Battery device and electric device

Abstract

The application relates to the battery technical field and discloses a battery device and a power utilization device. The battery device comprises a battery monomer, a separation plate, a temperature detector and a cover plate. The separation plate is arranged on one side of the battery monomer along a first direction and has a detection hole exposing the battery monomer. The separation plate comprises a first wall provided with a insertion hole. The axial direction of the insertion hole is a second direction, and the first direction intersects the second direction. The temperature detector is arranged at the detection hole and is in thermal conduction with the battery monomer. The temperature detector is used for detecting the temperature of the battery monomer. The cover plate is detachably connected with the separation plate and comprises a main body part and a plug-in part connected with the main body part. When the cover plate is connected with the separation plate, the main body part covers the temperature detector, and the plug-in part is inserted into the insertion hole along the second direction. The battery device provided by the application can solve the interference problem between the cover plate and the first wall, so that the cover plate effectively fixes the temperature detector.

Description

Technical Field

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

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0003] Battery devices typically use temperature detectors to monitor the temperature of individual battery cells. A separator plate is positioned above each battery cell to hold a circuit board in place, and the temperature detector is electrically connected to the circuit board. A cover plate is mounted on the separator plate, which covers the temperature detector, clamping it between the cover plate and the battery cell.

[0004] In related technologies, some battery devices have a separator plate with a protruding structure that protrudes in the direction away from the battery cell. The temperature detector is located adjacent to the protruding structure. When the cover plate is installed on the separator plate, it interferes with the protruding structure, causing the cover plate to be unable to effectively fix the temperature detector. Utility Model Content

[0005] In view of this, embodiments of this application provide a battery device and an electrical device to enable the cover plate to effectively fix the temperature detector.

[0006] In a first aspect, embodiments of this application provide a battery device comprising a battery cell, a separator, a temperature detector, and a cover. The separator is disposed on one side of the battery cell along a first direction and has a detection hole exposing the battery cell. The separator includes a first wall extending in a direction away from the battery cell, and the first wall has an insertion hole with its axis aligned with a second direction, the first direction intersecting the second direction. The temperature detector is disposed at the detection hole and is used to detect the temperature of the battery cell. The cover is detachably connected to the separator and includes a main body and a connector connected to the main body. The cover is disposed on the side of the temperature detector away from the battery cell, the main body covers the temperature detector, and the connector is inserted into the insertion hole along the second direction to prevent the cover and the temperature detector from moving in the direction away from the battery cell.

[0007] Through the above technical solution, the temperature detector can detect the temperature of the battery cell. The cover plate and the separator plate are detachably connected, facilitating the installation of the cover plate. When the cover plate and the separator plate are connected, the cover plate is positioned on the side of the temperature detector away from the battery cell, the main body covers the temperature detector, and the plug part is inserted into the socket. This prevents the cover plate and the temperature detector from moving in the direction away from the battery cell, thereby fixing the temperature detector.

[0008] In addition, the first wall is provided with a socket. When the cover plate is connected to the isolation plate, the plug is inserted into the socket. In this way, when the cover plate is connected to the isolation plate, the cover plate and the first wall will not interfere with each other, and the cover plate can be installed by plugging the plug into the socket of the first wall.

[0009] Therefore, the battery device provided in this application can solve the problem of interference between the cover plate and the first wall, thereby enabling the cover plate to effectively fix the temperature detector.

[0010] In some embodiments, the side of the connector away from the battery cell abuts against the wall of the socket. This allows the cover to rest against the temperature detector in the first direction, which helps to prevent the temperature detector from moving in the first direction.

[0011] In some embodiments, along the second direction, the insertion portion is disposed on the side of the main body facing the first wall.

[0012] In this way, as the cover moves toward the first wall in the second direction, the plug can be inserted into the socket, which facilitates the connection between the plug and the socket, thus making it easier for the cover to connect with the partition plate.

[0013] In some embodiments, the first wall has two insertion holes spaced apart along a third direction, and the cover plate includes two insertion portions spaced apart along a third direction. The two insertion portions are inserted into the two insertion holes one-to-one, and the third direction intersects at the first direction and the second direction. This helps to improve the connection reliability between the cover plate and the isolation plate.

[0014] In some embodiments, the partition plate further includes a second wall located on one side of the first wall in the second direction, and a limiting groove is provided on the side of the second wall away from the first wall;

[0015] The cover plate includes a limiting part connected to the main body. The limiting part is located in a limiting groove. Along the first direction, the side of the limiting part away from the battery cell abuts against the groove wall of the limiting groove to restrict the cover plate from moving away from the battery cell.

[0016] Through the above technical solution, the cover plate can connect to the insertion hole of the first wall via the insertion part, and also to the limiting groove of the second wall via the limiting part. That is, the cover plate connects to both the first and second walls, with the second wall located on one side of the first wall in the second direction. This allows the cover plate to connect to different positions on the separator, thereby improving the strength of the connection between the cover plate and the separator. Furthermore, as the cover plate moves towards the first wall in the second direction, the insertion part can engage with the insertion hole, and the limiting part can cooperate with the limiting groove, facilitating the connection between the cover plate and the separator. In addition, the side of the limiting part away from the battery cell abuts against the groove wall of the limiting groove, allowing the cover plate to abut against the temperature detector in the first direction, which helps prevent the temperature detector from moving in the first direction.

[0017] In some embodiments, along the second direction, the side of the limiting portion near the first wall abuts against the groove wall of the limiting groove to restrict the cover plate from moving toward the first wall, which helps to avoid interference between the cover plate and the first wall.

[0018] In some embodiments, the limiting portion is disposed on at least one side of the main body along a third direction, which intersects the first and second directions. This can reduce the size of the cover plate in the first and second directions.

[0019] In some embodiments, there are two second walls, which are spaced apart along a third direction and intersect at the first and second directions;

[0020] Along the third direction, the main body is located between the two second walls.

[0021] Through the above technical solution, the two second walls can limit the main body, that is, the isolation plate can limit the cover plate in the third direction, which helps to improve the connection reliability between the cover plate and the isolation plate.

[0022] In some embodiments, the cover plate further includes a first snap-fit ​​portion connected to the main body portion, and along the second direction, the first snap-fit ​​portion is located on the side of the insertion portion away from the first wall;

[0023] The partition includes a second snap-fit ​​portion, which engages with the first snap-fit ​​portion. The second snap-fit ​​portion is used to prevent the cover from moving away from the first wall in a second direction.

[0024] With the above technical solution, when the first snap-fit ​​part and the second snap-fit ​​part snap-fit ​​together, the second snap-fit ​​part can prevent the cover plate from moving away from the first wall in the second direction, which helps to prevent the plug part from dislodging from the plug hole, and thus helps to improve the connection reliability between the cover plate and the isolation plate.

[0025] In some embodiments, the first snap-fit ​​portion extends in a direction away from the insertion portion;

[0026] When the cover plate is connected to the partition plate, the side of the first snap-fit ​​part away from the plug-in part abuts against the second snap-fit ​​part.

[0027] In this way, the first snap-fit ​​part can directly abut against the second snap-fit ​​part from the side away from the insertion part, which helps to simplify the structure of the first snap-fit ​​part, thereby helping to simplify the structure of the cover plate.

[0028] In some embodiments, the first snap-fit ​​portion includes a protrusion that protrudes in the direction toward the battery cell, and the second snap-fit ​​portion includes a recess that is recessed in the direction toward the battery cell.

[0029] The protruding part fits into the recessed part.

[0030] With the above technical solution, when the cover plate and the isolation plate are connected, the protrusion is inserted into the recess, which can increase the contact area between the first and second locking parts, making it less likely for the first and second locking parts to separate, thus improving the locking reliability of the first and second locking parts.

[0031] In some embodiments, the first snap-fit ​​portion includes an elastic arm extending away from the first wall in a second direction, the first end of the elastic arm in the second direction being connected to the plug portion, and the second end of the elastic arm in the second direction being a free end.

[0032] Through the above technical solution, the elastic arm can generate elastic deformation, which facilitates the snapping of the first snap-fit ​​part and the second snap-fit ​​part.

[0033] In some embodiments, the second end of the elastic arm is provided with a bent portion that bends toward the battery cell, and the second engaging portion includes a recessed portion that is recessed in the direction toward the battery cell, and at least a portion of the bent portion engages with the recessed portion.

[0034] With the above technical solution, when the first and second locking parts are engaged, at least a portion of the bent portion is engaged within the recessed portion, which helps improve the engagement reliability of the first and second locking parts. Furthermore, the engagement of at least a portion of the bent portion within the recessed portion allows the elastic arm to recover at least a portion of its deformation, thus reducing the internal stress of the elastic arm. This helps prevent the elastic arm from deforming uncontrollably or even breaking under long-term internal stress, which could lead to connection failure between the first and second locking parts.

[0035] In some embodiments, the partition plate includes a stop portion located on the side of the second engaging portion away from the first wall, and the stop portion is used to abut against the first engaging portion.

[0036] Through the above technical solution, during the assembly process of the cover plate and the separator plate, along the first direction, the cover plate moves from the side of the separator plate away from the battery cell toward the battery cell, and the stop part can abut against the first snap-fit ​​part, causing the first snap-fit ​​part to undergo elastic deformation. The main body part continues to move toward the battery cell. When the main body part reaches the predetermined position, along the second direction, the cover plate can move toward the first wall, so that the insertion part is inserted into the insertion hole, and the first snap-fit ​​part and the second snap-fit ​​part snap-fit ​​together.

[0037] In some embodiments, the partition further includes a third wall disposed on at least one side of the first wall and the second wall along a third direction, at least one of the first wall and the second wall being connected to the third wall, and the third wall may increase the strength of the first wall and / or the second wall.

[0038] In some embodiments, the battery device provided in this application further includes a thermal pad located between the temperature detector and the battery cell.

[0039] In this way, the thermal pad can transfer heat from the battery cell to the temperature detector, allowing the temperature detector to detect the temperature of the battery cell. Furthermore, the thermal pad increases the distance between the temperature detector and the battery cell, making it easier for the cover plate to limit the movement of the temperature detector.

[0040] In some embodiments, the battery device provided in this application further includes a circuit board, which includes a body portion, a transition portion, and a connecting portion connected in sequence, wherein the thickness direction of the transition portion intersects the thickness direction of the body portion and the thickness direction of the connecting portion.

[0041] The connecting part is electrically connected to the temperature detector. Along the first direction, the connecting part is disposed between the battery cell and the cover plate, and the main body is located on the side of the cover plate away from the battery cell.

[0042] Through the above technical solution, the temperature detector can be connected to the connection part of the circuit board, which facilitates the transmission of signals from the temperature detector through the circuit board. Furthermore, the thickness direction of the transition part intersects the thickness direction of the main body and the thickness direction of the connection part, and the connection part is located between the battery cell and the cover plate, while the main body is located on the side of the cover plate away from the battery cell. This allows the connection part of the circuit board to be offset from the main body, facilitating electrical connection between the connection part and the temperature detector.

[0043] In some embodiments, the battery device provided in this application further includes a circuit board, the circuit board including a connecting portion located between a temperature detector and a thermal pad, the temperature detector being connected to the connecting portion, and the thermal pad being disposed between the connecting portion and the battery cell.

[0044] In this way, the temperature detector can be connected to the connection part of the circuit board, which makes it easier for the temperature detector to transmit signals through the circuit board.

[0045] In some implementations, the thermal conductivity of the connection is greater than or equal to that of the thermal pad, which helps to improve the detection accuracy of the temperature detector.

[0046] In some embodiments, the battery device provided in this application further includes a reinforcing plate located on the side of the temperature detector away from the battery cell, and a cover plate disposed on the side of the reinforcing plate opposite to the battery cell.

[0047] In this way, the reinforcing plate can protect the temperature detector, which helps to prevent damage to the temperature detector when the cover moves.

[0048] In some embodiments, a groove is provided on the side of the cover plate facing the battery cell, and the side of the reinforcing plate away from the battery cell is slidably connected to the groove in a second direction. This allows the cover plate to slide in the second direction, facilitating installation and disassembly.

[0049] In some embodiments, at least a portion of the reinforcing plate is disposed within the detection hole, and the cover plate is located on the side of the detection hole away from the battery cell. This allows the hole wall of the detection hole to limit the reinforcing plate in a second direction, preventing misalignment of the reinforcing plate when the cover plate slides in the second direction.

[0050] In some embodiments, the separator includes a recessed groove in a direction away from the battery cell, the groove wall including a first wall.

[0051] In this way, the groove can avoid other components of the battery device (such as the exhaust structure), and the groove wall (first wall) is provided with a socket, so that the cover can be inserted into the socket through the insertion part, thereby helping to avoid interference between the cover and the groove. Of course, the groove can also be used for other purposes, such as the groove wall supporting other components (such as circuit boards).

[0052] Secondly, this application provides an electrical device that includes the battery device of any of the above embodiments. The electrical device provided by this application has the same or similar technical effects as the battery device of any of the above embodiments, which will not be repeated here.

[0053] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0054] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0055] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0056] Figure 2 This is an exploded view of the battery device provided in some embodiments of this application;

[0057] Figure 3 This is an exploded view of a battery device provided in some other embodiments of this application;

[0058] Figure 4 An exploded view of a battery device provided in some embodiments of this application;

[0059] Figure 5This is a cross-sectional view of a battery cell, separator, temperature detector, and cover plate provided in some embodiments of this application, wherein the battery cell is not cut.

[0060] Figure 6 A three-dimensional structural schematic diagram of an isolation plate, temperature detector, cover plate, thermal pad, and circuit board provided in some embodiments of this application;

[0061] Figure 7 for Figure 6 A schematic diagram of the decomposed structure;

[0062] Figure 8 This is a partial structural schematic diagram of an isolation plate provided in some embodiments of this application;

[0063] Figure 9 This is a schematic diagram of the structure of the cover plate provided in some embodiments of this application;

[0064] Figure 10 This is one of the structural schematic diagrams of an isolation plate and a cover plate provided in some embodiments of this application, wherein the cover plate is in a first position;

[0065] Figure 11 This is one of the structural schematic diagrams of an isolation plate and a cover plate provided in some embodiments of this application, wherein the cover plate is in a second position;

[0066] Figure 12 This is a cross-sectional structural diagram of the cover plate and reinforcing plate provided in some embodiments of this application.

[0067] The markings in the diagram mean:

[0068] 1000 vehicles;

[0069] Battery unit 100, controller 200, motor 300;

[0070] Box 110, storage space 101, battery cell assembly 120, battery cell 121;

[0071] Isolation plate 130; detection hole 1301; groove 131; first wall 1311; insertion hole 13111; second wall 132; limiting groove 1321; second snap-fit ​​part 133; recessed part 1331; stop part 134; third wall 135; temperature detector 140;

[0072] Cover plate 150; Indicator arrow 1501; Anti-slip structure 1502; Slide groove 1503; Main body 151; Insertion part 152; Notch 153; Limiting part 154; First snap-fit ​​part 155; Protrusion 1551; Thermal pad 160; Circuit board 170; Body part 171; Transition part 172; Connecting part 173; Reinforcing plate 180; Protrusion 181;

[0073] First box 10, bottom plate 11, frame 12, second box 20. Detailed Implementation

[0074] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0075] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0076] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0077] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0078] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0079] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0080] In the description of the embodiments of this application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0081] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0082] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0083] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0084] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0085] Battery devices typically use temperature detectors to monitor the temperature of individual battery cells. A separator plate is positioned above each battery cell to hold a circuit board in place, and the temperature detector is electrically connected to the circuit board. A cover plate is mounted on the separator plate, which covers the temperature detector, clamping it between the cover plate and the battery cell.

[0086] In related technologies, some battery devices have a separator plate with a protruding structure that protrudes in the direction away from the battery cell. The temperature detector is located adjacent to the protruding structure. When the cover plate is installed on the separator plate, it interferes with the protruding structure, causing the cover plate to be unable to effectively fix the temperature detector.

[0087] In view of this, embodiments of this application provide a battery device, which includes a battery cell, a separator, a temperature detector, and a cover. The separator is disposed on one side of the battery cell along a first direction and has a detection hole that exposes the battery cell. The separator includes a first wall extending in a direction away from the battery cell, i.e., the first wall protrudes relative to the battery cell. An insertion hole is provided on one side of the first wall in a second direction, where the first direction intersects with the second direction. The temperature detector is disposed at the detection hole and is thermally connected to the battery cell. The temperature detector is used to detect the temperature of the battery cell. The cover is detachably connected to the separator and includes a insertion portion. When the cover is connected to the separator, the cover is disposed on the side of the temperature detector away from the battery cell to prevent the temperature detector from moving in the direction away from the battery cell, and the insertion portion is inserted into the insertion hole. When the cover is detached from the separator, the insertion portion disengages from the insertion hole.

[0088] In the battery device provided in this application embodiment, the temperature detector can detect the temperature of the battery cell, and the cover plate and the separator plate are detachably connected for easy installation of the cover plate. When the cover plate and the separator plate are connected, the cover plate is positioned on the side of the temperature detector away from the battery cell to prevent the temperature detector from moving in the direction away from the battery cell, thereby fixing the temperature detector.

[0089] The first wall has a socket. When the cover plate is connected to the partition plate, the plug is inserted into the socket. When the cover plate is disconnected from the partition plate, the plug is disconnected from the socket. In this way, when the cover plate is connected to the partition plate, there will be no interference between the cover plate and the first wall, and the cover plate can be installed by plugging the plug into the socket of the first wall.

[0090] Therefore, the battery device provided in this application can solve the problem of interference between the cover plate and the first wall, thereby enabling the cover plate to effectively fix the temperature detector.

[0091] The technical solutions described in the embodiments of this application are applicable to battery devices, energy storage devices, and electrical devices that use battery devices.

[0092] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0093] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0094] The battery device disclosed in this application can be used in electrical devices that use the battery device as a power source or in various energy storage systems that use the battery device as an energy storage element. Electrical devices include, for example, mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships, and spacecraft. Spacecraft include, for example, airplanes, rockets, space shuttles, and spacecraft.

[0095] The energy storage device provided in this application includes one or more battery clusters to improve the voltage and capacity of the energy storage device. A battery cluster may include multiple battery devices, which are connected in series via a busbar to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the multiple battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0096] Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage devices can store electrical energy as needed and output it when appropriate. For example, an energy storage device can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. The energy storage system provided in this application embodiment can be any power system that requires energy storage devices.

[0097] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0098] In some embodiments, the energy storage device may include a cabinet and one or more battery clusters housed within the cabinet.

[0099] For ease of explanation, the following embodiments will be described using a vehicle as an example of an electrical device according to an embodiment of this application.

[0100] Please see Figure 1 The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is installed inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0101] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0102] Please see Figure 2 The battery device 100 mentioned in the embodiments of this application may include one or more battery cell assemblies 120 for providing voltage and capacity. The battery cell assembly 120 may include multiple battery cells 121, which are connected in series, parallel or mixed connection via busbars.

[0103] In some embodiments, the multiple battery cells 121 in the battery device 100 can be electrically connected through a busbar (not shown) to achieve parallel, series or mixed connection of the multiple battery cells 121 in the battery device 100.

[0104] In some embodiments, the battery cell assembly 120 is typically formed by arranging a plurality of battery cells 121; as an example, the battery cell assembly 120 can be a battery module, which is formed by arranging and fixing a plurality of battery cells 121 into an independent module. As an example, the battery module can be formed by binding a plurality of battery cells 121 together with cable ties.

[0105] In some embodiments, the battery device 100 may be a battery pack, which includes a housing 110 and one or more battery cell assemblies 120, the battery cell assemblies 120 being housed in the housing 110.

[0106] As an example, the battery cell assembly 120 can be a battery module, which can be housed in the housing 110 by fixing the battery module in the housing 110.

[0107] As an example, the battery cell assembly 120 can also be housed in the housing 110 by directly fixing multiple battery cells 121 to the housing 110.

[0108] As an example, the housing 110 may include a first housing 10 and a second housing 20. The first housing 10 and the second housing 20 are fastened together, forming a closed receiving space 101 inside the housing 110 to house the battery cell assembly 120. Here, "closed" refers to covering or closing, and can be sealed or unsealed. The first housing 10 may be a top cover or a bottom plate 11.

[0109] As an example, the housing 110 may include a top cover, a frame 12, and a bottom plate 11. The top cover and the bottom plate 11 are respectively connected to the frame 12, so that the interior of the housing 110 forms an accommodating space 101 to accommodate the battery cell assembly 120.

[0110] As an example, the first housing 10 may include a frame 12 and a base plate 11, and the second housing 20 may include a top cover.

[0111] As an example, the first housing 10 may have a first receiving groove, and the second housing 20 may have a second receiving groove. After the first housing 10 and the second housing 20 are fastened together, the internal spaces of the first receiving groove and the second receiving groove together form a receiving space 101 for storing the battery cell assembly 120. The first receiving groove is capable of accommodating at least a portion of the battery cell 121. The first receiving groove is disposed in the first housing 10 along a first direction Z (e.g., ...). Figure 2 One side of the Z direction in the middle. Figure 2 The X direction in the diagram indicates the width of the battery cell 121, the Y direction indicates the length of the battery cell 121, and the Z direction indicates the height of the battery cell 121.

[0112] As an example, the first housing 10 may have a first receiving groove, and the second housing 20 may serve as a top cover. After the first housing 10 and the second housing 20 are fastened together, the second housing 20 covers the opening of the first receiving groove, so that the internal space of the first receiving groove forms a receiving space 101 for storing the battery cell assembly 120.

[0113] As an example, the housing 110 can be part of the chassis structure of the vehicle 1000. For example, the top cover of the housing 110 can be at least part of the floor of the vehicle 1000, or the frame 12 of the housing 110 can be at least part of the crossbeams and longitudinal beams of the vehicle 1000.

[0114] It is understood that the battery cell 121 is the smallest unit constituting the battery device 100. The battery cell 121 includes a casing, electrode assembly, and other functional components. The casing is provided with functional components such as electrode terminals and a pressure relief mechanism. The electrode terminals are connected to the tabs of the electrode assembly to realize the input and output of electrical energy, and the pressure relief mechanism is used to release the internal pressure of the battery cell 121.

[0115] The outer casing is used to enclose a cavity, which can be used to house the electrode assembly, electrolyte, and other components. The outer casing can be of various shapes and sizes, such as cuboid, cylindrical, or hexagonal prism. Specifically, the shape of the outer casing can be determined according to the specific shape and size of the electrode assembly.

[0116] For example, please continue to refer to Figure 2The battery cell 121 can be a prismatic battery cell.

[0117] For example, please refer to Figure 3 The battery cell 121 can be a cylindrical battery cell.

[0118] For example, please refer to Figure 4 The battery cell 121 can be a blade battery cell. The casing material can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0119] Please refer to Figure 5 , Figure 6 and Figure 7 The battery device 100 proposed in this application includes a battery cell 121, an isolation plate 130, a temperature detector 140, and a cover plate 150. The isolation plate 130 is disposed on one side of the battery cell 121 along the first direction Z, and the isolation plate 130 has a detection hole 1301 that exposes the battery cell 121. The isolation plate 130 includes a first wall 1311 extending in a direction away from the battery cell 121. The first wall 1311 is provided with an insertion hole 13111. The axis of the insertion hole 13111 is the second direction X, and the first direction Z intersects the second direction X.

[0120] A temperature detector 140 is disposed at the detection hole 1301 and is thermally connected to the battery cell 121. The temperature detector 140 is used to detect the temperature of the battery cell 121. A cover plate 150 is detachably connected to the separator plate 130, and the cover plate 150 includes a main body 151 and a plug-in portion 152 connected to the main body 151. When the cover plate 150 is connected to the separator plate 130, the cover plate 150 is disposed on the side of the temperature detector 140 away from the battery cell 121, and the main body 151 covers the temperature detector 140, preventing the temperature detector 140 from moving in the direction away from the battery cell 121.

[0121] It is understandable that the casing of the battery cell 121 can have a window, which is sealed by a thermally conductive structure. The temperature detector 140 can be thermally connected to the thermally conductive structure, allowing the structure to conduct heat from inside the battery cell 121 to the temperature detector 140, thus enabling the temperature detector 140 to detect the temperature of the battery cell 121. The thermally conductive structure can be thermally conductive adhesive, thermally conductive metal, etc. The temperature detector 140 can be a thermistor, temperature sensor, etc.

[0122] It should be noted that, Figure 5 , Figure 6 and Figure 7 Only a portion of the structure of the separator 130 is shown. The busbar connecting the battery cell 121 can be mounted on the separator 130 (not shown in the figure).

[0123] The cover plate 150 and the separator plate 130 are detachably connected, which facilitates the installation of the cover plate 150. When the cover plate 150 is connected to the separator plate 130, the cover plate 150 is located on the side of the temperature detector 140 away from the battery cell 121, which is used to prevent the temperature detector 140 from moving in the direction away from the battery cell 121, thereby limiting and fixing the temperature detector 140.

[0124] The first wall 1311 is provided with a socket 13111. When the cover plate 150 is connected to the separator plate 130, the insertion part 152 is inserted into the socket 13111 along the second direction X. In this way, when the cover plate 150 is connected to the separator plate 130, the first wall 1311 can avoid the insertion part 152 by using the socket 13111. The cover plate 150 and the first wall 1311 will not interfere with each other. Moreover, the cover plate 150 can be installed by inserting the insertion part 152 into the socket 13111 of the first wall 1311, thereby preventing the cover plate 150 and the temperature detector 140 from moving in the direction away from the battery cell 121.

[0125] Therefore, the battery device 100 provided in this application embodiment can solve the problem of interference between the cover plate 150 and the first wall 1311, thereby enabling the cover plate 150 to effectively fix the temperature detector 140.

[0126] Understandably, please refer to Figure 6 , Figure 7 and Figure 8 The cover plate 150 may include two insertion portions 152. Correspondingly, the first wall 1311 is provided with two insertion holes 13111. The insertion portions 152 are inserted into the corresponding insertion holes 13111, which helps to improve the connection reliability between the cover plate 150 and the isolation plate 130. The two insertion holes 13111 and the two insertion portions 152 are all spaced apart along a third direction. The cover plate 150 may form a notch 153 between the two insertion portions 152. The notch 153 can avoid the first wall 1311, thereby helping to avoid interference between the cover plate 150 and the first wall 1311.

[0127] The insertion hole 13111 can be a through hole that penetrates the first wall 1311, or it can be a blind hole that opens at one end along the second direction X. The insertion part 152 can be inserted into the insertion hole 13111 through the opening.

[0128] In some embodiments, the separator 130 includes a groove 131 recessed in a direction away from the battery cell 121, and the groove wall of the groove 131 includes a first wall 1311.

[0129] Understandably, the groove 131 can avoid other components of the battery device 100, such as a smoke exhaust structure that can extend into the groove 131. The groove 131 can extend along a third direction Y, and the smoke exhaust structure can extend into the groove 131 along the third direction Y, intersecting with the first direction Z and the second direction X. A pressure relief mechanism can be provided on the battery cell 121, through which smoke inside the battery cell 121 can be discharged, and the smoke discharged by the pressure relief mechanism can be discharged through the smoke exhaust structure. Of course, the groove 131 can also be used for other purposes, such as supporting other components (e.g., circuit board 170) with its groove walls.

[0130] In this way, the groove wall (first wall 1311) of the groove 131 is provided with a socket 13111, so that the cover plate 150 can be inserted into the socket 13111 through the insertion part 152, thereby helping to avoid interference between the cover plate 150 and the groove 131.

[0131] The partition plate 130 can be an injection molded plate, which facilitates the formation of the first wall 1311 and even the groove 131.

[0132] In some embodiments, when the cover plate 150 is connected to the separator plate 130, the side of the insertion portion 152 away from the battery cell 121 abuts against the wall of the insertion hole 13111.

[0133] Understandably, the side of the plug portion 152 away from the battery cell 121 abuts against the wall of the socket 13111, and a resisting force is formed between the plug portion 152 and the wall of the socket 13111. The side of the cover plate 150 facing the battery cell 121 also forms a resisting force. This allows the cover plate 150 to abut against the temperature detector 140 in the first direction Z, which helps to prevent the temperature detector 140 from moving in the first direction Z and can improve the stability of the temperature detector 140.

[0134] Please see Figure 7 , Figure 8 and Figure 9 In some embodiments, along the second direction X, the insertion portion 152 is disposed on the side of the main body 151 facing the first wall 1311, and the insertion hole 13111 is disposed on the first wall 1311 along the second direction X, that is, the axial direction of the insertion hole 13111 is the second direction X. In this way, as the cover plate 150 moves along the second direction X toward the first wall 1311, the insertion portion 152 can be inserted into the insertion hole 13111, which facilitates the insertion of the insertion portion 152 into the insertion hole 13111, thereby facilitating the connection between the cover plate 150 and the partition plate 130.

[0135] Please see Figure 7 , Figure 8 and Figure 9In some embodiments, the isolation plate 130 further includes a second wall 132, which is located on the side of the first wall 1311 in the negative direction of the second direction X, and a limiting groove 1321 is provided on the side of the second wall 132 away from the first wall 1311.

[0136] The cover plate 150 includes a limiting part 154. When the cover plate 150 is connected to the partition plate 130, the limiting part 154 is located in the limiting groove 1321. When the cover plate 150 is disengaged from the partition plate 130, the limiting part 154 disengages from the limiting groove 1321. The second wall 132 can limit the limiting part 154 in both the first direction Z and the second direction X, restricting the limiting part 154 from moving in the negative direction of the second direction X and the negative direction of the first direction Z. For example, the second wall 132 can be an inverted L-shaped structure, that is, the second wall 132 can be a 7-shaped structure. Of course, the second wall 132 can also be a C-shaped structure, so that the second wall 132 can form the limiting groove 1321.

[0137] Wherein, the positive direction of the first direction Z and the positive direction of the second direction X are the directions indicated by the arrows, and the negative direction is the direction opposite to the direction indicated by the arrows.

[0138] Through the above technical solution, the cover plate 150 can be connected to the insertion hole of the first wall 1311 through the insertion part 152, and can also be connected to the limiting groove 1321 of the second wall 132 through the limiting part 154. That is, the cover plate 150 is connected to the first wall 1311 and the second wall 132 respectively, and the second wall 132 is located on one side of the first wall 1311 in the second direction X. In this way, the cover plate 150 can be connected to the isolation plate 130 at different positions, thereby improving the firmness of the connection between the cover plate 150 and the isolation plate 130.

[0139] Furthermore, during the movement of the cover plate 150 toward the first wall 1311 in the second direction X, the insertion part 152 can be inserted into the insertion hole 13111, and the limiting part 154 can cooperate with the limiting groove 1321. The limiting groove 1321 can limit the cover plate 150 in the second direction X, so as to avoid the insertion part 152 of the cover plate 150 from being over-inserted into the insertion hole 13111 of the isolation plate 130 and damaging the first wall 1311, and also to improve the stability of the cover plate 150.

[0140] When the cover plate 150 is connected to the separator plate 130, the side of the limiting part 154 away from the battery cell 121 abuts against the groove wall of the limiting groove 1321.

[0141] It is understandable that the side of the limiting part 154 away from the battery cell 121 abuts against the wall of the limiting groove 1321. Along the first direction Z, a resisting force is formed between the limiting part 154 and the wall of the limiting groove 1321. The side of the cover plate 150 facing the battery cell 121 also forms a resisting force. This allows the cover plate 150 to abut against the temperature detector 140 in the first direction Z, which helps to prevent the temperature detector 140 from moving in the first direction Z.

[0142] In some embodiments, along the second direction X, the side of the limiting portion 154 near the first wall 1311 abuts against the groove wall of the limiting groove 1321 to restrict the cover plate 150 from moving toward the first wall 1311. This helps to avoid interference between the cover plate 150 and the first wall 1311, and after the cover plate 150 reaches the side of the temperature detector 140 along the first direction Z, the limiting groove 1321 can prevent the cover plate 150 from continuing to move toward the first wall 1311, so that the cover plate 150 can cover the temperature detector 140.

[0143] Please see Figure 7 , Figure 8 and Figure 9 In some embodiments, the limiting portion 154 is disposed on at least one side of the main body portion 151 along a third direction Y, which intersects with the first direction Z and the second direction X. In this way, the limiting portion 154 extends along the third direction Y and does not occupy space in the first direction Z and the second direction X, thereby reducing the size of the cover plate 150 in the first direction Z and the second direction X.

[0144] It is understood that the thickness direction of the first wall 1311 is the second direction X, and the thickness direction of the second wall 132 is the third direction Y. That is, the first wall 1311 and the second wall 132 intersect, so that an active space for installing the cover plate 150 can be formed between the first wall 1311 and the second wall 132, and the detection hole 1301 can connect to this active space.

[0145] Please see Figure 7 , Figure 8 and Figure 9 In some embodiments, there are two second walls 132, which are spaced apart along the third direction Y. The third direction Y intersects the first direction Z and the second direction X. When the cover plate 150 is connected to the partition plate 130, the main body 151 is located between the two second walls 132 along the third direction Y.

[0146] It is understandable that the main body is located between two second walls 132 in the third direction Y. The two second walls 132 can limit the main body. That is, the isolation plate 130 can limit the cover plate 150 in the third direction Y, which is beneficial to improving the connection reliability between the cover plate 150 and the isolation plate 130.

[0147] Furthermore, the insertion part 152 is located on one side of the main body 151 along the second direction X, and the limiting part 154 is located on one side of the main body 151 along the third direction Y. That is, the insertion part 152 can be formed by extending the main body 151 outward along the second direction X, and the limiting part 154 can be formed by extending the main body 151 outward along the third direction Y. This helps to simplify the structure of the cover plate 150.

[0148] Please see Figure 7 , Figure 8 and Figure 9 In some embodiments, the cover plate 150 further includes a first latching portion 155 connected to the main body portion 151, the first latching portion 155 being located on the negative side of the insertion portion 152 along the second direction X. The partition plate 130 includes a second latching portion 133. When the cover plate 150 is connected to the partition plate 130, the first latching portion 155 engages with the second latching portion 133, the second latching portion 133 preventing the cover plate 150 from moving along the second direction X and away from the first wall 1311.

[0149] In the second direction X, the first snap-fit ​​portion 155 is located between the insertion portion 152 and the limiting portion 154, and the second snap-fit ​​portion 133 is located between the first wall 1311 and the second wall 132.

[0150] When the cover plate 150 is connected to the isolation plate 130, that is, when the plug part 152 is plugged into the socket 13111, the first locking part 155 and the second locking part 133 are engaged. The second locking part 133 can prevent the cover plate 150 from moving along the second direction X and away from the first wall 1311, thereby helping to prevent the plug part 152 from disengaging from the socket 13111, and thus helping to improve the connection reliability between the cover plate 150 and the isolation plate 130.

[0151] Furthermore, along the second direction X, the side of the limiting part 154 near the first wall 1311 abuts against the groove wall of the limiting groove 1321, and the second snap-fit ​​part 133 and the groove wall of the limiting groove 1321 can clamp the cover plate 150 relative to each other, so that the cover plate 150 is not easily misaligned after it reaches the temperature detector 140 along the first direction Z.

[0152] In some embodiments, the first snap-fit ​​portion 155 extends in a direction away from the plug portion 152, and when the cover plate 150 is connected to the partition plate 130, the side of the first snap-fit ​​portion 155 away from the plug portion 152 abuts against the second snap-fit ​​portion 133.

[0153] In this way, the first snap-fit ​​portion 155 can directly abut against the second snap-fit ​​portion 133 from the side away from the insertion portion 152, which helps to simplify the structure of the first snap-fit ​​portion 155, thereby helping to simplify the structure of the cover plate 150.

[0154] Please see Figure 5 , Figure 6, Figure 8 and Figure 9 In some other embodiments, the first snap-fit ​​portion 155 includes a protrusion 1551 that protrudes in the direction toward the battery cell 121, and the second snap-fit ​​portion 133 is a recessed portion 1331 that is recessed in the direction toward the battery cell 121; when the cover plate 150 is connected to the separator plate 130, the protrusion 1551 snaps into the recessed portion 1331.

[0155] The protrusion 1551 can be located at the end of the first latching portion 155 away from the insertion portion 152, that is, the end of the first latching portion 155 away from the insertion portion 152 is bent towards the battery cell 121 to form the protrusion 1551. The protrusion 1551 can also be located in the middle of the first latching portion 155, and the protrusion 1551 is provided on the side of the first latching portion 155 facing the battery cell 121.

[0156] Understandably, when the cover plate 150 is connected to the partition plate 130, the protrusion 1551 is inserted into the recess 1331, which can increase the contact area between the first locking part 155 and the second locking part 133, making it less likely for the first locking part 155 and the second locking part 133 to separate, thus improving the locking reliability of the first locking part 155 and the second locking part 133.

[0157] In some other embodiments, the first snap-fit ​​portion 155 includes an elastic arm extending away from the first wall 1311 (the negative direction of the second direction X), the first end of the elastic arm in the second direction X being connected to the plug portion 152, and the second end of the elastic arm in the second direction X being a free end.

[0158] In this way, the elastic arm can undergo elastic deformation, which facilitates the engagement of the first snap-fit ​​part 155 and the second snap-fit ​​part 133.

[0159] The second end of the elastic arm is provided with a bent portion that bends toward the battery cell 121, and the second engaging portion 133 includes a recessed portion 1331 that is recessed in the direction toward the battery cell 121, with at least a portion of the bent portion engaging into the recessed portion 1331. That is, the bent portion may be located at the protrusion 1551 at the end of the first engaging portion 155 away from the insertion portion 152.

[0160] In this way, when the first engaging portion 155 and the second engaging portion 133 engage, at least a portion of the bent portion engages within the recessed portion 1331, which improves the engagement reliability between the first engaging portion 155 and the second engaging portion 133. Furthermore, the fact that at least a portion of the bent portion engages within the recessed portion 1331 allows the elastic arm to recover at least a portion of its deformation, thus reducing the internal stress of the elastic arm. This helps prevent the elastic arm from deforming uncontrollably or even breaking under long-term internal stress, which could lead to connection failure between the first engaging portion 155 and the second engaging portion 133.

[0161] Understandably, the cover plate 150 can move sequentially between the first position, the second position, and the third position. For example... Figure 7 As shown, along the positive direction of the first direction Z, that is, the direction indicated by the arrow in the first direction Z, i.e. Figure 7 In the upward direction, the first position is located above the second position. The third position is where the cover plate 150 is assembled, in the positive direction of the second direction X, that is, in the direction indicated by the arrow of the second direction X. The third position is closer to the first wall 1311 than the second position.

[0162] exist Figure 6 In the middle, cover plate 150 is in the third position; in Figure 10 In the middle, cover plate 150 is in the first position; in Figure 11 In the middle, cover plate 150 is in the second position.

[0163] Please see Figure 10 and Figure 11 In both the first and second positions, the cover plate 150 and the separator plate 130 are not connected in the second direction X. The cover plate 150 in the first position is further away from the battery cell 121 than the cover plate 150 in the second position. During the movement of the cover plate 150 from the first position to the second position along the first direction Z, the first snap-fit ​​portion 155 deforms. That is, in both the first and second positions, the cover plate 150 is not connected to the separator plate 130 in the second direction X. At this time, the insertion portion 152 is not inserted into the insertion hole 13111, and the limiting portion 154 is not embedded in the limiting groove 1321.

[0164] Please see Figure 11 In the second position, the first latching portion 155 of the cover plate 150 abuts against the partition plate 130 in the first direction Z. The first latching portion 155 can undergo elastic deformation. As the cover plate 150 moves from the first position to the second position along the negative direction of the first direction Z, the cover plate 150 gradually approaches the partition plate 130. The first latching portion 155 can first contact the partition plate 130. Then, the main body 151 continues to move towards the second position along the negative direction of the first direction Z. The first latching portion 155 is squeezed and deformed by the partition plate 130.

[0165] In some embodiments, please refer to Figure 8 , Figure 9 and Figure 11 The separator 130 includes a stop portion 134. When the cover 150 is in the second position, the stop portion 134 abuts against the first snap-fit ​​portion 155. The stop portion 134 is disposed on the separator 130 away from the battery cell 121 (see...). Figure 5 ( ) on one side.

[0166] Please see Figure 8 , Figure 9 , Figure 10 and Figure 11 During the process of the cover plate 150 moving from the first position to the second position in the negative direction of the first direction Z under external force, the stop part 134 abuts against the first locking part 155. The stop part 134 exerts a positive force on the first locking part 155 in the first direction Z, which can deform the first locking part 155, thereby allowing the cover plate 150 to move from the first position to the second position. In the second position, the first locking part 155 is deformed in the positive direction of the first direction Z by the force of the stop part 134, and the insertion part 152 of the cover plate 150 can be basically aligned with the insertion hole 13111. Furthermore, an external force is applied to the cover plate 150 along the second direction X, allowing the cover plate 150 to move toward the first wall 1311, so that the insertion part 152 is inserted into the insertion hole 13111. At this time, the first locking part 155 disengages from the stop part 134 and recovers its deformation in the negative direction of the first direction Z, and is embedded in the recess 1331 of the second locking part 133. At this time, the cover plate 150 is assembled in place and is in the third position.

[0167] In the third position, the cover plate 150 is connected to the separator plate 130; that is, when the cover plate 150 is in the third position, the cover plate 150 is connected to the separator plate 130. When the cover plate 150 moves from the second position to the third position along the second direction X, the first engaging portion 155 is located on the side of the stop portion 134 facing the first wall 1311. The first engaging portion 155 avoids the stop portion 134, so that the first engaging portion 155 can recover at least part of its deformation along the direction toward the battery cell 121 (the negative direction of the first direction Z) and engage with the second engaging portion 133. At this time, the protrusion 1551 of the first engaging portion 155 can be engaged into the recess 1331.

[0168] When the cover plate 150 moves between the second position and the third position, the cover plate 150 translates along the second direction X. When the cover plate 150 is in the second position, the first latching part 155 deforms in order to move to the third position. Similarly, when the cover plate 150 is in the third position, a force needs to be applied to the first latching part 155 to deform the first latching part 155 in the direction away from the battery cell 121 (the positive direction of the first direction Z) and disengage it from the second latching part 133 in order to move to the second position.

[0169] It is understandable that when the cover plate 150 moves from the second position to the third position along the second direction X, that is, when the cover plate 150 is in the third position, the deformation of the first latching part 155 can be fully or partially restored. When the deformation of the first latching part 155 is fully restored, the internal stress of the first latching part 155 disappears, which helps to prevent the first latching part 155 from deforming and even breaking under the long-term action of internal stress, causing the connection between the first latching part 155 and the second latching part 133 to fail. When the deformation of the first latching part 155 is partially restored, the side of the first latching part 155 facing the battery cell 121 (the negative side along the first direction Z) can abut against the separator plate 130, which helps to prevent the cover plate 150 from moving along the first direction Z, thereby improving the stability of the cover plate 150.

[0170] When the cover plate 150 is connected to the partition plate 130, the cover plate 150 moves from the first position to the second position, and then from the second position to the third position. Conversely, when the cover plate 150 is disconnected from the partition plate 130, the cover plate 150 needs to move from the third position to the second position, and then from the second position to the first position. This increases the difficulty of disconnecting the cover plate 150 from the partition plate 130, thereby increasing the reliability of the connection between the cover plate 150 and the partition plate 130. In addition, when the cover plate 150 moves from the second position to the third position along the second direction X, the first locking part 155 recovers at least part of its deformation. This reduces the internal stress of the first locking part 155, which helps to prevent the first locking part 155 from deforming and even breaking under long-term internal stress, thus avoiding connection failure between the first locking part 155 and the second locking part 133.

[0171] Please see Figure 8 In some embodiments, the isolation plate 130 further includes a third wall 135 disposed on at least one side of the first wall 1311 and the second wall 132 along a third direction, at least one of the first wall 1311 and the second wall 132 being connected to the third wall 135, and the third wall 135 may increase the strength of the first wall 1311 and / or the second wall 132.

[0172] Optionally, the isolation plate 130 includes a plurality of third walls 135 spaced apart along the third direction Y, with the first wall 1311 and the second wall 132 disposed between two adjacent third walls 135 along the third direction Y.

[0173] As an example, the third wall 135 is connected to the first wall 1311, which increases the strength of the first wall 1311.

[0174] As an example, the third wall 135 is connected to the second wall 132, which increases the strength of the second wall 132.

[0175] As an example, the third wall 135 is connected to the first wall 1311 and to the second wall 132, which can increase the strength of the first wall 1311 and the second wall 132.

[0176] Please see Figure 9 Optionally, the cover 150 is located away from the battery cell 121 (see...). Figure 5 An anti-slip structure 1502 is provided on one side of the cover plate 150 to facilitate operation.

[0177] Please see Figure 9 Optionally, the cover 150 is located away from the battery cell 121 (see...). Figure 5 An indicator arrow 1501 is provided on one side of the cover plate 150 to facilitate operation of the cover plate 150 according to the indicator arrow 1501, which helps to save assembly time.

[0178] Please see Figure 9 Optionally, the cover 150 is located away from the battery cell 121 (see...). Figure 5 An anti-slip structure 1502 and an indicator arrow 1501 are provided on one side of the battery cell 121. As an example, the side of the indicator arrow 1501 facing away from the battery cell 121 has anti-slip texture. As an example, the indicator arrow 1501 is a graphic formed by the anti-slip texture.

[0179] In some embodiments, please refer to Figure 6 and Figure 7 The battery device 100 provided in this application embodiment also includes a thermal pad 160, which is located between the temperature detector 140 and the battery cell 121 (see...). Figure 5 Between the temperature detector 140 and the battery cell 121, the thermal pad 160 is used to conduct heat.

[0180] In this way, the thermal pad 160 can transfer the heat from the battery cell 121 to the temperature detector 140, thereby enabling the temperature detector 140 to detect the temperature of the battery cell 121. In addition, the thermal pad 160 can increase the distance between the temperature detector 140 and the battery cell 121, making it easier for the cover plate 150 to limit the temperature detector 140.

[0181] Optionally, the thermal pad 160 rests between the temperature detector 140 and the battery cell 121. This improves the stability of the thermal pad 160, reducing the likelihood of misalignment between the thermal pad 160 and the battery cell 121, and between the thermal pad 160 and the temperature detector 140. The thermal pad 160 may also be elastic, providing cushioning for the temperature detector 140 and protecting it.

[0182] In some embodiments, please continue reading Figure 6 and Figure 7The battery device 100 provided in this application also includes a circuit board 170, which includes a body portion 171, a transition portion 172 and a connecting portion 173 connected in sequence. The thickness direction of the transition portion 172 intersects the thickness direction of the body portion 171 and the thickness direction of the connecting portion 173.

[0183] The connector 173 is electrically connected to the temperature detector 140, which facilitates the temperature detector to transmit signals through the circuit board.

[0184] Along the first direction Z, the connecting portion 173 is disposed between the battery cell 121 and the cover plate 150, and the main body portion 171 is located on the side of the cover plate 150 away from the battery cell 121. In this way, the connecting portion 173 of the circuit board 170 can be staggered from the main body portion 171, which facilitates the electrical connection between the connecting portion 173 and the temperature detector 140.

[0185] The thickness direction of the transition portion 172 can be the second direction X, and the thickness directions of the body portion 171 and the connecting portion 173 can be the first direction Z. For example, the connecting portion 173 can be located on the side of the body portion 171 along the first direction Z close to the battery cell 121, so that the connecting portion 173 can be electrically connected to the temperature detector 140 that detects the temperature of the battery cell 121.

[0186] Optionally, the body portion 171 of the circuit board 170 may be located on the side of the first wall 1311 away from the battery cell 121 along the first direction Z, and the transition portion 172 may be located on the side of the first wall 1311 near the second wall 132 in the second direction X. This allows the body portion 171 of the circuit board 170 to avoid the first wall 1311. The transition portion 172 may be attached to the surface of the first wall 1311 near the second wall 132 in the second direction X, which helps improve the stability of the transition portion 172 and the connecting portion 173.

[0187] In some embodiments, please continue reading Figure 6 and Figure 7 The connection portion 173 of the circuit board 170 is located between the temperature detector 140 and the thermal pad 160. The temperature detector 140 is connected to the connection portion 173, and the thermal pad 160 is disposed between the connection portion 173 and the battery cell 121 (see...). Figure 5 )between.

[0188] Figure 6 and Figure 7 Only a portion of the circuit board 170 is shown. The connecting portion 173 can be made of a thermally conductive metal, which can conduct heat from the thermal pad 160 to the temperature detector 140. In addition, the circuit board 170 can be a flexible circuit board 170, so that the flexible circuit board 170 can be bent toward the battery cell 121 at the end of the first wall 1311 away from the battery cell 121.

[0189] It is understood that the temperature detector 140 can be connected to the connection part 173 of the circuit board 170, so that the temperature detector 140 can transmit the signal to the thermal management component through the circuit board 170. The thermal management component can adjust the working state of the battery cell 121 (e.g., adjust the voltage and current of the battery cell 121) according to the signal transmitted by the temperature detector 140, thereby adjusting the temperature inside the battery cell 121.

[0190] In some embodiments, the thermal conductivity of the connecting portion 173 is greater than or equal to that of the thermal pad 160. In this way, after the heat within the battery cell 121 is conducted to the thermal pad 160, the connecting portion 173 can promptly transfer the heat to the temperature detector 140, which helps improve the detection accuracy and sensitivity of the temperature detector 140.

[0191] Please continue reading. Figure 6 , Figure 7 and Figure 12 In some embodiments, the battery device 100 provided in this application also includes a reinforcing plate 180, which is located on the side of the temperature detector 140 away from the battery cell 121. When the cover plate 150 is connected to the separator plate 130, the cover plate 150 is disposed on the side of the reinforcing plate 180 away from the battery cell 121.

[0192] In this way, the reinforcing plate 180 can protect the temperature detector 140, which helps to prevent damage to the temperature detector 140 when the cover plate 150 moves.

[0193] Optionally, the area of ​​the reinforcing plate 180 is larger than the area of ​​the temperature detector 140, and the orthographic projection of the temperature detector 140 on the isolation plate 130 is located within the orthographic projection of the reinforcing plate 180 on the isolation plate 130, that is, the reinforcing plate 180 covers the temperature detector 140.

[0194] Optionally, a recessed portion may be provided on the side of the reinforcing plate 180 facing the battery cell 121, and part of the temperature detector 140 may be located in the recessed portion, which can help avoid misalignment between the temperature detector 140 and the reinforcing plate 180.

[0195] Please see Figure 12 In some embodiments, a groove 1503 is provided on the side of the cover plate 150 facing the battery cell 121, and the side of the reinforcing plate 180 away from the battery cell 121 is slidably connected to the groove 1503 along the second direction X. This allows the cover plate 150 to slide along the second direction X, which facilitates installation, disassembly and modification.

[0196] The reinforcing plate 180 has a protrusion 181 on the side facing the cover plate 150. The protrusion 181 can extend into the slide groove 1503 and can be slidably connected with the slide groove 1503 along the second direction X.

[0197] Optionally, at least a portion of the reinforcing plate 180 is disposed within the detection hole 1301, and the cover plate 150 is located on the side of the detection hole 1301 away from the battery cell. In this way, the hole wall of the detection hole 1301 can limit the reinforcing plate 180 in the second direction X, and when the cover plate 150 slides along the second direction X, the reinforcing plate 180 will not move with the cover plate 150, and the reinforcing plate 180 is less likely to be misaligned.

[0198] Please participate together Figures 5 to 9 In the battery device 100 provided in this embodiment, an isolation plate 130 is disposed on one side of the battery cell 121 along the first direction Z, and the isolation plate 130 has a detection hole 1301 that exposes the battery cell 121. The isolation plate 130 includes a first wall 1311 extending in a direction away from the battery cell 121, and an insertion hole 13111 is provided on one side of the first wall 1311 in the second direction X. The first direction Z intersects with the second direction X. A temperature detector 140 is disposed at the detection hole 1301 and is thermally connected to the battery cell 121. The temperature detector 140 is used to detect the temperature of the battery cell 121. A cover plate 150 is detachably connected to the isolation plate 130, and the cover plate 150 includes an insertion portion 152. When the cover plate 150 is connected to the separator plate 130, the cover plate 150 is located on the side of the temperature detector 140 away from the battery cell 121, which is used to prevent the temperature detector 140 from moving in the direction away from the battery cell 121, and the plug part 152 is inserted into the socket 13111; when the cover plate 150 is disconnected from the separator plate 130, the plug part 152 is disconnected from the socket 13111.

[0199] The separator 130 also includes a second wall 132 extending in a direction away from the battery cell 121. The second wall 132 is located on one side of the first wall 1311 in the second direction X. A limiting groove 1321 is provided on the side of the second wall 132 away from the first wall 1311. The cover plate 150 includes a limiting part 154. When the cover plate 150 is connected to the separator 130, the limiting part 154 is located in the limiting groove 1321. When the cover plate 150 is disengaged from the separator 130, the limiting part 154 disengages from the limiting groove 1321.

[0200] The cover plate 150 also includes a first snap-fit ​​portion 155, which is located on the side of the insertion portion 152 along the second direction X; the partition plate 130 includes a second snap-fit ​​portion 133. When the cover plate 150 is connected to the partition plate 130, the first snap-fit ​​portion 155 snaps into the second snap-fit ​​portion 133. The second snap-fit ​​portion 133 is used to prevent the cover plate 150 from moving along the second direction X and away from the first wall 1311.

[0201] In the second direction X, the first snap-fit ​​portion 155 is located between the insertion portion 152 and the limiting portion 154, and the second snap-fit ​​portion 133 is located between the first wall 1311 and the second wall 132.

[0202] The power-consuming device provided in this application includes the battery device 100 of any of the above embodiments. The power-consuming device provided in this application has the same or similar technical effects as the battery device 100 of any of the above embodiments, and will not be described again here.

[0203] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A battery device, characterized in that, include: Battery cell; An isolation plate is disposed on one side of the battery cell along a first direction and has a detection hole that exposes the battery cell. The isolation plate includes a first wall extending in a direction away from the battery cell. The first wall has an insertion hole with the axis of the insertion hole being a second direction. The first direction intersects the second direction. A temperature detector, which is disposed at the detection hole, is used to detect the temperature of the battery cell; as well as A cover plate is detachably connected to the isolation plate. The cover plate includes a main body and a plug-in portion connected to the main body. The cover plate is disposed on the side of the temperature detector away from the battery cell. The main body covers the temperature detector. The plug-in portion is inserted into the socket along the second direction to prevent the cover plate and the temperature detector from moving in the direction away from the battery cell.

2. The battery device as claimed in claim 1, characterized in that, The side of the connector away from the battery cell abuts against the wall of the socket.

3. The battery device as claimed in claim 1, characterized in that, Along the second direction, the insertion portion is disposed on the side of the main body facing the first wall.

4. The battery device as claimed in claim 1, characterized in that, The first wall is provided with two insertion holes, which are spaced apart along a third direction. The cover plate includes two insertion parts, which are spaced apart along the third direction. The two insertion parts are inserted into the two insertion holes one-to-one. The third direction intersects the first direction and the second direction.

5. The battery device as claimed in claim 1, characterized in that, The isolation plate also includes a second wall, which is located on one side of the first wall in the second direction, and a limiting groove is provided on the side of the second wall away from the first wall; The cover plate includes a limiting part connected to the main body. The limiting part is located in the limiting groove. Along the first direction, the side of the limiting part away from the battery cell abuts against the groove wall of the limiting groove to restrict the cover plate from moving away from the battery cell.

6. The battery device as claimed in claim 5, characterized in that, Along the second direction, the side of the limiting portion near the first wall abuts against the groove wall of the limiting groove to restrict the cover plate from moving toward the first wall.

7. The battery device as claimed in claim 5, characterized in that, The limiting portion is disposed on at least one side of the main body portion along a third direction, which intersects the first direction and the second direction.

8. The battery device as claimed in claim 5, characterized in that, There are two second walls, which are spaced apart along a third direction, and the third direction intersects the first direction and the second direction; Along the third direction, the main body is located between the two second walls.

9. The battery device as claimed in claim 1, characterized in that, The cover plate also includes a first snap-fit ​​portion connected to the main body portion, and along the second direction, the first snap-fit ​​portion is located on the side of the insertion portion away from the first wall; The isolation plate includes a second latching portion, and the first latching portion latches with the second latching portion. The second latching portion is used to prevent the cover plate from moving away from the first wall in the second direction.

10. The battery device as claimed in claim 9, characterized in that, The first snap-fit ​​portion extends in a direction away from the plug-in portion; the side of the first snap-fit ​​portion away from the plug-in portion abuts against the second snap-fit ​​portion.

11. The battery device as claimed in claim 9, characterized in that, The first snap-fit ​​portion includes a protruding portion that protrudes in the direction toward the battery cell, and the second snap-fit ​​portion includes a recessed portion that is recessed in the direction toward the battery cell; the protruding portion snaps into the recessed portion.

12. The battery device as claimed in claim 9, characterized in that, The first snap-fit ​​portion includes an elastic arm extending in a direction away from the first wall, a first end of the elastic arm in the second direction being connected to the plug-in portion, and a second end of the elastic arm in the second direction being a free end.

13. The battery device as claimed in claim 12, characterized in that, The second end of the elastic arm is provided with a bent portion that bends toward the battery cell, and the second snap-fit ​​portion includes a recessed portion that is recessed in the direction toward the battery cell, and at least a portion of the bent portion snaps into the recessed portion.

14. The battery device as claimed in claim 9, characterized in that, The isolation plate includes a stop portion located on the side of the second latching portion away from the first wall, and the stop portion is used to abut against the first latching portion.

15. The battery device as claimed in claim 5, characterized in that, The isolation plate also includes a third wall, which is disposed on at least one side of the first wall and the second wall along a third direction, at least one of the first wall and the second wall being connected to the third wall, and the third direction intersecting the first direction and the second direction.

16. The battery device according to any one of claims 1 to 15, characterized in that, The battery device also includes a thermal pad located between the temperature detector and the battery cell.

17. The battery device according to any one of claims 1 to 15, characterized in that, The battery device also includes a circuit board, which includes a body portion, a transition portion, and a connecting portion connected in sequence. The thickness direction of the transition portion intersects the thickness direction of the body portion and the thickness direction of the connecting portion. The connecting part is electrically connected to the temperature detector. Along the first direction, the connecting part is disposed between the battery cell and the cover plate, and the body part is located on the side of the cover plate away from the battery cell.

18. The battery device as claimed in claim 16, characterized in that, The battery device further includes a circuit board, which includes a connecting portion located between a temperature detector and a thermal pad. The temperature detector is connected to the connecting portion, and the thermal pad is disposed between the connecting portion and the battery cell.

19. The battery device as claimed in claim 18, characterized in that, The thermal conductivity of the connecting part is greater than or equal to that of the thermal pad.

20. The battery device according to any one of claims 1 to 15, characterized in that, The battery device also includes a reinforcing plate located on the side of the temperature detector away from the battery cell, and a cover plate disposed on the side of the reinforcing plate opposite to the battery cell.

21. The battery device as claimed in claim 20, characterized in that, The cover plate has a groove on the side facing the battery cell, and the reinforcing plate is slidably connected to the groove along the second direction on the side away from the battery cell.

22. The battery device as claimed in claim 20, characterized in that, At least a portion of the reinforcing plate is disposed within the detection hole, and the cover plate is located on the side of the detection hole away from the battery cell.

23. The battery device according to any one of claims 1 to 15, characterized in that, The separator includes a groove recessed in a direction away from the battery cell, and the groove wall includes the first wall.

24. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1 to 23.

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