Battery device and electric device

Abstract

The embodiment of the utility model provides a battery device and a power utilization device. The battery device comprises a battery monomer, a bus piece and a temperature acquisition assembly, the battery monomer comprises a shell and an electrode terminal, the shell comprises a first wall, and the electrode terminal is arranged on the first wall; the confluence piece is electrically connected with the electrode terminals of the at least two battery monomers; the temperature acquisition assembly is in heat conduction connection with the first wall and is used for acquiring the temperature of the battery monomers; the temperature acquisition assembly comprises an insulating part and a temperature acquisition part, and the temperature acquisition part is arranged in the insulating part; wherein a heat insulation piece is arranged between the insulation piece and the confluence piece, and the insulation piece is installed on the confluence piece through the heat insulation piece. According to the technical scheme provided by the invention, the reliability of the battery device is improved.

Description

Technical Field

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

[0002] In recent years, new energy vehicles have had a leapfrog development. In the field of electric vehicles, power batteries, as the power source of electric vehicles, play an irreplaceable and important role. With the strong promotion of new energy vehicles, the demand for power battery products is also increasing day by day. Among them, battery devices, as the core components of new energy vehicles, have relatively high requirements in terms of use stability and reliability.

[0003] In battery technology, in order to ensure the safety of battery cells, a temperature acquisition component is generally arranged in the battery device. Through the temperature acquisition component, the temperature of the battery cell during use can be acquired and monitored, so as to obtain the usage situation of the battery device. However, the temperature sampling component in the existing battery device is prone to inaccurate temperature acquisition during use, so that the usage situation of the battery cell inside the battery device cannot be effectively obtained, which is not conducive to improving the use stability and reliability of the battery device. Summary of the Utility Model

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

[0005] The present application is implemented through the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides a battery device. The battery device includes battery cells, a bus bar, and a temperature acquisition component. The battery cell includes a housing and electrode terminals. The housing includes a first wall, and the electrode terminals are arranged on the first wall; the bus bar is electrically connected to the electrode terminals of at least two battery cells; the temperature acquisition component is thermally connected to the first wall, and the temperature acquisition component is used to acquire the temperature of the battery cell; the temperature acquisition component includes an insulating member and a temperature acquisition part, and the temperature acquisition part is arranged inside the insulating member; wherein, a heat insulation member is arranged between the insulating member and the bus bar, and the insulating member is mounted on the bus bar through the heat insulation member.

[0007] In the technical solution of the embodiment of the present application, the insulating member can play a function of encapsulating and protecting the temperature acquisition part, so that the temperature acquisition part is not exposed to the outside. By arranging a heat insulation member between the insulating member and the bus bar, the heat insulation member can prevent the temperature acquisition component from directly contacting the bus bar. Due to the heat insulation performance of the heat insulation member itself, it can effectively reduce the influence of the heat radiation generated by the excessive temperature of the bus bar after heating on the sampling accuracy of the temperature acquisition component, thereby improving the accuracy of the temperature acquisition component for acquiring the temperature of the battery cell, facilitating the real-time control of the battery cell, and further being beneficial to improving the reliable performance of the battery device.

[0008] According to some embodiments of the present application, the heat insulation member is snap-connected to the busbar member; and / or, the insulating member is snap-connected to the heat insulation member.

[0009] In the above solution, the heat insulation member and the busbar member are connected by snap connection. The installation and connection of the heat insulation member and the busbar member are convenient. While ensuring the reliable connection between the heat insulation member and the busbar member, the assembly difficulty of the heat insulation member is reduced. And when the heat insulation member needs to be maintained and replaced later, it is beneficial to quickly install and disassemble the heat insulation member. The insulating member and the heat insulation member are connected by snap connection, and the temperature acquisition assembly is installed conveniently and quickly. While ensuring the reliable connection between the temperature acquisition assembly and the heat insulation member, the installation difficulty of the temperature acquisition assembly is reduced. And when the temperature acquisition assembly needs to be maintained and replaced later, the temperature acquisition assembly can be quickly disassembled, and the temperature acquisition assembly is convenient to install and disassemble.

[0010] According to some embodiments of the present application, the busbar member has a notch, the heat insulation member is disposed in the notch, and a clamping groove is provided on the outer peripheral side of the heat insulation member, and the clamping groove is snap-connected to the peripheral edge of the notch.

[0011] In the above solution, by providing a notch on the busbar member and a clamping groove on the outer peripheral side of the heat insulation member, the heat insulation member is snapped into the opening of the notch, and the peripheral edge of the notch provides a supporting effect for the heat insulation member. The heat insulation member can be installed on the busbar member relatively quickly and stably, and the clamping groove on the outer peripheral side of the heat insulation member is snap-connected to the peripheral edge of the notch, so the installation of the heat insulation member is convenient and fast.

[0012] According to some embodiments of the present application, the peripheral edge of the notch includes two first edges spaced along a first direction and a second edge connecting the two first edges; the heat insulation member includes a connecting portion and two clamping portions, the two clamping portions are spaced along the first direction, and the connecting portion connects the two clamping portions; a first clamping groove is provided on one side of each clamping portion facing away from the other clamping portion, and the first clamping groove is snap-connected to the first edge.

[0013] In the above solution, since the edge of the notch includes two first edges and the heat insulation member includes two clamping portions, and the two first clamping grooves on the two clamping portions are respectively snap-connected to the two first edges. When installing the heat insulation member, only the two clamping portions of the heat insulation member need to be slid and snapped along the extending direction of the two first edges of the notch, and the installation of the heat insulation member is convenient and fast. Moreover, the two clamping portions cooperate with the two first edges to realize the snap connection and fixation of the heat insulation member at two points on the notch, and the two first edges can provide relatively stable support and positioning for the heat insulation member.

[0014] According to some embodiments of the present application, a second clamping groove is provided on the connecting portion, and the second clamping groove is snap-connected to the second edge.

[0015] In the above solution, a second card slot is provided on the connecting portion. The heat insulation member is clamped to the first edge of the notch through the first card slot, and the second card slot on the heat insulation member is clamped to the second edge. In this way, each side on the peripheral side of the heat insulation member is clamped and matched with each edge of the notch, and the clamping area between the heat insulation member and the notch is larger, and the stability of the heat insulation member installed on the notch of the busbar member is higher, correspondingly improving the installation stability of the temperature acquisition assembly.

[0016] According to some embodiments of the present application, the first card slot communicates with the second card slot.

[0017] In the above solution, the first card slot is communicated with the second card slot, so that the peripheral side of the heat insulation member can be clamped to the first edge or the second edge of the notch. There is no clamping blind area on the heat insulation member. While the clamping area between the heat insulation member and the notch is larger, the force transmission between the heat insulation member and the notch of the busbar member is more uniform and stable, and the heat insulation member is not prone to local fracture or instability.

[0018] According to some embodiments of the present application, the insulating member is clamped to the heat insulation member.

[0019] In the above solution, the temperature acquisition assembly is clamped to the heat insulation member through the insulating member. In addition to the function of encapsulation and insulation, the insulating member also plays an installation role for the temperature acquisition component, enabling the temperature acquisition assembly to be clamped to the heat insulation member.

[0020] According to some embodiments of the present application, the insulating member is located between the two clamping portions. Third card slots are provided on both sides of the insulating member along the first direction, and protrusions are provided on the side of the two clamping portions facing each other. The protrusions are clamped to the third card slots.

[0021] In the above solution, by providing third card slots on both sides of the insulating member along the first direction, and protrusions are provided on the side of the two clamping portions facing each other. When installing the temperature acquisition assembly, the two protrusions are clamped and matched with the two third card slots. Only need to slide the two third card slots of the insulating member along the extending direction of the protrusions on the heat insulation member and snap them in. The two protrusions on the heat insulation member can provide support and limiting functions for both sides of the insulating member in the first direction. The installation of the temperature acquisition assembly is convenient and fast, and the installation stability of the temperature acquisition assembly is high.

[0022] According to some embodiments of the present application, the temperature acquisition assembly further includes a conductive member, the battery device further includes a circuit board, and the temperature acquisition component is electrically connected to the circuit board through the conductive member.

[0023] In the above solution, the temperature acquisition component is electrically connected to the circuit board through the conductive member, thereby realizing signal transmission of the temperature acquisition component and power supply to the temperature acquisition component.

[0024] According to some embodiments of the present application, the temperature acquisition component further includes a heat conduction pad, and the temperature acquisition component is thermally connected to the first wall through the heat conduction pad.

[0025] In the above solution, with the setting of the heat conduction pad and the thermal connection between the heat conduction pad and the first wall, the temperature acquisition component can collect the temperature of the first wall of the battery cell through the heat conduction pad, reduce the heat loss, and improve the accuracy of the temperature collected by the temperature acquisition component.

[0026] According to some embodiments of the present application, the heat insulation member is made of an insulating material.

[0027] In the above solution, by using an insulating material for the heat insulation member, it is not easy to have a short - circuit phenomenon between the bus bar and the temperature acquisition component, reducing the short - circuit risk.

[0028] According to some embodiments of the present application, the material of the heat insulation member is plastic.

[0029] In the above solution, by using plastic as the material of the heat insulation member, since the plastic has poor heat conduction performance, the heat insulation performance of the heat insulation member can be effectively guaranteed.

[0030] In a second aspect, embodiments of the present application further provide an electrical device, which includes the battery device of any of the foregoing embodiments, and the electrical device is used to provide electrical energy.

[0031] For the electrical device provided by the embodiments of the present application, since it adopts the battery device provided by any of the above embodiments, it has the same technical effects, which will not be elaborated herein.

[0032] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can be obtained based on these drawings.

[0034] Figure 1 It is a schematic structural diagram of a vehicle provided by some embodiments of the present application;

[0035] Figure 2 It is an exploded structural diagram of a battery device provided by some embodiments of the present application;

[0036] Figure 3 It is an exploded view of a battery cell in a battery device provided by some embodiments of the present application;

[0037] Figure 4 A partial structural schematic diagram between a temperature acquisition component and a busbar in a battery device provided in some embodiments of the present application;

[0038] Figure 5 A partial structural schematic diagram of installing a temperature acquisition component in a battery device provided in some embodiments of the present application onto a busbar;

[0039] Figure 6 A structural schematic diagram of a temperature acquisition component and a heat insulation member in a battery device provided in some embodiments of the present application;

[0040] Figure 7 A front view of a heat insulation member in a battery device provided in some embodiments of the present application;

[0041] Figure 8 A partial schematic diagram of a battery device provided in some embodiments of the present application.

[0042] Reference numerals: 1000 - vehicle; 100 - battery device; 200 - controller; 300 - motor; 10 - box body; 11 - first sub - box body; 12 - second sub - box body; 20 - battery cell; 21 - outer shell; 211 - housing; 212 - end cover; 213 - first wall; 22 - electrode assembly; 23 - electrode terminal; 30 - busbar; 31 - notch; 311 - first edge; 312 - second edge; 40 - temperature acquisition component; 41 - insulating member; 411 - third card slot; 42 - temperature acquisition part; 43 - conductive member; 44 - heat conducting pad; 50 - heat insulation member; 51 - clamping part; 511 - first card slot; 512 - protrusion; 52 - connecting part; 521 - second card slot; 60 - circuit board; X - first direction. Detailed implementation manners

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0044] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; 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" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order or primary-secondary relationship.

[0045] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0046] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] The term "and / or" in this application is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally represents an "or" relationship between the associated objects before and after.

[0048] The term "plurality" as used in this application refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0049] The battery device (BatteryApparatus) mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly (BatteryCellAssembly) may include a plurality of battery cells, and the plurality of battery cells are connected in series, parallel, or in a hybrid connection through a busbar component.

[0050] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, the battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells into an independent module. As an example, the battery module can be formed by bundling multiple battery cells with cable ties.

[0051] In some embodiments, the battery device can be a battery pack, which includes a box body and one or more battery cell assemblies, and the battery cell assemblies are accommodated in the box body.

[0052] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be accommodated in the box body by fixing the battery module in the box body.

[0053] As an example, the battery cell assembly can also be accommodated in the box body by directly fixing multiple battery cells to the box body.

[0054] In some embodiments, the box body can be part of the chassis structure of a vehicle. For example, part of the box body can become at least part of the floor of the vehicle, or part of the box body can become at least part of the crossbeam and longitudinal beam of the vehicle.

[0055] In some embodiments, the battery device can be an energy storage device. The energy storage device includes an energy storage container, an energy storage electrical cabinet, etc.

[0056] In the embodiments of the present application, the battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging so as to continue to be used.

[0057] The battery cell can be, but is not limited to, a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc.

[0058] The battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and extracted back and forth between the positive electrode and the negative electrode. The separator is arranged between the positive electrode and the negative electrode, which can play a role in preventing short circuit between the positive and negative electrodes, and at the same time can allow active ions to pass through.

[0059] In some embodiments, the positive electrode can be a positive electrode plate, and the positive electrode plate can include a positive electrode current collector and a positive electrode active material provided on at least one surface of the positive electrode current collector.

[0060] As an example, the positive electrode current collector has two surfaces opposite to each other in its own thickness direction, and the positive electrode active material is disposed on either or both of the two opposite surfaces of the positive electrode current collector.

[0061] As an example, the positive electrode current collector can be a metal foil or a composite current collector. For example, as the metal foil, stainless steel with a silver-plated surface, stainless steel, copper, aluminum, carbon electrode, carbon, nickel, or titanium, etc. can be used. The composite current collector can include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (such as aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver, and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0062] As an example, the positive electrode active material can include at least one of the following materials: lithium-containing phosphate, lithium transition metal oxide, and their respective modified compounds. However, the present application is not limited to these materials, and other conventional materials that can be used as the positive electrode active material of the battery cell can also be used.

[0063] In some embodiments, the negative electrode can be a negative electrode sheet, and the negative electrode sheet can include a negative electrode current collector.

[0064] As an example, the negative electrode current collector can be a metal foil or a composite current collector. For example, as the metal foil, aluminum with a silver-plated surface, stainless steel with a silver-plated surface, stainless steel, copper, aluminum, carbon electrode, carbon, nickel, or titanium, etc. can be used.

[0065] In some embodiments, the negative electrode current collector has two surfaces opposite to each other in its own thickness direction, and the negative electrode active material is disposed on either or both of the two opposite surfaces of the negative electrode current collector.

[0066] As an example, the negative electrode active material can be a negative electrode active material for a battery cell well-known in the art. As an example, the negative electrode active material can include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based material, tin-based material, and lithium titanate, etc. The silicon-based material can be selected from at least one of elemental silicon, silicon oxide compound, silicon-carbon composite, silicon-nitrogen composite, and silicon alloy. The tin-based material can be selected from at least one of elemental tin, tin oxide compound, and tin alloy. However, the present application is not limited to these materials, and other conventional materials that can be used as the negative electrode active material of the battery cell can also be used. These negative electrode active materials can be used alone or in combination of two or more.

[0067] In some embodiments, the separator is an isolation film. The present application does not particularly limit the type of the isolation film, and any well-known porous structure isolation film with good chemical stability and mechanical stability can be selected.

[0068] As an example, the main material of the separator can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramics. The separator can be a single-layer film or a multi-layer composite film, without particular limitation. When the separator is a multi-layer composite film, the materials of each layer can be the same or different, without particular limitation. The separator can be a separate component located between the positive and negative electrodes, or can be attached to the surfaces of the positive and negative electrodes.

[0069] In some embodiments, the separator is a solid electrolyte. The solid electrolyte is disposed between the positive electrode and the negative electrode, and simultaneously functions to transport ions and isolate the positive and negative electrodes.

[0070] In some embodiments, the electrode assembly is a wound structure. The positive electrode sheet and the negative electrode sheet are wound into a wound structure.

[0071] In some embodiments, the electrode assembly is a stacked structure.

[0072] In some embodiments, the battery cell may include a housing. The housing is used to encapsulate components such as the electrode assembly and the electrolyte. The housing can be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), or an aluminum-plastic film, etc.

[0073] In some embodiments, the housing includes an end cap and a housing body. The housing body is provided with an opening, and the end cap closes the opening to form a sealed space for accommodating substances such as the electrode assembly and the electrolyte. The housing body can be provided with one or more openings. One or more end caps can also be provided.

[0074] In some embodiments, at least one electrode terminal is provided on the housing, and the electrode terminal is electrically connected to the tab of the electrode assembly. The electrode terminal can be directly connected to the tab or indirectly connected to the tab through a current collector. The electrode terminal can be provided on the end cap or on the housing body.

[0075] In some embodiments, a pressure relief valve is provided on the housing. The pressure relief valve is used to release the internal pressure of the battery cell.

[0076] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch 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 multi-prismatic battery, and the multi-prismatic battery is, for example, a hexagonal prism battery, etc. There is no particular limitation in the embodiments of the present application.

[0077] In a battery, the temperature of the first wall provided with electrode terminals in a battery cell is usually measured to reflect the temperature of the battery cell, and the working process of the battery is controlled according to the measured temperature. As the smallest unit for energy storage and release in the battery, during the charging or discharging process of the battery cell, current needs to flow through the electrode terminals. The bus bar is arranged between the electronic terminals of two adjacent battery cells, and the temperature acquisition component is usually directly clamped on the bus bar. The temperature acquisition component acquires the temperature of the first wall of the battery cell. However, when the temperature of the bus bar rises too high, heat radiation will be generated, which will affect the sampling accuracy of the temperature acquisition component on the bus bar. Especially with the application of the fast charging technology of the battery, during the fast charging process of the battery, the current flowing through the electrode terminals is greater, and there is a risk of a higher temperature on the bus bar. Thus, it affects the accuracy of the temperature measurement of the battery cell, is not convenient for real-time control of the battery cell, and further affects the reliable performance of the battery.

[0078] In view of this, to solve the problem of inaccurate temperature measurement of the battery cell, some embodiments of the present application provide a battery device. The battery device includes a battery cell, a bus bar, and a temperature acquisition component. The battery cell includes a housing and electrode terminals. The housing includes a first wall, and the electrode terminals are arranged on the first wall. The bus bar is electrically connected to the electrode terminals of at least two battery cells. The temperature acquisition component is thermally connected to the first wall, and the temperature acquisition component is used to acquire the temperature of the battery cell. Wherein, a heat insulation member is arranged between the temperature acquisition component and the bus bar, and the temperature acquisition component is installed on the bus bar through the heat insulation member.

[0079] For the battery device provided by the embodiments of the present application, by arranging a heat insulation member between the temperature acquisition component and the bus bar, the heat insulation member can prevent the temperature acquisition component from directly contacting the bus bar. Due to the heat insulation performance of the heat insulation member itself, it can effectively reduce the influence of heat radiation generated by the too high temperature of the bus bar after heating on the sampling accuracy of the temperature acquisition component, thereby improving the accuracy of the temperature acquisition component for acquiring the temperature of the battery cell, facilitating the real-time control of the battery cell, and further being beneficial to improving the reliable performance of the battery device.

[0080] The battery device disclosed in the embodiments of the present application can be but is not limited to being used in electrical equipment such as vehicles, ships, or aircraft. The power supply system of the electrical equipment can be composed of the battery device disclosed in the present application.

[0081] The technical solutions described in the embodiments of the present application are applicable to various electrical equipment using battery cells and battery devices, such as mobile phones, portable devices, laptop computers, battery cars, electric toys, electric tools, vehicles, ships, and spacecrafts. For example, spacecrafts include airplanes, rockets, space shuttles, and spaceships, etc.

[0082] For the convenience of description, the following embodiments will take a vehicle, which is an electrical device in an embodiment of the present application, as an example for illustration.

[0083] Please refer to Figure 1 , Figure 1 , which is a schematic structural diagram of a vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, an extended-range vehicle, etc. A battery device 100 is disposed inside the vehicle 1000. The battery device 100 can be disposed at the bottom, the head, or the tail of the vehicle 1000. The battery device 100 can be used for power supply of the vehicle 1000. For example, the battery device 100 can serve as an operating power source of the vehicle 1000 and be used for the circuit system of the vehicle 1000, such as the working power consumption requirements for starting, navigating, and running of the vehicle 1000.

[0084] The vehicle 1000 may further 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, it is used for the working power consumption requirements for starting, navigating, and driving of the vehicle 1000.

[0085] In some embodiments of the present application, the battery device 100 can not only serve as an operating power source of the vehicle 1000, but also serve as a driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0086] Please refer to Figure 2 , Figure 2 , which is a schematic exploded view of the structure of the battery device 100 provided in some embodiments of the present application. The battery device 100 includes a box body 10 and battery cells 20. The battery cells 20 are accommodated in the box body 10. Among them, the box body 10 is used to provide an accommodation space for the battery cells 20, and the box body 10 can adopt various structures. In some embodiments, the box body 10 may include a first sub-box body 11 and a second sub-box body 12. The first sub-box body 11 and the second sub-box body 12 are covered with each other, and the first sub-box body 11 and the second sub-box body 12 jointly define an accommodation space for accommodating the battery cells 20. The second sub-box body 12 can be a hollow structure with one end open, and the first sub-box body 11 can be a plate-like structure. The first sub-box body 11 covers the open side of the second sub-box body 12 so that the first sub-box body 11 and the second sub-box body 12 jointly define an accommodation space; the first sub-box body 11 and the second sub-box body 12 can also both be hollow structures with one side open, and the open side of the first sub-box body 11 covers the open side of the second sub-box body 12.

[0087] In the battery device 100, there can be multiple battery cells 20. The multiple battery cells 20 can be connected in series, parallel, or in a combined series-parallel connection. A combined series-parallel connection means that among the multiple battery cells 20, there are both series and parallel connections. The multiple battery cells 20 can be directly connected in series, parallel, or in a combined series-parallel connection together, and then the whole formed by the multiple battery cells 20 is accommodated in the box 10. Of course, in the battery device 100, multiple battery cells 20 can also be first connected in series, parallel, or in a combined series-parallel connection to form a battery module, and then multiple battery modules are connected in series, parallel, or in a combined series-parallel connection to form a whole and are accommodated in the box 10.

[0088] The battery device 100 can also include other structures. For example, the battery device 100 can also include a busbar for realizing the electrical connection between the multiple battery cells 20.

[0089] Please refer to Figure 3 , Figure 3 , which is a schematic diagram of the explosion structure of the battery cell 20 provided by the embodiment of the present application. The battery cell 20 includes a housing 21, an electrode assembly 22, and electrode terminals 23. The housing 21 includes a shell 211 and an end cap 212. The shell 211 has an opening, and the end cap 212 closes the opening to isolate the internal environment of the battery cell 20 from the external environment.

[0090] The shell 211 is a component for cooperating with the end cap 212 to form the internal environment of the battery cell 20. Among them, the formed internal environment can be used to accommodate the electrode assembly 22, the electrolyte, and other components. The shell 211 and the end cap 212 can be independent components. The shell 211 can be of various shapes and sizes. Specifically, the shape of the shell 211 can be determined according to the specific shape and size of the electrode assembly 22. The material of the shell 211 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0091] The end cap 212 is a component that covers the opening of the shell 211 to isolate the internal environment of the battery cell 20 from the external environment. Without limitation, the shape of the end cap 212 can be adapted to the shape of the shell 211 to cooperate with the shell 211. Optionally, the end cap 212 can be made of a material with a certain hardness and strength (such as aluminum alloy). In this way, the end cap 212 is not easily deformed when being squeezed or collided, enabling the battery cell 20 to have higher structural strength and improved reliability. Functional components such as the electrode terminals 23 can be provided on the end cap 212. The electrode terminals 23 can be used to electrically connect with the electrode assembly 22 for outputting or inputting the electric energy of the battery cell 20. The material of the end cap 212 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not make special restrictions on this.

[0092] The electrode assembly 22 is a component in the battery cell 20 where electrochemical reactions occur. One or more electrode assemblies 22 may be included within the housing 211.

[0093] An embodiment of the present application provides a battery device. Please refer to Figures 2 to 8 , the battery device 100 includes a battery cell 20, a bus bar 30, and a temperature acquisition component 40. The battery cell 20 includes a housing 21 and electrode terminals. The housing includes a first wall 213, and the electrode terminals are disposed on the first wall 213; the bus bar 30 is electrically connected to the electrode terminals of at least two battery cells 20; the temperature acquisition component 40 is thermally connected to the first wall 213, and the temperature acquisition component 40 is used to acquire the temperature of the battery cell 20. The temperature acquisition component 40 includes an insulating member 41 and a temperature acquisition component 42, and the temperature acquisition component 42 is disposed within the insulating member 41; wherein, a heat insulation member 50 is disposed between the insulating member 41 and the bus bar 30, and the insulating member 41 is mounted on the bus bar 30 through the heat insulation member 50.

[0094] Please refer to Figure 3 , the housing 21 includes a first wall 213. Optionally, the first wall 213 may be at least part of the end cap 212 of the housing 21, or the first wall 213 may be a part of the housing body 211 of the housing 21. The electrode terminal 23 is disposed on the first wall 213. The electrode terminal 23 may be insulatingly connected to the first wall 213 by means of riveting or injection molding connection, etc. One or two electrode terminals 23 may be provided on one first wall 213.

[0095] Please refer to Figure 3 and Figure 4 , if the bus bar 30 is electrically connected to the electrode terminals 23 of two battery cells 20, then series or parallel connection of different battery cells 20 can be achieved through the bus bar 30. Optionally, the bus bar 30 may connect the electrode terminals 23 with the same polarity of two battery cells 20 to facilitate the parallel connection of the battery cells 20, or the bus bar 30 may connect the electrode terminals 23 with different polarities of two battery cells 20 to facilitate the series connection of the battery cells 20.

[0096] The heat insulation member 50 refers to a heat insulation component disposed between the temperature acquisition component 40 and the bus bar 30. The material of the heat insulation member 50 is a heat insulation material. The material of the heat insulation member 50 may be plastic. Plastic is a poor conductor of heat, with slow heat conduction and slow heat dissipation, which can slow down the heat dissipation of an object. Therefore, it can be used as a heat insulation material. Of course, the material of the heat insulation member 50 may also be other materials, and details will not be elaborated here one by one.

[0097] The temperature acquisition component 40 refers to a monitoring component that can achieve the function of acquiring the temperature of the battery cell 20.

[0098] The temperature acquisition component 42 refers to a monitoring component that can implement the temperature monitoring function. The temperature acquisition component 42 can be an NTC (Negative Temperature Coefficient thermistor). The negative temperature coefficient thermistor is also known as an NTC thermistor, which is a type of sensor resistor whose resistance value decreases as the temperature increases.

[0099] The insulating component 41 refers to a packaging component that can provide the installation function and insulation function for the temperature acquisition component 42. The insulating component 41 is encapsulated outside the temperature acquisition component 42, and the insulating component 41 functions as insulation and partial heat insulation for the temperature acquisition component 42. The material of the insulating component 41 can be plastic or plastics, etc.

[0100] The insulating component 41 is installed on the bus bar component 30 through the heat insulation component 50, which means that the temperature acquisition component 40 is not directly installed on the bus bar component 30. Instead, a heat insulation component 50 is provided on the bus bar component 30, and the temperature acquisition component 40 is installed on the bus bar component 30 through the heat insulation component 50, and the temperature acquisition component 40 does not directly contact the bus bar component 30.

[0101] The connection method between the heat insulation component 50 and the bus bar component 30 can be various. The connection method between the heat insulation component 50 and the bus bar component 30 can be snap connection, welding or bonding, etc. Of course, the connection method between the insulating component 41 and the heat insulation component 50 can also be various. The insulating component 41 and the heat insulation component 50 can be connected by snap connection, welding or bonding, etc.

[0102] In the technical solution of the embodiment of the present application, the insulating component 41 can function as encapsulation and protection for the temperature acquisition component 42, so that the temperature acquisition component 42 is not exposed to the outside. By providing a heat insulation component 50 between the insulating component 41 and the bus bar component 30, the heat insulation component 50 can prevent the temperature acquisition component 40 from directly contacting the bus bar component 30. Due to the heat insulation performance of the heat insulation component 50 itself, it can effectively reduce the influence of the heat radiation generated by the over-high temperature of the bus bar component 30 after heating on the sampling accuracy of the temperature acquisition component 40, thereby improving the accuracy of the temperature acquisition component 40 for collecting the temperature of the battery cell 20, facilitating the real-time control of the battery cell 20, and further being beneficial to improving the reliable performance of the battery device 100.

[0103] According to some embodiments of the present application, please refer to Figure 4 、 Figure 5 and Figure 6 , the heat insulation component 50 is snap-connected to the bus bar component 30; and / or, the insulating component 41 is snap-connected to the heat insulation component 50.

[0104] The heat insulation member 50 is snap-connected to the busbar member 30; and / or, the insulating member 41 is snap-connected to the heat insulation member 50. There are three cases. It can be that the heat insulation member 50 is snap-connected to the busbar member 30 and the insulating member 41 is not snap-connected to the heat insulation member 50. It can also be that the heat insulation member 50 is not snap-connected to the busbar member 30, while the insulating member 41 is snap-connected to the heat insulation member 50. It can also be that the heat insulation member 50 is snap-connected to the busbar member 30 and the insulating member 41 is also snap-connected to the heat insulation member 50.

[0105] The connection method between the heat insulation member 50 and the busbar member 30 is snap connection. The installation and connection of the heat insulation member 50 and the busbar member 30 are convenient. On the premise of ensuring the reliable connection between the heat insulation member 50 and the busbar member 30, the assembly difficulty of the heat insulation member 50 is reduced, and when the heat insulation member 50 is maintained and replaced later, it is beneficial to the quick installation and disassembly of the heat insulation member 50. The connection method between the insulating member 41 and the heat insulation member 50 is snap connection, and the temperature acquisition assembly 40 is installed conveniently and quickly. On the premise of ensuring the reliable connection between the temperature acquisition assembly 40 and the heat insulation member 50, the installation difficulty of the temperature acquisition assembly 40 is reduced, and when the temperature acquisition assembly 40 needs to be maintained and replaced later, the temperature acquisition assembly 40 can be quickly disassembled, and the temperature acquisition assembly 40 is convenient to install and disassemble.

[0106] According to some embodiments of the present application, please refer to Figure 4 , the busbar member 30 has a notch 31, the heat insulation member 50 is arranged in the notch 31, a card slot is arranged on the outer peripheral side of the heat insulation member 50, and the card slot is snap-connected to the periphery of the notch 31.

[0107] The notch 31 refers to a gap formed by missing a piece on the busbar member 30, and the periphery of the notch 31 refers to the edge part around the mouth of the notch 31. The heat insulation member 50 is arranged in the notch 31, which means that the heat insulation member 50 is filled and arranged at the notch 31 on the busbar member 30, and at least part of the notch 31 is filled by the heat insulation member 50.

[0108] A card slot is arranged on the outer peripheral side of the heat insulation member 50, which means that a groove structure is arranged on the outer peripheral side of the heat insulation member 50. The card slot extends along the circumferential direction of the heat insulation member 50, and the card slot of the heat insulation member 50 is stuck to the periphery of the notch 31, so that the heat insulation member 50 is installed at the notch 31 of the busbar member 30. The shape of the notch 31 can be various. The shape of the notch 31 can be a square notch 31, or a triangular or trapezoidal notch 31, and the shape of the heat insulation member 50 is adapted to the shape of the notch 31. For example, when the shape of the notch 31 is a square notch 31, then the shape of the heat insulation member 50 is a door shape, and the heat insulation member 50 is clamped to the periphery of the notch 31 through the card slot on the outer peripheral side.

[0109] By providing a notch 31 on the bus bar 30 and arranging a clamping groove on the outer peripheral side of the heat insulation member 50, the heat insulation member 50 is snapped into the bus bar 30 from the opening of the notch 31. The periphery of the notch 31 provides a supporting effect on the heat insulation member 50, enabling the heat insulation member 50 to be installed on the bus bar 30 quickly and stably. Moreover, the clamping groove on the outer peripheral side of the heat insulation member 50 is clamped with the periphery of the notch 31, making the installation of the heat insulation member 50 convenient and fast.

[0110] According to some embodiments of the present application, please refer to Figure 4 and Figure 6 , the periphery of the notch 31 includes two first edges 311 arranged at intervals along the first direction X and a second edge 312 connecting the two first edges 311; the heat insulation member 50 includes a connecting portion 52 and two clamping portions 51, the two clamping portions 51 are arranged at intervals along the first direction X, and the connecting portion 52 connects the two clamping portions 51; a first clamping groove 511 is arranged on one side of each clamping portion 51 facing away from the other clamping portion 51, and the first clamping groove 511 is clamped with the first edge 311.

[0111] The first direction X may refer to the extending direction of the opening of the notch 31. The two first edges 311 respectively refer to the edges on both sides of the notch 31 in the first direction X, and the second edge 312 refers to the edge portion between the two first edges 311 on the bus bar 30. One side of each clamping portion 51 facing away from the other clamping portion 51 refers to the side where the two clamping portions 51 face away from each other, that is, the side where the clamping portion 51 cooperates with the first edge 311 of the notch 31.

[0112] Since the periphery of the notch 31 includes two first edges 311 and the heat insulation member 50 includes two clamping portions 51, and the two first clamping grooves 511 on the two clamping portions 51 are respectively clamped with the two first edges 311. When installing the heat insulation member 50, it only needs to slide the two clamping portions 51 of the heat insulation member 50 along the extending direction of the two first edges 311 of the notch 31 and snap them in. The installation of the heat insulation member 50 is convenient and fast. Moreover, the two clamping portions 51 cooperate with the two first edges 311 to realize the clamping and fixing of the heat insulation member 50 at two points on the notch 31, and the two first edges 311 can provide a relatively stable supporting and positioning effect on the heat insulation member 50.

[0113] According to some embodiments of the present application, please combine Figure 4 and Figure 6 , a second clamping groove 521 is arranged on the connecting portion 52, and the second clamping groove 521 is clamped with the second edge 312.

[0114] The second card slot 521 refers to a card slot structure provided on the connecting portion 52, and the second card slot 521 is located on a side of the connecting portion 52 away from the clamping portion 51. The second card slot 521 is provided at a different position from the first card slot 511, and the second card slot 521 may be connected to the first card slot 511 on the clamping portion 51, or may not be connected to the first card slot 511.

[0115] By providing a second slot 521 on the connecting portion 52, the thermal insulation member 50 is snap-fitted with the first edge 311 of the notch 31 through the first slot 511, and the second slot 521 on the thermal insulation member 50 is snap-fitted with the second edge 312, so that each side of the peripheral side of the thermal insulation member 50 is snap-fitted with each edge of the notch 31, the snap-fitting area between the thermal insulation member 50 and the notch 31 is larger, the stability of the thermal insulation member 50 installed on the notch 31 of the collector 30 is higher, and the installation stability of the temperature collection component 40 is correspondingly improved.

[0116] According to some embodiments of the present application, the first card slot 511 is connected to the second card slot 521 .

[0117] The first card slot 511 is connected to the second card slot 521 in communication, which means that two ends of the second card slot 521 in the first direction X are respectively connected to the two first card slots 511 on the two clamping parts 51 .

[0118] The first card slot 511 and the second card slot 521 are connected, so that the surrounding sides of the thermal insulation member 50 can be snap-fitted with the first edge 311 or the second edge 312 of the notch 31. There is no blind spot for snapping on the thermal insulation member 50. The snap-fitting area between the thermal insulation member 50 and the notch 31 is larger. At the same time, the force transmission between the thermal insulation member 50 and the notch 31 of the collector 30 is more uniform and stable, and the thermal insulation member 50 is not prone to local fracture or instability.

[0119] According to some embodiments of this application, please refer to Figure 6 The insulating member 41 is engaged with the heat insulating member 50 .

[0120] The temperature collection component 40 is connected to the heat insulating component 50 through the insulating component 41. In addition to the function of packaging and insulation, the insulating component 41 also plays a role in installing the temperature collection component 42, allowing the temperature collection component 40 to be connected to the heat insulating component 50.

[0121] According to some embodiments of this application, please refer to Figure 4 , Figure 6 and Figure 7 The insulating member 41 is located between the two clamping parts 51 , and third clamping grooves 411 are provided on both sides of the insulating member 41 along the first direction X. A protrusion 512 is provided on the opposite side of the two clamping parts 51 , and the protrusion 512 is clamped with the third clamping groove 411 .

[0122] The protrusion 512 refers to a protrusion 512 structure protruding from the surface of the engaging portion 51 on the opposite side. The protrusion 512 can be a strip-shaped protrusion 512 or a convex point. The cross-sectional shape of the protrusion 512 can be various, such as triangular, square, semi-circular, or rectangular, etc. In this embodiment, the cross-sectional shape of the protrusion 512 is rectangular.

[0123] In addition, the shape of the insulating member 41 can be square. Except for the third card slots 411 provided on both sides of the insulating member 41 along the first direction X, the third card slots 411 are also provided on the other two opposite sides of the insulating member 41, that is, the third card slots 411 are provided on the outer peripheral side of the insulating member 41. In this way, when installing the temperature acquisition component 40, there is no need to adjust the insertion direction of the insulating member 41, and the installation of the temperature acquisition component 40 is more convenient and fast.

[0124] In some embodiments, when the protrusion 512 is engaged with the third card slot 411, the upper and lower first side walls of the protrusion 512 are mutually attached to the upper and lower slot side walls of the third card slot 411.

[0125] Along the first direction X, there may be a gap between the protrusion 512 and the third card slot 411, and the distance of the gap can be 1 mm - 2 mm. This can reduce the contact area between the heat insulation member 50 and the insulating member 41, thereby further reducing the influence of the heat radiation after the temperature of the busbar member 30 rises on the sampling accuracy of the temperature acquisition component 40 in the temperature acquisition component 40.

[0126] By providing the third card slots 411 on both sides of the insulating member 41 in the first direction X, and providing the protrusions 512 on the opposite sides of the two engaging portions 51, when installing the temperature acquisition component 40, the two protrusions 512 are engaged and matched with the two third card slots 411. Only need to slide the two third card slots 411 of the insulating member 41 along the extending direction of the protrusions 512 of the heat insulation member 50 to be inserted. The two protrusions 512 on the heat insulation member 50 can provide support and limiting functions for both sides of the insulating member 41 in the first direction X. The installation of the temperature acquisition component 40 is convenient and fast, and the installation stability of the temperature acquisition component 40 is high.

[0127] According to some embodiments of the present application, please refer to Figure 6 and Figure 8 , the temperature acquisition component 40 further includes a conductive member 43, the battery device 100 further includes a circuit board 60, and the temperature acquisition component 42 is electrically connected to the circuit board 60 through the conductive member 43.

[0128] The conductive member 43 refers to a conductive component disposed between the temperature acquisition component 42 and the circuit board 60. The temperature acquisition component 42 is electrically connected to the circuit board 60 through the conductive member 43 to achieve power supply to the temperature acquisition component 42 and signal transmission between the temperature acquisition component 42 and the circuit board 60. The circuit board 60 can be a flexible circuit board 60 or a rigid circuit board 60.

[0129] The temperature acquisition component 42 is electrically connected to the circuit board 60 through the conductive member 43, thereby realizing signal transmission to the temperature acquisition component 42 and power supply to the temperature acquisition component 42.

[0130] According to some embodiments of the present application, the temperature acquisition assembly 40 further includes a heat conduction pad 44, and the temperature acquisition component 42 is thermally connected to the first wall 213 through the heat conduction pad 44.

[0131] The heat conduction pad 44 refers to a heat conduction component disposed between the temperature acquisition component 42 and the first wall 213 of the battery cell 20. The heat conduction pad 44 has good heat conduction performance, and the heat conduction pad 44 can transfer the temperature of the battery cell 20 to the temperature acquisition component 42, which is beneficial for the temperature acquisition component 42 to accurately acquire the temperature information of the battery cell 20.

[0132] After the heat conduction pad 44 is disposed and thermally connected to the first wall 213, the temperature acquisition assembly 40 can acquire the temperature of the first wall 213 of the battery cell 20 through the heat conduction pad 44, reduce heat loss, and improve the accuracy of temperature acquisition by the temperature acquisition component 42.

[0133] According to some embodiments of the present application, the heat insulation member 50 is made of an insulating material.

[0134] The insulating material refers to a material that can prevent the flow of current and is widely used in fields such as power transmission, electronic devices, insulating coatings, insulating pipes, and insulating boards. The main characteristics of the insulating material include high resistivity and electrical breakdown resistance, and usually the resistivity is in the range of 10^10 to 10^22 Ω·m. The insulating material can be rubber, plastic, ceramic, or glass, etc.

[0135] When the heat insulation member 50 is made of an insulating material, it is not easy to have a short - circuit phenomenon between the bus bar 30 and the temperature acquisition assembly 40, reducing the short - circuit risk.

[0136] According to some embodiments of the present application, the material of the heat insulation member 50 is plastic.

[0137] Plastic refers to a material with plasticity and is commonly used in manufacturing insulating pipes, insulating boards, and insulating coatings. Common plastic insulating materials include polyvinyl chloride (PVC), polyethylene (PE), and nylon, etc.

[0138] The material of the heat insulation member 50 is adopted as plastic. Since plastic has poor heat conduction performance, the heat insulation performance of the heat insulation member 50 can be effectively guaranteed.

[0139] The embodiment of the present application further provides an electrical device, which includes the battery device 100 of any one of the foregoing embodiments, and the electrical device is used to provide electrical energy.

[0140] Since the electrical device provided by the embodiment of the present application adopts the battery device 100 provided by any one of the above embodiments, it has the same technical effects, which will not be elaborated here.

[0141] In some embodiments, please refer to Figures 2 to 8 , the battery device 100 includes battery cells 20, a bus bar 30, and a temperature acquisition component 40. The battery cell 20 includes a housing 21 and an electrode terminal 23. The housing 21 includes a first wall 213, and the electrode terminal 23 is disposed on the first wall 213; the bus bar 30 is electrically connected to the electrode terminals 23 of at least two battery cells 20; the temperature acquisition component 40 is thermally connected to the first wall 213, and the temperature acquisition component 40 is used to acquire the temperature of the battery cell 20; wherein, a heat insulation member 50 is disposed between the temperature acquisition component 40 and the bus bar 30, and the temperature acquisition component 40 is mounted on the bus bar 30 through the heat insulation member 50. The heat insulation member 50 is snap-connected to the bus bar 30; the temperature acquisition component 40 is snap-connected to the heat insulation member 50.

[0142] By disposing the heat insulation member 50 between the temperature acquisition component 40 and the bus bar 30, the heat insulation member 50 can prevent the temperature acquisition component 40 from directly contacting the bus bar 30. Due to the heat insulation performance of the heat insulation member 50 itself, it can effectively reduce the influence of the heat radiation generated by the overheating of the bus bar 30 after heating on the sampling accuracy of the temperature acquisition component 40, thereby improving the accuracy of the temperature acquisition component 40 for acquiring the temperature of the battery cell 20, facilitating the real-time control of the battery cell 20, and further being beneficial to improving the reliable performance of the battery device 100. The connection method between the heat insulation member 50 and the bus bar 30 is adopted as a snap connection. The heat insulation member 50 and the bus bar 30 are convenient to install and connect. While ensuring the reliable connection between the heat insulation member 50 and the bus bar 30, the assembly difficulty of the heat insulation member 50 is reduced, and when the heat insulation member 50 is maintained and replaced later, it is beneficial to the quick installation and disassembly of the heat insulation member 50. The connection method between the temperature acquisition component 40 and the heat insulation member 50 is adopted as a snap connection, and the temperature acquisition component 40 is convenient to install. While ensuring the reliable connection between the temperature acquisition component 40 and the heat insulation member 50, the installation difficulty of the temperature acquisition component 40 is reduced, and when the temperature acquisition component 40 needs to be maintained and replaced later, the temperature acquisition component 40 can be quickly disassembled, and the temperature acquisition component 40 is convenient to install and disassemble.

[0143] In some embodiments, the busbar 30 has a notch 31, the heat insulation member 50 is disposed in the notch 31, a card slot is provided on the outer peripheral side of the heat insulation member 50, and the card slot is clamped with the peripheral edge of the notch 31. The peripheral edge of the notch 31 includes two first edges 311 spaced along the first direction X and a second edge 312 connecting the two first edges 311; the heat insulation member 50 includes a connecting portion 52 and two clamping portions 51, the two clamping portions 51 are spaced along the first direction X, and the connecting portion 52 connects the two clamping portions 51; a first card slot 511 is provided on one side of each clamping portion 51 facing away from the other clamping portion 51, and the first card slot 511 is clamped with the first edge 311. The connecting portion 52 is provided with a second card slot 521, the second card slot 521 is clamped with the second edge 312, and the first card slot 511 is communicated with the second card slot 521.

[0144] A card slot is provided on the outer peripheral side of the heat insulation member 50. The heat insulation member 50 is snapped into the notch 31 from the opening of the notch 31. The peripheral edge of the notch 31 provides a supporting effect on the heat insulation member 50. The heat insulation member 50 can be installed on the busbar 30 more quickly and stably. Moreover, the card slot on the outer peripheral side of the heat insulation member 50 is clamped with the peripheral edge of the notch 31, and the heat insulation member 50 is convenient and fast to install. The two first card slots 511 on the two clamping portions 51 are respectively clamped with the two first edges 311. When installing the heat insulation member 50, only the two clamping portions 51 of the heat insulation member 50 need to be slid and snapped along the extending direction of the two first edges 311 of the notch 31, and the heat insulation member 50 is convenient and fast to install. Furthermore, the two clamping portions 51 cooperate with the two first edges 311 to realize the clamping and fixing of the heat insulation member 50 at two points on the notch 31, and the two first edges 311 can provide a relatively stable supporting and positioning effect on the heat insulation member 50. The heat insulation member 50 is clamped with the first edge 311 of the notch 31 through the first card slot 511, and the second card slot 521 on the heat insulation member 50 is clamped with the second edge 312. In this way, each side on the peripheral side of the heat insulation member 50 is clamped and matched with each edge of the notch 31, the clamping area between the heat insulation member 50 and the notch 31 is larger, the stability of the heat insulation member 50 installed in the notch 31 on the busbar 30 is higher, and correspondingly, the installation stability of the temperature acquisition assembly 40 is improved.

[0145] In some embodiments, the temperature acquisition component 40 includes an insulating member 41 and a temperature acquisition component 42. The temperature acquisition component 42 is disposed within the insulating member 41. The insulating member 41 is snap-connected to the heat insulation member 50. The insulating member 41 is located between two snap-connection portions 51. Third card slots 411 are provided on both sides of the insulating member 41 along the first direction X. Protrusions 512 are provided on one side of the two snap-connection portions 51 facing each other. The protrusions 512 are snap-connected to the third card slots 411. The temperature acquisition component 40 includes an insulating member 41, a temperature acquisition component 42, and a conductive member 43. The temperature acquisition component 42 is disposed within the insulating member 41. The battery device 100 further includes a circuit board 60. The temperature acquisition component 42 is electrically connected to the circuit board 60 through the conductive member 43. The temperature acquisition component 40 further includes a heat conduction pad 44. The temperature acquisition component 42 is thermally connected to the first wall 213 through the heat conduction pad 44. The temperature acquisition component 40 further includes a heat conduction pad 44. The temperature acquisition component 42 is thermally connected to the first wall 213 through the heat conduction pad 44. The heat insulation member 50 is made of an insulating material, and the material of the heat insulation member 50 is plastic.

[0146] Protrusions 512 are provided on one side of the two snap-connection portions 51 facing each other. When installing the temperature acquisition component 40, the two protrusions 512 are snap-connected and cooperated with the two third card slots 411. Only by sliding the two third card slots 411 of the insulating member 41 along the extending direction of the protrusions 512 of the heat insulation member 50 and snapping them in, the two protrusions 512 on the heat insulation member 50 can provide a supporting and limiting function for both sides of the insulating member 41 in the first direction X. The installation of the temperature acquisition component 40 is convenient and fast, and the installation stability of the temperature acquisition component 40 is high. The insulating member 41 can perform a function of encapsulating and protecting the temperature acquisition component 42, so that the temperature acquisition component 42 is not exposed to the outside. The temperature acquisition component 42 is electrically connected to the circuit board 60 through the conductive member 43, thereby realizing signal transmission of the temperature acquisition component 42 and power supply to the temperature acquisition component 42. After the heat conduction pad 44 is thermally connected to the first wall 213, the temperature acquisition component 40 can collect the temperature of the first wall 213 of the battery cell 20 through the heat conduction pad 44, reduce heat loss, and improve the accuracy of the temperature collected by the temperature acquisition component 42.

[0147] Although the present application has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that: include: A battery cell, comprising a housing and an electrode terminal, wherein the housing comprises a first wall, and the electrode terminal is disposed on the first wall; A busbar electrically connecting the electrode terminals of at least two of the battery cells; A temperature collection component is thermally connected to the first wall and is used to collect the temperature of the battery cell; the temperature collection component includes an insulating member and a temperature collection component, and the temperature collection component is arranged in the insulating member; Wherein, a heat insulating member is provided between the insulating member and the current collector, and the insulating member is installed on the current collector through the heat insulating member.

2. The battery device according to claim 1, characterized in that: The heat insulating member is clamped with the current collector; and / or the insulating member is clamped with the heat insulating member.

3. The battery device according to claim 2, characterized in that: The collector has a notch, the heat insulating member is arranged in the notch, and a clamping groove is arranged on the outer peripheral side of the heat insulating member, and the clamping groove is clamped with the peripheral edge of the notch.

4. The battery device according to claim 3, characterized in that: The periphery of the notch includes two first edges spaced apart along a first direction and a second edge connecting the two first edges; The thermal insulation component includes a connecting portion and two clamping portions, the two clamping portions are arranged at intervals along the first direction, and the connecting portion connects the two clamping portions; a first clamping groove is arranged on a side of each clamping portion away from the other clamping portion, and the first clamping groove is clamped with the first edge.

5. The battery device according to claim 4, characterized in that: The connecting portion is provided with a second clamping slot, and the second clamping slot is clamped with the second edge.

6. The battery device according to claim 5, characterized in that: The first card slot is communicated with the second card slot.

7. The battery device according to claim 4, characterized in that: The insulating member is clamped with the heat insulating member.

8. The battery device according to claim 7, characterized in that: The insulating member is located between the two clamping parts. The insulating member is provided with third clamping grooves on both sides along the first direction. A protrusion is provided on one side of the two clamping parts facing each other. The protrusion is clamped with the third clamping groove.

9. The battery device according to claim 1, characterized in that: The temperature collection component also includes a conductive member; The battery device further comprises a circuit board, and the temperature collecting component is electrically connected to the circuit board through the conductive member.

10. The battery device according to claim 9, characterized in that: The temperature acquisition component also includes: A thermally conductive pad, through which the temperature collection component is thermally connected to the first wall.

11. The battery device according to claim 1, characterized in that: The thermal insulation member is made of insulating material.

12. The battery device according to claim 11, characterized in that: The thermal insulation element is made of plastic.

13. An electrical device, characterized in that: Comprising the battery device according to any one of claims 1 to 12, the electrical device is used to provide electrical energy.

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