Battery device, electric equipment and energy storage device

Abstract

The utility model provides a battery device, electric equipment and an energy storage device. The battery device comprises a box body which is internally provided with an accommodating cavity; the battery monomer assembly comprises a plurality of battery monomers arranged in the accommodating cavity; the integrated busbar comprises a bearing part, a confluence part, a fixing part and a temperature sampling assembly; the confluence component is arranged on the bearing part, and the confluence component is electrically connected with the plurality of battery monomers; the fixing piece and the confluence component are fixed together through the bearing piece; the temperature sampling assembly is fixed through the fixing piece so as to be matched with the single battery, and the temperature sampling assembly is configured to collect temperature information of the single battery. According to the embodiment of the invention, the risk that the temperature sampling assembly deviates relative to other parts in the integrated busbar is reduced, so that the stability of the integrated busbar structure and the working reliability of the temperature sampling assembly are improved.

Description

TECHNICAL FIELD

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

[0002] In a power battery, a temperature sampling component is arranged in the battery device to detect the working temperature of a battery monomer. In the related art, the installation of the temperature sampling component is relatively complex, and the sensitivity of temperature detection is not high, so that the reliability of the temperature sampling component is poor. CONTENT OF THE UTILITY MODEL

[0003] Embodiments of the present application provide a battery device, a power consumption device and an energy storage device to solve the technical problem of how to improve the detection reliability of the temperature detection component in the battery device.

[0004] Embodiments of the present application provide a battery device, comprising:

[0005] A box body, which is internally provided with a containing cavity;

[0006] A battery monomer component, which comprises a plurality of battery monomers arranged in the containing cavity;

[0007] An integrated busbar, which comprises a bearing piece, a busbar component, a fixing piece and a temperature sampling component; the busbar component is arranged on the bearing piece, and the busbar component is electrically connected to the plurality of battery monomers; the fixing piece is fixed by the bearing piece and the busbar component; the temperature sampling component is fixed by the fixing piece to cooperate with the battery monomers, and the temperature sampling component is configured to collect temperature information of the battery monomers.

[0008] Embodiments of the present application fix the temperature sampling component by the fixing piece, and fix the relative position of the bearing piece and the busbar component to the fixing piece, thereby reducing the installation difficulty of the temperature sampling component, further improving the sensitivity of temperature detection, and improving the reliability of the temperature sampling component.

[0009] In some embodiments, the fixing piece abuts between the busbar component and the bearing piece at least in a first direction, and the first direction is the thickness direction of the integrated busbar.

[0010] Embodiments of the present application abut the temperature sampling component in the first direction to limit the temperature sampling component in the first direction, thereby reducing the risk of deviation of the temperature sampling component relative to other components in the integrated busbar, improving the stability of the integrated busbar structure, and improving the reliability of the operation of the temperature sampling component.

[0011] In some embodiments, the fixing member abuts against the temperature sampling assembly on one side in a first direction, where the first direction is a thickness direction of the integrated busbar.

[0012] In the embodiment of the present application, a fixing member is arranged to abut against the temperature sampling assembly in the first direction, thereby improving the stability of the temperature sampling assembly in the first direction.

[0013] In some embodiments, the fixing member at least partially abuts against the current collecting component on the other side of the first direction.

[0014] In the embodiment of the present application, the fixing member is at least partially in contact with the confluence component on the other side of the first direction, which helps the confluence component to limit and fix the position of the fixing member, thereby improving the stability of the installation of the fixing member.

[0015] In some embodiments, the carrier is configured as an insulating member, the integrated busbar includes a signal sampling component, and the insulating member is at least arranged on a side of the signal sampling component close to the battery cell in the first direction; the fixing member is at least partially stacked in the first direction between the insulating member and the busbar component.

[0016] The embodiment of the present application facilitates achieving the function of limiting and fixing the fixing member on both sides of the first direction by stacking at least a portion of the fixing member between the insulating member and the confluence member in the first direction, thereby improving the stability of the fixing member installation, further improving the stability of the position of the temperature sampling assembly, and improving the reliability of the temperature sampling assembly.

[0017] In some embodiments, the insulating member includes one or more of an insulating film, an injection-molded bracket, and a blister-molded isolation plate.

[0018] In some embodiments, when the insulating member is configured as an insulating film, the insulating film includes two layers, and the collecting assembly, the current collecting component, and the fixing member are at least partially laminated between the two layers of the insulating film in the first direction.

[0019] In the embodiment of the present application, the integrated busbar can be manufactured using a variety of molding processes to meet the needs of different usage scenarios.

[0020] In some embodiments, the signal sampling component further includes a sampling circuit board, the temperature sampling component includes a temperature acquisition component, the temperature acquisition component is electrically connected to the sampling circuit board, and the fixing component abuts against the temperature acquisition component on one side of the first direction.

[0021] The integrated busbar in the embodiment of the present application adopts a hot pressing process, using PET insulating film instead of the traditional isolation plate, and pressing the components such as the busbar and the signal sampling component into a thin sheet through heating and bonding. This can effectively reduce the volume and weight of the integrated busbar and reduce the number of accessories, making the integrated busbar structure lighter, more regular, highly integrated, and with reliable sealing and insulation. It can realize automated assembly, which helps to improve the space utilization and production efficiency of the battery module.

[0022] In some embodiments, the temperature sampling component further includes:

[0023] A heat insulating member is abutted between the temperature collecting member and the fixing member in the first direction.

[0024] The embodiment of the present application provides a heat insulating member between the fixing member and the temperature collecting member, thereby reducing the influence of heat generated on the side of the temperature collecting member away from the battery cell in the first direction on the temperature collecting member, so that the temperature collected by the temperature collecting member is displayed as close to the battery cell as possible, thereby improving the accuracy of the temperature collected by the temperature collecting member.

[0025] In some embodiments, the fixing member includes:

[0026] The main body is provided with a groove, the opening of the groove faces the battery cell in the first direction, and the temperature sampling component is arranged in the groove.

[0027] In the embodiment of the present application, a groove is provided on the main body of the fixing member so that the opening of the groove faces the battery cell, thereby limiting the temperature sampling assembly in the groove, thereby limiting and fixing the temperature sampling assembly in the circumferential direction and reducing the risk of circumferential displacement of the temperature sampling assembly.

[0028] In some embodiments, the main body is provided with a penetrating calibration hole, and the calibration hole is arranged close to the groove.

[0029] The embodiment of the present application provides a through verification hole in the main body, and the verification hole is provided adjacent to the groove, which is conducive to verifying whether the position of the thermal insulation component installed in the groove is offset, thereby improving the accuracy of the installation position of the thermal insulation component, and further improving the accuracy of the temperature collected by the temperature collection component.

[0030] In some embodiments, the calibration holes are provided in plurality, and the plurality of calibration holes are arranged around the groove; and / or the calibration holes are arranged at positions opposite to the groove.

[0031] The application embodiment sets the check holes as multiple, a part of the check holes are arranged around the groove, and another part of the check holes are arranged opposite to the groove, which can check the correct installation state of the thermal insulation piece and the incorrect installation state of the thermal insulation piece, and improve the accuracy of the installation position checking of the thermal insulation piece.

[0032] In some embodiments, the fixing member further comprises:

[0033] The end portion is connected to the body portion, and the end portion abuts against the busbar component on one side of the first direction.

[0034] The application embodiment abuts the busbar component against the end portion of one end of the fixing member, which is conducive to avoiding abutting against the body portion, can realize the limiting effect of the busbar component on the fixing member, and can reduce the pressure relief interference of the busbar component on the pressure relief valve in the battery monomer.

[0035] In some embodiments, the fixing member comprises two end portions, and the two end portions are respectively connected to two ends of the body portion in a second direction, and the second direction is the direction of the pole column spacing in the battery monomer.

[0036] The application embodiment connects the positive and negative poles of the same battery monomer by the two busbar components abutting against the two end portions, which is conducive to reducing the influence of the cycle expansion of the battery monomer on the fixing member, thereby improving the stability of the position of the fixing member, and further improving the accuracy of temperature detection.

[0037] In some embodiments, the end portion and the body portion are integrally formed, and the end portion and the body portion are spaced apart in the first direction.

[0038] The application embodiment arranges the end portion and the body portion to be misaligned in the first direction, and in the case that the end portion is arranged in a stacked manner between the busbar component and the insulating member, the body portion can also be arranged at a position spaced apart from the pressure relief member to leave a proper pressure relief gap, which can improve the assembly compactness and also improve the pressure relief efficiency.

[0039] In some embodiments, the end portion is provided with a relief hole, and the relief hole is the area where the battery monomer and the busbar component are welded.

[0040] The application embodiment sets the end portion with a relief hole, so that the end portion avoids the area where the pole column in the battery monomer and the busbar component are welded, which can ensure the stability of the installation of the fixing member and reduce the interference of the installation of the fixing member on the flow guiding of the busbar component.

[0041] In some embodiments, the body portion is provided with a pressure relief hole penetrating therethrough, and the pressure relief hole is arranged opposite to the pressure relief member of the battery monomer.

[0042] The pressure relief hole is arranged on the body part and is arranged opposite to the pressure relief member of the battery monomer, so that the position of the temperature sampling assembly is limited by the fixing member, and the interference of the fixing member on the pressure relief of the pressure relief member is reduced.

[0043] In some embodiments, the end part is provided with a through anti-stupid hole.

[0044] In the embodiments of the present application, the anti-stupid hole is arranged on the end part, which is beneficial to directional assembly of the fixing member and improves the assembly accuracy and efficiency.

[0045] In some embodiments, the current collecting component includes a buffer part and two connecting parts, the buffer part connects the two connecting parts, and the connecting parts are connected with the pole columns of the battery monomer respectively; and the end part is abutted against the region of the connecting part away from the buffer part.

[0046] In the embodiments of the present application, the two end parts are abutted against the connecting parts of the two current collecting components respectively, and the end part is abutted against the end of the connecting part away from the buffer part, which is beneficial to reducing the influence of the deformation of the buffer part on the end part, thereby improving the stability of the end part limiting and further improving the accuracy of sampling of the temperature sampling assembly.

[0047] In some embodiments, the fixing member further includes a limiting rib, the limiting rib is arranged protruding towards the battery monomer along a first direction relative to the body part, and the limiting rib is arranged around the periphery of the groove.

[0048] In the embodiments of the present application, the protruding limiting rib is arranged around the periphery of the groove, the limiting rib is used to strengthen the relative action in the circumferential direction of the temperature sampling assembly, thereby further improving the stability of the temperature sampling assembly installation and further improving the accuracy of sampling of the temperature sampling assembly.

[0049] In some embodiments, the fixing member further includes a protruding part, the protruding part is arranged protruding towards the groove relative to the limiting rib.

[0050] In the embodiments of the present application, the protruding part is arranged on the fixing member, and when the temperature sampling assembly is limited in the groove, the protruding part can further limit the temperature sampling assembly, thereby further improving the stability of the temperature sampling assembly installation.

[0051] In some embodiments, the fixing member includes two limiting ribs, the two limiting ribs are arranged in a second direction, and the second direction is the direction in which the pole columns in the battery monomer are spaced apart.

[0052] In the embodiment of the present application, by arranging limiting ribs at intervals in the second direction on the fixing member, it is possible to achieve a limiting effect on the temperature sampling component and reserve a certain gap for the installation of the temperature sampling component, thereby reducing the difficulty of installation and improving installation efficiency.

[0053] The present invention provides an electrical device, including:

[0054] A battery device according to any one of the above items.

[0055] The battery device in the embodiment of the present application is fixed by arranging a fixing part in the integrated busbar, and the fixing part is fixed together with the busbar component through the supporting part, and the temperature sampling component is fixed by the fixing part. This can not only achieve the fixation of the temperature sampling component, but also achieve the fixation of the relative positions of the supporting part and the busbar component to the fixing part, thereby reducing the difficulty of installing the temperature sampling component, further improving the sensitivity of temperature detection, and thus improving the reliability of the temperature sampling component.

[0056] The present application also provides an energy storage device, including:

[0057] A battery device according to any one of the above items.

[0058] The battery device in the embodiment of the present application is fixed by arranging a fixing part in the integrated busbar, and the fixing part is fixed together with the busbar component through the supporting part, and the temperature sampling component is fixed by the fixing part. This can not only achieve the fixation of the temperature sampling component, but also achieve the fixation of the relative positions of the supporting part and the busbar component to the fixing part, thereby reducing the difficulty of installing the temperature sampling component, further improving the sensitivity of temperature detection, and thus improving the reliability of the temperature sampling component. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0060] Figure 1 It is a structural diagram of the electrical equipment disclosed in the embodiment of this application;

[0061] Figure 2 is a schematic structural diagram of a battery device disclosed in an embodiment of the present application;

[0062] Figure 3 It is a schematic structural diagram of the integrated busbar disclosed in the embodiment of the present application;

[0063] Figure 4a yes Figure 3Middle AA section view;

[0064] Figure 4b yes Figure 4a Enlarged view of middle part B;

[0065] Figure 5 This is an exploded view of the integrated busbar disclosed in the embodiment of the present application;

[0066] Figure 6 It is a structural schematic diagram of the fixing member disclosed in the embodiment of the present application;

[0067] Figure 7 A top view of a fixing member disclosed in an embodiment of the present application;

[0068] Figure 8 A bottom view of the fixing member disclosed in an embodiment of the present application;

[0069] Figure 9 A side view of a fixing member disclosed in an embodiment of the present application;

[0070] Figure 10 for Figure 9 Enlarged view of part C in the middle.

[0071] In the drawings, the drawings are not drawn to scale.

[0072] Marking Description:

[0073] 1000, vehicle; 100, battery device; 200, controller; 300, motor; 10, battery cell; 211, carrier; 214, upper cover; 2, box; 3, integrated busbar; 31, signal sampling assembly; 311, temperature sampling assembly; 3111, temperature collection component; 3112, thermal insulation component; 312, sampling circuit board; 32, current collection component; 321, buffer; 322, connecting part; 33, fixing part; 331, main body; 3311, groove; 3312, calibration hole; 3313, pressure relief hole; 332, end; 3321, avoidance hole; 3322, foolproof hole; 333, limiting rib; 334, protrusion; 34, insulating part. DETAILED DESCRIPTION

[0074] It should be noted that, unless there is a conflict, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of this application and should not be regarded as an improper restriction on 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 belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the use of the terms "include," "includes" and "including" in this application are meant to be non-limiting.

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

[0077] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. The skilled person in the art explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.

[0078] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are "or" relationship.

[0079] In the description of the embodiments of the present application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", "height direction", "first direction", "second direction" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and is not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed, operated or used in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0080] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0081] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and can be direct contact, contact through an intermediate medium layer, contact with essentially no interaction force between the two contacting parties, or contact with interaction force between the two contacting parties.

[0082] With the development of clean energy, more and more devices are using electricity as a driving force. Consequently, power batteries, such as lithium-ion batteries, that can store large amounts of electricity and undergo multiple charge and discharge cycles are rapidly developing. These batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric vehicles, as well as in aerospace and other fields.

[0083] The battery apparatus referred to in the embodiments of this application refers to a single physical module that includes one or more battery cells, or one or more battery cell assemblies, and is used to provide higher voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or hybrid via a busbar.

[0084] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells. For example, a battery cell assembly may be a battery module. When there are multiple battery cells, the battery module is formed by arranging and securing the multiple battery cells to form an independent module. For example, a battery module may be formed by bundling multiple battery cells using cable ties.

[0085] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are housed in the case.

[0086] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0087] As an example, the battery cell assembly may also be housed in the box by directly fixing the plurality of battery cells to the box.

[0088] As an example, the housing may include a first housing and a second housing. The first housing and the second housing engage to form an enclosed space within the housing to accommodate battery cells or battery module cell assemblies. Enclosed herein means covered or closed, and may be sealed or unsealed. The first housing may be a top cover or a bottom plate.

[0089] As an example, the box may include a top cover, a frame, and a bottom plate, wherein the top cover and the bottom plate are respectively connected to the frame to form a closed space inside the box to accommodate the battery cells or battery module cell assemblies.

[0090] As an example, the box body can be used as a part of the chassis structure of the vehicle. For example, the top cover of the box body can become at least a part of the floor of the vehicle, or the frame of the box body can become at least a part of the crossbeam and longitudinal beam of the vehicle.

[0091] In some embodiments, the battery device refers to an energy storage device, which includes a box with a door on at least one side. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0092] A battery cell may include an electrode assembly and an electrolyte. The electrode assembly consists of a positive electrode sheet, a negative electrode sheet, and a separator. A battery cell primarily operates by the movement of metal ions between the positive and negative electrode sheets. The positive electrode sheet comprises a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive electrode collector. The positive electrode collector not coated with the positive active material layer protrudes from the positive electrode collector coated with the positive active material layer, and the positive electrode collector not coated with the positive active material layer serves as the positive electrode tab. For lithium-ion batteries, for example, the positive electrode current collector may be made of aluminum, and the positive electrode active material may be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide. The negative electrode sheet comprises a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative electrode collector. The negative electrode collector not coated with the negative active material layer protrudes from the negative electrode collector coated with the negative active material layer, and the negative electrode collector not coated with the negative active material layer serves as the negative electrode tab. The negative electrode current collector can be made of copper, and the negative electrode active material can be carbon or silicon. To ensure high current flow without melting, multiple positive electrode tabs are stacked together, and multiple negative electrode tabs are stacked together. The separator can be made of materials such as PP (polypropylene) or PE (polyethylene).

[0093] Illustratively, the positive electrode current collector has two surfaces facing each other in its thickness direction, and the positive electrode active material is disposed on either or both of the two facing surfaces of the positive electrode current collector.

[0094] For example, the positive electrode current collector may 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, nickel, carbon electrode, carbon, nickel or titanium, etc. may be used. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector may be formed by forming a metal material (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.).

[0095] Illustratively, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0096] For example, the negative electrode current collector may be a metal foil or a composite current collector. For example, the metal foil may be silver-plated aluminum, silver-plated stainless steel, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel, or titanium.

[0097] Illustratively, the negative electrode current collector has two surfaces facing each other in its thickness direction, and the negative electrode active material is disposed on either or both of the two facing surfaces of the negative electrode current collector.

[0098] Illustratively, the negative electrode active material may be a negative electrode active material for a battery that is well known in the art. As an example, the negative electrode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, and lithium titanate. The silicon-based material may be selected from at least one of elemental silicon, silicon oxides, silicon-carbon composites, silicon-nitrogen composites, and silicon alloys. The tin-based material may be selected from at least one of elemental tin, tin oxides, and tin alloys. However, the present application is not limited to these materials, and other traditional materials that can be used as negative electrode active materials for batteries may also be used. These negative electrode active materials may be used alone or in combination of two or more.

[0099] The battery cell also includes an insulating film and a shell. The insulating film is coated on the outside of the electrode assembly, and the shell encapsulates the electrode assembly coated with the insulating film to form a battery cell. The insulating film can be Mylar film, and the shell can be aluminum or steel. After the electrode assembly is wound and formed, the Mylar film and shell are encapsulated through the Mylar wrapping process and the shell insertion process. The Mylar film seals and protects the electrode assembly, and the Mylar film can effectively insulate the electrode assembly and the shell from each other, preventing internal short circuits in the battery cell. The shell also plays a protective role.

[0100] Exemplarily, the shell comprises a top cover and a shell, the shell is provided with an opening, and the top cover closes the opening to form a sealed space for accommodating the electrode assembly and electrolyte and the like. The shell can be provided with one or more openings. The top cover can also be provided with one or more openings.

[0101] Exemplarily, at least one electrode terminal is arranged on the shell, and the electrode terminal is electrically connected with the tab of the electrode assembly. The electrode terminal can be directly connected with the tab or indirectly connected with the tab through an adapter. The electrode terminal can be arranged on the top cover or arranged on the shell.

[0102] Exemplarily, a pressure relief member is arranged on the shell. The pressure relief member is used for relieving the internal pressure of the battery monomer. It should be noted that the pressure relief member can be an explosion-proof valve or a pressure relief hole.

[0103] The development of battery technology needs to consider many design factors, such as energy density, discharge capacity, charge-discharge rate, and other performance parameters.

[0104] In order to improve the reliability of the battery device, a temperature sampling assembly is generally arranged in the battery device, which can collect and monitor the temperature of the battery monomer in the use process, so as to obtain the use condition of the battery. The related temperature sampling assembly is fixed on the circuit board by the buckle and the glue, but due to the aging and thinning of the glue during assembly, there is a gap between the buckle and the temperature sensor, so that the buckle cannot press the circuit board tightly on the battery monomer, and the intermediate heat conduction medium of the circuit board cannot accurately transfer the temperature to the temperature sampling assembly, thereby affecting the temperature sensing time. Secondly, once the glue is delaminated, the thermal resistance between the top surface of the battery monomer and the circuit board is greatly increased, which affects the response time of temperature sensing. The fixing effect of the related fixing structure is not high, so that the temperature sampling assembly is easy to displace, thereby affecting the accuracy and reliability of temperature detection.

[0105] The embodiment of the present application provides a battery device, which comprises a box body, a battery monomer and an integrated busbar, the box body is provided with a containing cavity, the battery monomer is arranged in the containing cavity, and the battery monomer assembly comprises a plurality of battery monomers arranged in the containing cavity; the integrated busbar comprises a bearing member, a bus member, a fixing member and a temperature sampling assembly, the bus member is arranged on the bearing member, the bus member is electrically connected with the plurality of battery monomers, the fixing member is fixed by the bearing member and the bus member, and the temperature sampling assembly is fixed by the fixing member and cooperates with the battery monomer. The temperature sampling assembly is configured to collect temperature information of the battery monomer.

[0106] The embodiment of the present application can realize the fixation of the temperature sampling assembly, and realize the fixation of the relative position of the bearing member and the bus component to the fixing member, thereby reducing the installation difficulty of the temperature sampling assembly, further improving the sensitivity of temperature detection, and improving the reliability of the temperature sampling assembly.

[0107] The technical solution described in the embodiment of the present application is suitable for a battery using electric device. The electric device includes the battery of any embodiment of the present application, and the battery is used to provide electric energy.

[0108] The electric device can be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, and an electric tool, etc. The vehicle can be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile, or a range extended automobile, etc. The spacecraft includes an airplane, a rocket, a space shuttle, and a spacecraft, etc. The electric toy includes a fixed or mobile electric toy, for example, a game machine, an electric automobile toy, an electric ship toy, and an electric airplane toy, etc. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembling electric tool, and a railway electric tool, for example, an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact electric drill, a concrete vibrator, and an electric planer, etc. The embodiments of the present application do not specially limit the above electric devices.

[0109] It should be noted that the technical solution described in the embodiments of the present application is not only limited to the above described battery device and electric device, but also can be applied to all battery devices including a box body and electric devices using the battery device, but for the sake of simplicity of description, the following embodiments are described by taking an electric vehicle as an example.

[0110] Please refer to Figure 1 The inside of the vehicle 1000 can be provided with a controller 200, a motor 300, and a battery device 100, and the controller 200 is used to control the battery device 100 to supply power to the motor 300. For example, the battery device 100 can be arranged at the bottom, the front, 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 be used as an operating power source of the vehicle 1000, and is used for the circuit system of the vehicle 1000, for example, for the working power demand of the vehicle 1000 during starting, navigation, and running. In another embodiment of the present application, the battery device 100 can not only be used as an operating power source of the vehicle 1000, but also can be used as a driving power source of the vehicle 1000, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.

[0111] The embodiment of the present application provides a battery device, such as Figure 2 andFigure 3 As shown, the battery device 100 includes a box, a battery cell 10 and an integrated busbar 3 .

[0112] To meet different power requirements, the battery device 100 may include multiple battery cells 10. A battery cell 10 is the smallest unit that makes up a battery module or battery device 100. Multiple battery cells 10 can be connected in series, in parallel, or in a hybrid configuration. A hybrid configuration refers to multiple battery cells that are connected in both series and parallel. Multiple battery cells 10 can be directly connected in series, in parallel, or in a hybrid configuration, and then the entire structure of the multiple battery cells 10 is housed in a housing. Of course, the battery device 100 can also be formed by first connecting multiple battery cells 10 in series, in parallel, or in a hybrid configuration to form a battery module, and then the multiple battery modules are further connected in series, in parallel, or in a hybrid configuration to form a single structure that is housed in a housing.

[0113] like Figure 3 As shown, the battery device 100 may also include other structures. For example, the battery device 100 may also include a busbar component for electrically connecting the multiple battery cells 10. Each battery cell 10 may be a secondary battery or a primary battery; it may also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 10 may be cylindrical, flat, rectangular, or have other shapes.

[0114] The enclosure can be a simple three-dimensional structure such as a single cuboid, cylinder, or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as cuboids, cylinders, or spheres. The enclosure can be made of alloy materials such as aluminum alloy and iron alloy, polymer materials such as polycarbonate and polyisocyanurate foam, or composite materials such as glass fiber and epoxy resin.

[0115] The box body is provided with a receiving cavity inside, which is used to receive the battery cell assembly or battery module. The box body can be of various structures. Figure 2 The housing may include an upper cover 214 and a carrier 211. The upper cover 214 and the carrier 211 cover each other and together define an installation space for accommodating the battery cells 10. The carrier 211 may be a hollow structure with one end open, and the upper cover 214 is a plate-like structure. The upper cover 214 covers the open side of the carrier 211 to form a housing with an installation space. The upper cover 214 and the carrier 211 may also both be hollow structures with one end open, with the open side of the upper cover 214 covering the open side of the carrier 211 to form a housing with an installation space. Of course, the upper cover 214 and the carrier 211 may have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0116] In order to improve the sealing performance after the upper cover 214 and the carrier 211 are connected, a sealing member, such as a sealant, a sealing ring, etc., may also be provided between the upper cover 214 and the carrier 211 .

[0117] Assuming that the upper cover 214 covers the top of the carrier 211 , the upper cover 214 can also be called an upper box cover, and the carrier 211 can also be called a lower box cover.

[0118] like Figure 3 As shown, the integrated busbar 3 is an electrical connection structure in the battery device. The integrated busbar 3 is used to realize high-voltage series and parallel connection of battery cells, temperature sampling of battery cells, voltage sampling of battery cells, overcurrent fusing and other functions.

[0119] like Figure 4a and Figure 4b and Figure 5 As shown, the integrated busbar 3 in the embodiment of the present application includes a temperature sampling assembly 311, which is used to sample the temperature of the battery cell. The fixing member 33 is used to limit the position of the temperature sampling assembly 311 to improve the stability of the position of the temperature sampling assembly 311.

[0120] The busbar assembly 32 electrically connects multiple battery cells and is used to achieve high-voltage series and parallel connection of the multiple battery cells. In some embodiments, the integrated busbar 3 includes a signal sampling assembly 31, which includes the aforementioned temperature sampling assembly 311. The signal sampling assembly 31 is electrically connected to the battery cells and is used to collect operating signal parameters of the battery cells. These operating signal parameters include, but are not limited to, battery cell temperature and battery cell voltage.

[0121] In the embodiment of the present application, the confluence component 32 is disposed on the carrier 211. It should be noted that the confluence component 32 is disposed on the carrier 211, which means that the confluence component 32 and the carrier 211 have a limiting relationship, so that the confluence component 32 and the carrier 211 are integrated into one body, so as to facilitate the integrated feeding of the confluence component 32 and the carrier 211. The embodiment of the present application does not limit the limiting fixing method of the confluence component 32 and the carrier 211, and the fixing method can be riveting, bonding, welding, etc.

[0122] The confluence component 32 electrically connects multiple battery cells 10; the fixing member 33 is fixed together by the carrier 211 and the confluence component 32; the temperature sampling component 311 is fixed by the fixing member 33 to cooperate with the battery cell 10, and the temperature sampling component is configured to collect temperature information of the battery cell.

[0123] It should be noted that the fact that the fixing member 33 is fixed by the carrier 211 and the confluence member 32 indicates that the relative position of the fixing member 33 is limited by the carrier 211 and the confluence member 32. Compared to embodiments in which the temperature sampling assembly is fixed by other fixing methods, the embodiment of the present application uses a fixing member to fix the temperature sampling assembly 311, which helps to reduce the difficulty of limiting the position of the temperature sampling assembly and also helps to improve the efficiency of the temperature sampling assembly installation. In addition, the fact that the fixing member is limited by the carrier and the confluence member helps to improve the stability of the fixing member's limit, thereby improving the reliability of the temperature sampling assembly collection.

[0124] The embodiment of the present application sets a fixing part in the integrated busbar, and fixes the fixing part together with the busbar component through the supporting part, and the temperature sampling assembly is fixed by the fixing part. This can not only fix the temperature sampling assembly, but also fix the relative positions of the supporting part and the busbar component to the fixing part, thereby reducing the difficulty of installing the temperature sampling assembly, further improving the sensitivity of temperature detection, and thus improving the reliability of the temperature sampling assembly.

[0125] In some embodiments, the fixing member 33 abuts between the current collecting component 32 and the supporting member 211 at least in a first direction, where the first direction is a thickness direction of the integrated busbar.

[0126] It should be noted that the thickness direction of the integrated busbar can be understood as the height direction of the battery device, and can also be understood as the height direction of the battery cell.

[0127] The embodiment of the present application limits the temperature sampling assembly in the first direction by abutting the temperature sampling assembly in the first direction, thereby reducing the risk of the temperature sampling assembly shifting relative to other components in the integrated busbar, thereby improving the stability of the integrated busbar structure and the reliability of the temperature sampling assembly.

[0128] like Figure 4a and Figure 4b As shown, the fixing member 33 is in the first direction (refer to Figure 4a One side in the x direction) abuts against the temperature sampling component 311, and the first direction is the direction in which the integrated busbar 3 and the battery cells are arranged in sequence.

[0129] It should be noted that the first direction represents the direction in which the battery cells and the integrated busbar are arranged in sequence, and the direction in which the battery cells and the integrated busbar are arranged in sequence in the embodiments of the present application can be the height direction of the battery device, or the width or length direction of the battery device. Specifically, the integrated busbar can be arranged on the side of the battery cell where the pole is arranged, and the pole can be arranged in the height direction of the battery cell, and the battery cell can be placed upright in the box of the battery device, or can be arranged horizontally in the box of the battery device; when the battery cell is placed upright in the box, the direction in which the integrated busbar and the battery cell are arranged in sequence can be understood as the height direction of the battery device; when the battery cell is arranged horizontally in the box, the direction in which the integrated busbar and the battery cell are arranged in sequence can be understood as the width direction or the length direction of the battery device. In other words, the first direction in the embodiments of the present application can be understood as the relative direction in which the battery cells and the integrated busbar are arranged in sequence, and is not necessarily an absolute specified direction of the battery device.

[0130] like Figure 4a and Figure 4b As shown, the fixing member 33 is in the first direction (refer to Figure 4a The side of the fixing member 33 and the temperature sampling component 311 in the first direction (refer to Figure 4a The temperature sampling assembly 311 has a relative positional relationship of contact and abutment with each other in the x-direction (in the middle x-direction), thereby realizing the limiting fixation of the temperature sampling assembly 311 by the fixing member 33 in the first direction.

[0131] An embodiment of the present application provides a battery device, which includes a housing, a battery cell, and an integrated busbar. The housing is provided with a receiving cavity, and the battery cell is disposed in the receiving cavity. The battery cell includes a plurality of battery cells, and the plurality of battery cells are arranged in the receiving cavity to form a battery cell assembly. The integrated busbar includes a signal sampling assembly, a busbar component, and a fixing component. The busbar component electrically connects the plurality of battery cells. The signal sampling assembly is electrically connected to the battery cells to collect working signal parameters of the battery cells. The signal sampling assembly includes a temperature sampling assembly. The fixing component abuts the temperature sampling assembly on one side in a first direction. The first direction is the direction in which the integrated busbar and the battery cells are sequentially arranged. The embodiment of the present application limits the temperature sampling assembly in the first direction by providing a fixing component in the integrated busbar, and by having the fixing component abut the temperature sampling assembly in the first direction. This reduces the risk of the temperature sampling assembly shifting relative to other components in the integrated busbar, thereby improving the stability of the integrated busbar structure and the reliability of the temperature sampling assembly.

[0132] In some embodiments, as Figure 4a and Figure 4b As shown, the fixing member 33 is in the first direction (refer to Figure 4aThe other side (in the x-direction) at least partially abuts against the converging member 32. It should be noted that the thickness direction of the fixing member 33 is located in the first direction. The fixing member 33 has two opposite sides in the first direction, one of which abuts against the temperature sampling assembly 311, and the other abuts against the converging member 32. The converging member 32 is welded to the terminal of the battery cell, thereby fixing the relative position of the battery cell to the converging member 32, and further fixing the relative position of the converging member 32 to the fixing member 33.

[0133] In the embodiment of the present application, the fixing member is at least partially in contact with the confluence component on the other side of the first direction, which helps the confluence component to limit and fix the position of the fixing member, thereby improving the stability of the installation of the fixing member.

[0134] In some embodiments, as Figure 3 As shown, the integrated busbar 3 also includes an insulating member 34. Figure 4a and Figure 4b As shown, the insulating member 34 is at least disposed on one side of the signal sampling component 31 close to the battery cell in the first direction ( Figure 4b the fixing member 33 is at least partially stacked in the first direction between the insulating member 34 and the busbar component 32.

[0135] It should be noted that the insulating member 34 in the embodiment of the present application can be configured as a plastic structural member. In other words, the insulating member 34 can be made of plastic and can provide a certain structural support function to provide a certain support strength for the integrated busbar 3. The integration methods of the insulating member 34 in the embodiment of the present application include but are not limited to injection molding brackets, splicing, PET (polyethylene terephthalate) hot pressing film, blister insulation board, and other solutions.

[0136] The embodiment of the present application facilitates achieving the function of limiting and fixing the fixing member on both sides of the first direction by stacking at least a portion of the fixing member between the insulating member and the confluence member in the first direction, thereby improving the stability of the fixing member installation, further improving the stability of the position of the temperature sampling assembly, and improving the reliability of the temperature sampling assembly.

[0137] In some embodiments, as Figure 3 As shown, the insulating member 34 includes one or more of an insulating film, an injection molded bracket, and a blister molded isolation plate.

[0138] In the embodiment of the present application, the integrated busbar can be manufactured using a variety of molding processes to meet the needs of different usage scenarios.

[0139] In some embodiments, when the insulating member is configured as an insulating film, the insulating film may be a PET film, and the insulating film may be configured as a single layer or multiple layers. In the embodiment of the present application, the insulating film includes two layers, and the collection assembly, the current collecting component, and the fixing member are at least partially laminated between the two layers of insulating film in the first direction.

[0140] The integrated busbar in the embodiment of the present application adopts a hot pressing process, using PET insulating film instead of the traditional isolation plate, and pressing the components such as the busbar and the signal sampling component into a thin sheet through heating and bonding. This can effectively reduce the volume and weight of the integrated busbar and reduce the number of accessories, making the integrated busbar structure lighter, more regular, highly integrated, and with reliable sealing and insulation. It can realize automated assembly, which helps to improve the space utilization and production efficiency of the battery module.

[0141] In some embodiments, as Figures 3-5 As shown, the signal sampling component 31 further includes a sampling circuit board 312, the temperature sampling component 311 includes a temperature acquisition component 3111, the temperature acquisition component 3111 is electrically connected to the sampling circuit board 312, and the fixing member 33 is in the first direction (refer to Figure 4a One side (in the x direction) of the sampling circuit board 311 abuts against the temperature collecting member 3111. It should be noted that the sampling circuit board 312 in the embodiment of the present application can be set as a flexible circuit board (FPC).

[0142] In the embodiment of the present application, the fixing member abuts against one side of the temperature collecting member in the first direction, which helps to improve the stability of the installation of the temperature collecting member and further improve the reliability of the temperature collecting member.

[0143] In some embodiments, as Figure 4a and Figure 4b As shown, the temperature sampling assembly 311 further includes a heat insulating member 3112, the heat insulating member 3112 is arranged in a first direction (refer to Figure 4a The heat insulating member 3112 is provided as a component having a temperature insulating function. The specific material of the heat insulating member is not limited in this embodiment of the application, as long as it can achieve the heat insulating function.

[0144] The embodiment of the present application provides a heat insulating member between the fixing member and the temperature collecting member, thereby reducing the influence of heat generated on the side of the temperature collecting member away from the battery cell in the first direction on the temperature collecting member, so that the temperature collected by the temperature collecting member is displayed as close to the battery cell as possible, thereby improving the accuracy of the temperature collected by the temperature collecting member.

[0145] In some embodiments, as Figures 6-10 As shown, the fixing member 33 includes a main body portion 331, and the main body portion 331 is provided with a groove 3311.Figure 4a and Figure 4b As shown, the opening of the groove 3311 faces the battery cell in a first direction, and the temperature sampling component 311 is disposed in the groove 3311 .

[0146] It should be noted that the embodiment of the present application does not limit the forming method of the groove 3311. For example, the groove 3311 can be directly stamped from the fixing part 33 as a whole, or the groove 3311 can be a recessed structure punched out on the fixing part 33.

[0147] In the embodiment of the present application, a groove is provided on the main body of the fixing member so that the opening of the groove faces the battery cell, thereby limiting the temperature sampling assembly in the groove, thereby limiting and fixing the temperature sampling assembly in the circumferential direction and reducing the risk of circumferential displacement of the temperature sampling assembly.

[0148] In some embodiments, as Figure 7 As shown, the main body 331 is provided with a through-hole 3312. It should be noted that "through-hole" means that the verification hole 3312 extends through two opposite sides of the main body 331 in the first direction, and the verification hole 3312 is located close to the groove 3311. It should be noted that "close to" means that the distance between the verification hole 3312 and the groove 3311 is less than a set value, so that the verification hole 3312 is closer to the groove 3311 than other positions on the main body 331. The embodiment of the present application does not limit the specific range of the above-mentioned set value, and the specific value of the set value can be determined according to the actual structural dimensions of the main body.

[0149] It should be noted that, in the embodiment of the present application, the verification hole 3312 is set through, and the verification hole 3312 is set adjacent to the groove 3311. When a thermal insulation piece is set in the groove 3311, the verification hole 3312 can be used to observe the specific installation situation of the thermal insulation piece. Specifically, when the position of the thermal insulation piece relative to the groove 3311 is offset, for example, the thermal insulation piece is offset to the position where the verification hole 3312 is set, the verification hole 3312 can directly observe the thermal insulation piece, or, when the thermal insulation piece is not offset, the thermal insulation piece cannot be observed at the verification hole 3312, thereby realizing the verification hole to verify whether the thermal insulation pad is offset.

[0150] The embodiment of the present application provides a through verification hole in the main body, and the verification hole is provided adjacent to the groove, which is conducive to verifying whether the position of the thermal insulation component installed in the groove is offset, thereby improving the accuracy of the installation position of the thermal insulation component, and further improving the accuracy of the temperature collected by the temperature collection component.

[0151] In some embodiments, as Figure 7It is to be noted that the surrounding indicates that the check hole 3312 is arranged on the periphery of the groove 3311, and in the case where the check hole 3312 is arranged in multiple, the check hole 3312 can be arranged at intervals along the periphery of the groove.

[0152] It is to be noted that the surrounding indicates that the check hole 3312 is arranged on the periphery of the groove 3311, and in the case where the check hole 3312 is arranged in multiple, the check hole 3312 can be arranged at intervals along the periphery of the groove.

[0153] It is to be noted that the surrounding indicates that the check hole 3312 is arranged on the periphery of the groove 3311, and in the case where the check hole 3312 is arranged in multiple, the check hole 3312 can be arranged at intervals along the periphery of the groove.

[0154] In the case where the position of the heat insulation piece in the groove is accurate, the check hole in the groove can display the heat insulation piece, and the check hole arranged around the groove cannot display the heat insulation piece. In other cases, if the check hole arranged around the groove can display the heat insulation piece, it indicates that the position of the heat insulation piece is offset relative to the groove.

[0155] The embodiment of the present application can check the correct installation state of the heat insulation piece and the incorrect installation state of the heat insulation piece by arranging multiple check holes, part of which are arranged around the groove and part of which are arranged opposite to the groove, thereby improving the accuracy of checking the installation position of the heat insulation piece.

[0156] In some embodiments, as shown in Figures 6-8 It is to be noted that the end portion 332 in the embodiment of the present application can be integrally formed with the body portion 331.

[0157] As shown in Figure 4a and Figure 4b and Figure 7 As shown in Figure 4a , the end portion 332 is in abutment with the busbar assembly 32 on one side in the first direction (refer to the x direction in

[0158] It is to be noted that the abutment of the end portion 332 with the busbar assembly 32 in the embodiment of the present application indicates that at least part of the end portion 332 is in contact with the busbar assembly 32, which can achieve the limiting of the busbar assembly 32 to the fixing member 33, of course, in some embodiments, the busbar assembly 32 can also be in complete abutment with the end portion 332.

[0159] The embodiment of the present application facilitates avoiding abutment against the main body by abutting the confluence component against the end of one end of the fixing component, thereby achieving the limiting effect of the confluence component on the fixing component and reducing the pressure relief interference of the confluence component on the pressure relief valve in the battery cell.

[0160] In some embodiments, as Figure 7 As shown, the fixing member 33 includes two end portions 332, and the two end portions 332 are respectively connected to the main body 331 in the second direction (refer to Figure 7 The second direction is the direction of the distance between the poles in the battery cell. The second direction can also be understood as the width direction of the battery cell. The fixing member 33 in the embodiment of the present application is provided with two end portions 332.

[0161] like Figure 4a and Figure 4b As shown, the confluence component 32 abuts against the two ends 332 of the fixing member 33 to improve the stability of the fixing member 33. Figure 7 As shown, the end portion 332 is located at the main body portion 331 in the second direction (refer to Figure 7 The two ends 332 are spaced apart in the same direction as the width direction of the battery cell, so that the two ends of the same fixing member are limited by the converging component 32 connected to the same battery cell.

[0162] The embodiment of the present application connects the positive and negative electrodes of the same battery cell respectively by two busbar components 32 abutting the two ends, which is beneficial to reducing the impact of the cyclic expansion of the battery cell on the fixing part, thereby improving the stability of the fixing part position and further improving the accuracy of temperature detection.

[0163] In some embodiments, as Figure 6 As shown, the end portion 332 and the main body portion 331 are integrally formed, and the end portion 332 and the main body portion 331 are aligned in a first direction (refer to Figure 4a The ends 332 and the main body 331 are spaced apart in the x-direction. It should be noted that the term "integrated formation of the end portion 332 and the main body 331" means that the end portion 332 and the main body 331 can be integrally formed using the same component. For example, the end portion and the main body can be formed by directly stamping a single sheet of material, or the end portion and the main body can be integrally formed using injection molding or extrusion. The specific method of forming the end portion and the main body is not limited in this embodiment of the present application.

[0164] It should be noted that the end portion 332 and the main body portion 331 are in the first direction (refer to Figure 4a The spacing in the x-direction indicates that the end portion and the main body are not in the same plane.

[0165] In the embodiment of the present application, the end portion and the main body portion are staggered in the first direction. When the end portion is stacked between the busbar component and the insulating component, the main body portion can also be set at a position spaced apart from the pressure relief component to leave an appropriate pressure relief gap, thereby improving the assembly compactness and the pressure relief efficiency.

[0166] In some embodiments, combined Figures 5-8 As shown, end 332 is provided with a relief hole 3321, which serves as the welding area between the battery cell and the busbar. It should be noted that the busbar in this embodiment of the application can be configured as a copper bar or an aluminum bar. The busbar is welded to adjacent poles to achieve electrical conductivity to the battery cell.

[0167] It should be noted that the embodiment of the present application does not limit the specific shape of the avoidance hole 3321. The avoidance hole 3321 may be a closed hole, and the avoidance hole 3321 passes through the end portion 332 in the first direction (refer to Figure 4a The avoidance hole 3321 may also be an open hole, Figure 6 The embodiment shown is an open hole, which can also be understood as having a partial edge, so that the end portion only forms a portion of the avoidance hole. Regardless of the shape of the avoidance hole 3321, as long as the avoidance hole 3321 can avoid the area where the current collecting component is welded to the pole, and the end portion can maintain stable contact with the current collecting component.

[0168] In the embodiment of the present application, an avoidance hole is provided at the end portion so that the end portion avoids the area where the pole in the battery cell is welded to the busbar component, thereby ensuring the stability of the installation of the fixing part and reducing the interference of the installation of the fixing part on the flow diversion of the busbar component.

[0169] In some embodiments, as Figures 3-8 As shown, the main body 331 is provided with a through-hole pressure relief hole 3313, which is arranged opposite to the pressure relief member of the battery cell. The pressure relief member is a component used to release the internal air pressure of the battery cell. When the internal air pressure of the battery cell is higher than that outside, the pressure difference allows the gas inside the battery cell to be released outside the battery cell through the pressure relief member, thereby achieving a balance between the pressure difference between the inside and outside of the battery cell.

[0170] In the embodiment of the present application, a through pressure relief hole is provided on the main body, and the pressure relief hole is arranged opposite to the pressure relief part of the battery cell. While the position of the temperature sampling component is limited by the fixing part, the interference of the fixing part on the pressure relief of the pressure relief part can be reduced.

[0171] In some embodiments, as Figure 8As shown, the end portion 332 is provided with a through-hole 3322. The hole 3322 can be used to fix with the insulating member, or the hole 3322 can be used to fix with the busbar component, and the above-mentioned fixing methods include but are not limited to riveting, welding, etc.

[0172] The embodiment of the present application provides fool-proof holes at the end, which facilitates the directional assembly of the fixing parts and improves the accuracy and efficiency of the assembly.

[0173] In some embodiments, as Figure 5 As shown, the current collecting component 32 includes a buffer portion 321 and two connecting portions 322, the buffer portion 321 connects the two connecting portions 322, and the connecting portions 322 are respectively connected to the poles of the battery cells; wherein, the combination Figure 3 and Figure 8 As shown, the end portion 332 abuts against an area of ​​the connecting portion 322 away from the buffer portion 321 .

[0174] It should be noted that the buffer portion 321 in the busbar component 32 is connected between the two connecting portions 322. During the cyclic expansion of the battery cell, the battery cell can pull the two connecting portions 322 to change their relative position. The buffer portion 321 can absorb the relative position between the two connecting portions 322, thereby playing a buffering role in the busbar component during the cyclic expansion of the battery cell.

[0175] It should be noted that the connecting portion 322 has two ends opposite to the buffer portion in the horizontal direction, one end of the connecting portion is connected to the buffer portion, and the other end of the connecting portion is relatively far away from the buffer portion. The end in the embodiment of the present application abuts against the end of the connecting portion away from the buffer portion.

[0176] The embodiment of the present application is advantageous in reducing the influence of deformation of the buffer portion on the end portion by respectively abutting the two end portions against the connection portions of the two confluence components, and abutting the end portions against the end of the connection portions away from the buffer portion, thereby improving the stability of the end position limit and further improving the sampling accuracy of the temperature sampling assembly.

[0177] In some embodiments, as Figures 8-10 As shown, the fixing member 33 further includes a limiting rib 333, which is relative to the main body 331 along a first direction (refer to Figure 4a The limiting rib 333 is provided around the periphery of the groove 3311 .

[0178] The embodiment of the present application provides raised limiting ribs on the periphery of the groove, and utilizes the limiting ribs to strengthen the relative effect on the circumference of the temperature sampling assembly, thereby further improving the stability of the installation of the temperature sampling assembly and further improving the sampling accuracy of the temperature sampling assembly.

[0179] In some embodiments, as Figure 9 andFigure 10 As shown, the fixing member 33 further includes a protrusion 334, which is provided to protrude relative to the limiting rib 333 toward the direction of the groove 3311. In other words, the limiting rib 333 has an inner wall surface close to one side of the groove 3311, and the protrusion 334 is provided to protrude relative to the inner wall surface.

[0180] In the embodiment of the present application, a protrusion is provided on the fixing piece. When the temperature sampling assembly is limited in the groove, the protrusion 334 can further limit the temperature sampling assembly, thereby further improving the stability of the installation of the temperature sampling assembly.

[0181] In some embodiments, as Figures 8-10 As shown, the fixing member 33 includes two limiting ribs 333, and the two limiting ribs 333 are in the second direction (refer to Figure 7 The second direction is the direction of the spacing between the poles in the battery cell. Of course, in other embodiments, the number of the limiting ribs can be set to more than two, and the spacing direction of the limiting ribs can also be a direction that forms an angle with the second direction.

[0182] In the embodiment of the present application, by arranging limiting ribs at intervals in the second direction on the fixing member, it is possible to achieve a limiting effect on the temperature sampling component and reserve a certain gap for the installation of the temperature sampling component, thereby reducing the difficulty of installation and improving installation efficiency.

[0183] In some embodiments, combined Figure 4b and Figure 10 As shown, the temperature sampling component 311 further includes a heat conducting member, which is arranged on the temperature collecting member 3111 in the first direction (refer to Figure 4a In the x direction) close to the side of the battery cell, that is, the heat conducting member is located in the groove, and the fixing member 33 in the embodiment of the present application has a first direction (refer to Figure 4a In some embodiments, the limiting rib 333 is provided with a protruding portion 334 protruding toward the groove 3311, and the protruding portion 334 can abut the fixing member 33 in the circumferential direction, thereby improving the stability of the relative position of the fixing member.

[0184] In some embodiments, the fixing member is configured as thermally conductive foam, and the protrusion 334 can be interference-fitted with the fixing member, thereby improving the stability of the relative position of the fixing member.

[0185] The application provides a kind of power utilization equipment, the power utilization equipment includes the battery device according to any one of the above.The battery device includes box, battery monomer and integrated busbar, box is equipped with containing cavity, battery monomer is arranged in containing cavity, battery monomer includes multiple, multiple battery monomers are arranged in containing cavity and form battery monomer assembly, integrated busbar includes signal sampling assembly, confluence component and fixing piece, confluence component is electrically connected multiple battery monomers, signal sampling assembly is electrically connected battery monomer, to collect the working signal parameter of battery monomer, signal sampling assembly includes temperature sampling assembly, fixing piece is abutted temperature sampling assembly on the side of first direction, first direction is the direction of integrated busbar and battery monomer sequentially arranged.The application embodiment is arranged in integrated busbar by fixing piece, by fixing piece abutted temperature sampling assembly in first direction, realize the limit of fixing piece in first direction, reduce the risk of temperature sampling assembly relative to other components in integrated busbar offset, to improve the stability of integrated busbar structure, also improve the reliability of temperature sampling assembly work.

[0186] The application also provides a kind of energy storage device, comprising:

[0187] The battery device according to any one of the above.

[0188] The battery device in the application embodiment is arranged in integrated busbar by fixing piece, by fixing piece abutted temperature sampling assembly in first direction, realize the limit of fixing piece in first direction, reduce the risk of temperature sampling assembly relative to other components in integrated busbar offset, to improve the stability of integrated busbar structure, also improve the reliability of temperature sampling assembly work, further improve the reliability of spring mud more equipment.

[0189] In addition to the above claim embodiments, specific embodiments related to some specific features or their combinations can be preferred, which can be shown in the drawings.

[0190] Although the application has been described with reference to the preferred embodiments, various modifications can be made to it without departing from the scope of the application, and equivalent components can be substituted therein. In particular, the technical features mentioned in each embodiment can be combined in any way as long as there is no structural conflict. The application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that: include: The box body has a receiving cavity inside; A battery cell assembly, comprising a plurality of battery cells arranged in the accommodating cavity; An integrated busbar includes a carrier, a busbar component, a fixing component and a temperature sampling assembly; the busbar component is arranged on the carrier, and the busbar component is electrically connected to a plurality of battery cells; the fixing component is fixed together by the carrier and the busbar component; the temperature sampling assembly is fixed by the fixing component to cooperate with the battery cell, and the temperature sampling assembly is configured to collect temperature information of the battery cell.

2. The battery device according to claim 1, wherein: At least a portion of the fixing member abuts between the current collecting component and the supporting member in a first direction, where the first direction is a thickness direction of the integrated busbar.

3. The battery device according to claim 1, wherein: The fixing member abuts against the temperature sampling assembly on one side of a first direction, and the first direction is a thickness direction of the integrated busbar.

4. The battery device according to claim 3, characterized in that The fixing member at least partially abuts against the current collecting component on the other side of the first direction.

5. The battery device according to claim 4, characterized in that The supporting member is configured as an insulating member, the integrated busbar includes a signal sampling assembly, and the insulating member is at least arranged on a side of the signal sampling assembly close to the battery cell in the first direction; the fixing member is at least partially stacked in the first direction between the insulating member and the busbar component.

6. The battery device according to claim 5, characterized in that The insulating member includes one or more of an insulating film, an injection-molded bracket, and a blister-molded isolation plate.

7. The battery device according to claim 6, characterized in that When the insulating member is configured as an insulating film, the insulating film includes two layers, and the temperature sampling assembly, the converging component, and the fixing member are at least partially laminated between the two layers of the insulating film in the first direction.

8. The battery device according to any one of claims 2 to 7, characterized in that: The integrated busbar further includes a sampling circuit board, the temperature sampling assembly includes a temperature collection component, the temperature collection component is electrically connected to the sampling circuit board, and the fixing component abuts against the temperature collection component on one side of the first direction.

9. The battery device according to claim 8, characterized in that The temperature sampling component also includes: A heat insulating member is abutted between the temperature collecting member and the fixing member in the first direction.

10. The battery device according to any one of claims 2 to 7, characterized in that: The fixing member includes: The main body is provided with a groove, the opening of the groove faces the battery cell in the first direction, and the temperature sampling component is arranged in the groove.

11. The battery device according to claim 10, characterized in that The main body is provided with a penetrating calibration hole, and the calibration hole is arranged close to the groove.

12. The battery device according to claim 11, wherein: There are multiple calibration holes, and the multiple calibration holes are arranged around the groove; and / or the calibration holes are arranged at positions opposite to the groove.

13. The battery device according to claim 10, wherein: The fixing member further comprises: The end portion is connected to the main body portion, and the end portion abuts against the confluence component on one side in the first direction.

14. The battery device according to claim 13, wherein: The fixing member includes two end portions, and the two end portions are respectively connected to two ends of the main body in a second direction, where the second direction is a direction of an interval between poles in the battery cell.

15. The battery device according to claim 14, characterized in that The end portion is integrally formed with the main body portion, and the end portion and the main body portion are spaced apart in the first direction.

16. The battery device according to claim 14, wherein: The end portion is provided with an avoidance hole, and the avoidance hole is an area where the battery cell and the current collecting component are welded.

17. The battery device according to claim 10, characterized in that The main body is provided with a penetrating pressure relief hole, and the pressure relief hole is arranged opposite to the pressure relief piece of the battery cell.

18. The battery device according to claim 13, wherein: The end portion is provided with a through fool-proof hole.

19. The battery device according to claim 14, wherein: The current collecting component includes a buffer portion and two connecting portions, the buffer portion connects the two connecting portions, and the connecting portions are respectively connected to the poles of the battery cells; wherein the end portion abuts against an area of ​​the connecting portion away from the buffer portion.

20. The battery device according to claim 10, wherein: The fixing member further includes a limiting rib, which is protruded relative to the main body along a first direction toward the direction close to the battery cell, and the limiting rib is arranged around the periphery of the groove.

21. The battery device according to claim 20, characterized in that The fixing member further includes a protrusion, which is arranged to protrude relative to the limiting rib toward the direction of the groove.

22. The battery device according to claim 20, wherein: The fixing member includes two limiting ribs, and the two limiting ribs are arranged at intervals in a second direction, where the second direction is the direction of the pole spacing in the battery cell.

23. An electrical device, characterized in that: include: A battery device according to any one of claims 1 to 22.

24. An energy storage device, characterized in that: include: A battery device according to any one of claims 1 to 22.

Images