Batteries and power-consuming devices

Abstract

The present invention relates to a battery (10) and a power consuming device (1). The battery (10) includes a battery assembly (20), the battery assembly (20) includes at least one battery cell (21), the battery assembly (20) is installed along a first direction, the first direction being a longitudinal direction of the battery (10) or a running direction of a power consuming device (1) having the battery (10), the battery cell (21) includes a plurality of surfaces, the plurality of surfaces including a first surface (2111) having a largest area, the plurality of surfaces further including two second surfaces (2121) installed opposite to each other, the two second surfaces (2121) being respectively connected to the first surface (2111), the battery cell (21) further includes an electrode terminal (214), the electrode terminal (214) being provided on the first surface (2111) or at least one of the second surfaces (2121). When an impact occurs to the power consuming device (1), the electrode terminals (214) are less likely to be impacted, thereby avoiding damage to the electrode terminals (214) and ensuring normal power supply from the battery (10).

Description

Technical Field

[0001] This application relates to the field of battery technology, and particularly to batteries and power-consuming devices.

Background Art

[0002] In recent years, with the development of the economy, battery technology has been widely applied in various fields, especially in the field of new energy vehicles. Currently, new energy vehicles have had a great impact on conventional fuel vehicles. As a core component of new energy vehicles, batteries play an extremely important role in the development process of new energy vehicles.

[0003] A plurality of battery cells are included in the battery, electrode terminals are provided on the battery cells, and the battery cells supply power through the electrode terminals. However, due to the problem of the installation position of the electrode terminals, the electrode terminals are likely to be impacted when the vehicle collides, thereby causing damage to the electrode terminals and affecting the safety of the battery cells.

Summary of the Invention

[0004] In view of the defects existing in the prior art, the purpose of this application is to provide a battery and a power-consuming device that can effectively solve the problem of causing damage to the electrode terminals when an impact occurs to the vehicle.

[0005] The first aspect of this application discloses a battery including a battery assembly, The battery assembly includes at least one battery cell, the battery assembly is installed along a first direction, and the first direction is the longitudinal direction of the battery or the traveling direction of the power-consuming device having the battery. The battery cell includes a plurality of surfaces, the plurality of surfaces include a first surface with the largest area, the plurality of surfaces further include two second surfaces that are installed opposite to each other, the two second surfaces are respectively connected to the first surface, the battery cell further includes electrode terminals, and the electrode terminals are provided on the first surface or at least one of the second surfaces.

[0006] According to the battery of this application, when the electrode terminals are provided on the second surface, the electrode terminals may be installed along the vertical direction or along the direction of travel of the power-consuming device, thereby making the electrode terminals less susceptible to impact when the power-consuming device collides with it along the lateral direction of travel, thereby avoiding damage to the electrode terminals and ensuring normal power supply of the battery. When the electrode terminals are provided on the first surface, since the first surface is the surface with the largest area, the occupancy rate of the electrode terminals on the first surface is small, so when an impact occurs on the power-consuming device, the electrode terminals are less susceptible to impact, thereby avoiding damage to the electrode terminals and ensuring normal power supply of the battery.

[0007] In some embodiments of this application, the two second surfaces are positioned opposite each other along a second direction, the second direction intersecting the first direction. The second direction may also be vertical, so that the two second surfaces are positioned opposite each other along the vertical direction, i.e., the electrode terminals are positioned along the vertical direction, thereby reducing the impact on the electrode terminals when a power-consuming device collides with it along the lateral direction in the direction of travel.

[0008] In some embodiments of this application, the two second surfaces are positioned opposite each other along the first direction. By positioning the two second surfaces opposite each other along the first direction, i.e., the electrode terminals are positioned along the direction of travel of the power consuming device, the electrode terminals are less likely to be impacted when the power consuming device collides with it along the lateral direction of travel.

[0009] In some embodiments of this application, the first surface intersects with a horizontal plane. The first surface is the surface with the largest area of ​​battery cells, and intersecting the first surface with the horizontal plane allows for maximizing the number of battery cells arranged in the horizontal plane, thereby improving the overall energy density of the battery.

[0010] In some embodiments of this application, the second direction is intersecting or parallel to the horizontal plane. That is, the second direction may be substantially vertical or horizontal. The corresponding second surface may be arranged along the substantially horizontal direction or along the vertical direction.

[0011] In some embodiments of this application, a heat conduction member is further included, the heat conduction member being positioned along a first direction, and each battery cell in the battery assembly is heat-conductively connected to the heat conduction member via at least a first surface. By positioning the heat conduction member along the first direction, heat exchange can be performed by the heat conduction member to any of the battery cells in the battery assembly, and at the same time, when a power-consuming device collides with it along the lateral direction, the impact force does not act directly on the ends of the heat conduction member, thus avoiding damage to the heat conduction member, and at the same time, the battery cells are heat-conductively connected to the heat conduction member via the first surface, ensuring the maximum contact area between the heat conduction member and the battery cells, thereby ensuring the heat exchange effect of the heat conduction member on the battery cells.

[0012] In some embodiments of this application, at least two battery assemblies are included, and both sides of the heat conduction member are thermally conductively connected to the two battery assemblies along a third direction, and the third direction intersects both the first direction and the first surface. That is, both sides of the heat conduction member are thermally conductively connected to the first surface of the battery cell, thereby improving the heat exchange effect of the heat conduction member with respect to the battery cell.

[0013] In some embodiments of this application, the longitudinal direction of the battery is parallel to or intersects the direction of travel of the power-consuming device. The battery in this application can be installed in the power-consuming device along any direction to facilitate battery installation.

[0014] In some embodiments of this application, a heat exchange medium passage is provided within the heat conduction member. The heat exchange medium passage is used to circulate the heat exchange medium, thereby removing heat released from the battery cell by the flow of the heat exchange medium, or heating the battery cell, and further improving the heat exchange efficiency of the battery cell.

[0015] In some embodiments of this application, the battery includes a plurality of heat conductive members, which are arranged along a third direction, the third direction intersecting both a first direction and a first surface. By arranging the plurality of heat conductive members along the third direction, they are used to dissipate heat together in the battery, effectively improving the rate of heat exchange to the battery.

[0016] In some embodiments of this application, heat conduction members are provided on both sides of the battery assembly along a third direction, and the battery assembly is heat conductionally connected to the heat conduction members on both sides. Both sides of the battery assembly are heat conductionally connected to the heat conduction members simultaneously, and heat is dissipated simultaneously through both sides of the battery assembly, effectively improving the rate of heat exchange to the battery.

[0017] In some embodiments of this application, along a third direction, the battery cell includes two opposing first surfaces, each of which is thermally conductively connected to a thermal conductive member. When the battery cell has two first surfaces with the largest surface area, the heat exchange rate to the battery is effectively improved by dissipating heat from both first surfaces simultaneously.

[0018] In some embodiments of this application, the battery cell includes an electrode assembly, the electrode assembly includes a body and tabs protruding from the body, the tabs being electrically connected to electrode terminals, and along a third direction, the projections of the heat conductor and the body have at least partially overlapping and overlapping regions, the third direction intersects both the first direction and the first surface. By positioning the heat conductor and the body to overlap at least partially along the third direction, the heat conductor can effectively exchange heat with the body, thereby improving the heat exchange effect on the battery cell.

[0019] In some embodiments of this application, along the second direction, the size of the main body is L1 and the size of the heat conduction member is L2, where 0.5 ≤ L2 / L1 ≤ 1.5, and the first, second, and third directions intersect in pairs. The L2 / L1 range value is set to be greater than 0.5 and less than 1.5 to ensure that the heat conduction member has a sufficient heat conduction area, thereby enabling heat exchange with the main body and significantly enhancing the heat exchange effect of the heat conduction member with respect to the main body.

[0020] In some embodiments of this application, along the second direction, the size of the overlapping region is L3, and 0.5 ≤ L3 / L1 ≤ 1. By setting the size of the overlapping region in the second direction, the heat exchange area between the heat conductor and the main body can be appropriately set, and the heat exchange effect of the heat conductor on the main body can be significantly enhanced.

[0021] In some embodiments of this application, the battery further includes a current collector that is in fluid communication with a plurality of heat conductive members. Here, a current collector is provided at one end of the heat conduction member located in the first direction, or current collectors are provided at both ends of the heat conduction member located in the first direction. The current collectors are used to supply or collect the heat exchange medium in the heat exchange medium passage, thereby used to exchange heat in the battery. By providing the current collectors at the ends of the heat conduction member in the first direction, when a power-consuming device collides with it laterally, the impact force does not directly act on the ends of the heat conduction member, thereby preventing damage to the heat conduction member and ensuring the safety and reliability of the battery's use.

[0022] In some embodiments of this application, there are two current collectors, the two current collectors are located at one end of the heat conduction member in a first direction, and the two current collectors are arranged along a second direction, the second direction intersects both the first direction and the horizontal plane. By providing both current collectors at one end in the first direction and arranging them along the second direction, the space occupied by the current collectors in the battery along the first direction can be effectively reduced, thereby facilitating the installation of other structures in the battery and improving the energy density of the battery. Furthermore, by providing both current collectors at one end in the first direction, the probability of damage to the current collectors in the event of a collision facing the first direction can be reduced.

[0023] In some embodiments of this application, the electrode terminals include two electrode terminals with opposite polarity, and the two electrode terminals are provided on one second surface, or the two electrode terminals are each provided on two second surfaces. The two electrode terminals with opposite polarity may be provided on the same second surface of the battery cell, or each on two second surfaces, as needed, so that the electrode terminals avoid the first surface that exchanges heat with the heat conduction member and facilitate subsequent electrical connections with other adjacent battery cells.

[0024] In some embodiments of this application, the battery cell further includes a pressure relief mechanism, wherein the pressure relief mechanism and at least one electrode terminal are located on the same second surface, or the pressure relief mechanism and the electrode terminal are located on two separate second surfaces. The pressure relief mechanism communicates with the interior of the battery cell and is used to release internal pressure when the internal pressure of the battery cell rises. The pressure relief mechanism may be located on the same second surface as the electrode terminal, or on two separate second surfaces, as necessary, so that the pressure relief mechanism avoids the first surface that exchanges heat with the heat conductor, and so that if thermal runaway occurs in the battery cell, the pressure relief mechanism can smoothly release the pressure.

[0025] In some embodiments of the present application, the electrode terminal is provided on the first surface. The electrode terminal is provided on the first surface, and power is supplied to the power-consuming device through the electrode terminal on the first surface. By providing the electrode terminal on the first surface, the space occupied by the electrode terminal in the second direction of the battery can be saved, and the energy density of the battery can be further improved.

[0026] In some embodiments of the present application, the battery cell includes a first surface and a fourth surface installed opposite to the first surface. The first surface and the fourth surface are installed opposite to each other along a third direction. The third direction intersects both the first direction and the first surface. A concave portion is provided at the edge of the fourth surface. The first surface is used for installing the electrode terminal. The electrode terminal projects from the first surface in the third direction and corresponds to the concave portion. By providing the electrode terminal on the first surface and providing a concave portion corresponding to the electrode terminal at the edge of the fourth surface, the electrode terminals of adjacent battery cells can be accommodated through the concave portion, leaving an operating space for electrical connection, making the overall structure of the battery more compact and having a high space utilization rate.

[0027] In some embodiments of the present application, the battery cell includes an electrode assembly. The electrode assembly has a wound structure and is flat. The outer surface of the electrode assembly includes two flat surfaces. The two flat surfaces face each other along a third direction. Alternatively, the electrode assembly has a stacked structure. The first electrode plate, separator, and second electrode plate of the electrode assembly are stacked along a third direction. The third direction intersects both the first direction and the first surface. By installing the electrode assembly in a stacked structure or a wound structure, the electrode assembly can effectively supply power to the power-consuming device in either case.

[0028] In some embodiments of the present application, the battery assembly includes at least two battery cells, and the at least two battery cells are arranged along a first direction. When it is necessary to arrange at least two battery cells along the first direction and perform heat exchange on the battery cells, by installing a heat conduction member along the first direction, it is easy to perform heat exchange on at least two battery cells in the battery assembly respectively, thereby improving the heat exchange rate of the heat conduction member.

[0029] In some embodiments of the present application, along the first direction, the maximum size of the battery cell is L, along the second direction, the maximum size of the battery cell is H, the L / H range value is 0.5 to 6, and the second direction intersects both the first direction and the horizontal plane. By installing the battery cells in the above size ratio, while ensuring the support strength of the battery cells, the power of the battery cells can be maximally improved.

[0030] In some embodiments of the present application, along the third direction, the maximum size of the battery cell is D, where the L / D range value is 1 to 30, and the first direction, the second direction and the third direction intersect in pairs. By installing the battery cells in the above size ratio, while ensuring the support strength of the battery cells, the power of the battery cells can be maximally improved.

[0031] In some embodiments of the present application, the battery further includes a baffle installed opposite to the second surface provided with the electrode terminals of the battery cells along the second direction, and the distance between the electrode terminals and the baffle is 1.2 mm to 25 mm, and the second direction intersects both the first direction and the horizontal plane. By installing the baffle and the electrode terminals at an interval of 1.2 mm to 25 mm, when an impact occurs along the second direction of the battery, the baffle and the electrode terminals can receive the impact, thereby preventing damage to the electrode terminals.

[0032] In some embodiments of this application, at least one electrode terminal is located below the battery cell and the baffle is located below the electrode terminal, or at least one electrode terminal is located above the battery cell and the baffle is located above the electrode terminal. The baffle may be located below the battery cell along a second direction, or above the battery cell along a second direction, thereby enabling a reasonable mounting arrangement depending on the actual mounting location.

[0033] In some embodiments of this application, electrode terminals are provided on one second surface, the battery further includes a support plate, and the battery cells are fixedly connected to the support plate via another second surface on which electrode terminals are not provided, and the second direction intersects both the first direction and the horizontal plane. Fixing the battery cells within the housing via the support plate facilitates the installation and fixing of the battery cells.

[0034] In some embodiments of this application, another second surface is fixedly connected to a support plate via a first adhesive layer, and a heat conduction member is heat conductionally connected to the first surface via a second adhesive layer, and the thermal conductivity of the first adhesive layer is less than or equal to that of the second adhesive layer. Since the first adhesive layer is used to connect the second surface to the support plate, and the second adhesive layer is used to heat conductionally connect the first surface to the heat conduction member, setting the thermal conductivity of the first adhesive layer to less than or equal to that of the second adhesive layer ensures that the heat conduction member more effectively exchanges heat with the battery cell.

[0035] In some embodiments of this application, the ratio of the thermal conductivity of the first adhesive layer to the thermal conductivity of the second adhesive layer is in the range of 0.1 to 1. Setting the above ratio range allows the heat-conducting member to effectively exchange heat in the battery cell.

[0036] A second aspect of this application provides a power-consuming device including a battery as described in any one of the above-described items, the battery being used to provide electrical energy to power and move the power-consuming device.

[0037] In some embodiments of this application, when the longitudinal direction of the battery and the direction of travel of the power-consuming device are different, the first direction is the direction of travel of the power-consuming device. When the first direction is set to the direction of travel of the power-consuming device and the electrode terminals are provided on the second surface, the electrode terminals may be installed along the vertical direction or along the direction of travel of the power-consuming device, thereby preventing impact to the electrode terminals when the power-consuming device collides with the device along the lateral direction of travel, thereby avoiding damage to the electrode terminals and ensuring normal power supply from the battery. When the electrode terminals are provided on the first surface, since the first surface is the surface with the largest area, the occupancy rate of the electrode terminals on the first surface is small, and when an impact occurs to the power-consuming device, the electrode terminals are less likely to be impacted, thereby avoiding damage to the electrode terminals and ensuring normal power supply from the battery.

[0038] The above description is merely an outline of the proposed technology of this application. In order to better understand the technical means of this application, and to make the above and other objectives, features, and advantages of this application clearer and easier to understand, the following will describe specific embodiments of this application, which can be implemented according to the specifications. [Brief explanation of the drawing]

[0039] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become apparent to those skilled in the art. The drawings are used solely to illustrate the purpose of the preferred embodiments and are not intended to be considered limitations to this application. Throughout the drawings, the same components are indicated by the same reference numerals. In the drawings, [Figure 1] This is a schematic diagram of the structure of a vehicle according to one embodiment of this application. [Figure 2] This is a schematic diagram of the disassembled structure of a battery according to one embodiment of the present application. [Figure 3] This is a schematic diagram of the structure of a battery assembly according to one embodiment of this application. [Figure 4] This is a schematic diagram of the structure of a battery cell according to one embodiment of this application. [Figure 5] This is a schematic diagram of the disassembled structure of a battery cell according to one embodiment of this application. [Figure 6] This is a schematic diagram of the structure of a battery according to one embodiment of this application. [Figure 7] This is a schematic diagram of the disassembled structure of a battery according to one embodiment of the present application. [Figure 8] This is a schematic diagram of the structure of a battery assembly according to one embodiment of this application. [Figure 9] This is a schematic diagram of the structure of a battery assembly according to one embodiment of this application. [Figure 10] This is a schematic diagram of the structure of a battery assembly according to one embodiment of this application. [Figure 11] This is a schematic diagram of the structure of a battery cell according to one embodiment of this application. [Figure 12] This is a schematic diagram of the structure of a battery assembly according to one embodiment of this application. [Figure 13] This is a schematic diagram of the structure of a battery cell according to one embodiment of this application. [Figure 14] This is a schematic diagram of the structure of a battery assembly according to one embodiment of this application. [Figure 15] This is a schematic diagram of the structure of a battery assembly according to one embodiment of this application. [Figure 16] This is a schematic diagram of the structure of a battery cell according to one embodiment of this application. [Figure 17] This is a schematic diagram of the structure of a heat conductive member according to one embodiment of this application. [Figure 18] This is a schematic diagram of the structure of the second part according to one embodiment of this application. [Figure 19] This is a schematic diagram of the assembly structure of the second part and battery assembly according to one embodiment of the present application. [Figure 20] This is a schematic diagram of an enlarged structure of part A according to one embodiment of this application. [Figure 21] This is a schematic diagram of a BB cross-sectional structure according to one embodiment of this application. [Figure 22] This is a schematic diagram of an enlarged structure of part C according to one embodiment of this application. [Figure 23] This is a schematic diagram of the internal structure of the second part according to one embodiment of this application. [Figure 24]This is a schematic diagram of an enlarged structure of part D according to one embodiment of this application. [Figure 25] This is a schematic diagram of the battery distribution structure in a power consumption device according to one embodiment of this application. [Modes for carrying out the invention]

[0040] The following describes in detail embodiments of the technical invention of this application, accompanied by drawings. The following embodiments are used only as examples, for the purpose of more clearly illustrating the technical invention of this application, and are not intended to limit the scope of protection of this application.

[0041] It should be noted that, unless otherwise specified, technical or scientific terms used in the embodiments of this application should have the ordinary meaning as understood by those skilled in the art belonging to the embodiments of this application.

[0042] In the description of the embodiments of this application, the orientations or positional relationships indicated by technical terms such as "center," "vertical," "horizontal," "length," "width," "thickness," "top," "bottom," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" are orientations or positional relationships shown based on the drawings and are used solely to facilitate the description and simplification of the embodiments of this application. They do not indicate or imply that the mentioned devices or elements have a specific orientation or must be configured and operated in a specific orientation, and therefore should not be understood as limitations on the embodiments of this application.

[0043] Furthermore, technical terms such as "first," "second," etc., are merely descriptive and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features being referred to. In the description of embodiments of this application, unless otherwise explicitly and specifically limited, "multiple" means two or more.

[0044] In the description of the embodiments of this application, unless otherwise explicitly defined or limited, technical terms such as “attachment,” “connection,” “connection,” and “fixing” should be understood in a broad sense. For example, these may be fixed connections, removable connections, integral connections, mechanical connections, electrical connections, direct connections, indirect connections via an intermediate medium, internal communication between two elements, or interaction relationships between two elements. Those skilled in the art will be able to understand the specific meaning of these terms in the embodiments of this application depending on the specific circumstances.

[0045] In the description of embodiments of this application, unless otherwise explicitly defined or limited, "above" or "below" the second feature means that the first feature may be in direct contact with the second feature, or it may be indirectly in contact with the second feature via an intermediate medium. Furthermore, "above," "above," and "on the top surface" of the second feature means that the first feature is directly above or diagonally above the second feature, or simply that the horizontal height of the first feature is higher than that of the second feature. "Below," "below," and "on the bottom surface" of the second feature means that the first feature is directly below or diagonally below the second feature, or simply that the horizontal height of the first feature is lower than that of the second feature.

[0046] Currently, given the development of the market, the applications of power batteries are expanding more and more. Power batteries are used not only in energy storage and power systems such as hydroelectric, thermal, wind, and solar power plants, but also in electric transportation tools such as electric bicycles, electric motorcycles, and electric vehicles, as well as in multiple fields such as military equipment and aerospace. Lithium-ion batteries, with their advantages such as high energy density, high mean open-circuit voltage, and long cycle life, are already widely used in mobile and portable electrical appliances.

[0047] The inventors of this application have noticed that a battery contains multiple battery cells, each battery cell is provided with electrode terminals, and that the battery cells receive power through these electrode terminals. However, due to the placement of the electrode terminals, they are susceptible to impact during vehicle collisions, which can cause damage to the electrode terminals, affecting the normal power supply process of the battery cells and potentially posing a safety risk.

[0048] To solve the problem of damage to electrode terminals when an impact occurs to a vehicle, the inventors of this application have, through diligent research, designed a battery including a battery assembly, the battery assembly including at least one battery cell, the battery assembly being installed along a first direction, the first direction being the longitudinal direction of the battery or the direction of travel of a power-consuming device having the battery, the battery cell including a plurality of surfaces, the plurality of surfaces including a first surface having the largest area, the plurality of surfaces further including two second surfaces installed opposite to each other along a second direction, the second direction intersecting the first direction, the battery cell further including electrode terminals, the electrode terminals being provided on the first surface or at least one of the second surfaces.

[0049] According to the battery of this application, when the electrode terminals are provided on a second surface, the two second surfaces are positioned opposite each other along a second direction, and the second direction intersects with the first direction. That is, the electrode terminals are not provided at the longitudinal end of the battery or at the end in the direction of travel of the power-consuming device. If the power-consuming device experiences an impact along its direction of travel, the electrode terminals will not be affected by the impact, thereby avoiding damage to the electrode terminals and ensuring normal power supply from the battery. When the electrode terminals are provided on a first surface, since the first surface has the largest surface area, the occupancy rate of the electrode terminals on the first surface is small. If the power-consuming device experiences an impact, the electrode terminals are less likely to be affected by the impact, thereby avoiding damage to the electrode terminals and ensuring normal power supply from the battery.

[0050] This application provides a battery and a power-consuming device having the battery, which can be applied to various power-consuming devices that use batteries, such as mobile phones, portable devices, laptop computers, battery cars, electric toys, power tools, electric vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, aerospace vehicles and spacecraft, and the battery is used to provide electrical energy to the above power-consuming devices.

[0051] It should be understood that the technical solutions described in the embodiments of this application are applicable not only to the batteries and power-consuming devices described above, but also to all batteries and power-consuming devices that use batteries, including their housings. However, for the sake of brevity, the embodiments described below will all be explained using electric vehicles as examples.

[0052] Figure 1 is a schematic diagram of the structure of vehicle 1 according to several embodiments of this application. Figure 2 is a schematic diagram of the exploded structure of battery 10 according to one embodiment of this application. Figure 3 is a schematic diagram of the structure of battery assembly 20 according to one embodiment of this application. As shown in Figures 1 to 3, vehicle 1 may be a gasoline vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or a range extender vehicle. Battery 10 is installed inside vehicle 1, and battery 10 may be installed at the bottom, head, or tail of vehicle 1. Battery 10 may be used to supply power to vehicle 1, for example, battery 10 may be used as the operating power source for vehicle 1. Vehicle 1 may further include a controller 11 and a motor 12, the controller 11 being used to control battery 10 to supply power to motor 12, for example, to meet the power consumption requirements for starting vehicle 1, navigation, and driving.

[0053] In some embodiments of this application, the battery 10 can be used not only as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, providing driving power to the vehicle 1 in place of or in place of gasoline or natural gas.

[0054] To meet different power usage demands, the battery 10 may include a plurality of battery cells 21, where a battery cell 21 refers to the smallest unit constituting a battery assembly 20 or battery pack. The plurality of battery cells 21 may be connected in series and / or in parallel via electrode terminals for use in various application scenarios. The battery 10 referred to in this application is a battery pack. Here, the plurality of battery cells 21 may be connected in series, in parallel, or in series-parallel, where series-parallel refers to a mixture of series and parallel connections. The plurality of battery cells 21 in the embodiments of this application may directly constitute a battery pack, or they may first constitute a battery assembly 20, and then the battery assembly 20 may constitute a battery pack.

[0055] As shown in Figures 2 and 3, the battery 10 may include a plurality of battery assemblies 20 and a housing 30, the plurality of battery assemblies 20 being housed inside the housing 30. The housing 30 is used to house the battery cells 21 or the battery assemblies 20 to prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells 21. The housing 30 may be a simple three-dimensional structure such as a single rectangular parallelepiped, cylindrical or sphere, or a complex three-dimensional structure composed of a combination of simple three-dimensional structures such as rectangular parallelepipeds, cylindrical or spheres, and is not limited thereto in the embodiments of this application. The material of the housing 30 may be an alloy material such as an aluminum alloy or an iron alloy, a polymer material such as polycarbonate or polyisocyanurate foam, or a composite material of glass fiber with epoxy resin, and is not limited thereto in the embodiments of this application.

[0056] In some embodiments, the housing 30 may include a first portion 31 and a second portion 32, the first portion 31 and the second portion 32 overlapping each other, and the first portion 31, together with the second portion 32, defines a space for housing the battery cell 21. The second portion 32 is a hollow structure with one end open, and the first portion 31 may be a plate-like structure, with the first portion 31 overlapping the open side of the second portion 32, thereby defining a space for housing the battery cell 21 together with the second portion 32, and both the first portion 31 and the second portion 32 may be hollow structures with one end open, with the open side of the first portion 31 overlapping the open side of the second portion 32.

[0057] The battery assembly 20 may include a plurality of battery cells 21, which may first be connected in series, in parallel, or in series-parallel to form the battery assembly 20, and then further connected in series, in parallel, or in series-parallel to form the battery 10. The battery cells 21 may be cylindrical, flattened, rectangular parallelepiped, or have other shapes, and the embodiments of this application are not limited thereto. The battery cells 21 generally include cylindrical battery cores, prismatic battery cores, pouch-type battery cores, and polygonal prism-section battery cores, and are not limited thereto in the embodiments of this application. For brevity of description, the following embodiments will all be described using a rectangular lithium-ion battery cell 21 as an example.

[0058] Figure 4 is a schematic diagram of the structure of a battery cell 21 according to one embodiment of this application, and Figure 5 is a schematic diagram of the exploded structure of a battery cell 21 according to one embodiment of this application. The battery cell 21 is the smallest unit that constitutes the battery 10. As shown in Figures 4 and 5, the battery cell 21 includes an end cover 212, a case 211, and an electrode assembly 213.

[0059] The end cover 212 refers to a component that is placed over the opening of the case 211 to isolate the internal environment of the battery cell 21 from the external environment. The shape of the end cover 212 is not limited to that of the case 211 and may conform to the shape of the case 211. Selectively, the end cover 212 may be manufactured from a material having a certain hardness and strength (e.g., an aluminum alloy), so that the end cover 212 is less prone to deformation when pushed out and impacted, allowing the battery cell 21 to have higher structural strength and improved safety performance. Functional components such as electrode terminals 214 may be installed on the end cover 212. The electrode terminals 214 may be used to electrically connect to the electrode assembly 213 to output or input electrical energy from the battery cell 21. In some embodiments, the end cover 212 may further be equipped with a pressure relief mechanism to release internal pressure when the internal pressure or temperature of the battery cell 21 reaches a threshold. In some embodiments, an insulating material may be further installed inside the end cover 212 to isolate the end cover 212 from the electrical connection members in the case 211 and reduce the risk of short circuits. Exemplarily, the insulating material may be plastic, rubber, or the like.

[0060] The case 211 is an assembly that fits onto the end cover 212 to form the internal environment of the battery cell 21, which may be used to house the electrode assembly 213, electrolyte (not shown in the figure), and other components. The case 211 and the end cover 212 may be separate components, or an opening may be provided on the case 211, and the internal environment of the battery cell 21 is formed by covering the opening with the end cover 212 at the opening. The end cover 212 and the case 211 may be integrated, and moreover, the end cover 212 and the case 211 may first form a common connection surface before other components enter the case, and then the case 211 is placed over the end cover 212 when it is necessary to package the inside of the case 211. The case 211 may be of various shapes and sizes, for example, a rectangular parallelepiped, cylindrical shape, hexagonal prism shape, etc. Specifically, the shape of the case 211 may be determined according to the specific shape and size of the electrode assembly 213. The material of case 211 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, or plastic, and the embodiments of this application do not impose any particular limitations thereon.

[0061] The electrode assembly 213 is a component that generates an electrochemical reaction within the battery cell 21. The case 211 may contain one or more electrode assemblies 213. The electrode assembly 213 is mainly formed by winding or stacking positive and negative electrode plates, and generally a separator is provided between the positive and negative electrode plates. The portions of the positive and negative electrode plates that have active material constitute the main body of the electrode assembly 213, and the portions of the positive and negative electrode plates that do not have active material each constitute a tab (not shown in the figure). The positive electrode tab and the negative electrode tab may both be located at one end of the main body, or they may each be located at both ends of the main body. During charging and discharging of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tabs are connected to the electrode terminals 214 to form an electric current circuit.

[0062] Figure 6 is a schematic diagram of the structure of a battery 10 according to one embodiment of the present application, and Figure 7 is a schematic diagram of the exploded structure of a battery 10 according to one embodiment of the present application. As shown in Figures 3 to 7, in some embodiments of the present application, the battery 10 includes a battery assembly 20, the battery assembly 20 includes at least one battery cell 21, the battery assembly 20 is installed along a first direction, the first direction being the longitudinal direction of the battery 10 or the direction of travel of a power-consuming device having the battery 10, the battery cell 21 includes a plurality of surfaces, the plurality of surfaces including a first surface 2111 having the largest area, the plurality of surfaces further include two second surfaces 2121 installed opposite to each other along a second direction, the second direction intersects both the first direction and the horizontal plane, the battery cell 21 further includes electrode terminals 214, the electrode terminals 214 are provided on at least one of the second surfaces 2121.

[0063] Specifically, as shown in Figures 1, 3, 4, and 7, in some embodiments of this application, the battery cell 21 may be a rectangular battery cell 21, and the battery cell 21 includes two first surfaces 2111 that are positioned opposite each other along a first direction, two second surfaces 2121 that are positioned opposite each other along a second direction, and further includes two third surfaces 2112 that are positioned opposite each other along a third direction. Here, electrode terminals 214 are provided on the second surfaces 2121. Here, the first direction may be the longitudinal direction of the battery 10 or the direction of travel of the power consuming device 1, the second direction may be the vertical direction, and the third direction may be the width direction of the battery 10 or the lateral direction of the power consuming device 1.

[0064] When the electrode terminals 214 are provided on the second surface 2121, that is, when the electrode terminals 214 are installed along the vertical direction, if an impact occurs in the lateral direction of the power consuming device 1 in the direction of travel, the electrode terminals 214 will not be affected by the impact, thereby avoiding damage to the electrode terminals 214 and ensuring normal power supply of the battery 10.

[0065] Figure 8 is a schematic diagram of the structure of a battery assembly 20 according to one embodiment of the present application. As shown in Figures 1, 4, 7, and 8, in some embodiments of the present application, the battery cell 21 is a rectangular battery cell 21. The battery cell 21 includes two first surfaces 2111 that are positioned opposite each other along a third direction, two second surfaces 2121 that are positioned opposite each other along a second direction, and further includes two third surfaces 2112 that are positioned opposite each other along the first direction. Here, electrode terminals 214 are provided on the second surfaces 2121. Here, the first direction may be the longitudinal direction of the battery 10 or the direction of travel of the power consuming device 1, the second direction may be the vertical direction, and the third direction may be the width direction of the battery 10 or the lateral direction of the power consuming device 1.

[0066] When the electrode terminals 214 are provided on the second surface 2121, that is, when the electrode terminals 214 are installed along the vertical direction, if an impact occurs in the lateral direction of the power consuming device 1 in the direction of travel, the electrode terminals 214 will not be affected by the impact, thereby avoiding damage to the electrode terminals 214 and ensuring normal power supply of the battery 10.

[0067] Figure 9 is a schematic diagram of the structure of a battery assembly 20 according to one embodiment of the present application. As shown in Figures 1, 4, 7, and 9, in some embodiments of the present application, the battery cell 21 is a rectangular battery cell 21. The battery cell 21 includes two first surfaces 2111 that are positioned opposite each other along a second direction, two second surfaces 2121 that are positioned opposite each other along a first direction, and further includes two third surfaces 2112 that are positioned opposite each other along a third direction. Here, electrode terminals 214 are provided on the second surfaces 2121. Here, the first direction may be the longitudinal direction of the battery 10 or the direction of travel of the power consuming device 1, the second direction may be the vertical direction, and the third direction may be the width direction of the battery 10 or the lateral direction of the power consuming device 1.

[0068] When the electrode terminals 214 are provided on the second surface 2121, the two second surfaces 2121 are positioned opposite each other along the first direction, meaning that the electrode terminals 214 are located at the longitudinal end of the battery 10 or at the end of the power consuming device 1 in the direction of travel. Therefore, if an impact occurs along the lateral direction of the power consuming device 1 in the direction of travel, the electrode terminals 214 will not be affected by the impact, thereby avoiding damage to the electrode terminals 214 and ensuring normal power supply from the battery 10.

[0069] Figure 10 is a schematic diagram of the structure of a battery assembly 20 according to one embodiment of the present application, and Figure 11 is a schematic diagram of the structure of a battery cell 21 according to one embodiment of the present application. As shown in Figures 1, 7, 10 and 11, in some embodiments of the present application, the battery cell 21 is a cylindrical battery cell 21. The battery cell 21 includes one cylindrical first surface 2111 and two second surfaces 2121 that are positioned opposite each other along a second direction. Here, electrode terminals 214 are provided protruding from one of the second surfaces 2121. Here, the first direction may be the longitudinal direction of the battery 10 or the direction of travel of the power consuming device 1, and the second direction may be the vertical direction.

[0070] When the electrode terminals 214 are provided on the second surface 2121, that is, when the electrode terminals 214 are installed along the vertical direction, if an impact occurs in the lateral direction of the power consuming device 1 in the direction of travel, the electrode terminals 214 will not be affected by the impact, thereby avoiding damage to the electrode terminals 214 and ensuring normal power supply of the battery 10.

[0071] Figure 12 is a schematic diagram of the structure of a battery assembly 20 according to one embodiment of the present application, and Figure 13 is a schematic diagram of the structure of a battery cell according to one embodiment of the present application. As shown in Figures 1, 7, 12 and 13, in some embodiments of the present application, the battery cell 21 is a rectangular battery cell 21. The battery cell 21 includes two first surfaces 2111 that are positioned opposite each other along a third direction, two second surfaces 2121 that are positioned opposite each other along a first direction, and further includes two third surfaces 2112 that are positioned opposite each other along a second direction. Here, electrode terminals 214 are provided on the second surfaces 2121. Here, the first direction may be the longitudinal direction of the battery 10 or the direction of travel of the power consuming device 1, the second direction may be the vertical direction, and the third direction may be the width direction of the battery 10 or the lateral direction of the power consuming device 1.

[0072] When the electrode terminals 214 are provided on the second surface 2121, that is, when the electrode terminals 214 are installed at the longitudinal end of the battery 10 or at the end of the power consuming device 1 in the direction of travel, if an impact occurs along the side of the power consuming device 1 in the direction of travel, the electrode terminals 214 will not be affected by the impact, thereby avoiding damage to the electrode terminals 214 and ensuring normal power supply from the battery 10.

[0073] Figure 14 is a schematic diagram of the structure of a battery assembly according to one embodiment of the present application. As shown in Figures 1, 7, 13 and 14, in some embodiments of the present application, the battery cell 21 is a rectangular battery cell 21. The battery cell 21 includes two first surfaces 2111 that are positioned opposite each other along a second direction, two second surfaces 2121 that are positioned opposite each other along a first direction, and further includes two third surfaces 2112 that are positioned opposite each other along a third direction. Here, at least one of the second surfaces 2121 is provided with electrode terminals 214. Here, the first direction may be the longitudinal direction of the battery 10 or the direction of travel of the power consuming device 1, the second direction may be the width direction of the battery 10 or the lateral direction of the power consuming device 1, and the third direction may be the vertical direction.

[0074] When the electrode terminals 214 are provided on the second surface 2121, that is, when the electrode terminals 214 are installed at the longitudinal end of the battery 10 or at the end of the power consuming device 1 in the direction of travel, if an impact occurs along the lateral direction of travel of the power consuming device 1, the electrode terminals 214 will not be hit, thereby avoiding damage to the electrode terminals 214 and ensuring normal power supply of the battery 10.

[0075] Figure 15 is a schematic diagram of the structure of a battery assembly according to one embodiment of the present application, and Figure 16 is a schematic diagram of the structure of a battery cell according to one embodiment of the present application. As shown in Figures 1, 7, 15 and 16, in some embodiments of the present application, the battery cell 21 is a rectangular battery cell 21. The battery cell 21 includes two first surfaces 2111 that are positioned opposite each other along a third direction, two second surfaces 2121 that are positioned opposite each other along a second direction, and further includes two third surfaces 2112 that are positioned opposite each other along the first direction. Here, electrode terminals 214 are provided on the first surfaces 2111. Here, the first direction may be the longitudinal direction of the battery 10 or the direction of travel of the power consuming device 1, the second direction may be the vertical direction, and the third direction may be the width direction of the battery 10 or the lateral direction of the power consuming device 1.

[0076] When the electrode terminals 214 are provided on the first surface 2111, the first surface 2111 is the largest surface area, so the occupancy rate of the electrode terminals 214 on the first surface 2111 is small. Therefore, if an impact occurs on the power consuming device 1, the electrode terminals 214 are less likely to be affected by the impact, thereby avoiding damage to the electrode terminals 214 and ensuring normal power supply of the battery 10.

[0077] According to the battery 10 of this application, when the electrode terminals 214 are provided on the second surface 2121, the electrode terminals 214 may be installed along the vertical direction or along the direction of travel of the power consuming device 1, thereby preventing impact to the electrode terminals 214 when the power consuming device 1 collides with it along the lateral direction of travel, thereby avoiding damage to the electrode terminals 214 and ensuring normal power supply of the battery 10. When the electrode terminals 214 are provided on the first surface 2111, since the first surface 2111 is the surface with the largest area, the occupancy rate of the electrode terminals 214 on the first surface 2111 is small, so when an impact occurs on the power consuming device 1, the electrode terminals 214 are less likely to be impacted, thereby avoiding damage to the electrode terminals 214 and ensuring normal power supply of the battery 10.

[0078] As shown in Figures 4 and 8, in some embodiments of this application, the first surface 2111 intersects with the horizontal plane.

[0079] Specifically, in some embodiments of this application, the first surface 2111 may be oriented vertically.

[0080] As shown in Figures 10 and 11, in some embodiments of this application, the first surface 2111 intersects with the horizontal plane.

[0081] As shown in Figures 12 and 13, in some embodiments of this application, the first surface 2111 intersects with the horizontal plane.

[0082] As shown in Figures 15 and 16, in some embodiments of this application, the first surface 2111 intersects with the horizontal plane.

[0083] Since the first surface 2111 is the surface with the largest area of ​​battery cells 21, the first surface 2111 can be made to intersect with the horizontal plane, maximizing the number of battery cells 21 arranged in the horizontal plane, thereby improving the overall energy density of the battery 10.

[0084] Figure 17 is a schematic diagram of the structure of a heat conduction member 40 according to one embodiment of the present application. As shown in Figures 4, 7, 8 and 17, some embodiments of the present application further include a heat conduction member 40 which is installed along a first direction, and each battery cell 21 of the battery assembly 20 is thermally conductively connected to the heat conduction member 40 via at least a first surface 2111.

[0085] Specifically, the heat conduction member 40 can be heat conductionally connected to the battery cell 21, and heat exchange with the battery cell 21 is achieved by conducting heat from the battery cell 21 to the heat conduction member 40. Here, heat exchange with the battery cell 21 includes cooling heat dissipation to the battery cell 21 or heating to the battery cell 21. The heat conduction member 40 may be a heat conduction plate, a heat conduction adhesive or a heat conduction structure, and in some embodiments, the heat conduction plate may be a metal plate, such as a copper plate or an aluminum plate, or other material with a relatively high thermal conductivity. In some embodiments, a cavity may be provided inside the heat conduction member. In some embodiments of this application, the heat conduction member 40 is a heat conduction plate. The first surface 2111 is heat conductionally connected to the heat conduction member 40, and the first surface 2111 intersects the horizontal plane, and therefore the heat conduction member 40 also intersects the horizontal plane. In some embodiments of this application, the heat conduction member 40 is installed along the vertical direction and extends in the first direction.

[0086] As shown in Figures 4, 7, 8, and 17, the heat conduction member 40 is positioned along a first direction and intersects the horizontal plane, and the battery cell 21 is heat conduction connected to the heat conduction member 40 via the first surface 2111.

[0087] As shown in Figures 7, 10, 11, and 17, in some embodiments of this application, the heat conduction member 40 is positioned along a first direction and intersects the horizontal plane, and the battery cell 21 is thermally conductively connected to the heat conduction member 40 via the first surface 2111.

[0088] As shown in Figures 7, 15, 16, and 17, in some embodiments of this application, the heat conduction member 40 is positioned along a first direction and intersects the horizontal plane, and the battery cell 21 is thermally conductively connected to the heat conduction member 40 via the first surface 2111.

[0089] The heat conduction member 40 is installed along a first direction, allowing heat exchange to occur with any of the battery cells 21 in the battery assembly 20. At the same time, when the power consuming device 1 collides with the heat conduction member 40 along a lateral direction, the impact force does not directly act on the end of the heat conduction member 40, thus avoiding damage to the heat conduction member 40. Simultaneously, the battery cells 21 are heat-conductively connected to the heat conduction member 40 via the first surface 2111, ensuring the maximum contact area between the heat conduction member 40 and the battery cells 21, thereby guaranteeing the heat exchange effect of the heat conduction member 40 with respect to the battery cells 21.

[0090] Figure 18 is a schematic diagram of the structure of the second part 32 according to one embodiment of the present application, Figure 19 is a schematic diagram of the assembled structure of the second part 32 and the battery assembly 20 according to one embodiment of the present application, and Figure 20 is an enlarged schematic diagram of the structure of part A according to one embodiment of the present application. As shown in Figures 4, 8, 18, 19 and 20, in some embodiments of the present application, the battery 10 includes at least two battery assemblies 20, and both sides of the heat conduction member 40 are heat conductionally connected to the two battery assemblies 20, respectively, along a third direction, and the third direction intersects both the first direction and the first surface 2111.

[0091] Specifically, the heat conduction member 40 is provided between the two battery assemblies 20 and is heat-conductively connected to each of the two battery assemblies 20. Here, the third direction is the width direction of the battery 10 or the lateral direction of the travel direction of the power-consuming device 1. By heat-conductively connecting both sides of the heat conduction member 40 to the first surface 2111 of the battery cell 21, the heat exchange effect of the heat conduction member 40 with respect to the battery cell 21 is improved.

[0092] As shown in Figures 10, 11, 18, 19 and 20, in some embodiments of the present application, the battery 10 includes at least two battery assemblies 20, and both sides of the heat conduction member 40 are heat conductionally connected to the two battery assemblies 20, respectively, along a third direction, and the third direction intersects both the first direction and the first surface 2111.

[0093] As shown in Figures 1 and 19, in some embodiments of this application, the longitudinal direction of the battery 10 is parallel to or intersects with the direction of travel of the power consuming device 1.

[0094] Specifically, in some embodiments of this application, the longitudinal direction of the battery 10 may be installed parallel to the direction of travel of the power consuming device 1, and in such a case the heat conductive member 40 is installed along the longitudinal direction of the battery 10, both ends of the heat conductive member 40 are provided at both ends in the longitudinal direction of the battery 10, that is, at both ends in the direction of travel of the power consuming device 1, so that when the power consuming device 1 collides along the side, the impact force does not directly act on the ends of the heat conductive member 40, thereby preventing damage to the heat conductive member 40 and ensuring the safety and reliability of the use of the battery 10.

[0095] In some embodiments of this application, the battery 10 may be installed at the corner where its longitudinal direction meets the direction of travel of the power-consuming device 1, and power can still be supplied to the power-consuming device 1 via the battery 10, thereby facilitating the installation of the battery 10.

[0096] As shown in Figures 17 to 20, in some embodiments of this application, a heat exchange medium passage is provided within the heat conduction member 40.

[0097] The heat exchange medium passage is used to circulate the heat exchange medium, thereby removing heat released from the battery cell 21 by the flow of the heat exchange medium, or heating the battery cell 21, and further improving the heat exchange efficiency of the battery cell 21. Here, the heat exchange medium may be a heat exchange liquid, and specifically an oil liquid or a water liquid may be used.

[0098] Figure 21 is a schematic diagram of the BB cross-sectional structure according to one embodiment of the present application, and Figure 22 is a schematic diagram of the enlarged structure of section C according to one embodiment of the present application. As shown in Figures 4, 8, 19, 20, 21 and 22, in some embodiments of the present application, the battery 10 includes a plurality of heat conductive members 40, the plurality of heat conductive members 40 are arranged along a third direction, the third direction intersects both the first direction and the first surface 2111.

[0099] As shown in Figures 10, 11, 19, 20, 21, and 22, in some embodiments of this application, the battery 10 includes a plurality of heat conductive members 40, the plurality of heat conductive members 40 arranged along a third direction, the third direction intersects both the first direction and the first surface 2111.

[0100] As shown in Figures 12, 13, 19, 20, 21, and 22, in some embodiments of the present application, the battery 10 includes a plurality of heat conductive members 40, the plurality of heat conductive members 40 arranged along a third direction, the third direction intersects both the first direction and the first surface 2111.

[0101] As shown in Figures 15, 16, 19, 20, 21 and 22, in some embodiments of the present application, the battery 10 includes a plurality of heat conductive members 40, the plurality of heat conductive members 40 arranged along a third direction, the third direction intersects both the first direction and the first surface 2111.

[0102] Specifically, the first direction is the longitudinal direction of the battery 10, and the third direction is the width direction of the battery 10. Multiple heat conductive members 40 are arranged along the third direction and are heat-conductively connected to the first surface 2111 of the battery cell 21 via the multiple heat conductive members 40, and are used to dissipate heat from the battery 10 together, effectively improving the heat exchange rate to the battery 10.

[0103] As shown in Figures 4, 8, 19, 20, 21, and 22, in some embodiments of this application, heat conduction members 40 are provided on both sides of the battery assembly 20 along a third direction, and the battery assembly 20 is thermally conductively connected to the heat conduction members 40 on both sides.

[0104] As shown in Figures 10, 11, 19, 20, 21, and 22, in some embodiments of this application, heat conduction members 40 are provided on both sides of the battery assembly 20 along a third direction, and the battery assembly 20 is thermally conductively connected to the heat conduction members 40 on both sides.

[0105] As shown in Figures 12, 13, 19, 20, 21, and 22, in some embodiments of this application, heat conduction members 40 are provided on both sides of the battery assembly 20 along a third direction, and the battery assembly 20 is thermally conductively connected to the heat conduction members 40 on both sides.

[0106] As shown in Figures 15, 16, 19, 20, 21, and 22, in some embodiments of this application, heat conduction members 40 are provided on both sides of the battery assembly 20 along a third direction, and the battery assembly 20 is thermally conductively connected to the heat conduction members 40 on both sides.

[0107] By simultaneously making thermal conduction connections between both sides of the battery assembly 20 and the thermal conduction member 40, heat is dissipated simultaneously through both sides of the battery assembly 20, effectively improving the heat exchange rate with respect to the battery 10.

[0108] As shown in Figures 4, 8, 19, 20, 21 and 22, in some embodiments of this application, along a third direction, the battery cell 21 includes two opposing first surfaces 2111, and each of the two first surfaces 2111 of the battery cell 21 is thermally conductively connected to a single thermal conductive member 40.

[0109] As shown in Figures 12, 13, 19, 20, 21, and 22, in some embodiments of this application, along a third direction, the battery cell 21 includes two opposing first surfaces 2111, and each of the two first surfaces 2111 of the battery cell 21 is thermally conductively connected to a single thermal conductive member 40.

[0110] If the battery cell 21 has two first surfaces 2111 with the largest surface area, the heat exchange rate to the battery 10 is effectively improved by simultaneously dissipating heat from the two first surfaces 2111.

[0111] As shown in Figures 4, 5, 8, 21 and 22, in some embodiments of the present application, the battery cell 21 includes an electrode assembly 213, the electrode assembly 213 includes a body portion 2131 and tabs 2132 protruding from the body portion 2131, the tabs 2132 being electrically connected to electrode terminals 214, and along a third direction, the projections of the heat conduction member 40 and the body portion 2131 overlap at least partially, and the third direction intersects both the first direction and the first surface 2111.

[0112] Specifically, the heat conductive member 40 extends along a first direction and is provided on the side surface of the battery cell 21 along a third direction. Here, the first direction is the longitudinal direction of the battery cell 21, and the third direction is the width direction of the battery cell 21.

[0113] As shown in Figures 10, 11, 21, and 22, in some embodiments of the present application, the battery cell 21 includes an electrode assembly 213, the electrode assembly 213 includes a body portion 2131 and tabs 2132 protruding from the body portion 2131, the tabs 2132 being electrically connected to electrode terminals 214, and along a third direction, the projections of the heat conduction member 40 and the body portion 2131 overlap at least partially, and the third direction intersects both the first direction and the first surface 2111.

[0114] Specifically, the heat conductive member 40 extends along a first direction and is provided on the side surface of the battery cell 21 along a third direction. Here, the first direction is the direction of travel of the power consuming device 1, and the third direction is the radial direction of the battery cell 21.

[0115] As shown in Figures 12, 13, 21 and 22, in some embodiments of the present application, the battery cell 21 includes an electrode assembly 213, the electrode assembly 213 includes a body portion 2131 and tabs 2132 protruding from the body portion 2131, the tabs 2132 being electrically connected to electrode terminals 214, and along a third direction, the projections of the heat conduction member 40 and the body portion 2131 overlap at least partially, and the third direction intersects both the first direction and the first surface 2111.

[0116] Specifically, the heat conductive member 40 extends along a first direction and is provided on the side surface of the battery cell 21 along a third direction. Here, the first direction is the longitudinal direction of the battery cell 21, and the third direction is the width direction of the battery cell 21.

[0117] As shown in Figures 15, 16, 21 and 22, in some embodiments of the present application, the battery cell 21 includes an electrode assembly 213, the electrode assembly 213 includes a body portion 2131 and tabs 2132 protruding from the body portion 2131, the tabs 2132 being electrically connected to electrode terminals 214, and along a third direction, the projections of the heat conduction member 40 and the body portion 2131 overlap at least partially, and the third direction intersects both the first direction and the first surface 2111.

[0118] Specifically, the heat conductive member 40 extends along a first direction and is provided on the side surface of the battery cell 21 along a third direction. Here, the first direction is the direction of travel of the power consuming device 1, and the third direction is the lateral direction of the power consuming device 1.

[0119] By installing the heat conductive member 40 and the main body 2131 so that they overlap at least partially along the second direction, the heat conductive member 40 can effectively exchange heat with the main body 2131, thereby ensuring a heat exchange effect with the battery 10.

[0120] As shown in Figures 4, 5, 8, 21 and 22, in some embodiments of this application, along the second direction, the size of the main body 2131 is L1, the size of the heat conductive member 40 is L2, and 0.5 ≤ L2 / L1 ≤ 1.5, where the first, second, and third directions intersect in pairs.

[0121] Specifically, the first direction is the longitudinal direction of the battery cell 21, and the second direction is the height direction of the battery cell 21.

[0122] As shown in Figures 10, 11, 21, and 22, in some embodiments of this application, along the second direction, the size of the main body 2131 is L1, the size of the heat conductive member 40 is L2, and 0.5 ≤ L2 / L1 ≤ 1.5, where the first, second, and third directions intersect in pairs.

[0123] Specifically, the first direction is the direction of travel of the power-consuming device 1, and the second direction is the height direction of the battery cell 21.

[0124] As shown in Figures 12, 13, 21, and 22, in some embodiments of this application, along the second direction, the size of the main body 2131 is L1, the size of the heat conductive member 40 is L2, and 0.5 ≤ L2 / L1 ≤ 1.5, where the first, second, and third directions intersect in pairs.

[0125] Specifically, the first direction is the direction of travel of the power-consuming device 1, and the second direction is the height direction of the battery cell 21.

[0126] As shown in Figures 15, 16, 21, and 22, in some embodiments of this application, along the second direction, the size of the main body 2131 is L1, the size of the heat conductive member 40 is L2, and 0.5 ≤ L2 / L1 ≤ 1.5, where the first, second, and third directions intersect in pairs.

[0127] Specifically, the first direction is the direction of travel of the power-consuming device 1, and the second direction is the height direction of the battery cell 21.

[0128] The L2 / L1 range value is set to be greater than 0.5 and less than 1.5 to ensure that the heat conduction member 40 has a sufficient heat conduction area, thereby performing heat exchange with the main body 2131 and significantly enhancing the heat exchange effect of the heat conduction member 40 with respect to the main body 2131.

[0129] It should be understood that if L2 / L1 is less than 0.5, the size of the heat conduction member 40 becomes too small, making it impossible to perform effective heat exchange with the battery cell 21. If L2 / L1 is greater than 1.5, the size of the heat conduction member 40 becomes relatively large, which tends to occupy space in the battery 10, making it unfavorable to improving the space utilization rate of the battery 10.

[0130] It should be noted that in some embodiments of this application, the value of L2 / L1 may be 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4...1.5.

[0131] As shown in Figures 4, 5, 8, 21, and 22, in some embodiments of this application, along the second direction, the size of the overlapping region is L3, and 0.5 ≤ L3 / L1 ≤ 1.

[0132] It should be understood that if L3 / L1 is less than 0.5, the overlapping area between the heat conductive member 40 and the main body 2131 is too small, resulting in poor heat exchange effect of the heat conductive member 40 with respect to the battery cell 21, and effectively ensuring heat dissipation to the battery cell 21 cannot be guaranteed.

[0133] It should be noted that in some embodiments of this application, the value of L3 / L1 may be 0.5, 0.6, 0.7, 0.8, 0.9...1.

[0134] By setting the size in the second direction of the overlapping region, the heat exchange area between the heat conduction member 40 and the main body 2131 can be appropriately set, and the heat exchange effect of the heat conduction member 40 on the main body 2131 can be greatly enhanced.

[0135] As shown in Figures 19 and 20, in some embodiments of this application, the battery 10 further includes a current collector 50, the current collector 50 is in fluid communication with a plurality of heat conductive members 40, Here, a current collector 50 is provided at one end of the heat conduction member 40 located in the first direction, or current collectors 50 are provided at both ends of the heat conduction member 40 located in the first direction. The current collector 50 is used to supply or collect the heat exchange medium in the heat exchange medium passage, thereby being used to exchange heat with the battery 10.

[0136] Specifically, since multiple heat conductive members 40 are installed either along the longitudinal direction of the battery 10 or along the direction of travel of the power consuming device 1, the current collector 50 is provided at one end of the battery 10 in the longitudinal direction or at the end of the power consuming device 1 in the direction of travel in order to facilitate fluid communication with the multiple heat conductive members 40 via the current collector 50, and the current collector 50 is installed at one end or both ends as required in practice.

[0137] The current collector 50 is provided at the first-direction end of the heat conduction member 40, so that when the power consuming device 1 collides with something along the side, the impact force does not directly act on the current collector 50 at the end of the power consuming device 1 in the direction of travel, thereby preventing damage to the current collector 50 and ensuring the safety and reliability of the battery 10.

[0138] As shown in Figures 19 and 20, in some embodiments of this application, there are two current collectors 50, the two current collectors 50 are provided at one end of the heat conduction member 40 located in a first direction, and the two current collectors 50 are arranged along a second direction, the second direction intersects both the first direction and the horizontal plane.

[0139] Specifically, in some embodiments of this application, the second direction may be the vertical direction, that is, the two current collectors 50 are installed at an interval along the vertical direction. Here, the two current collectors 50 may be a water supply current collector and a drainage current collector, respectively.

[0140] The two current collectors 50 are provided together at one end in the first direction and arranged along the second direction, which effectively reduces the space occupied by the current collectors 50 within the battery 10 along the first direction, thereby facilitating the installation of other structures within the battery 10 and improving the energy density of the battery. Furthermore, the two current collectors are provided together at one end in the first direction, which reduces the probability of damage to the current collectors in the event of a collision facing the first direction.

[0141] As shown in Figures 3 and 4, in some embodiments of this application, the electrode terminal 214 includes two electrode terminals 214 with opposite polarity, and the two electrode terminals 214 are provided on one second surface 2121, or the two electrode terminals 214 are provided on two second surfaces, respectively. In some embodiments, one of the two electrode terminals 214 may be formed by the case 211 of the battery cell 21.

[0142] Specifically, as shown in Figures 3 and 4, the battery cell 21 includes two electrode terminals 214, and both electrode terminals 214 are provided on the same second surface 2121 along a second direction. Here, the second direction may be vertical. In some embodiments of this application, the two electrode terminals 214 may each be provided on two second surfaces 2121.

[0143] As shown in Figures 3 and 8, the battery cell 21 includes two electrode terminals 214, and both electrode terminals 214 are provided on the same second surface 2121 along a second direction, where the second direction may be vertical. In some embodiments of this application, the two electrode terminals 214 may each be provided on two second surfaces 2121.

[0144] As shown in Figures 3 and 9, the battery cell 21 includes two electrode terminals 214, and both electrode terminals 214 are provided on the same second surface 2121 along a first direction, where the first direction is the longitudinal direction of the battery 10 or the direction of travel of the power consuming device 1. In some embodiments of this application, the two electrode terminals 214 may each be provided on two second surfaces 2121.

[0145] As shown in Figures 10 and 11, the battery cell 21 includes two electrode terminals 214, and the two electrode terminals 214 are provided on two second surfaces 2121, each along a second direction, where one electrode terminal 214 is coplanar with the end face of the battery cell 21, and the end of the battery cell 21 is the electrode terminal 214. Here, the second direction is the vertical direction.

[0146] As shown in Figures 12 and 13, the battery cell 21 includes two electrode terminals 214, and the two electrode terminals 214 are provided on two second surfaces 2121, each along a first direction. Here, the first direction is the longitudinal direction of the battery 10 or the direction of travel of the power-consuming device 1. Alternatively, the two electrode terminals 214 may be provided together on a single second surface 2121.

[0147] As shown in Figures 13 and 14, the battery cell 21 includes two electrode terminals 214, and the two electrode terminals 214 are provided on two second surfaces 2121, each along a first direction. Here, the first direction is the longitudinal direction of the battery 10 or the direction of travel of the power-consuming device 1. Alternatively, the two electrode terminals 214 may be provided together on a single second surface 2121.

[0148] By providing two electrode terminals 214 with opposite polarity on the same second surface 2121 of the battery cell 21 as needed, or on two separate second surfaces 2121, the electrode terminals 214 avoid the first surface 2111 which exchanges heat with the heat conductive member 40, and facilitate subsequent electrical connection with other adjacent battery cells 21.

[0149] As shown in Figures 3 and 4, in some embodiments of the present application, the battery cell 21 includes a pressure relief mechanism 215, wherein the pressure relief mechanism 215 and at least one electrode terminal 214 are provided on the same second surface 2121, or the pressure relief mechanism 215 and the electrode terminal 214 are provided on two second surfaces 2121, respectively.

[0150] Specifically, as shown in Figures 3 and 4, the battery cell 21 further includes a pressure relief mechanism 215, the pressure relief mechanism 215 and two electrode terminals 214 are provided together on the same second surface 2121 along a second direction, where the second direction is vertical. In some embodiments of this application, the pressure relief mechanism 215 is provided on one second surface 2121 along a second direction and the two electrode terminals 214 are provided together on another second surface 2121 along a second direction, or the two electrode terminals 214 are each provided on two second surfaces 2121 along a second direction and the pressure relief mechanism 215 is provided together on one of the electrode terminals 214 and one of the second surfaces 2121.

[0151] As shown in Figures 10 and 11, the battery cell 21 further includes a pressure relief mechanism 215, on which an electrode terminal 214 protrudes from one of its second surfaces 2121, and the pressure relief mechanism 215 is provided on both the protruding electrode terminal 214 and the second surface 2121, or on which an electrode terminal 214 protrudes from one of its second surfaces 2121 and the pressure relief mechanism 215 is provided on the other second surface 2121 on which the electrode terminal 214 does not protrude.

[0152] As shown in Figures 12 and 13, the battery cell further includes a pressure relief mechanism 215, where two electrode terminals 214 are provided on two second surfaces 2121 along a first direction, and the pressure relief mechanism 215 is provided on both one of the electrode terminals 214 and one of its second surfaces, where the first direction is the longitudinal direction of the battery 10 or the direction of travel of the power consuming device 1. Alternatively, the pressure relief mechanism 215 is provided on one second surface 2121 along the first direction, and the two electrode terminals 214 are provided together on another second surface 2121 along the first direction, or the two electrode terminals 214 and the pressure relief mechanism 215 are provided together on one of its second surfaces 2121.

[0153] The pressure relief mechanism 215 communicates with the inside of the battery cell 21 and is used to release the internal pressure when the internal pressure of the battery cell 21 rises. The pressure relief mechanism 215 may be provided on the same second surface 2121 as the electrode terminals 214 as necessary, or on two separate second surfaces 2121, thereby allowing the pressure relief mechanism 215 to avoid the first surface 2111 which exchanges heat with the heat conductive member 40, and to smoothly exhaust pressure in the event of thermal runaway in the battery cell 21.

[0154] As shown in Figures 1, 15, and 16, in some embodiments of this application, the electrode terminal 214 is provided on the first surface 2111.

[0155] Specifically, the battery cell 21 includes two electrode terminals 214, both of which are provided on the first surface 2111. Here, the longitudinal direction of the battery cell 21 is aligned with the first direction, which is the longitudinal direction of the battery 10 or the direction of travel of the power-consuming device 1.

[0156] By providing the electrode terminals 214 on the first surface 2111, the space occupied by the battery 10 along the second direction can be saved, and the energy density of the battery 10 can be further improved.

[0157] As shown in Figures 15 and 16, in some embodiments of the present application, the battery cell 21 includes a first surface 2111 and a fourth surface positioned opposite the first surface 2111, the first surface 2111 and the fourth surface positioned opposite each other along a third direction, the third direction intersects both the first direction and the first surface 2111, the edge of the fourth surface is provided with a recess, the first surface 2111 is used to mount electrode terminals 214, the electrode terminals 214 protrude from the first surface 2111 in the third direction and correspond to the recess.

[0158] Specifically, as shown in Figures 1, 15, and 16, the longitudinal direction of the battery cell 21 is aligned with a first direction, and the battery cell 21 includes a first surface 2111 and a fourth surface which are positioned opposite each other along a third direction, with a recess provided at the edge of the fourth surface, and the first surface 2111 is used for mounting electrode terminals 214.

[0159] By providing electrode terminals 214 on the first surface 2111 and recesses corresponding to the electrode terminals 214 on the edge of the fourth surface, the electrode terminals 214 of adjacent battery cells 21 are accommodated through the recesses, leaving operating space for electrical connection, making the overall structure of the battery 10 more compact and increasing space utilization. As shown in Figures 4, 5 and 8, in some embodiments of this application, the battery cell 21 includes an electrode assembly 213, the electrode assembly 213 has a wound structure and is flattened, the outer surface of the electrode assembly 213 includes two flattened surfaces, the two flattened surfaces facing each other along a third direction, or the electrode assembly 213 has a laminated structure, the first electrode plate, separator and second electrode plate of the electrode assembly 213 are laminated along a third direction, the third direction intersects both the first direction and the first surface.

[0160] By installing the electrode assembly 213 in either a stacked or wound structure, power can be effectively supplied to the power-consuming device 1 by the electrode assembly 213.

[0161] As shown in Figures 3, 4 and 7, in some embodiments of the present application, the battery assembly 20 includes at least two battery cells 21, the at least two battery cells 21 being arranged along a first direction.

[0162] As shown in Figures 4, 7, and 8, in some embodiments of the present application, the battery assembly 20 includes at least two battery cells 21, the at least two battery cells 21 being arranged along a first direction.

[0163] As shown in Figures 4, 7, and 9, in some embodiments of this application, the battery assembly 20 includes at least two battery cells 21, the at least two battery cells 21 arranged along a first direction. For illustrative purposes, Figure 9 illustrates only one battery cell 21 along the first direction.

[0164] As shown in Figures 7, 10, and 11, in some embodiments of the present application, the battery assembly 20 includes at least two battery cells 21, the at least two battery cells 21 being arranged along a first direction.

[0165] As shown in Figures 7, 12, and 13, in some embodiments of this application, the battery assembly 20 includes at least two battery cells 21, the at least two battery cells 21 arranged along a first direction. For the purposes of this explanation, only one battery cell 21 is illustrated in Figure 12 along the first direction.

[0166] As shown in Figures 7, 13, and 14, in some embodiments of this application, the battery assembly 20 includes at least two battery cells 21, the at least two battery cells 21 arranged along a first direction. For the purposes of this explanation, only one battery cell 21 is illustrated along the first direction in Figure 14.

[0167] As shown in Figures 7, 15, and 16, in some embodiments of this application, the battery assembly 20 includes at least two battery cells 21, the at least two battery cells 21 arranged along a first direction. For the purposes of this explanation, only one battery cell 21 is illustrated in Figure 15 along the first direction.

[0168] As shown in Figures 7, 16, and 17, in some embodiments of the present application, the battery assembly 20 includes at least two battery cells 21, the at least two battery cells 21 being arranged along a first direction.

[0169] When at least two battery cells 21 are arranged along a first direction and heat exchange is required for the battery cells 21, installing the heat conduction member 40 along the first direction facilitates heat dissipation to at least two battery cells 21 within the battery assembly 20, thereby improving the heat exchange rate of the heat conduction member 40.

[0170] As shown in Figures 4, 8, 10, 11, 15, and 16, in some embodiments of this application, the maximum size of the battery cell 21 is L along the first direction, and the maximum size of the battery cell 21 is H along the second direction, with the L / H range value being 0.5 to 6, and the second direction intersects both the first direction and the horizontal plane.

[0171] Here, if the battery cell 21 is shown in Figure 4 or Figure 16, L / H has a maximum size ratio of 6, and if the battery cell 21 is shown in Figure 11, L / H has a minimum size ratio of 0.5.

[0172] If the L / H size ratio is greater than 6, the size of the battery cell 21 along the first direction becomes too large, making it difficult to install and simultaneously reducing the support strength of the battery cell 21. If the L / H size ratio is less than 0.5, the size of the battery cell 21 along the second direction becomes too large, making it difficult to install and simultaneously reducing the support strength of the battery cell 21.

[0173] It should be noted that the L / H value may be 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4...5, 5.5...6. By setting L / H to different values, the battery cells 21 can be given different shapes, and the demand for batteries 10 of different types can be met.

[0174] The maximum size H of the battery cell 21 includes both the size of the case 211 and the size of the electrode terminals 214 protruding from the case 211. The battery cell 21 is installed according to the above size ratio, ensuring the support strength of the battery cell 21 while maximizing the power output of the battery cell 21 and simultaneously facilitating the installation of the battery cell 21.

[0175] As shown in Figures 4, 8, 10, 11, 15, and 16, in some embodiments of this application, along the third direction, the maximum size of the battery cell 21 is D, where the L / D range value is 1 to 30, and the first, second, and third directions intersect in pairs.

[0176] If the L / D size ratio is greater than 30, the size of the battery cell 21 along the first direction becomes too large, making it difficult to install and simultaneously reducing the support strength of the battery cell 21. If the L / D size ratio is less than 1, the size of the battery cell 21 along the first direction becomes too small, reducing the power output of the battery cell 21.

[0177] It should be noted that the L / D value may be 1, 2, 3, 4, 5, 6, 7, 8...10...15...20...25...28...30. By setting L / D to different values, the battery cell 21 can be given different shapes, and the demand for batteries 10 of different types can be met.

[0178] Here, when the battery cell 21 is shown in Figure 4 or Figure 16, L / D has a maximum size ratio of 30, and when the battery cell 21 is shown in Figure 11, L / D has a minimum size ratio of 1. The battery cell 21 is installed according to the above size ratio, ensuring the support strength of the battery cell 21 while maximizing the power output of the battery cell 21.

[0179] Figure 23 is a schematic diagram of the internal structure of the second part 32 according to one embodiment of the present application, and Figure 24 is a schematic diagram of the enlarged structure of part D according to one embodiment of the present application. As shown in Figures 4, 8, 21, 22, 23 and 24, in some embodiments of the present application, the battery 10 further includes a baffle 321 positioned opposite a second surface 2121 on which the electrode terminals 214 of the battery cell 21 are provided, along a second direction, the distance between the electrode terminals 214 and the baffle 321 being 1.2 mm to 25 mm, and the second direction intersects both the first direction and the horizontal plane.

[0180] Specifically, the baffle 321 may be part of the housing 30 itself, or the baffle 321 may be connected to the housing 30 and provided within the housing 30. The second direction may be the vertical direction.

[0181] As shown in Figures 10, 11, 21, 22, 23, and 24, in some embodiments of the present application, the battery 10 further includes a baffle 321 positioned opposite a second surface 2121 on which the electrode terminals 214 of the battery cell 21 are provided, along a second direction, the distance between the electrode terminals 214 and the baffle 321 being 1.2 mm to 25 mm, and the second direction intersects both the first direction and the horizontal plane.

[0182] If the distance between the electrode terminal 214 and the baffle 321 is less than 1.2 mm, the electrode terminal 214 is more likely to impact the baffle, causing damage to the electrode terminal 214. If the distance between the electrode terminal 214 and the baffle 321 is greater than 25 mm, the size of the battery 10 becomes too large, making it difficult to install and set up.

[0183] By positioning the baffle 321 and electrode terminals 214 at intervals of 1.2 mm to 25 mm, if the battery 10 experiences an impact along the second direction, the baffle 321 and electrode terminals 214 will not be subjected to the impact, thereby preventing damage to the electrode terminals 214.

[0184] It should be noted that the spacing between the baffle 321 and the electrode terminal 214 may be 1.2, 1.5, 1.8, 2, 3, 4, 5, 6, 7, 8...10...15...20...23, 24, 25 mm.

[0185] As shown in Figures 1, 4, 8, 21, 22, 23, and 24, in some embodiments of this application, at least one electrode terminal 214 is located below the battery cell 21 and the baffle 321 is located below the electrode terminal 214, or at least one electrode terminal 214 is located above the battery cell 21 and the baffle 321 is located above the electrode terminal 214.

[0186] Specifically, the electrode terminals 214 and baffle 321 are both installed along the second direction, and the baffle 321 is located below the battery cell 21, that is, the baffle 321 is installed closer to the second portion 32 than the electrode terminals 214. Here, the second direction may be vertical, and the two electrode terminals 214 may both be located below the battery cell 21, or one of them may be located below the battery cell 21 and the other above the battery cell 21. Alternatively, the electrode terminals 214 and baffle 321 are both installed along the second direction, and the baffle 321 is located above the battery cell 21, that is, the baffle 321 is installed closer to the first portion 31 than the electrode terminals 214, and here, the two electrode terminals 214 may both be located above the battery cell 21, or one of them may be located below the battery cell 21 and the other above the battery cell 21.

[0187] As shown in Figures 1, 10, 11, 21, 22, 23, and 24, in some embodiments of this application, the battery cell 21 includes a protruding electrode terminal 214, the protruding electrode terminal 214 is located below the battery cell 21 and the baffle 321 is located below the electrode terminal 214, or the protruding electrode terminal 214 is located above the battery cell 21 and the baffle 321 is located above the electrode terminal 214.

[0188] The baffle 321 can be positioned either below the electrode terminal 214 along the third direction, or above the electrode terminal 214 along the third direction, allowing for a rational arrangement depending on the actual mounting position.

[0189] As shown in Figures 4, 7, 8, 21 and 22, in some embodiments of the present application, the electrode terminals 214 are provided on one second surface 2121, the battery 10 further includes a support plate 311, and the battery cell 21 is fixedly connected to the support plate 311 via another second surface 2121 on which the electrode terminals 214 are not provided, and the second direction intersects both the first direction and the horizontal plane.

[0190] Specifically, the support plate 311 may be part of the housing 30 itself, or it may be connected to the housing 30 and installed inside the housing 30. Here, the support plate 311 may be installed in the first part 31 or the second part 32.

[0191] As shown in Figures 4, 8, 21, and 22, both electrode terminals 214 are provided on one of the second surfaces 2121 of the battery cell 21 along the second direction, and the other second surface 2121 without the electrode terminal 214 is fixedly connected to the support plate 311, thereby fixing the battery cell 21 inside the housing 30.

[0192] As shown in Figures 10, 11, 21, and 22, the electrode terminal 214 is provided protruding from one of the second surfaces 2121, and the other second surface 2121, which does not have the electrode terminal 214 protruding from it, is fixedly connected to the support plate 311.

[0193] By fixing the battery cell 21 inside the housing 30 via the support plate 311, it is made easier to install and secure the battery cell 21.

[0194] As shown in Figures 4, 8, 21, and 22, in some embodiments of this application, another second surface 2121 is fixedly connected to the support plate 311 via a first adhesive layer 61, and the heat conductive member 40 is heat conductively connected to the first surface 2111 via a second adhesive layer 62, wherein the thermal conductivity coefficient of the first adhesive layer 61 is less than or equal to that of the second adhesive layer 62.

[0195] Specifically, the surface on which the electrode terminals 214 are not installed is fixedly connected to the support plate 311 via the first adhesive layer 61.

[0196] As shown in Figures 10, 11, 21, and 22, in some embodiments of this application, a second surface 2121 without protruding electrode terminals 214 is fixedly connected to a support plate 311 via a first adhesive layer 61, and a heat conductive member 40 is heat conductively connected to the first surface 2111 via a second adhesive layer 62. Here, the first adhesive layer 61 and the second adhesive layer 62 may each be selected as a heat conductive polyurethane adhesive layer, to which different amounts of heat conductive particles are added to achieve different thermal conductivity coefficients.

[0197] The first adhesive layer 61 is used to connect the second surface 2121 and the support plate 311, and the second adhesive layer 62 is used to make a thermal conduction connection between the first surface 2111 and the heat conduction member 40. Therefore, the thermal conductivity coefficient of the first adhesive layer 61 is set to be less than or equal to that of the second adhesive layer 62, ensuring that the heat conduction member 40 dissipates heat more effectively from the battery cell 21.

[0198] As shown in Figures 21 and 22, in some embodiments of this application, the range of the ratio of the thermal conductivity of the first adhesive layer 61 to the thermal conductivity of the second adhesive layer 62 is 0.1 to 1.

[0199] Specifically, the above ratio ranges are all such that the heat conductive member 40 can effectively exchange heat with the battery cell 21.

[0200] It should be understood that if the ratio of the thermal conductivity coefficient of the first adhesive layer 61 to the thermal conductivity coefficient of the second adhesive layer 62 is less than 0.1, the thermal conductivity of the first adhesive layer 61 is relatively low, and the support plate 311 connected to the first adhesive layer 61 cannot transfer heat through one side of the first adhesive layer 61, thereby preventing heat exchange with the support plate 311. If the ratio of the thermal conductivity coefficient of the first adhesive layer 61 to the thermal conductivity coefficient of the second adhesive layer 62 is greater than 1, the thermal conductivity of the first adhesive layer 61 is stronger than that of the second adhesive layer 62, the ability of the battery cell 21 to dissipate heat through the heat conductive member 40 is weakened, and the heat dissipation effect of the battery cell 21 deteriorates.

[0201] It should be noted that the ratio of the thermal conductivity coefficient of the first adhesive layer 61 to the thermal conductivity coefficient of the second adhesive layer 62 may be 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9...1.

[0202] As shown in Figures 1 to 24, a second aspect of the present application provides a power-consuming device 1 including a battery 10 according to any one of the above, the battery 10 being used to provide electrical energy to power and move the power-consuming device 1.

[0203] Figure 25 is a schematic diagram of the distribution structure of the battery 10 in a power consuming device 1 according to one embodiment of the present application. As shown in Figures 1 to 25, in some embodiments of the present application, when the longitudinal direction of the battery 10 and the direction of travel of the power consuming device 1 are different, the first direction is the direction of travel of the power consuming device 1.

[0204] In some embodiments, the longitudinal direction of the battery 10 may be perpendicular to the direction of travel of the power consuming device 1. For example, one or more batteries 10 may be arranged in the direction of travel of the power consuming device 1, and if multiple batteries 10 are arranged, the longitudinal direction of at least one battery 10 is perpendicular to the direction of travel of the power consuming device 1. In such embodiments, the first direction is the direction of travel of the power consuming device 1, that is, in a battery 10 whose longitudinal direction is perpendicular to the direction of travel of the power consuming device 1, the battery assembly 20 and the heat conductive member 40 are arranged along the width direction of the battery 10 and coincide with the direction of travel of the power consuming device 1.

[0205] The power-consuming device 1 of this application may be a mobile phone, portable device, laptop computer, battery car, electric toy, power tool, electric vehicle, ship, and spacecraft, for example, a spacecraft may be an airplane, rocket, spacecraft, and spaceship.

[0206] If the first direction is set to the direction of travel of the power consuming device 1, and the electrode terminals 214 are provided on the second surface 2121, the two second surfaces 2121 are installed facing each other along the second direction, and the second direction intersects with the first direction, meaning the electrode terminals 214 are not provided at the end of the direction of travel of the power consuming device 1, so if an impact occurs along the direction of travel of the power consuming device 1, the electrode terminals 214 will not be affected by the impact, thereby avoiding damage to the electrode terminals 214 and ensuring normal power supply from the battery 10. If the electrode terminals 214 are provided on the first surface 2111, since the first surface 2111 is the surface with the largest area, the occupancy rate of the electrode terminals 214 on the first surface 2111 is small, so if an impact occurs on the power consuming device 1, the electrode terminals 214 are less likely to be affected by the impact, thereby avoiding damage to the electrode terminals 214 and ensuring normal power supply from the battery 10.

[0207] The above description is merely an outline of the proposed technology of this application. In order to better understand the technical means of this application, and to make the above and other objectives, features, and advantages of this application clearer and easier to understand, the following will describe specific embodiments of this application, which can be implemented according to the specifications.

[0208] As shown in Figures 1, 4, 5, 7, 8, and 19 to 24, in one embodiment of the present application, the power consuming device 1 includes a battery 10, which is used to provide electrical energy to drive the power consuming device 1. The battery 10 includes a housing 30 and a plurality of battery assemblies 20 provided within the housing 30, the housing 30 including a first portion 31 and a second portion 32, the first portion 31 and the second portion 32 enclosing a space for housing the battery assemblies 20. The plurality of battery assemblies 20 are each installed along a first direction and arranged along a third direction. The battery assembly 20 includes a plurality of battery cells 21, the longitudinal direction of the battery cells 21 is installed along the first direction, the height direction of the battery cells 21 is installed along the second direction, and the width direction of the battery cells 21 is installed along the third direction. The battery cell 21 includes two third surfaces 2112 positioned opposite each other along a first direction, two second surfaces 2121 positioned opposite each other along a second direction, and two first surfaces 2111 positioned opposite each other along a third direction, the first surfaces 2111 being the surfaces with the largest area of ​​the battery cell 21. Here, the first direction is the direction of travel of the power consuming device 1, the longitudinal direction of the battery 10 is parallel to the direction of travel of the power consuming device 1, the second direction is the vertical direction, and the third direction is the lateral direction of the direction of travel of the power consuming device 1.

[0209] The battery cell 21 includes an electrode assembly 213, which includes a main body 2131 and a tab 2132 protruding from the main body 2131, the tab 2132 being electrically connected to an electrode terminal 214, and along a third direction, the projections of the heat conduction member 40 and the main body 2131 have at least partially overlapping and overlapping regions. Along a second direction, the size of the main body 2131 is L1, the size of the heat conduction member 40 is L2, the size of the overlapping region is L3, 0.5 ≤ L2 / L1 ≤ 1.5, and 0.5 ≤ L3 / L1 ≤ 1.

[0210] The battery cell 21 includes two electrode terminals 214 with opposite polarity, and the two electrode terminals 214 are provided on a single second surface 2121. The battery cell 21 further includes a pressure relief mechanism 215, and the pressure relief mechanism 215 and the two electrode terminals 214 are provided on the same second surface 2121. Along the first direction, the maximum size of the battery cell 21 is L, and along the second direction, the maximum size of the battery cell 21 is H, with an L / H range value of 0.5 to 6. Along the third direction, the maximum size of the battery cell 21 is D, where the L / D range value is 1 to 30. The battery 10 further includes a baffle 321 provided on the second part 32. The baffle 321 is positioned opposite the second surface 2121 on which the electrode terminals 214 of the battery cell 21 are located, along the second direction, the electrode terminals 214 are located below the battery cell 21, and the baffle 321 is located below the electrode terminals 214, with a spacing of 1.2 mm to 25 mm between the electrode terminals 214 and the baffle 321.

[0211] A plurality of heat conduction members 40 are provided within the housing 30, and the heat conduction members 40 are installed along a first direction, and the plurality of heat conduction members 40 are arranged along a third direction. Heat conduction members 40 are provided on both sides of the battery assembly 20 along the third direction, and the first surfaces 2111 on both sides along the third direction are heat conduction connected to the heat conduction members 40. A heat exchange medium passage is provided within the heat conduction members 40. The battery 10 further includes a current collector member 50 that extends along the third direction and is in fluid communication with the plurality of heat conduction members 40. There are two current collector members 50, which are both provided at one end in the direction of travel of the power consuming device 1 and are spaced apart along a second direction.

[0212] A support plate 311 is further provided within the housing 30, and the support plate 311 is provided on the first portion 31. The battery cell 21 is fixedly connected to the support plate 311 via a second surface 2121 on which electrode terminals 214 are not installed. The second surface 2121 on which electrode terminals 214 are not installed is fixedly connected to the support plate 311 via a first adhesive layer 61. The heat conductive member 40 is thermally conductively connected to the first surface 2111 via a second adhesive layer 62. The ratio of the thermal conductivity coefficient of the first adhesive layer 61 to the thermal conductivity coefficient of the second adhesive layer 62 is in the range of 0.1 to 1.

[0213] Finally, it should be noted that the embodiments described above are merely for illustrative purposes and not limiting, and while the application has been described in detail with reference to the embodiments described above, those skilled in the art should understand that modifications can still be made to the inventions described in the embodiments, or that some or all of their technical features can be replaced with equivalent substitutions, and such modifications or substitutions should not cause the essence of the corresponding invention to deviate from the scope of the inventions in the embodiments of this application, and should all be included within the scope of the claims and specification of this application. In particular, unless there is a structural conflict, each technical feature referred to in each embodiment can be combined in any way. This application is not limited to any specific embodiment disclosed herein, but includes all inventions that fall within the scope of the claims. [Explanation of Symbols]

[0214] The reference numerals used in the drawings for specific embodiments are as follows: 1: Vehicle, 10: Battery, 11: Controller, 12: Motor, 20: Battery assembly, 21: Battery cell, 211: Case, 2111: First surface, 2112: Third surface, 212: End cover, 2121: Second surface, 213: Electrode assembly, 2131: Main body, 2132: Tab, 214: Electrode terminals, 215: Pressure release mechanism, 30: Housing, 31: First part, 311: Support plate, 32: Second part, 321: Baffle, 40: Heat conductive material, 50: Current collector, 61: First adhesive layer, 62: Second adhesive layer.

Claims

1. A battery including a battery assembly (20), The battery assembly (20) includes at least one battery cell (21), The battery cell (21) includes a plurality of surfaces, the plurality of surfaces including a first surface (2111) having the largest area, the plurality of surfaces further include two second surfaces (2121) that are positioned opposite each other, the two second surfaces are each connected to the first surface, and the battery cell (21) further includes electrode terminals, the electrode terminals are provided on the first surface or at least one of the second surfaces (2121). The battery assembly (20) is installed such that the first surface (2111) intersects the horizontal plane and is parallel to the first direction, the first direction being the direction of travel of the power consumption device (1) having the battery (10). The battery (10) includes a plurality of heat conductive members (40), the plurality of heat conductive members (40) are arranged in a third direction, the third direction intersects both the first direction and the first surface (2111), each heat conductive member (40) extends along the first direction, and each battery cell (21) of the battery assembly (20) is thermally conductively connected to the heat conductive member (40) at least via the first surface (2111). The battery (10) further includes a confluence member (50), the confluence member (50) is in fluid communication with a plurality of heat conduction members (40), and the confluence member (50) is provided only at one end of the heat conduction members (40) located in the first direction. A battery characterized by the following features.

2. The battery according to claim 1, characterized in that the two second surfaces (2121) are positioned perpendicular to the second direction and opposite to each other in the second direction, and the second direction intersects with the first direction.

3. The battery according to claim 2, characterized in that the second direction intersects the horizontal plane.

4. The battery according to claim 3, comprising at least two battery assemblies (20), wherein both sides of the heat conduction member (40) in a third direction are thermally conductively connected to the two battery assemblies (20), respectively.

5. The battery according to claim 3, characterized in that the longitudinal direction of the battery (10) is parallel to the direction of travel of the power consuming device (1).

6. The battery according to claim 3, characterized in that a heat exchange medium passage is provided within the heat conductive member (40).

7. The battery according to claim 6, wherein the heat conductive members (40) are provided on both sides of the battery assembly (20) in the third direction, and the battery assembly (20) is connected to the heat conductive members (40) on both sides by heat conduction.

8. The battery according to claim 6, wherein the battery cell (21) includes two first surfaces (2111) that face each other in the third direction, and each of the two first surfaces (2111) of the battery cell (21) is thermally conductively connected to one of the thermal conductive members (40).

9. The battery according to claim 3, wherein the battery cell (21) includes an electrode assembly (213), the electrode assembly (213) includes a body portion (2131) and a tab (2132) protruding from the body portion (2131), the tab (2132) being electrically connected to the electrode terminal (214), and the projections of the heat conductive member (40) and the body portion (2131) along a third direction have at least partially overlapping and overlapping regions.

10. The battery according to claim 9, characterized in that, along the second direction, the size of the main body (2131) is L1, the size of the heat conductive member (40) is L2, where 0.5 ≤ L2 / L1 ≤ 1.5, and the first direction, the second direction and the third direction intersect each other.

11. The battery according to claim 10, characterized in that, along the second direction, the size of the overlapping region is L3 and 0.5 ≤ L3 / L1 ≤ 1.

12. The battery according to any one of claims 4 to 11, characterized in that there are two merging members (50), the two merging members (50) are provided only at one end of the heat conduction member (40) located in the first direction, the two merging members (50) are arranged along a second direction, the second direction intersects both the first direction and the horizontal plane.

13. The battery according to any one of claims 1 to 5, characterized in that the electrode terminal (214) includes two electrode terminals (214) having opposite polarities, and the two electrode terminals (214) are provided on one of the second surfaces (2121), or the two electrode terminals (214) are each provided on two of the second surfaces (2121).

14. The battery according to claim 13, wherein the battery cell (21) further includes a pressure release mechanism (215), and the pressure release mechanism (215) and at least one of the electrode terminals (214) are provided on the same second surface (2121), or the pressure release mechanism (215) and the electrode terminals (214) are provided on two of the second surfaces (2121).

15. The battery according to any one of claims 1 to 5, characterized in that the electrode terminal (214) is provided on the first surface (2111).

16. The battery according to claim 15, wherein the battery cell (21) includes a first surface (2111) and a fourth surface positioned opposite to the first surface, the first surface (2111) and the fourth surface are positioned opposite to each other along the third direction, a recess is provided on the edge of the fourth surface, the first surface (2111) is used to install the electrode terminal (214), the electrode terminal (214) protrudes from the first surface (2111) in the third direction and corresponds to the recess.

17. The battery cell (21) includes an electrode assembly (213), the electrode assembly (213) having a wound structure and being flattened, the outer surface of the electrode assembly (213) includes two flattened surfaces, the two flattened surfaces facing each other along a third direction, Alternatively, the electrode assembly (213) has a laminated structure, and the first electrode plate, separator and second electrode plate of the electrode assembly (213) are laminated along a third direction. The battery according to any one of claims 1 to 5.

18. The battery according to any one of claims 1 to 5, wherein the battery assembly (20) includes at least two battery cells (21), and the at least two battery cells (21) are arranged side by side in the first direction.

19. The battery according to any one of claims 1 to 5, characterized in that, along the first direction, the maximum size of the battery cell (21) is L, along the second direction, the maximum size of the battery cell (21) is H, the L / H range value is 0.5 to 6, and the second direction intersects both the first direction and the horizontal plane.

20. The battery according to claim 19, characterized in that, along the third direction, the maximum size of the battery cell (21) is D, where the L / D range value is 1 to 30, and the first direction, the second direction and the third direction intersect in pairs.

21. The battery according to claim 3, characterized in that the electrode terminal (214) is provided on one of the second surfaces (2121), the battery (10) further includes a support plate (311), the battery cell (21) is fixedly connected to the support plate (311) via another second surface (2121) on which the electrode terminal (214) is not provided, and the second direction intersects both the first direction and the horizontal plane.

22. The battery according to claim 21, characterized in that the other second surface (2121) is fixedly connected to the support plate (311) via the first adhesive layer (61), the heat conductive member (40) is heat conductively connected to the first surface (2111) via the second adhesive layer (62), and the thermal conductivity coefficient of the first adhesive layer (61) is less than or equal to that of the second adhesive layer (62).

23. The battery according to claim 22, characterized in that the range of the ratio between the thermal conductivity coefficient of the first adhesive layer (61) and the thermal conductivity coefficient of the second adhesive layer (62) is 0.1 to 1.

24. A power-consuming device comprising a battery (10) according to any one of claims 1 to 11, wherein the battery (10) is used to provide electrical energy to drive and propel the power-consuming device (1).

25. The power consuming device according to claim 24, characterized in that when the longitudinal direction of the battery (10) and the direction of travel of the power consuming device (1) are different, the first direction is the direction of travel of the power consuming device (1).

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