Battery and electric device

Abstract

A battery and an electric device, the battery comprises a box body (10), a connecting piece (30) and at least one battery cell (20), and the at least one battery cell (20) is located in the box body (10); the connecting piece (30) comprises a first connecting part (31) and a second connecting part (32) which are connected with each other, the first connecting part (31) is fixedly connected with at least one battery monomer (20), and the second connecting part (32) is fixedly connected with the box body (10), so that the connecting piece (30) can stably connect the battery monomer (20) and the box body (10) together, the connecting reliability of the battery monomer (20) and the box body (10) is improved, and the service life of the battery monomer (20) and the box body (10) is prolonged. Therefore, the structural strength and rigidity of the battery are improved, and the use reliability and service life of the battery are improved.

Description

Batteries and electrical devices Technical Field

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

[0002] Energy conservation and emission reduction are crucial to the sustainable development of the automotive industry. Against this backdrop, electric vehicles, due to their energy-saving and environmentally friendly characteristics, have become a core component of the industry's sustainable development. However, battery technology is a key factor influencing the development of electric vehicles.

[0003] With advancements in battery technology, various battery performance attributes are continuously being optimized, particularly structural strength, which is crucial to battery performance. If this structural strength cannot be guaranteed, the use of the battery carries significant risks. Therefore, improving the structural strength of batteries remains an unresolved issue.

[0004] The above statements are only used to provide background information related to the present application and do not necessarily constitute prior art.

[0005] Application Contents

[0006] The purpose of the embodiments of the present application is to provide a battery and an electrical device to improve the structural strength of the battery.

[0007] The technical solution adopted in the embodiment of this application is:

[0008] In a first aspect, a battery is provided, which includes a case, a connector and at least one battery cell, wherein the at least one battery cell is located in the case; the connector includes a first connecting portion and a second connecting portion connected to each other, the first connecting portion is fixedly connected to the at least one battery cell, and the second connecting portion is fixedly connected to the case.

[0009] The battery of the embodiment of the present application includes a case, a connector and at least one battery cell, wherein the battery cell is located in the case, wherein the connector includes a first connecting portion and a second connecting portion connected to each other, the first connecting portion is fixedly connected to the battery cell, and the second connecting portion is fixedly connected to the case, so that the connector can stably connect the battery cell and the case together, thereby improving the connection reliability of the battery cell and the case, thereby improving the structural strength and rigidity of the battery, and improving the reliability and service life of the battery.

[0010] In some embodiments, the box body includes a first box body and a second box body, the first box body is configured with a receiving cavity with an opening, the battery cell is located in the receiving cavity, and the second box body covers the opening of the receiving cavity; at least one of the first box body and the second box body is fixedly connected to the second connecting part.

[0011] By adopting the technical solution of this embodiment, the second box body can seal the opening of the accommodating cavity, which can improve the protective effect of the box body on the battery cell, thereby improving the reliability of the battery. In addition, the connection position of the second connecting part and the box body is flexible and diverse, and the processing and manufacturing are simple and convenient.

[0012] In some embodiments, when the first box body is fixedly connected to the second connecting portion, the first box body includes a plurality of side wall portions for connecting to the second box body, and the plurality of side wall portions are connected and enclosed to form a receiving cavity; wherein, at least one side wall portion is fixedly connected to the second connecting portion; wherein, at least one side wall portion is fixedly connected to the second connecting portion.

[0013] By adopting the technical solution of this embodiment, the side wall portion of the second box body has good structural strength, and the second connecting portion is connected to the side wall portion, which can increase the connection strength between the second connecting portion and the box body, thereby improving the structural strength and rigidity of the battery.

[0014] In some embodiments, the second connection portion is bonded to the sidewall portion.

[0015] By adopting the technical solution of this embodiment, the second connecting portion and the side wall portion are connected by bonding, which makes the connection operation simple and helps to improve the production efficiency of the battery.

[0016] In some embodiments, the battery further includes a fastener, the second connecting portion is provided with a first connecting hole, the side wall portion is provided with a second connecting hole, and the fastener is passed through the first connecting hole and the second connecting hole to fix the second connecting portion and the side wall portion together.

[0017] By adopting the technical solution of this embodiment, the second connecting portion and the side wall portion are fixedly connected using fasteners. The connection reliability of the fasteners is good, which is beneficial to improving the structural strength and rigidity of the battery. The connection operation of the fasteners is simple, which can improve the production efficiency of the battery.

[0018] In some embodiments, in a first direction, the fastener does not protrude from the side wall portion toward the end surface of the second box body; wherein the first direction is the direction from the first box body toward the second box body.

[0019] By adopting the technical solution of this embodiment, the fastener does not protrude from the side wall toward the end surface of the second box body, and the fastener is not likely to interfere with the second box body, which is beneficial to improving the structural strength and assembly efficiency of the battery.

[0020] In some embodiments, a receiving notch is configured at the end of the side wall portion facing the second box body, and the second connecting portion is fixed in the receiving notch.

[0021] By adopting the technical solution of this embodiment, the second connecting portion is accommodated in the accommodating notch, which can reduce the risk of interference between the second connecting portion and the second box body, thereby improving the structural strength and assembly efficiency of the battery.

[0022] In some embodiments, in the first direction, the second connection portion does not protrude from the side wall portion toward the end surface of the second box body; wherein the first direction is the direction from the first box body toward the second box body.

[0023] By adopting the technical solution of this embodiment, the second connecting portion is completely accommodated in the accommodating notch, so that the second connecting portion is not likely to interfere with the second box body, which is beneficial to improving the structural strength and assembly efficiency of the battery.

[0024] In some embodiments, second connecting portions are connected to opposite sides of the first connecting portion, and the two second connecting portions are respectively fixedly connected to two oppositely arranged sidewall portions.

[0025] By adopting the technical solution of this embodiment, the two second connecting parts are respectively connected to the two side wall parts, the connection reliability between the connecting piece and the box body is good, and the structural strength and rigidity of the battery can be better improved.

[0026] In some embodiments, a connector is provided on a side of the battery cell facing the second box and / or a side facing away from the second box.

[0027] By adopting the technical solution of this embodiment, the position setting of the connecting piece can be flexibly set to meet different usage requirements.

[0028] In some embodiments, the side wall portion connected to the second connecting portion is provided with a mounting structure for mounting a battery.

[0029] By adopting the technical solution of this embodiment, the side wall portion provided with the mounting structure has good structural strength, and the second connecting portion is connected to the side wall portion, which can increase the connection strength between the second connecting portion and the box body, thereby improving the structural strength and rigidity of the battery.

[0030] In some embodiments, the battery cell has a first surface provided with an electrode terminal; the first surface is connected to the first connection portion; or the battery cell has a second surface adjacent to the first surface, the second surface is connected to the first connection portion.

[0031] By adopting the technical solution of this embodiment, the connection position of the first connecting portion and the battery cell can be flexibly set to meet the use requirements of different types of batteries.

[0032] In some embodiments, when the first surface is connected to the first connection portion, the first surface is bonded to the first connection portion; when the second surface is connected to the first connection portion, the second surface is bonded to the first connection portion.

[0033] By adopting the technical solution of this embodiment, the battery cell and the first connecting portion are bonded by an adhesive to achieve a fixed connection between the first connecting portion and the battery cell. The fixed connection method is simple and can improve the production efficiency of the battery.

[0034] In some embodiments, the number of battery cells is multiple, and the multiple battery cells are arranged in a matrix along the second direction and the third direction, and the second direction is perpendicular to the third direction; the first connecting portion includes a first connecting sub-portion extending along the second direction and a second connecting sub-portion extending along the third direction, the first connecting sub-portion is fixedly connected to the multiple battery cells arranged along the second direction, and the second connecting sub-portion is fixedly connected to the multiple battery cells arranged along the third direction; at least one of the first connecting sub-portion and the second connecting sub-portion is connected to the second connecting portion.

[0035] By adopting the technical solution of this embodiment, the first connecting sub-part can fixedly connect multiple battery cells arranged along the second direction, and the second connecting sub-part can fixedly connect multiple battery cells arranged along the third direction, thereby realizing fixed connection of multiple battery cells in the second direction and the third direction. Multiple battery cells form a whole, which can improve the overall rigidity of the battery cells after grouping, thereby improving the overall rigidity of the battery, effectively improving the mode of the battery, so that the battery can avoid the resonant frequency of the entire vehicle, and improving the mechanical strength and service life of the battery; in addition, multiple battery cells are restricted by the first connecting sub-part and the second connecting sub-part, which can also improve the ability of the battery cells to resist expansion and deformation, which is beneficial to improving the performance of the battery.

[0036] In some embodiments, the first connecting sub-portion is fixedly connected to two adjacent battery cells arranged along the third direction; and / or the second connecting sub-portion is fixedly connected to two adjacent battery cells arranged along the second direction.

[0037] By adopting the technical solution of this embodiment, the first connecting sub-section can fix two adjacent groups of multiple battery cells arranged along the second direction, which can improve the connection reliability of the two adjacent groups of multiple battery cells arranged along the second direction, thereby improving the structural strength and rigidity of the battery; a second connecting sub-section can fix two adjacent groups of multiple battery cells arranged along the third direction, which can improve the connection reliability of the two adjacent groups of multiple battery cells arranged along the third direction, thereby improving the structural strength and rigidity of the battery; it can also simplify the structure of the connecting part, reduce the manufacturing cost of the connecting part, and also help improve the production efficiency of the battery; in addition, it can also simplify the structure of the connecting part, reduce the manufacturing cost of the connecting part, which is also conducive to improving the production efficiency of the battery.

[0038] In some embodiments, the first connecting sub-section and the second connecting sub-section are surrounded to form a receiving area; the first connecting sub-section also includes a third connecting sub-section, the third connecting sub-section connects the first connecting sub-section and the second connecting sub-section, and the third connecting sub-section is located in the receiving area.

[0039] By adopting the technical solution of this embodiment, the third connecting sub-part can improve the connection reliability between the first connecting sub-part and the second connecting sub-part, thereby improving the structural strength of the connecting member, and further improving the structural strength and rigidity of the battery.

[0040] In some embodiments, the battery cell has an electrode terminal, and the third connecting sub-part is provided with an avoidance hole for avoiding the electrode terminal; the third connecting sub-part is connected to a first blocking part, the first blocking part protrudes from the surface of the third connecting sub-part toward the battery cell, and the first blocking part is arranged around the avoidance hole; and / or, the battery cell has a pressure relief mechanism, the third connecting sub-part is provided with a discharge structure, and the discharge structure is arranged opposite to the pressure relief mechanism to release the emissions discharged through the pressure relief mechanism; the third connecting sub-part is connected to a second blocking part, the second blocking part protrudes from the surface of the third connecting sub-part toward the battery cell, and the second blocking part is arranged around the discharge structure.

[0041] By adopting the technical solution of this embodiment, the setting of the first blocking portion can prevent the adhesive or solid particles from contacting the electrode terminal, which is beneficial to improving the reliability of the electrical connection between the electrode terminal and the busbar component, thereby improving the reliability of the battery; the setting of the second blocking portion can prevent the adhesive or solid particles from contacting the pressure relief mechanism and the discharge structure, which is beneficial to improving the smoothness of the discharge of emissions, thereby improving the reliability of the battery.

[0042] In some embodiments, a first gap is formed between two adjacent battery cells arranged along a third direction; the first connecting sub-portion is provided with a third blocking portion, the third blocking portion protrudes from the surface of the first connecting sub-portion toward the battery cell, and the third blocking portion is used to block adhesive or solid particles from entering the first gap; and / or, a second gap is formed between two adjacent battery cells arranged along a second direction; the second connecting sub-portion is provided with a fourth blocking portion, the fourth blocking portion protrudes from the surface of the second connecting sub-portion toward the battery cell, and the fourth blocking portion is used to block adhesive or solid particles from entering the second gap.

[0043] By adopting the technical solution of this embodiment, the provision of the third blocking portion and / or the fourth blocking portion can reduce the risk of adhesive or solid particles entering the gap between two adjacent battery cells, reduce the risk of damage to the battery cells, and help improve the reliability and service life of the battery.

[0044] In some embodiments, the connector is an insulating member, and the battery further includes a busbar component for electrically connecting to the electrode terminals of the battery cells; the first connecting portion of the insulating member is provided between the busbar component and the battery cells.

[0045] By adopting the technical solution of this embodiment, the first connecting portion of the insulating member is arranged between the busbar component and the battery cell, so that the first connecting portion and the battery cell are insulated, the short circuit risk of the battery cell is reduced, and the reliability of the battery is improved; in addition, the insulating member located between the busbar component and the battery cell in the battery can also be directly used as a connecting member, without the need for additional connecting members, which is conducive to improving the compactness of the battery structure and reducing the production cost of the battery.

[0046] In some embodiments, the connecting member is a heat exchange member, which is used to exchange heat with the battery cell.

[0047] By adopting the technical solution of this embodiment, the heat exchanger can realize temperature control of the battery cell, so that the battery can exert better charging and discharging performance; in addition, the heat exchanger in the battery can also be directly used as a connector without the need for additional connectors, which is conducive to improving the compactness of the battery structure and reducing the production cost of the battery.

[0048] In some embodiments, the battery also includes a busbar component for electrically connecting to the battery cell; the first connecting portion of the heat exchanger is arranged between the busbar component and the battery cell; wherein, at least one of the surface of the first connecting portion of the heat exchanger facing the busbar component and the surface facing away from the busbar component is covered with an insulating layer.

[0049] By adopting the technical solution of this embodiment, at least one of the surfaces of the first connecting portion of the heat exchanger facing the convergence component and the surface facing away from the convergence component is covered with an insulating layer, which can achieve insulation from the battery cell and / or the convergence component. At the same time, the heat exchanger can also achieve heat exchange of the battery cell and connection between the battery cell and the box body. In this way, a heat exchanger can achieve three functions, which can reduce the number of battery components, improve the structural compactness, enhance the performance of the battery and reduce the production cost of the battery.

[0050] In some embodiments, the battery further includes a sampling component for sampling information of the battery cells, and the sampling component is connected to the connector.

[0051] By adopting the technical solution of this embodiment, the sampling assembly is connected to the connecting piece, so that the sampling assembly and the connecting piece are integrated together, which can improve the integration of the battery and thus improve the performance of the battery.

[0052] In a second aspect, an electrical device is provided, comprising the battery as described in the above embodiment.

[0053] The electrical device of the embodiment of the present application adopts the above-mentioned battery, and the battery has good structural strength and rigidity, which is conducive to improving the performance of the electrical device.

[0054] In some embodiments, the electrical device is a vehicle, and the surface of the battery cell with the largest area is arranged facing a door of the vehicle.

[0055] By adopting the technical solution of this embodiment, the surface of the battery cell with the largest area is arranged to face the vehicle door, so that when the vehicle is hit by a side pole or squeezed from the side, the deformation is borne by the surface with the largest area. Since the surface with the largest area of ​​the battery cell allows a much larger amount of intrusion than other surfaces of the battery cell, the risk of short circuit after the battery cell is squeezed and deformed will be relatively low, which can greatly improve the safety of the battery in side pole collision and side squeezing conditions.

[0056] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] 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.

[0058] FIG1 is a schematic structural diagram of a vehicle provided in some embodiments of the present application.

[0059] FIG2 is a schematic diagram of the exploded structure of a battery provided in some embodiments of the present application.

[0060] FIG3 is a schematic structural diagram of the battery shown in FIG2 after being hidden in the second box.

[0061] FIG4 is a cross-sectional view taken along line AA in FIG3 .

[0062] FIG5 is a partial enlarged view of point B in FIG4 .

[0063] FIG6 is a partial enlarged view of a battery provided in some other embodiments of the present application at point B in FIG4 .

[0064] FIG7 is a partial enlarged view of a battery provided in some other embodiments of the present application at point B in FIG4 .

[0065] FIG8 is a partial enlarged view of a battery provided in some other embodiments of the present application at point B in FIG4 .

[0066] FIG9 is a schematic structural diagram of a battery cell provided in some embodiments of the present application.

[0067] FIG10 is a schematic structural diagram of a battery cell provided in some other embodiments of the present application.

[0068] FIG11 is a schematic structural diagram of the battery hidden in the second box provided in other embodiments of the present application.

[0069] FIG12 is a schematic diagram of the exploded structure of the battery hidden in the box shown in FIG11 .

[0070] FIG13 is a schematic structural diagram of the connecting member shown in FIG12 .

[0071] FIG14 is a schematic diagram of the exploded structure of the battery hidden behind the box provided in some other embodiments of the present application.

[0072] FIG. 15 is a schematic structural diagram of the connecting member shown in FIG. 14 from one perspective.

[0073] FIG. 16 is a schematic structural diagram of the connecting member shown in FIG. 14 from another perspective.

[0074] FIG17 is a partial enlarged view of point C in FIG16 .

[0075] Among them, the reference numerals in the figures are:

[0076] 1000, vehicle; 1100, battery; 1200, controller; 1300, motor; 10, housing; 11, first housing; 111, sidewall; 1111, second connection hole; 1112, receiving notch; 1113, mounting structure; 112, bottom plate; 113, receiving cavity; 12, second housing; 20, battery cell; 21, first surface; 22, second surface; 23, electrode terminal; 24, pressure relief mechanism; 26, first side surface; 27, second side surface; 28, third side surface; 201, first gap; 202, second gap; 30, connector; 301, insulating member; 302, heat exchange member; 3 1. First connecting part; 311. First connecting sub-part; 3111. Third blocking part; 3112. First blocking sub-part; 312. Second connecting sub-part; 3121. Fourth blocking part; 3122. Second blocking sub-part; 313. Third connecting sub-part; 3131. Avoidance hole; 3132. Discharge structure; 31321. Discharge hole; 3133. Reinforcing rib; 3134. First blocking part; 3135. Second blocking part; 314. Receiving area; 32. Second connecting part; 321. First connecting hole; 40. Fastener; 41. Rivet; 42. Bolt; 51. Converging component; 52. Sampling assembly; 53. Adhesive. DETAILED DESCRIPTION

[0077] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0078] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0079] In the description of the embodiments of this application, the technical terms "first," "second," etc., are used solely to distinguish between different objects and should not be understood to indicate or imply relative importance, or to implicitly specify the quantity, specific order, or primary-secondary relationship of the technical features indicated. Therefore, a feature designated "first" or "second" may explicitly or implicitly include one or more of such features.

[0080] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least some embodiments of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments in any suitable manner.

[0081] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0082] In the description of the embodiments of this application, the term "plurality" refers to two or more (including two). Similarly, "multiple groups" refers to two or more (including two groups), and "multiple sheets" refers to two or more (including two sheets). "Several" means one or more, unless otherwise specifically defined.

[0083] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application.

[0084] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," 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; and 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.

[0085] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, when an element is referred to as being “fixed to” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0086] In this application, battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, lithium metal batteries, or magnesium-ion batteries, etc., and the embodiments of this application do not limit this. Battery cells may be cylindrical, flat, rectangular, or other shapes, etc., and the embodiments of this application do not limit this. Battery cells are generally divided into three types based on the packaging method: cylindrical battery cells, prismatic battery cells, and soft-pack battery cells, and the embodiments of this application do not limit this.

[0087] The battery referred to in the embodiments of this application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in this application may include a battery module or a battery pack. A battery generally includes a casing that encloses one or more battery cells. The casing prevents liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0088] A battery cell includes an electrode assembly and electrolyte. The electrode assembly consists of a positive electrode sheet, a negative electrode sheet, and a separator. The battery cell primarily operates by the movement of metal ions between the positive and negative electrode sheets. The positive electrode sheet includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector. The uncoated positive current collector protrudes from the coated positive current collector, serving as the positive tab.

[0089] Taking lithium-ion batteries as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode plate includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The negative electrode current collector not coated with the negative electrode active material layer protrudes from the negative electrode current collector coated with the negative electrode active material layer. The negative electrode current collector not coated with the negative electrode active material layer serves as the negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon, silicon, lithium metal or lithium alloy, etc. In order to ensure that a large current passes without melting, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together. The material of the isolation membrane can be polypropylene (PP) or polyethylene (PE), etc. In addition, the electrode assembly in the embodiment of the present application includes but is not limited to a wound structure or a laminated structure.

[0090] The battery cell in the embodiment of the present application further includes a housing, and the electrode assembly is installed in the housing to protect the electrode assembly.

[0091] The outer shell refers to the housing structure with a space inside to accommodate and protect the electrode assembly. The outer shell can be made of a material with a certain degree of hardness and strength. This prevents deformation during compression and collision, giving the battery cells greater structural strength and improved reliability. The outer shell can be made of a variety of materials, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, and plastic.

[0092] The outer casing of a battery cell is equipped with electrode terminals. Electrode terminals are conductive components attached to the outer casing. They connect to the tabs of the electrode assembly to output power from the battery cell or charge the battery cell. A battery cell generally has two electrode terminals, one connected to the positive and negative tabs of the electrode assembly. The electrode terminal connected to the positive tab is the positive electrode terminal, and the electrode terminal connected to the negative tab is the negative electrode terminal. The electrode assembly and electrode terminals are connected to form a battery cell.

[0093] When a battery cell is charged, the current converts electrical energy into chemical energy through chemical reactions between the electrolyte and electrodes, which is stored in the cell. During discharge, the chemical energy is converted back into electrical energy and released. This energy conversion process is accompanied by energy loss and heat generation. If the heat cannot be effectively dissipated due to poor heat dissipation within the battery cell, the cell can overheat. Battery cells have a certain internal resistance, and when current flows through this resistance, it generates resistance losses, causing internal heat generation. When the current is too high or the internal resistance is too high, the internal heat generation intensifies, leading to overheating. If a battery cell exceeds its maximum design voltage during charging, or if the voltage drops too low during discharge, the cell can overvoltage or overdischarge. Overcharging or overdischarging can trigger runaway chemical reactions within the cell, generating excessive heat and causing overheating. Furthermore, defects in the battery cell design or manufacturing process, such as improper material selection or poor cell assembly, can lead to poor internal heat dissipation or uneven current distribution, increasing the risk of overheating or overvoltage. Therefore, the battery cells may overheat or overvoltage during charging or use.

[0094] Battery cells typically contain a certain amount of gas. When a battery cell is charged or discharged, the electrolyte solution undergoes gas generation or absorption reactions. The generation of these gases causes the gas pressure inside the battery cell to increase, causing the battery cell to swell and deform. During the charging or discharging process, the positive and negative electrode materials undergo chemical reactions to form new compounds. These chemical reactions are accompanied by volume changes, which cause the volume of the materials inside the battery cell to change, causing the battery to swell and deform. When a battery cell is overcharged or over-discharged, the chemical reactions inside the battery cell can become uncontrolled, generating excessive gas or causing structural damage to the electrode materials, which in turn causes the battery cell to swell and deform. Charging or discharging a battery cell in a high-temperature environment accelerates the internal chemical reactions, increasing gas generation and volume changes. High temperatures also cause the materials inside the battery cell to expand, also causing the battery cell to swell and deform.

[0095] To reduce the risk of explosion or fire caused by overheating or overpressure during charging or use, battery cell casings are often equipped with pressure relief mechanisms such as explosion-proof valves and explosion-proof discs. These release internal gas or liquid when the temperature or pressure of a battery cell exceeds a safety threshold, thereby reducing the pressure inside the cell and lowering the risk of explosion. This improves the safety of the battery cell and reduces potential safety risks.

[0096] Currently, market developments indicate that batteries are increasingly being used. They 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 like electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. As battery applications continue to expand, market demand is also growing.

[0097] With advancements in battery technology, various battery performance attributes are continuously being optimized, particularly structural strength, which is crucial to battery performance. If this structural strength cannot be guaranteed, the use of the battery carries significant risks. Therefore, improving the structural strength of batteries remains an unresolved issue.

[0098] Based on this, an embodiment of the present application provides a battery, which includes a case, a connector and at least one battery cell, wherein the battery cell is located in the case, wherein the connector includes a first connecting part and a second connecting part connected to each other, the first connecting part is fixedly connected to the battery cell, and the second connecting part is fixedly connected to the case, so that the connector can stably connect the battery cell and the case together, thereby improving the connection reliability of the battery cell and the case, thereby improving the structural strength and rigidity of the battery, and improving the reliability and service life of the battery.

[0099] The technical solutions described in the embodiments of the present application are applicable to batteries and electrical devices using batteries.

[0100] Electrical devices may be vehicles, mobile phones, portable devices, laptop computers, ships, spacecraft, electric toys, electric tools, and the like. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, and the like; electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, and the like. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices. Batteries may also be energy storage devices. Energy storage devices include energy storage containers, energy storage cabinets, and the like.

[0101] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device.

[0102] Please refer to Figure 1, which is a schematic structural diagram of a vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 1100 is provided inside the vehicle 1000, and the battery 1100 can be provided at the bottom, head or tail of the vehicle 1000. The battery 1100 can be used to power the vehicle 1000. For example, the battery 1100 can serve as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 1200 and a motor 1300. The controller 1200 is used to control the battery 1100 to power the motor 1300, for example, for starting, navigating and driving the vehicle 1000.

[0103] In some embodiments of the present application, the battery 1100 can serve not only as an operating power source for the vehicle 1000, but also as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0104] In order to meet different power requirements, the battery 1100 may include a plurality of battery cells 20, wherein the plurality of battery cells 20 may be connected in series, in parallel, or in a hybrid connection, where the hybrid connection refers to a mixture of series and parallel connections. The battery 1100 may also be referred to as a battery pack. Optionally, the plurality of battery cells 20 may first be connected in series, in parallel, or in a hybrid connection to form a battery module, and the plurality of battery modules may then be connected in series, in parallel, or in a hybrid connection to form the battery 1100. In other words, the plurality of battery cells 20 may directly form the battery 1100, or they may first form a battery module, which may then form the battery 1100.

[0105] Refer to Figure 2, which is a schematic diagram of the exploded structure of a battery 1100 provided in some embodiments of the present application. Battery 1100 has a height direction, a length direction, and a width direction. The height direction of battery 1100 can be referred to as the first direction Z in the figure, the width direction of battery 1100 can be referred to as the second direction X in the figure, and the length direction of battery 1100 can be referred to as the third direction Y in the figure. The housing 10 defines the external structure of battery 1100. The height direction of housing 10 can be the height direction of battery 1100, the length direction of housing 10 can be the length direction of battery 1100, and the width direction of housing 10 can be the width direction of battery 1100.

[0106] The battery 1100 of some embodiments of the present application includes a case 10, a connector 30 and at least one battery cell 20, and the at least one battery cell 20 is located in the case 10; the connector 30 includes a first connecting portion 31 and a second connecting portion 32 that are connected to each other, the first connecting portion 31 is fixedly connected to the at least one battery cell 20, and the second connecting portion 32 is fixedly connected to the case 10.

[0107] The box body 10 may refer to a component that provides an installation environment for the battery cells 20 . The interior of the box body 10 is a hollow structure, and the battery cells 20 are accommodated in the box body 10 .

[0108] The connector 30 may refer to a component used to connect the battery cell 20 and the housing 10. The connector 30 includes a first connecting portion 31 and a second connecting portion 32. The first connecting portion 31 may refer to the portion of the connector 30 that is fixedly connected to the battery cell 20, and the second connecting portion 32 may refer to the portion of the connector 30 that is fixedly connected to the housing 10. The first connecting portion 31 and the second connecting portion 32 may be arranged on the same plane. In some embodiments, the first connecting portion 31 and the second connecting portion 32 may be a single unitary body, i.e., an integrally molded structure; alternatively, the first connecting portion 31 and the second connecting portion 32 may be two separate parts connected to each other by a connection structure such as screwing, clamping, or bonding.

[0109] When there are multiple battery cells 20, a portion of the battery cells 20 may be connected to the first connecting portion 31, or all of the battery cells 20 may be connected to the first connecting portion 31. The connection between the battery cells 20 and the first connecting portion 31 may be a fixed connection method such as screwing, clamping, or bonding; and the connection between the second connecting portion 32 and the housing 10 may also be a fixed connection method such as screwing, clamping, or bonding.

[0110] The battery 1100 of the embodiment of the present application includes a case 10, a connector 30 and at least one battery cell 20, wherein the battery cell 20 is located in the case 10, wherein the connector 30 includes a first connecting portion 31 and a second connecting portion 32 connected to each other, the first connecting portion 31 is fixedly connected to the battery cell 20, and the second connecting portion 32 is fixedly connected to the case 10, so that the connector 30 can stably connect the battery cell 20 and the case 10 together, thereby improving the connection reliability of the battery cell 20 and the case 10, thereby improving the structural strength and rigidity of the battery 1100, and improving the reliability and service life of the battery 1100.

[0111] In some embodiments, the box body 10 includes a first box body 11 and a second box body 12, the first box body 11 is configured with a receiving cavity 113 with an opening, the battery cell 20 is located in the receiving cavity 113, and the second box body 12 covers the opening of the receiving cavity 113; at least one of the first box body 11 and the second box body 12 is fixedly connected to the second connecting portion 32.

[0112] The housing 10 may include two parts, one of which is a first housing 11 and the other is a second housing 12. The first housing 11 forms a receiving cavity 113 with an opening for accommodating the battery cells 20. The second housing 12 covers the opening of the receiving cavity 113 to seal the opening of the receiving cavity 113. The shapes of the first and second housings 11, 12 may be determined based on the shape and arrangement of the battery cells 20 within the housing 10. In some embodiments, the first and second housings 11, 12 may each be a hollow rectangular parallelepiped with an opening, with the opening of the first and second housings 11, 12 interlocking to seal the opening of the receiving cavity 113. In some embodiments, the second housing 12 is plate-shaped and covers the opening of the first housing 11, thereby sealing the opening of the receiving cavity 113.

[0113] At least one of the first box body 11 and the second box body 12 is fixedly connected to the second connecting portion 32. It can be understood that the first box body 11 is fixedly connected to the second connecting portion 32, or the first box body 11 is fixedly connected to the second connecting portion 32; or the second connecting portion 32 is fixedly connected to the first box body 11 and the second box body 12 at the same time.

[0114] By adopting the technical solution of this embodiment, the second box body 12 can close the opening of the accommodating cavity 113, which can improve the protective effect of the box body 10 on the battery cell 20, thereby improving the reliability of the battery 1100; in addition, the connection position of the second connecting part 32 and the box body 10 is flexible and diverse, and the processing and manufacturing are simple and convenient.

[0115] Please refer to Figures 3 to 5. Figure 3 is a schematic structural diagram of the battery 1100 shown in Figure 2 after the second housing 12 is hidden. Figure 4 is a cross-sectional view along line AA in Figure 3. Figure 5 is a partial enlarged view of point B in Figure 4.

[0116] In some embodiments, when the first box body 11 is fixedly connected to the second connecting portion 32, the first box body 11 includes a plurality of side wall portions 111 for connecting to the second box body 12, and the plurality of side wall portions 111 are connected and enclosed to form a receiving cavity 113; wherein, at least one side wall portion 111 is fixedly connected to the second connecting portion 32.

[0117] The side wall portion 111 may refer to the portion of the first housing 11 that is connected to the second housing 12. The first housing 11 includes a plurality of side wall portions 111, which are sequentially connected to form the side portion of the first housing 11, and each side wall portion 111 forms a side wall of the receiving chamber 113 of the first housing 11. The plurality of side wall portions 111 may be sequentially connected end to end to form a closed frame structure. The hollow chamber formed by the frame structure serves as the receiving chamber 113, and the second housing 12 is provided on one side of the opening cover of the hollow chamber, and the bottom plate 112 is provided on the other side of the opening cover to form a closed receiving chamber 113. The shape of the frame structure may be adapted to the shape and arrangement of the battery cells 20. The side wall portion 111 may be an internal hollow structure, a plate-like structure, or a solid structure. When the second box body 12 is a sheet metal box body, the side wall portion 111 may be a side plate structure of the second box body 12 ; when the second box body 12 is a frame-type box body, the side wall portion 111 may be a side beam of the second box body 12 .

[0118] At least one side wall portion 111 is fixedly connected to the second connection portion 32 . It is understandable that the second connection portion 32 can be fixedly connected to multiple side wall portions 111 at the same time, or can be fixedly connected to one side wall portion 111 .

[0119] The side wall portion 111 of the second box body 12 has good structural strength. The second connecting portion 32 is connected to the side wall portion 111 , which can increase the connection strength between the second connecting portion 32 and the box body 10 , thereby improving the structural strength and rigidity of the battery 1100 .

[0120] In some embodiments, the second connection portion 32 is bonded to the sidewall portion 111 .

[0121] It is understood that the second connecting portion 32 and the sidewall portion 111 are bonded together using an adhesive 53. The adhesive 53 may be a structural adhesive, which is a type of adhesive with high strength, weather resistance, and aging resistance, primarily used to secure and connect various materials to enhance structural stability and integrity. The adhesive 53 may be, but is not limited to, epoxy resin adhesive, silicone rubber, polyurethane adhesive, acrylate adhesive, or polyvinyl acetal adhesive.

[0122] The second connection portion 32 and the side wall portion 111 are connected by bonding, which is simple to operate and helps to improve the production efficiency of the battery 1100 .

[0123] Please refer to Figures 6 to 8. Figure 6 is a partial enlarged view of a battery 1100 provided in some other embodiments of the present application at point B in Figure 4. Figure 7 is a partial enlarged view of a battery 1100 provided in some other embodiments of the present application at point B in Figure 4. Figure 8 is a partial enlarged view of a battery 1100 provided in some other embodiments of the present application at point B in Figure 4.

[0124] In some embodiments, the battery 1100 also includes a fastener 40, the second connecting portion 32 is provided with a first connecting hole 321, and the side wall portion 111 is provided with a second connecting hole 1111, and the fastener 40 is passed through the first connecting hole 321 and the second connecting hole 1111 to fix the second connecting portion 32 and the side wall portion 111 together.

[0125] The fastener 40 may refer to a type of component used to fasten two or more components, and the fastener 40 can prevent relative movement between the two components or ensure that the components are in a specific position. The fastener 40 may be, but is not limited to, a bolt, a screw, a rivet, etc.

[0126] The first connection hole 321 may refer to a through hole provided in the second connection portion 32 for the fastener 40 to pass through, and the second connection hole 1111 may refer to a through hole provided in the side wall portion 111 for the fastener 40 to pass through. After the fastener 40 passes through the first connection hole 321 and the second connection hole 1111, the second connection portion 32 and the side wall portion 111 are fixedly connected. The number of fasteners 40 may be one or more. If there are multiple fasteners 40, the multiple fasteners 40 may be distributed along the length of the side wall portion 111 to improve the connection reliability between the second connection portion 32 and the side wall portion 111.

[0127] The second connection portion 32 and the side wall portion 111 are fixedly connected by a fastener 40 . The fastener 40 has good connection reliability, which is beneficial to improving the structural strength and rigidity of the battery 1100 . The connection operation of the fastener 40 is simple, which can improve the production efficiency of the battery 1100 .

[0128] In some embodiments, the fastener 40 is a rivet 41 , which passes through the first connection hole 321 and the second connection hole 1111 , thereby fixing the second connection portion 32 and the sidewall portion 111 .

[0129] In some embodiments, the fastener 40 is a bolt 42, which passes through the first connection hole 321 and the second connection hole 1111, thereby fixing the second connection portion 32 and the sidewall portion 111. In some embodiments, the bolt 42 can be a rivet bolt.

[0130] In some embodiments, the fastener 40 is a rivet 41, which passes through the first connection hole 321 and the second connection hole 1111, and the adhesive 53 is filled between the rivet cap of the rivet 41 and the second connection part 32 to improve the reliability of the fixed connection between the second connection part 32 and the side wall part 111, thereby improving the structural strength of the battery 1100.

[0131] In some embodiments, in the first direction Z, the fastener 40 does not protrude from the side wall portion 111 toward the end surface of the second box body 12 ; wherein the first direction Z is the direction from the first box body 11 toward the second box body 12 .

[0132] It can be understood that the end surface of the fastener 40 facing the second box body 12 is flush with the end surface of the side wall portion 111 facing the second box body 12; or, the end surface of the fastener 40 facing the second box body 12 is lower than the end surface of the side wall portion 111 facing the second box body 12.

[0133] The fastener 40 does not protrude beyond the side wall portion 111 toward the end surface of the second box body 12 , and the fastener 40 is unlikely to interfere with the second box body 12 , which is beneficial to improving the structural strength and assembly efficiency of the battery 1100 .

[0134] In some embodiments, a receiving notch 1112 is configured at the end of the side wall portion 111 facing the second box body 12 , and the second connecting portion 32 is fixed in the receiving notch 1112 .

[0135] The receiving gap 1112 may refer to a gap structure formed on the side wall portion 111 for receiving the second connecting portion 32; the surface of the side wall portion 111 facing the second box body 12 is recessed toward the second box body 12 to form the receiving gap 1112, and the receiving gap 1112 is connected to the receiving cavity 113 to facilitate receiving the second connecting portion 32.

[0136] The second connection portion 32 is received in the receiving notch 1112 , which can reduce the risk of interference between the second connection portion 32 and the second box body 12 , thereby improving the structural strength and assembly efficiency of the battery 1100 .

[0137] In some embodiments, in the first direction Z, the second connection portion 32 does not protrude beyond the end surface of the sidewall portion 111 toward the second box body 12 ; wherein the first direction Z is the direction from the first box body 11 toward the second box body 12 .

[0138] It can be understood that the second connecting portion 32 is completely received in the receiving notch 1112 and does not protrude outside the receiving notch 1112; the end surface of the second connecting portion 32 facing the second box body 12 is flush with the end surface of the side wall portion 111 facing the second box body 12; or, the end surface of the second connecting portion 32 facing the second box body 12 is lower than the end surface of the side wall portion 111 facing the second box body 12.

[0139] The second connecting portion 32 is completely received in the receiving notch 1112 , so that the second connecting portion 32 is unlikely to interfere with the second box 12 , thereby improving the structural strength and assembly efficiency of the battery 1100 .

[0140] In some embodiments, the second connection portion 32 is supported on the wall of the receiving notch 1112 facing the second box body 12 , and the second connection portion 32 is also bonded to the wall of the receiving notch 1112 facing the second box body 12 via adhesive 53 .

[0141] In some embodiments, a second connection hole 1111 is opened on the wall of the receiving notch 1112 facing the second box body 12, and the fastener 40 passes through the first connection hole 321 and the second connection hole 1111 in sequence, thereby fixing the second connection portion 32 on the side wall portion 111, and the end of the fastener 40 facing the second box body 12 is also received in the receiving notch 1112 and does not protrude from the end surface of the side wall portion 111 facing the second box body 12.

[0142] In some embodiments, the second connecting portions 32 are connected to two opposite sides of the first connecting portion 31 , and the two second connecting portions 32 are respectively fixedly connected to two oppositely disposed sidewall portions 111 .

[0143] It can be understood that there are two second connection parts 32 , and the two second connection parts 32 are respectively connected to the two opposite sides of the first connection part 31 , and the two second connection parts 32 are respectively fixedly connected to the corresponding side wall parts 111 .

[0144] As an example, there are four sidewalls 111, two of which extend along the length of the battery 1100 and are spaced apart along the width of the battery 1100. The other two sidewalls 111 extend along the width of the battery 1100 and along the length of the battery 1100. The four sidewalls 111 are arranged to form a rectangular frame structure. There are two second connecting portions 32, each located on opposite sides of the first connecting portion 31 along the second direction X. The two sidewalls 111 spaced apart along the second direction X are fixedly connected to the two second connecting portions 32, respectively. Of course, in other embodiments, the second connecting portions 32 can also be fixedly connected to the sidewalls 111 in a one-to-one correspondence.

[0145] The two second connecting portions 32 are respectively connected to the two side wall portions 111 . The connection reliability between the connecting member 30 and the box body 10 is good, which can better improve the structural strength and rigidity of the battery 1100 .

[0146] In some embodiments, the side wall portion 111 connected to the second connection portion 32 is provided with a mounting structure 1113 for mounting the battery 1100 .

[0147] It can be understood that the side wall portion 111 provided with a mounting structure 1113 is connected to the second connecting portion 32. The mounting structure 1113 may refer to the portion of the battery 1100 used to fix to the vehicle 1000. The structure may refer to a mounting beam provided on the side wall portion 111. The mounting beam may be an integrally formed structure with the side wall portion 111, or may be a separately formed structure. The mounting beam is connected to the side wall portion 111 through a connecting structure.

[0148] By adopting the technical solution of this embodiment, the side wall portion 111 provided with the mounting structure 1113 has good structural strength, and the second connecting portion 32 is connected to the side wall portion 111, which can increase the connection strength between the second connecting portion 32 and the box body 10, thereby improving the structural strength and rigidity of the battery 1100.

[0149] In some embodiments, a connector 30 is provided on a side of the battery cell 20 facing the second box body 12 and / or a side facing away from the second box body 12 .

[0150] It can be understood that a connector 30 is provided on the side of the battery cell 20 facing the second box body 12, and the connector 30 is located between the second box body 12 and the battery cell 20; or, a connector 30 is provided on the side of the battery cell 20 facing away from the second box body 12, and the battery cell 20 is located between the second box body 12 and the connector 30; or, a connector 30 is provided on both the side of the battery cell 20 facing the second box body 12 and the side facing away from the second box body 12, and connectors 30 are provided on opposite sides of the battery cell 20, and the battery cell 20 is located between the two connectors 30, the connection reliability between the battery cell 20 and the box body 10 is better, and the structural strength of the battery 1100 is better.

[0151] In some embodiments, when the second box body 12 is located above the first box body 11 , the connector 30 may be located above or below the battery cell 20 ; or, connectors 30 may be provided on both the upper and lower sides of the battery cell 20 .

[0152] The position of the connecting member 30 can be flexibly arranged to meet different usage requirements.

[0153] Please refer to Figures 9 and 10 , where Figure 9 is a schematic diagram of the structure of a battery cell 20 provided in some embodiments of the present application, and Figure 10 is a schematic diagram of the structure of a battery cell 20 provided in other embodiments of the present application.

[0154] For ease of understanding and description, the embodiments provided in this application are described only with respect to a rectangular battery cell 20. It should be understood that the embodiments provided in this application are also applicable to cylindrical battery cells or soft-pack battery cells, and the embodiments of this application are not limited thereto.

[0155] The battery cell 20 has a height direction, a length direction and a width direction. The height direction of the battery cell 20 can be parallel to the first direction Z, the width direction of the battery cell 20 can be parallel to the second direction X, and the length direction of the battery cell 20 can be parallel to the third direction Y. The battery cells 20 are arranged in this way in the box 10, which can better utilize the internal space of the box 10 and facilitate the installation of other components. Of course, in other embodiments, the battery cells 20 can also adopt other layout methods.

[0156] As shown in Figures 9 and 10 , a battery cell 20 includes two first side surfaces 26 extending along its height, with the distance between the two first side surfaces 26 defining the height of the battery cell 20. The battery cell 20 also includes two second side surfaces 27 extending along its length, defining the length of the battery cell 20. The battery cell 20 also includes two third side surfaces 28 extending along its width, defining the width of the battery cell 20. For flat battery cells 20, such as square ones, their width is smaller than their length and height, and their third side surfaces 28 have the largest area. Therefore, the third side surfaces 28 are also referred to as the large side surfaces.

[0157] In some embodiments, the battery cell 20 has a first surface 21 on which the electrode terminal 23 is provided; the first surface 21 is connected to the first connection portion 31; or the battery cell 20 has a second surface 22 adjacent to the first surface 21, which is connected to the first connection portion 31.

[0158] The first surface 21 may refer to the surface of the battery cell 20 where the electrode terminal 23 is provided. As an example, in the battery cell 20 shown in FIG9 , the electrode terminal 23 is provided on the first side surface 26, i.e., the first side surface 26 is the first surface 21. Of course, in other examples, the first surface 21 may also refer to other side surfaces of the battery cell 20, such as the second side surface 27 or the third side surface 28.

[0159] The second surface 22 may refer to a surface of the battery cell 20 adjacent to the first surface 21. For example, in the battery cell 20 shown in FIG10 , the electrode terminal 23 is provided on the second side surface 27, the first surface 21 is the second side surface 27, and the first side surface 26 is the second surface 22. In other examples, the second surface 22 may be any other side surface of the battery cell 20.

[0160] In one possible embodiment, a battery cell 20 has a first surface 21, on which an electrode terminal 23 is disposed, and the first surface 21 is connected to a first connecting portion 31. As shown in conjunction with Figures 2 and 9 , when multiple battery cells 20 are grouped to form a battery module, particularly prismatic battery cells, the battery module has a large surface area where the first surface 21 is located. This provides a large connection area between the first connecting portion 31 and the first surface 21 of the battery cell 20, resulting in improved connection reliability and facilitating improved structural strength and rigidity of the battery 1100.

[0161] In another possible embodiment, a battery cell 20 has a first surface 21, on which an electrode terminal 23 is provided, and which is connected to a first connection portion 31. The battery cell 20 has a second surface 22 adjacent to the first surface 21, and which is connected to the first connection portion 31. As shown in conjunction with Figures 2 and 10 , when multiple battery cells 20 are grouped to form a battery module, particularly blade battery cells, the battery module has a large surface area where the second surface 22 is located. The large connection area between the first connection portion 31 and the second surface 22 of the battery cell 20 improves connection reliability, thereby improving the structural strength and rigidity of the battery 1100.

[0162] The connection position between the first connection portion 31 and the battery cell 20 can be flexibly set to meet the use requirements of different types of batteries 1100.

[0163] In some embodiments, when the first surface 21 is connected to the first connection portion 31 , the first surface 21 and the first connection portion 31 are bonded.

[0164] It is understandable that the first surface 21 and the first connection portion 31 are bonded together by an adhesive to achieve a fixed connection between the first connection portion 31 and the battery cell 20 . The fixed connection method is simple and can improve the production efficiency of the battery 1100 .

[0165] In some embodiments, when the second surface 22 is connected to the first connection portion 31 , the second surface 22 is bonded to the first connection portion 31 .

[0166] It is understandable that the second surface 22 and the first connection portion 31 are bonded by an adhesive to achieve a fixed connection between the first connection portion 31 and the battery cell 20 . The fixed connection method is simple and can improve the production efficiency of the battery 1100 .

[0167] Please refer to Figures 11 to 13. Figure 11 is a schematic diagram of the structure of another embodiment of the present application, wherein the battery 1100 is hidden in the second housing 12. Figure 12 is a schematic diagram of the exploded structure of the battery 1100 shown in Figure 11, which is hidden in the housing 10. Figure 13 is a schematic diagram of the structure of the connector 30 shown in Figure 12.

[0168] In some embodiments, there are multiple battery cells 20, and the multiple battery cells 20 are arranged in a matrix along the second direction X and the third direction Y, where the second direction X is perpendicular to the third direction Y; the first connecting portion 31 includes a first connecting sub-portion 311 extending along the second direction X and a second connecting sub-portion 312 extending along the third direction Y, the first connecting sub-portion 311 is fixedly connected to the multiple battery cells 20 arranged along the second direction X, and the second connecting sub-portion 312 is fixedly connected to the multiple battery cells 20 arranged along the third direction Y; at least one of the first connecting sub-portion 311 and the second connecting sub-portion 312 is connected to the second connecting portion 32.

[0169] There are multiple battery cells 20, and the multiple battery cells 20 are arranged in a matrix along the second direction X and the third direction Y, and the second direction X is perpendicular to the third direction Y; it can be understood that the multiple battery cells 20 are arranged into multiple columns of battery cells 20, and the multiple columns of battery cells 20 are arranged in sequence along the third direction Y, and the multiple battery cells 20 in each column of battery cells 20 can be arranged in sequence along the second direction X.

[0170] The first connecting sub-portion 311 may refer to the portion of the first connecting portion 31 extending along the second direction X, and the second connecting sub-portion 312 may refer to the portion of the first connecting portion 31 extending along the third direction Y. The first connecting sub-portion 311 and the second connecting sub-portion 312 may be a single unitary body, i.e., an integrally formed structure; alternatively, the first connecting sub-portion 311 and the second connecting sub-portion 312 may be two separate components connected to each other via a connecting structure.

[0171] In some embodiments, the first connecting portion 31 includes at least one first connecting sub-portion 311 and at least one second connecting sub-portion 312, at least one first connecting sub-portion 311 is fixedly connected to a group of multiple battery cells 20 arranged along the second direction X, and at least one second connecting sub-portion 312 is fixedly connected to a group of multiple battery cells 20 arranged along the third direction Y; as an example, the first connecting portion 31 includes multiple first connecting sub-portions 311 and multiple second connecting sub-portions 312, and the multiple first connecting sub-portions 311 and the multiple second connecting sub-portions 312 form a mesh structure; the multiple first connecting sub-portions 311 are respectively fixedly connected to multiple groups of multiple battery cells 20 arranged along the second direction X, and the multiple second connecting sub-portions 312 are respectively fixedly connected to multiple groups of multiple battery cells 20 arranged along the third direction Y.

[0172] At least one of the first connecting sub-section 311 and the second connecting sub-section 312 is connected to the second connecting sub-section 32. It can be understood that the first connecting sub-section 311 is connected to the second connecting sub-section 32, or the second connecting sub-section 312 is connected to the second connecting sub-section 32, or both the first connecting sub-section 311 and the third connecting sub-section 313 are connected to the second connecting sub-section 312.

[0173] When there are multiple first connecting sub-parts 311 and the first connecting sub-parts 311 are connected to the second connecting part 32, some of the first connecting sub-parts 311 may be connected to the second connecting part 32, or all of the first connecting sub-parts 311 may be connected to the second connecting sub-parts 312; wherein, one end of the first connecting sub-part 311 along the second direction X may be connected to the second connecting part 32, or both ends of the first connecting sub-part 311 along the second direction X may be connected to the second connecting part 32. Similarly, when there are multiple second connecting sub-parts 312 and the second connecting sub-parts 312 are connected to the second connecting part 32, some of the second connecting sub-parts 312 may be connected to the second connecting part 32, or all of the second connecting sub-parts 312 may be connected to the second connecting sub-parts 312; wherein, one end of the second connecting sub-part 312 along the third direction Y may be connected to the second connecting part 32, or both ends of the second connecting sub-part 312 along the third direction Y may be connected to the second connecting part 32.

[0174] As an example, the number of the first connecting sub-parts 311 is two, and the number of the second connecting sub-parts 312 is seven. The two first connecting sub-parts 311 and the seven second connecting sub-parts 312 form a mesh structure. The two first connecting sub-parts 311 are connected to the second connecting part 32 at both ends along the second direction X. The first connecting sub-parts 311 and the second connecting part 32 are an integrally formed structure, and the seven second connecting sub-parts 312 are not connected to the second connecting part 32.

[0175] The first connecting sub-portion 311 can fixedly connect multiple battery cells 20 arranged along the second direction X, and the second connecting sub-portion 312 can fixedly connect multiple battery cells 20 arranged along the third direction Y. In this way, the multiple battery cells 20 are fixedly connected in the second direction X and the third direction Y. The multiple battery cells 20 form a whole, which can improve the overall rigidity of the grouped battery cells 20, thereby improving the overall rigidity of the battery 1100, effectively improving the modal state of the battery 1100, allowing the battery 1100 to avoid the resonant frequency of the entire vehicle, and improving the mechanical strength and service life of the battery 1100. In addition, the multiple battery cells 20 are restricted by the first connecting sub-portion 311 and the second connecting sub-portion 312, which can also improve the ability of the battery cells 20 to resist expansion and deformation, which is beneficial to improving the performance of the battery 1100.

[0176] In some embodiments, the first connecting sub-portion 311 is fixedly connected to two adjacent battery cells 20 arranged along the third direction Y; and / or the second connecting sub-portion 312 is fixedly connected to two adjacent battery cells 20 arranged along the second direction X.

[0177] In one possible embodiment, the first connecting sub-portion 311 is fixedly connected to two adjacent battery cells 20 arranged along the third direction Y, so that one first connecting sub-portion 311 can fixedly connect two adjacent groups of multiple battery cells 20 arranged along the second direction X. This can improve the connection reliability of the two adjacent groups of multiple battery cells 20 arranged along the second direction X, thereby improving the structural strength and rigidity of the battery 1100. It can also simplify the structure of the connector 30, reduce the manufacturing cost of the connector 30, and also help improve the production efficiency of the battery 1100. In this case, the first connecting sub-portion 311 can cover at least a portion of the gap between two adjacent battery cells 20 arranged along the third direction Y. Of course, in other embodiments, each group of multiple battery cells 20 arranged along the second direction X can be connected to a corresponding first connecting sub-portion 311.

[0178] In one possible embodiment, the second connecting sub-portion 312 is fixedly connected to two adjacent battery cells 20 arranged along the second direction X, so that one second connecting sub-portion 312 can secure two adjacent groups of multiple battery cells 20 arranged along the third direction Y. This can improve the connection reliability of the two adjacent groups of multiple battery cells 20 arranged along the third direction Y, thereby improving the structural strength and rigidity of the battery 1100. It can also simplify the structure of the connector 30, reduce the manufacturing cost of the connector 30, and also help improve the production efficiency of the battery 1100. In this case, the second connecting sub-portion 312 can cover at least a portion of the gap between two adjacent battery cells 20 arranged along the second direction X. Of course, in other embodiments, each group of multiple battery cells 20 arranged along the third direction Y can be connected to a corresponding second connecting sub-portion 312.

[0179] In one possible embodiment, the first connecting sub-portion 311 is fixedly connected to two adjacent battery cells 20 arranged along the third direction Y; the second connecting sub-portion 312 is fixedly connected to two adjacent battery cells 20 arranged along the second direction X, so that one first connecting sub-portion 311 can be fixedly connected to two adjacent groups of multiple battery cells 20 arranged along the second direction X, and one second connecting sub-portion 312 can fix two adjacent groups of multiple battery cells 20 arranged along the third direction Y, thereby better improving the structural strength of the multiple battery cells 20 and better improving the structural strength of the battery 1100.

[0180] The provision of the first connecting sub-portion 311 and / or the second connecting sub-portion 312 can improve the structural strength of the plurality of battery cells 20 and improve the structural strength and rigidity of the battery 1100; it can also simplify the structure of the connector 30, reduce the manufacturing cost of the connector 30, and also help to improve the production efficiency of the battery 1100.

[0181] Please also refer to Figures 14 to 17. Figure 14 is a schematic diagram of the exploded structure of a battery 1100 hidden within a housing 10, according to further embodiments of the present application. Figure 15 is a schematic diagram of the structure of the connector 30 shown in Figure 14 from one perspective. Figure 16 is a schematic diagram of the structure of the connector 30 shown in Figure 14 from another perspective. Figure 17 is a partial enlarged view of point C in Figure 16.

[0182] In some embodiments, the first connecting sub-portion 311 and the second connecting sub-portion 312 are surrounded to form a receiving area 314; the first connecting portion 31 also includes a third connecting sub-portion 313, which connects the first connecting sub-portion 311 and the second connecting sub-portion 312, and the third connecting sub-portion 313 is located in the receiving area 314.

[0183] The first connecting sub-section 311 extends along the second direction X, and the second connecting sub-section 312 extends along the third direction Y. The first connecting sub-section 311 and the second connecting sub-section 312 are interconnected to form a network structure. The hollow area in the network structure is the receiving area 314, and the structure filling the hollow area is the third connecting sub-section 313; the first connecting sub-section 311, the second connecting sub-section 312 and the third connecting sub-section 313 can form a plate-like structure; wherein, the third connecting sub-section 313 can completely fill the receiving area 314, or can only fill a part of the receiving area 314.

[0184] At least one of the ends of the third connecting sub-portion 313 along the second direction X is connected to the second connecting sub-portion 312. At least one of the ends of the third connecting sub-portion 313 along the third direction Y is connected to the first connecting sub-portion 311. The first connecting sub-portion 311, the second connecting sub-portion 312, and the third connecting sub-portion 313 can be integrally formed.

[0185] The third connecting sub-portion 313 can improve the connection reliability between the first connecting sub-portion 311 and the second connecting sub-portion 312 , thereby improving the structural strength of the connector 30 and further improving the structural strength and rigidity of the battery 1100 .

[0186] In some embodiments, the third connecting sub-portion 313 is provided with a reinforcing rib 3133 to enhance the structural strength of the connector 30 , thereby improving the structural strength and rigidity of the battery 1100 .

[0187] In some embodiments, the battery cell 20 has an electrode terminal 23, and the third connecting sub-portion 313 is provided with an avoidance hole 3131 for avoiding the electrode terminal 23; the third connecting sub-portion 313 is connected to a first blocking portion 3134, the first blocking portion 3134 protrudes from the surface of the third connecting sub-portion 313 toward the battery cell 20, and the first blocking portion 3134 is arranged around the avoidance hole 3131; and / or, the battery cell 20 has a pressure relief mechanism 24, the third connecting sub-portion 313 is provided with a discharge structure 3132, and the discharge structure 3132 is arranged opposite to the pressure relief mechanism 24 to release the discharge discharged through the pressure relief mechanism 24; the third connecting sub-portion 313 is connected to a second blocking portion 3135, the second blocking portion 3135 protrudes from the surface of the third connecting sub-portion 313 toward the battery cell 20, and the second blocking portion 3135 is arranged around the discharge structure 3132.

[0188] The avoidance hole 3131 may refer to a through hole of the third connecting sub-portion 313 to avoid the electrode terminal 23 . The avoidance hole 3131 penetrates the third connecting sub-portion 313 , so that the electrode terminal 23 can pass through the avoidance hole 3131 to facilitate electrical connection between the electrode terminal 23 and the busbar component 51 .

[0189] The first blocking portion 3134 may refer to a protruding structure on the third connecting sub-portion 313 that protrudes from the surface of the third connecting sub-portion 313 toward the battery cell 20, and the first blocking portion 3134 is an annular structure and is arranged around the avoidance hole 3131. In some embodiments, the first blocking portion 3134 extends along the periphery of the avoidance hole 3131 to surround the avoidance hole 3131. In some embodiments, the side wall of the inner circle of the first blocking portion 3134 may be coplanar with the hole wall of the avoidance hole 3131. In some embodiments, the first blocking portion 3134 may be an integrally formed structure with the third connecting sub-portion 313; the first blocking portion 3134 may also be a separate component, and the first blocking portion 3134 is fixed to the third connecting sub-portion 313 by screwing, clamping, bonding, etc. For example, the first blocking portion 3134 may be a sealing strip.

[0190] The pressure relief mechanism 24 is an element or component that activates to release internal pressure when the internal pressure or temperature of the battery cell 20 reaches a predetermined threshold. "Activation" refers to the action of the pressure relief mechanism 24, thereby releasing the internal pressure and temperature of the battery cell 20. The action of the pressure relief mechanism 24 may include, but is not limited to, rupturing, tearing, or melting at least a portion of the pressure relief mechanism 24. Upon activation, the high-temperature, high-pressure substances within the battery cell 20 are discharged from the pressure relief mechanism 24 as exhaust. The predetermined threshold can be adjusted based on design requirements. The predetermined threshold may depend on one or more of the materials of the positive electrode plate, negative electrode plate, electrolyte, and separator in the battery cell 20. The pressure relief mechanism 24 can be a pressure-sensitive or temperature-sensitive element or component. Specifically, when the internal pressure or temperature of the battery cell 20 reaches a predetermined threshold, the pressure relief mechanism 24 activates, thereby creating a channel for internal pressure release. Emissions from the battery cells 20 include, but are not limited to, electrolyte, dissolved or split positive and negative electrode plates, separator fragments, high-temperature and high-pressure gases generated by the reaction, flames, and the like.

[0191] The discharge structure 3132 may refer to a component provided on the third connecting sub-section 313 for releasing the exhaust released by the relief mechanism. Discharge structure 3132 is positioned opposite the pressure relief mechanism 24. Upon activation of the pressure relief mechanism 24, discharge structure 3132 forms a channel through which the exhaust released by the pressure relief mechanism 24 can pass through the third connecting sub-section 313, thereby releasing the exhaust. In some embodiments, discharge structure 3132 may be a discharge hole 31321 extending through the third connecting sub-section 313, allowing the exhaust to be discharged directly from the discharge hole 31321. In some embodiments, discharge structure 3132 may also be a weakened structure provided on the third connecting sub-section 313. Upon activation of the pressure relief mechanism 24, the exhaust breaks through the weakened structure, thereby releasing the exhaust. The weakened structure may be a component that weakens the structure, such as a scratch, groove, or through-hole. In some embodiments, discharge structure 3132 may also be an explosion-proof valve provided on the third connecting sub-section 313. Upon activation of the pressure relief mechanism 24, the exhaust forces the explosion-proof valve to open, thereby releasing the exhaust.

[0192] The second blocking portion 3135 may be a protrusion protruding from the surface of the third connector 313 toward the battery cell 20. The second blocking portion 3135 is annular and surrounds the vent structure 3132. In some embodiments, the second blocking portion 3135 extends along the periphery of the pressure relief mechanism 24 to surround the vent structure 3132. In some embodiments, the inner sidewalls of the second blocking portion 3135 may be coplanar with the periphery of the vent structure 3132. For example, if the vent structure 3132 is a through hole, the inner sidewalls of the second blocking portion 3135 may be coplanar with the wall of the through hole. In some embodiments, the second blocking portion 3135 may be integrally formed with the third connector 313. Alternatively, the second blocking portion 3135 may be a separate component secured to the third connector 313 via screwing, snapping, or bonding. For example, the second blocking portion 3135 may be a sealing strip.

[0193] In some cases, the surface of the battery cell 20 facing the connector 30 is covered with an adhesive, which is bonded to the third connector 313 through the adhesive, thereby achieving a fixed connection between the third connector 313 and the battery cell 20; in the process of bonding the third connector 313 to the battery cell 20, the adhesive is likely to overflow to the electrode terminal 23, the pressure relief mechanism 24 and the discharge structure 3132. If the adhesive overflows onto the electrode terminal 23, the adhesive will affect the electrical connection between the electrode terminal 23 and the busbar component 51, and affect the reliability of the battery cell 20; if the adhesive overflows onto the pressure relief mechanism 24 and the discharge structure 3132, it will affect the operation of the pressure relief mechanism 24 and the discharge structure 3132, thereby affecting the release of emissions and affecting the reliability of the battery 1100. In some cases, during the production process of battery 1100, some solid particles (such as metal particles) may fall onto the surface of the battery cell 20 facing the insulating part 30. The solid particles may move to the electrode terminal 23, the pressure relief mechanism 24 and the discharge structure 3132, affecting the electrical connection between the electrode terminal 23 and the busbar component 51 or the operation of the pressure relief mechanism 24 and the discharge structure 3132, affecting the reliability of the battery cell 20, and thus affecting the reliability of the battery 1100.

[0194] In one possible embodiment, the battery cell 20 has an electrode terminal 23, and the third connecting sub-portion 313 is provided with an avoidance hole 3131 for avoiding the electrode terminal 23; the third connecting sub-portion 313 is connected to the first blocking portion 3134, the first blocking portion 3134 protrudes from the third connecting sub-portion 313 toward the surface of the battery cell 20, and the first blocking portion 3134 is arranged around the avoidance hole 3131; the first blocking portion 3134 can prevent the adhesive or solid particles between the battery cell 20 and the third connecting sub-portion 313 from contacting the electrode terminal 23, thereby reducing the influence of the adhesive or solid particles on the electrical connection between the electrode terminal 23 and the busbar component 51, improving the reliability of the connection between the electrode terminal 23 and the busbar component 51, and improving the reliability of the battery 1100.

[0195] In another possible embodiment, the battery cell 20 has a pressure relief mechanism 24, and the third connecting sub-section 313 is provided with a discharge structure 3132, which is arranged opposite to the pressure relief mechanism 24 to release the emissions discharged through the pressure relief mechanism 24; the third connecting sub-section 313 is connected to a second blocking portion 3135, and the second blocking portion 3135 protrudes from the surface of the third connecting sub-section 313 toward the battery cell 20, and the second blocking portion 3135 is arranged around the discharge structure 3132; the second blocking portion 3135 can prevent the adhesive or solid particles between the battery cell 20 and the third connecting sub-section 313 from contacting the pressure relief mechanism 24 and the discharge structure 3132, so that the emissions can be released in time to improve the reliability of the battery 1100.

[0196] In another possible embodiment, the battery cell 20 has an electrode terminal 23, and the third connecting sub-portion 313 is provided with an avoidance hole 3131 for avoiding the electrode terminal 23; the third connecting sub-portion 313 is connected to the first blocking portion 3134, the first blocking portion 3134 protrudes from the surface of the third connecting sub-portion 313 toward the battery cell 20, and the first blocking portion 3134 is arranged around the avoidance hole 3131; the battery cell 20 has a pressure relief mechanism 24, and the third connecting sub-portion 313 is provided with a discharge structure 3132, and the discharge structure 3132 is arranged opposite to the pressure relief mechanism 24 to release the discharge discharged through the pressure relief mechanism 24; the third connecting sub-portion 313 13 is connected to a second blocking portion 3135, which protrudes from the third connecting sub-portion 313 toward the surface of the battery cell 20, and the second blocking portion 3135 is arranged around the discharge structure 3132; the first blocking portion 3134 and the second blocking portion 3135 can prevent the adhesive or solid particles between the battery cell 20 and the third connecting sub-portion 313 from contacting the electrode terminal 23, the pressure relief mechanism 24 and the discharge structure 3132, so that the electrode terminal 23 can be stably electrically connected to the busbar component 51, and the pressure relief mechanism 24 and the discharge structure 3132 can be opened in time, thereby effectively improving the reliability of the battery 1100.

[0197] The setting of the first blocking portion 3134 can prevent the adhesive or solid particles from contacting the electrode terminal 23, which is beneficial to improving the reliability of the electrical connection between the electrode terminal 23 and the busbar component 51, thereby improving the reliability of the battery 1100; the setting of the second blocking portion 3135 can prevent the adhesive or solid particles from contacting the pressure relief mechanism 24 and the discharge structure 3132, which is beneficial to improving the smoothness of the discharge of emissions, thereby improving the reliability of the battery 1100.

[0198] In some embodiments, the first blocking portion 3134 can abut against the battery cell 20 to increase the sealing performance, and the adhesive or solid particles located between the battery cell 20 and the third connecting sub-portion 313 are more difficult to contact the electrode terminal 23, the electrical connection reliability between the electrode terminal 23 and the busbar component 51 is better, and the battery 1100 has better reliability in use.

[0199] In some embodiments, the second blocking portion 3135 can abut against the battery cell 20 to increase the sealing performance, and the adhesive or solid particles located between the battery cell 20 and the third connecting sub-portion 313 are more difficult to contact the pressure relief mechanism 24 and the discharge structure 3132, so that the pressure relief mechanism 24 and the discharge structure 3132 can discharge the emissions more smoothly, thereby improving the reliability of the battery 1100.

[0200] In some cases, an adhesive is provided on the surface of the battery cell 20 facing the connector 30, and the connector 30 is fixedly connected to the battery cell 20 via the adhesive. However, during the bonding process, the adhesive may overflow into the gap between two adjacent battery cells 20 and solidify in the gap, and the cured adhesive is relatively hard. During the charge and discharge process of the battery cell 20, the cured adhesive is squeezed against the battery cell 20, easily damaging the battery cell 20 and affecting the reliability of the battery cell 20. In some cases, during the manufacturing process of the battery 1100, some solid particles (such as metal particles) may fall onto the surface of the battery cell 20 facing the insulating member 30. The solid particles may move to the gap between two adjacent battery cells 20, easily damaging the battery cell 20 and affecting the reliability of the battery cell 20.

[0201] In some embodiments, a first gap 201 is formed between two adjacent battery cells 20 arranged along the third direction Y; the first connecting sub-portion 311 is provided with a third blocking portion 3111, the third blocking portion 3111 protrudes from the surface of the first connecting sub-portion 311 toward the battery cell 20, and the third blocking portion 3111 is used to prevent adhesive or solid particles from entering the first gap 201; and / or, a second gap 202 is formed between two adjacent battery cells 20 arranged along the second direction X; the second connecting sub-portion 312 is provided with a fourth blocking portion 3121, the fourth blocking portion 3121 protrudes from the surface of the second connecting sub-portion 312 toward the battery cell 20, and the fourth blocking portion 3121 is used to prevent adhesive or solid particles from entering the second gap 202.

[0202] The two adjacent battery cells 20 arranged along the third direction Y are spaced apart, and the gap formed between the two adjacent battery cells 20 is the first gap 201; the third blocking portion 3111 can refer to a protruding structure arranged on the surface of the first connecting sub-portion 311 facing the battery cell 20, and the third blocking portion 3111 can be an integrally formed structure with the first connecting sub-portion 311; the third blocking portion 3111 can also be a separate component, and the third blocking portion 3111 is fixed to the first connecting sub-portion 311 by screwing, clamping, bonding, etc. For example, the third blocking portion 3111 can be a sealing strip, etc.

[0203] In some embodiments, the third blocking portion 3111 extends along the second direction X; in the second direction X, the third blocking portion 3111 may extend from one end to the other end of the first connecting sub-portion 311, so that the third blocking portion 3111 can prevent adhesives or solid particles from entering all first gaps 201 between two adjacent groups of multiple battery cells 20 arranged along the second direction X; the third blocking portion 3111 may also be provided on a partial section of the first connecting sub-portion 311, so that the third blocking portion 3111 can prevent adhesives or solid particles from entering part of the first gaps 201 between two adjacent groups of multiple battery cells 20 arranged along the second direction X.

[0204] In some embodiments, the third barrier portion 3111 may cover the first gap 201 to prevent adhesive or solid particles from entering the first gap 201 .

[0205] In some embodiments, the third blocking portion 3111 includes two first blocking sub-portions 3112 spaced apart from each other. The two first blocking sub-portions 3112 are respectively disposed opposite to two adjacent battery cells 20 arranged along the third direction Y to prevent adhesive or solid particles from entering the first gap 201 .

[0206] The two adjacent battery cells 20 arranged along the second direction X are arranged at intervals, and the gap formed between the two adjacent battery cells 20 is the second gap 202; the fourth blocking portion 3121 can refer to a protruding structure arranged on the surface of the second connecting sub-portion 312 facing the battery cell 20, and the fourth blocking portion 3121 can be an integrally formed structure with the second connecting sub-portion 312; the fourth blocking portion 3121 can also be a separate component, and the fourth blocking portion 3121 is fixed to the second connecting sub-portion 312 by screwing, clamping, bonding, etc. For example, the fourth blocking portion 3121 can be a sealing strip, etc.

[0207] In some embodiments, the fourth blocking portion 3121 extends along the third direction Y; in the third direction Y, the fourth blocking portion 3121 may extend from one end to the other end of the second connecting sub-portion 312, so that the fourth blocking portion 3121 can block the adhesive or solid particles from entering all the first gaps 201 between two adjacent groups of multiple battery cells 20 arranged along the third direction Y; the fourth blocking portion 3121 may also be arranged on a partial section in the second connecting sub-portion 312, so that the fourth blocking portion 3121 can block the adhesive or solid particles from entering part of the first gaps 201 between two adjacent groups of multiple battery cells 20 arranged along the third direction Y.

[0208] In some embodiments, the fourth barrier portion 3121 may cover the second gap 202 to prevent adhesive or solid particles from entering the second gap 202 .

[0209] In some embodiments, the fourth blocking portion 3121 includes two second blocking sub-portions 3122 spaced apart from each other. The two second blocking sub-portions 3122 are respectively disposed opposite to two adjacent battery cells 20 arranged along the second direction X to prevent adhesive or solid particles from entering the second gap 202 .

[0210] In one possible embodiment, a first gap 201 is formed between two adjacent battery cells 20 arranged along the third direction Y; the first connecting sub-portion 311 is provided with a third blocking portion 3111, and the third blocking portion 3111 protrudes from the third connecting sub-portion 313 toward the surface of the battery cell 20, and the third blocking portion 3111 is used to block the adhesive or solid particles located between the third connecting sub-portion 313 and the battery cell 20 from entering the first gap 201; the third blocking portion 3111 can block the adhesive or solid particles from entering the first gap 201, thereby reducing the risk of damage to the battery cell 20, which is beneficial to improving the reliability and service life of the battery 1100.

[0211] In one possible embodiment, a second gap 202 is formed between two adjacent battery cells 20 arranged along the second direction X; the second connecting sub-portion 312 is provided with a fourth blocking portion 3121, and the fourth blocking portion 3121 protrudes from the second connecting sub-portion 312 toward the surface of the battery cell 20. The fourth blocking portion 3121 is used to block the adhesive or solid particles located between the third connecting sub-portion 313 and the battery cell 20 from entering the second gap 202. The fourth blocking portion 3121 can block the adhesive or solid particles from entering the second gap 202, thereby reducing the risk of damage to the battery cell 20, which is beneficial to improving the reliability of the battery 1100.

[0212] In another possible embodiment, a first gap 201 is formed between two adjacent battery cells 20 arranged along the third direction Y; the first connecting sub-portion 311 is provided with a third blocking portion 3111, the third blocking portion 3111 protruding from the surface of the first connecting sub-portion 311 toward the battery cell 20, and the third blocking portion 3111 is used to prevent adhesive or solid particles from entering the first gap 201; a second gap 202 is formed between two adjacent battery cells 20 arranged along the second direction X; the second connecting sub-portion 312 is provided with a fourth blocking portion 3121, the fourth blocking portion 3121 protruding from the surface of the second connecting sub-portion 312 toward the battery cell 20, and the fourth blocking portion 3121 is used to prevent adhesive or solid particles from entering the second gap 202; the provision of the third blocking portion 3111 and the fourth blocking portion 3121 can reduce the risk of adhesive or solid particles entering the first gap 201 and the second gap 202, effectively reduce the risk of damage to the battery cell 20, and help improve the reliability of the battery 1100.

[0213] The provision of the third blocking portion 3111 and / or the fourth blocking portion 3121 can reduce the risk of adhesive or solid particles entering the gap between two adjacent battery cells 20 , reduce the risk of damage to the battery cells 20 , and help improve the reliability of the battery 1100 .

[0214] In some embodiments, the third blocking portion 3111 can abut against the battery cell 20 to increase the sealing performance, making it more difficult for adhesives or solid particles to enter the first gap 201, which can effectively reduce the risk of damage to the battery cell 20 and help improve the reliability of the battery 1100.

[0215] In some embodiments, the fourth blocking portion 3121 can abut against the battery cell 20 to increase the sealing performance, making it more difficult for adhesives or solid particles to enter the second gap 202, which can effectively reduce the risk of damage to the battery cell 20 and help improve the reliability of the battery 1100.

[0216] In some embodiments, the connector 30 is an insulating member 301 , and the battery 1100 further includes a busbar 51 for electrically connecting to the electrode terminals 23 of the battery cells 20 ; the first connecting portion 31 of the insulating member 301 is disposed between the busbar 51 and the battery cells 20 .

[0217] Insulating member 301 may refer to a component with insulating properties. Insulating member 301 may be made of an insulating material, such as epoxy resin, polycarbonate, polyvinyl chloride, polypropylene, etc. Insulating member 301 may also refer to a component coated with an insulating layer, which may be, but is not limited to, a polyurethane layer, an epoxy resin layer, a silicone rubber layer, a polyacrylate layer, or a fluorocarbon layer.

[0218] The busbar 51 may be a component used to electrically connect to the electrode terminals 23 of the battery cells 20. The busbar 51 is electrically connected to the electrode terminals 23 to enable the input and output of electrical energy to and from the battery cells 20. The busbar 51 can also electrically connect the electrode terminals 23 of different battery cells 20 to enable series, parallel, or mixed connection of different battery cells 20. The busbar 51 may be welded to the electrode terminals 23 or electrically connected to the electrode terminals 23 using other electrical connection methods. The busbar 51 may be a conductive member such as a copper busbar or an aluminum busbar.

[0219] The first connecting portion 31 of the insulating member 301 is arranged between the busbar component 51 and the battery cell 20, so that the first connecting portion 31 and the battery cell 20 are insulated, reducing the short circuit risk of the battery cell 20 and improving the reliability of the battery 1100; in addition, the insulating member 301 located between the busbar component 51 and the battery cell 20 in the battery 1100 can also be directly used as the connecting member 30, without the need to set up an additional connecting member 30, which is beneficial to improving the compactness of the structure of the battery 1100 and reducing the production cost of the battery 1100.

[0220] In some embodiments, the busbar component 51 is integrated with the insulating member 301 , which is beneficial to improving the integration of the battery 1100 and improving the performance of the battery 1100 .

[0221] In some embodiments, the connecting member 30 is a heat exchange member 302 , and the heat exchange member 302 is used to exchange heat with the battery cell 20 .

[0222] The heat exchange element 302 may be a component that exchanges heat with the battery cells 20. Heat exchange channels may be provided within the heat exchange element 302, through which a heat exchange medium flows, thereby achieving heat exchange with the battery cells 20. When the temperature of the heat exchange medium is higher than that of the battery cells 20, the heat exchange medium heats the battery cells 20; when the temperature of the heat exchange medium is lower than that of the battery cells 20, the heat exchange medium cools the battery cells 20, maintaining a suitable temperature environment for optimal charge and discharge performance. The heat exchange medium may be, but is not limited to, water, air, coolant, etc.

[0223] The heat exchanger 302 can realize the temperature control of the battery cell 20, so that the battery 1100 can exert better charging and discharging performance; in addition, the heat exchanger 302 in the battery 1100 can also be directly used as the connecting member 30, without the need to set up an additional connecting member 30, which is beneficial to improving the compactness of the structure of the battery 1100 and reducing the production cost of the battery 1100.

[0224] In some embodiments, the battery 1100 also includes a busbar component 51 for electrically connecting to the battery cell 20; the first connection portion 31 of the heat exchanger 302 is arranged between the busbar component 51 and the battery cell 20; wherein, at least one of the surfaces of the first connection portion 31 of the heat exchanger 302 facing the busbar component 51 and the surface facing away from the busbar component 51 is covered with an insulating layer.

[0225] The insulating layer may refer to a surface coating with insulating properties, and the insulating layer may be, but is not limited to, a polyurethane layer, an epoxy resin layer, a silicone rubber layer, a polyacrylate layer, or a fluorocarbon layer.

[0226] In one possible embodiment, the battery 1100 also includes a busbar component 51 for electrically connecting to the battery cell 20; the first connection portion 31 of the heat exchanger 302 is arranged between the busbar component 51 and the battery cell 20; wherein, the surface of the first connection portion 31 of the heat exchanger 302 facing the busbar component 51 is covered with an insulating layer, and the insulating layer is located between the first connection portion 31 and the busbar component 51.

[0227] The insulating layer can insulate and separate the first connecting part 31 and the conduit component 51. In this way, a heat exchange component 302 is provided to realize heat exchange of the battery cell 20, insulation from the conduit component 51, and connection between the battery cell 20 and the box body 10, which is beneficial to reduce the number of components of the battery 1100, improve the compactness of the structure, enhance the performance of the battery 1100 and reduce the production cost of the battery 1100.

[0228] In another possible embodiment, the battery 1100 also includes a busbar component 51 for electrically connecting to the battery cell 20; the first connection portion 31 of the heat exchanger 302 is arranged between the busbar component 51 and the battery cell 20; wherein, the surface of the first connection portion 31 of the heat exchanger 302 facing away from the busbar component 51 is covered with an insulating layer.

[0229] The insulating layer is located between the first connecting part 31 and the battery cell 20. The insulating layer can insulate and separate the first connecting part 31 and the battery cell 20, thereby realizing insulation between the heat exchange component 302 and the battery cell 20. In this way, a heat exchange component 302 is set up to realize heat exchange of the battery cell 20, insulation with the battery cell 20, and connection between the battery cell 20 and the box body 10, which is beneficial to reduce the number of components of the battery 1100, improve the compactness of the structure, enhance the performance of the battery 1100 and reduce the production cost of the battery 1100.

[0230] In another possible embodiment, the battery 1100 also includes a busbar component 51 for electrically connecting to the battery cell 20; the first connection portion 31 of the heat exchanger 302 is arranged between the busbar component 51 and the battery cell 20; wherein, the surface of the first connection portion 31 of the heat exchanger 302 facing away from the busbar component 51 and the surface facing the busbar component 51 are both covered with an insulating layer.

[0231] Double-layer insulation can be formed between the heat exchange component 302 and the convergence component 51 and between the heat exchange component 302 and the battery cell 20, with good insulation effect, low risk of short circuit of the battery 1100, and high reliability of the battery 1100; in addition, setting a heat exchange component 302 can not only realize heat exchange of the battery cell 20, but also realize insulation with the battery cell 20 and the convergence component 51, and also realize connection between the battery cell 20 and the box body 10, which is beneficial to reduce the number of components of the battery 1100, improve the compactness of the structure, enhance the performance of the battery 1100 and reduce the production cost of the battery 1100.

[0232] At least one of the surfaces of the first connecting portion 31 of the heat exchanger 302 facing the confluence component 51 and the surface facing away from the confluence component 51 is covered with an insulating layer, which can achieve insulation from the battery cell 20 and / or the confluence component 51. At the same time, the heat exchanger 302 can also achieve heat exchange of the battery cell 20 and connection between the battery cell 20 and the box body 10. Such a heat exchanger 302 can achieve three functions, which can reduce the number of components of the battery 1100, improve the compactness of the structure, enhance the performance of the battery 1100 and reduce the production cost of the battery 1100.

[0233] In some embodiments, the battery 1100 further includes a sampling component 52 for sampling information of the battery cell 20 , and the sampling component 52 is connected to the connector 30 .

[0234] The sampling assembly 52 may be a component that uses information from the battery cells 20. This information may include current, voltage, temperature, and other information from the battery cells 20. After collecting this information, the sampling assembly 52 may feed it back to the control system of the battery 1100 (e.g., a BMS (Battery Management System)). The control system then controls the charging and discharging of the battery cells 20 to improve the charge and discharge performance of the battery 1100. If there are multiple battery cells 20, the sampling assembly 52 may collect information from a portion of the battery cells 20, or from all of the battery cells 20. In some embodiments, the sampling assembly 52 may be directly connected to the battery cells 20 to collect information from the battery cells 20, or it may be connected to the busbar assembly 51 to collect information from the battery cells 20.

[0235] The sampling assembly 52 is connected to the connector 30 , so that the sampling assembly 52 and the connector 30 are integrated together, which can improve the integration of the battery 1100 and thus improve the performance of the battery 1100 .

[0236] In some embodiments, the sampling assembly, the connector, and the confluence component can be integrated into an integral structure, which is beneficial for simplifying the production process, improving the production efficiency of the battery, and reducing the production cost.

[0237] The embodiments of the present application are described below with reference to some specific embodiments.

[0238] Example 1

[0239] As shown in Figures 1 to 5 and Figure 9, in this embodiment, the battery 1100 includes a case 10, a connector 30 and at least one battery cell 20; the at least one battery cell 20 is located in the case 10; the connector 30 includes a first connecting portion 31 and a second connecting portion 32 connected to each other, the first connecting portion 31 is fixedly connected to the at least one battery cell 20, and the second connecting portion 32 is fixedly connected to the case 10.

[0240] In this embodiment, the box body 10 includes a first box body 11 and a second box body 12. The first box body 11 is configured with a receiving cavity 113 having an opening. The battery cell 20 is located in the receiving cavity 113. The second box body 12 covers the opening of the receiving cavity 113. At least one of the first box body 11 and the second box body 12 is fixedly connected to the second connecting portion 32.

[0241] In this embodiment, when the first box body 11 is fixedly connected to the second connecting portion 32, the first box body 11 includes a plurality of side wall portions 111 for connecting to the second box body 12, and the plurality of side wall portions 111 are connected and enclosed to form a receiving cavity 113; wherein, at least one side wall portion 111 is fixedly connected to the second connecting portion 32, wherein, at least one side wall portion 111 is fixedly connected to the second connecting portion 32.

[0242] In this embodiment, the second connecting portions 32 are connected to two opposite sides of the first connecting portion 31 , and the two second connecting portions 32 are respectively fixedly connected to two oppositely disposed sidewall portions 111 .

[0243] In this embodiment, there are four sidewalls 111, two of which extend along the length of the battery 1100 and are spaced apart along the width of the battery 1100, and the other two extend along the width of the battery 1100 and along the length of the battery 1100, and the four sidewalls 111 are arranged to form a rectangular frame structure. There are two second connecting portions 32, and the two second connecting portions 32 are located on opposite sides of the first connecting portion 31 along the second direction X. The two sidewalls 111 spaced apart along the second direction X are fixedly connected to the two second connecting portions 32, respectively. Of course, in other embodiments, the second connecting portions 32 can also be fixedly connected to the sidewalls 111 in a one-to-one correspondence. One side opening of the rectangular frame structure is covered with the second box body 12, and the other side opening of the rectangular frame structure is covered with the bottom plate 112.

[0244] The battery 1100 has a height direction, a length direction, and a width direction. The height direction of the battery 1100 can be referred to as the first direction Z in the figure, the width direction of the battery 1100 can be referred to as the second direction X in the figure, and the length direction of the battery 1100 can be referred to as the third direction Y in the figure. The housing 10 defines the external structure of the battery 1100. The height direction of the housing 10 can be the height direction of the battery 1100, the length direction of the housing 10 can be the length direction of the battery 1100, and the width direction of the housing 10 can be the width direction of the battery 1100.

[0245] In this embodiment, the side wall portion 111 connected to the second connection portion 32 is provided with a mounting structure 1113 for mounting the battery 1100. The mounting structure 1113 may be a mounting beam provided on the side wall portion 111. The mounting beam may be integrally formed with the side wall portion 111. The mounting beam is provided with a connecting hole through which a connecting member is connected to the vehicle. The connecting member may be, but is not limited to, a screw or bolt.

[0246] In this embodiment, the second connection portion 32 is bonded to the sidewall portion 111 .

[0247] In this embodiment, a receiving notch 1112 is formed at the end of the side wall portion 111 facing the second box body 12 , and the second connecting portion 32 is fixed in the receiving notch 1112 .

[0248] In this embodiment, in the first direction Z, the second connection portion 32 does not protrude from the end surface of the side wall portion 111 toward the second box body 12 ; wherein the first direction Z is the direction from the first box body 11 toward the second box body 12 .

[0249] In this embodiment, the second connection portion 32 is supported on the wall of the receiving notch 1112 facing the second box body 12 , and the second connection portion 32 is also bonded to the wall of the receiving notch 1112 facing the second box body 12 via adhesive 53 .

[0250] In this embodiment, a connector 30 is provided on a side of the battery cell 20 facing the second box 12 .

[0251] In this embodiment, the battery cell 20 has a first surface 21 , and the electrode terminal 23 is disposed on the first surface 21 . The first surface 21 is connected to the first connecting portion 31 .

[0252] In this embodiment, the first surface 21 is bonded to the first connection portion 31 .

[0253] In this embodiment, the battery cell 20 has a height direction, a length direction, and a width direction. The height direction of the battery cell 20 can be parallel to the first direction Z, the width direction of the battery cell 20 can be parallel to the second direction X, and the length direction of the battery cell 20 can be parallel to the third direction Y. The battery cells 20 are arranged in this way in the box 10, which can better utilize the internal space of the box 10 and facilitate the installation of other components.

[0254] The battery cell 20 includes two first side surfaces 26 extending along its height, with the space between the two first side surfaces 26 defining the height of the battery cell 20. The battery cell 20 also includes two second side surfaces 27 extending along its length, defining the length of the battery cell 20. The battery cell 20 also includes two third side surfaces 28 extending along its width, defining the width of the battery cell 20. For flat battery cells 20, such as square ones, their width is smaller than their length and height, and their third side surfaces 28 have the largest area. Therefore, the third side surfaces 28 are also referred to as the large side surfaces.

[0255] In this embodiment, the electrode terminal 23 is disposed on the first side surface 26 , that is, the first side surface 26 is the first surface 21 .

[0256] Example 2

[0257] The difference between this embodiment and embodiment 1 is that: as shown in Figure 6, the battery 1100 also includes a fastener 40, the second connecting portion 32 is provided with a first connecting hole 321, and the side wall portion 111 is provided with a second connecting hole 1111, and the fastener 40 is passed through the first connecting hole 321 and the second connecting hole 1111 to fix the second connecting portion 32 and the side wall portion 111 together.

[0258] In this embodiment, in the first direction Z, the fastener 40 does not protrude from the end surface of the side wall portion 111 toward the second box body 12 ; wherein the first direction Z is the direction from the first box body 11 toward the second box body 12 .

[0259] In this embodiment, a second connecting hole 1111 is opened on the wall surface of the receiving notch 1112 facing the second box body 12, and the fastener 40 passes through the first connecting hole 321 and the second connecting hole 1111 in sequence, thereby fixing the second connecting portion 32 on the side wall portion 111, and the end of the fastener 40 facing the second box body 12 is also received in the receiving notch 1112 and does not protrude from the end surface of the side wall portion 111 facing the second box body 12.

[0260] In this embodiment, the fastener 40 is a rivet 41 , which passes through the first connection hole 321 and the second connection hole 1111 , thereby fixing the second connection portion 32 and the side wall portion 111 together.

[0261] Example 3

[0262] This embodiment differs from the second embodiment in that, as shown in FIG. 7 , the fastener 40 is a bolt 42 , which passes through the first connection hole 321 and the second connection hole 1111 , thereby fixing the second connection portion 32 and the side wall portion 111 .

[0263] Example 4

[0264] The difference between this embodiment and the second embodiment is that: as shown in Figure 8, the fastener 40 is a rivet 41, the rivet 41 passes through the first connection hole 321 and the second connection hole 1111, and the adhesive 53 is filled between the rivet cap of the rivet 41 and the second connection part 32 to improve the reliability of the fixed connection between the second connection part 32 and the side wall part 111, thereby improving the structural strength of the battery 1100.

[0265] Example 5

[0266] The difference between this embodiment and the first embodiment is that, as shown in FIG. 10 , the battery cell 20 has a second surface 22 adjacent to the first surface 21 , and the second surface 22 is connected to the first connecting portion 31 .

[0267] In this embodiment, the electrode terminal 23 is disposed on the second side surface 27 , the first surface 21 is the second side surface 27 , and the first side surface 26 is the second surface 22 .

[0268] Example 6

[0269] This embodiment differs from the first embodiment in that, as shown in Figures 11 to 13, there are multiple battery cells 20, which are arranged in a matrix along the second direction X and the third direction Y, with the second direction X being perpendicular to the third direction Y. The first connecting portion 31 includes a first connecting sub-portion 311 extending along the second direction X and a second connecting sub-portion 312 extending along the third direction Y. The first connecting sub-portion 311 is fixedly connected to the multiple battery cells 20 arranged along the second direction X, and the second connecting sub-portion 312 is fixedly connected to the multiple battery cells 20 arranged along the third direction Y. At least one of the first connecting sub-portion 311 and the second connecting sub-portion 312 is connected to the second connecting portion 32.

[0270] In this embodiment, the number of first connecting sub-parts 311 is two, and the number of second connecting sub-parts 312 is seven. The two first connecting sub-parts 311 and the seven second connecting sub-parts 312 form a mesh structure. The two first connecting sub-parts 311 are connected to the second connecting part 32 at both ends along the second direction X. The first connecting sub-parts 311 and the second connecting part 32 are an integrally formed structure, and the seven second connecting sub-parts 312 are not connected to the second connecting part 32.

[0271] In this embodiment, the first connecting sub-portion 311 is fixedly connected to two adjacent battery cells 20 arranged along the third direction Y; the second connecting sub-portion 312 is fixedly connected to two adjacent battery cells 20 arranged along the second direction X.

[0272] In this embodiment, the connector 30 is an insulating member 301 . The battery 1100 further includes a busbar 51 for electrically connecting to the electrode terminals 23 of the battery cells 20 . The first connecting portion 31 of the insulating member 301 is disposed between the busbar 51 and the battery cells 20 .

[0273] In this embodiment, the battery 1100 further includes a sampling component 52 for sampling information of the battery cell 20 , and the sampling component 52 is connected to the connector 30 .

[0274] Example 7

[0275] The difference between this embodiment and the sixth embodiment is that: as shown in Figures 14 to 17, the first connecting sub-section 311 and the second connecting sub-section 312 are surrounded to form a receiving area 314; the first connecting section 31 also includes a third connecting sub-section 313, which connects the first connecting sub-section 311 and the second connecting sub-section 312, and the third connecting sub-section 313 is located in the receiving area 314.

[0276] In this embodiment, the battery cell 20 has an electrode terminal 23, and the third connecting sub-portion 313 is provided with an avoidance hole 3131 for avoiding the electrode terminal 23; the third connecting sub-portion 313 is connected to a first blocking portion 3134, the first blocking portion 3134 protrudes from the surface of the third connecting sub-portion 313 facing the battery cell 20, and the first blocking portion 3134 is arranged around the avoidance hole 3131; the battery cell 20 has a pressure relief mechanism 24, and the third connecting sub-portion 313 is provided with a discharge structure 3132, which is arranged opposite to the pressure relief mechanism 24 to release the discharge discharged through the pressure relief mechanism 24; the third connecting sub-portion 313 is connected to a second blocking portion 3135, the second blocking portion 3135 protrudes from the surface of the third connecting sub-portion 313 facing the battery cell 20, and the second blocking portion 3135 is arranged around the discharge structure 3132.

[0277] In this embodiment, a first gap 201 is formed between two adjacent battery cells 20 arranged along the third direction Y; the first connecting sub-portion 311 is provided with a third blocking portion 3111, the third blocking portion 3111 protrudes from the surface of the first connecting sub-portion 311 toward the battery cell 20, and the third blocking portion 3111 is used to prevent adhesive or solid particles from entering the first gap 201; a second gap 202 is formed between two adjacent battery cells 20 arranged along the second direction X; the second connecting sub-portion 312 is provided with a fourth blocking portion 3121, the fourth blocking portion 3121 protrudes from the surface of the second connecting sub-portion 312 toward the battery cell 20, and the fourth blocking portion 3121 is used to prevent adhesive or solid particles from entering the second gap 202.

[0278] Example 8

[0279] The difference between this embodiment and the seventh embodiment is that the connecting member 30 is a heat exchange member 302 , and the heat exchange member 302 is used to exchange heat with the battery cell 20 .

[0280] In this embodiment, the battery 1100 also includes a busbar component 51 for electrically connecting to the battery cell 20; the first connection portion 31 of the heat exchange component 302 is arranged between the busbar component 51 and the battery cell 20; wherein, the surface of the first connection portion 31 of the heat exchange component 302 facing the busbar component 51 and the surface facing away from the busbar component 51 are covered with an insulating layer.

[0281] In other embodiments of the present application, in combination with FIG1 , an electrical device is provided, comprising the battery 1100 as described in the above embodiment.

[0282] The electrical device of the embodiment of the present application adopts the above-mentioned battery 1100. The battery 1100 has good structural strength and rigidity, which is conducive to improving the performance of the electrical device.

[0283] In some embodiments, the electric device is a vehicle 1000 , and the surface with the largest area of ​​the battery cell 20 faces a door of the vehicle 1000 .

[0284] In some embodiments, the third side 28 of the battery cell 20 shown in Figures 9 and 10 is the largest surface. In some implementations, the first side 26 of the battery cell 20 is the largest surface. In some embodiments, the second side 27 of the battery cell 20 is the largest surface.

[0285] By adopting the technical solution of this embodiment, the surface with the largest area of ​​the battery cell 20 is arranged to face the door of the vehicle 1000, so that when the vehicle 1000 is hit by a side pole or squeezed from the side, the deformation is borne by the surface with the largest area. Since the surface with the largest area of ​​the battery cell 20 allows a much larger amount of intrusion than other surfaces of the battery cell 20, the risk of short circuit after the battery cell 20 is squeezed and deformed will be relatively low, which can greatly improve the safety of the battery 1100 in side pole collision and side squeezing conditions.

[0286] The above description of the various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced with each other and will not be repeated herein for the sake of brevity.

[0287] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery, characterized in that: Comprising, a box body; at least one battery cell, located within the box body; and a connecting member, including a first connecting portion and a second connecting portion connected to each other, the first connecting portion being fixedly connected to at least one of the battery cells, and the second connecting portion being fixedly connected to the box body.

2. The battery according to claim 1, wherein: The box body includes a first box body and a second box body. The first box body is configured with a receiving cavity having an opening, the battery cell is located within the receiving cavity, and the second box body covers the opening of the receiving cavity; At least one of the first box body and the second box body is fixedly connected to the second connecting portion.

3. The battery according to claim 2, characterized in that: When the first box body is fixedly connected to the second connecting portion, the first box body includes a plurality of side wall portions for connecting to the second box body, and the plurality of side wall portions are joined and enclose to form the receiving cavity; wherein, at least one of the side wall portions is fixedly connected to the second connecting portion; Wherein, at least one of the side wall portions is fixedly connected to the second connecting portion.

4. The battery according to claim 3, wherein: The second connecting portion is adhesively bonded to the side wall portion.

5. The battery according to claim 3 or 4, characterized in that: The battery further includes a fastener. The second connecting portion is provided with a first connecting hole, and the side wall portion is provided with a second connecting hole. The fastener passes through the first connecting hole and the second connecting hole to fixedly connect the second connecting portion and the side wall portion.

6. The battery according to claim 5, characterized in that: In a first direction, the fastener does not protrude from the end surface of the side wall portion facing the second box body; wherein, the first direction is the direction in which the first box body faces the second box body.

7. The battery according to any one of claims 3 to 6, characterized in that: The end of the side wall portion facing the second box body is configured with a receiving notch, and the second connecting portion is fixed within the receiving notch.

8. The battery according to claim 7, characterized in that: In a first direction, the second connecting portion does not protrude from the end surface of the side wall portion facing the second box body; wherein, the first direction is the direction in which the first box body faces the second box body.

9. The battery according to any one of claims 3 to 8, characterized in that: The second connecting portions are connected to opposite sides of the first connecting portion, and the two second connecting portions are respectively fixedly connected to two relatively arranged side wall portions.

10. The battery according to any one of claims 3 to 9, characterized in that: The side wall portion connected to the second connecting portion is provided with a mounting structure for mounting the battery.

11. The battery according to any one of claims 2 to 10, characterized in that: The connecting member is provided on one side of the battery cell facing the second box body and / or on the side of the battery cell facing away from the second box body.

12. The battery according to any one of claims 1 to 11, characterized in that: The battery cell has a first surface, and electrode terminals are provided on the first surface; The first surface is connected to the first connecting portion; or, the battery cell has a second surface adjacent to the first surface, and the second surface is connected to the first connecting portion.

13. The battery according to claim 12, characterized in that: When the first surface is connected to the first connecting portion, the first surface is adhesively bonded to the first connecting portion; When the second surface is connected to the first connecting portion, the second surface is adhesively bonded to the first connecting portion.

14. The battery according to any one of claims 1 to 13, characterized in that: The number of the battery cells is multiple, and the multiple battery cells are arranged in a matrix in a second direction and a third direction, and the second direction is perpendicular to the third direction; The first connecting portion includes a first connecting sub-portion extending in the second direction and a second connecting sub-portion extending in the third direction. The first connecting sub-portion is fixedly connected to a plurality of the battery cells arranged in the second direction, and the second connecting sub-portion is fixedly connected to a plurality of the battery cells arranged in the third direction; at least one of the first connecting sub-portion and the second connecting sub-portion is connected to the second connecting portion.

15. The battery according to claim 14, wherein: The first connecting sub-portion is fixedly connected to two adjacent battery cells arranged in the third direction; and / or, the second connecting sub-portion is fixedly connected to two adjacent battery cells arranged in the second direction.

16. The battery according to claim 14 or 15, characterized in that: A receiving area is formed by enclosing the first connecting sub-portion and the second connecting sub-portion; the first connecting portion further includes a third connecting sub-portion that connects the first connecting sub-portion and the second connecting sub-portion, and the third connecting sub-portion is located in the receiving area.

17. The battery according to claim 16, wherein: The battery cell has an electrode terminal, and the third connecting sub-portion is provided with an avoidance hole for avoiding the electrode terminal; the third connecting sub-portion is connected with a first blocking portion that protrudes from the surface of the third connecting sub-portion facing the battery cell, and the first blocking portion is arranged around the avoidance hole in a ring shape; and / or, the battery cell has a pressure relief mechanism, and the third connecting sub-portion is provided with a discharge structure that is arranged opposite to the pressure relief mechanism to release the discharged substances discharged through the pressure relief mechanism; the third connecting sub-portion is connected with a second blocking portion that protrudes from the surface of the third connecting sub-portion facing the battery cell, and the second blocking portion is arranged around the discharge structure in a ring shape.

18. The battery according to any one of claims 14 to 17, characterized in that: A first gap is formed between two adjacent battery cells arranged in the third direction; the first connecting sub-portion is provided with a third blocking portion that protrudes from the surface of the first connecting sub-portion facing the battery cell, and the third blocking portion is used to block adhesive or solid particles from entering the first gap; and / or, a second gap is formed between two adjacent battery cells arranged in the second direction; the second connecting sub-portion is provided with a fourth blocking portion that protrudes from the surface of the second connecting sub-portion facing the battery cell, and the fourth blocking portion is used to block adhesive or solid particles from entering the second gap.

19. The battery according to any one of claims 1 to 18, characterized in that: The connecting member is an insulating member, and the battery further includes a busbar component for electrically connecting to the electrode terminals of the battery cells; the first connecting portion of the insulating member is arranged between the busbar component and the battery cells.

20. The battery according to any one of claims 1 to 19, characterized in that: The connecting member is a heat exchange member, and the heat exchange member is used to exchange heat with the battery cells.

21. The battery according to claim 20, wherein: The battery further includes a busbar component for electrically connecting to the battery cells; the first connecting portion of the heat exchange member is arranged between the busbar component and the battery cells; wherein, at least one of the surface of the first connecting portion of the heat exchange member facing the busbar component and the surface facing away from the busbar component is covered with an insulating layer.

22. The battery according to any one of claims 1 to 21, characterized in that: The battery further includes a sampling component for sampling information of the battery cells, and the sampling component is connected to the connecting member.

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

24. The electrical device according to claim 23, characterized in that: The electrical device is a vehicle, and the surface with the largest area of the battery cell faces the vehicle door.

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