments of this application, please continue to refer to Figures 9 to 11 , the conductive member 330 is configured as a flexible member; and / or, the conductive member 330 is configured as a sheet member; and / or, the second end e2 of the connector 320 is provided with a pin; and / or, the electrical control member 300 is configured as a high-voltage distribution box.

[0176] Among them, flexible parts refer to parts that can undergo elastic deformation under certain external forces, and can recover at least part of them after the external force is removed, and will not cause material damage or performance loss due to deformation within a preset range. Sheet parts are parts with relatively small thickness, usually in a flat shape. The length and width dimensions of the sheet parts are both greater than the thickness dimension. The pin of the connector 320 is a metal part used to achieve electrical connection, usually in the shape of a slender needle. The pin can be inserted into the corresponding hole to establish a conductive path between the two parts, thereby realizing signal transmission and power transmission. The high-voltage distribution box is mainly used to manage the distribution of high-voltage electrical energy in the battery device 10, and can protect the battery cell 100 from overcurrent, overvoltage, short circuit and other faults.

[0177] When the conductive member 330 is configured as a flexible member, not only can the conductive member 330 absorb and disperse the external forces through its own deformation when the conductive member 330 is subjected to external forces, but also the conductive member 330 has certain anti-fatigue performance and is easy to install. When the conductive member 330 is configured as a sheet, it is conducive to the deformation of the conductive member 330 and the reduction of the space occupied. When the second end e2 of the connector 320 is provided with a pin, the pin can be inserted into the corresponding hole, and a tight connection is achieved through friction and mechanical bite. This connection method can withstand a certain degree of vibration, pulling and other mechanical external forces, and is not easy to loosen; at the same time, when the second end e2 is electrically connected to the external device, the connection accuracy during docking can be improved by means of the matching form of the pin and the hole. The overall structure is simple and convenient for plugging. When the electric control component 300 is configured as a high-voltage distribution box, the high-voltage distribution box has the function of high-voltage power distribution and can achieve good power distribution management.

[0178] According to some embodiments of this application, please continue to refer to Figures 5 to 11The present application provides an electric control component 300 for a battery device 10. The battery device 10 includes a battery cell 100 and a box 200, the battery cell 100 is arranged in the box 200, and the electric control component 300 includes an electric control body 310, a connector 320 and a conductive member 330. The electric control body 310 is used to be arranged in the box 200 and electrically connected to the battery cell 100. The connector 320 is used to pass through the box 200. The connector 320 has a first end e1 located in the box 200, and a second end e2 exposed outside the box 200. The conductive member 330 is electrically connected between the electric control body 310 and the first end e1. At least a portion of the conductive member 330 is configured to be deformable.

[0179] By providing a conductive member 330 electrically connecting the electric control body 310 and the connector 320, and making at least a portion of the conductive member 330 configured to be deformable, not only can the damage to the connector 320 be reduced during the installation of the connector 320 in the box 200, but also the external force can be absorbed and buffered during the use of the battery device 10, thereby protecting the connector 320. Therefore, the stress condition of the connector 320 can be improved as a whole, thereby improving the reliability of the electrical connection between the connector 320 and the external device, and further improving the reliability of the electrical connection between the battery device 10 and the external device.

[0180] It should be noted that the relevant implementation methods and advantages of the electric control component 300 can refer to the contents illustrated in some of the aforementioned embodiments, which will not be elaborated here.

[0181] According to some embodiments of the present application, the present application provides an electrical device, including the battery device 10 in any of the above embodiments; or, including the electrical control component 300 in any of the above embodiments.

[0182] The battery device 10 is used to supply power to an electrical device, which may be any of the aforementioned devices or systems to which the battery device 10 is applied.

[0183] In the case where the electric device includes the battery device 10 in any of the above embodiments, the advantages possessed by the battery device 10 in any of the above embodiments are also possessed by the electric device, which will not be described in detail here. In the case where the electric device includes the electric control component 300 in any of the above embodiments, the advantages possessed by the electric control component 300 in any of the above embodiments are also possessed by the electric device, which will not be described in detail here.

[0184] According to some embodiments of this application, please refer to Figures 4 to 11The embodiment of the present application provides a battery device 10, including a battery cell 100, a box 200 and an electric control component 300. The battery cell 100 is arranged in the box 200. The electric control component 300 includes an electric control body 310, a connector 320 and a conductive member 330. The electric control body 310 is arranged in the box 200 and electrically connected to the battery cell 100. The connector 320 is inserted into the box 200. The connector 320 has a first end e1 located in the box 200, and a second end e2 exposed outside the box 200. The conductive member 330 includes a first part P1, a second part P2 and a third part P3. The first part P1 is electrically connected to the electric control body 310. The second part P2 is electrically connected to the first end e1. The third part P3 is connected between the first part P1 and the second part P2. Among the first part P1, the second part P2 and the third part P3, at least the third part P3 is configured to be able to generate deformation. The electric control body 310 includes a housing 311 and an electric control module 312. The first part P1 is located inside the housing 311 and connected to the housing 311, the second part P2 is located outside the housing 311, and at least part of the third part P3 is located outside the housing 311. The housing 311 includes a shell body 311a and a mounting portion 311b disposed inside the shell body 311a. The mounting portion 311b is connected to the shell body 311a. At least part of the first part P1 is covered on the mounting portion 311b and connected to the mounting portion 311b. The first part P1 is connected to the mounting portion 311b by injection molding. The shell body 311a includes a first wall b1. Along the direction from the mounting portion 311b to the second end e2, the first wall b1 is located between the mounting portion 311b and the second end e2. The mounting portion 311b is connected to the side of the first wall b1 that is away from the second end e2.

[0185] The following is an exemplary description of the installation process of the electric control component 300 provided in the embodiment of the present application in combination with the contents illustrated in some of the above embodiments, but is not limited thereto.

[0186] Please refer to Figures 4 to 11 First, place the electric control component 300 in the first accommodating cavity Q1 of the box body 200, and use the electrical connecting component to electrically connect the battery cell 100 and the port on the shell 311 of the electric control component 300; then, pass the second end e2 of the connector 320 of the electric control component 300 through the mounting hole on the second box body 200 of the box body 200, and extend it out of the box body 200; then, connect the mounting piece 370 connected to the connector 320 to the second box body 200 with the help of relevant fastening components to complete the installation of the electric control component 300.

[0187] It can be understood that in the above process, since at least part of the conductive member 330 can be deformed, the situation in which the connector 320 is damaged due to force applied to the connector 320 due to assembly gap, tolerance or error during installation of the connector 320 in the second box body 200 is improved.

[0188] It should be noted that the connector 320 and the conductive member 330 of the electric control member 300 may not be connected first, and the part of the electric control member 300 other than the connector 320 may be installed in the second box 200, and the connector 320 may be installed on the second box 200, and then the first end e1 of the connector 320 may be connected to the second part P2 of the conductive member 330. In this case, the situation of damage to the connector 320 may also be improved, which will not be described in detail.

[0189] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery device (10), characterized in that: The battery device (10) comprises: A battery cell (100) and a box (200), wherein the battery cell (100) is arranged in the box (200); and An electric control component (300), the electric control component (300) comprising: An electric control body (310) is arranged in the box (200); the electric control body (310) comprises a shell (311) and an electric control module (312); the shell (311) is provided with a port electrically connected to the battery cell (100); the electric control module (312) is arranged in the shell (311) and electrically connected to the port; A connector (320) is inserted into the box (200); the connector (320) has a first end (e1) located inside the box (200) and a second end (e2) exposed outside the box (200); and A conductive member (330), comprising a first portion (P1), a second portion (P2), and a third portion (P3) electrically connected between the first portion (P1) and the second portion (P2); the first portion (P1) is electrically connected to the electric control module (312), and the second portion (P2) is electrically connected to the first end portion (e1); The first part (P1) is located inside the shell (311) and connected to the shell (311), the second part (P2) is located outside the shell (311), and at least part of the third part (P3) is located outside the shell (311); among the first part (P1), the second part (P2) and the third part (P3), at least the third part (P3) is configured to be capable of deformation; The shell (311) comprises a shell body (311a) and a mounting portion (311b) disposed in the shell body (311a), wherein the mounting portion (311b) is connected to the shell body (311a); at least part of the first portion (P1) is covered on the mounting portion (311b) and is connected to the mounting portion (311b).

2. The battery device (10) according to claim 1, characterized in that: Along the direction from the first part (P1) to the second part (P2), the maximum dimension of the third part (P3) located outside the shell (311) is greater than or equal to 5 mm and less than or equal to 20 mm.

3. The battery device (10) according to claim 1, characterized in that: The first part (P1) is integrally connected to the mounting portion (311b).

4. The battery device (10) according to claim 3, characterized in that: The first part (P1) is connected to the mounting part (311b) by injection molding.

5. The battery device (10) according to claim 1, characterized in that: The shell body (311a) comprises a first wall (b1); along the direction from the mounting portion (311b) to the second end portion (e2), the first wall (b1) is located between the mounting portion (311b) and the second end portion (e2); The mounting portion (311b) is connected to a side of the first wall (b1) facing away from the second end portion (e2).

6. The battery device (10) according to any one of claims 1 to 5, characterized in that: At least one of the first part (P1) and the second part (P2) includes a deformation section, which is configured to be able to generate deformation; the deformation capacity of the deformation section is smaller than the deformation capacity of the third part (P3).

7. The battery device (10) according to any one of claims 1 to 5, characterized in that: The conductive member (330) comprises a plurality of conductive layers (331) stacked in layers; Parts of the multiple conductive layers (331) located in the first portion (P1) are fixedly connected, and parts of the multiple conductive layers (331) located in the second portion (P2) are fixedly connected.

8. The battery device (10) according to claim 7, characterized in that The plurality of conductive layers (331) are partially welded and connected at the first portion (P1); and / or The plurality of conductive layers (331) are partially welded and connected at the second portion (P2).

9. The battery device (10) according to claim 7, characterized in that: The material of the multiple conductive layers (331) includes at least one of copper and aluminum.

10. The battery device (10) according to claim 7, characterized in that: The conductive member (330) further includes a protective layer (332); The plurality of conductive layers (331) constitute a conductive layer group; along the stacking direction of the plurality of conductive layers (331), the protective layer (332) is provided on at least one side of the conductive layer group.

11. The battery device (10) according to claim 10, characterized in that The material of the protective layer (332) includes at least one of nickel, gold, silver and tin.

12. The battery device (10) according to any one of claims 1 to 5, characterized in that: The third part (P3) has a first connection end (u1) connected to the first part (P1), and a second connection end (u2) connected to the second part (P2); Wherein, the third portion (P3) extends from the first connection end (u1) to the second connection end (u2) in a non-linear shape.

13. The battery device (10) according to claim 12, characterized in that The third portion (P3) is arranged to protrude relative to the first portion (P1) and the second portion (P2); and / or The third portion (P3) is bent and extends from the first connection end (u1) to the second connection end (u2).

14. The battery device (10) according to any one of claims 1 to 5, characterized in that: Along the thickness direction of the conductive member (330), the thickness of the first portion (P1) and the thickness of the second portion (P2) are both greater than the thickness of the third portion (P3); The thickness direction of the conductive member (330) and the direction from the first portion (P1) to the second portion (P2) are perpendicular to each other.

15. The battery device (10) according to any one of claims 1 to 5, characterized in that: The first part (P1), the second part (P2) and the third part (P3) are an integrally formed structure.

16. The battery device (10) according to any one of claims 1 to 5, characterized in that: The electric control component (300) further comprises a first fastener (340), and the conductive component (330) is fixedly connected to the electric control body (310) by means of the first fastener (340); and / or The electric control component (300) further comprises a second fastener (360), and the conductive component (330) is fixedly connected to the first end portion (e1) of the connector (320) by means of the second fastener (360).

17. The battery device (10) according to any one of claims 1 to 5, characterized in that: The conductive member (330) is configured as a flexible member; and / or The conductive member (330) is configured as a sheet-like member; and / or The second end (e2) of the connector (320) is provided with a pin; and / or The electric control component (300) is configured as a high-voltage distribution box.

18. An electric control component (300) for a battery device (10), the battery device (10) comprising a battery cell (100) and a housing (200), the battery cell (100) being arranged in the housing (200), characterized in that: The electric control component (300) comprises: An electric control body (310) is used to be arranged in the box (200); the electric control body (310) comprises a shell (311) and an electric control module (312); the shell (311) is provided with a port electrically connected to the battery cell (100); the electric control module (312) is arranged in the shell (311) and electrically connected to the port; A connector (320) is used to be inserted into the box (200); the connector (320) has a first end (e1) located inside the box (200) and a second end (e2) exposed outside the box (200); and A conductive member (330), comprising a first portion (P1), a second portion (P2), and a third portion (P3) electrically connected between the first portion (P1) and the second portion (P2); the first portion (P1) is electrically connected to the electric control module (312), and the second portion (P2) is electrically connected to the first end portion (e1); The first part (P1) is located inside the shell (311) and connected to the shell (311), the second part (P2) is located outside the shell (311), and at least part of the third part (P3) is located outside the shell (311); among the first part (P1), the second part (P2) and the third part (P3), at least the third part (P3) is configured to be capable of deformation; The shell (311) comprises a shell body (311a) and a mounting portion (311b) disposed in the shell body (311a), wherein the mounting portion (311b) is connected to the shell body (311a); at least part of the first portion (P1) is covered on the mounting portion (311b) and is connected to the mounting portion (311b).

19. An electrical equipment, characterized in that: It comprises the battery device (10) according to any one of claims 1 to 17; or, it comprises the electric control component (300) according to claim 18.

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