Battery device and electric device

Abstract

The utility model provides a battery device and a power utilization device, the battery device comprises a box body, a battery monomer, an isolation assembly and an information acquisition element, the box body is provided with a containing cavity, the battery monomer is contained in the containing cavity, the isolation assembly is arranged in the containing cavity, the isolation assembly comprises a seat body and a cover body, the seat body comprises a seat body and a clamping part, and the clamping part is arranged on the seat body. The cover body covers one side of the seat body along the first direction, the cover body and the seat body define an accommodating space, the clamping part is connected to one side of the seat body along the first direction, and the cover body is clamped between the clamping part and the seat body. And the information acquisition element is accommodated in the accommodating space, is clamped between the cover body and the seat body, and is used for acquiring working information of the single batteries. The battery device provided by the utility model is beneficial to improving the structural stability of the information acquisition element, so that the reliability of the battery device is improved.

Description

Technical Field

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

[0002] Battery devices are widely used in electronic devices, such as mobile phones, laptop computers, battery cars, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and electric tools, etc.

[0003] In the development of battery device technology, in addition to improving the performance of the battery device, the reliability of the battery device is also an issue that needs to be considered. Therefore, how to improve the reliability of the battery device is an issue of continuous improvement in battery device technology. Utility Model Content

[0004] The present application provides a battery device and an electrical device to improve the reliability of the battery device.

[0005] This application is achieved through the following technical solutions:

[0006] In the first aspect, the battery device provided by the embodiment of the present application includes a box body, a battery cell, an isolation component and an information collection element. The box body has a receiving cavity, the battery cell is received in the receiving cavity, the isolation component is arranged in the receiving cavity, the isolation component includes a seat body and a cover body, the seat body includes a seat body and a clamping part, the cover body is arranged on one side of the seat body along the first direction, the cover body and the seat body are arranged to form a receiving space, the clamping part is connected to one side of the seat body along the first direction, and the cover body is clamped between the clamping part and the seat body. The information collection element is received in the receiving space and is clamped between the cover body and the seat body, and the information collection element is used to collect the working information of the battery cell.

[0007] The battery device provided in the embodiment of the present application is provided with an isolation component including a seat body and a cover body, and the seat body is provided with a seat body including a seat body and a clamping portion, and the cover body is clamped between the clamping portion and the seat body along a first direction. In this way, the cover body is clamped and limited along the first direction by the clamping portion and the seat body, thereby reducing the risk of the cover body not being able to be clamped into place with the seat body along the first direction, and improving the stability and reliability of the clamping force of the cover body and the seat body on the information acquisition element, so as to improve the structural stability of the information acquisition element in the accommodating space, improve the reliability of the information acquisition element in collecting information, and thus improve the reliability of the battery device. The information acquisition element does not need an additional structure to be positioned and connected with the isolation component, which is conducive to simplifying the overall structure of the battery device.

[0008] According to some embodiments of the present application, the clamping portion and the seat body are integrally formed.

[0009] In the above scheme, by setting the clamping part and the seat body to be integrally formed, the structure of the battery device is simplified, the process difficulty during the assembly of the battery device is reduced, and it is convenient to control the size of the clamping part and the distance between the clamping part and the seat body, so as to improve the limiting effect of the clamping part and the seat body on the cover body, so that the cover body and the seat body have a good limiting effect on the information collection element.

[0010] According to some embodiments of the present application, there is a slot between the clamping portion and the seat body, the cover body is clamped in the slot, the cover body passes through the slot along the second direction, and the first direction intersects the second direction.

[0011] In the above scheme, by arranging the cover body to pass through the card slot along the second direction, it is helpful to simplify the installation process of the cover body and the seat body, and to further reduce the risk of the cover body and the seat body not being properly installed along the first direction, thereby reducing the risk of the information collection element shaking in the accommodating space.

[0012] According to some embodiments of the present application, the isolation assembly includes at least two clamping parts, which are arranged on both sides of the seat body along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other. The cover body is clamped between the at least two clamping parts on both sides along the third direction.

[0013] In the above scheme, the two sides of the cover body along the third direction are arranged between at least two clamping parts, so as to provide limiting and guiding functions for the cover body through at least two clamping parts, so as to facilitate the cover body to pass through the clamping slot, and to help improve the smoothness of the cover body moving along the third direction in the clamping slot, so as to facilitate the assembly of the cover body.

[0014] According to some embodiments of the present application, the seat body has a first sliding portion, the cover body has a second sliding portion, and the second sliding portion is configured to be able to slide along a second direction relative to the first sliding portion.

[0015] In the above scheme, during the cooperation between the cover body and the seat body, the cooperation between the first sliding part and the second sliding part is conducive to improving the smoothness of the sliding of the cover body relative to the seat body, and facilitates the first sliding part to provide a guiding effect for the second sliding part, further improving the convenience of assembly of the cover body and the seat body.

[0016] According to some embodiments of the present application, the first sliding portion includes a stopper, the stopper is protruding toward the cover body along the first direction, the stopper has a first side and a second side, and the first side and the second side are respectively arranged on both sides of the stopper along the second direction. The second sliding portion includes a first elastic locking portion, the first elastic locking portion is protruding toward the seat body along the first direction, and is configured to be able to slide from the first side to the second side relative to the stopper, and the stopper is configured to be able to prevent the first elastic locking portion from moving from the second side to the first side.

[0017] In the above scheme, by setting the first sliding part to include a stop part, and the second sliding part to include a first elastic locking part, the cooperation between the stop part and the first elastic locking part can provide a certain restriction for the movement of the cover body in the direction of separation from the seat body along the second direction, thereby reducing the risk of the cover body moving in the opposite direction and separating from the seat body after being installed in place along the second direction, which is beneficial to further improve the reliability of the installation of the cover body and the seat body, and then improve the structural stability of the information acquisition element in the accommodating space.

[0018] According to some embodiments of the present application, the stop portion has a first guide surface, which is disposed on the first side and points from the first side to the second side, and the first guide surface is inclined in a direction away from the seat body.

[0019] In the above solution, by providing the stopper with a first guide surface, a certain guiding effect can be provided for the sliding of the first elastic locking portion relative to the stopper, which is beneficial to improving the smoothness of the assembly of the cover body and the seat body.

[0020] According to some embodiments of the present application, the first elastic locking portion has a first mating surface, the first mating surface is arranged on a side of the first elastic locking portion facing away from the stop portion, and at least a portion of the first mating surface is parallel to the first guide surface.

[0021] In the above scheme, the first guide surface and the first mating surface can cooperate and guide to improve the smoothness of the first elastic locking portion moving from the first side of the stop portion to the second side, which is further beneficial to improve the smoothness of the assembly of the cover body and the seat body.

[0022] According to some embodiments of the present application, the second sliding portion also includes a second elastic locking portion, which is spaced apart from the first elastic locking portion along the second direction, and the second elastic locking portion is configured to be able to slide from the first side to the second side relative to the stop portion, and the stop portion is configured to be able to prevent the second elastic locking portion from moving from the second side to the first side.

[0023] In the above scheme, by setting the second sliding portion to include a first elastic locking portion and a second elastic locking portion, the distance that the cover body moves relative to the cover body along the first direction can be selectively set so that only the first elastic locking portion passes through the stop portion, or both the first elastic locking portion and the second elastic locking portion pass through the stop portion, so as to reduce the risk of the cover body detaching from the seat body along the second direction while facilitating the control of the installation position of the cover body relative to the seat body along the second direction.

[0024] According to some embodiments of the present application, the first sliding portion has a first guide surface, the first guide surface is arranged on the first side, and points from the first side to the second side, and the first guide surface is inclined in a direction away from the seat body. The second elastic locking portion has a second mating surface, the second mating surface is arranged on a side of the first elastic locking portion facing the first elastic locking portion, and at least a portion of the second mating surface is parallel to the first guide surface.

[0025] In the above scheme, the first guide surface and the second mating surface can cooperate and guide to improve the smoothness of the second elastic locking portion moving from the first side of the stop portion to the second side, which is further beneficial to improve the smoothness of the assembly of the cover body and the seat body.

[0026] According to some embodiments of the present application, the seat body has a first wall, the first wall intersects with the cover body, the first wall has a limiting opening, and the limiting opening is arranged through the first wall along the second direction. A part of the cover body is arranged in the limiting opening, so that the first wall is configured to limit the displacement of the cover body along the first direction.

[0027] In the above scheme, after the cover body and the seat body are installed in place, the first wall and the clamping part jointly provide a limiting effect for the movement of the cover body along the first direction, which is beneficial to further reduce the risk of the cover body moving relative to the seat body along the first direction, thereby reducing the risk of the information collection element shaking in the accommodating space.

[0028] According to some embodiments of the present application, the information collection element includes a temperature sensor.

[0029] In the above scheme, the temperature sensor can collect the temperature information of the battery cell. The temperature sensor is clamped between the cover body and the base body to improve the tightness of the temperature sensor and the battery cell, thereby improving the efficiency of heat transfer from the battery cell to the temperature sensor, which is beneficial to improving the accuracy of the temperature of the battery cell measured by the temperature sensor, and further beneficial to improving the reliability of the battery device.

[0030] According to some embodiments of the present application, the battery device further includes an elastic thermally conductive pad, which is clamped on a side of the temperature sensor facing away from the cover.

[0031] In the above scheme, by providing an elastic thermal pad and clamping the elastic thermal pad on the side of the temperature sensor facing away from the cover, it is beneficial to improve the structural stability of the temperature sensor, reduce the risk of the temperature sensor shaking in the accommodation space, and improve the heat conduction efficiency between the battery cell and the temperature sensor, so as to improve the accuracy of the temperature measured by the temperature sensor, which is beneficial to further improve the reliability of the battery device.

[0032] According to some embodiments of the present application, the battery device further includes a flexible conductive member, which is electrically connected to the information collection element. The flexible conductive member passes through the cover body and is clamped on a side of the information collection element facing away from the cover body.

[0033] In the above scheme, a clamping portion is provided, and a cover body is provided to be clamped between the clamping portion and the seat body. The cover body cooperates with the seat body along the first direction to provide a clamping force along the first direction for the flexible conductive member, which is beneficial to reducing the risk of the flexible conductive member warping and loosening relative to the information acquisition element, improving the structural stability of the flexible conductive member, and further improving the reliability of the electrical connection between the flexible conductive member and the information acquisition element, which is beneficial to improving the reliability performance of the battery device.

[0034] According to some embodiments of the present application, the cover body has a rough portion, and the rough portion is arranged on a surface of the cover body facing away from the accommodating space.

[0035] In the above solution, the rough part can increase the friction force of the operator on the cover body, making it easier to assemble or disassemble the cover body.

[0036] In a second aspect, the electrical device provided in the embodiments of the present application includes the battery device provided in any of the above embodiments.

[0037] The electric device provided in the embodiment of the present application has the same technical effect as the battery device provided in the above embodiment, and thus will not be described in detail here.

[0038] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application;

[0041] Figure 2 A schematic diagram of the structure of a battery device provided in an embodiment of the present application;

[0042] Figure 3 A schematic diagram of the structure of a battery module in a battery device provided in an embodiment of the present application;

[0043] Figure 4A schematic diagram of the explosion structure of a battery cell in a battery device provided in an embodiment of the present application;

[0044] Figure 5 An exploded structural diagram of a portion of the structure of a battery device provided in an embodiment of the present application;

[0045] Figure 6 for Figure 5 A partial enlarged view of the middle A;

[0046] Figure 7 An enlarged structural schematic diagram of a local structure of a battery device provided in an embodiment of the present application;

[0047] Figure 8 A top view of a portion of the structure of a battery device provided in an embodiment of the present application;

[0048] Fig. 9 for Figure 8 Schematic diagram of the cross-sectional structure along BB;

[0049] Fig.10 for Fig. 9 A partial enlarged view of point C in the middle.

[0050] In the drawings, the figures are not necessarily drawn to scale.

[0051] Description of reference numerals:

[0052] 1-Vehicle; 1a-Motor; 1b-Controller;

[0053] 10-battery device; 11-box; 11a-accommodation cavity; 111-first sub-box; 112-second sub-box;

[0054] 20-battery module;

[0055] 30 - battery cell; 31 - shell; 311 - housing; 312 - end cap; 32 - electrode assembly; 321 - electrode body; 322 - pole ear; 33 - electrode terminal;

[0056] 40-isolating assembly; 40a-accommodating space; 41-seat body; 41a-card slot; 411-seat body; 412-card connection portion; 413-first sliding portion; 4131-stop portion; 4131a-first side; 4131b-second side; 413a-first guide surface; 42-cover body; 42a-rough portion; 421-second sliding portion; 4211-first elastic locking portion; 4212-second elastic locking portion; 421a-first matching surface; 421b-second matching surface; 43-first wall; 43a-limiting opening;

[0057] 50-information collection element; 51-temperature sensor;

[0058] 60-flexible conductive member;

[0059] X-first direction; Y-second direction; Z-third direction. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0061] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application 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 drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0062] Reference to "embodiments" in this application 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 in this application may be combined with other embodiments.

[0063] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0064] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can 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 application generally indicates that the associated objects before and after are in an "or" relationship.

[0065] The term "multiple" as used in the present application refers to more than two (including two). Similarly, the term "multiple groups" refers to more than two groups (including two groups), and the term "multiple sheets" refers to more than two sheets (including two sheets).

[0066] The battery apparatus mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells, which are connected in series, in parallel or in mixed connection through a busbar component.

[0067] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells; as an example, a battery cell assembly may be a battery module, and a battery module is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, a battery module may be formed by bundling a plurality of battery cells by a cable tie.

[0068] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0069] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0070] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0071] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0072] In some embodiments, the battery device may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0073] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0074] The battery cells may be, but are not limited to, lithium ion batteries, sodium ion batteries, sodium lithium ion batteries, lithium metal batteries, sodium metal batteries, lithium sulfur batteries, magnesium ion batteries, nickel hydrogen batteries, nickel cadmium batteries, lead storage batteries, etc.

[0075] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, a polygonal prismatic battery, such as a hexagonal prismatic battery, etc. There is no particular limitation in the embodiments of the present application.

[0076] In a battery device, it is usually necessary to set an information collection element on the isolation component to collect information such as the temperature, current or voltage of the battery cell. The information collection element usually needs to be fixed on the isolation component to maintain the structural stability of the information collection element and improve the reliability and accuracy of the collected information. In the related art, the isolation component is usually provided to include a base and a cover, and the cover is provided to cover the base, so that the cover and the base provide protection for the information collection element, and the cover and the base cooperate to limit the information collection element such as NTC (Negative Temperture Coefficient, temperature sensor), so as to improve the structural stability of the information collection element.

[0077] However, in the process of closing the cover on the base, there is a problem that the cover and the base are not properly closed, or, after the cover is closed on the base, there is still a risk that the cover will partially fall off. In this way, there is a risk that the positioning of the information acquisition element is unreliable and the information acquisition element is prone to loosening, which seriously affects the accuracy of information collected by the information acquisition element and further affects the reliability of the battery cell.

[0078] In view of this, the embodiment of the present application provides a battery device including a box, a battery cell, an isolation component and an information collection element. The box has a receiving cavity, the battery cell is received in the receiving cavity, the isolation component is arranged in the receiving cavity, the isolation component includes a seat and a cover, the seat includes a seat body and a clamping part, the cover is arranged on one side of the seat body along a first direction, the cover and the seat body are arranged to form a receiving space, the clamping part is connected to one side of the seat body along the first direction, and the cover is clamped between the clamping part and the seat body. The information collection element is received in the receiving space and clamped between the cover and the seat body, and the information collection element is used to collect the working information of the battery cell.

[0079] The battery device provided in the embodiment of the present application is provided with an isolation component including a seat body and a cover body, and the seat body is provided with a seat body including a seat body and a clamping portion, and the cover body is clamped between the clamping portion and the seat body along a first direction. In this way, the cover body is clamped and limited along the first direction by the clamping portion and the seat body, thereby reducing the risk of the cover body not being able to be clamped into place with the seat body along the first direction, and improving the stability and reliability of the clamping force of the cover body and the seat body on the information acquisition element, so as to improve the structural stability of the information acquisition element in the accommodating space, improve the reliability of the information acquisition element in collecting information, and thus improve the reliability of the battery device. The information acquisition element does not need an additional structure to be positioned and connected with the isolation component, which is conducive to simplifying the overall structure of the battery device.

[0080] The technical solutions described in the embodiments of the present application are applicable to battery devices and electrical devices using the battery devices.

[0081] The battery device disclosed in the embodiment of the present application can be used in, but not limited to, electrical devices such as vehicles, ships, or aircraft. The battery device disclosed in the present application can be used to form a power supply system of the electrical device.

[0082] The embodiment of the present application provides an electric device using a battery device as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet computer, a laptop computer, an electric toy, an electric tool, an electric bicycle, an electric motorcycle, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may 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 may include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0083] For the convenience of description, the following embodiments are described by taking a vehicle 1 as an example of an electrical device in an embodiment of the present application.

[0084] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1 provided in an embodiment of the present application. The vehicle 1 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 10 is provided inside the vehicle 1, and the battery device 10 may be provided at the bottom, head or tail of the vehicle 1. The battery device 10 may be used to power the vehicle 1, for example, the battery device 10 may be used as an operating power source for the vehicle 1, for the circuit system of the vehicle 1, for example, for the working power requirements during the startup, navigation and operation of the vehicle 1.

[0085] The vehicle 1 may further include a controller 1b and a motor 1a, wherein the controller 1b is used to control the battery device 10 to supply power to the motor 1a, for example, to meet the power requirements of starting, navigating, and driving the vehicle 1.

[0086] 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 .

[0087] Please refer to Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the structure of the battery device 10 provided in an embodiment of the present application. Figure 3 The schematic diagram of the structure of the battery cell 30 in the battery device 10 provided in the embodiment of the present application. The battery device 10 includes a box 11 and a battery cell 30, and the battery cell 30 is accommodated in the box 11. Among them, the box 11 is used to provide space for the battery cell 30, and the box 11 can adopt a variety of structures. In some embodiments, the box 11 may include a first sub-box 111 and a second sub-box 112, and the first sub-box 111 and the second sub-box 112 cover each other, and the first sub-box 111 and the second sub-box 112 jointly define a space for accommodating the battery cell 30. The second sub-box 112 may be a hollow structure with one end open, and the first sub-box 111 may be a plate-like structure. The first sub-box 111 covers the open side of the second sub-box 112, so that the first sub-box 111 and the second sub-box 112 jointly define a space for accommodating the battery cell 30. The first sub-box 111 and the second sub-box 112 may also be hollow structures both with one side open, and the open side of the first sub-box 111 covers the open side of the second sub-box 112.

[0088] In the battery device 10, there may be multiple battery cells 30, and the multiple battery cells 30 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 30 are both connected in series and in parallel. The multiple battery cells 30 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 30 is accommodated in the box 11; of course, the battery device 10 may also be a battery module 20 in the form of multiple battery cells 30 connected in series, in parallel, or in a mixed connection, and then the multiple battery modules 20 are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 11. The battery device 10 may also include other structures, for example, the battery device 10 may also include a busbar component for realizing electrical connection between the multiple battery cells 30.

[0089] The battery cell 30 may be a secondary battery or a primary battery; the battery cell 30 may also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto.

[0090] Please refer to Figure 4 , Figure 4 Schematic diagram of the exploded structure of the battery cell 30 in the battery device 10 provided in the embodiment of the present application. Figure 4As shown, the battery cell 30 includes a housing 31, an electrode assembly 32 and an electrode terminal 33. The housing 31 includes a shell 311 and an end cap 312. The shell 311 has an opening, and the end cap 312 closes the opening to isolate the internal environment of the battery cell 30 from the external environment.

[0091] The shell 311 is a component used to cooperate with the end cap 312 to form the internal environment of the battery cell 30, wherein the formed internal environment can be used to accommodate the electrode assembly 32, the electrolyte and other components. The shell 311 and the end cap 312 can be independent components. The shell 311 can be of various shapes and sizes. Specifically, the shape of the shell 311 can be determined according to the specific shape and size of the electrode assembly 32. The material of the shell 311 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0092] The end cap 312 refers to a component that covers the opening of the shell 311 to isolate the internal environment of the battery cell 30 from the external environment. Without limitation, the shape of the end cap 312 can be adapted to the shape of the shell 311 to match the shell 311. Optionally, the end cap 312 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap 312 is not easily deformed when squeezed and collided, so that the battery cell 30 can have a higher structural strength and reliability can also be improved. Functional components such as electrode terminals 33 can be provided on the end cap 312. The electrode terminal 33 can be used to electrically connect to the electrode assembly 32 for outputting or inputting electrical energy of the battery cell 30. The material of the end cap 312 can also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not impose any special restrictions on this. In some embodiments, an insulating structure may be provided inside the end cap 312, and the insulating structure may be used to isolate the electrical connection components in the housing 311 from the end cap 312 to reduce the risk of short circuit. For example, the insulating structure may be plastic, rubber, or the like.

[0093] The electrode assembly 32 is a component in the battery cell 30 where an electrochemical reaction occurs. One or more electrode assemblies 32 may be included in the housing 311. The electrode assembly 32 is mainly formed by winding or stacking the positive electrode sheet and the negative electrode sheet, and a separator is usually provided between the positive electrode sheet and the negative electrode sheet, and the separator is used to separate the positive electrode sheet and the negative electrode sheet to avoid short circuits between the positive electrode sheet and the negative electrode sheet. The parts of the positive electrode sheet and the negative electrode sheet with active materials constitute the electrode body 321 of the electrode assembly 32, and the parts of the positive electrode sheet and the negative electrode sheet without active materials each constitute the tabs 322. The positive tab and the negative tab may be located together at one end of the electrode body 321 or at both ends of the electrode body 321, respectively. During the charge and discharge process of the battery cell 30, the positive active material and the negative active material react with the electrolyte, and the tabs 322 are connected to the electrode terminals 33 to form a current loop.

[0094] First, as Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the embodiment of the present application provides a battery device 10 including a box body 11, a battery cell 30, an isolation assembly 40 and an information collection element 50. The box body 11 has a receiving cavity 11a. The battery cell 30 is received in the receiving cavity 11a. The isolation assembly 40 is disposed in the receiving cavity 11a. The isolation assembly 40 includes a seat body 41 and a cover body 42. The seat body 41 includes a seat body 411 and a clamping portion 412. The cover body 42 is disposed on one side of the seat body 411 along the first direction X. The cover body 42 and the seat body 411 are surrounded to form a receiving space 40a. The clamping portion 412 is connected to one side of the seat body 411 along the first direction X. The cover body 42 is clamped between the clamping portion 412 and the seat body 411. The information collection element 50 is received in the receiving space 40a and sandwiched between the cover body 42 and the seat body 411. The information collection element 50 is used to collect the working information of the battery cell 30.

[0095] The battery device 10 may further include a flexible conductive member 60, such as a flexible circuit board or a flexible wiring harness. The flexible conductive member 60 may be electrically connected to the information acquisition element 50 and used to collect information such as the temperature, pressure, voltage or current of the battery cell 30, so that the battery management system can control the normal operation of the battery device 10.

[0096] The information acquisition element 50 may be a temperature sensor 51 , a voltage sensor, a current sensor, a strain sensor or a stress sensor, etc., so as to acquire information such as temperature, voltage, current, strain or stress of the battery cell 30 through the information acquisition element 50 .

[0097] The isolation component 40 is disposed in the accommodating cavity 11a and can be disposed on one side of the battery cell 30 to isolate the flexible conductive member 60 and the information collection element 50 from the battery cell 30, thereby reducing the risk of short circuit or information interference between different components.

[0098] The isolation assembly 40 includes a seat body 41 and a cover body 42. The seat body 41 includes a seat body 411 and a clamping portion 412. Optionally, the seat body 411 and the clamping portion 412 can be molded separately and then connected together, or the seat body 41 and the clamping portion 412 can be integrally molded.

[0099] According to different connection methods between the seat body 411 and the clamping portion 412 , the covering method of the cover body 42 and the seat body 411 is also different.

[0100] Exemplarily, in an embodiment in which the seat body 411 and the snap-on portion 412 are integrally formed, the cover body 42 can be slid from the side of the snap-on portion 412 into between the snap-on portion 412 and the seat body 411, and by controlling the position and size of the snap-on portion 412, the position of the cover body 42 and its tightness of fit with the seat body 411 can be controlled.

[0101] In the case where the seat body 411 and the clamping portion 412 are connected separately, the cover body 42 can be first covered on the seat body 411 along the first direction X, and then the clamping portion 412 can be connected to the seat body 411, and the cover body 42 can be clamped between the clamping portion 412 and the seat body 411. The clamping portion 412 can be connected to the seat body 411 by clamping or threaded connection. The position of the cover body 42 and its tightness of fit with the seat body 411 are controlled by the cooperation between the clamping portion 412 and the seat body 411.

[0102] The information collection element 50 is accommodated in the accommodation space 40a, and the information collection element 50 can be pressed between the cover body 42 and the seat body 411, so that the information collection element 50 can be provided with a certain limit effect through the cooperation of the cover body 42 and the seat body 411 along the first direction X, thereby reducing the risk of welding slag and the like entering the accommodation space 40a and damaging or interfering with the information collection element 50. In addition, the cover body 42 can increase the electrical clearance between the information collection element 50 and other components, thereby reducing the risk of mutual interference between different components or insulation failure within related circuits.

[0103] The cover body 42 is clamped between the seat body 411 and the clamping portion 412, and the clamping portion 412 can provide a certain limiting effect on the movement of the cover body 42 along the first direction X, so as to improve the tightness of the cover body 42 and the seat body 411 with the information collection element 50 respectively, so that the cover body 42 and the seat body 411 can provide a certain pressure for the information collection element 50 along the first direction X, thereby reducing the risk of shaking of the information collection element 50 along the first direction X.

[0104] The information acquisition element 50 is clamped between the cover body 42 and the seat body 411, and the cover body 42 and the seat body 411 can provide a certain clamping force for the information acquisition element 50 along the first direction X to reduce the risk of shaking of the information acquisition element 50 in the accommodating space 40a, and provide a good positioning effect for the information acquisition element 50 in the accommodating space 40a, without the need to position and connect the information acquisition element 50 and the isolation component 40 through bonding or threaded connection, which is beneficial to simplify the overall structure of the battery device 10.

[0105] In addition, in the event of a failure of the information collection element 50 , the information collection element 50 can be repaired or replaced by removing the cover 42 , which reduces maintenance costs and facilitates replacement or maintenance of the information collection element 50 .

[0106] The battery device 10 provided in the embodiment of the present application is provided with an isolation component 40 including a seat body 41 and a cover body 42, and the seat body 41 is provided with a seat body 41 including a seat body 411 and a clamping portion 412, and the cover body 42 is clamped between the clamping portion 412 and the seat body 411 along the first direction X. In this way, the cover body 42 is clamped and limited along the first direction X by the clamping portion 412 and the seat body 411, thereby reducing the risk of the cover body 42 not being properly clamped with the seat body 411 along the first direction X, and improving the stability and reliability of the clamping force of the cover body 42 and the seat body 411 on the information acquisition element 50, so as to improve the structural stability of the information acquisition element 50 in the accommodating space 40a, improve the reliability of the information acquisition element 50 in collecting information, and thus improve the reliability of the battery device 10, and the information acquisition element 50 does not need an additional structure to be positioned and connected with the isolation component 40, which is conducive to simplifying the overall structure of the battery device 10.

[0107] In some embodiments, the clamping portion 412 and the seat body 411 are integrally formed.

[0108] The clamping portion 412 and the seat body 411 are integrally formed, and the cover body 42 can be pushed between the clamping portion 412 and the seat body 411 along a direction intersecting the first direction X so that the cover body 42 is clamped between the cover body 42 and the seat body 411 .

[0109] The clamping portion 412 and the seat body 411 are integrally formed, so that the processing of the clamping portion 412 and the seat body 411 is convenient, and the tightness of the fit between the cover body 42 and the seat body 411 is controlled by controlling the size of the space between the clamping portion 412 and the seat body 411, so that the clamping portion 412 and the seat body 411 have good positioning and limiting effects on the cover body 42.

[0110] Therefore, by forming the clamping portion 412 and the seat body 411 as an integral unit, the structure of the battery device 10 is simplified, the process difficulty during the assembly of the battery device 10 is reduced, and it is convenient to control the size of the clamping portion 412 and the distance between the clamping portion 412 and the seat body 411, so as to improve the limiting effect of the clamping portion 412 and the seat body 411 on the cover body 42, so that the cover body 42 and the seat body 411 have a good limiting effect on the information collection element 50.

[0111] In some embodiments, a slot 41a is formed between the engaging portion 412 and the seat body 411, and the cover 42 is engaged in the slot 41a. The cover 42 passes through the slot 41a along the second direction Y, and the first direction X and the second direction Y intersect.

[0112] The first direction X intersects with the second direction Y. Exemplarily, the first direction X and the second direction Y are perpendicular to each other.

[0113] The clamping portion 412 is provided on one side of the seat body 411 along the first direction X, and the cover body 42 is clamped between the clamping portion 412 and the seat body 411 along the first direction X, and the cover body 42 is penetrated in the clamping groove 41a along the second direction Y. During the assembly of the cover body 42, the cover body 42 can be pushed into the clamping groove 41a along the second direction Y without additionally limiting or installing the cover body 42 along the first direction X. By controlling the position and size of the clamping groove 41a, the position accuracy of the cover body 42 and the seat body 411 along the first direction X can be controlled, so as to more accurately achieve the stability of the cover body 42 and the seat body 411 clamping the information acquisition element 50.

[0114] Therefore, by setting the cover body 42 to pass through the card slot 41a along the second direction Y, it is helpful to simplify the installation process of the cover body 42 and the seat body 411, and it is helpful to further reduce the risk of the cover body 42 and the seat body 411 not being properly installed along the first direction X, thereby reducing the risk of the information collection element 50 shaking in the accommodating space 40a.

[0115] Optionally, the isolation assembly 40 may have one, two or more clamping parts 412, and different clamping parts 412 may be arranged at intervals along the second direction Y or other directions, and may be selected according to actual needs.

[0116] In some embodiments, Figure 5 , Figure 6 and Figure 7 As shown, the isolation assembly 40 includes at least two clamping parts 412, which are arranged on both sides of the seat body 411 along the third direction Z. The first direction X, the second direction Y and the third direction Z are perpendicular to each other. The cover body 42 is clamped between the at least two clamping parts 412 on both sides along the third direction Z.

[0117] At least two clamping parts 412 are arranged on both sides of the seat body 411 along the third direction Z, and at least two clamping parts 412 are respectively arranged on both sides of the cover body 42 along the third direction Z. The cover body 42 can be limited and positioned along the third direction Z by at least two clamping parts 412.

[0118] The openings of the slot 41a corresponding to the snap-in parts 412 on both sides of the seat body 411 along the third direction Z are relatively arranged so that both sides of the cover body 42 can enter the slot 41a and move along the snap-in parts 412 on both sides in the slot 41a. The snap-in parts 412 on both sides of the cover body 42 along the third direction Z can provide a guiding effect for the sliding of the cover body 42 relative to the seat body 411 along the second direction Y, so as to facilitate the installation of the cover body 42.

[0119] Therefore, the cover body 42 is arranged to be clamped between at least two clamping parts 412 on both sides along the third direction Z, so as to provide limiting and guiding functions for the cover body 42 through at least two clamping parts 412, so as to facilitate the cover body 42 to pass through the clamping slot 41a, and to help improve the smoothness of the movement of the cover body 42 in the clamping slot 41a along the third direction Z, so as to facilitate the assembly of the cover body 42.

[0120] In some embodiments, Figure 8 and Fig. 9 As shown, the seat body 411 has a first sliding portion 413 , and the cover body 42 has a second sliding portion 421 . The second sliding portion 421 is configured to be able to slide along the second direction Y relative to the first sliding portion 413 .

[0121] Optionally, the first sliding portion 413 may be straight, and correspondingly, the second sliding portion 421 may be straight; or, a related limiting or guiding structure may be provided on the first sliding portion 413, so that the second sliding portion 421 can move relative to the first sliding portion 413 along the second direction Y, and after the second sliding portion 421 is installed in place, the second sliding portion 421 is limited. Similarly, a structure cooperating with the related limiting or guiding mechanism may also be provided on the second sliding portion 421.

[0122] The second sliding portion 421 is configured to be able to slide along the second direction Y relative to the first sliding portion 413. Therefore, during the process of installing the cover body 42 on the seat body 411, the second sliding portion 421 can be set to slide along the second direction Y relative to the first sliding portion 413. The cooperation between the first sliding portion 413 and the second sliding portion 421 can guide the cover body 42 to slide along the second direction Y and improve the smoothness of the sliding of the cover body 42 along the second direction Y.

[0123] Therefore, in the process of cooperation between the cover body 42 and the seat body 411, the cooperation between the first sliding part 413 and the second sliding part 421 is beneficial to improving the smoothness of sliding of the cover body 42 relative to the seat body 411, and is convenient for providing a guiding effect for the second sliding part 421 through the first sliding part 413, thereby further improving the convenience of assembly of the cover body 42 and the seat body 411.

[0124] In some embodiments, Figure 8 , Fig. 9 and Fig.10As shown, the first sliding portion 413 includes a stopper 4131, which is protruded toward the cover body 42 along the first direction X, and has a first side 4131a and a second side 4131b, which are respectively arranged on both sides of the stopper 4131 along the second direction Y. The second sliding portion 421 includes a first elastic locking portion 4211, which is protruded toward the seat body 411 along the first direction X and is configured to be able to slide from the first side 4131a to the second side 4131b relative to the stopper 4131, and the stopper 4131 is configured to prevent the first elastic locking portion 4211 from moving from the second side 4131b to the first side 4131a.

[0125] During the process of assembling the cover body 42 and the seat body 411, the cover body 42 can be slid along the second direction Y, wherein the first elastic locking portion 4211 slides along the first direction X. When the first elastic locking portion 4211 slides along the first direction X until it contacts the first side 4131a of the stop portion 4131, the first elastic locking portion 4211 can continue to move along the stop portion 4131 through its own deformation until the first elastic locking portion 4211 moves from the first side 4131a of the stop portion 4131 to the second side 4131b.

[0126] Once the first elastic locking portion 4211 moves to the second side 4131b, the stop portion 4131 will prevent the first elastic locking portion 4211 from returning from the second side 4131b to the first side 4131a. The stop portion 4131 can provide a certain limiting effect for the reverse movement of the cover body 42 along the second direction Y, so as to limit the risk of the cover body 42 moving in the reverse direction Y and separating from the seat body 411 after being installed in place.

[0127] Therefore, by setting the first sliding portion 413 to include a stop portion 4131 and the second sliding portion 421 to include a first elastic locking portion 4211, the stop portion 4131 can cooperate with the first elastic locking portion 4211 to provide a certain restriction on the movement of the cover body 42 in the direction of separation from the seat body 411 along the second direction Y, thereby reducing the risk of the cover body 42 moving in the opposite direction and separating from the seat body 411 after being installed in place along the second direction Y, which is beneficial to further improve the reliability of the installation of the cover body 42 and the seat body 411, and further improve the structural stability of the information acquisition element 50 in the accommodating space 40a.

[0128] In some embodiments, Figure 8 , Fig. 9 and Fig.10As shown, the stopper 4131 has a first guide surface 413a, which is disposed on the first side 4131a and points from the first side 4131a to the second side 4131b. The first guide surface 413a is tilted toward a direction away from the seat body 411.

[0129] The first guide surface 413a is arranged on the first side 4131a, and points from the first side 4131a to the direction of the second side 4131b. The first guide surface 413a is inclined in the direction away from the seat body 411. In the process of assembling the cover body 42 and the seat body 411, the first elastic locking portion 4211 moves along the second direction Y, first contacts with the first guide surface 413a of the stop portion 4131, and slides along the first guide surface 413a. The deformation of the first elastic locking portion 4211 gradually increases until the first elastic locking portion 4211 slides to the second side 4131b of the stop portion 4131.

[0130] Therefore, by providing the stop portion 4131 with a first guide surface 413a, a certain guiding effect can be provided for the sliding of the first elastic locking portion 4211 relative to the stop portion 4131, which is beneficial to improving the smoothness of the assembly of the cover body 42 and the seat body 411.

[0131] In some embodiments, Figure 8 , Fig. 9 and Fig.10 As shown, the first elastic locking portion 4211 has a first matching surface 421a, which is arranged on a side of the first elastic locking portion 4211 facing away from the stop portion 4131, and at least a portion of the first matching surface 421a is parallel to the first guide surface 413a.

[0132] Optionally, a portion of the first mating surface 421 a may be arranged to be parallel to the first guide surface 413 a , or the entire first mating surface 421 a may be arranged to be parallel to the first guide surface 413 a .

[0133] During the process of assembling the cover body 42 and the seat body 411, the cover body 42 moves along the second direction Y relative to the seat body 411, and the first elastic locking portion 4211 first cooperates with the first guide surface 413a of the stop portion 4131 through the first mating surface 421a. The first guide surface 413a can provide guidance for the movement of the first elastic locking portion 4211.

[0134] In this way, the first guide surface 413a and the first mating surface 421a can cooperate and guide to improve the smoothness of the first elastic locking portion 4211 moving from the first side 4131a of the stop portion 4131 to the second side 4131b, which is further beneficial to improve the smoothness of the assembly of the cover body 42 and the seat body 411.

[0135] In some embodiments, Figure 8 , Fig. 9 and Fig.10 As shown, the second sliding portion 421 also includes a second elastic locking portion 4212, and the second elastic locking portion 4212 is spaced apart from the first elastic locking portion 4211 along the second direction Y, and the second elastic locking portion 4212 is configured to be able to slide from the first side 4131a to the second side 4131b relative to the stop portion 4131, and the stop portion 4131 is configured to be able to prevent the second elastic locking portion 4212 from moving from the second side 4131b to the first side 4131a.

[0136] The second elastic locking portion 4212 is spaced apart from the first elastic locking portion 4211 along the second direction Y. In the process of the cover body 42 moving relative to the seat body 411 along the first direction X, the first elastic locking portion 4211 may first move from the first side 4131a of the stopper 4131 to the second side 4131b. Then, as the cover body 42 continues to move relative to the seat body 411 along the second direction Y, the second elastic locking portion 4212 also moves relative to the stopper 4131 and moves from the first side 4131a of the stopper 4131 to the second side 4131b, so that the cooperation between the second elastic locking portion 4212 and the stopper 4131 restricts the cover body 42 from moving in the second direction Y, so as to limit the position of the cover body 42 and the seat body 411.

[0137] Therefore, by setting the second sliding portion 421 to include a first elastic locking portion 4211 and a second elastic locking portion 4212, the distance that the cover body 42 moves relative to the cover body 42 along the first direction X can be selectively set so that only the first elastic locking portion 4211 passes through the stop portion 4131, or both the first elastic locking portion 4211 and the second elastic locking portion 4212 pass through the stop portion 4131, so as to reduce the risk of the cover body 42 detaching from the seat body 411 along the second direction Y while facilitating the control of the installation position of the cover body relative to the seat body 411 along the second direction Y.

[0138] In some embodiments, Figure 8 , Fig. 9 and Fig.10 As shown, the first sliding portion 413 has a first guide surface 413a, which is disposed on the first side 4131a and points from the first side 4131a to the second side 4131b, and the first guide surface 413a is inclined in a direction away from the seat body 411. The second elastic locking portion 4212 has a second mating surface 421b, which is disposed on a side of the first elastic locking portion 4211 facing the first elastic locking portion 4211, and at least a portion of the second mating surface 421b is parallel to the first guide surface 413a.

[0139] Optionally, a portion of the second mating surface 421 b may be arranged to be parallel to the first guide surface 413 a , or the entire second mating surface 421 b may be arranged to be parallel to the first guide surface 413 a .

[0140] During the process of assembling the cover body 42 and the seat body 411, the cover body 42 moves along the second direction Y relative to the seat body 411, and the second elastic locking portion 4212 first cooperates with the first guide surface 413a of the stop portion 4131 through the second mating surface 421b. The first guide surface 413a can provide guidance for the movement of the second elastic locking portion 4212.

[0141] In this way, the cooperation and guidance of the first guide surface 413a and the second matching surface 421b can improve the smoothness of the second elastic locking portion 4212 moving from the first side 4131a of the stop portion 4131 to the second side 4131b, which is further beneficial to improve the smoothness of the assembly of the cover body 42 and the seat body 411.

[0142] In some embodiments, Figure 5 and Figure 6 As shown, the seat body 41 has a first wall 43, the first wall 43 intersects with the cover body 42, and the first wall 43 has a limiting opening 43a, and the limiting opening 43a is arranged through the first wall 43 along the second direction Y. A part of the cover body 42 is arranged in the limiting opening 43a, so that the first wall 43 is configured to limit the displacement of the cover body 42 along the first direction X.

[0143] After the cover 42 and the seat body 411 are installed in place, the cover 42 is inserted into the limiting opening 43 a of the first wall 43 , so as to provide a limiting function for the movement of the cover 42 along the first direction X through the first wall 43 .

[0144] Therefore, after the cover body 42 and the seat body 411 are installed in place, the first wall 43 and the clamping portion 412 jointly provide a limiting effect for the movement of the cover body 42 along the first direction X, which is beneficial to further reduce the risk of the cover body 42 moving relative to the seat body 411 along the first direction X, thereby reducing the risk of the information collection element 50 shaking in the accommodating space 40a.

[0145] In some embodiments, the information collecting element 50 includes a temperature sensor 51 .

[0146] Optionally, a through hole may be provided on a side of the seat body 411 facing the battery cell 30 , so as to improve the heat conduction efficiency between the battery cell 30 and the temperature sensor 51 .

[0147] The temperature sensor 51 can collect the temperature information of the battery cell 30. The temperature sensor 51 is clamped between the cover body 42 and the base body 41 to improve the tightness of the temperature sensor 51 and the battery cell 30, thereby improving the efficiency of heat transfer from the battery cell 30 to the temperature sensor 51, which is beneficial to improving the accuracy of the temperature of the battery cell 30 measured by the temperature sensor 51, and further beneficial to improving the reliability of the battery device 10.

[0148] In some embodiments, the battery device 10 further includes an elastic thermal pad, which is clamped on a side of the temperature sensor 51 facing away from the cover 42 .

[0149] Optionally, a through hole may be provided on the side of the seat body 411 facing the battery cell 30 so that at least part of the elastic thermal pad can be directly attached to the battery cell 30 to improve the heat conduction efficiency between the battery cell 30 and the elastic thermal pad.

[0150] The elastic thermal pad may include silicone or rubber, etc. The elastic thermal pad has a certain elasticity and can have good fit with the temperature sensor 51 and the measured part of the battery cell 30, which is beneficial to improve the heat conduction efficiency between the battery cell 30 and the temperature sensor 51, and further helps to improve the accuracy of temperature sensing of the battery cell 30.

[0151] In addition, the elastic thermal pad can adjust the size of its own deformation along the first direction X to offset the dimensional error of the temperature sensor 51 and the like along the first direction X, so that the temperature sensor 51 can be more stably clamped between the cover body 42 and the seat body 411, which is beneficial to further improve the structural stability of the temperature sensor 51.

[0152] Therefore, by providing an elastic thermal pad and clamping the elastic thermal pad on the side of the temperature sensor 51 facing away from the cover body 42, it is beneficial to improve the structural stability of the temperature sensor 51, reduce the risk of the temperature sensor 51 shaking in the accommodating space 40a, and help improve the heat conduction efficiency between the battery cell 30 and the temperature sensor 51, so as to improve the accuracy of the temperature measured by the temperature sensor 51, which is beneficial to further improve the reliability of the battery device 10.

[0153] In some embodiments, Figure 5 , Figure 6 and Figure 7 As shown, the battery device 10 further includes a flexible conductive member 60 , which is electrically connected to the information collection element 50 . The flexible conductive member 60 passes through the cover 42 and is clamped on a side of the information collection element 50 that faces away from the cover 42 .

[0154] The flexible conductive member 60 may be a flexible circuit board or a flexible wiring harness, etc. The flexible conductive member 60 may electrically connect the information acquisition element 50 and the battery management system to realize information interaction between the information acquisition element 50 and the battery management system.

[0155] The flexible conductive member 60 can be passed through the cover 42 along the first direction X, and electrically connected to the side of the information collection element 50 facing away from the cover 42. The flexible conductive member 60 is clamped on the side of the information collection element 50 facing away from the cover 42, and the displacement of the flexible conductive member 60 along the first direction X is limited by the cooperation between the cover 42 and the seat body 411 along the first direction X.

[0156] Therefore, by providing the clamping portion 412 and providing the cover body 42 to be clamped between the clamping portion 412 and the seat body 411, the cover body 42 cooperates with the seat body 411 along the first direction X to provide a clamping force along the first direction X for the flexible conductive member 60, which is beneficial to reduce the risk of the flexible conductive member 60 warping or loosening relative to the information acquisition element 50, improve the structural stability of the flexible conductive member 60, and further improve the reliability of the electrical connection between the flexible conductive member 60 and the information acquisition element 50, which is beneficial to improve the reliability performance of the battery device 10.

[0157] In some embodiments, Figure 5 , Figure 6 and Figure 7 As shown, the cover body 42 has a rough portion 42 a , and the rough portion 42 a is disposed on a surface of the cover body 42 facing away from the accommodating space 40 a .

[0158] Optionally, the rough portion 42 a may be a strip-shaped protrusion, a columnar protrusion, or a pit, etc. The rough portion 42 a can increase the surface roughness of the side of the cover body 42 facing away from the accommodating space 40 a.

[0159] In this way, during the assembly of the cover body 42 and the seat body 411, the cover body 42 can be slid between the clamping portion 412 and the seat body 411 along a direction intersecting the first direction X. The rough portion 42a can increase the friction force of the operator on the cover body 42, thereby facilitating operations such as assembly or disassembly of the cover body 42.

[0160] In a second aspect, the electrical device provided in the embodiments of the present application includes the battery device 10 provided in any of the above embodiments, and the battery device 10 is used to provide electrical energy.

[0161] The electric device provided in the embodiment of the present application has the same technical effect as the battery device 10 provided in any of the above embodiments, and thus will not be described in detail here.

[0162] In some embodiments, Figures 2 to 10As shown, the battery device 10 includes a box body 11, a battery cell 30, an isolation assembly 40 and an information collection element 50. The box body 11 has a receiving cavity 11a. The battery cell 30 and the isolation assembly 40 are received in the receiving cavity 11a. The isolation assembly 40 includes a base body 41 and a cover body 42. The base body 41 includes a base body 411 and a clamping portion 412. The cover body 42 is provided on one side of the base body 411 along the first direction X. The cover body 42 and the base body 411 are surrounded to form a receiving space 40a. The clamping portion 412 is connected to one side of the base body 411 along the first direction X. The clamping portion 412 and the base body 411 are integrally formed. There is a clamping groove 41a between the clamping portion 412 and the base body 411. The cover body 42 is clamped in the clamping groove 41a between the clamping portion 412 and the base body 411. The information collection element 50 is accommodated in the accommodation space 40a and is clamped between the cover body 42 and the seat body 411. The information collection element 50 is used to collect the working information of the battery cell 30. The cover body 42 is arranged in the card slot 41a along the second direction Y, and the first direction X intersects with the second direction Y. The isolation component 40 includes at least two clamping parts 412, and at least two clamping parts 412 are arranged on both sides of the seat body 411 along the third direction Z. The first direction X, the second direction Y and the third direction Z are perpendicular to each other. The cover body 42 is clamped between the at least two clamping parts 412 on both sides along the third direction Z. The seat body 411 has a first sliding part 413, and the cover body 42 has a second sliding part 421. The second sliding part 421 is configured to be able to slide along the second direction Y relative to the first sliding part 413. The first sliding portion 413 includes a stopper 4131, which is protruded toward the cover body 42 along the first direction X, and has a first side 4131a and a second side 4131b, which are respectively arranged on both sides of the stopper 4131 along the second direction Y. The second sliding portion 421 includes a first elastic locking portion 4211 and a second elastic locking portion 4212, the first elastic locking portion 4211 is protruded toward the seat body 411 along the first direction X, and is configured to be able to slide from the first side 4131a to the second side 4131b relative to the stopper 4131, and the stopper 4131 is configured to prevent the first elastic locking portion 4211 from moving from the second side 4131b to the first side 4131a. The stopper 4131 has a first guide surface 413a, which is disposed on the first side 4131a and points from the first side 4131a to the second side 4131b, and the first guide surface 413a is tilted in a direction away from the seat body 411. The first elastic locking portion 4211 has a first mating surface 421a, which is disposed on a side of the first elastic locking portion 4211 facing away from the stopper 4131, and at least a portion of the first mating surface 421a is parallel to the first guide surface 413a.The second sliding portion 421 further includes a second elastic locking portion 4212, which is spaced apart from the first elastic locking portion 4211 along the second direction Y. The second elastic locking portion 4212 is configured to be able to slide from the first side 4131a to the second side 4131b relative to the stopper 4131, and the stopper 4131 is configured to be able to prevent the second elastic locking portion 4212 from moving from the second side 4131b to the first side 4131a. The second elastic locking portion 4212 has a second mating surface 421b, which is provided on the side of the first elastic locking portion 4211 facing the first elastic locking portion 4211, and at least a portion of the second mating surface 421b is parallel to the first guide surface 413a. The seat body 41 has a first wall 43, the first wall 43 intersects with the cover body 42, and the first wall 43 has a limiting opening 43a, and the limiting opening 43a is arranged along the second direction Y through the first wall 43; a part of the cover body 42 is arranged in the limiting opening 43a, so that the first wall 43 is configured to limit the displacement of the cover body 42 along the first direction X. The information collection element 50 includes a temperature sensor 51. The battery device 10 also includes an elastic thermal pad, which is clamped on the side of the temperature sensor 51 facing away from the cover body 42.

[0163] The battery device 10 provided in the embodiment of the present application is provided with an isolation component 40 including a seat body 41 and a cover body 42, and the seat body 41 is provided with a seat body 41 including a seat body 411 and a clamping portion 412, and the cover body 42 is clamped between the clamping portion 412 and the seat body 411 along the first direction X. In this way, the cover body 42 is clamped and limited along the first direction X by the clamping portion 412 and the seat body 411, thereby reducing the risk of the cover body 42 not being properly clamped with the seat body 411 along the first direction X, and improving the stability and reliability of the clamping force of the cover body 42 and the seat body 411 on the information acquisition element 50, so as to improve the structural stability of the information acquisition element 50 in the accommodating space 40a, improve the reliability of the information acquisition element 50 in collecting information, and thus improve the reliability of the battery device 10, and the information acquisition element 50 does not need an additional structure to be positioned and connected with the isolation component 40, which is conducive to simplifying the overall structure of the battery device 10.

[0164] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that: include: A box body having a containing cavity; A battery cell is accommodated in the accommodation cavity; An isolation assembly is disposed in the accommodating cavity, the isolation assembly includes a seat body and a cover body, the seat body includes a seat body and a clamping portion, the cover body is disposed on one side of the seat body along a first direction, the cover body and the seat body are surrounded to form an accommodating space, the clamping portion is connected to one side of the seat body along the first direction, and the cover body is clamped between the clamping portion and the seat body; The information collection element is accommodated in the accommodation space and sandwiched between the cover body and the seat body. The information collection element is used to collect the working information of the battery cell.

2. The battery device according to claim 1, characterized in that: The clamping portion and the seat body are integrally formed.

3. The battery device according to claim 1, characterized in that: A slot is provided between the clamping portion and the seat body, and the cover body is clamped in the slot; The cover body is arranged in the slot along a second direction, and the first direction intersects with the second direction.

4. The battery device according to claim 3, characterized in that: The isolation assembly comprises at least two clamping parts, and the at least two clamping parts are arranged on both sides of the seat body along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other; The cover body is clamped between at least two of the clamping parts at two sides along the third direction.

5. The battery device according to claim 3, characterized in that: The seat body has a first sliding portion, and the cover body has a second sliding portion, and the second sliding portion is configured to be slidable along the second direction relative to the first sliding portion.

6. The battery device according to claim 5, characterized in that: The first sliding portion includes a stopper, the stopper is protruding toward the cover body along the first direction, the stopper has a first side and a second side, the first side and the second side are respectively arranged at two sides of the stopper along the second direction; The second sliding portion includes a first elastic locking portion, which protrudes toward the seat body along the first direction and is configured to be able to slide from the first side to the second side relative to the stop portion, and the stop portion is configured to be able to prevent the first elastic locking portion from moving from the second side to the first side.

7. The battery device according to claim 6, characterized in that: The stopper has a first guide surface, which is disposed on the first side and points from the first side to the second side, and the first guide surface is inclined in a direction away from the seat body.

8. The battery device according to claim 7, characterized in that: The first elastic locking portion has a first matching surface, which is arranged on a side of the first elastic locking portion facing away from the stop portion, and at least a portion of the first matching surface is parallel to the first guide surface.

9. The battery device according to claim 6, characterized in that: The second sliding portion also includes a second elastic locking portion, which is spaced apart from the first elastic locking portion along the second direction, and the second elastic locking portion is configured to be able to slide from the first side to the second side relative to the stop portion, and the stop portion is configured to be able to prevent the second elastic locking portion from moving from the second side to the first side.

10. The battery device according to claim 9, characterized in that: The first sliding portion has a first guide surface, the first guide surface is arranged on the first side, pointing from the first side to the direction of the second side, and the first guide surface is inclined in a direction away from the seat body; The second elastic locking portion has a second matching surface, which is arranged on a side of the first elastic locking portion facing the first elastic locking portion, and at least a portion of the second matching surface is parallel to the first guide surface.

11. The battery device according to claim 3, characterized in that: The seat body has a first wall, the first wall intersects with the cover body, the first wall has a limiting opening, and the limiting opening is arranged through the first wall along the second direction; a part of the cover body is arranged in the limiting opening, so that the first wall is configured to limit the displacement of the cover body along the first direction.

12. The battery device according to any one of claims 1 to 11, characterized in that: The information collection element includes a temperature sensor.

13. The battery device according to claim 12, characterized in that: The battery device further comprises an elastic thermally conductive pad, which is clamped on a side of the temperature sensor facing away from the cover.

14. The battery device according to any one of claims 1 to 11, characterized in that: The battery device further comprises a flexible conductive member, which is electrically connected to the information collection element. The flexible conductive member is passed through the cover body and clamped on a side of the information collection element facing away from the cover body.

15. The battery device according to any one of claims 1 to 11, characterized in that: The cover body has a rough portion, and the rough portion is arranged on a surface of the cover body facing away from the accommodating space.

16. An electrical device, characterized in that: The battery device comprises a battery device as claimed in any one of claims 1 to 15, wherein the battery device is used to provide electrical energy.

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