Batteries and power-consuming devices

Abstract

The battery (10) and the power consuming device (1) are: the battery (10) includes a thermally conductive member (40) and a battery assembly (20), the thermally conductive member (40) is arranged along a first direction, the first direction being the longitudinal direction of the battery (10) or the running direction of the power consuming device (1) having the battery (10), the battery assembly (20) includes at least one battery cell (21), the battery assembly (20) is arranged along the first direction, the battery cell (21) includes a plurality of surfaces, the plurality of surfaces including a first surface (2111) having a maximum area, and the battery cell (21) is thermally conductively connected to the thermally conductive member (40) via at least the first surface (2111).

Description

[Technical Field]

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

[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. At present, new energy vehicles have already had a major impact on traditional fuel-fired vehicles. As a core component of new energy vehicles, batteries play a vital role in the development process of new energy vehicles.

[0003] Since a certain amount of heat is generated during battery operation, to prevent excessive temperature rise in the battery, a thermal conductive member is generally provided in the battery to exchange heat with the battery core in the battery. Here, the thermal conductive member is generally installed extending along the width direction of the vehicle, so that both ends of the thermal conductive member are located on both sides of the width direction of the vehicle. When the vehicle is hit along the side, the thermal conductive member is likely to be damaged, which affects the safety of the battery. Summary of the Invention

[0004] In view of the shortcomings existing in the prior art, the object of the present application is to provide a battery and a power consuming device that can effectively solve the safety problem when a vehicle is impacted along the lateral direction.

[0005] A first aspect of the present application discloses a battery, the battery comprising: a heat conduction member disposed along a first direction that is a longitudinal direction of the battery or a travel direction of a power consumption device having the battery; a battery assembly including at least one battery cell and disposed along a first direction; The battery cell includes a plurality of surfaces, the plurality of surfaces including a first surface having a largest area, and the battery cell is thermally connected to the thermally conductive member via at least the first surface.

[0006] In the battery of the present application, the thermal conduction member is installed along a first direction, and the first direction is the longitudinal direction of the battery or the running direction of the power consuming device having the battery, i.e., both ends of the thermal conduction member are respectively provided at both ends of the longitudinal direction of the battery or both ends of the running direction of the power consuming device, so that when the power consuming device collides along the lateral direction, the impact force does not act directly on the ends of the thermal conduction member, thereby preventing damage to the thermal conduction member and ensuring the safety and reliability of the use of the battery, and the battery cells are thermally connected to the thermal conduction member through the first surface, thereby improving the heat exchange effect of the thermal conduction member with the battery cells.

[0007] In some embodiments of the present application, the first surface intersects with a horizontal plane, which is the surface that maximizes the area of ​​the battery cells, and intersecting the first surface with the horizontal plane can maximize the number of battery cells arranged within the horizontal plane, thereby increasing the overall energy density of the battery.

[0008] In some embodiments of the present application, the battery includes at least two battery assemblies, and both sides of the thermally conductive member are thermally conductively connected to the two battery assemblies along the second direction, and both the second direction and the first direction intersect with the first surface. By thermally conductively connecting both sides of the thermally conductive member to the first surfaces of the battery cells, respectively, the heat exchange effect of the thermally conductive member with the battery cells is improved.

[0009] In some embodiments of the present application, the battery includes at least two battery assemblies arranged along the second direction and at least one thermally conductive member, where one first surface of each battery cell of each battery assembly is thermally conductively connected to one thermally conductive member, and both the second direction and the first direction intersect with the first surface. By thermally conductively connecting one first surface of the battery cell to the thermally conductive member, the battery cells can be effectively heat-exchanged, and the number of thermally conductive members installed can be reduced, thereby reducing the weight and cost of the battery.

[0010] In some embodiments of the present application, the longitudinal direction of the battery is parallel to or transverse to the direction of travel of the power consuming device, and the battery in the present application may be mounted in the device along either direction to facilitate installation of the battery.

[0011] In some embodiments of the present application, a heat exchange medium passage is provided in the heat conduction member, and the heat exchange medium passage is used for the flow of a heat exchange medium, thereby carrying away heat released from the battery cells or heating the feeder battery cells, and further improving the heat exchange efficiency of the battery cells.

[0012] In some embodiments of the present application, the battery includes a plurality of thermally conductive members, the plurality of thermally conductive members being aligned along a second direction, and the second direction and the first direction both intersect with the first surface. By aligning the plurality of thermally conductive members along the second direction and jointly using them to exchange heat with the battery, the heat exchange rate for the battery is effectively increased.

[0013] In some embodiments of the present application, a heat conducting member is provided on each side of the battery assembly along the second direction, and the battery assembly is thermally conductively connected to the heat conducting members on both sides. Both sides of the battery assembly are thermally conductively connected to the heat conducting members simultaneously, and by simultaneously exchanging heat with both sides of the battery assembly, the heat exchange rate for the battery is effectively improved.

[0014] In some embodiments of the present application, the battery cell includes two opposing first surfaces along the second direction, and the two first surfaces of the battery cell are thermally conductively connected to one thermal conductive member, respectively. When the battery cell has two first surfaces with the largest areas, simultaneous heat exchange between the two first surfaces can effectively improve the heat exchange rate for the battery.

[0015] In some embodiments of the present application, the battery cell includes an electrode assembly, the electrode assembly including a body and a tab protruding from the body, the tab being electrically connected to an electrode terminal, projections of the thermally conductive member and the body along a second direction at least partially overlap and have an overlapping area, and both the second direction and the first direction intersect with the first surface. By arranging the thermally conductive member and the body so as to at least partially overlap along the second direction, heat can be effectively exchanged with the body through the thermally conductive member, thereby improving the heat exchange effect for the battery cell.

[0016] In some embodiments of the present application, the size of the main body along the third direction is L1, and the size of the heat conduction member is L2, where 0.5≦L2 / L1≦1.5, and the first direction, the second direction, and the third direction intersect two by two. The L2 / L1 ratio is set in a range greater than 0.5 and less than 1.5 to ensure that the heat conduction member has a sufficient heat conduction area to exchange heat with the main body, thereby significantly enhancing the heat exchange effect of the heat conduction member on the main body.

[0017] In some embodiments of the present application, the size of the overlapping region along the third direction is L3, where 0.5≦L3 / L1≦1. By setting the size of the overlapping region in the third direction, the heat exchange area between the heat conducting member and the main body can be reasonably set, and the heat exchange effect of the heat conducting member with the main body can be significantly enhanced.

[0018] In some embodiments of the present application, the battery further includes a current collecting member, the current collecting member in fluid communication with the heat exchange medium passages within the plurality of thermally conductive members; Here, a current collecting member is provided at one end of the heat conducting member located in the first direction, or current collecting members are provided at both ends of the heat conducting member located in the first direction, respectively. The current collecting member is used to supply or recover the heat exchange medium in the heat exchange medium passage, thereby exchanging heat with the battery. By providing the current collecting member at the end of the heat conducting member in the first direction, when the power consuming device collides in the lateral direction, the impact force does not act directly on the end of the heat conducting member, thereby preventing damage to the heat conducting member and ensuring the safety and reliability of the battery.

[0019] In some embodiments of the present application, there are two current collecting members, and the two current collecting members are provided at one end of the heat conducting member located in a first direction, and the two current collecting members are arranged along a third direction, with the first direction, the second direction, and the third direction intersecting each other two by two. By providing both current collecting members at one end in the first direction and arranging them along the third direction, the space occupied by the current collecting members in the first direction within the battery can be effectively reduced, thereby making it easier to install other structures within the battery and improving the energy density of the battery. By providing both current collecting members at one end in the first direction, the probability of the current collecting members being damaged when facing a collision in the first direction can be further reduced.

[0020] In some embodiments of the present application, the battery cell includes two second surfaces, the two second surfaces are arranged opposite to each other along the second direction or the third direction, the first direction, the second direction, and the third direction intersect two by two, the battery cell includes electrode terminals, the electrode terminals are provided on the second surfaces, and the surface area of ​​the second surfaces is smaller than the surface area of ​​the first surfaces. The electrode terminals are provided on the second surfaces, and power is supplied to a power consuming device via the electrode terminals on the second surfaces.

[0021] In some embodiments of the present application, the electrode terminal includes two electrode terminals of opposite polarity, and the two electrode terminals are provided on one second surface, or the two electrode terminals are provided on two second surfaces, respectively. The two electrode terminals of opposite polarity may be provided on the same second surface of the battery cell as needed, or may be provided on two second surfaces, respectively, and the electrode terminals escape the first surface that exchanges heat with the thermal conductive member, and are then easily electrically connected to another adjacent battery cell.

[0022] In some embodiments of the present application, the battery cell includes an electrode terminal, and the electrode terminal is provided on the first surface. The electrode terminal is provided on the first surface, and power is supplied to a power consuming device via the electrode terminal on the first surface. By providing the electrode terminal on the first surface, it is possible to save space occupied by the electrode terminal in the first direction or the third direction of the battery, and further increase the energy density of the battery.

[0023] In some embodiments of the present application, the battery cell includes a first surface and a fourth surface opposite to the first surface, the first surface and the fourth surface facing each other along a second direction, both of which intersect with the first surface, and a recess formed on an edge of the fourth surface, the first surface being used for installing an electrode terminal, the electrode terminal being installed to protrude from the first surface in the second direction and corresponding to the recess. By installing the electrode terminal on the first surface and providing a recess corresponding to the electrode terminal on the edge of the fourth surface, the recess can accommodate the electrode terminal of an adjacent battery cell and leave operating space for electrical connection, making the overall structure of the battery more compact and increasing space utilization.

[0024] In some embodiments of the present application, the battery cell further includes a pressure relief mechanism, and the battery cell has at least one electrode terminal. The pressure relief mechanism and the at least one electrode terminal are provided on the same second surface, or the pressure relief mechanism and the electrode terminal are provided on two second surfaces, respectively. The pressure relief mechanism communicates with the interior of the battery cell and is used to release pressure inside the battery cell when the internal pressure of the battery cell increases. The pressure relief mechanism may be provided on the same second surface as the electrode terminal, or on two second surfaces, as needed, so that the pressure relief mechanism relieves the first surface that exchanges heat with the thermal conductive member, facilitating smooth exhaust when thermal runaway occurs in the battery cell.

[0025] In some embodiments of the present application, the battery cell further includes a pressure relief mechanism and two opposing third surfaces, and the pressure relief mechanism is provided on at least one of the third surfaces. By providing the pressure relief mechanism on the third surface and the electrode terminals on the second surface, the pressure relief mechanism and the electrode terminals are separated, which makes it easier to reduce the risk that exhaust from the pressure relief mechanism will affect the electrode terminals in the event of thermal runaway in the battery cell.

[0026] In some embodiments of the present application, the battery cell further includes a pressure relief mechanism, and the pressure relief mechanism is provided on the first surface. By providing the pressure relief mechanism on the first surface, it is easy to attach the battery cell.

[0027] In some embodiments of the present application, the battery cell includes an electrode assembly, the electrode assembly having a wound structure and a flat shape, an outer surface of the electrode assembly including two flat surfaces, the two flat surfaces facing each other along a second direction, or the electrode assembly having a stacked structure, a first electrode plate, a separator, and a second electrode plate of the electrode assembly being stacked along the second direction; The second direction and the first direction both intersect the first surface. By arranging the electrode assembly in a stacked or wound configuration, power can be effectively supplied to a power consuming device through the electrode assembly.

[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 the at least two battery cells are arranged along the first direction and heat exchange between the battery cells is required, a heat conduction member can be installed along the first direction, thereby facilitating heat exchange between the at least two battery cells in the battery assembly, and thereby improving the heat exchange rate of the heat conduction member.

[0029] In some embodiments of the present application, the maximum size of the battery cells along the first direction is L, and the maximum size of the battery cells along the second direction is D, where the L / D ratio ranges from 1 to 30. By installing the battery cells according to the above size ratio, it is possible to maximize the amount of power of the battery cells while ensuring the supporting strength of the battery cells.

[0030] In some embodiments of the present application, the maximum size of the battery cells along the third direction is H, the L / H ratio ranges from 0.5 to 6, and the first direction, the second direction, and the third direction intersect two by two. By installing the battery cells according to the above size ratio, it is possible to maximize the power capacity of the battery cells while ensuring the supporting strength of the battery cells.

[0031] In some embodiments of the present application, the electrode terminals are provided on one second surface, the battery includes a support plate, the battery cells are fixedly connected to the support plate via another second surface on which the electrode terminals are not provided, and both the second surface and the first direction intersect with the horizontal plane. By fixing the battery cells within the housing via the support plate, it is easy to attach and fix the battery cells.

[0032] In some embodiments of the present application, the second surface is fixedly connected to the support plate via a first adhesive layer, and the thermally conductive member is thermally connected to the first surface via a second adhesive layer, and the thermal conductivity of the first adhesive layer is equal to or less than the thermal conductivity 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 thermally conductively connect the first surface to the thermally conductive member, the thermal conductivity of the first adhesive layer is set to be equal to or less than the thermal conductivity of the second adhesive layer to ensure more effective heat exchange between the battery cells via the thermally conductive member.

[0033] In some embodiments of the present application, the ratio of the thermal conductivity coefficient of the first adhesive layer to the thermal conductivity coefficient of the second adhesive layer is in the range of 0.1 to 1. When installed according to this ratio, both can effectively exchange heat with the battery cells via the thermal conductive member.

[0034] A second aspect of the present application further provides a power consumption device, comprising the battery according to any one of the above claims, wherein the battery is used to provide electrical energy to drive the power consumption device to run.

[0035] In some embodiments of the present application, when the longitudinal direction of the battery is different from the running direction of the power consuming device, the first direction is the running direction of the power consuming device. When the first direction is set as the running direction of the power consuming device and heat exchange is required between the battery cells, the thermal conductive member can be installed along the first direction, thereby facilitating heat exchange between the battery cells in the battery assembly. The thermal conductive member is installed along the first direction, which is the running direction of the power consuming device having the battery. That is, both ends of the thermal conductive member are respectively located at both ends of the running direction of the power consuming device. Therefore, when the power consuming device collides sideways, the impact force does not directly act on the ends of the thermal conductive member, thereby preventing damage to the thermal conductive member and ensuring the safety and reliability of the battery.

[0036] The above description is merely a summary of the technical solution of the present application, which can be implemented in accordance with the content of the specification, so as to make the technical means of the present application more clearly understood, and to make the above and other objectives, features and advantages of the present application more clearly understandable, the following particularly cites specific embodiments of the present application for description. [Brief explanation of the drawings]

[0037] [Figure 1] 1 is a structural schematic diagram of a vehicle according to an embodiment of the present application; [Figure 2] 1 is an exploded structural schematic diagram of a battery according to an embodiment of the present application; [Figure 3] 1 is a structural schematic diagram of a battery assembly according to an embodiment of the present application; [Figure 4] 1 is a structural schematic diagram of a battery cell according to an embodiment of the present application; [Figure 5] 1 is an exploded structural schematic diagram of a battery cell according to an embodiment of the present application; [Figure 6] 1 is a structural schematic diagram of a battery cell according to an embodiment of the present application; [Figure 7] 1 is a structural schematic diagram of a battery cell according to an embodiment of the present application; [Figure 8] 1 is a structural schematic diagram of a battery cell according to an embodiment of the present application; [Figure 9] 1 is a structural schematic diagram of a battery according to an embodiment of the present application; [Figure 10] 1 is an exploded structural schematic diagram of a battery according to an embodiment of the present application; [Figure 11] 1 is a structural schematic diagram of a battery assembly according to an embodiment of the present application; [Figure 12] 1 is a structural schematic diagram of a battery assembly according to an embodiment of the present application; [Figure 13] 1 is a structural schematic diagram of a battery assembly according to an embodiment of the present application; [Figure 14] 1 is a structural schematic diagram of a battery cell according to an embodiment of the present application; [Figure 15] 1 is a structural schematic diagram of a battery assembly according to an embodiment of the present application; [Figure 16] 1 is a structural schematic diagram of a battery cell according to an embodiment of the present application; [Figure 17] 1 is a structural schematic diagram of a battery cell according to an embodiment of the present application; [Figure 18] 1 is a structural schematic diagram of a battery assembly according to an embodiment of the present application; [Figure 19] 1 is a structural schematic diagram of a battery assembly according to an embodiment of the present application; [Figure 20] 1 is a structural schematic diagram of a battery cell according to an embodiment of the present application; [Figure 21] 1 is a structural schematic diagram of a heat conduction member according to an embodiment of the present application; [Figure 22] FIG. 2 is a structural schematic diagram of a second portion according to an embodiment of the present application. [Figure 23] FIG. 2 is an assembly structure schematic diagram of a second section and a battery assembly according to an embodiment of the present application. [Figure 24] FIG. 2 is an enlarged structural schematic diagram of part A according to an embodiment of the present application. [Figure 25] 1 is a structural schematic diagram of cross section BB according to an embodiment of the present application; FIG. [Figure 26] FIG. 2 is an enlarged structural schematic diagram of part C according to an embodiment of the present application. [Figure 27] FIG. 2 is a schematic diagram of the internal structure of the second portion according to an embodiment of the present application. [Figure 28] FIG. 2 is an enlarged structural schematic diagram of part D according to an embodiment of the present application. [Figure 29] 1 is a schematic diagram of a battery distribution structure in a power consumption device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0038] The following describes in detail the embodiments of the technical solution of the present application in conjunction with the drawings. The following embodiments are merely examples, intended to more clearly explain the technical solution of the present application, and do not limit the scope of protection of the present application.

[0039] It should be noted that unless otherwise specified, technical or scientific terms used in the embodiments of the present application should have the common meaning as understood by a person skilled in the art to which the embodiments of the present application belong.

[0040] In describing the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center," "longitudinal direction," "lateral direction," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial direction," "radial direction," and "circumferential direction" are orientations or positional relationships shown based on the drawings, and are intended merely to describe and simplify the embodiments of the present application. They do not indicate or imply that the referred devices or elements must have a specific orientation or be configured and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0041] It should be noted that the technical terms "first," "second," etc. are used for descriptive purposes only and cannot be understood to indicate or imply relative importance or the number of technical features indicated. In the description of the embodiments of this application, "plurality" means two or more unless otherwise clearly specified.

[0042] In the description of the embodiments of the present application, unless otherwise clearly defined or limited, the technical terms "attached," "connected," "connected," "fixed," etc. should be understood in a broad sense, and may refer to, for example, a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, an internal communication between two elements, or an interactive relationship between two elements. Those skilled in the art will be able to understand the specific meanings of the above terms in the embodiments of the present application according to the specific circumstances.

[0043] Unless otherwise clearly defined or limited in the description of the embodiments of this application, a first feature being "above" or "below" a second feature may mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature via an intermediate medium. Furthermore, a first feature being "above," "above," or "on the upper surface" of a second feature may mean that the first feature is directly above or diagonally above the second feature, or may simply indicate that the horizontal height of the first feature is higher than that of the second feature. A first feature being "below," "below," or "on the lower surface" of a second feature may mean that the first feature is directly below or diagonally below the second feature, or may simply indicate that the horizontal height of the first feature is lower than that of the second feature.

[0044] Currently, in view of the development of the market situation, the application of power batteries is becoming more and more widespread. Power batteries are widely used in energy storage power systems such as hydroelectric power, thermal power, wind power and solar power plants, as well as in electric transportation tools such as electric bicycles, electric motorcycles and electric cars, and in multiple fields such as military equipment and aerospace. Lithium-ion batteries have been widely used in mobile and portable devices due to their advantages such as high energy density, high average open circuit voltage and long cycle life.

[0045] The inventors of the present application found that the thermal conduction member inside the power battery of a vehicle is generally installed extending along the width direction of the vehicle, so that both ends of the thermal conduction member are respectively on both sides of the width direction of the vehicle, and when the vehicle is hit along the side, i.e., when the vehicle is hit along the direction in which it is installed at an angle to the running direction, both ends of the thermal conduction member are easily damaged under the action of the impact force, which will cause damage to the thermal conduction member, affect the normal use of the battery, and even pose a safety hazard.

[0046] To solve the problem of damage to the thermal conductive member when a vehicle is hit in a sideways direction, the inventors of the present application have conducted research and discovered that by installing the battery assembly along the length of the battery or along the running direction of the power consuming device containing the battery, the thermal conductive member is installed along the length of the battery or along the running direction of the power consuming device containing the battery, i.e., both ends of the thermal conductive member are located at both ends of the length of the battery or both ends of the running direction of the power consuming device, respectively, so that when the power consuming device is hit in a sideways direction, the impact force will not directly act on the ends of the thermal conductive member, thereby preventing damage to the thermal conductive member and ensuring the safety and reliability of the battery.

[0047] Based on the above idea, the inventor of the present application has conducted in-depth research and designed a battery, the 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 running direction of a power consumption device having the battery, the battery cell including a plurality of surfaces, the plurality of surfaces including a first surface having a largest area, the plurality of surfaces further including two second surfaces installed opposite 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.

[0048] In the battery according to the present application, the battery assembly is installed along a first direction, i.e., the battery cells in the battery assembly are installed along a first direction. When heat exchange between the battery cells is required, the thermal conduction member can be installed along the first direction, thereby facilitating heat exchange between the battery cells in the battery assembly. The thermal conduction member is installed along the first direction, and the first direction is the longitudinal direction of the battery or the running direction of the power consuming device having the battery. That is, the two ends of the thermal conduction member are respectively located at the two ends of the longitudinal direction of the battery or the two ends of the running direction of the power consuming device. Therefore, when the power consuming device collides sideways, the impact force does not act directly on the ends of the thermal conduction member, thereby preventing damage to the thermal conduction member and ensuring the safety and reliability of the battery when used.

[0049] The present application provides a battery and a power consumption device having the battery, and the battery can be applied to various power consumption devices that use batteries, such as mobile phones, portable devices, laptops, battery-powered vehicles, electric toys, electric tools, electric vehicles, ships and spacecraft, etc., for example, spacecraft include airplanes, rockets, space shuttles and spaceships, and the battery is used to provide electrical energy to the power consumption devices.

[0050] It should be understood that the technical solutions described in the embodiments of the present application are not limited to being applied to the batteries and power-consuming devices described above, but can be applied to all batteries and power-consuming devices that use batteries, including housings. However, for the sake of brevity, the following embodiments will be described using an electric vehicle as an example.

[0051] FIG. 1 is a structural schematic diagram of a vehicle 1 according to some embodiments of the present application. FIG. 2 is an exploded structural schematic diagram of a battery 10 according to one embodiment of the present application. FIG. 3 is a structural schematic diagram of a battery assembly 20 according to one embodiment of the present application. As shown in FIGS. 1 to 3 , the vehicle 1 may be a fuel oil vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, a range-extender vehicle, etc. A battery 10 is installed inside the vehicle 1, and may be installed at the bottom, head, or tail of the vehicle 1. The battery 10 may be used to power the vehicle 1, for example, the battery 10 may be used as an operating power source for the vehicle 1. The vehicle 1 may further include a controller 11 and a motor 12, and the controller 11 is used to control the battery 10 to power the motor 12, for example, for starting the vehicle 1, navigation, and operating power consumption needs during driving.

[0052] In some embodiments of the present application, the battery 10 not only serves as the operating power source for the vehicle 1, but can also provide driving power to the vehicle 1 as a driving power source for the vehicle 1, replacing or partially replacing fuel oil or natural gas.

[0053] To meet different power needs, the battery 10 may include multiple battery cells 21, which are the smallest unit constituting a battery assembly 20 or a battery pack. The multiple battery cells 21 are connected in series and / or parallel at their electrode terminals for various applications. The battery 10 referred to in this application is a battery pack. The multiple battery cells 21 may be connected in series, parallel, or series-parallel, with a series-parallel connection being a combination of series and parallel connections. In the embodiment of this application, the multiple battery cells 21 may directly constitute a battery pack, or may be first formed into a battery assembly 20, which then constitutes a battery pack.

[0054] As shown in FIGS. 2 and 3 , the battery 10 may include multiple battery assemblies 20 and a housing 30, with the multiple battery assemblies 20 housed within the housing 30. The housing 30 is used to house the battery cells 21 or the battery assemblies 20 to prevent liquids or other foreign objects from affecting the charging or discharging of the battery cells 21. The housing 30 may have a simple three-dimensional structure, such as a single rectangular parallelepiped, cylinder, or sphere, or a complex three-dimensional structure formed by combining simple three-dimensional structures, such as rectangular parallelepipeds, cylinders, or spheres. The embodiment of the present application is not limited thereto. 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 plastic, or a composite material, such as glass fiber and epoxy resin. The embodiment of the present application is not limited thereto.

[0055] 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 being fitted over each other, and the first portion 31 and the second portion 32 jointly defining a space for accommodating the battery cells 21. The second portion 32 may be a hollow structure with one end open, the first portion 31 may be a plate-like structure with the first portion 31 fitted over the open side of the second portion 32 so that the first portion 31 and the second portion 32 jointly define a space for accommodating the battery cells 21, or 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 fitted over the open side of the second portion 32.

[0056] The battery assembly 20 may include a plurality of battery cells 21, which may be connected in series, parallel, or series-parallel to form the battery assembly 20, and the plurality of battery assemblies 20 may be connected in series, parallel, or series-parallel to form the battery 10. The battery cells 21 may have a cylindrical, flat, rectangular, or other shape, and the embodiments of the present application are not limited thereto. The battery cells 21 generally include cylindrical battery cores, prismatic housing battery cores, pouch battery cores, and polygonal prism cross-section battery cores, and the embodiments of the present application are not limited thereto. However, for simplicity of description, the following embodiments will be described using rectangular parallelepiped-shaped lithium-ion battery cells 21 as an example.

[0057] FIG. 4 is a structural schematic diagram of a battery cell 21 according to an embodiment of the present application, and FIG. 5 is an exploded structural schematic diagram of a battery cell 21 according to an embodiment of the present application. FIG. 6 is a structural schematic diagram of a battery cell according to an embodiment of the present application. FIG. 7 is a structural schematic diagram of a battery cell according to an embodiment of the present application. FIG. 8 is a structural schematic diagram of a battery cell according to an embodiment of the present application. The battery cell 21 is the smallest unit constituting the battery 10. As shown in FIGS. 4 to 8, the battery cell 21 includes an end cap 212, a case 211, and an electrode assembly 213.

[0058] The end cap 212 refers to a member that covers the opening of the case 211 and isolates the internal environment of the battery cell 21 from the external environment. The shape of the end cap 212 may be adapted to fit the case 211, but is not limited to this. Optionally, the end cap 212 may be made of a material (e.g., aluminum alloy) with a certain hardness and strength. In this way, the end cap 212 is less likely to deform when pressed or hit, and the battery cell 21 may have higher structural strength and improved safety performance. The end cap 212 may be provided with functional members such as electrode terminals 214. The electrode terminals 214 may be used to electrically connect to the electrode assembly 213 to input and output electrical energy to and from the battery cell 21. In some embodiments, the end cap 212 may further be provided with a pressure relief mechanism that releases internal pressure when the internal pressure or temperature of the battery cell 21 reaches a threshold. In some embodiments, an insulating member may be further installed inside end cap 212, and the insulating member may be used to isolate electrical connections within case 211 from end cap 212 to reduce the risk of short circuits. Illustratively, the insulating member may be plastic, rubber, or the like.

[0059] The case 211 is an assembly that combines with the end cap 212 to form an internal environment of the battery cell 21. The formed internal environment may be used to accommodate the electrode assembly 213, an electrolyte (not shown), and other components. The case 211 and the end cap 212 may be independent components, or an opening may be formed in the case 211, and the end cap 212 is placed over the opening to form the internal environment of the battery cell 21. The end cap 212 and the case 211 may be integrated, but are not limited to this. Specifically, the end cap 212 and the case 211 may form a common connection surface before other components are inserted into the case. When the interior of the case 211 needs to be packaged, the end cap 212 is placed over the case 211. The case 211 may have various shapes and sizes, such as a rectangular parallelepiped, cylindrical, or hexagonal prism. Specifically, the shape of the case 211 may be determined depending on the specific shape and size of the electrode assembly 213. The case 211 may be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application is not particularly limited thereto.

[0060] The electrode assembly 213 is a component in the battery cell 21 where an electrochemical reaction occurs. One or more electrode assemblies 213 may be included in the case 211. The electrode assembly 213 is mainly formed by winding or stacking a positive electrode plate and a negative electrode plate, and a separator is generally provided between the positive electrode plate and the negative electrode plate. The portions of the positive electrode plate and the negative electrode plate that have active material constitute the main body of the electrode assembly 213, and the portions of the positive electrode plate and the negative electrode plate that do not have active material constitute respective tabs (not shown). The positive electrode tab and the negative electrode tab may both be located at one end of the main body, or may be located at both ends of the main body. During the battery charge and discharge process, 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 a current circuit.

[0061] 9 is a structural schematic diagram of a battery 10 according to an embodiment of the present application, FIG. 10 is an exploded structural schematic diagram of the battery 10 according to an embodiment of the present application, and FIG. 11 is a structural schematic diagram of a battery assembly 20 according to an embodiment of the present application. As shown in FIGS. 1 and 4 to 11 , in some embodiments of the present application, the battery 10 includes a thermally conductive member 40 and a battery assembly 20, the thermally conductive member 40 is installed along a first direction, the first direction being the longitudinal direction of the battery 10 or the traveling direction of the power consuming device 1 having the battery 10, the battery assembly 20 includes at least one battery cell 21, the battery assembly 20 is installed along the first direction, the battery cell 21 includes a plurality of surfaces, the plurality of surfaces including a first surface 2111 having a maximum area, and the battery cell 21 is thermally connected to the thermally conductive member 40 via at least the first surface 2111.

[0062] Specifically, as shown in FIGS. 1 , 4 , 10 , and 11 , in some embodiments of the present application, the battery cell 21 may be a rectangular housing-shaped battery cell 21, and the battery cell 21 includes two first surfaces 2111 arranged opposite to each other along a second direction. The thermal conduction member 40 may be thermally connected to the battery cell 21 via the first surfaces 2111, and heat from the battery cell 21 is transferred to the thermal conduction member 40 to realize heat exchange with the battery cell 21. Here, heat exchange with the battery cell 21 includes cooling or heating the battery cell 21. The thermal conduction member 40 may be a thermal conduction plate, a thermal conduction adhesive, or other thermal conduction structure. In some embodiments, a cavity may be further formed inside the thermal conduction member 40. In some embodiments of the present application, the thermal conduction member 40 is arranged along the first direction and attached to the first surfaces 2111, where the thermal conduction member 40 is a thermal conduction plate. The heat conductive plate may be a metal plate, such as a copper plate or an aluminum plate, or other material with a relatively good heat conductivity coefficient ratio. The first direction is the longitudinal direction of the battery 10 or the running direction of the power consuming device 1, and the second direction is the width direction of the battery 10 or the lateral direction of the power consuming device 1.

[0063] 12 is a structural schematic diagram of a battery assembly 20 according to an embodiment of the present application. As shown in FIGS. 1, 4, 10, and 12, in some embodiments of the present application, the battery cell 21 may be a rectangular housing-shaped battery cell 21, and the battery cell 21 includes two first surfaces 2111 arranged opposite to each other along a second direction, and the thermally conductive member 40 is thermally connected to the first surfaces 2111. Here, the first direction is the longitudinal direction of the battery 10 or the traveling direction of the power consuming device 1, and the second direction is the vertical direction.

[0064] Fig. 13 is a structural schematic diagram of a battery assembly 20 according to an embodiment of the present application. Fig. 14 is a structural schematic diagram of a battery cell 21 according to an embodiment of the present application. As shown in Figs. 1, 10, 13, and 14, in some embodiments of the present application, the battery cell 21 may be a cylindrical battery cell 21, and the battery cell 21 includes a cylindrical first surface 2111, and the thermally conductive member 40 is thermally connected to the first surface 2111. Here, the first direction is the longitudinal direction of the battery 10 or the running direction of the power consuming device 1, and the second direction is the width direction of the battery 10 or the lateral direction of the power consuming device 1.

[0065] Fig. 15 is a structural schematic diagram of a battery assembly according to an embodiment of the present application, Fig. 16 is a structural schematic diagram of a battery cell according to an embodiment of the present application, and Fig. 17 is a structural schematic diagram of a battery cell according to an embodiment of the present application. As shown in Figs. 1, 10, 15 to 17, in some embodiments of the present application, the battery cell 21 may be a rectangular housing-shaped battery cell 21, and the battery cell 21 includes two first surfaces 2111 arranged opposite each other along a second direction, and the thermally conductive member 40 is thermally connected to the first surfaces 2111. Here, the first direction is the longitudinal direction of the battery 10 or the running direction of the power consuming device 1, and the second direction is the width direction of the battery 10 or the lateral direction of the power consuming device 1.

[0066] 18 is a structural schematic diagram of a battery assembly according to an embodiment of the present application. As shown in FIGS. 1, 10, 16, and 18, in some embodiments of the present application, the battery cell 21 may be a rectangular housing-shaped battery cell 21, and the battery cell 21 includes two first surfaces 2111 arranged opposite each other along a second direction, and the thermally conductive member 40 is thermally connected to the first surfaces 2111. Here, the first direction is the longitudinal direction of the battery 10 or the traveling direction of the power consuming device 1, and the second direction is the vertical direction.

[0067] 19 is a structural schematic diagram of a battery assembly according to an embodiment of the present application, and FIG. 20 is a structural schematic diagram of a battery cell according to an embodiment of the present application. As shown in FIGS. 1, 10, 19, and 20, the battery cell 21 may be a rectangular housing-shaped battery cell 21, and the battery cell 21 includes two first surfaces 2111 arranged opposite each other along a second direction, and the thermally conductive member 40 is thermally connected to the first surfaces 2111. Here, the first direction is the longitudinal direction of the battery 10 or the running direction of the power consuming device 1, and the second direction is the width direction of the battery 10 or the lateral direction of the power consuming device 1.

[0068] In the battery 10 of the present application, the thermal conduction member 40 is installed along a first direction, which is the longitudinal direction of the battery 10 or the running direction of the power consuming device 1 having the battery 10. That is, both ends of the thermal conduction member 40 are respectively provided at both ends of the longitudinal direction of the battery 10 or at both ends of the running direction of the power consuming device 1. When the power consuming device 1 collides sideways, the impact force does not act directly on the ends of the thermal conduction member 40, thereby preventing damage to the thermal conduction member 40 and ensuring the safety and reliability of the use of the battery 10. At the same time, the battery cells 21 are thermally connected to the thermal conduction member 40 via the first surface 2111, thereby improving the heat exchange effect of the thermal conduction member 40 with the battery cells 21.

[0069] As shown in Figures 4 and 11, in some embodiments of the present application, the first surface 2111 intersects with a horizontal plane.

[0070] Specifically, in some embodiments of the present application, the first surface 2111 may be disposed along the vertical direction.

[0071] As shown in Figures 13 and 14, in some embodiments of the present application, the first surface 2111 intersects with a horizontal plane.

[0072] As shown in Figures 15 and 16, in some embodiments of the present application, the first surface 2111 intersects with a horizontal plane.

[0073] As shown in Figures 19 and 20, in some embodiments of the present application, the first surface 2111 intersects with a horizontal plane.

[0074] Since the first surface 2111 is the surface on which the area of ​​the battery cells 21 is largest, intersecting the first surface 2111 with a horizontal plane can maximize the number of battery cells 21 arranged within the horizontal plane, thereby increasing the overall energy density of the battery 10.

[0075] 21 is a structural schematic diagram of the thermally conductive member 40 according to one embodiment of the present application, FIG. 22 is a structural schematic diagram of the second portion 32 according to one embodiment of the present application, FIG. 23 is an assembled structural schematic diagram of the second portion 32 and the battery assembly 20 according to one embodiment of the present application, and FIG. 24 is an enlarged structural schematic diagram of part A according to one embodiment of the present application. As shown in FIGS. 4, 11, 21, 22, 23, and 24, in some embodiments of the present application, the battery 10 includes at least two battery assemblies 20, and both sides of the thermally conductive member 40 are thermally conductively connected to the two battery assemblies 20 along the second direction, and both the second direction and the first direction intersect with the first surface 2111.

[0076] Specifically, the thermally conductive member 40 is provided between the two battery assemblies 20 and is thermally conductively connected to each of the two battery assemblies 20. Here, the second direction is the width direction of the battery 10 or a direction lateral to the traveling direction of the power consuming device 1.

[0077] As shown in Figures 13, 14, 21, 22, 23 and 24, in some embodiments of the present application, the battery 10 includes at least two battery assemblies 20, and along the second direction, both sides of the thermally conductive member 40 are thermally conductively connected to two battery assemblies 20, respectively, and both the second direction and the first direction intersect with the first surface 2111.

[0078] As shown in Figures 15, 16, 21, 22, 23 and 24, in some embodiments of the present application, the battery 10 includes at least two battery assemblies 20, and along the second direction, both sides of the thermally conductive member 40 are thermally conductively connected to two battery assemblies 20, respectively, and both the second direction and the first direction intersect with the first surface 2111.

[0079] As shown in Figures 19, 20, 21, 22, 23 and 24, in some embodiments of the present application, the battery 10 includes at least two battery assemblies 20, and along the second direction, both sides of the thermally conductive member 40 are thermally conductively connected to two battery assemblies 20, respectively, and both the second direction and the first direction intersect with the first surface 2111.

[0080] By thermally connecting both sides of the heat conducting member 40 to the first surface 2111 of the battery cell 21, the heat exchange effect of the heat conducting member 40 with the battery cell 21 is improved.

[0081] 1, 4, and 11, in some embodiments of the present application, a battery 10 includes at least two battery assemblies 20 arranged along the second direction and at least one thermally conductive member 40, where one first surface 2111 of each battery cell 21 of each battery assembly 20 is thermally conductively connected to one thermally conductive member 40, and both the second direction and the first direction intersect with the first surface. By thermally conductively connecting one first surface 2111 of the battery cell 21 to the thermally conductive member 40, the battery cells 21 can be effectively heat-exchanged, and the number of thermally conductive members 40 installed can be reduced, thereby reducing the weight and cost of the battery 10.

[0082] As shown in FIGS. 1 and 23, in some embodiments of the present application, the longitudinal direction of the battery 10 is parallel to or intersects with the direction of travel of the power consuming device 1.

[0083] Specifically, in some embodiments of the present application, the longitudinal direction of the battery 10 can be installed parallel to the running direction of the power consuming device 1, so that when the thermal conduction member 40 is installed along the longitudinal direction of the battery 10, both ends of the thermal conduction member 40 are respectively provided at both ends of the longitudinal direction of the battery 10, i.e., at both ends of the running direction of the power consuming device 1, and when the power consuming device 1 collides along the lateral direction, the impact force does not act directly on the ends of the thermal conduction member 40, thereby preventing damage to the thermal conduction member 40 and ensuring the safety and reliability of the use of the battery 10.

[0084] In some embodiments of the present application, the longitudinal direction of the battery 10 may be installed at an angle to the direction of travel of the power consumption device 1, and the battery 10 can also power the power consumption device 1, thereby making it easier to install the position of the battery 10.

[0085] As shown in FIGS. 21-24, in some embodiments of the present application, heat exchange medium passages are provided within the heat transfer member 40.

[0086] The heat exchange medium passages are used for the flow of a heat exchange medium, which carries away heat released by the battery cells 21 or heats the battery cells 21, thereby improving the heat exchange efficiency of the battery cells 21. Here, the heat exchange medium may be a heat exchange liquid, and specifically, an oil liquid or an aqueous liquid may be used.

[0087] 25 is a structural schematic diagram of a cross section along the line BB according to an embodiment of the present application, and FIG. 26 is an enlarged structural schematic diagram of a portion C according to an embodiment of the present application. As shown in FIGS. 4, 11, 23, 24, 25, and 26, in some embodiments of the present application, the battery 10 includes a plurality of thermally conductive members 40, which are arranged along a second direction, and both the second direction and the first direction intersect with the first surface 2111.

[0088] As shown in Figures 13, 14, 23, 24, 25 and 26, in some embodiments of the present application, the battery 10 includes a plurality of thermally conductive members 40, which are aligned along a second direction, and both the second direction and the first direction intersect with the first surface 2111.

[0089] As shown in Figures 15, 16, 23, 24, 25 and 26, in some embodiments of the present application, the battery 10 includes a plurality of thermally conductive members 40, which are aligned along a second direction, and both the second direction and the first direction intersect with the first surface 2111.

[0090] As shown in Figures 19, 20, 23, 24, 25 and 26, in some embodiments of the present application, the battery 10 includes a plurality of thermally conductive members 40, which are aligned along a second direction, and both the second direction and the first direction intersect with the first surface 2111.

[0091] A plurality of thermal conductive members 40 are arranged along the third direction, and thermally conductively connect the first surfaces 2111 of the battery cells 21 through the plurality of thermal conductive members 40, respectively, and are used to jointly exchange heat with the battery 10, thereby effectively improving the heat exchange rate for the battery 10.

[0092] As shown in Figures 4, 11, 23, 24, 25 and 26, in some embodiments of the present application, a thermally conductive member 40 is provided on each side of the battery assembly 20 along the second direction, and the battery assembly 20 is thermally conductively connected to the thermally conductive members 40 on both sides.

[0093] As shown in Figures 13, 14, 23, 24, 25 and 26, in some embodiments of the present application, a thermally conductive member 40 is provided on each side of the battery assembly 20 along the second direction, and the battery assembly 20 is thermally connected to the thermally conductive members 40 on both sides.

[0094] As shown in Figures 15, 16, 23, 24, 25 and 26, in some embodiments of the present application, a thermally conductive member 40 is provided on each side of the battery assembly 20 along the second direction, and the battery assembly 20 is thermally conductively connected to the thermally conductive members 40 on both sides.

[0095] As shown in Figures 19, 20, 23, 24, 25 and 26, in some embodiments of the present application, a thermally conductive member 40 is provided on each side of the battery assembly 20 along the second direction, and the battery assembly 20 is thermally connected to the thermally conductive members 40 on both sides.

[0096] By simultaneously connecting both sides of the battery assembly 20 to the heat conducting member 40, heat can be exchanged between both sides of the battery assembly 20 at the same time, which effectively improves the heat exchange rate for the battery 10.

[0097] As shown in Figures 4, 11, 23, 24, 25 and 26, in some embodiments of the present application, along the second direction, the battery cell 21 includes two opposing first surfaces 2111, and the two first surfaces 2111 of the battery cell 21 are thermally conductively connected to one thermal conduction member 40, respectively.

[0098] As shown in Figures 15, 16, 23, 24, 25 and 26, in some embodiments of the present application, along the second direction, the battery cell 21 includes two opposing first surfaces 2111, and the two first surfaces 2111 of the battery cell 21 are thermally conductively connected to one thermal conduction member 40, respectively.

[0099] When the battery cell 21 has two first surfaces 2111 with the largest areas, the two first surfaces 2111 exchange heat simultaneously, thereby effectively improving the heat exchange rate for the battery 10 .

[0100] As shown in Figures 4, 5, 11, 25 and 26, in some embodiments of the present application, the battery cell 21 includes an electrode assembly 213, which includes a main body and a tab protruding from the main body, and the tab is electrically connected to an electrode terminal 214, and the projections of the thermal conduction member 40 and the main body along the second direction at least partially overlap, and both the second direction and the first direction intersect with the first surface 2111.

[0101] Specifically, the heat conduction member 40 is installed so as to extend along a first direction, and is provided on the side surface of the battery cell 21 along a second direction. Here, the first direction is the longitudinal direction of the battery cell 21, and the second direction is the width direction of the battery cell 21.

[0102] As shown in Figures 13, 14, 25 and 26, in some embodiments of the present application, the battery cell 21 includes an electrode assembly 213, the electrode assembly 213 includes a main body 2131 and a tab 2132 protruding from the main body 2131, the tab 2132 is electrically connected to the electrode terminal 214, the projections of the thermal conduction member 40 and the main body 2131 along the second direction at least partially overlap, and both the second direction and the first direction intersect the first surface 2111.

[0103] Specifically, the heat conduction member 40 is installed so as to extend along a first direction, and is provided on the side surface of the battery cell 21 along a second direction. Here, the first direction is the traveling direction of the power consuming device 1, and the second direction is the radial direction of the battery cell 21.

[0104] As shown in Figures 15, 16, 25 and 26, in some embodiments of the present application, the battery cell 21 includes an electrode assembly 213, the electrode assembly 213 includes a main body portion 2131 and a tab 2132 protruding from the main body portion 2131, the tab 2132 is electrically connected to the electrode terminal 214, the projections of the thermal conduction member 40 and the main body portion 2131 along the second direction at least partially overlap, and both the second direction and the first direction intersect the first surface 2111.

[0105] Specifically, the heat conducting member 40 is installed so as to extend along a first direction and is provided on the side of the battery cell 21 along a second direction. Here, the first direction is the traveling direction of the power consuming device 1, and the second direction is the lateral direction of the power consuming device 1.

[0106] As shown in Figures 19, 20, 25 and 26, in some embodiments of the present application, the battery cell 21 includes an electrode assembly 213, the electrode assembly 213 includes a main body portion 2131 and a tab 2132 protruding from the main body portion 2131, the tab 2132 being electrically connected to the electrode terminal 214, and along the second direction, the projections of the thermal conduction member 40 and the main body portion 2131 at least partially overlap, and both the second direction and the first direction intersect with the first surface 2111.

[0107] Specifically, the heat conducting member 40 is installed so as to extend along a first direction and is provided on the side of the battery cell 21 along a second direction. Here, the first direction is the traveling direction of the power consuming device 1, and the second direction is the lateral direction of the power consuming device 1.

[0108] By arranging the thermal conduction member 40 and the main body portion 2131 so that they at least partially overlap along the second direction, heat can be effectively exchanged with the main body portion 2131 through the thermal conduction member 40, thereby ensuring the heat exchange effect on the battery 10.

[0109] As shown in Figures 4, 5, 11, 25 and 26, in some embodiments of the present application, the size of the main body portion 2131 along the third direction is L1, the size of the heat conduction member 40 is L2, and 0.5≦L2 / L1≦1.5, where the first direction, the second direction and the third direction intersect two by two.

[0110] Specifically, the first direction is the longitudinal direction of the battery cell 21, and the third direction is the height direction of the battery cell 21.

[0111] As shown in Figures 13, 14, 25 and 26, in some embodiments of the present application, the size of the main body portion 2131 along the third direction is L1, the size of the heat conduction member 40 is L2, and 0.5≦L2 / L1≦1.5, where the first direction, the second direction and the third direction intersect two by two.

[0112] Specifically, the first direction is the direction in which the power consuming device 1 travels, and the third direction is the height direction of the battery cells 21.

[0113] As shown in Figures 19, 20, 25 and 26, in some embodiments of the present application, the size of the main body 2131 along the third direction is L1, the size of the heat conduction member 40 is L2, and 0.5≦L2 / L1≦1.5, where the first direction, the second direction and the third direction intersect two by two.

[0114] Specifically, the first direction is the direction in which the power consuming device 1 travels, and the third direction is the height direction of the battery cells 21.

[0115] By setting the L2 / L1 ratio in a range greater than 0.5 and less than 1.5 and ensuring that the heat conduction member 40 has a sufficient heat conduction area, heat exchange can be performed with the main body portion 2131, and the heat exchange effect of the heat conduction member 40 on the main body portion 2131 can be significantly enhanced.

[0116] It should be understood that when L2 / L1 is smaller than 0.5, the size of the thermal conductive member 40 is too small and cannot effectively exchange heat with the battery cell 21; when L2 / L1 is larger than 1.5, the size of the thermal conductive member 40 is relatively large and is likely to occupy space in the battery 10, which is disadvantageous for improving the space utilization rate of the battery 10.

[0117] It should be noted that in some embodiments of the present application, the set 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.

[0118] As shown in Figures 4, 5, 11, 25 and 26, in some embodiments of the present application, the size of the overlapping region along the second direction is L3, where 0.5≦L3 / L1≦1.

[0119] By setting the size of the overlapping area in the second direction, the heat exchange area between the heat conduction member 40 and the main body portion 2131 can be set rationally, and the heat exchange effect of the heat conduction member 40 on the main body portion 2131 can be significantly enhanced.

[0120] It should be understood that when L3 / L1 is smaller than 0.5, the overlapping area between the heat conduction member 40 and the main body 2131 is too small, which reduces the heat exchange effect of the heat conduction member 40 on the battery cell 21, and makes it impossible to effectively ensure heat dissipation from the battery cell 21.

[0121] It should be noted that in some embodiments of the present application, the set value of L3 / L1 may be 0.5, 0.6, 0.7, 0.8, 0.9...1.

[0122] 23 and 24 , in some embodiments of the present application, the battery 10 further includes a current collecting member 50, which is in fluid communication with the plurality of heat conducting members 40, wherein the current collecting member 50 is provided at one end of the heat conducting member 40 located in the first direction, or the current collecting member 50 is provided at each of both ends of the heat conducting member 40 located in the first direction. The current collecting member 50 is used to supply or collect the heat exchange medium in the heat exchange medium passage, thereby exchanging heat with the battery 10.

[0123] Specifically, since the multiple heat conduction members 40 are respectively installed along the longitudinal direction of the battery 10 or along the running direction of the power consuming device 1, in order to be fluidly connected to the multiple heat conduction members 40 via the current collecting members 50, the current collecting members 50 are provided at one end of the longitudinal direction of the battery 10 or at the end of the running direction of the power consuming device 1, and the current collecting members 50 are installed at one end or both ends according to actual needs.

[0124] The current collecting member 50 is provided at the end of the heat conducting member 40 in the first direction, so that when the power consuming device 1 collides in the lateral direction, the impact force does not directly act on the current collecting member 50 at the end in the running direction of the power consuming device 1, thereby preventing damage to the current collecting member 50 and ensuring the safety and reliability of the use of the battery 10.

[0125] As shown in Figures 23 and 24, in some embodiments of the present application, there are two current collecting members 50, and the two current collecting members 50 are provided at one end of the heat conducting member 40 located in the first direction, and the two current collecting members 50 are arranged along the third direction, and both the third direction and the first direction intersect with the horizontal plane.

[0126] Specifically, in some embodiments of the present application, the third direction may be a vertical direction, i.e., two current collecting members 50 are installed at an interval along the vertical direction, where the two current collecting members 50 may be a water supply collecting member and a drainage collecting member, respectively.

[0127] By arranging the two current collecting members 50 together at one end in the first direction and arranging them along the third direction, the space occupied by the current collecting members 50 in the battery 10 along the first direction can be effectively reduced, thereby making it easier to install other structures within the battery 10 and improving the energy density of the battery 10. By arranging the two current collecting members 50 together at one end in the first direction, the probability of the current collecting members being damaged when facing a collision in the first direction can be further reduced.

[0128] As shown in Figures 1, 4 and 11, in some embodiments of the present application, the battery cell 21 includes two second surfaces 2121, which are arranged opposite each other along the second direction or the third direction, and the first direction, the second direction and the third direction intersect two by two, the battery cell 21 includes electrode terminals 214, which are arranged on the second surfaces 2121, and the surface area of ​​the second surfaces 2121 is smaller than the surface area of ​​the first surface 2111.

[0129] Specifically, as shown in FIGS. 1 , 4 and 11 , in some embodiments of the present application, the battery cell 21 may include two first surfaces 2111 arranged opposite to each other along the second direction and two second surfaces 2121 arranged opposite to each other along the third direction, where the electrode terminals 214 are provided on the second surfaces 2121. Here, the second direction is a lateral direction of the power consuming device 1, and the third direction is a vertical direction. In some embodiments of the present application, the vertical direction may be set as the second direction, and the lateral direction of the power consuming device 1 may be set as the third direction, i.e., the two second surfaces 2121 are arranged along the second direction, and the electrode terminals 214 are provided on the second surfaces 2121.

[0130] By providing the electrode terminal 214 on the second surface 2121 , power can be supplied to the power consuming device 1 via the electrode terminal 214 on the second surface 2121 .

[0131] 4 and 11 , in some embodiments of the present application, the electrode terminal 214 includes two electrode terminals 214 of 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 2121, respectively. In some embodiments, one of the two electrode terminals 214 may be formed by the case 211 of the battery cell 21.

[0132] 4 and 11, the battery cell 21 includes two electrode terminals 214, and the two electrode terminals 214 are both provided on the same second surface 2121 along the third direction. Here, the third direction may be the vertical direction. In some embodiments of the present application, the two electrode terminals 214 may be provided on the two second surfaces 2121, respectively.

[0133] 4 and 12 , the battery cell 21 includes two electrode terminals 214, and the two electrode terminals 214 are both provided on the same second surface 2121 along the third direction. Here, the third direction is the horizontal direction. In some embodiments of the present application, the two electrode terminals 214 may be provided on the two second surfaces 2121, respectively.

[0134] 13 and 14 , the battery cell 21 includes two electrode terminals 214, and the two electrode terminals 214 are respectively provided on the two second surfaces 2121 along the third direction, one of which is flush with the end face of the battery cell 21, and the end of the battery cell 21 is the electrode terminal 214. Here, the third direction is the vertical direction.

[0135] 16 and 18 , the battery cell 21 may include two electrode terminals 214, and the two electrode terminals 214 may be provided on two second surfaces 2121, respectively. Here, the third direction is the horizontal direction. In some embodiments of the present application, the two electrode terminals 214 may be provided on the same second surface 2121 along the third direction.

[0136] By providing two electrode terminals 214 of opposite polarity on the same second surface 2121 of the battery cell 21 as needed, or by providing them on two second surfaces 2121 respectively, the electrode terminals 214 can escape the first surface 2111 that exchanges heat with the thermal conduction member 40, and then easily connect electrically to another adjacent battery cell 21.

[0137] As shown in FIGS. 1, 19 and 20, in some embodiments of the present application, the electrode terminal 214 is provided on the first surface 2111.

[0138] Specifically, the battery cell 21 includes two electrode terminals 214, and both of the electrode terminals 214 are provided on the first surface 2111. Here, the longitudinal direction of the battery cell 21 is arranged along the first direction, and both of the electrode terminals 214 are provided on the first surface 2111. By providing the electrode terminals 214 on the first surface 2111, it is possible to save the space of the battery 10 that would be occupied by the electrode terminals 214 along the first direction or the third direction, and further increase the energy density of the battery 10.

[0139] As shown in Figures 1, 19 and 20, in some embodiments of the present application, the battery cell 21 includes a first surface 2111 and a fourth surface opposite to the first surface 2111, the first surface 2111 and the fourth surface are opposite to each other along a second direction, and both the second direction and the first direction intersect with the first surface 2111. A recess is provided on the edge of the fourth surface, and the first surface 2111 is used for installing an electrode terminal 214. The electrode terminal 214 is installed to protrude from the first surface 2111 in the second direction and corresponds to the recess.

[0140] By providing the electrode terminals 214 on the first surface 2111 and providing recesses corresponding to the electrode terminals 214 on the edge of the fourth surface, the recesses can accommodate the electrode terminals 214 of adjacent battery cells 21, leaving space for electrical connection operations, making the overall structure of the battery 10 more compact and increasing space utilization.

[0141] As shown in Figures 4 and 11, in some embodiments of the present application, the battery cell 21 further includes a pressure relief mechanism 215, and there is at least one electrode terminal 214, and the pressure relief mechanism 215 and the 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.

[0142] 4 and 11 , the battery cell 21 further includes a pressure relief mechanism 215, and the pressure relief mechanism 215 and the two electrode terminals 214 are both provided on the same second surface 2121 along the third direction, where the third direction is the vertical direction. In some embodiments of the present application, the pressure relief mechanism 215 is provided on one second surface 2121 along the third direction, and the two electrode terminals 214 are both provided on another second surface 2121 along the third direction, or the two electrode terminals 214 are each provided on two second surfaces 2121 along the third direction, and the pressure relief mechanism 215 and one of the electrode terminals 214 are both provided on one of the second surfaces 2121.

[0143] 13 and 14, the battery cell 21 further includes a pressure relief mechanism 215, and one of the second surfaces 2121 has a protruding electrode terminal 214, and both the pressure relief mechanism 215 and the protruding electrode terminal 214 are provided on the second surface 2121. Alternatively, one of the second surfaces 2121 has a protruding electrode terminal 214, and the pressure relief mechanism 215 is provided on another second surface 2121 on which the electrode terminal 214 is not protruding.

[0144] 16 and 18 , the battery cell further includes a pressure relief mechanism 215, and two electrode terminals 214 are respectively disposed on two second surfaces 2121 along a third direction, and the pressure relief mechanism 215 and one of the electrode terminals 214 are both disposed on one of the second surfaces 2121, where the third direction is the horizontal direction. Alternatively, the pressure relief mechanism 215 is disposed on one second surface 2121 along the third direction, and the two electrode terminals 214 are both disposed on different second surfaces 2121 along the third direction, or the pressure relief mechanism 215 and the two electrode terminals 214 are both disposed on the same second surface 2121 along the third direction.

[0145] The pressure relief mechanism 215 communicates with the inside of the battery cell 21 and is used to release the pressure inside the battery cell 21 when the internal pressure of the battery cell 21 increases. The pressure relief mechanism 215 may be provided on the same second surface 2121 as the electrode terminal 214 as needed, or may be provided on each of the two second surfaces 2121, so that the pressure relief mechanism 215 can escape from the first surface 2111 that exchanges heat with the heat conduction member 40, and the pressure relief mechanism 215 can easily release the heat when thermal runaway occurs in the battery cell 21.

[0146] As shown in Figures 6 and 11, in some embodiments of the present application, the battery cell 21 further includes a pressure relief mechanism 215 and two oppositely disposed third surfaces 2112, and the pressure relief mechanism 215 is provided on at least one of the third surfaces 2112.

[0147] Specifically, as shown in Figures 6 and 11, the battery cell 21 includes two second surfaces 2121 arranged opposite each other along a third direction, and electrode terminals 214 are provided on the second surfaces 2121. The battery cell 21 further includes two third surfaces 2112 arranged opposite each other along a first direction, and pressure relief mechanisms 215 are provided on the third surfaces 2112.

[0148] As shown in Figures 17 and 18, the battery cell 21 includes two second surfaces 2121 arranged opposite each other along a third direction, and electrode terminals 214 are provided on the second surfaces 2121. The battery cell 21 further includes two third surfaces 2112 arranged opposite each other along a first direction, and pressure relief mechanisms 215 are provided on the third surfaces 2112.

[0149] By providing the pressure relief mechanism 215 on the third surface 2112 and the electrode terminal 214 on the second surface 2121, the pressure relief mechanism 215 and the electrode terminal 214 are separated, which makes it easier to reduce the risk that the exhaust from the pressure relief mechanism 215 will affect the electrode terminal 214 if thermal runaway occurs in the battery cell 21.

[0150] 8, in some embodiments of the present application, the battery cell 21 further includes a pressure relief mechanism 215, and the pressure relief mechanism 215 is provided on the first surface 2111. By providing the pressure relief mechanism 215 on the first surface 2111, the battery cell 21 can be easily attached.

[0151] 19 and 20 , in some embodiments of the present application, the battery cell 21 further includes a pressure relief mechanism 215, and the pressure relief mechanism 215 is provided on the first surface 2111. By providing the pressure relief mechanism 215 on the first surface 2111, the battery cell 21 can be easily attached.

[0152] As shown in Figures 4, 5 and 11, in some embodiments of the present application, the battery cell 21 includes an electrode assembly 213, which has a wound structure and a flat shape, and the outer surface of the electrode assembly 213 includes two flat surfaces, which face each other along a second direction; or the electrode assembly 213 has a stacked structure, and the first electrode plate, separator and second electrode plate of the electrode assembly 213 are stacked along the second direction, and both the second direction and the first direction intersect with the first surface.

[0153] By installing the electrode assembly 213 in a stacked structure or a wound structure, power can be effectively supplied to the power consuming device 1 through the electrode assembly 213 in either case.

[0154] As shown in FIGS. 4, 10 and 11, in some embodiments of the present application, a battery assembly 20 includes at least two battery cells 21, and the at least two battery cells 21 are aligned along a first direction.

[0155] As shown in FIGS. 4, 10 and 12, in some embodiments of the present application, a battery assembly 20 includes at least two battery cells 21, and the at least two battery cells 21 are aligned along a first direction.

[0156] As shown in Figures 10, 13 and 14, in some embodiments of the present application, a battery assembly 20 includes at least two battery cells 21, and the at least two battery cells 21 are aligned along a first direction.

[0157] 10, 15, and 16, in some embodiments of the present application, a battery assembly 20 includes at least two battery cells 21, and the at least two battery cells 21 are aligned along a first direction. It should be noted that only one battery cell 21 is shown aligned along the first direction in FIG. 16.

[0158] As shown in Figures 10, 16 and 18, in some embodiments of the present application, a battery assembly 20 includes at least two battery cells 21, and the at least two battery cells 21 are aligned along a first direction.

[0159] 10, 19, and 20, in some embodiments of the present application, a battery assembly 20 includes at least two battery cells 21, and the at least two battery cells 21 are aligned along a first direction. It should be noted that only one battery cell 21 is shown aligned along the first direction in FIG. 19.

[0160] When at least two battery cells 21 are arranged along a first direction and the battery cells 21 need to exchange heat, the heat conduction member 40 can be installed along the first direction, thereby facilitating heat exchange between the at least two battery cells 21 in the battery assembly 20, thereby improving the heat exchange rate of the heat conduction member 40.

[0161] As shown in Figures 4, 11, 13, 14, 19 and 20, in some embodiments of the present application, the maximum size of the battery cell 21 along the first direction is L, the maximum size of the battery cell 21 along the third direction is H, and the L / H ratio ranges from 0.5 to 6.

[0162] Here, when the battery cell 21 is as shown in FIG. 4 or FIG. 20, the L / H has a maximum size ratio of 6, and when the battery cell 21 is as shown in FIG. 14, the L / H has a minimum size ratio of 0.5.

[0163] When the L / H size ratio is greater than 6, the size of the battery cell 21 along the first direction is too large, which not only makes it difficult to install but also reduces the support strength of the battery cell 21. When the L / H size ratio is less than 0.5, the size of the battery cell 21 along the third direction is too large, which not only makes it difficult to install but also reduces the support strength of the battery cell 21.

[0164] It should be noted that the set value of L / H may be 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4...5, 5.5...6. By setting different values ​​for L / H, the demands of battery cells 21 having different shapes and different model numbers of batteries 10 can be met.

[0165] The maximum size H of the battery cells 21 includes both the size of the case 211 and the size of the electrode terminals 214 that are installed to protrude from the case 211. By installing the battery cells 21 in accordance with the above size ratio, the support strength of the battery cells 21 is ensured, the amount of power of the battery cells 21 can be maximized, and the battery cells 21 can be easily installed.

[0166] As shown in Figures 4, 11, 13, 14, 19 and 20, in some embodiments of the present application, the maximum size of the battery cells 21 along the second direction is D, where the L / D ratio ranges from 1 to 30, and the first direction, the second direction and the third direction intersect two by two.

[0167] When the L / D size ratio is greater than 30, the size of the battery cell 21 along the first direction is too large, which not only makes it difficult to install but also reduces the support strength of the battery cell 21. When the L / D size ratio is less than 1, the size of the battery cell 21 along the first direction is too small, which reduces the amount of power of the battery cell 21.

[0168] It should be noted that the set value of L / D may be 1, 2, 3, 4, 5, 6, 7, 8, 10, 15, 20, 25, 28, 30. By setting different values ​​for L / D, the battery cells 21 can have different shapes and meet the needs of different models of batteries 10.

[0169] Here, when the battery cells 21 are as shown in the embodiments of Figures 15 to 20, the L / D has a maximum size ratio of 30, and when the battery cells 21 are as shown in Figure 14, the L / D has a minimum size ratio of 1. By installing the battery cells 21 in accordance with the above size ratio, the supporting strength of the battery cells 21 can be ensured and the amount of power of the battery cells 21 can be maximized.

[0170] Fig. 27 is a schematic diagram of the internal structure of the second portion 32 according to an embodiment of the present application, and Fig. 28 is an enlarged schematic diagram of the structure of portion D according to an embodiment of the present application. As shown in Figs. 4, 11, 25, 26, 27, and 28, in some embodiments of the present application, the battery 10 further includes a stopper 321, which is disposed along the third direction and faces the second surface 2121 of the battery cell 21 on which the electrode terminal 214 is provided, the distance between the electrode terminal 214 and the stopper 321 is 1.2 mm to 25 mm, and the third direction and the first direction both intersect with the horizontal plane.

[0171] Specifically, the stopper 321 may be a part of the structure of the housing 30 itself, or the stopper 321 may be connected to the housing 30 and provided within the housing 30. The third direction may be the vertical direction.

[0172] As shown in Figures 13, 14, 25, 26, 27 and 28, in some embodiments of the present application, the battery cell 21 further includes a stopper 321, and the stopper 321 is installed along the third direction opposite to the second surface 2121 of the battery cell 21 on which the electrode terminal 214 is provided, the distance between the electrode terminal 214 and the stopper 321 is 1.2 mm to 25 mm, and both the third direction and the first direction intersect with the horizontal plane.

[0173] If the distance between the electrode terminal 214 and the stopper 321 is less than 1.2 mm, the electrode terminal 214 is likely to collide with the stopper, resulting in damage to the electrode terminal 214. If the distance between the electrode terminal 214 and the stopper 321 is greater than 25 mm, the size of the battery 10 becomes too large, making it difficult to install the battery 10.

[0174] The stopper 321 and the electrode terminal 214 are placed at a distance of 1.2 mm to 25 mm, so that when the battery 10 collides in the third direction, the stopper 321 and the electrode terminal 214 collide with each other, which can prevent damage to the electrode terminal 214.

[0175] It should be noted that the size of the gap between the stopper 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, or 25 mm.

[0176] As shown in Figures 1, 4, 11, 25, 26, 27 and 28, in some embodiments of the present application, at least one electrode terminal 214 is located below the battery cell 21 and the stopper 321 is located below the electrode terminal 214, or at least one electrode terminal 214 is located above the battery cell 21 and the stopper 321 is located above the electrode terminal 214.

[0177] Specifically, the electrode terminal 214 and the stopper 321 are both arranged along the third direction, and the stopper 321 is located below the battery cell 21, i.e., the stopper 321 is located closer to the second portion 32 than the electrode terminal 214. Here, the third direction may be the vertical direction, 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 may be located above the battery cell 21. Alternatively, the electrode terminal 214 and the stopper 321 are both arranged along the third direction, and the stopper 321 is located above the battery cell 21, i.e., the stopper 321 is located closer to the first portion 31 than the electrode terminal 214. 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 may be located above the battery cell 21.

[0178] As shown in Figures 1, 13, 14, 25, 26, 27 and 28, in some embodiments of the present application, the battery cell 21 includes one protruding electrode terminal 214, and the protruding electrode terminal 214 is located below the battery cell 21, and the stopper 321 is located below the electrode terminal 214. Alternatively, the protruding electrode terminal 214 may be located above the battery cell 21, and the stopper 321 may be located above the electrode terminal 214.

[0179] The stopper 321 can be provided below the electrode terminal 214 along the third direction or above the electrode terminal 214 along the third direction, allowing for rational placement based on the actual mounting position.

[0180] As shown in Figures 4, 11, 25, and 26, in some embodiments of the present application, the electrode terminals 214 are provided on one second surface 2121, the battery 10 includes a support plate 311, and the battery cells 21 are fixedly connected to the support plate 311 via another second surface 2121 on which the electrode terminals 214 are not provided, and both the second direction and the first direction intersect with the horizontal plane.

[0181] Specifically, the support plate 311 may be a part of the housing 30 itself, or may be connected to the housing 30 and provided within the housing 30. Here, the support plate 311 may be installed in the first portion 31 or the second portion 32.

[0182] As shown in Figures 4, 11, 25 and 26, the two electrode terminals 214 may both be provided on one of the second surfaces 2121 of the battery cells 21 along the third direction, and the other second surface 2121 without the electrode terminal 214 is fixedly connected to the support plate 311, thereby allowing the battery cell 21 to be fixedly provided within the housing 30.

[0183] As shown in Figures 13, 14, 25 and 26, the electrode terminal 214 is protruding from one of the second surfaces 2121, and the other second surface 2121 on which the electrode terminal 214 is not protruding is fixedly connected to the support plate 311.

[0184] By fixing the battery cells 21 inside the housing 30 via the support plate 311, the battery cells 21 can be easily attached and fixed.

[0185] As shown in Figures 4, 11, 25 and 26, in some embodiments of the present application, another second surface 2121 is fixedly connected to the support plate 311 via a first adhesive layer 61, and the thermal conduction member 40 is thermally conductively connected to the first surface 2111 via a second adhesive layer 62, and the thermal conductivity coefficient of the first adhesive layer 61 is less than or equal to the thermal conductivity coefficient of the second adhesive layer 62.

[0186] Specifically, the surface on which the electrode terminals 214 are not provided is fixedly connected to the support plate 311 via the first adhesive layer 61 .

[0187] 13, 14, 25 and 26, in some embodiments of the present application, the second surface 2121 on which the electrode terminals 214 are not protruding is fixedly connected to the support plate 311 via a first adhesive layer 61, and the thermally conductive member 40 is thermally 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 are each selected as a thermally conductive polyurethane adhesive layer, and different amounts of thermally conductive particles can be added thereto to achieve different thermal conductivity coefficients.

[0188] 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 thermally connect the first surface 2111 and the thermal conduction member 40. Therefore, the thermal conductivity coefficient of the first adhesive layer 61 is set to be equal to or less than the thermal conductivity coefficient of the second adhesive layer 62 to ensure more effective heat exchange with the battery cell 21 through the thermal conduction member 40.

[0189] 25 and 26, in some embodiments of the present application, the ratio of the thermal conductivity coefficient of the first adhesive layer 61 to the thermal conductivity coefficient of the second adhesive layer 62 ranges from 0.1 to 1. By installing them in accordance with this ratio, heat can be effectively exchanged with the battery cells 21 via the thermal conductive member 40.

[0190] It should be understood that when 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 less than 0.1, the thermal conductivity of the first adhesive layer 61 is relatively poor, 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. When 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 greater than 1, the thermal conductivity of the first adhesive layer 61 is stronger than that of the second adhesive layer 62, and the ability of the battery cells 21 to dissipate heat through the thermal conductive member 40 is weakened, resulting in a low heat dissipation effect of the battery cells 21.

[0191] It should be noted that the ratio between the thermal conductivity coefficient of the first adhesive layer 61 and 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.

[0192] As shown in Figures 1 to 28, a second aspect of the present application proposes a power consumption device 1, which includes any one of the batteries 10 described above, and the battery 10 is used to provide electrical energy to drive the power consumption device 1 to run.

[0193] 29 is a schematic diagram of a distribution structure of batteries 10 in an energy consuming device 1 according to an embodiment of the present application. As shown in FIGS. 1 to 29, in some embodiments of the present application, when the longitudinal direction of the batteries 10 is different from the running direction of the energy consuming device 1, the first direction is the running direction of the energy consuming device 1.

[0194] 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 when 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, i.e., 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 thermally 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.

[0195] The power consumption device 1 of the present application may be a mobile phone, a portable device, a laptop computer, a battery-powered vehicle, an electric toy, an electric tool, an electric vehicle, a ship, a spacecraft, etc., for example, a spacecraft includes an airplane, a rocket, a space shuttle, a spaceship, etc.

[0196] The first direction is set as the running direction of the power consumption device 1, and the heat conduction member 40 is installed along the first direction, i.e., the heat conduction member 40 is installed along the running direction of the power consumption device 1 having the battery 10, and both ends of the heat conduction member 40 are respectively located at both ends of the running direction of the power consumption device 1. Therefore, when the power consumption device 1 collides along the lateral direction, the impact force does not act directly on the end of the heat conduction member 40, thereby preventing damage to the heat conduction member 40 and ensuring the safety and reliability of using the battery 10.

[0197] The above description is merely a summary of the technical solution of the present application, which can be implemented in accordance with the content of the specification, so as to make the technical means of the present application more clearly understood, and to make the above and other objectives, features and advantages of the present application more clearly understandable, the following particularly cites specific embodiments of the present application for description.

[0198] As shown in FIGS. 1 , 4 , 5 , 10 , 11 , and 21 to 28 , in one embodiment of the present application, a power consumption device 1 includes a battery 10, which provides electric energy to drive the power consumption device 1 so that it runs. The battery 10 includes a housing 30 and a plurality of battery assemblies 20 provided within the housing 30. The housing 30 includes a first portion 31 and a second portion 32, which enclose a space for accommodating the battery assemblies 20. The plurality of battery assemblies 20 are each arranged along a first direction and aligned along a second direction. The battery assembly 20 includes a plurality of battery cells 21, which are arranged such that the longitudinal direction of the battery cells 21 is aligned along the first direction, the width direction of the battery cells 21 is aligned along the second direction, and the height direction of the battery cells 21 is aligned along a third direction. The battery cell 21 includes two third surfaces 2112 arranged opposite to each other along the first direction, two first surfaces 2111 arranged opposite to each other along the second direction, and two second surfaces 2121 arranged opposite to each other along the third direction, and the first surfaces 2111 are the surfaces with the largest area of ​​the battery cell 21. Here, the first direction is the traveling direction of the power consuming device 1, the longitudinal direction of the battery 10 is parallel to the traveling direction of the power consuming device 1, the second direction is a direction lateral to the traveling direction of the power consuming device 1, and the third direction is the vertical direction.

[0199] The battery cell 21 includes an electrode assembly 213, the electrode assembly 213 including a main body 2131 and a tab 2132 protruding from the main body 2131, the tab 2132 being electrically connected to the electrode terminal 214, and projections of the heat conduction member 40 and the main body 2131 along the second direction at least partially overlap each other and have an overlapping area. The size of the main body 2131 along the third direction is L1, the size of the heat conduction member 40 is L2, and the size of the overlapping area is L3, where 0.5≦L2 / L1≦1.5 and 0.5≦L3 / L1≦1.

[0200] The battery cell 21 includes two electrode terminals 214 with opposite polarities, 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. The maximum size of the battery cell 21 along the first direction is L, the maximum size of the battery cell 21 along the third direction is H, and the L / H ratio ranges from 0.5 to 6. The maximum size of the battery cell 21 along the second direction is D, and the L / D ratio ranges from 1 to 30. The battery 10 further includes a stopper 321, and the stopper 321 is provided on the second portion 32. The stopper 321 is disposed along the third direction opposite the second surface 2121 of the battery cell 21 on which the electrode terminal 214 is provided, the electrode terminal 214 being located below the battery cell 21, the stopper 321 being located below the electrode terminal 214, and the size of the gap between the electrode terminal 214 and the stopper 321 being 1.2 mm to 25 mm.

[0201] A plurality of thermally conductive members 40 are further provided within the housing 30, and the thermally conductive members 40 are arranged along a first direction and aligned along a second direction. A thermally conductive member 40 is provided on each side of the battery assembly 20 along the second direction, and the first surfaces 2111 on each side along the second direction are thermally conductively connected to the thermally conductive members 40. A heat exchange medium passage is provided within the thermally conductive member 40. The battery 10 further includes a current collecting member 50, which is arranged to extend along the second direction and is in fluid communication with the plurality of thermally conductive members 40. The number of current collecting members 50 is two, and both current collecting members are provided at one end of the power consuming device 1 in the traveling direction and are aligned at an interval along a third direction.

[0202] A support plate 311 is further provided within the housing 30, the support plate 311 being provided in the first portion 31, a second surface 2121 on which the electrode terminal 214 is not provided on the battery cell 21 being fixedly connected to the support plate 311 via a first adhesive layer 61, the heat conduction member 40 being thermally connected to the first surface 2111 via a second adhesive layer 62, and the ratio of the thermal conductivity coefficient of the first adhesive layer 61 to the thermal conductivity coefficient of the second adhesive layer 62 being in the range of 0.1 to 1.

[0203] Finally, it should be noted that the above embodiments are merely for illustrating the technical solutions of the present application and are not intended to limit the same. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some or all of the technical features therein may be replaced with equivalents. Such modifications or replacements do not deviate from the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and all of them should be included in the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features recited in the embodiments may be combined in any manner. The present application is not limited to the specific embodiments disclosed in the description, but includes all technical solutions included within the scope of the claims. [Explanation of symbols]

[0204] 1: Vehicle 10: Battery, 11: Controller, 12: Motor 20: battery assembly, 21: battery cell, 211: case, 2111: first surface, 2112: third surface, 212: end cap, 2121: second surface, 213: electrode assembly, 2131: main body, 2132: tab, 214: electrode terminal, 215: pressure relief mechanism, 30: housing, 31: first part, 311: support plate, 32: second part, 321: stopper 40: Heat conducting material 50: Current collecting member 61: First adhesive layer, 62: Second adhesive layer

Claims

1. A battery, a plurality of heat-conducting members (40) and at least two battery assemblies (20); Each of the heat conducting members (40) is installed along a first direction which is the direction of travel of the power consuming device (1) having the battery (10), Each of the battery assemblies (20) includes at least one battery cell (21), and the battery assemblies (20) are installed along the first direction; The battery cell (21) includes a plurality of surfaces, the plurality of surfaces including a first surface (2111) having a maximum area, and each of the battery cells (21) of each of the battery assemblies (20) is thermally connected to at least one of the thermal conduction members (40) via at least the first surface (2111), and the first surface (2111) intersects a horizontal plane; The battery (10) further includes a current collecting member (50), the current collecting member (50) being in fluid communication with heat exchange medium passages within the plurality of heat conducting members (40); Here, the battery is characterized in that the current collecting member (50) is provided at one end of the heat conducting member (40) located in the first direction, or the current collecting member (50) is provided at each of both ends of the heat conducting member (40) located in the first direction.

2. The battery of claim 1, comprising at least two battery assemblies (20) and at least one thermal conduction member arranged along a second direction, one first surface of each battery cell of each battery assembly (20) being thermally conductively connected to one thermal conduction member (40), and both the second direction and the first direction intersecting the first surface (2111).

3. 2. The battery of claim 1, wherein the heat transfer member (40) includes a heat exchange medium passageway.

4. The battery (10) of claim 1, characterized in that it includes a plurality of the thermal conduction members (40), the plurality of the thermal conduction members (40) being arranged along a second direction, and the second direction and the first direction both intersect with the first surface (2111).

5. 5. The battery according to claim 4, wherein the heat conduction members (40) are provided on both sides of the battery assembly (20) along the second direction, and the battery assembly (20) is thermally connected to the heat conduction members (40) on both sides.

6. The battery of claim 5, wherein the battery cell (21) includes two opposing first surfaces (2111) along the second direction, and the two first surfaces (2111) of the battery cell (21) are each thermally conductively connected to one of the thermal conduction members (40).

7. The battery cell (21) includes an electrode assembly (213), the electrode assembly (213) includes a main body portion (2131) and a tab (2132) protruding from the main body portion (2131), the tab (2132) is electrically connected to an electrode terminal (214), the projection of the thermal conduction member (40) and the main body portion (2131) along a second direction at least partially overlaps and has an overlapping area, and both the second direction and the first direction intersect the first surface (2111).

8. The battery of claim 7, characterized in that the size of the main body portion (2131) along the third direction is L1, the size of the heat conduction member (40) is L2, where 0.5≦L2 / L1≦1.5, and the first direction, the second direction, and the third direction intersect two by two.

9. 9. The battery according to claim 8, wherein the size of the overlapping region along the third direction is L3, and 0.5≦L3 / L1≦1.

10. 2. The battery according to claim 1, wherein the number of current collecting members (50) is two, the two current collecting members (50) are provided at one end of the heat conducting member (40) located in the first direction, the two current collecting members (50) are arranged along a third direction, and the first direction, the second direction, and the third direction intersect two by two.

11. The battery of claim 1, wherein the battery cell (21) includes two second surfaces (2121), the two second surfaces (2121) are arranged opposite each other along a second direction or a third direction, the first direction, the second direction, and the third direction intersect two by two, the battery cell (21) includes electrode terminals (214), the electrode terminals (214) are arranged on the second surfaces (2121), and the surface area of ​​the second surfaces (2121) is smaller than the surface area of ​​the first surfaces (2111).

12. The battery of claim 11, characterized in that the electrode terminals (214) include two electrode terminals (214) of opposite polarity, and the two electrode terminals (214) are provided on one of the second surfaces (2121), or the two electrode terminals (214) are provided on two of the second surfaces (2121), respectively.

13. The battery according to claim 1, wherein the battery cell (21) includes an electrode terminal (214), and the electrode terminal (214) is provided on the first surface (2111).

14. The battery cell (21) includes the first surface (2111) and a fourth surface arranged opposite to the first surface, the first surface (2111) and the fourth surface arranged opposite to each other along a second direction, the second direction and the first direction both intersect with the first surface (2111), a recess is provided on the edge of the fourth surface, the first surface (2111) is used to install the electrode terminal (214), and the electrode terminal (214) is installed protruding from the first surface (2111) in the second direction and corresponds to the recess.

13. The battery of claim 13.

15. The battery of claim 11, characterized in that the battery cell (21) further includes a pressure relief mechanism (215), the electrode terminal (214) is at least one, the pressure relief mechanism (215) and the 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 each provided on two second surfaces (2121).

16. The battery of claim 11, wherein the battery cell (21) further includes a pressure relief mechanism (215) and two oppositely disposed third surfaces, and the pressure relief mechanism (215) is provided on at least one of the third surfaces (2121).

17. The battery of claim 11, wherein the battery cell (21) further includes a pressure relief mechanism (215), the pressure relief mechanism (215) being provided on the first surface.

18. The battery cell (21) includes an electrode assembly (213), the electrode assembly (213) has a wound structure and is flat, the outer surface of the electrode assembly (213) includes two flat surfaces, and the two flat surfaces face each other along a second direction; Alternatively, the electrode assembly (213) has a stacked structure, and the first electrode plate, the separator and the second electrode plate of the electrode assembly (213) are stacked along a second direction; The battery of claim 1, wherein the second direction and the first direction both intersect the first surface (2111).

19. 2. The battery according to claim 1, wherein the battery assembly (20) includes at least two of the battery cells (21), and the at least two battery cells (21) are aligned along the first direction.

20. 2. The battery of claim 1, wherein a maximum size of the battery cells (21) along the first direction is L, and a maximum size of the battery cells (21) along the second direction is D, and wherein an L / D ratio ranges from 1 to 30.

21. The battery of claim 20, wherein the maximum size of the battery cells (21) along the third direction is H, the L / H ratio ranges from 0.5 to 6, and the first direction, the second direction, and the third direction intersect two by two.

22. The battery of claim 11, characterized in that the electrode terminal is provided on one of the second surfaces (2121), the battery (10) includes a support plate (311), the battery cell (21) is fixedly connected to the support plate (311) via another of the second surfaces (2121) on which the electrode terminal (214) is not installed, and both the second surface (2121) and the first direction intersect with the horizontal plane.

23. 23. The battery of claim 22, wherein the other second surface is fixedly connected to the support plate via a first adhesive layer (61), the thermally conductive member is thermally connected to the first surface (2111) via a second adhesive layer (62), and the thermal conductivity coefficient of the first adhesive layer (61) is less than or equal to the thermal conductivity coefficient of the second adhesive layer (62).

24. 24. The battery according to claim 23, wherein 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.

25. A power consuming device comprising the battery (10) of claim 1, The power consuming device, characterized in that the battery (10) is used to provide electrical energy to drive the power consuming device (1) to run.

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