Batteries and electrical devices

Abstract

The present invention relates to a battery and electrical device, the battery comprising a case (10), a connecting member (30), and at least one battery cell (20), the at least one battery cell (20) being located within the case (10), the connecting member (30) comprising a connected first connecting portion (31) and a second connecting portion (32), the first connecting portion (31) being fixedly connected to the at least one battery cell (20), and the second connecting portion (32) being fixedly connected to the case (10), thereby enabling the connecting member (30) to stably connect the battery cell (20) and the case (10), improving the reliability of the connection between the battery cell (20) and the case (10), thereby improving the structural strength and rigidity of the battery, and improving the reliability and lifespan of the battery.

Description

Technical Field

[0001] The present application pertains to the field of battery technology, and in particular relates to a battery and an electric device.

Background Art

[0002] Energy conservation and emission reduction are of great significance for the sustainable development of the automotive industry. Against this background, electric vehicles have become a core part in the sustainable development of the automotive industry due to their energy-saving and environment-friendly characteristics. However, for electric vehicles, battery technology is a key factor affecting their development.

[0003] With the advancement of battery technology, various performances of batteries, especially the structural strength of batteries which is critical to battery performance, are continuously optimized. If the structural strength of a battery cannot be guaranteed, there is a relatively high risk in the use of the battery. Therefore, how to improve the structural strength of batteries remains a problem to be solved.

[0004] The above description is merely intended to provide background art information related to the present application, and does not necessarily constitute prior art.

Summary of the Invention

[0005] An objective of the embodiments of the present application is to provide a battery and an electric device that improve the structural strength of the battery.

[0006] The embodiments of the present application adopt the following technical solutions.

[0007] In a first aspect, a battery is provided, which includes a case, a connecting member, and at least one battery cell. The at least one battery cell is located inside the case. The connecting member includes a first connecting portion and a second connecting portion that are 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.

[0008] An embodiment of the present invention relates to a battery comprising a case, a connecting member, and at least one battery cell, wherein the battery cell is located within the case, and the connecting member comprises a connected first connecting portion and a connected second connecting portion, the first connecting portion being fixedly connected to the battery cell and the second connecting portion being fixedly connected to the case, thereby enabling the connecting member to stably connect the battery cell and the case, improving the reliability of the connection between the battery cell and the case, thereby improving the structural strength and rigidity of the battery, and improving the reliability of use and lifespan of the battery.

[0009] In some embodiments, the case comprises a first case and a second case, the first case comprising a housing cavity having an opening, the battery cell being located within the housing cavity, the second case covering the opening of the housing cavity, and at least one of the first and second cases being fixedly connected to a second connection.

[0010] By adopting the technical proposal of this embodiment, the second case can seal the opening of the housing cavity, improving the protective effect of the case on the battery cells, thereby improving the reliability of the battery's operation. Furthermore, the connection position between the second connection part and the case is flexible and diverse, and processing and manufacturing are simple.

[0011] In some embodiments, when the first case is fixedly connected to the second connection, the first case includes a plurality of sidewalls for connection to the second case, the plurality of sidewalls are connected and surround to form a housing cavity, of which at least one sidewall is fixedly connected to the second connection.

[0012] By adopting the technical proposal of this embodiment, the second case has high structural strength in the side wall portion, the second connection portion is connected to the side wall portion, and the connection strength between the second connection portion and the case can be increased, thereby improving the structural strength and rigidity of the battery.

[0013] In some embodiments, the second connection is bonded to the side wall.

[0014] By adopting the technical method of this embodiment, the second connection part and the side wall part are connected by adhesive, which simplifies the connection operation and is advantageous in improving the manufacturing efficiency of the battery.

[0015] In some embodiments, the battery further includes a fastening member, the second connection portion having a first connection hole, the side wall portion having a second connection hole, and the fastening member is drilled through the first and second connection holes to fix the second connection portion and the side wall portion.

[0016] By adopting the technical method of this embodiment, the second connection part and the side wall part are fixedly connected using fastening members, the connection reliability of the fastening members is high, which is advantageous in improving the structural strength and rigidity of the battery, the connection operation of the fastening members is simple, and the manufacturing efficiency of the battery can be improved.

[0017] In some embodiments, in the first direction, the fastening member does not protrude from the end face of the side wall toward the second case, and the first direction is the direction toward the second case of the first case.

[0018] By adopting the technical solution of this embodiment, the fastening member does not protrude from the end face of the side wall toward the second case, the fastening member is less likely to interfere with the second case, and this is advantageous in improving the structural strength and assembly efficiency of the battery.

[0019] In some embodiments, a housing notch is provided at the end of the side wall portion facing the second case, and the second connection portion is fixed within the housing notch.

[0020] By adopting the technical proposal of this embodiment, the second connection portion is housed within the housing notch, reducing the risk of interference between the second connection portion and the second case, which is advantageous in improving the structural strength and assembly efficiency of the battery.

[0021] In some embodiments, in the first direction, the second connection portion does not protrude from the end face of the side wall portion facing the second case, wherein the first direction is the direction in which the first case faces the second case.

[0022] By adopting the technical solution of this embodiment, the second connection portion is completely accommodated in the accommodation notch, so that the second connection portion is less likely to interfere with the second case, which is beneficial to improving the structural strength and assembly efficiency of the battery.

[0023] In some embodiments, second connection portions are connected to opposite sides of the first connection portion, and the two second connection portions are respectively fixedly connected to two oppositely disposed side wall portions.

[0024] By adopting the technical solution of this embodiment, the two second connection portions are respectively connected to the two side wall portions, the connection reliability between the connection member and the case is high, and the structural strength and rigidity of the battery can be better improved.

[0025] In some embodiments, a connection member is provided on the side of the battery cell facing the second case and / or the side facing away from the second case.

[0026] By adopting the technical solution of this embodiment, the position arrangement of the connection member is flexible, which can meet different use requirements.

[0027] In some embodiments, the side wall portion connected to the second connection portion is provided with a mounting structure for realizing the mounting of the battery.

[0028] By adopting the technical solution of this embodiment, the structural strength of the side wall portion provided with the mounting structure is high, the second connection portion is connected to the side wall portion, which can increase the connection strength between the second connection portion and the case, thereby improving the structural strength and rigidity of the battery.

[0029] In some embodiments, the battery cell has a first surface, an electrode terminal is disposed on the first surface, and the first surface is connected to the first connection portion; or the battery cell has a second surface adjacent to the first surface, and the second surface is connected to the first connection portion.

[0030] By adopting the technical solution of this embodiment, the connection position between the first connection portion and the battery cell can be flexibly arranged, which can meet the use needs of different types of batteries.

[0031] In some embodiments, when the first surface is connected to the first connection portion, the first surface is adhered to the first connection portion; when the second surface is connected to the first connection portion, the second surface is adhered to the first connection portion.

[0032] By adopting the technical solution of this embodiment, the battery cell and the first connection portion are adhered by an adhesive, so as to realize the fixed connection between the first connection portion and the battery cell. The fixed connection manner is simple, and the manufacturing efficiency of the battery can be improved.

[0033] In some embodiments, the number of the battery cells is plural, and the plurality of battery cells are arranged in a matrix along a second direction and a third direction, the second direction and the third direction are perpendicular to each other, the first connection portion includes a first connection sub-portion extending along the second direction and a second connection sub-portion extending along the third direction, the first connection sub-portion is fixedly connected to the plurality of battery cells arranged along the second direction, the second connection sub-portion is fixedly connected to the plurality of battery cells arranged along the third direction, and at least one of the first connection sub-portion and the second connection sub-portion is connected to the second connection portion.

[0034] By adopting the technical proposal of this embodiment, the first connection sub-part can fixally connect a plurality of battery cells arranged along the second direction, and the second connection sub-part can fixally connect a plurality of battery cells arranged along the third direction. This enables the fixed connection of the plurality of battery cells in the second and third directions, allowing the plurality of battery cells to be integrally formed and improving the overall rigidity of the battery cells after they are assembled. This improves the overall rigidity of the battery, effectively improves the modality of the battery, allows the battery to avoid the resonant frequency of the entire vehicle, improves the mechanical strength and service life of the battery, and also improves the resistance of the battery cells to expansion deformation because the plurality of battery cells are subject to the limiting effect of the first and second connection sub-parts, which is advantageous in improving the performance of the battery.

[0035] In some embodiments, a first connection sub-compartment is fixedly connected to two adjacent battery cells arranged along a third direction, and / or a second connection sub-compartment is fixedly connected to two adjacent battery cells arranged along a second direction.

[0036] By adopting the technical proposal of this embodiment, the first connection sub-part can fix and connect a plurality of battery cells arranged along two adjacent second directions, thereby improving the connection reliability of the plurality of battery cells arranged along two adjacent second directions, and thereby improving the structural strength and rigidity of the battery. Furthermore, one second connection sub-part can fix a plurality of battery cells arranged along two adjacent third directions, thereby improving the connection reliability of the plurality of battery cells arranged along two adjacent third directions, and thereby improving the structural strength and rigidity of the battery. In addition, the structure of the connection members can be simplified, the manufacturing cost of the connection members can be reduced, and this is also advantageous in improving the manufacturing efficiency of the battery.

[0037] In some embodiments, the first and second connecting sub-parts surround each other to form a housing area, the first connecting part further includes a third connecting sub-part, the third connecting sub-part connects the first and second connecting sub-parts, and the third connecting sub-part is located within the housing area.

[0038] By adopting the technical proposal of this embodiment, the third connection sub-part can improve the connection reliability between the first connection sub-part and the second connection sub-part, thereby improving the structural strength of the connecting member, and further improving the structural strength and rigidity of the battery.

[0039] In some embodiments, the battery cell has electrode terminals, a third connection sub-part is provided with a relief hole for the electrode terminals, a first shut-off part is connected to the third connection sub-part, the first shut-off part protrudes from the surface of the third connection sub-part facing the battery cell, and the first shut-off part is arranged around the relief hole, and / or the battery cell has a pressure release mechanism, a discharge structure is provided to the third connection sub-part, the discharge structure is installed opposite the pressure release mechanism to release the discharge released through the pressure release mechanism, a second shut-off part is connected to the third connection sub-part, the second shut-off part protrudes from the surface of the third connection sub-part facing the battery cell, and the second shut-off part is arranged around the discharge structure.

[0040] By adopting the technical proposal of this embodiment, the installation of the first blocking section can prevent adhesive or solid particles from coming into contact with the electrode terminals, which is advantageous in improving the reliability of the electrical connection between the electrode terminals and the bus member, thereby improving the reliability of the battery's operation. The installation of the second blocking section can prevent adhesive or solid particles from coming into contact with the pressure release mechanism and discharge structure, which is advantageous in improving the smoothness of discharge of waste, thereby improving the reliability of the battery's operation.

[0041] In some embodiments, a first gap is formed between two adjacent battery cells arranged along a third direction, and a first connection sub-part is provided with a third blocking portion protruding from the surface of the first connection sub-part toward the battery cells, the third blocking portion being 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, and a second connection sub-part is provided with a fourth blocking portion protruding from the surface of the second connection sub-part toward the battery cells, the fourth blocking portion being used to block adhesive or solid particles from entering the second gap.

[0042] By adopting the technical proposal of this embodiment, the installation of the third and / or fourth blocking section can reduce the risk of adhesive or solid particles entering the gap between two adjacent battery cells, thereby reducing the risk of damage to the battery cells and improving the reliability and lifespan of the battery.

[0043] In some embodiments, the connecting member is an insulating member, and the battery further includes a bus member for electrically connecting to the electrode terminals of a battery cell, with the first connecting portion of the insulating member provided between the bus member and the battery cell.

[0044] By adopting the technical proposal of this embodiment, the first connection portion of the insulating member is provided between the bus member and the battery cell, insulating the first connection portion from the battery cell, reducing the risk of short circuits in the battery cell, and improving the reliability of the battery. Furthermore, the insulating member located between the bus member and the battery cell in the battery can be directly used as a connecting member, eliminating the need to install additional connecting members, which is advantageous in increasing the compactness of the battery structure and reducing the manufacturing cost of the battery.

[0045] In some embodiments, the connecting member is a heat exchange member for exchanging heat with the battery cell.

[0046] By adopting the technical proposal of this embodiment, the heat exchange component can achieve temperature control of the battery cell, allowing the battery to exhibit relatively good charge and discharge performance. Furthermore, the heat exchange component can be directly used as a connecting component in the battery, eliminating the need to install additional connecting components, which is advantageous in increasing the compactness of the battery structure and reducing the manufacturing cost of the battery.

[0047] In some embodiments, the battery further includes a bus member for electrical connection to battery cells, and a first connection portion of the heat exchange member is provided between the bus member and the battery cells, wherein at least one of the surfaces of the first connection portion of the heat exchange member, which faces the bus member and which faces away from the bus member, is covered with an insulating layer.

[0048] By adopting the technical proposal of this embodiment, an insulating layer is coated on at least one of the surfaces of the first connection portion of the heat exchange member, namely the surface facing the bus member and the surface facing away from the bus member, thereby achieving insulation from the battery cell and / or the bus member. At the same time, the heat exchange member can perform heat exchange with the battery cell and connect the battery cell to the case. Thus, one heat exchange member can perform three functions, reducing the number of battery components, improving structural compactness, improving battery performance, and reducing the manufacturing cost of the battery.

[0049] In some embodiments, the battery further includes a sampling assembly for sampling information from battery cells, the sampling assembly being connected to a connecting member.

[0050] By adopting the technical proposal of this embodiment, the sampling assembly is connected to the connecting member, and the sampling assembly and the connecting member are integrated as a single unit, thereby improving the integration density of the battery and, consequently, improving the performance of the battery.

[0051] In a second embodiment, an electrical device including the battery described in the above embodiment is provided.

[0052] The electrical device of the embodiment of the present invention employs the above-mentioned battery, which has good structural strength and rigidity, and is advantageous in improving the performance of the electrical device.

[0053] In some embodiments, the electrical device is a vehicle, and the battery cell is installed so that the largest surface area faces the vehicle's door.

[0054] By adopting the technical proposal of this embodiment, the largest surface area of ​​the battery cell is positioned to face the vehicle door. When contact with the side pillar or lateral pressure occurs on the vehicle, the deformation is caused by the largest surface area. Since the largest surface area of ​​the battery cell has a much larger tolerance for intrusion than the other surfaces of the battery cell, the risk of a short circuit occurring after the battery cell is deformed by pressure is relatively low, and safety during battery side pillar contact and lateral pressure operations can be greatly improved.

[0055] The above description is merely an outline of the proposed technology. In order to better understand the technical means of this application and to implement them in accordance with the specifications, and to better understand the above and other objectives, features, and advantages of this application, specific embodiments of this application are listed below. [Brief explanation of the drawing]

[0056] To more clearly explain the technical concept in the embodiments of the present application, the following briefly introduces the drawings that may be used to describe the embodiments or the prior art. Clearly, the drawings in the following description are only a few embodiments of the present application, and those skilled in the art can obtain other drawings based on these without any creative work. [Figure 1] This is a schematic diagram of the structure of a vehicle provided by some embodiments of the present application. [Figure 2] This is a schematic diagram of the disassembled structure of a battery provided by some embodiments of the present application. [Figure 3] Figure 2 shows a schematic diagram of the structure after the battery has covered the second case. [Figure 4]This is a cross-sectional view along line AA in Figure 3. [Figure 5] This is a close-up view of area B in Figure 4. [Figure 6] This is a close-up view of location B in Figure 4 of a battery provided in some other embodiments of the present application. [Figure 7] This is a close-up view of location B in Figure 4 of a battery provided by some further embodiments of the present application. [Figure 8] This is a close-up view of location B in Figure 4 of a battery provided by some further embodiments of the present application. [Figure 9] This is a schematic diagram of the structure of a battery cell provided by some embodiments of the present application. [Figure 10] This is a schematic diagram of the structure of a battery cell provided in some other embodiments of the present application. [Figure 11] This is a schematic diagram of the structure after the battery, provided in some other embodiments of the present application, has concealed the second case. [Figure 12] Figure 11 is a schematic diagram of the disassembled structure after the battery has covered the case. [Figure 13] Figure 12 is a schematic diagram of the structure of the connecting member. [Figure 14] This is a schematic diagram of the exploded structure after the battery, provided in some further embodiments of the present application, has been concealed from the case. [Figure 15] Figure 14 is a schematic diagram of the connecting member from one viewing angle. [Figure 16] Figure 14 is a schematic diagram of the connecting member from a different viewing angle. [Figure 17] This is a close-up view of area C in Figure 16. [Modes for carrying out the invention]

[0057] To further clarify the technical problems, technical solutions, and beneficial effects that this application aims to solve, the application will be described in more detail below, in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are merely interpretive and not limiting to this application.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present application. The terms used herein are for illustrative purposes only and not to limit the present application. The terms “including” and “having” and any variations thereof in the description, claims, and brief description of the drawings herein are intended to cover non-exclusive inclusion.

[0059] In the description of the embodiments of this application, technical terms such as “first,” “second,” etc., are merely for distinguishing different subjects and should not be understood as indicating or implying relative importance, or implicitly indicating the quantity, specific order, and priority of the technical features being referred to. Accordingly, features designated as “first,” “second,” etc., may explicitly or implicitly include one or more such features.

[0060] As used herein, “Examples” means that certain features, structures, or properties described in conjunction with the Examples may be included in at least some of the Examples of this Application. Each occurrence of the word in the Specification does not necessarily refer to the same Example, nor do they represent mutually exclusive, independent, or alternative Examples. Those skilled in the art will understand, both explicitly and implicitly, that the Examples described herein may be combined with other Examples in any suitable manner.

[0061] In the description of the embodiments of this application, the term "and / or" simply describes a related relationship that explains the related objects, and indicates that there can be three types of relationships. For example, A and / or B can represent three cases: A existing only, A and B existing simultaneously, and B existing only. In this specification, the symbol " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0062] In the description of the embodiments of this application, the term "multiple" means two or more (including two), similarly, "multiple sets" means two or more sets (including two), and "multiple sheets" means two or more sheets (including two). "Several" means one or more unless otherwise clearly and specifically defined.

[0063] In the description of the embodiments of this application, the orientations or positional relationships indicated by technical terms such as "center," "vertical direction," "horizontal direction," "length," "width," "thickness," "top," "bottom," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," "axial direction," "radial direction," and "circumferential direction" are orientations or positional relationships shown based on the drawings and are merely for the purpose of describing and simplifying the description of the embodiments of this application. They do not indicate or imply that the shown devices or elements necessarily have a specific orientation, are composed of a specific orientation, or must be operated in a specific orientation, and therefore should not be understood as limiting the embodiments of this application.

[0064] In the description of the embodiments of this application, unless otherwise specifically defined and limited, technical terms such as “attachment,” “connection,” “bonding,” and “fixing” should be understood in a broad sense, for example, a fixed connection, a removable connection, or a joint, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, or an internal communication between two elements or an interaction relationship between two elements. A person skilled in the art will understand the specific meaning of the above terms in the embodiments of this application depending on the specific circumstances.

[0065] In the description of embodiments of the present application, unless otherwise explicitly stated or limited, when an element is described as being “fixed” or “installed” to another element, it may be directly located to the other element or indirectly located to the other element. When an element is described as being “connected” to another element, it may be directly connected to the other element or indirectly connected to the other element.

[0066] In this application, the battery cell 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, but the embodiments of this application are not limited thereto. The battery cell may be cylindrical, flattened, rectangular, or have other shapes, but the embodiments of this application are not limited thereto. Generally, battery cells are classified into three types according to their encapsulation method: cylindrical battery cells, prismatic battery cells, and soft-pack battery cells, but the embodiments of this application are not limited thereto.

[0067] The batteries referred to in the embodiments of this application refer to a single physical module containing one or more battery cells to provide higher voltage and capacity. For example, the batteries referred to in this application may include a battery module or a battery pack. The batteries generally include a case for enclosing one or more battery cells. The case can prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0068] A battery cell comprises an electrode assembly and an electrolyte, the electrode assembly consisting of a positive electrode piece, a negative electrode piece, and a separator film. The battery cell functions primarily by relying on the movement of metal ions between the positive and negative electrode pieces. The positive electrode piece includes a positive electrode current collector and a positive electrode active material layer, the positive electrode active material layer being coated on the surface of the positive electrode current collector, and the positive electrode current collector without the positive electrode active material layer protruding from the positive electrode current collector with the positive electrode active material layer being called a positive electrode tab.

[0069] Taking a lithium-ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide. The negative electrode piece includes a negative electrode current collector and a negative electrode active material layer, with the negative electrode active material layer coated on the surface of the negative electrode current collector. Negative electrode current collectors without the negative electrode active material layer protrude from negative electrode current collectors with the negative electrode active material layer, and negative electrode current collectors without the negative electrode active material layer are designated as negative electrode tabs. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, lithium metal, or a lithium alloy. To ensure that a large current can flow without melting, the positive electrode tabs and negative electrode tabs are stacked in multiple layers. The separator film may be made of polypropylene (PP) or polyethylene (PE), etc. Furthermore, the electrode assembly in the embodiments of this application includes, but is not limited to, a wound structure or a stacked structure.

[0070] The battery cell in the embodiment of the present invention further includes an outer casing, the electrode assembly is mounted inside the outer casing, and the electrode assembly is protected by the outer casing.

[0071] An outer casing refers to a casing structure that has an internal space to house and protect the electrode assembly. The outer casing may be manufactured using a material with a certain degree of hardness and strength, so that it is less likely to deform when subjected to pressure or impact, the battery cell can have higher structural strength, and reliability can be improved. The material of the casing may be multiple, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, and plastic.

[0072] Electrode terminals are installed on the outer casing of a battery cell. These electrode terminals refer to conductive members provided on the outer casing and are connected to tabs on the electrode assembly to output electrical energy from the battery cell or to charge the battery cell. A battery cell typically has two electrode terminals, each connected to the positive and negative electrode tabs of the electrode assembly. The electrode terminal connected to the positive electrode tab is the positive electrode terminal, and the electrode terminal connected to the negative electrode tab is the negative electrode terminal. The electrode assembly is connected to the electrode terminals to form a battery cell.

[0073] During charging, the electric current is converted into chemical energy through a chemical reaction between the electrolyte and electrodes and stored in the battery cell. During the discharge process, the chemical energy is converted back into electrical energy and released. This energy conversion process involves energy loss and heat generation. If heat dissipation inside the battery cell is poor, the heat is not effectively released, causing the battery cell to overheat. A certain internal resistance exists inside the battery cell, and resistance loss occurs when the current passes through this internal resistance, causing heat to be generated inside the battery cell. If the current is too large or the internal resistance is too high, the heat generated inside the battery cell becomes excessive, causing the battery cell to overheat. During the charging process of the battery cell, if the voltage exceeds its designed maximum voltage, or during the discharge process, if the voltage of the battery cell is too low, the battery cell will experience overvoltage or overdischarge. Overcharging or overdischarging causes a runaway chemical reaction inside the battery cell, generating excessive heat and causing the battery cell to overheat. Furthermore, defects may exist in the design or manufacturing process of battery cells, such as inappropriate material selection or poor assembly. These defects can lead to poor heat dissipation or uneven current distribution within the battery cell, thereby increasing the risk of overheating or overvoltage. Consequently, battery cells may experience overheating or overvoltage during charging or use.

[0074] A battery cell typically contains a certain amount of gas. When a battery cell is charged or discharged, the solution in the electrolyte triggers gas generation or absorption reactions. The generation of these gases increases the gas pressure inside the battery cell, causing it to expand and deform. During the charging or discharging process, the positive and negative electrode materials undergo chemical reactions to form new compounds. These chemical reactions, along with changes in volume, cause volume changes in the materials inside the battery cell, leading to expansion and deformation. If a battery cell is overcharged or over-discharged, the chemical reactions inside the battery cell can run wild, generating excess gas or causing structural damage to the electrode materials, further leading to expansion and deformation of the battery cell. When a battery cell is charged or discharged in a high-temperature environment, the progress of internal chemical reactions accelerates, increasing gas generation and volume changes. High temperatures further cause expansion of the internal materials of the battery cell, leading to expansion and deformation of the battery cell.

[0075] To reduce the risk of explosion or fire due to overheating or overvoltage of battery cells during charging or use, the battery cell casing is usually equipped with pressure release mechanisms such as explosion-proof valves and explosion-proof sheets. When the temperature or pressure of the battery cell exceeds a safety threshold, these mechanisms release the gas or liquid inside the battery cell, reducing the internal pressure and thus reducing the risk of explosion. This improves the safety performance of the battery cell and reduces potential safety risks.

[0076] Judging from the current market developments, the applications of batteries are expanding more and more. Batteries are not only used in energy storage and power systems such as hydroelectric, thermal, wind, and solar power plants, but also in electric transportation such as electric bicycles, electric motorcycles, and electric vehicles, as well as in multiple fields such as military equipment and aerospace. As the application areas of batteries continue to expand, the market demand for them will also continue to increase.

[0077] With advancements in battery technology, various aspects of battery performance, particularly structural strength—a key factor in battery performance—are continuously being optimized. If a battery's structural strength cannot be guaranteed, its use carries relatively significant risks. Therefore, improving battery structural strength remains a challenge that needs to be addressed.

[0078] Based on this, an embodiment of the present application provides a battery comprising a case, a connecting member, and at least one battery cell, wherein the battery cell is located within the case, and the connecting member comprises a connected first connecting portion and a second connecting portion, the first connecting portion being fixedly connected to the battery cell and the second connecting portion being fixedly connected to the case, thereby enabling the connecting member to stably connect the battery cell and the case, improving the reliability of the connection between the battery cell and the case, thereby improving the structural strength and rigidity of the battery, and improving the reliability and lifespan of the battery.

[0079] The technical invention described in the embodiments of this application is applicable to batteries and electrical devices using batteries.

[0080] Electrical devices may include vehicles, mobile phones, portable devices, laptop computers, ships, aerospace vehicles, electric toys, and power tools. Aerospace vehicles include airplanes, rockets, space shuttles, and spacecraft; electric toys include stationary or mobile electric toys such as game consoles, electric car toys, electric boat toys, and electric airplane toys; and power tools include metal cutting power tools such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, as well as grinding power tools, assembly power tools, and railway power tools. The embodiments of this application do not impose any special limitations on the above-mentioned electrical devices. Batteries may also be energy storage devices. Energy storage devices include energy storage containers, energy storage electrical cabinets, and the like.

[0081] For the sake of explanation, the following embodiments will be described using the example that the electrical device is a vehicle.

[0082] Referring to Figure 1, which is a schematic diagram of the structure of a vehicle 1000 provided by some embodiments of the present application, the vehicle 1000 may be a fuel cell vehicle, a gas vehicle, or a new energy vehicle, the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or a range extender vehicle, etc. A battery 1100 is installed inside the vehicle 1000, and the battery 1100 may be installed at the bottom, head, or tail of the vehicle 1000. The battery 1100 may be used to power the vehicle 1000, for example, the battery 1100 can function as the operating power source for the vehicle 1000. The vehicle 1000 may further include a controller 1200 and a motor 1300, the controller 1200 controlling the battery 1100 to supply power to the motor 1300, and is used, for example, to meet the operating power needs of the vehicle 1000 during starting, navigation, and driving.

[0083] In some embodiments of the present invention, the battery 1100 can not only function as an operating power source for the vehicle 1000, but can also provide driving force to the vehicle 1000 by replacing or partially replacing fuel or natural gas as a driving power source for the vehicle 1000.

[0084] To meet different power consumption needs, the battery 1100 may include multiple battery cells 20, which may be connected in series, in parallel, or in series-parallel, with series-parallel connection referring to a mixture of series and parallel connections. The battery 1100 may also be called a battery pack. Selectively, multiple battery cells 20 may be connected in series, in parallel, or in series-parallel to form a battery module, and multiple battery modules may be further connected in series, in parallel, or in series-parallel to form the battery 1100. In other words, multiple battery cells 20 may directly form the battery 1100, or they may first form battery modules and then further form the battery 1100 with the battery modules.

[0085] Referring to Figure 2, which is a schematic diagram of the exploded structure of a battery 1100 provided by several embodiments of the present application, the battery 1100 has a height direction, a length direction and a width direction, the height direction of the battery 1100 may refer to a first direction Z in the figure, the width direction of the battery 1100 may refer to a second direction X in the figure, and the length direction of the battery 1100 may refer to a third direction Y in the figure. The case 10 limits the external structure of the battery 1100, the height direction of the case 10 may be the height direction of the battery 1100, the length direction of the case 10 is the length direction of the battery 1100, and the width direction of the case 10 is the width direction of the battery 1100.

[0086] A battery 1100 according to some embodiments of the present application includes a case 10, a connecting member 30, and at least one battery cell 20, wherein the at least one battery cell 20 is located inside the case 10, and the connecting member 30 includes a connected first connecting portion 31 and a second connecting portion 32, wherein 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.

[0087] The case 10 can refer to a component that provides an environment for mounting the battery cell 20, and the inside of the case 10 has a hollow structure, with the battery cell 20 housed inside the case 10.

[0088] The connecting member 30 can refer to a member for connecting the battery cell 20 and the case 10, and the connecting member 30 includes a first connecting portion 31 and a second connecting portion 32, the first connecting portion 31 can refer to the portion of the connecting member 30 that is fixedly connected to the battery cell 20, and the second connecting portion 32 can refer to the portion of the connecting member 30 that is fixedly connected to the case 10. The first connecting portion 31 and the second connecting portion 32 can be installed on the same plane. In some embodiments, the first connecting portion 31 and the second connecting portion 32 may be a single unit, i.e., a single molded structure, and selectively, the first connecting portion 31 and the second connecting portion 32 may be two separate parts that are connected to each other by a connecting structure such as screw fastening, locking, or adhesive.

[0089] If there are multiple battery cells 20, some of the battery cells 20 may be connected to the first connection part 31, or all of the battery cells 20 may be connected to the first connection part 31. The connection method between the battery cells 20 and the first connection part 31 can refer to a fixed connection method such as screwing, locking, or adhesive, and the connection method between the second connection part 32 and the case 10 may also refer to a fixed connection method such as screwing, locking, or adhesive.

[0090] An embodiment of the present invention relates to a battery 1100, which includes a case 10, a connecting member 30, and at least one battery cell 20, wherein the battery cell 20 is located inside the case 10, and the connecting member 30 includes a connected first connecting portion 31 and a second connecting portion 32, the first connecting portion 31 being fixedly connected to the battery cell 20 and the second connecting portion 32 being fixedly connected to the case 10, thereby enabling the connecting member 30 to stably connect the battery cell 20 and the case 10, improving the reliability of the connection between 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.

[0091] In some embodiments, the case 10 includes a first case 11 and a second case 12, the first case 11 comprising a housing cavity 113 having an opening, the battery cell 20 being located within the housing cavity 113, the second case 12 covering the opening of the housing cavity 113, and at least one of the first case 11 and the second case 12 being fixedly connected to a second connection portion 32.

[0092] Case 10 may include two parts, one of which is a first case 11 and the other being a second case 12, where the first case 11 forms a housing cavity 113 having an opening, which is used to house battery cells 20, and the second case 12 covers the opening of the housing cavity 113 to seal the opening of the housing cavity 113, and the shapes of the first case 11 and the second case 12 can be determined according to the shape and arrangement of the battery cells 20 in case 10. In some embodiments, both the first case 11 and the second case 12 may be hollow rectangular parallelepipeds having an opening, and the openings of the first case 11 and the second case 12 engage relative to each other to seal the opening of the housing cavity 113. In some embodiments, the second case 12 is plate-shaped and covers the opening of the first case 11, thereby sealing the opening of the housing cavity 113.

[0093] It should be understood that at least one of the first case 11 and the second case 12 is fixedly connected to the second connection part 32, or the first case 11 is fixedly connected to the second connection part 32, or the second connection part 32 is fixedly connected to both the first case 11 and the second case 12 simultaneously.

[0094] By adopting the technical proposal of this embodiment, the second case 12 can seal the opening of the housing cavity 113, improving the protective effect of the case 10 on the battery cell 20, thereby improving the reliability of the battery 1100. Furthermore, the connection position between the second connection part 32 and the case 10 is flexible and diverse, and processing and manufacturing are simple.

[0095] Refer to Figures 3 to 5 in conjunction with this. Figure 3 is a schematic diagram of the structure after the battery 1100 shown in Figure 2 has covered the second case 12. Figure 4 is a cross-sectional view along line AA in Figure 3. Figure 5 is a localized enlarged view of location B in Figure 4.

[0096] In some embodiments, when the first case 11 is fixedly connected to the second connection 32, the first case 11 includes a plurality of side wall portions 111 for connection to the second case 12, the plurality of side wall portions 111 are connected and surround to form a housing cavity 113, of which at least one side wall portion 111 is fixedly connected to the second connection 32.

[0097] The side wall portion 111 can refer to the portion of the first case 11 connected to the second case 12, the first case 11 includes a plurality of side wall portions 111, the plurality of side wall portions 111 are connected in order to surround the side of the first case 11, and each side wall portion 111 forms a side wall of the housing cavity 113 of the first case 11. The plurality of side wall portions 111 can be connected in order to form a sealed frame structure, the hollow cavity formed by surrounding this frame structure is the housing cavity 113, and the second case 12 is fitted to cover one opening of the hollow cavity so as to form a sealed housing cavity 113, and the base plate 112 is fitted to cover the other opening, and the shape of the frame structure can be adapted to the shape and arrangement of the battery cells 20. The side wall portion 111 may have an internal hollow structure, a plate-like structure, or a solid structure. If the second case 12 is a metal plate case, the side wall portion 111 may be a plate-like structure on the side of the second case 12, and if the second case 12 is a frame type case, the side wall portion 111 may be an edge beam of the second case 12.

[0098] It should be understood that at least one side wall portion 111 is fixedly connected to the second connecting portion 32, and the second connecting portion 32 may be fixedly connected to multiple side wall portions 111 simultaneously, or to just one side wall portion 111.

[0099] The second case 12 has a high structural strength in the side wall portion 111, and the second connection portion 32 is connected to the side wall portion 111, which increases the connection strength between the second connection portion 32 and the case 10, thereby improving the structural strength and rigidity of the battery 1100.

[0100] In some embodiments, the second connecting portion 32 is bonded to the side wall portion 111.

[0101] It should be understood that the second connection portion 32 and the side wall portion 111 are bonded together by an adhesive 53. The adhesive 53 may be a structural adhesive, which refers to an adhesive having relatively high strength, weather resistance, and aging resistance, and is mainly used for fixing and connecting various materials to enhance the stability and integrity of the structure. The adhesive 53 may be, but is not limited to, an epoxy resin adhesive, silicone rubber, polyurethane adhesive, acrylate adhesive, or polyvinyl acetal adhesive.

[0102] The second connection portion 32 and the side wall portion 111 are connected by adhesive, which makes the connection operation simple and is advantageous in improving the manufacturing efficiency of the battery 1100.

[0103] Refer in conjunction with Figures 6-8, where Figure 6 is a close-up view of area B in Figure 4 of the battery 1100 provided in some other embodiments of the present application. Figure 7 is a close-up view of area B in Figure 4 of the battery 1100 provided in some further embodiments of the present application. Figure 8 is a close-up view of area B in Figure 4 of the battery 1100 provided in some further embodiments of the present application.

[0104] In some embodiments, the battery 1100 further includes a fastening member 40, the second connection portion 32 having a first connection hole 321, the side wall portion 111 having a second connection hole 1111, and the fastening member 40 is drilled in the first connection hole 321 and the second connection hole 1111 so as to fix the second connection portion 32 and the side wall portion 111.

[0105] The fastening member 40 can refer to a member for fixing two or more members together, and the fastening member 40 can prevent relative movement between two members or secure the members in a specific position. The fastening member 40 may be, but is not limited to, a bolt, screw, rivet, etc.

[0106] The first connection hole 321 can refer to a communication hole provided in the second connection portion 32 for passing through a fastening member 40, and the second connection hole 1111 can refer to a communication hole provided in the side wall portion 111 for drilling a fastening member 40. After the fastening member 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 can be fixedly connected. The number of fastening members 40 may be one or more, and if there are multiple fastening members 40, the multiple fastening members 40 may be distributed along the length direction of the side wall portion 111 to improve the connection reliability between the second connection portion 32 and the side wall portion 111.

[0107] The fastening member 40 is used to fix the second connection portion 32 and the side wall portion 111, which provides high connection reliability of the fastening member 40, is advantageous in improving the structural strength and rigidity of the battery 1100, and the connection operation of the fastening member 40 is simple, which can improve the manufacturing efficiency of the battery 1100.

[0108] In some embodiments, the fastening member 40 is a rivet 41, which penetrates the first connection hole 321 and the second connection hole 1111, thereby fixing and connecting the second connection portion 32 and the side wall portion 111.

[0109] In some embodiments, the fastening member 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. In some embodiments, the bolt 42 may be a rivet bolt.

[0110] In some embodiments, the fastening member 40 is a rivet 41, which penetrates the first connection hole 321 and the second connection hole 1111, and an adhesive 53 is filled between the rivet cap of the rivet 41 and the second connection portion 32, thereby improving the reliability of the fixed connection between the second connection portion 32 and the side wall portion 111, and thereby improving the structural strength of the battery 1100.

[0111] In some embodiments, in the first direction Z, the fastening member 40 does not protrude from the end face of the side wall portion 111 toward the second case 12, and the first direction Z is the direction toward the second case 12 of the first case 11.

[0112] It should be understood that the end face of the fastening member 40 facing the second case 12 is flush with the end face of the side wall portion 111 facing the second case 12, or that the end face of the fastening member 40 facing the second case 12 is lower than the end face of the side wall portion 111 facing the second case 12.

[0113] The fastening member 40 does not protrude from the end face of the side wall portion 111 facing the second case 12, and the fastening member 40 is less likely to interfere with the second case 12, which is advantageous in improving the structural strength and assembly efficiency of the battery 1100.

[0114] In some embodiments, a housing notch 1112 is provided at the end of the side wall portion 111 facing the second case 12, and the second connecting portion 32 is fixed within the housing notch 1112.

[0115] The accommodation notch 1112 can refer to a notch structure formed in the side wall portion 111 for accommodating the second connection portion 32. The surface of the side wall portion 111 facing the second case 12 faces away from the accommodation notch 1112 formed by the recess of the second case 12, and the accommodation notch 1112 communicates with the accommodation cavity 113, thereby facilitating the accommodation of the second connection portion 32.

[0116] Since the second connection portion 32 is housed within the housing notch 1112, the risk of interference between the second connection portion 32 and the second case 12 can be reduced, which is advantageous in improving the structural strength and assembly efficiency of the battery 1100.

[0117] In some embodiments, in the first direction Z, the second connecting portion 32 does not protrude from the end face of the side wall portion 111 toward the second case 12, and the first direction Z is the direction toward the second case 12 of the first case 11.

[0118] It should be understood that the second connecting portion 32 is fully housed in the housing notch 1112 and does not protrude from the housing notch 1112, and the end face of the second connecting portion 32 facing the second case 12 is flush with the end face of the side wall portion 111 facing the second case 12, or that the end face of the second connecting portion 32 facing the second case 12 is lower than the end face of the side wall portion 111 facing the second case 12.

[0119] Since the second connection portion 32 is completely housed within the housing notch 1112, the second connection portion 32 is less likely to interfere with the second case 12, which is advantageous in improving the structural strength and assembly efficiency of the battery 1100.

[0120] In some embodiments, the second connector 32 is supported by the wall surface of the housing notch 1112 facing the second case 12, and the second connector 32 is also adhered to the wall surface of the housing notch 1112 facing the second case 12 by an adhesive 53.

[0121] In some embodiments, a second connection hole 1111 is provided on the wall surface of the housing notch 1112 facing the second case 12, and the fastening member 40 passes through the first connection hole 321 and the second connection hole 1111 in sequence, thereby fixing the second connection portion 32 to the side wall portion 111, and the end of the fastening member 40 facing the second case 12 is also housed in the housing notch 1112 and does not protrude from the end face of the side wall portion 111 facing the second case 12.

[0122] In some embodiments, second connecting portions 32 are connected to opposing sides of the first connecting portion 31, and the two second connecting portions 32 are fixedly connected to two opposing side wall portions 111, respectively.

[0123] It should be understood that there are two second connection parts 32, and that the two second connection parts 32 are connected to opposite sides of the first connection part 31, and that the two second connection parts 32 are fixedly connected to the corresponding side wall parts 111.

[0124] As an example, there are four side wall portions 111, of which two side wall portions 111 extend along the length direction of the battery 1100 and are spaced apart along the width direction of the battery 1100, and the other two side wall portions 111 extend along the width direction of the battery 1100 and along the length direction of the battery 1100, and the four side wall portions 111 surround the battery 1100 and form a rectangular frame structure. There are two second connection portions 32, and the two second connection portions 32 are located on opposite sides of the first connection portion 31 along the second direction X, and the two side wall portions 111 distributed spaced apart along the second direction X are fixedly connected to the two second connection portions 32. Of course, in other embodiments, the second connection portions 32 may be fixedly connected in a one-to-one correspondence with the side wall portions 111.

[0125] Each of the two second connection parts 32 is connected to the two side wall parts 111, resulting in high reliability of the connection between the connection member 30 and the case 10, and further improving the structural strength and rigidity of the battery 1100.

[0126] In some embodiments, a mounting structure 1113 for mounting the battery 1100 is provided on the side wall portion 111 connected to the second connection portion 32.

[0127] The side wall portion 111 on which the mounting structure 1113 is provided is connected to the second connection portion 32, and the mounting structure 1113 can refer to the part of the battery 1100 for fixing to the vehicle 1000, and the structure can refer to the mounting beam installed on the side wall portion 111, and the mounting beam may be an integrally molded structure with the side wall portion 111 or a separately molded structure, and it should be understood that the mounting beam is connected to the side wall portion 111 via the connection structure.

[0128] By adopting the technical proposal of this embodiment, the structural strength of the side wall portion 111 on which the mounting structure 1113 is provided is increased, the second connection portion 32 is connected to the side wall portion 111, and the connection strength between the second connection portion 32 and the case 10 can be increased, thereby improving the structural strength and rigidity of the battery 1100.

[0129] In some embodiments, a connecting member 30 is provided on the side of the battery cell 20 facing the second case 12 and / or on the side facing away from the second case 12.

[0130] It should be understood that the connection member 30 is provided on the side of the battery cell 20 facing the second case 12, and the connection member 30 is located between the second case 12 and the battery cell 20, or the connection member 30 is provided on the side of the battery cell 20 facing away from the second case 12, and the battery cell 20 is located between the second case 12 and the connection member 30, or the connection member 30 is provided on both the side of the battery cell 20 facing the second case 12 and the side facing away from the second case 12, and the connection member 30 is provided on both opposing sides of the battery cell 20, and the battery cell 20 is located between the two connection members 30, resulting in higher connection reliability between the battery cell 20 and the case 10 and higher structural strength of the battery 1100.

[0131] In some embodiments, when the second case 12 is located above the first case 11, the connecting member 30 may be located above the battery cell 20, below the battery cell 20, or the connecting member 30 may be provided on both the upper and lower sides of the battery cell 20.

[0132] The positioning of the connecting member 30 is flexible, allowing it to meet different usage needs.

[0133] Refer in conjunction with 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. Figure 10 is a schematic diagram of the structure of a battery cell 20 provided in some other embodiments of the present application.

[0134] For the sake of ease of understanding and explanation, the embodiments provided herein will be described using only rectangular parallelepiped-shaped battery cells 20. It should be understood that the embodiments provided herein are also applicable to cylindrical battery cells or soft pack battery cells, and are not limited to these.

[0135] The battery cell 20 has a height direction, a length direction, and a width direction. The height direction of the battery cell 20 may be parallel to the first direction Z, the width direction of the battery cell 20 may be parallel to the second direction X, and the length direction of the battery cell 20 may be parallel to the third direction Y. The battery cell 20 is laid out in this way within the case 10, which allows for favorable use of the internal space of the case 10 and is convenient for mounting other components. Of course, in other embodiments, the battery cell 20 may employ other layout methods.

[0136] As shown in Figures 9 and 10, the battery cell 20 includes two first sides 26 distributed along its height, with the distance between the two first sides 26 defining the height of the battery cell 20. The battery cell 20 further includes two second sides 27 distributed along its length, with the two second sides 27 defining the length of the battery cell 20. The battery cell 20 further includes two third sides 28 distributed along its width, with the two third sides 28 defining the width of the battery cell 20. In a flattened, for example, rectangular battery cell 20, its width is smaller than its length and height, and the area of ​​its third sides 28 is the largest; therefore, the third sides 28 are also called the large sides.

[0137] In some embodiments, the battery cell 20 has a first surface 21 on which electrode terminals 23 are provided, and the first surface 21 is connected to a first connection portion 31, or 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 connection portion 31.

[0138] The first surface 21 can refer to the surface on which the electrode terminals 23 of the battery cell 20 are provided. For example, in the battery cell 20 shown in Figure 9, the electrode terminals 23 are 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 be another side surface of the battery cell 20, for example, the second side surface 27 or the third side surface 28.

[0139] The second surface 22 can refer to a surface on the battery cell 20 adjacent to the first surface 21. For example, in the battery cell 20 shown in Figure 10, the electrode terminals 23 are located 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. Of course, in other examples, the second surface 22 may be any other side of the battery cell 20.

[0140] In one possible embodiment, the battery cell 20 has a first surface 21 on which electrode terminals 23 are provided, and the first surface 21 is connected to a first connection portion 31. As shown in Figures 2 and 9, after a plurality of battery cells 20 are assembled to form a battery module, the prismatic battery cell in particular has a large surface area on which the first surface 21 of the battery module is located, and a large connection area between the first connection portion 31 and the first surface 21 of the battery cell 20, resulting in high connection reliability and advantages in improving the structural strength and rigidity of the battery 1100.

[0141] In another possible embodiment, the battery cell 20 has a first surface 21 on which electrode terminals 23 are provided, and the first surface 21 is connected to a first connector 31. The battery cell 20 also has a second surface 22 adjacent to the first surface 21, and the second surface 22 is connected to the first connector 31. As shown in Figures 2 and 10, after a plurality of battery cells 20 are assembled to form a battery module, the blade battery cell in particular has a large surface area on which the second surface 22 of the battery module is located, and a large connection area between the first connector 31 and the second surface 22 of the battery cell 20, resulting in high connection reliability and advantages in improving the structural strength and rigidity of the battery 1100.

[0142] The first connection section 31 allows for flexible positioning of the connection to the battery cell 20 to meet the usage needs of different types of batteries 1100.

[0143] In some embodiments, when the first surface 21 is connected to the first connecting portion 31, the first surface 21 is bonded to the first connecting portion 31.

[0144] The first surface 21 and the first connection portion 31 are bonded together by an adhesive, thereby achieving a fixed connection between the first connection portion 31 and the battery cell 20. It should be understood that this fixed connection method is simple and can improve the manufacturing efficiency of the battery 1100.

[0145] 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.

[0146] The second surface 22 and the first connecting portion 31 are bonded together with an adhesive, thereby achieving a fixed connection between the first connecting portion 31 and the battery cell 20. It should be understood that this fixed connection method is simple and can improve the manufacturing efficiency of the battery 1100.

[0147] Refer to Figures 11-13 in conjunction with Figure 11, where Figure 11 is a schematic diagram of the structure of the battery 1100 provided in some other embodiments of the present application after concealing the second case 12. Figure 12 is a schematic diagram of the exploded structure of the battery 1100 shown in Figure 11 after concealing the case 10. Figure 13 is a schematic diagram of the structure of the connecting member 30 shown in Figure 12.

[0148] In some embodiments, the number of battery cells 20 is multiple, and the multiple battery cells 20 are arranged in a matrix along a second direction X and a third direction Y, the second direction X and the third direction Y are perpendicular, and the first connection portion 31 includes a first connection sub-port 311 extending along the second direction X and a second connection sub-port 312 extending along the third direction Y, the first connection sub-port 311 being fixedly connected to the multiple battery cells 20 arranged along the second direction X, and the second connection sub-port 312 being fixedly connected to the multiple battery cells 20 arranged along the third direction Y, and at least one of the first connection sub-port 311 and the second connection sub-port 312 being connected to the second connection portion 32.

[0149] It should be understood that there may be multiple battery cells 20, and these multiple battery cells 20 are arranged in a matrix along a second direction X and a third direction Y, where the second direction X and the third direction Y are perpendicular, and the multiple battery cells 20 may be arranged in multiple columns of battery cells 20, and the multiple columns of battery cells 20 may be arranged sequentially along the third direction Y, and the multiple battery cells 20 in each column of battery cells 20 may be arranged sequentially along the second direction X.

[0150] The first connecting sub-part 311 may refer to a portion of the first connecting sub-part 31 that extends along a second direction X, and the second connecting sub-part 312 may refer to a portion of the first connecting sub-part 31 that extends along a third direction Y. The first connecting sub-part 311 and the second connecting sub-part 312 may be a single unit, i.e., a single-piece molded structure, or selectively, the first connecting sub-part 311 and the second connecting sub-part 312 may be two separate members connected to each other by a connecting structure.

[0151] In some embodiments, the first connection portion 31 includes at least one first connection sub-part 311 and at least one second connection sub-part 312, wherein at least one first connection sub-part 311 is fixedly connected to a set of multiple battery cells 20 arranged along a second direction X, and at least one second connection sub-part 312 is fixedly connected to a set of multiple battery cells 20 arranged along a third direction Y. For example, the first connection portion 31 includes a plurality of first connection sub-parts 311 and a plurality of second connection sub-parts 312, wherein the plurality of first connection sub-parts 311 and a plurality of second connection sub-parts 312 form a mesh structure, wherein the plurality of first connection sub-parts 311 are fixedly connected to a plurality of sets of battery cells 20 arranged along a second direction X, and the plurality of second connection sub-parts 312 are fixedly connected to a plurality of sets of battery cells 20 arranged along a third direction Y.

[0152] It should be understood that at least one of the first connection sub-part 311 and the second connection sub-part 312 is connected to the second connection sub-part 32, or the second connection sub-part 32 is connected to the first connection sub-part 311, or the second connection sub-part 32 is connected to the second connection sub-part 312, or both the first connection sub-part 311 and the third connection sub-part 313 are connected to the second connection sub-part 312.

[0153] If there are multiple first connection sub-parts 311 and a second connection part 32 is connected to a first connection sub-part 311, then the second connection part 32 may be connected to some of the first connection sub-parts 311, or all of the first connection sub-parts 311 may be connected to the second connection sub-part 312, and among these, the second connection part 32 may be connected to one end of the first connection sub-part 311 along the second direction X, or the second connection part 32 may be connected to both ends of the first connection sub-part 311 along the second direction X. Similarly, if there are multiple second connection sub-parts 312 and a second connection part 32 is connected to each second connection sub-part 312, the second connection part 32 may be connected to some of the second connection sub-parts 312, or all of the second connection sub-parts 312 may be connected, or the second connection part 32 may be connected to one end of the second connection sub-part 312 along the third direction Y, or the second connection part 32 may be connected to both ends of the second connection sub-part 312 along the third direction Y.

[0154] As an example, there are two first connecting sub-parts 311 and seven second connecting sub-parts 312, 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 each have a second connecting part 32 connected to both ends along the second direction X, the first connecting sub-parts 311 and the second connecting part 32 are integrally molded structures, and the seven second connecting sub-parts 312 are not connected to the second connecting part 32.

[0155] The first connection sub-part 311 can fixally connect a plurality of battery cells 20 arranged along the second direction X, and the second connection sub-part 312 can fixally connect a plurality of battery cells 20 arranged along the third direction Y. This enables the fixed connection of the plurality of battery cells 20 in the second direction X and the third direction Y, allowing the plurality of battery cells 20 to be integrally formed and improving the overall rigidity of the battery cells 20 after they are assembled. This improves the overall rigidity of the battery 1100, effectively improves the modality of the battery 1100, allows the battery 1100 to avoid the resonant frequency of the entire vehicle, improves the mechanical strength and service life of the battery 1100, and also improves the resistance of the battery cells 20 to expansion deformation because the plurality of battery cells 20 are subject to the limiting effect of the first connection sub-part 311 and the second connection sub-part 312, which is advantageous in improving the performance of the battery 1100.

[0156] In some embodiments, a first connection sub-part 311 is fixedly connected to two adjacent battery cells 20 arranged along a third direction Y, and / or a second connection sub-part 312 is fixedly connected to two adjacent battery cells 20 arranged along a second direction X.

[0157] In one possible embodiment, the first connection sub-part 311 is fixedly connected to two adjacent battery cells 20 arranged along a third direction Y, thereby allowing one first connection sub-part 311 to fixly connect two adjacent sets of battery cells 20 arranged along a second direction X, improving the connection reliability of the two adjacent sets of battery cells 20 arranged along the second direction X, thereby improving the structural strength and rigidity of the battery 1100, simplifying the structure of the connecting member 30, which is also advantageous in reducing the manufacturing cost of the connecting member 30 and improving the manufacturing efficiency of the battery 1100. In this case, the first connection sub-part 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 set of battery cells 20 arranged along the second direction X can each be connected corresponding to one first connection sub-part 311.

[0158] In one possible embodiment, the second connection sub-part 312 is fixedly connected to two adjacent battery cells 20 arranged along a second direction X, and one second connection sub-part 312 can fix two adjacent sets of multiple battery cells 20 arranged along a third direction Y, thereby improving the connection reliability of the two adjacent sets of multiple battery cells 20 arranged along the third direction Y, thereby improving the structural strength and rigidity of the battery 1100, simplifying the structure of the connecting member 30, which is also advantageous in reducing the manufacturing cost of the connecting member 30 and improving the manufacturing efficiency of the battery 1100, and in this case, the second connection sub-part 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 set of multiple battery cells 20 arranged along the third direction Y can each be connected corresponding to one second connection sub-part 312.

[0159] In one possible embodiment, a first connection sub-part 311 is fixedly connected to two adjacent battery cells 20 arranged along a third direction Y, and a second connection sub-part 312 is fixedly connected to two adjacent battery cells 20 arranged along a second direction X, thereby allowing one first connection sub-part 311 to be fixedly connected to two adjacent sets of multiple battery cells 20 arranged along a second direction X, and allowing one second connection sub-part 312 to fix two adjacent sets of multiple battery cells 20 arranged along a 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.

[0160] The installation of the first connection sub-part 311 and / or the second connection sub-part 312 improves the structural strength of the multiple battery cells 20, thereby improving the structural strength and rigidity of the battery 1100. It also simplifies the structure of the connecting member 30, reduces the manufacturing cost of the connecting member 30, and is advantageous in improving the manufacturing efficiency of the battery 1100.

[0161] Refer in conjunction with Figures 14-17, where Figure 14 is a schematic diagram of the exploded structure after the battery 1100, provided in some further embodiments of the present application, has concealed the case 10. Figure 15 is a schematic diagram of the structure of the connecting member 30 shown in Figure 14 from one viewpoint. Figure 16 is a schematic diagram of the structure of the connecting member 30 shown in Figure 14 from another viewpoint. Figure 17 is a close-up view of location C in Figure 16.

[0162] In some embodiments, the first connecting sub-part 311 and the second connecting sub-part 312 surround each other to form a accommodating area 314, the first connecting sub-part 31 further includes a third connecting sub-part 313, the third connecting sub-part 313 connects the first connecting sub-part 311 and the second connecting sub-part 312, and the third connecting sub-part 313 is located within the accommodating area 314.

[0163] The first connecting sub-part 311 extends along the second direction X, and the second connecting sub-part 312 extends along the third direction Y. The first connecting sub-part 311 and the second connecting sub-part 312 are connected to each other to form a mesh structure. The hollow region within the mesh structure is the accommodating region 314, and the structure that fills this hollow region is the third connecting sub-part 313. The first connecting sub-part 311, the second connecting sub-part 312, and the third connecting sub-part 313 can be formed into plate-like structures. Of these, the third connecting sub-part 313 can completely fill the accommodating region 314, or it can fill only a portion of the accommodating region 314.

[0164] At least one end of the third connecting sub-part 313 along the second direction X is connected to the second connecting sub-part 312, and at least one end of the third connecting sub-part 313 along the third direction Y is connected to the first connecting sub-part 311. The first connecting sub-part 311, the second connecting sub-part 312, and the third connecting sub-part 313 may be integrally molded structures.

[0165] The third connection sub-part 313 can improve the connection reliability between the first connection sub-part 311 and the second connection sub-part 312, thereby improving the structural strength of the connecting member 30, and further improving the structural strength and rigidity of the battery 1100.

[0166] In some embodiments, the structural strength of the connecting member 30 is improved by installing reinforcing ribs 3133 on the third connecting sub-part 313, thereby improving the structural strength and rigidity of the battery 1100.

[0167] In some embodiments, the battery cell 20 has electrode terminals 23, a third connection sub-part 313 is provided with a relief hole 3131 for escaping the electrode terminals 23, a first shut-off part 3134 is connected to the third connection sub-part 313, the first shut-off part 3134 protrudes from the surface of the third connection sub-part 313 facing the battery cell 20, the first shut-off part 3134 is circumferentially arranged around the relief hole 3131, and / or the battery cell 20 is a pressure release device The structure 24 is provided, and a discharge structure 3132 is provided in the third connection sub-part 313, and the discharge structure 3132 is installed facing the pressure release mechanism 24, and discharges released via the pressure release mechanism 24, and a second shut-off part 3135 is connected to the third connection sub-part 313, and the second shut-off part 3135 protrudes from the surface of the third connection sub-part 313 facing the battery cell 20, and the second shut-off part 3135 is provided around the discharge structure 3132.

[0168] The relief hole 3131 can point to a communication hole through which the third connection sub-part 313 escapes the electrode terminal 23. The relief hole 3131 penetrates the third connection sub-part 313, allowing the electrode terminal 23 to pass through the relief hole 3131, thus facilitating the electrical connection between the electrode terminal 23 and the bus member 51.

[0169] The first interruption portion 3134 can refer to a protruding structure in the third connection sub-part 313 that extends toward the battery cell 20, and the first interruption portion 3134 is an annular structure and is provided around the relief hole 3131. In some embodiments, the first interruption portion 3134 extends along the periphery of the relief hole 3131 so as to surround the relief hole 3131. In some embodiments, the side wall of the inner ring of the first interruption portion 3134 may be coplanar with the hole wall of the relief hole 3131. In some embodiments, the first blocking portion 3134 may be integrally molded with the third connecting sub-port 313, the first blocking portion 3134 may be a separate component, and the first blocking portion 3134 may be fixed to the third connecting sub-port 313 by methods such as screwing, locking, or bonding. For example, the first blocking portion 3134 may be a sealing strip.

[0170] The pressure release mechanism 24 refers to an element or component that operates to release internal pressure when the internal pressure or temperature of the battery cell 20 reaches a predetermined threshold. "Operation" refers to the pressure release mechanism 24 acting, thereby releasing the internal pressure and temperature of the battery cell 20. The actions performed by the pressure release mechanism 24 include, but are not limited to, the rupture, tearing, or melting of at least a portion of the mechanism. After operation, the pressure release mechanism 24 discharges the high-temperature, high-pressure material inside the battery cell 20 as waste. The predetermined threshold may be adjusted according to design needs. The predetermined threshold may depend on one or more materials in the battery cell 20, including the positive electrode piece, negative electrode piece, electrolyte, and separator film. The pressure release mechanism 24 may employ pressure-sensitive or temperature-sensitive elements or components; that is, when the internal pressure or temperature of the battery cell 20 reaches a predetermined threshold, the pressure release mechanism 24 operates, thereby creating a passage for releasing the internal pressure. Emissions from the battery cell 20 include, but are not limited to, electrolyte, dissolved or fragmented positive and negative electrode pieces, separator film fragments, high-temperature and high-pressure gases from the reaction, and flames.

[0171] The discharge structure 3132 can refer to a member provided in the third connecting sub-part 313 for releasing the discharged material released by the pressure release mechanism. The discharge structure 3132 is installed opposite the pressure release mechanism 24, and after the pressure release mechanism 24 is activated, the discharge structure 3132 can form a passage, and the discharged material released by the pressure release mechanism 24 can pass through the third connecting sub-part 313 via this passage, thereby achieving the release of the discharged material. In some embodiments, the discharge structure 3132 may be a discharge hole 31321 that passes through the third connecting sub-part 313, thereby allowing the discharged material to be discharged directly from within the discharge hole 31321. In some embodiments, the discharge structure 3132 may be a fragile structure installed in the third connection sub-part 313, and after the pressure release mechanism 24 is activated, the discharge penetrates the fragile structure, thereby achieving the release of the discharge, and the fragile structure may refer to a member that weakens the structural strength, such as abrasions, grooves, or connecting holes, and in some embodiments, the discharge structure 3132 may be an explosion-proof valve installed in the third connection sub-part 313, and after the pressure release mechanism 24 is activated, the discharge drives the explosion-proof valve to open, thereby achieving the release of the discharge.

[0172] The second shut-off portion 3135 can refer to a protruding structure in the third connection sub-part 313 that extends toward the battery cell 20, and the second shut-off portion 3135 is an annular structure and is provided around the discharge structure 3132. In some embodiments, the second shut-off portion 3135 extends along the periphery of the pressure release mechanism 24 so as to surround the discharge structure 3132. In some embodiments, the side wall of the inner ring of the second shut-off portion 3135 may be coplanar with the periphery of the discharge structure 3132. For example, if the discharge structure 3132 is a communication hole, the side wall of the inner ring of the second shut-off portion 3135 is coplanar with the hole wall of the communication hole. In some embodiments, the second blocking portion 3135 may be integrally molded with the third connecting sub-port 313, or the second blocking portion 3135 may be a separate component, and the second blocking portion 3135 may be fixed to the third connecting sub-port 313 by methods such as screwing, locking, or bonding, and for example the second blocking portion 3135 may be a sealing strip or the like.

[0173] In some cases, an adhesive is applied to the surface of the battery cell 20 facing the connecting member 30, and the battery cell 20 adheres to the third connecting sub-part 313 via the adhesive, thereby achieving a fixed connection between the third connecting sub-part 313 and the battery cell 20. During the process of the third connecting sub-part 313 adhering to the battery cell 20, the adhesive easily overflows onto the electrode terminals 23, the pressure release mechanism 24, and the discharge structure 3132. The adhesive overflows onto the electrode terminals 23, affecting the electrical connection between the electrode terminals 23 and the bus member 51, thus affecting the reliability of the battery cell 20. The adhesive overflows onto the pressure release mechanism 24 and the discharge structure 3132, affecting the operation of the pressure release mechanism 24 and the discharge structure 3132, thereby affecting the discharge of waste and affecting the reliability of the battery 1100. In some cases, during the manufacturing process of the battery 1100, some solid particles (e.g., metal particles) may fall onto the surface of the battery cell 20 facing the insulating member 30, and these solid particles may move to the electrode terminals 23, the pressure release mechanism 24, and the discharge structure 3132, affecting the electrical connection between the electrode terminals 23 and the bus member 51 or the operation of the pressure release mechanism 24 and the discharge structure 3132, affecting the reliability of the battery cell 20 and further affecting the reliability of the battery 1100.

[0174] In one possible embodiment, the battery cell 20 has electrode terminals 23, a third connection sub-part 313 is provided with a relief hole 3131 for the electrode terminals 23, a first blocking part 3134 is connected to the third connection sub-part 313, the first blocking part 3134 protrudes from the surface of the third connection sub-part 313 facing the battery cell 20, the first blocking part 3134 is circumferentially provided around the relief hole 3131, and the first blocking part 3134 can block adhesive or solid particles between the battery cell 20 and the third connection sub-part 313 from coming into contact with the electrode terminals 23, thereby reducing the influence of adhesive or solid particles on the electrical connection between the electrode terminals 23 and the bus member 51, improving the reliability of the connection between the electrode terminals 23 and the bus member 51, and improving the reliability of the battery 1100 in use.

[0175] In another possible embodiment, the battery cell 20 has a pressure release mechanism 24, and a discharge structure 3132 is provided on the third connection sub-part 313, the discharge structure 3132 is positioned opposite the pressure release mechanism 24 to release the discharge released through the pressure release mechanism 24, and a second shut-off part 3135 is connected to the third connection sub-part 313, the second shut-off part 3135 protrudes from the surface of the third connection sub-part 313 facing the battery cell 20, and the second shut-off part 3135 is circumferentially provided around the discharge structure 3132, and the second shut-off part 3135 can prevent adhesive or solid particles between the battery cell 20 and the third connection sub-part 313 from coming into contact with the pressure release mechanism 24 and the discharge structure 3132, thereby allowing the discharge to be released in a timely manner and improving the reliability of the battery 1100.

[0176] In a further possible embodiment, the battery cell 20 has electrode terminals 23, the third connection sub-part 313 is provided with a relief hole 3131 for escaping the electrode terminals 23, the third connection sub-part 313 is connected to a first shut-off part 3134, the first shut-off part 3134 protrudes from the surface of the third connection sub-part 313 facing the battery cell 20, the first shut-off part 3134 is circumferentially arranged around the relief hole 3131, the battery cell 20 has a pressure release mechanism 24, the third connection sub-part 313 is provided with a discharge structure 3132, the discharge structure 3132 is installed opposite the pressure release mechanism 24 and releases the discharged material released via the pressure release mechanism 24, the third connection sub-part 313 has, A second blocking portion 3135 is connected, protruding from the surface of the third connection sub-part 313 facing the battery cell 20, and the second blocking portion 3135 is circumferentially arranged around the discharge structure 3132. The first blocking portion 3134 and the second blocking portion 3135 can block adhesive or solid particles between the battery cell 20 and the third connection sub-part 313 from contacting the electrode terminals 23, the pressure release mechanism 24, and the discharge structure 3132. This allows the electrode terminals 23 to be stably electrically connected to the bus member 51, and the pressure release mechanism 24 and the discharge structure 3132 to be turned on in a timely manner, thereby effectively improving the reliability of the battery 1100.

[0177] The installation of the first blocking section 3134 prevents adhesive or solid particles from coming into contact with the electrode terminals 23, which is advantageous in improving the reliability of the electrical connection between the electrode terminals 23 and the bus member 51, and thus improves the reliability of the battery 1100. The installation of the second blocking section 3135 prevents adhesive or solid particles from coming into contact with the pressure release mechanism 24 and the discharge structure 3132, which is advantageous in improving the smoothness of discharge of waste, and thus improves the reliability of the battery 1100.

[0178] In some embodiments, the first blocking portion 3134 can contact the battery cell 20 to improve sealing performance, and adhesive or solid particles located between the battery cell 20 and the third connecting sub-portion 313 are less likely to come into contact with the electrode terminals 23, resulting in higher reliability of the electrical connection between the electrode terminals 23 and the bus member 51, and thus higher reliability of the battery 1100.

[0179] In some embodiments, the second blocking portion 3135 can contact the battery cell 20 to improve sealing performance, and adhesive or solid particles located between the battery cell 20 and the third connecting sub-portion 313 are less likely to come into contact with the pressure release mechanism 24 and discharge structure 3132, allowing the pressure release mechanism 24 and discharge structure 3132 to discharge waste more smoothly, thereby improving the reliability of the battery 1100.

[0180] In some cases, an adhesive is applied to the surface of the battery cell 20 facing the connecting member 30, and the connecting member 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 harden within the gap. The hardness of the hardened adhesive is relatively high, and during the charging and discharging process of the battery cell 20, the hardened adhesive is pressed against the battery cell 20, making the battery cell 20 susceptible to damage and affecting the reliability of the battery cell 20. In some cases, during the manufacturing process of the battery 1100, some solid particles (e.g., metal particles) may fall onto the surface of the battery cell 20 facing the insulating member 30, and these solid particles may move into the gap between two adjacent battery cells 20, making the battery cell 20 susceptible to damage and affecting the reliability of the battery cell 20.

[0181] In some embodiments, a first gap 201 is formed between two adjacent battery cells 20 arranged along a third direction Y, and a first connecting sub-part 311 is provided with a third blocking portion 3111, the third blocking portion 3111 protruding from the surface of the first connecting sub-part 311 facing the battery cells 20, and the third blocking portion 3111 is used to block 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 a second direction X, and a second connecting sub-part 312 is provided with a fourth blocking portion 3121, the fourth blocking portion 3121 protruding from the surface of the second connecting sub-part 312 facing the battery cells 20, and the fourth blocking portion 3121 is used to block adhesive or solid particles from entering the second gap 202.

[0182] Two adjacent battery cells 20 arranged along a third direction Y are installed with a gap between them, and the gap formed between these two adjacent battery cells 20 is the first gap 201. The third blocking portion 3111 can refer to a protruding structure installed on the surface of the first connecting sub-part 311 facing the battery cells 20. The third blocking portion 3111 may be integrally molded with the first connecting sub-part 311, or it may be a separate component. The third blocking portion 3111 is fixed to the first connecting sub-part 311 by methods such as screwing, locking, or bonding. For example, the third blocking portion 3111 may be a sealing strip or the like.

[0183] In some embodiments, the third blocking portion 3111 extends along a second direction X, and in the second direction X, the third blocking portion 3111 may extend from one end to the other of the first connecting sub-portion 311, thereby blocking the adhesive or solid particles from entering all of the first gaps 201 between two adjacent sets of battery cells 20 arranged along the second direction X. The third blocking portion 3111 may be installed in a portion of the first connecting sub-portion 311, thereby blocking the adhesive or solid particles from entering some of the first gaps 201 between two adjacent sets of battery cells 20 arranged along the second direction X.

[0184] In some embodiments, the third barrier portion 3111 may cover the first gap 201 so as to prevent adhesive or solid particles from entering the first gap 201.

[0185] In some embodiments, the third blocking section 3111 includes two spaced-apart first blocking sub-sections 3112, each of which is positioned opposite two adjacent battery cells 20 arranged along a third direction Y, to block adhesive or solid particles from entering the first gap 201.

[0186] Two adjacent battery cells 20 arranged along a second direction X are installed with a gap between them, and the gap formed between these two adjacent battery cells 20 is the second gap 202. The fourth interruption portion 3121 can refer to a protruding structure installed on the surface of the second connection sub-part 312 facing the battery cells 20. The fourth interruption portion 3121 may be integrally molded with the second connection sub-part 312, or it may be a separate component. The fourth interruption portion 3121 is fixed to the second connection sub-part 312 by methods such as screwing, locking, or bonding. For example, the fourth interruption portion 3121 may be a sealing strip or the like.

[0187] In some embodiments, the fourth blocking portion 3121 extends along a third direction Y, and in the third direction Y, the fourth blocking portion 3121 may extend from one end to the other of the second connecting sub-portion 312, thereby blocking the adhesive or solid particles from entering all of the first gaps 201 between two adjacent sets of battery cells 20 arranged along the third direction Y. The fourth blocking portion 3121 may be installed in a portion of the second connecting sub-portion 312, thereby blocking the adhesive or solid particles from entering some of the first gaps 201 between two adjacent sets of battery cells 20 arranged along the third direction Y.

[0188] In some embodiments, the fourth barrier portion 3121 may cover the second gap 202 so as to prevent adhesive or solid particles from entering the second gap 202.

[0189] In some embodiments, the fourth blocking section 3121 includes two spaced-apart second blocking sub-sections 3122, each of which is positioned opposite two adjacent battery cells 20 arranged along a second direction X to block adhesive or solid particles from entering the second gap 202.

[0190] In one possible embodiment, a first gap 201 is formed between two adjacent battery cells 20 arranged along a third direction Y, and a third blocking portion 3111 is provided on a first connecting sub-part 311, the third blocking portion 3111 protruding from the surface of the third connecting sub-part 313 toward the battery cell 20, and the third blocking portion 3111 is used to block adhesive or solid particles located between the third connecting sub-part 313 and the battery cell 20 from entering the first gap 201, thereby reducing the risk of damage to the battery cell 20 and improving the reliability and service life of the battery 1100.

[0191] In one possible embodiment, a second gap 202 is formed between two adjacent battery cells 20 arranged along a second direction X, and a fourth blocking portion 3121 is provided on a second connection sub-part 312, the fourth blocking portion 3121 protruding from the surface of the second connection sub-part 312 toward the battery cells 20, and the fourth blocking portion 3121 is used to block adhesive or solid particles located between the third connection sub-part 313 and the battery cells 20 from entering the second gap 202, thereby reducing the risk of damage to the battery cells 20 and improving the reliability of use of the battery 1100.

[0192] In a further possible embodiment, a first gap 201 is formed between two adjacent battery cells 20 arranged along a third direction Y, and a first connecting sub-part 311 is provided with a third blocking part 3111, the third blocking part 3111 protruding from the surface of the first connecting sub-part 311 facing the battery cell 20, and the third blocking part 3111 is used to block adhesive or solid particles from entering the first gap 201, and a second gap 202 is formed between two adjacent battery cells 20 arranged along a second direction X, and the second connecting sub-part 312 A fourth blocking portion 3121 is provided, which protrudes from the surface of the second connecting sub-portion 312 facing the battery cell 20. The fourth blocking portion 3121 is used to block adhesive or solid particles from entering the second gap 202. The installation of the third blocking portion 3111 and the fourth blocking portion 3121 reduces the risk of adhesive or solid particles entering the first gap 201 and the second gap 202, effectively reducing the risk of damage to the battery cell 20, which is advantageous in improving the reliability of the battery 1100.

[0193] The installation of the third blocking section 3111 and / or the fourth blocking section 3121 reduces the risk of adhesive or solid particles entering the gap between two adjacent battery cells 20, thereby reducing the risk of damage to the battery cells 20 and improving the reliability of the battery 1100.

[0194] In some embodiments, the third blocking portion 3111 can be in contact with the battery cell 20 to improve sealing performance, making it more difficult for adhesive or solid particles to enter the first gap 201, effectively reducing the risk of damage to the battery cell 20, and thus improving the reliability of the battery 1100.

[0195] In some embodiments, the fourth sealing portion 3121 can be in contact with the battery cell 20 to improve sealing performance, making it more difficult for adhesive or solid particles to enter the second gap 202, effectively reducing the risk of damage to the battery cell 20, which is advantageous in improving the reliability of the battery 1100.

[0196] In some embodiments, the connecting member 30 is an insulating member 301, and the battery 1100 further includes a bus member 51 for electrically connecting to the electrode terminals 23 of the battery cell 20, with the first connecting portion 31 of the insulating member 301 provided between the bus member 51 and the battery cell 20.

[0197] The insulating member 301 can refer to a member having insulating properties. The insulating member 301 may be manufactured using an insulating material such as epoxy resin, polycarbonate, polyvinyl chloride, or polypropylene, and the insulating member 301 can further refer to a member having an insulating layer coated on its surface. 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.

[0198] The bus member 51 can refer to a member for which electrical connection is made to the electrode terminals 23 of the battery cell 20. The bus member 51 is electrically connected to the electrode terminals 23 and can realize the input and output of electrical energy of the battery cell 20. The bus member 51 can be electrically connected to the electrode terminals 23 of different battery cells 20, realizing series connection, parallel connection, or series-parallel connection of different battery cells 20. The bus member 51 may be welded to the electrode terminals 23, or it may be electrically connected to the electrode terminals 23 by employing other electrical connection methods. The bus member 51 may be a conductive material such as a copper busbar or an aluminum busbar.

[0199] The first connection portion 31 of the insulating member 301 is provided between the bus member 51 and the battery cell 20, insulating the first connection portion 31 from the battery cell 20, reducing the risk of short circuits in the battery cell 20, and improving the reliability of the battery 1100. Furthermore, the insulating member 301 located between the bus member 51 and the battery cell 20 in the battery 1100 can also be directly used as the connection member 30, eliminating the need to install an additional connection member 30, which is advantageous in increasing the compactness of the structure of the battery 1100 and reducing the manufacturing cost of the battery 1100.

[0200] In some embodiments, the bus component 51 is integrated with the insulating component 301, which is advantageous in improving the integration density of the battery 1100 and enhancing the performance of the battery 1100.

[0201] In some embodiments, the connecting member 30 is a heat exchange member 302 for exchanging heat with the battery cell 20.

[0202] The heat exchange member 302 can refer to a member that exchanges heat with the battery cell 20. A heat exchange passage may be provided inside the heat exchange member 302, and the heat exchange medium flows through the heat exchange passage, thereby achieving heat exchange with the battery cell 20. When the temperature of the heat exchange medium is higher than the temperature of the battery cell 20, the heat exchange medium heats the battery cell 20, and when the temperature of the heat exchange medium is lower than the temperature of the battery cell 20, the heat exchange medium cools the battery cell 20, positioning the battery cell 20 in an appropriate temperature environment, thereby exhibiting relatively good charge and discharge performance. The heat exchange medium may be water, air, coolant, etc., but is not limited to these.

[0203] The heat exchanger 302 can control the temperature of the battery cell 20, allowing the battery 1100 to exhibit relatively good charge and discharge performance. Furthermore, the heat exchanger 302 can be directly used as a connecting member 30 in the battery 1100, eliminating the need to install additional connecting members 30. This enhances the compactness of the battery 1100's structure and is advantageous in reducing the manufacturing cost of the battery 1100.

[0204] In some embodiments, the battery 1100 further includes a bus member 51 for electrically connecting to a battery cell 20, and a first connection portion 31 of the heat exchange member 302 is provided between the bus member 51 and the battery cell 20, and at least one of the surfaces of the first connection portion 31 of the heat exchange member 302, which faces the bus member 51 and which faces away from the bus member 51, is covered with an insulating layer.

[0205] The insulating layer may refer to a surface coating having 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.

[0206] In one possible embodiment, the battery 1100 further includes a bus member 51 for electrical connection to a battery cell 20, and a first connection portion 31 of the heat exchange member 302 is provided between the bus member 51 and the battery cell 20, wherein an insulating layer is covered on the surface of the first connection portion 31 of the heat exchange member 302 facing the bus member 51, and the insulating layer is located between the first connection portion 31 and the bus member 51.

[0207] The insulating layer can insulate and separate the first connection part 31 and the bus member 51. By installing one heat exchange member 302 in this way, not only can heat exchange of the battery cell 20 be achieved, but insulation from the bus member 51 can also be achieved, and furthermore, a connection between the battery cell 20 and the case 10 can be achieved. This is advantageous in reducing the number of parts in the battery 1100, improving the compactness of the structure, improving the performance of the battery 1100, and reducing the manufacturing cost of the battery 1100.

[0208] In another possible embodiment, the battery 1100 further includes a bus member 51 for electrically connecting to a battery cell 20, and a first connection portion 31 of the heat exchange member 302 is provided between the bus member 51 and the battery cell 20, wherein an insulating layer is covered on the surface of the first connection portion 31 of the heat exchange member 302 that faces away from the bus member 51.

[0209] The insulating layer is located between the first connection part 31 and the battery cell 20, and the insulating layer can insulate and separate the first connection part 31 and the battery cell 20, thereby achieving insulation between the heat exchange member 302 and the battery cell 20. By installing one heat exchange member 302 in this way, not only can heat exchange of the battery cell 20 be achieved, but insulation from the battery cell 20 can also be achieved, and furthermore, a connection between the battery cell 20 and the case 10 can be achieved, which is advantageous in reducing the number of parts in the battery 1100, improving the compactness of the structure, improving the performance of the battery 1100, and reducing the manufacturing cost of the battery 1100.

[0210] In a further possible embodiment, the battery 1100 further includes a bus member 51 for electrically connecting to a battery cell 20, and a first connection portion 31 of the heat exchange member 302 is provided between the bus member 51 and the battery cell 20, wherein both the surface of the first connection portion 31 of the heat exchange member 302 facing away from the bus member 51 and the surface facing the bus member 51 are covered with an insulating layer.

[0211] A double layer of insulation can be formed between the heat exchange member 302 and the bus member 51, and between the heat exchange member 302 and the battery cell 20, resulting in a high insulation effect, a low risk of short-circuiting the battery 1100, and high reliability of the battery 1100. Furthermore, by installing a single heat exchange member 302, not only can heat exchange of the battery cell 20 be achieved, but insulation between the battery cell 20 and the bus member 51 can also be achieved, and connection between the battery cell 20 and the case 10 can be achieved, which is advantageous in reducing the number of parts in the battery 1100, improving the compactness of the structure, improving the performance of the battery 1100, and reducing the manufacturing cost of the battery 1100.

[0212] An insulating layer is applied to at least one of the surfaces of the first connection portion 31 of the heat exchange member 302, specifically the surface facing the bus member 51 and the surface facing away from the bus member 51. This not only provides insulation from the battery cell 20 and / or the bus member 51, but also enables the heat exchange member 302 to perform heat exchange with the battery cell 20 and connect the battery cell 20 to the case 10. Thus, one heat exchange member 302 can perform three functions, reducing the number of parts in the battery 1100, improving structural compactness, enhancing the performance of the battery 1100, and lowering the manufacturing cost of the battery 1100.

[0213] In some embodiments, the battery 1100 further includes a sampling assembly 52 that samples information from the battery cells 20, and the sampling assembly 52 is connected to a connecting member 30.

[0214] The sampling assembly 52 may refer to a component that collects information from the battery cells 20, and this information may include current, voltage, temperature, etc. After collecting this information, the sampling assembly 52 can feed it back to the battery 1100's control system (e.g., BMS (Battery Management System)), which then controls the charging and discharging of the battery cells 20 to improve the charging and discharging performance of the battery 1100. If there are multiple battery cells 20, the sampling assembly 52 may collect information from some of the battery cells 20 or it may collect information 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 a bus component 51 to collect information from the battery cells 20.

[0215] By connecting the sampling assembly 52 to the connecting member 30, the sampling assembly 52 is integrated with the connecting member 30, improving the integration density of the battery 1100 and thereby improving the performance of the battery 1100.

[0216] In some embodiments, the sampling assembly, connecting members, and bus members may be integrated into a single, integrated structure, which is advantageous for simplifying the manufacturing process, improving the manufacturing efficiency of the battery, and reducing manufacturing costs.

[0217] The embodiments of this application will be described below with reference to several specific examples.

[0218] Example 1 As shown in Figures 1-5 and 9, in this embodiment, the battery 1100 includes a case 10, a connecting member 30, and at least one battery cell 20, the at least one battery cell 20 being located inside the case 10, and the connecting member 30 including a connected first connecting portion 31 and a second connecting portion 32, the first connecting portion 31 being fixedly connected to the at least one battery cell 20, and the second connecting portion 32 being fixedly connected to the case 10.

[0219] In this embodiment, the case 10 includes a first case 11 and a second case 12, the first case 11 is configured with a housing cavity 113 having an opening, the battery cell 20 is located inside the housing cavity 113, the second case 12 covers the opening of the housing cavity 113, and at least one of the first case 11 and the second case 12 is fixedly connected to a second connection part 32.

[0220] In this embodiment, when the first case 11 is fixedly connected to the second connection part 32, the first case 11 includes a plurality of side wall portions 111 for connection to the second case 12, the plurality of side wall portions 111 are connected and surround to form a housing cavity 113, of which at least one side wall portion 111 is fixedly connected to the second connection part 32.

[0221] In this embodiment, second connection parts 32 are connected to opposite sides of the first connection part 31, and the two second connection parts 32 are fixedly connected to two opposing side wall parts 111, respectively.

[0222] In this embodiment, there are four side wall portions 111, of which two side wall portions 111 extend along the length direction of the battery 1100 and are spaced apart along the width direction of the battery 1100, and the other two side wall portions 111 extend along the width direction of the battery 1100 and are spaced apart along the length direction of the battery 1100, and the four side wall portions 111 surround the battery 1100 and form a rectangular frame structure. There are two second connection portions 32, and the two second connection portions 32 are located on opposite sides of the first connection portion 31 along the second direction X, and the two side wall portions 111 distributed spaced apart along the second direction X are fixedly connected to the two second connection portions 32. Of course, in other embodiments, the second connection portions 32 may be fixedly connected in a one-to-one correspondence with the side wall portions 111. The second case 12 covers the opening on one side of the rectangular frame structure, and the base plate 112 covers the opening on the other side of the rectangular frame structure.

[0223] The battery 1100 has a height direction, a length direction, and a width direction. The height direction of the battery 1100 can refer to the first direction Z in the figure, the width direction of the battery 1100 can refer to the second direction X in the figure, and the length direction of the battery 1100 can refer to the third direction Y in the figure. The case 10 defines the external structure of the battery 1100. The height direction of the case 10 may be the height direction of the battery 1100, the length direction of the case 10 is the length direction of the battery 1100, and the width direction of the case 10 is the width direction of the battery 1100.

[0224] 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 can refer to a mounting beam installed on the side wall portion 111, and the mounting beam may be integrally molded with the side wall portion 111. The mounting beam is provided with a connection hole, and a connecting member is connected to the vehicle by passing through the connection hole. The connecting member may be a screw or a bolt, but is not limited to these.

[0225] In this embodiment, the second connecting portion 32 is bonded to the side wall portion 111.

[0226] In this embodiment, the end of the side wall portion 111 facing the second case 12 is formed into a housing notch 1112, and the second connecting portion 32 is fixed within the housing notch 1112.

[0227] In this embodiment, in the first direction Z, the second connecting portion 32 does not protrude from the end face of the side wall portion 111 toward the second case 12, and of these, the first direction Z is the direction toward the second case 12 of the first case 11.

[0228] In this embodiment, the second connecting portion 32 is supported by the wall surface of the housing notch 1112 facing the second case 12, and the second connecting portion 32 is also adhered to the wall surface of the housing notch 1112 facing the second case 12 by the adhesive 53.

[0229] In this embodiment, a connecting member 30 is provided on the side of the battery cell 20 facing the second case 12.

[0230] In this embodiment, the battery cell 20 has a first surface 21, electrode terminals 23 are provided on the first surface 21, and the first surface 21 is connected to a first connection portion 31.

[0231] In this embodiment, the first surface 21 is bonded to the first connecting portion 31.

[0232] 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 may be parallel to the first direction Z, the width direction of the battery cell 20 may be parallel to the second direction X, and the length direction of the battery cell 20 may be parallel to the third direction Y. When the battery cell 20 is laid out in this way within the case 10, the internal space of the case 10 can be used effectively and it is also convenient for mounting other components.

[0233] The battery cell 20 includes two first sides 26 distributed along its height, with the distance between the two first sides 26 defining the height of the battery cell 20. The battery cell 20 further includes two second sides 27 distributed along its length, with the two second sides 27 defining the length of the battery cell 20. The battery cell 20 further includes two third sides 28 distributed along its width, with the two third sides 28 defining the width of the battery cell 20. In a flattened, for example, rectangular battery cell 20, its width is smaller than its length and height, and the area of ​​its third sides 28 is the largest; therefore, the third sides 28 are also called the large sides.

[0234] In this embodiment, the electrode terminal 23 is provided on the first side surface 26, that is, the first side surface 26 is the first surface 21.

[0235] Example 2 The differences between this embodiment and Embodiment 1 are as follows: Referring to Figure 6, the battery 1100 further includes a fastening member 40, the second connection portion 32 having a first connection hole 321, the side wall portion 111 having a second connection hole 1111, and the fastening member 40 is drilled in the first connection hole 321 and the second connection hole 1111 so as to fix the second connection portion 32 and the side wall portion 111.

[0236] In this embodiment, in the first direction Z, the fastening member 40 does not protrude from the end face of the side wall portion 111 toward the second case 12, and of these, the first direction Z is the direction toward the second case 12 of the first case 11.

[0237] In this embodiment, a second connection hole 1111 is provided on the wall surface of the housing notch 1112 facing the second case 12, and the fastening member 40 passes through the first connection hole 321 and the second connection hole 1111 in order, thereby fixing the second connection portion 32 to the side wall portion 111, and the end of the fastening member 40 facing the second case 12 is also housed in the housing notch 1112 and does not protrude from the end face of the side wall portion 111 facing the second case 12.

[0238] In this embodiment, the fastening member 40 is a rivet 41, which penetrates the first connection hole 321 and the second connection hole 1111, thereby fixing and connecting the second connection portion 32 and the side wall portion 111.

[0239] Example 3 The differences between this embodiment and Embodiment 2 are as follows: Referring to Figure 7, the fastening member 40 is a bolt 42, which passes through the first connection hole 321 and the second connection hole 1111, thereby fixing the second connection part 32 and the side wall part 111.

[0240] Example 4 The differences between this embodiment and Embodiment 2 are as follows: Referring to Figure 8, the fastening member 40 is a rivet 41, which penetrates the first connection hole 321 and the second connection hole 1111, and adhesive 53 is filled between the rivet cap of the rivet 41 and the second connection portion 32, thereby improving the reliability of the fixed connection between the second connection portion 32 and the side wall portion 111, and thereby improving the structural strength of the battery 1100.

[0241] Example 5 The differences between this embodiment and Embodiment 1 are as follows: Referring to Figure 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 connection portion 31.

[0242] In this embodiment, 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.

[0243] Example 6 The differences between this embodiment and Embodiment 1 are as follows: Referring to Figures 11-13, there are multiple battery cells 20, which are arranged in a matrix along a second direction X and a third direction Y, with the second direction X and the third direction Y being perpendicular, and the first connection portion 31 includes a first connection sub-port 311 extending along the second direction X and a second connection sub-port 312 extending along the third direction Y, the first connection sub-port 311 being fixedly connected to the multiple battery cells 20 arranged along the second direction X, and the second connection sub-port 312 being fixedly connected to the multiple battery cells 20 arranged along the third direction Y, and at least one of the first connection sub-port 311 and the second connection sub-port 312 being connected to the second connection portion 32.

[0244] In this embodiment, there are two first connecting sub-parts 311 and seven second connecting sub-parts 312. The two first connecting sub-parts 311 and the seven second connecting sub-parts 312 form a mesh structure. Both of the two first connecting sub-parts 311 have second connecting parts 32 connected to both ends along the second direction X. The first connecting sub-parts 311 and the second connecting parts 32 are integrally molded structures, while the seven second connecting sub-parts 312 are not connected to the second connecting parts 32.

[0245] In this embodiment, the first connection sub-part 311 is fixedly connected to two adjacent battery cells 20 arranged along the third direction Y, and the second connection sub-part 312 is fixedly connected to two adjacent battery cells 20 arranged along the second direction X.

[0246] In this embodiment, the connecting member 30 is an insulating member 301, and the battery 1100 further includes a bus member 51 for electrically connecting to the electrode terminals 23 of the battery cell 20, and the first connecting portion 31 of the insulating member 301 is provided between the bus member 51 and the battery cell 20.

[0247] In this embodiment, the battery 1100 further includes a sampling assembly 52 that samples information from the battery cells 20, and the sampling assembly 52 is connected to the connecting member 30.

[0248] Example 7 The differences between this embodiment and embodiment 6 are as follows: Referring to Figures 14-17, the first connecting sub-part 311 and the second connecting sub-part 312 surround each other to form a housing area 314, the first connecting sub-part 31 further includes a third connecting sub-part 313, the third connecting sub-part 313 connects the first connecting sub-part 311 and the second connecting sub-part 312, and the third connecting sub-part 313 is located within the housing area 314.

[0249] In this embodiment, the battery cell 20 has electrode terminals 23, the third connection sub-part 313 is provided with a relief hole 3131 for escaping the electrode terminals 23, the third connection sub-part 313 is connected to the first shut-off part 3134, the first shut-off part 3134 protrudes from the surface of the third connection sub-part 313 facing the battery cell 20, the first shut-off part 3134 is arranged around the relief hole 3131, and the battery cell 20 has a pressure release mechanism 24 Furthermore, a discharge structure 3132 is provided in the third connection sub-part 313, and the discharge structure 3132 is installed facing the pressure release mechanism 24 to release the discharged material released via the pressure release mechanism 24. A second shut-off part 3135 is connected to the third connection sub-part 313, and the second shut-off part 3135 protrudes from the surface of the third connection sub-part 313 facing the battery cell 20, and the second shut-off part 3135 is provided around the discharge structure 3132.

[0250] In this embodiment, a first gap 201 is formed between two adjacent battery cells 20 arranged along a third direction Y, a first connection sub-part 311 is provided with a third blocking part 3111 which protrudes from the surface of the first connection sub-part 311 facing the battery cells 20, and the third blocking part 3111 is used to block adhesive or solid particles from entering the first gap 201, a second gap 202 is formed between two adjacent battery cells 20 arranged along a second direction X, a second connection sub-part 312 is provided with a fourth blocking part 3121 which protrudes from the surface of the second connection sub-part 312 facing the battery cells 20, and the fourth blocking part 3121 is used to block adhesive or solid particles from entering the second gap 202.

[0251] Example 8 The differences between this embodiment and Embodiment 7 are as follows: The connecting member 30 is a heat exchange member 302 for exchanging heat with the battery cell 20.

[0252] In this embodiment, the battery 1100 further includes a bus member 51 for electrically connecting to the battery cell 20, and the first connection portion 31 of the heat exchange member 302 is provided between the bus member 51 and the battery cell 20, and an insulating layer is covered on the surface of the first connection portion 31 of the heat exchange member 302 facing the bus member 51 and the surface facing away from the bus member 51.

[0253] In some other embodiments of the present application, an electrical device including the battery 1100 described in the above embodiment is provided, as shown in Figure 1.

[0254] The electrical device of the embodiment of the present invention employs the above-mentioned battery 1100, and the structural strength and rigidity of the battery 1100 are good, which is advantageous in improving the performance of the electrical device.

[0255] In some embodiments, the electrical device is a vehicle 1000, and the battery cell 20 is installed so that the largest surface area faces the door of the vehicle 1000.

[0256] In some embodiments, the third side surface 28 of the battery cell 20, as shown in Figures 9 and 10, is the surface with the largest area. In some embodiments, the first side surface 26 of the battery cell 20 is the surface with the largest area. In some embodiments, the second side surface 27 of the battery cell 20 is the surface with the largest area.

[0257] By adopting the technical proposal of this embodiment, the largest surface area of ​​the battery cell 20 is positioned to face the door of the vehicle 1000. When the vehicle 1000 comes into contact with a side pillar or is subjected to side pressure, the largest surface area is subjected to deformation. Since the largest surface area of ​​the battery cell 20 has a much larger tolerance for intrusion than the other surfaces of the battery cell 20, the risk of a short circuit occurring after the battery cell 20 is deformed by pressure is relatively low, and the safety of the battery 1100 in the operation modes of side pillar contact and side pressure can be greatly improved.

[0258] The descriptions of each of the above embodiments tend to emphasize the differences between them, and their similarities or identical features, which can be referenced to one another, are omitted in this specification for the sake of brevity.

[0259] Finally, it should be noted that the above embodiments are used solely to illustrate the technical concepts of the present application and are not limiting. While the present application has been described in detail with reference to the embodiments described above, those skilled in the art will understand that modifications to the technical concepts described in the embodiments described above, or equivalent substitutions of some or all of their technical features, are still possible. Such modifications or substitutions should not cause the essence of the corresponding technical concepts to deviate from the scope of the technical concepts of the embodiments of the present application, and should all be included within the scope of the claims and specification of the present application. In particular, any technical features mentioned in each embodiment can be combined in any way, provided that they are not structurally contradictory. The present application is not limited to the specific embodiments disclosed herein, but includes all technical concepts included in the claims. [Explanation of Symbols]

[0260] 1000 Vehicle, 1100 Battery, 1200 Controller, 1300 Motor, 10 Case, 11 First Case, 111 Sidewall, 1111 Second Connection Hole, 1112 Housing Notch, 1113 Mounting Structure, 112 Base Plate, 113 Housing Cavity, 12 Second Case, 20 Battery Cell, 21 First Surface, 22 Second Surface, 23 Electrode Terminal, 24 Pressure Release Mechanism, 26 First Side, 27 Second Side, 28 Third Side, 201 First Gap, 202 Second Gap, 30 Connecting Member, 301 Insulating Member, 302 Heat Exchange Member, 31 First Connection Part, 311 First Connection Sub-Part, 3111 Third Interruption Part, 3112 First Interruption Sub-Part, 312 Second Connection Sub-Part, 3121 Fourth Interruption Part, 3122 313 Second blocking sub-part, 3133 Third connecting sub-part, 3131 Escape hole, 3132 Discharge structure, 31321 Discharge hole, 3133 Reinforcement rib, 3134 First blocking part, 3135 Second blocking part, 314 Containment area, 32 Second connecting part, 321 First connecting hole, 40 Fastening member, 41 Rivet, 42 Bolt, 51 Bus member, 52 Sampling assembly, 53 Adhesive.

Claims

1. It is a battery, The case and At least one battery cell located within the case, A connecting member comprising a first connecting portion and a second connecting portion, wherein the first connecting portion is fixedly connected to at least one of the battery cells, and the second connecting portion is fixedly connected to the case, is characterized by including such a connecting member. battery.

2. The case comprises a first case and a second case, the first case having a housing cavity with an opening, the battery cell being located within the housing cavity, and the second case covering the opening of the housing cavity. At least one of the first case and the second case is fixedly connected to the second connection portion. The battery according to claim 1.

3. When the first case is fixedly connected to the second connection, the first case includes a plurality of side wall portions for connecting to the second case, the plurality of side wall portions are connected and surround to form the housing cavity, and at least one of the side wall portions is fixedly connected to the second connection. Of these, at least one of the side wall portions is fixedly connected to the second connecting portion, The battery according to claim 2.

4. The second connecting portion is characterized by being bonded to the side wall portion. The battery according to claim 3.

5. The battery further includes a fastening member, wherein a first connection hole is provided in the second connection portion, a second connection hole is provided in the side wall portion, and the fastening member is drilled in the first connection hole and the second connection hole so as to fix the second connection portion and the side wall portion. The battery according to claim 3 or 4.

6. In the first direction, the fastening member does not protrude from the end face of the side wall portion toward the second case, and the first direction is characterized in that the first case is toward the second case. The battery according to claim 5.

7. A housing notch is provided at the end of the side wall portion facing the second case, and the second connecting portion is fixed within the housing notch. The battery according to any one of claims 3 to 6.

8. In the first direction, the second connecting portion does not protrude from the end face of the side wall portion toward the second case, and the first direction is characterized in that the first case is toward the second case. The battery according to claim 7.

9. The second connecting portion is connected to both opposing sides of the first connecting portion, and the two second connecting portions are fixedly connected to the two side walls that are installed opposite each other. The battery according to any one of claims 3 to 8.

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

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

12. The battery cell has a first surface on which electrode terminals are provided, 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 being connected to the first connection portion. The battery according to any one of claims 1 to 11.

13. When the first surface is connected to the first connection, the first surface is bonded to the first connection. When the second surface is connected to the first connection portion, the second surface is bonded to the first connection portion, The battery according to claim 12.

14. The number of the battery cells is multiple, and the multiple battery cells are arranged in a matrix along a second direction and a third direction, with the second direction being perpendicular to the third direction. The first connection portion includes a first connection sub-part extending along the second direction and a second connection sub-part extending along the third direction, wherein the first connection sub-part is fixedly connected to a plurality of the battery cells arranged along the second direction, and the second connection sub-part is fixedly connected to a plurality of the battery cells arranged along the third direction, and at least one of the first connection sub-part and the second connection sub-part is connected to the second connection portion. The battery according to any one of claims 1 to 13.

15. The first connection sub-part is fixedly connected to two adjacent battery cells arranged along the third direction. and / or, the second connection sub-part is fixedly connected to two adjacent battery cells arranged along the second direction, The battery according to claim 14.

16. The first connecting sub-part and the second connecting sub-part surround each other to form a housing area, the first connecting sub-part further includes a third connecting sub-part, the third connecting sub-part connects the first connecting sub-part and the second connecting sub-part, and the third connecting sub-part is located within the housing area. The battery according to claim 14 or 15.

17. The battery cell has electrode terminals, the third connection sub-part is provided with a relief hole for the electrode terminals, the third connection sub-part is connected to a first interruption part, the first interruption part protrudes from the surface of the third connection sub-part facing the battery cell, and the first interruption part is arranged around the relief hole. and / or, the battery cell has a pressure release mechanism, the third connection sub-part is provided with a discharge structure, the discharge structure is installed opposite the pressure release mechanism to release the discharged material released via the pressure release mechanism, the third connection sub-part is connected to a second shut-off part, the second shut-off part protrudes from the surface of the third connection sub-part facing the battery cell, and the second shut-off part is provided around the discharge structure, The battery according to claim 16.

18. A first gap is formed between two adjacent battery cells arranged along the third direction, and a third blocking portion is provided in the first connection sub-part, the third blocking portion protruding from the surface of the first connection sub-part facing the battery cells, 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 the second direction, and the second connection sub-part is provided with a fourth blocking portion, the fourth blocking portion protruding from the surface of the second connection sub-part facing the battery cells, and the fourth blocking portion is used to block adhesive or solid particles from entering the second gap, The battery according to any one of claims 14 to 17.

19. The connecting member is an insulating member, the battery further includes a bus member for electrically connecting to the electrode terminals of the battery cell, and the first connecting portion of the insulating member is provided between the bus member and the battery cell. The battery according to any one of claims 1 to 18.

20. The connecting member is characterized by being a heat exchange member for exchanging heat with the battery cell. The battery according to any one of claims 1 to 19.

21. The battery further includes a bus member for electrically connecting to the battery cell, the first connection portion of the heat exchange member is provided between the bus member and the battery cell, and at least one of the surfaces of the first connection portion of the heat exchange member, which faces the bus member and which faces away from the bus member, is covered with an insulating layer. The battery according to claim 20.

22. The battery further includes a sampling assembly for sampling information from the battery cells, and the sampling assembly is connected to the connecting member. The battery according to any one of claims 1 to 21.

23. A battery comprising any one of claims 1 to 22, Electrical device.

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

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