Battery and power-consuming device

Abstract

Battery characterized in that it comprises: a first battery cell (31) and a second battery cell (32) which are arranged adjacent to each other, and a functional component (33) which is arranged in a gap formed by a first surface (311) of the first battery cell (31) and a second surface (321) of the second battery cell (32); a filling component (34) and / or a first insulating component (351), wherein the filling component (34) fills the edge of the gap, and wherein the first insulating component (351) is located close to the edges of a third surface (312) of the first battery cell (31) and a fourth surface (322) of the second battery cell (32) and covers the gap formed by the first surface (311) and the second surface (321), and wherein the third surface (312) intersects the first surface (311) and the fourth surface (322) intersects the second surface (321).

Description

CROSS-REFERENCE TO RELATED REGISTRATION

[0001] The present application claims priority over the Chinese patent application with application number 202420334454.1 and titled “Battery and power-consuming device”, which was filed on February 23, 2024, and its entire contents are hereby incorporated by reference. TECHNICAL AREA

[0002] The present application relates to the technical field of batteries, in particular a battery and a power-consuming device. STATE OF THE ART

[0003] Energy conservation and emission reduction are crucial for the sustainable development of the automotive industry. Electric vehicles have become an important component of this sustainable development due to their energy-saving and environmentally friendly advantages. Battery technology is a decisive factor influencing the further development of electric vehicles.

[0004] However, during charging and discharging, an increase in the battery's internal temperature can lead to thermal runaway and other problems that negatively impact battery performance and user experience. Therefore, reducing the likelihood of thermal runaway is a pressing challenge in battery technology. CONTENT OF THE PRESENT INVENTION

[0005] One embodiment of the present application provides a battery and a power-consuming device with which the probability of insulation problems, thermal runaway and other problems of the battery cells can be reduced, and thus the overall performance of the battery can be improved.

[0006] In a first aspect, a battery is provided comprising: a first battery cell and a second battery cell arranged adjacent to each other, and a functional component arranged in a gap formed by a first surface of the first battery cell and a second surface of the second battery cell; a filling component and / or a first insulating component, wherein the filling component fills the edge of the gap, and wherein the first insulating component is in close contact with the edges of a third surface of the first battery cell and a fourth surface of the second battery cell and covers the gap formed by the first surface and the second surface, and wherein the third surface intersects the first surface and the fourth surface intersects the second surface.

[0007] In embodiments of the present application, filling the gap between adjacent battery cells with the filling component and / or covering the gap between adjacent battery cells with the insulating component reduces the probability of particles falling into the gap between the battery cells. This, in turn, reduces the probability of insulation problems, thermal runaway problems, and other problems that can occur in the battery cells, thereby improving the overall performance of the battery.

[0008] In some embodiments, the filling component fills the remaining areas within the gap, except for those occupied by the functional component.

[0009] In embodiments of the present application, the gap between two adjacent battery cells is completely filled by arranging the filling component in areas not occupied by the functional component. This improves the uniformity of expansion of the battery cells and thus the cycle performance of the battery. Furthermore, it reduces the probability that particles ejected from a battery cell will fall into the gap between two adjacent battery cells after thermal runaway in that cell. This reduces the likelihood of insulation problems, thermal runaway, and other battery cell issues, thereby improving the overall battery performance.

[0010] In some embodiments, a pressure relief mechanism is provided on the third surface of the first battery cell and / or on the fourth surface of the second battery cell; wherein the filling component and / or the first insulation component are positioned closer to the pressure relief mechanism relative to the functional component.

[0011] In embodiments of the present application, a pressure relief mechanism is provided on the third surface of the first battery cell and / or on the fourth surface of the second battery cell, wherein the filling component and / or the first insulation component are positioned closer to the pressure relief mechanism relative to the functional component. This significantly reduces the probability, after thermal runaway of the battery cell, that the particles ejected by the pressure relief mechanism will fall into the gap between two adjacent battery cells, thereby reducing the likelihood of insulation problems, thermal runaway, and other battery cell issues, and thus improving the overall battery performance.

[0012] In some embodiments, the melting point of the filling component and / or the first insulating component is greater than or equal to 100°C. Thus, in embodiments of the present application, setting the melting point of the filling component and / or the first insulating component to greater than or equal to 100°C effectively reduces the probability of insulation problems, thermal runaway, and other problems caused by particles falling into the gap between two adjacent battery cells in the event of thermal runaway in a battery cell, thereby improving the overall performance of the battery.

[0013] In some embodiments, the filling component protrudes from the third surface of the first battery cell and / or the fourth surface of the second battery cell. Thus, in embodiments of the present application, the arrangement of the filling component protruding from the third surface of the first battery cell and / or the fourth surface of the second battery cell further reduces the probability that particles ejected in the event of thermal runaway will fall into the gap between two adjacent battery cells, thereby reducing the likelihood of insulation problems, thermal runaway, and other battery cell problems, and thus improving the overall battery performance.

[0014] In some embodiments, a first electrode connection is provided on the third surface of the first battery cell and / or a second electrode connection is provided on the fourth surface of the second battery cell; wherein the filling component is not positioned higher than the first electrode connection and / or the second electrode connection.

[0015] In embodiments of the present application, a first electrode terminal is provided on the third surface of the first battery cell and / or a second electrode terminal is provided on the fourth surface of the second battery cell, wherein the filler component is not positioned higher than the first electrode terminal and / or the second electrode terminal, which reduces the influence of the filler component on the first electrode terminal and / or the second electrode terminal, thereby facilitating the processing and manufacturing of the battery. At the same time, the probability of high-temperature particles ejected in the event of thermal runaway of the battery cell falling into the gap between two adjacent battery cells can be reduced, thereby reducing the probability of insulation problems, thermal runaway and other problems of the battery cells and thus improving the overall performance of the battery.

[0016] In some embodiments, the filling component is arranged flush with the first electrode terminal and / or the second electrode terminal. In embodiments of the present application, the filling component is arranged flush with the first electrode terminal and / or the second electrode terminal, thereby simplifying the processing and manufacturing of the battery and simultaneously reducing manufacturing costs.

[0017] In some embodiments, the functional component is arranged in an intermediate region between the first surface and the second surface; wherein the filling component comprises a first filling component and a second filling component, and wherein the first filling component and the second filling component are arranged in at least one of the two edge gaps between the first surface and the second surface.

[0018] In embodiments of the present application, the first filling component and the second filling component are arranged in at least one of the two edge gaps between the first surface and the second surface. This significantly reduces the probability that high-temperature particles ejected in the event of thermal runaway of the battery cell will fall into the gap between two adjacent battery cells, thereby reducing the probability of insulation problems, thermal runaway and other problems of the battery cells and thus improving the overall performance of the battery.

[0019] In some embodiments, the first filling component is arranged flush with the third surface and the fourth surface, and / or wherein the second filling component is arranged flush with a fifth surface of the first battery cell and a sixth surface of the second battery cell, and wherein the third surface is arranged opposite the fifth surface and the fourth surface opposite the sixth surface.

[0020] In embodiments of the present application, the filling component is arranged flush with the surface of the battery cell. This reduces the probability that, after thermal runaway of one of the battery cells, the ejected particles will fall into the gap between two adjacent battery cells. This reduces the probability of insulation problems, thermal runaway, and other problems of the battery cells, and thus improves the overall performance of the battery. Furthermore, this manufacturing method is simple and efficient, which facilitates the processing and manufacturing of the battery.

[0021] In some embodiments, a pressure relief mechanism is provided on the third surface of the first battery cell and / or on the fourth surface of the second battery cell; wherein one of the first filling component and the second filling component is positioned near the pressure relief mechanism, while the other is positioned away from it, and wherein the melting point of the component near the pressure relief mechanism is higher than that of the component farther from it.

[0022] In embodiments of the present application, one of the first filling components and the second filling component are positioned near the pressure relief mechanism, while the other is positioned further away from it, wherein the melting point of the component near the pressure relief mechanism is higher than that of the component further away from it, thereby significantly reducing the probability that, after thermal runaway of the battery cell, the particles ejected by the pressure relief mechanism will fall into the gap between two adjacent battery cells, thus reducing the probability of insulation problems, thermal runaway and other problems of the battery cells and thus improving the overall performance of the battery, while at the same time contributing to a reduction in the manufacturing costs of the battery.

[0023] In some embodiments, the battery further comprises a second insulating component, wherein the second insulating component is located close to the edges of the fifth surface of the first battery cell and the sixth surface of the second battery cell and covers the gap formed by the first surface and the second surface, wherein the fifth surface intersects the first surface and the sixth surface intersects the second surface, and wherein the third surface is arranged opposite the fifth surface and the fourth surface opposite the sixth surface.

[0024] In embodiments of the present application, the second insulation component is arranged to cover the gap between adjacent battery cells, so that the particles ejected in the event of thermal runaway fall less into the gap between two adjacent battery cells, thereby reducing the likelihood of insulation problems, thermal runaway and other problems of the battery cells and thus improving the overall performance of the battery.

[0025] In some embodiments, the material of the first insulation component and / or the second insulation component is a thermoplastic resin or a thermoplastic polyester. Thus, in the embodiments of the present application, the selection of thermoplastic resin or thermoplastic polyester as the material for the first insulation component and / or the second insulation component—materials characterized by high plasticity, good chemical resistance, and favorable mechanical properties—significantly reduces the likelihood that, following thermal runaway of the battery cell, the particles ejected by the battery will fall into the gap between two adjacent battery cells. This, in turn, reduces the probability of insulation problems, thermal runaway, and other battery cell issues, and thus improves the overall battery performance.

[0026] In some embodiments, the filling component consists of one of the following materials: rubber, silica gel, silicone, epoxy resin, and compressible foam.

[0027] In embodiments of the present application, the choice of material for the filling component allows for flexible adaptation to different battery types. This approach reduces the likelihood of insulation problems, thermal runaway, and other issues in the battery cells, while simultaneously lowering the battery's manufacturing costs.

[0028] In some embodiments, the first insulation component and / or the second insulation component are configured as a plate-like structure or as a projecting T-shaped structure, with at least a portion of the projecting section being filled into the edge of the gap. In embodiments of the present application, the first insulation component and / or the second insulation component are configured as a plate-like structure or as a projecting T-shaped structure, with at least a portion of the projecting section being filled into the edge of the gap, thereby facilitating the processing and assembly of the battery and simultaneously reducing manufacturing costs.

[0029] In a second aspect, a power-consuming device is provided, comprising a battery in the first aspect or in any embodiment of the first aspect, wherein the battery pack is used to supply the power-consuming device with electrical energy. BRIEF DESCRIPTION OF THE DRAWING Fig. Figure 1 shows a schematic diagram of the structure of a vehicle in an embodiment of the present application. Fig. Figure 2 shows a schematic diagram of the structure of a battery in an embodiment of the present application. Fig. Figure 3 shows a schematic structure diagram of a battery cell provided by an embodiment of the present application. Fig. Figure 4 shows a schematic structure diagram of a battery provided by an embodiment of the present application. Fig. Figure 5 shows a schematic structure diagram of another battery provided by an embodiment of the present application. Fig. Figure 6 shows a schematic structure diagram of another battery provided by an embodiment of the present application. Fig. Figure 7 shows a schematic structure diagram of another battery provided by an embodiment of the present application. Fig. Figure 8 shows a schematic structure diagram of another battery provided by an embodiment of the present application. Fig. Figure 9 shows a schematic structure diagram of another battery provided by an embodiment of the present application. Fig. Figure 10 shows a schematic structure diagram of another battery provided by an embodiment of the present application. Reference symbol list 1 vehicle 11 Engine 12 Control 10 batteries 100 battery cases 110 First section of the battery casing 20 battery cells 120 Second section of the battery housing 214 Electrode connection 214a Positive electrode connection 214b Negative electrode connection 212 Cover plate 22 Electrode assembly 23 Connecting element 221a First tab 222a Second tab 211 Housing body 213 Pressure relief mechanism 215 Lower wall 310 First electrode connection 320 Second electrode connection 312 Third surface 322 Fourth surface 341 First filling component 311 First surface 321 Second surface 31 First battery cell 32 Second battery cell 33 Functional component 313 Fifth surface 342 Second filling component 323 Sixth surface 34 Filling component 35 Insulation component 351 First insulation component 352 Second insulation component

[0030] The figures in the attached drawings are not shown to scale. DETAILED DESCRIPTION

[0031] The embodiments of the present application are explained in more detail below in connection with the drawings and exemplary embodiments. The detailed description of the following exemplary embodiments and the accompanying drawings serve to illustrate the principles of the present application by way of example, but are not to be understood as limiting the scope of the present application, i.e., the present application is not limited to the exemplary embodiments described herein.

[0032] The explanatory note to this application should clarify that "several" means two or more than two unless otherwise defined; and the directional or positional relationships using terms such as "above," "below," "left," "right," "inside," "outside," etc., serve only to clarify the present application and facilitate its explanation, and do not indicate or suggest that the depicted devices or elements have specific orientations or should be constructed and operated in specific directions. Therefore, they cannot be construed as limiting the present application. Furthermore, the terms "the first," "the second," and "the third" are used only to clarify the objective and cannot be understood as indicating or implying any relative meaning. "Vertical" does not denote strict verticality but falls within the permissible tolerance limits."Parallel" does not refer to strict parallelism, but falls within the permissible tolerance limits.

[0033] Directional terms appearing in the following description refer to the orientations shown in the drawings and do not represent any limitations regarding the specific structure of the present application. It should also be noted that the terms "installed," "coupled," and "connected" in the explanatory notes to the present application should be understood in a broader sense where no clear rules or provisions exist. For example, it could be a fixed connection as well as a detachable connection, or an integrated connection; it could be a direct connection or an indirect connection via a medium. The person skilled in the art in this field will be able to understand the specific meanings of the aforementioned terms in the present application based on the specific situations.

[0034] The terms "and / or" in this application only represent an associative relationship that describes the related objects, meaning that there can be three types of relationships, e.g., A and / or B, which can signify these three situations: that A exists, that A and B exist simultaneously, and that B exists. Furthermore, the symbol " / " in this application generally indicates that the related objects are in an "or" relationship.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the meanings generally understood by those skilled in the art in the field of the present application. The terms used in the description of the present application serve solely to describe specific embodiments and are not intended to limit the scope of the present application. The terms "comprising" and "comprising," and all variations thereof, in the description, claims, and accompanying drawings of the present application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, and accompanying drawings of the present application are used to distinguish different objects from one another and are not used to explain a particular sequence or a primary and secondary relationship.

[0036] The “embodiment” mentioned in the present application means that the specific features, structures, or properties described in connection with the embodiment may be included in at least one embodiment of the present application. The appearance of a phrase in different places in the description does not necessarily refer to the same embodiment or to an independent or alternative embodiment that is mutually exclusive with other embodiments. The person skilled in the art in this field clearly and implicitly understands that the embodiment described in the present application may be combined with another embodiment.

[0037] In the present application, a battery refers to a physical module comprising one or more battery cells for the purpose of providing electrical energy. For example, the battery referred to herein may comprise a battery module or a battery pack. A battery generally comprises a battery casing for encapsulating one or more battery cells. The battery casing may reduce the likelihood of liquids or other foreign substances interfering with the charging or discharging of the battery cells.

[0038] Optionally, the battery cell may comprise a lithium-ion secondary battery, a lithium-ion primary battery, a lithium-sulfur battery, a sodium-lithium-ion battery, a sodium-ion battery, or a magnesium-ion battery, without limiting the embodiments described in this application to these. The battery cell may be cylindrical, flat, rectangular, or have another shape, without limiting the embodiments described in this application to these. Battery cells are generally classified into three types based on their encapsulation: cylindrical battery cells, prismatic cells, and pouch battery cells, without limiting the embodiments described in this application to these.

[0039] A battery cell comprises an electrode assembly and an electrolyte solution. The electrode assembly consists of a positive electrode foil, a negative electrode foil, and a separating film. The battery cell functions primarily through the movement of metal ions between the positive and negative electrode foils. The positive electrode foil includes a positive current collector and a positive active material layer. The positive active material layer is applied to the surface of the positive current collector. A portion of the current collector not coated with the positive active material layer extends beyond the portion coated with the positive active material layer, with the uncoated portion serving as the positive tab.Using lithium-ion batteries as an example, the positive current collector can be made of aluminum, while the positive active material can comprise lithium cobalt oxide, lithium iron phosphate, ternary lithium compounds, or lithium manganese oxide. The negative electrode foil includes a negative current collector and a negative active material layer. The negative active material layer is applied to the surface of the negative current collector. A portion of the current collector not coated with the negative active material layer extends beyond the portion that is coated, with this uncoated portion serving as the negative tab. The negative current collector material can be copper, while the negative active material can be carbon or silicon.To accommodate high currents without melting, several positive tabs are stacked on top of each other, and several negative tabs are stacked on top of each other. The separating film material can be polypropylene (PP) or polyethylene (PE). Furthermore, the electrode assembly can have either a wound or a laminated structure, without the embodiments of the present application being limited thereto.

[0040] Advances in battery technology require the simultaneous consideration of multiple design factors, such as performance parameters including energy density, cycle life, discharge capacity, and charge / discharge rates. Furthermore, the battery's safety and stability must also be taken into account.

[0041] In batteries consisting of multiple cells, gaps typically exist between adjacent cells. If a cell experiences thermal runaway, high-temperature gases, liquids, particles, and other outflows escape from it. These outflows can affect neighboring cells; for example, ejected particles can fall into the gap between two cells, leading to insulation problems and potentially triggering thermal runaway in those cells.

[0042] In particular, functional components such as cooling plates, thermal insulation pads, or buffer pads can be positioned between adjacent battery cells. However, due to the height difference between these functional components and the battery cells, combined with their typical arrangement in the central area between the battery cells, gaps are created between the adjacent battery cells. The presence of such gaps increases the likelihood of thermal runaway within the battery.

[0043] Against this background, an embodiment of the present application provides a battery comprising a first battery cell and a second battery cell arranged adjacent to each other, and a functional component arranged in a gap formed by a first surface of the first battery cell and a second surface of the second battery cell; wherein the battery further comprises a filling component and / or a first insulating component, and wherein the filling component fills the edge of the gap formed by the first surface and the second surface, and wherein the first insulating component is in close contact with the edges of a third surface of the first battery cell and a fourth surface of the second battery cell and covers the gap formed between the first surface and the second surface, and wherein the third surface intersects the first surface and the fourth surface intersects the second surface.Filling the gap between adjacent battery cells with the filler component and / or covering the gap between adjacent battery cells with the insulating component reduces the likelihood of particles falling into the gap between the battery cells. This, in turn, reduces the likelihood of insulation problems, thermal runaway issues, and other problems that can occur in the battery cells, thereby improving the overall battery performance.

[0044] The technical solutions described in the embodiments of this application are applicable to various devices that use batteries, such as mobile phones, portable devices, laptops, electric bicycles, electric toys, power tools, electric vehicles, ships, and spacecraft. Spacecraft include, for example, airplanes, rockets, space shuttles, and spacecraft.

[0045] It is understood that the technical solutions described in the embodiments of this application are not limited to the devices mentioned above, but can be applied to all battery-powered devices. For the sake of brevity, the following embodiments are illustrated using the example of electric vehicles.

[0046] For example, it shows Fig. Figure 1 shows a schematic diagram of the structure of a vehicle 1 in an embodiment of the present application. The vehicle 1 can be a fuel-powered vehicle, a gas-powered vehicle, or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or a REEV vehicle, etc. Inside the vehicle 1, a motor 11, a control unit 12, and a battery 10 can be arranged. The control unit 12 regulates the power supply from the motor 11 through the battery 10. The battery 10 can be located, for example, on the floor, at the front, or at the rear of the vehicle 1. The battery 10 can supply power to the vehicle 1; for example, the battery 10 can serve as an operating power source for the electrical systems of the vehicle 1. This includes meeting the power requirements during the starting process, navigation, and the operating functions of the vehicle 1.In a further embodiment of the present application, the battery 10 can not only serve as an operating current source for the vehicle 1, but can also act as the drive current source of the vehicle 1 and replace or partially replace fuel or natural gas to provide motive power to the vehicle 1.

[0047] To meet varying current requirements, the battery can comprise multiple battery cells, which can be connected in series, parallel, or a mixed configuration. A mixed configuration refers to a combination of series and parallel connections. The battery can also be called a battery pack. Optionally, multiple battery cells can first be connected in series, parallel, or a mixed configuration to form battery modules, and then multiple battery modules can be connected in series, parallel, or a mixed configuration to form the battery. That is, multiple battery cells can directly form the battery, or they can first form battery modules, with the battery modules then forming the battery.

[0048] For example, it shows Fig. 2 A schematic diagram of the structure of a battery 10 in an embodiment of the present application, wherein the battery 10 may comprise several battery cells 20. The battery 10 may further comprise a battery housing 100 (or referred to as a casing) having a hollow internal structure, wherein several battery cells 20 are housed in the battery housing 100. As in Fig. As shown in Figure 2, the battery housing 100 can comprise two sections, each designated as the first section of the battery housing 110 and the second section of the battery housing 120, wherein the first section of the battery housing 110 and the second section of the battery housing 120 interlock. The shapes of the first section of the battery housing 110 and the second section of the battery housing 120 can be determined according to the shape of the combination of several battery cells 20. Both the first section of the battery housing 110 and the second section of the battery housing 120 can each have an opening. For example, both the first section of the battery housing 110 and the second section of the battery housing 120 can be hollow cuboid parts in which only one surface serves as an opening.The opening of the first section of the battery housing 110 is positioned opposite the opening of the second section of the battery housing 120, and the first section of the battery housing 110 and the second section of the battery housing 120 interlock to form the battery housing with a sealed chamber. Several battery cells 20, connected in parallel, in series, or in a mixed configuration, are housed in the battery housing 100, which is formed by the interlocking of the first section of the battery housing 110 and the second section of the battery housing 120.

[0049] Optionally, the battery 10 can include further structures, which will not be described in detail here. For example, the battery 10 can additionally include a busbar assembly for establishing electrical connections between several battery cells 20, for example, in parallel, in series, or in a mixed configuration. In particular, the busbar assembly can establish an electrical connection between the battery cells 20 by connecting the electrode terminals of the battery cells 20. Furthermore, the busbar assembly can be welded to the electrode terminals of the battery cells 20. The electrical energy from the several battery cells 20 can then be conducted through the battery casing via the conductive mechanism and dissipated. Optionally, the conductive mechanism can also be part of the busbar assembly.

[0050] The number of battery cells 20 can be adjusted to any value according to different power requirements. Multiple battery cells 20 can be connected in series, parallel, or a mixed configuration to achieve greater capacity or power. Since each battery 10 can contain a significant number of battery cells 20, these cells 20 can be arranged in groups to facilitate installation, with each group forming a battery module. The number of battery cells 20 within a battery module is unlimited and can be configured according to requirements.

[0051] Fig. Figure 3 shows a schematic diagram of the structure of a battery cell 20 in an embodiment of the present application.

[0052] As in Fig. As shown in Figure 3, the battery cell 20 comprises one or more electrode assemblies 22, a housing body 211, and a cover plate 212. The walls of the housing body 211 and the cover plate 212 are collectively referred to as the walls of the battery cell 20. The shape of the housing body 211 is determined by the configuration of one or more electrode assemblies 22. For example, the housing body 211 can be a hollow cuboid, cube, or cylinder, with one of the faces of the housing body 211 having an opening to allow the arrangement of one or more electrode assemblies 22 within the housing body 211. If the housing body 211 is, for example, a hollow cuboid or cube, one of the faces of the housing body 211 serves as the opening face, meaning that this face has no wall material and thus the interior and exterior of the housing body 211 are in contact with each other.If the housing body 211 is a hollow cylinder, one of its end faces serves as the opening surface, meaning that this end face has no wall material and thus the interior and exterior of the housing body 211 are in contact with each other. The cover plate 212 covers the opening and is connected to the housing body 211 to form a sealed chamber for receiving the electrode assembly 22. The housing body 211 is filled internally with an electrolyte, for example, an electrolyte solution.

[0053] The battery cell 20 can further comprise two electrode terminals 214, which may be arranged on the cover plate 212. The cover plate 212 is typically flat, with the two electrode terminals 214 attached to the flat surface of the cover plate 212. The two electrode terminals are each referred to as the positive electrode terminal 214 and the negative electrode terminal 214a. Each electrode terminal 214 is accordingly provided with a connecting element 23, which may be referred to as a connector, wherein the connecting element is arranged between the cover plate 212 and the electrode assembly 22 and serves to establish an electrical connection between the electrode assembly 22 and the electrode terminals 214.

[0054] As in Fig. As shown in Figure 3, each electrode assembly 22 comprises a first tab 221a and a second tab 222a. The first tab 221a and the second tab 222a are of opposite polarity. For example, if the first tab 221a is a positive tab, the second tab 222a is a negative tab. The first tab 221a of one or more electrode assemblies 22 is connected to an electrode terminal via a connecting element 23, while the second tab 222a of one or more electrode assemblies 22 is connected to another electrode terminal via a different connecting element 23. For example, the positive electrode terminal 214a is connected to the positive tab via a connecting element 23, while the negative electrode terminal 214b is connected to the negative tab via another connecting element 23.

[0055] Within this battery cell 20, the electrode assembly 22 can be configured as a single unit or as multiple units, depending on practical requirements. As shown in Fig. As shown in Figure 3, four independent electrode assemblies 22 can be arranged in the battery cell 20.

[0056] For example, a pressure relief mechanism 213 can also be provided on a wall of the battery cell 20. The pressure relief mechanism 213 is activated when the internal pressure or temperature of the battery cell 20 reaches a threshold value in order to release the internal pressure or temperature.

[0057] Optionally, in one embodiment of the present application, the pressure relief mechanism 213 and the electrode connections 214 are provided on different walls of the battery cell 20. For example, as shown in Fig. As shown in Figure 3, the electrode terminal 214 of the battery cell 20 is positioned on the upper wall of the battery cell 20, namely the cover plate 212. The pressure relief mechanism 213 is positioned on another wall of the battery cell 20, which differs from the upper wall; for example, the pressure relief mechanism 213 may be positioned on the lower wall 215 opposite the upper wall. For illustration, the lower wall 215 is shown in Figure 3. Fig. 3 shown separately from the housing body 211; however, this does not mean that the underside of the housing body 211 necessarily has to have an opening.

[0058] Optionally, in another embodiment of the present application, the pressure relief mechanism 213 and the electrode terminals 214 are provided on the same wall of the battery cell 20. For example, both the electrode terminal 214 and the pressure relief mechanism 213 can be positioned on the upper wall of the battery cell 20, namely the cover plate 212.

[0059] The aforementioned pressure relief mechanism 213 can form an integral part of the wall on which it is located, or it can be a separate structure that is attached to this wall, for example, by welding. In the Fig. In the embodiment shown in Figure 3, the pressure relief mechanism 213, when it is part of the lower wall 215, can be formed, for example, by a notch in the lower wall 215. The thickness of the lower wall 215 corresponding to this notch is less than the thickness of the pressure relief mechanism 213 in other areas outside the notch. The notch represents the weakest point of the pressure relief mechanism 213. If excessive gas generated within the battery cell 20 causes the internal pressure of the housing body 211 to rise and reach a threshold, or if heat generated by internal reactions within the battery cell 20 causes its internal temperature to rise and reach a threshold, the pressure relief mechanism 213 can break at the notch, creating a connection between the inside and outside of the housing body 211.This allows gas pressure and temperature to escape to the outside through the breakage of the pressure relief mechanism 213, thereby reducing the probability of an explosion inside the battery cell 20.

[0060] Furthermore, the pressure relief mechanism 213 can be various possible pressure relief mechanisms, without the embodiments of the present application being limited thereto. For example, the pressure relief mechanism 213 can be a thermally sensitive pressure relief mechanism configured to melt when the internal temperature of the battery cell 20, into which the pressure relief mechanism 213 is integrated, reaches a threshold; and / or the pressure relief mechanism 213 can be a pressure-sensitive pressure relief mechanism configured to break when the internal pressure within the battery cell 20, which is equipped with the pressure relief mechanism 213, reaches a threshold.

[0061] The above refers to Fig. Figure 3 illustrates a schematic structure diagram of a battery cell 20 provided by an embodiment of the present application. In connection with Fig. Figure 4-10 illustrates a battery provided by the embodiment of the present application. Fig. Figures 4-10 show cross-sectional views of battery 10. It should be noted that in some embodiments the specific structure of battery 10 differs from that shown in the Fig. can refer to 1-3 described above.

[0062] As in Fig. Figures 4 to 10 show an embodiment of the present application providing a battery 10 comprising: a first battery cell 31 and a second battery cell 32 arranged adjacent to each other, and a functional component 33 arranged in a gap formed by a first surface 311 of the first battery cell 31 and a second surface 321 of the second battery cell 32;a filling component 34 and / or a first insulating component 351, wherein the filling component 34 fills the edge of the gap formed by the first surface 311 and the second surface 321, and wherein the first insulating component 351 is located close to the edges of a third surface 312 of the first battery cell 31 and a fourth surface 322 of the second battery cell 32 and covers the gap formed by the first surface 311 and the second surface, and wherein the third surface 312 intersects the first surface 311 and the fourth surface 322 intersects the second surface 321.

[0063] The battery 10 in the embodiments of the present application can comprise at least two battery cells 20, such as the first battery cell 31 and the second battery cell 32, which are located in the Fig. 4-10 are shown.

[0064] The functional component 33 is positioned between the first battery cell 31 and the second battery cell 32. It is a component that performs a specific function and thereby improves the overall performance of the battery 10. Examples include a thermal insulation pad, a cooling plate, or a buffer pad.

[0065] The battery 10 can simultaneously comprise both a filling component 34 and a first insulating component 351, as shown in Fig. 4 and Fig. 5 shown, or it may include either of the two, as in Fig. 6-10 shown. For example, the battery 10 may comprise the filling component 34, or alternatively, the battery 10 may comprise the first insulating component 351, without the present application being limited thereto.

[0066] The first surface 311 and the third surface 312, as well as the second surface 321 and the fourth surface 322, each form the outer surfaces of the first battery cell 31 and the second battery cell 32. The first surface 311 and the second surface 321 are the surfaces that form the gap between the two battery cells 20, or alternatively, they are the two surfaces on the two battery cells 20 that are closest to each other.

[0067] The functional component 33 is positioned within the gap between adjacent battery cells 20. It is understood that the functional component 33 is located in the middle region or at one end of the first surface 311 and the second surface 321, meaning that there is a height difference between the functional component 33 and the battery cells 20, so that the functional component does not occupy the entire area of ​​the gap between adjacent battery cells 20. Furthermore, the functional component 33 can be in close proximity to the first surface 311 and the second surface 321 or spaced apart from the first surface 311 and / or the second surface 321, i.e., there can be a gap between it and the first surface 311 and / or the second surface 321. Optionally, the first surface 311 and the second surface 321 can be provided with a pressure relief mechanism, such as the one described in Fig. 3 pressure relief mechanism shown 213.

[0068] The third surface 312 intersects the first surface 311. In a square battery cell 20, for example, the third surface 312 is essentially perpendicular to and connected with the first surface 311. Similarly, the fourth surface 322 intersects the second surface 321. In a square battery cell 20, the fourth surface 322 is essentially perpendicular to the second surface 321.

[0069] The number of filling components 34 can be one or more, for example two, without the present application being limited thereto. Similarly, the number of insulating components 35 can be one or more, for example two, without the present application being limited thereto.

[0070] Filling the gap between adjacent battery cells 20 with the filling component 34 and / or covering the gap between adjacent battery cells 20 with the insulating component 35 reduces the probability of particles falling into the gap between the battery cells 20. This, in turn, reduces the probability of insulation problems, thermal runaway problems, and other problems that can occur in the battery cells 20, thereby improving the overall performance of the battery 10.

[0071] In some embodiments, the filling component 34 fills the remaining areas within the gap, except for those occupied by the functional component 33.

[0072] For example, the filler component 34 can be configured to match or interlock the shape of the functional component 33, thereby filling the edge gap. Alternatively, the filler component 34 and the functional component 33 occupy the entire area of ​​the gap between two adjacent battery cells 20.

[0073] By arranging the filling component 34 in areas not occupied by the functional component 33, the gap between two adjacent battery cells 20 is completely filled. This improves the uniformity of expansion of the battery cells 20 and thus the cycle performance of the battery 10. Furthermore, it reduces the probability that particles ejected from a battery cell 20 will fall into the gap between two adjacent battery cells 20 after a thermal runaway in that cell 20. This reduces the likelihood of insulation problems, thermal runaway, and other issues affecting the battery cells 20, thereby improving the overall performance of the battery 10.

[0074] Optionally, the filling component 34 can also be shaped in such a way that it does not correspond to the shape of the functional component 33. In Fig. For example, the functional component 33 has arc-shaped ends, while the filling component 34 is rectangular. After being poured into the edge gap, it lies tangentially to the functional component 33.

[0075] It is understood that filling components 34 can be used to fill various areas of the gap between two adjacent battery cells 20 within the battery 10. Fig. 4 For example, filling components 34 can be present not only at the two edge gaps in the y-direction, but also at at least one edge gap in the z-direction, with the x-, y- and z-directions being perpendicular to each other.

[0076] It should be noted that the gap between two adjacent battery cells 20 within the battery 10 arises due to the functional component 33 located between the two battery cells 20. Since the functional component 33 has a height difference relative to the battery cells 20, it cannot completely fill the gap between them.

[0077] In some embodiments, a pressure relief mechanism is provided on the third surface 312 of the first battery cell 31 and / or on the fourth surface 322 of the second battery cell 32; wherein the filling component 34 and / or the first insulating component 351 are positioned closer to the pressure relief mechanism relative to the functional component 33. For example, the pressure relief mechanism of the aforementioned Fig. 3. Pressure relief mechanism 213 shown.

[0078] In embodiments of the present application, a pressure relief mechanism is provided on the third surface 312 of the first battery cell 31 and / or on the fourth surface 322 of the second battery cell 32, wherein the filling component 34 and / or the first insulation component 351 are positioned closer to the pressure relief mechanism relative to the functional component 33, thereby significantly reducing the probability that, after a thermal runaway of the battery cell 20, the particles ejected by the pressure relief mechanism will fall into the gap between two adjacent battery cells 20, thus reducing the probability of insulation problems, thermal runaway and other problems of the battery cells and thus improving the overall performance of the battery 10.

[0079] In some embodiments, the melting point of the filling component 34 and / or the first insulating component 351 is greater than or equal to 100°C. Thus, in embodiments of the present application, by setting the melting point of the filling component 34 and / or the first insulating component 351 to greater than or equal to 100°C, the probability of insulation problems, thermal runaway, and other problems caused by particles falling into the gap between two adjacent battery cells 20 in the event of thermal runaway in a battery cell 20 can be effectively reduced, thereby improving the overall performance of the battery 10.

[0080] In some embodiments, the filling component 34 protrudes from the third surface 312 of the first battery cell 31 and / or the fourth surface 322 of the second battery cell 32. Thus, in embodiments of the present application, the arrangement of the filling component 34 protruding from the third surface 312 of the first battery cell 31 and / or the fourth surface 322 of the second battery cell 32 further reduces the probability that particles ejected in the event of thermal runaway of battery cell 20 will fall into the gap between two adjacent battery cells 20, thereby reducing the probability of insulation problems, thermal runaway, and other problems of the battery cells 20 and thus improving the overall performance of the battery 10.

[0081] In some embodiments, a first electrode connection 310 is provided on the third surface 312 of the first battery cell 31 and / or a second electrode connection 320 is provided on the fourth surface 322 of the second battery cell 32, wherein the filler component 34 is positioned no higher than the first electrode connection 310 and / or the second electrode connection 320. For example, the first electrode connection 310 and / or the second electrode connection 320 of the in Fig. The electrode connection shown above is 214.

[0082] In embodiments of the present application, a first electrode connection 310 is provided on the third surface 312 of the first battery cell 31 and / or a second electrode connection 320 is provided on the fourth surface 322 of the second battery cell 32, wherein the filling component 34 is positioned no higher than the first electrode connection 310 and / or the second electrode connection 320, which reduces the influence of the filling component 34 on the first electrode connection 310 and / or the second electrode connection 320, thereby facilitating the processing and manufacture of the battery 10. At the same time, the probability that the high-temperature particles emitted in the event of thermal runaway of the battery cell 20 fall into the gap between two adjacent battery cells 20 can be reduced, thereby reducing the probability of insulation problems.thermal runaway and other problems of the battery cells 20 are reduced, thus improving the overall performance of the battery 10.

[0083] In some embodiments, the filling component 34 is arranged flush with the first electrode connection 310 and / or the second electrode connection 320. In embodiments of the present application, the filling component 34 is arranged flush with the first electrode connection 310 and / or the second electrode connection 320, thereby facilitating the processing and manufacture of the battery 10 and simultaneously reducing manufacturing costs.

[0084] In some embodiments, the functional component 33 is arranged in an intermediate region between the first surface 311 and the second surface 321; wherein the filling component 34 comprises a first filling component 341 and a second filling component 342, and wherein the first filling component 341 and the second filling component 342 are arranged in at least one of the two edge gaps between the first surface 311 and the second surface 321.

[0085] In embodiments of the present application, the first filling component 341 and the second filling component 342 are arranged in at least one of the two edge gaps between the first surface 311 and the second surface 321, thereby significantly reducing the probability that the high-temperature particles ejected in the event of thermal runaway of the battery cell 20 will fall into the gap between two adjacent battery cells 20, thus reducing the probability of insulation problems, thermal runaway and other problems of the battery cells 20 and thus improving the overall performance of the battery 10.

[0086] In some embodiments, the first filling component 341 is arranged flush with the third surface 312 and the fourth surface 322, and / or wherein the second filling component 342 is arranged flush with a fifth surface 313 of the first battery cell 31 and a sixth surface 323 of the second battery cell 32, and wherein the third surface 312 is arranged opposite the fifth surface 313 and the fourth surface 322 opposite the sixth surface 323.

[0087] After filling the edge gap, the filling component 34 can be arranged flush with the surfaces of the battery cells facing the edges. For better understanding, for example, as in Fig. Figures 4-10 illustrate this, with directional terms such as "top" and "bottom" used in conjunction with the drawings for clarification. The upper first fill component 341 can be flush with the upper third surface 312 and the upper fourth surface 322, while the lower second fill component 342 can be flush with the lower fifth surface 313 and the lower sixth surface 323. Alternatively, in the y-direction, the first fill component 341 and the second fill component 342 are each filled into the upper and lower edge gaps and arranged flush with the corresponding surfaces.

[0088] In a square battery cell 20, the third surface 312 can be parallel to the fifth surface 313 and the fourth surface 322 can be parallel to the sixth surface 323.

[0089] By arranging the filling component 34 flush with the surface of the battery cell 20, the probability that, after thermal runaway of one of the battery cells 20, the ejected particles will fall into the gap between two adjacent battery cells 20 can be reduced, thereby reducing the probability of insulation problems, thermal runaway and other problems of the battery cells 20 and thus improving the overall performance of the battery 10.

[0090] In some embodiments, a pressure relief mechanism is provided on the third surface 312 of the first battery cell 31 and / or on the fourth surface 322 of the second battery cell 32; wherein one of the first filling component 341 and the second filling component 342 is positioned near the pressure relief mechanism, while the other is positioned away from it, and wherein the melting point of the component near the pressure relief mechanism is higher than that of the component away from it.

[0091] In embodiments of the present application, one of the first filling component 341 and the second filling component 342 is positioned near the pressure relief mechanism, while the other is positioned further away. The melting point of the component near the pressure relief mechanism is higher than that of the component further away. This significantly reduces the probability that, after thermal runaway of the battery cell 20, the particles ejected by the pressure relief mechanism will fall into the gap between two adjacent battery cells 20. This reduces the probability of insulation problems, thermal runaway, and other battery cell problems, thus improving the overall performance of the battery 10. Simultaneously, this contributes to reducing the manufacturing costs of the battery 10.

[0092] In exemplary embodiments of the present application, as in Fig. Figure 5 shows that the battery 10 further comprises a second insulating component 352, wherein the second insulating component 352 continues to be in close proximity to the edges of the fifth surface 313 of the first battery cell 31 and the sixth surface 323 of the second battery cell 32 and covers the gap formed by the first surface 311 and the second surface 321, and wherein the fifth surface 313 intersects the first surface 311 and the sixth surface 323 intersects the second surface 321, and wherein the third surface 312 is arranged opposite the fifth surface 313 and the fourth surface 322 is arranged opposite the sixth surface 323.

[0093] For better understanding, directional terms such as "up" and "down" can be used in conjunction with the drawings. As in Fig. As shown in Figure 5, the battery 10 can include a lower second insulation component 352 in addition to the upper first insulation component 351.

[0094] The second insulation component 352 is arranged to cover the gap between adjacent battery cells 20, so that the particles ejected in the event of thermal runaway fall less into the gap between two adjacent battery cells 20, thereby reducing the likelihood of insulation problems, thermal runaway and other problems of the battery cells 20 and thus improving the overall performance of the battery 10.

[0095] In some embodiments, the material of the first insulation component 351 and / or the second insulation component 352 is a thermoplastic resin or a thermoplastic polyester. For example, the material of the first insulation component 351 and / or the second insulation component 352 includes, but is not limited to, polypropylene, polyethylene terephthalate, polybutylene terephthalate, polyphenylene sulfide, and polyformaldehyde.

[0096] In the embodiments of the present application, the selection of thermoplastic resin or thermoplastic polyester as the material for the first insulation component 351 and / or the second insulation component 352 – materials characterized by high plasticity, good chemical resistance and favorable mechanical properties – significantly reduces the probability that, after a thermal runaway of the battery cell 20, the particles ejected by the battery 10 will fall into the gap between two adjacent battery cells 20, thereby reducing the probability of insulation problems, thermal runaway and other problems of the battery cells 20 and thus improving the overall performance of the battery 10.

[0097] In embodiments of the present application, the filling component 34 consists of one of the following materials: rubber, silica gel, silicone, epoxy resin and compressible foam.

[0098] Rubber types include ethylene propylene diene monomer (EPDM) rubber and silicone rubber. Filler adhesives are colloidal substances that cure upon contact with air or light waves, such as foam adhesives, structural adhesives, silicone adhesives, and joint sealants. Compressible foams include polyurethane foam and melamine foam.

[0099] In embodiments of the present application, the choice of material for the filling component 34 allows for flexible adaptation to different battery types. This approach reduces the probability of insulation problems, thermal runaway, and other problems of the battery cells 20, while simultaneously lowering the manufacturing costs of the battery 10.

[0100] In some embodiments, the first insulating component 351 and / or the second insulating component 352 are configured as a plate-like structure or as a projecting T-shaped structure, with at least a portion of the projecting section being inserted into the edge of the gap. In embodiments of the present application, the first insulating component 351 and / or the second insulating component 352 are configured as a plate-like structure or as a projecting T-shaped structure, with at least a portion of the projecting section being inserted into the edge of the gap, thereby facilitating the processing and assembly of the battery 10 and simultaneously reducing manufacturing costs.

[0101] An embodiment of the present application further provides a power-consuming device comprising a battery 10 in one of the above embodiments, wherein the battery 10 is configured to supply the power-consuming device with electrical energy.

[0102] Optionally, the power-consuming device can be a vehicle, a ship, or an aircraft or spacecraft.

[0103] Referring to Fig.Figure 4 provides an embodiment of the present application comprising a battery 10 comprising: a first battery cell 31 and a second battery cell 32 arranged adjacent to each other, and a functional component 33 arranged in a gap formed by a first surface 311 of the first battery cell 31 and a second surface 321 of the second battery cell 32;a filling component 34 and / or a first insulating component 351, wherein the filling component 34 fills the remaining areas within the gap, except for those occupied by the functional component 33, and is arranged flush with the third surface 312 of the first battery cell 31 and the fourth surface 322 of the second battery cell 32, and wherein the first insulating component 351 is located close to the edges of a third surface 312 of the first battery cell 31 and a fourth surface 322 of the second battery cell 32 and covers the gap formed by the first surface 311 and the second surface, and wherein the third surface 312 intersects the first surface 311 and the fourth surface 322 intersects the second surface 321.

[0104] Although the present application has been described with reference to the above embodiments, various improvements can be made and components replaced by equivalents without altering the scope of the present application. In particular, the various technical features mentioned in each embodiment can be combined in any way, provided there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions that fall within the scope of the claims. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] CN 202420334454.1

[0001]

Claims

[1] Battery, characterized by that it includes: a first battery cell (31) and a second battery cell (32) which are arranged adjacent to each other, and a functional component (33) which is arranged in a gap formed by a first surface (311) of the first battery cell (31) and a second surface (321) of the second battery cell (32); a filling component (34) and / or a first insulating component (351), wherein the filling component (34) fills the edge of the gap, and wherein the first insulating component (351) is located close to the edges of a third surface (312) of the first battery cell (31) and a fourth surface (322) of the second battery cell (32) and covers the gap formed by the first surface (311) and the second surface (321), and wherein the third surface (312) intersects the first surface (311) and the fourth surface (322) intersects the second surface (321). [2] Battery according to claim 1, characterized by , that the filling component (34) fills the remaining areas within the gap, except for those occupied by the functional component (33). [3] Battery according to claim 1 or 2, characterized by , that a pressure relief mechanism is provided on the third surface (312) of the first battery cell (31) and / or on the fourth surface (322) of the second battery cell (32); wherein the filling component (34) and / or the first insulation component (351) are positioned closer to the pressure relief mechanism relative to the functional component (33). [4] Battery according to any one of claims 1 to 3, characterized by , that the melting point of the filling component (34) and / or the first insulating component (351) is greater than or equal to 100°C. [5] Battery according to any one of claims 1 to 4, characterized by, that the filling component (34) protrudes from the third surface (312) of the first battery cell (31) and / or the fourth surface (322) of the second battery cell (32). [6] Battery according to claim 5, characterized by , that a first electrode connection (310) is provided on the third surface (312) of the first battery cell (31) and / or a second electrode connection (320) is provided on the fourth surface (322) of the second battery cell (32); wherein the filling component (34) is positioned no higher than the first electrode connection (310) and / or the second electrode connection (320). [7] Battery according to claim 6, characterized by that the filling component (34) is arranged flush with the first electrode connection (310) and / or the second electrode connection (320). [8] Battery according to any one of claims 1 to 7, characterized by, that the functional component (33) is arranged in an intermediate region between the first surface (311) and the second surface (321); wherein the filling component (34) comprises a first filling component (341) and a second filling component (342), and wherein the first filling component (341) and the second filling component (342) are arranged in at least one of the two boundary gaps between the first surface (311) and the second surface (321). [9] Battery according to claim 8, characterized by, that the first filling component (341) is arranged flush with the third surface (312) and the fourth surface (322), and / or wherein the second filling component (342) is arranged flush with a fifth surface (313) of the first battery cell (31) and a sixth surface (323) of the second battery cell (32); and wherein the third surface (312) is arranged opposite the fifth surface (313) and the fourth surface (322) opposite the sixth surface (323). [10] Battery according to claim 8 or 9, characterized by, that a pressure relief mechanism is provided on the third surface (312) of the first battery cell (31) and / or on the fourth surface (322) of the second battery cell (32); wherein one of the first filling component (341) and the second filling component (342) is positioned near the pressure relief mechanism, while the other is positioned away from it, and wherein the melting point of the component near the pressure relief mechanism is higher than that of the component farther from it. [11] Battery according to any one of claims 1 to 10, characterized by, that the battery (10) further comprises a second insulating component (352), wherein the second insulating component (352) is located close to the edges of the fifth surface (313) of the first battery cell (31) and the sixth surface (323) of the second battery cell (32) and covers the gap formed by the first surface (311) and the second surface (321), and wherein the fifth surface (313) intersects the first surface (311) and the sixth surface (323) intersects the second surface (321); and wherein the third surface (312) is arranged opposite the fifth surface (313) and the fourth surface (322) opposite the sixth surface (323). [12] Battery according to claim 11, characterized by , that the material of the first insulation component (351) and / or the second insulation component (352) is a thermoplastic resin or a thermoplastic polyester. [13] Battery according to any one of claims 1 to 12, characterized bythat the filling component consists of one of the following materials: rubber, silica gel, silicone, epoxy resin and compressible foam. [14] Battery according to claim 11 or 12, characterized by , that the first insulation component (351) and / or the second insulation component (352) are configured as a plate-like structure or as a projecting T-shaped structure, wherein at least part of the projecting section is inserted into the edge of the gap. [15] Power-consuming device, characterized by , that it comprises a battery according to any one of claims 1 to 14, wherein the battery (10) is configured to supply the power-consuming device with electrical energy.

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