Batteries and power-consuming devices

Abstract

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

Description

[Technical field]

[0001] This application relates to the field of battery technology, and 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 had a major impact on traditional fuel vehicles. As a core component of new energy vehicles, batteries play a vital role in the development process of new energy vehicles.

[0003] A battery includes a plurality of battery cells, each of which is provided with electrode terminals, and the battery cells supply power through the electrode terminals. However, due to issues with the installation position of the electrode terminals, the electrode terminals are susceptible to impact when the vehicle crashes, which may cause damage to the electrode terminals and affect the safety of the battery cells. Summary of the Invention

[0004] In view of the deficiencies existing in the prior art, the objective of the present application is to provide a battery and a power consuming device that can effectively solve the problem of causing damage to electrode terminals when a vehicle is impacted.

[0005] A first aspect of the present application discloses a battery including a battery assembly, The battery assembly includes at least one battery cell, and the battery assembly is installed along a first direction, the first direction being a longitudinal direction of the battery or a traveling direction of a power consuming device having the battery; The battery cell includes 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 arranged opposite each other, the two second surfaces being respectively connected to the first surface, the battery cell further including electrode terminals, the electrode terminals being provided on the first surface or at least one of the second surfaces.

[0006] According to the battery of the present application, when the electrode terminal is provided on the second surface, the electrode terminal may be provided along the vertical direction or along the traveling direction of the power consuming device, so that the electrode terminal is less likely to be impacted when the power consuming device collides along the side of the traveling direction, thereby avoiding damage to the electrode terminal and ensuring normal power supply of the battery; when the electrode terminal is provided on the first surface, since the first surface is the surface with the largest area, the occupancy rate of the electrode terminal on the first surface is small, so that when an impact occurs to the power consuming device, the electrode terminal is less likely to be impacted, thereby avoiding damage to the electrode terminal and ensuring normal power supply of the battery.

[0007] In some embodiments of the present application, the two second surfaces are disposed opposite to each other along a second direction, which intersects with the first direction. The second direction may be a vertical direction, whereby the two second surfaces are disposed opposite to each other along the vertical direction, i.e., the electrode terminals are disposed along the vertical direction, whereby the electrode terminals are less likely to be impacted when the power consuming device collides along a lateral direction of the traveling direction.

[0008] In some embodiments of the present application, the two second surfaces are disposed opposite to each other along the first direction, i.e., the electrode terminals are disposed along the traveling direction along the power consuming device, so that the electrode terminals are less likely to be impacted when the power consuming device is hit in a lateral direction of the traveling direction.

[0009] In some embodiments of the present application, the first surface intersects with a horizontal plane, the first surface being the surface with the largest area of ​​the battery cells, and by intersecting the first surface with the horizontal plane, the number of battery cells arranged in the horizontal plane can be maximized, thereby improving the overall energy density of the battery.

[0010] In some embodiments of the present application, the second direction intersects or is parallel to a horizontal plane, i.e., the second direction may be substantially vertical or horizontal, and the corresponding second surface may be disposed along a substantially horizontal or vertical direction.

[0011] In some embodiments of the present application, the battery assembly further includes a thermally conductive member, the thermally conductive member is arranged along a first direction, and each battery cell of the battery assembly is thermally conductively connected to the thermally conductive member through at least a first surface. The thermally conductive member is arranged along the first direction, and the thermally conductive member can exchange heat with any battery cell in the battery assembly, and at the same time, when the power consumption device is hit along the side direction, the impact force does not directly act on the end of the thermally conductive member, avoiding damage to the thermally conductive member, and at the same time, the battery cell is thermally conductively connected to the thermally conductive member through the first surface, and the contact area between the thermally conductive member and the battery cell can be maximized, thereby ensuring the heat exchange effect of the thermally conductive member on the battery cell.

[0012] 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 respectively along a third direction, and the third direction crosses both the first direction and the first surface, i.e., both sides of the thermally conductive member are thermally conductively connected to the first surfaces of the battery cells respectively, thereby improving the heat exchange effect of the thermally conductive member with the battery cells.

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

[0014] In some embodiments of the present application, a heat exchange medium passage is provided in the heat conductive member, which is used for flowing a heat exchange medium through the heat exchange medium passage, thereby removing heat released from the battery cells or heating the battery cells through the flow of the heat exchange medium, and further improving the heat exchange efficiency of the battery cells.

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

[0016] In some embodiments of the present application, a heat conductive member is provided on each side of the battery assembly along the third direction, and the battery assembly is thermally connected to the heat conductive members on both sides. Both sides of the battery assembly are thermally connected to the heat conductive members at the same time, and heat is dissipated through both sides of the battery assembly at the same time, which effectively improves the heat exchange rate for the battery.

[0017] In some embodiments of the present application, along the third direction, the battery cell includes two opposing first surfaces, 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, the two first surfaces can be simultaneously dissipated to effectively improve the heat exchange rate for the battery.

[0018] In some embodiments of the present application, the battery cell includes an electrode assembly, the electrode assembly includes a body and a tab protruding from the body, the tab is electrically connected to the electrode terminal, the projections of the thermally conductive member and the body at least partially overlap and have an overlapping area along a third direction, and the third direction intersects both the first direction and the first surface. By arranging the thermally conductive member and the body to at least partially overlap along the third direction, the thermally conductive member can effectively exchange heat with the body, thereby improving the heat exchange effect for the battery cell.

[0019] In some embodiments of the present application, along the second direction, the size of the body is L1, and the size of the heat conducting 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 range value is set to be greater than 0.5 and less than 1.5 to ensure that the heat conducting member has a sufficient heat conducting area to exchange heat with the body, and greatly enhance the heat exchange effect of the heat conducting member to the body.

[0020] 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. By setting the size of the overlapping region in the second direction, the heat exchange area between the heat conducting member and the main body can be appropriately set, and the heat exchange effect of the main body by the heat conducting member can be significantly enhanced.

[0021] In some embodiments of the present application, the battery further includes a current collecting member in fluid communication with the plurality of thermally conductive members; Here, a current collecting member is provided at one end of the heat conducting member located in a 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 to exchange heat with the battery, and the current collecting member is provided at the end of the heat conducting member in the first direction, so that when the power consuming device collides along the lateral direction, the impact force does not directly act on the end of the heat conducting member, thereby preventing damage to the heat conducting member and ensuring the safety and reliability of the use of the battery.

[0022] In some embodiments of the present application, the number of current collecting members is two, 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 second direction, and the second direction intersects both the first direction and the horizontal plane. The two current collecting members are provided together at one end of the first direction and arranged along the second direction, which can effectively reduce the space occupied by the current collecting members in the battery along the first direction, thereby facilitating the installation of other structures in the battery and improving the energy density of the battery; the two current collecting members are provided together at one end of the first direction, which can further reduce the probability of the current collecting members being damaged when colliding facing the first direction.

[0023] In some embodiments of the present application, the electrode terminal includes two electrode terminals with opposite polarities, 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 with opposite polarities may be provided on the same second surface of the battery cell, or on two second surfaces, respectively, as required, so that the electrode terminals avoid the first surface exchanging heat with the thermal conductive member and facilitate subsequent electrical connection with other adjacent battery cells.

[0024] In some embodiments of the present application, the battery cell further includes a pressure relief mechanism, and the pressure relief mechanism and 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 inside of the battery cell and is used to release the internal pressure of the battery cell when the internal pressure of the battery cell rises. The pressure relief mechanism may be provided on the same second surface as the electrode terminal, or on two second surfaces, respectively, as necessary, so that the pressure relief mechanism avoids the first surface that exchanges heat with the thermal conductive member, and when thermal runaway occurs in the battery cell, the pressure relief mechanism smoothly releases air.

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

[0026] In some embodiments of the present application, the battery cell includes a first surface and a fourth surface disposed opposite to the first surface, the first surface and the fourth surface are disposed opposite to each other along a third direction, the third direction intersects both the first direction and the first surface, a recess is provided on an edge of the fourth surface, the first surface is used for mounting an electrode terminal, the electrode terminal protrudes from the first surface in the third direction and corresponds to the recess. By providing the electrode terminal on the first surface and providing a recess corresponding to the electrode terminal on the edge of the fourth surface, the electrode terminal of the adjacent battery cell is accommodated through the recess, leaving an operational space for electrical connection, making the overall structure of the battery more compact and having a high space utilization rate.

[0027] In some embodiments of the present application, a battery cell includes an electrode assembly, the electrode assembly has a wound structure and is flat, an outer surface of the electrode assembly includes two flat surfaces, and the two flat surfaces face each other along a third direction; Or, the electrode assembly has a stacked structure, and the first plate, the separator and the second plate of the electrode assembly are stacked along a third direction; The third direction intersects both the first direction and the first surface.By arranging the electrode assembly in a stacked structure or a wound structure, either one can effectively supply power to a power consuming device by 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 needs to be performed for the battery cells, a heat conducting member is installed along the first direction to facilitate heat exchange with the at least two battery cells in the battery assembly, respectively, thereby improving the heat exchange speed of the heat conducting member.

[0029] In some embodiments of the present application, the maximum size of the battery cell along the first direction is L, the maximum size of the battery cell along the second direction is H, the L / H range value is 0.5-6, and the second direction intersects both the first direction and the horizontal plane. By installing the battery cells with the above size ratio, the supporting strength of the battery cells can be guaranteed and the power amount of the battery cells can be maximized.

[0030] In some embodiments of the present application, along the third direction, the maximum size of the battery cells is D, where the L / D range value is 1 to 30, and the first direction, the second direction and the third direction intersect two by two. By installing the battery cells with the above size ratio, the supporting strength of the battery cells can be guaranteed and the power amount of the battery cells can be maximized.

[0031] In some embodiments of the present application, the battery further includes a baffle disposed along a second direction facing the second surface on which the electrode terminals of the battery cells are provided, the distance between the electrode terminals and the baffle is 1.2 mm to 25 mm, and the second direction intersects with both the first direction and the horizontal plane. By disposing the baffle and the electrode terminals at an interval of 1.2 mm to 25 mm, when the battery is subjected to an impact along the second direction, it is possible to prevent the baffle and the electrode terminals from being impacted and thus causing damage to the electrode terminals.

[0032] In some embodiments of the present application, at least one electrode terminal is located below the battery cell, and the baffle is located below the electrode terminal, or at least one electrode terminal is located above the battery cell, and the baffle is located above the electrode terminal. The baffle may be provided below the battery cell along the second direction, or above the battery cell along the second direction, thereby making a reasonable installation arrangement according to the actual installation position.

[0033] In some embodiments of the present application, the electrode terminal is provided on one of the second surfaces, the battery further includes a support plate, the battery cell is fixedly connected to the support plate via the other second surface on which the electrode terminal is not provided, and the second direction intersects both the first direction and the horizontal plane. By fixing the battery cell in the housing via the support plate, it is easy to install and fix the battery cell.

[0034] In some embodiments of the present application, another second surface is fixedly connected to the support plate through a first adhesive layer, the thermal conductive member is thermally conductively connected to the first surface through a second adhesive layer, and the thermal conductivity coefficient of the first adhesive layer is equal to or less than the thermal conductivity coefficient 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 thermal conductive member, the thermal conductivity coefficient of the first adhesive layer is set to be equal to or less than the thermal conductivity coefficient of the second adhesive layer, ensuring more effective heat exchange of the battery cells through the thermal conductive member.

[0035] 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. Any of the above ratio ranges can effectively exchange heat with the battery cell through the thermal conductive member.

[0036] A second aspect of the present application provides a power consumption device including the battery of any one of the above claims, the battery being used to provide electrical energy to drive and run the power consumption device.

[0037] In some embodiments of the present application, when the longitudinal direction of the battery and the running direction of the power consuming device are different, the first direction is the running direction of the power consuming device. When the first direction is set to the running direction of the power consuming device and the electrode terminal is provided on the second surface, the electrode terminal may be provided along the vertical direction or along the running direction of the power consuming device, so that the electrode terminal is not impacted when the power consuming device is hit along the side direction of the running direction, thereby avoiding damage to the electrode terminal and ensuring normal power supply of the battery; when the electrode terminal is provided on the first surface, the first surface is the surface with the largest area, so that the occupancy rate of the electrode terminal on the first surface is small, and when an impact occurs to the power consuming device, the electrode terminal is not impacted, thereby avoiding damage to the electrode terminal and ensuring normal power supply of the battery.

[0038] The above description is only an outline of the technical solution of the present application, which can be implemented in accordance with the contents of the specification in order to more clearly understand the technical means of the present application, and in order to make the above and other objectives, features and advantages of the present application more obvious and understandable, the following particularly cites specific embodiments of the present application for description. [Brief description of the drawings]

[0039] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The drawings are only used to illustrate the purpose of the preferred embodiments, but are not to be considered as limitations on the present application. Also, the same elements are designated by the same reference numerals throughout the drawings. In the drawings, [Figure 1] 1 is a structural schematic diagram of a vehicle according to an embodiment of the present application; [Diagram 2] FIG. 2 is an exploded structural schematic diagram of a battery according to an embodiment of the present application. [Diagram 3] FIG. 2 is a structural schematic diagram of a battery assembly according to an embodiment of the present application. [Figure 4] FIG. 2 is a structural schematic diagram of a battery cell according to an embodiment of the present application. [Diagram 5] FIG. 2 is an exploded structural schematic diagram of a battery cell according to an embodiment of the present application. [Figure 6] FIG. 1 is a structural schematic diagram of a battery according to an embodiment of the present application. [Figure 7] FIG. 2 is an exploded structural schematic diagram of a battery according to an embodiment of the present application. [Figure 8] FIG. 2 is a structural schematic diagram of a battery assembly according to an embodiment of the present application. [Figure 9] FIG. 2 is a structural schematic diagram of a battery assembly according to an embodiment of the present application. [Figure 10] FIG. 2 is a structural schematic diagram of a battery assembly according to an embodiment of the present application. [Figure 11] FIG. 2 is a structural schematic diagram of a battery cell according to an embodiment of the present application. [Figure 12] FIG. 2 is a structural schematic diagram of a battery assembly according to an embodiment of the present application. [Figure 13] FIG. 2 is a structural schematic diagram of a battery cell according to an embodiment of the present application. [Figure 14] FIG. 2 is a structural schematic diagram of a battery assembly according to an embodiment of the present application. [Figure 15] FIG. 2 is a structural schematic diagram of a battery assembly according to an embodiment of the present application. [Figure 16] FIG. 2 is a structural schematic diagram of a battery cell according to an embodiment of the present application. [Figure 17] FIG. 2 is a structural schematic diagram of a heat-conducting member according to an embodiment of the present application. [Figure 18] FIG. 2 is a structural schematic diagram of a second portion according to an embodiment of the present application. [Figure 19] 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 20] FIG. 2 is an enlarged structural schematic diagram of part A according to one embodiment of the present application. [Figure 21] FIG. 1 is a schematic diagram of a BB cross-sectional structure according to an embodiment of the present application. [Figure 22] FIG. 2 is an enlarged structural schematic diagram of part C according to an embodiment of the present application. [Figure 23] FIG. 2 is a schematic diagram of the internal structure of the second portion according to an embodiment of the present application. [Figure 24]FIG. 2 is an enlarged structural schematic diagram of part D according to an embodiment of the present application. [Diagram 25] FIG. 2 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 PREFERRED EMBODIMENTS

[0040] The following describes in detail the embodiments of the technical solution of the present application in conjunction with the drawings. The following embodiments are only used to more clearly explain the technical solution of the present application, and are only used as examples, which cannot limit the protection scope of the present application.

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

[0042] In describing the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial direction," "radial direction," "circumferential direction," and the like are orientations or positional relationships shown based on the drawings, and are intended only to facilitate describing and simplify the embodiments of the present application, and do not indicate or imply that the devices or elements referred to have a specific orientation and must be configured and operated in a specific orientation, and therefore should not be understood as limitations on the embodiments of the present application.

[0043] It should be noted that the technical terms "first", "second", etc. are for descriptive purposes only and should not be understood as indicating or implying the relative importance or the number of technical features being indicated. In the description of the embodiments of this application, unless there is a clear and specific limitation, the meaning of "plurality" is two or more.

[0044] In the description of the embodiments of the present application, unless otherwise clearly defined or limited, the technical terms "attached", "connected", "connected", "fixed" and the like should be understood in a broad sense, and may refer to, for example, a fixed connection, a removable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, internal communication between two elements, or an interactive relationship between two elements. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present application according to the specific circumstances.

[0045] In the description of the embodiments of the present application, unless otherwise clearly defined or limited, a first feature being "above" or "below" a second feature means that the first feature may be in direct contact with the second feature, or that the first feature may be in indirect contact with the second feature via an intermediate medium. Furthermore, a first feature being "above," "above," and "on the upper surface" of a second feature means that the first feature is directly above or diagonally above the second feature, or simply that the horizontal height of the first feature is higher than that of the second feature. A first feature being "below," "below," and "on the lower surface" of a second feature means that the first feature is directly below or diagonally below the second feature, or simply that the horizontal height of the first feature is lower than that of the second feature.

[0046] At present, in view of the development of the market situation, the application of power batteries is becoming more and more widespread. Power batteries are not only used in energy storage power systems such as hydroelectric, thermal, wind and solar power stations, but also widely used in electric transportation tools such as electric bicycles, electric motorcycles, electric cars, and military equipment and aerospace. Lithium-ion batteries have the advantages of high energy density, high average open circuit voltage and long cycle life, and have been widely used in mobile and portable electrical appliances.

[0047] The inventor of the present application found that a battery includes a number of battery cells, each of which is provided with electrode terminals, and the battery cells supply power through the electrode terminals. However, due to the problem of the installation position of the electrode terminals, the electrode terminals are easily impacted when the vehicle crashes, which may cause damage to the electrode terminals, affect the normal power supply process of the battery cells, and even pose a safety risk.

[0048] In order to solve the problem of causing damage to the electrode terminal when an impact occurs to a vehicle, the inventors of the present application have conducted intensive research and designed a battery including a battery assembly, the battery assembly including at least one battery cell, the battery assembly being installed along a first direction, the first direction being a longitudinal direction of the battery or a traveling direction of a power consuming device having the battery, the battery cell including a plurality of surfaces, the plurality of surfaces including a first surface having a largest area, the plurality of surfaces further including two second surfaces installed oppositely along a second direction, the second direction intersecting the first direction, the battery cell further including an electrode terminal, the electrode terminal being provided on the first surface or at least one of the second surfaces.

[0049] According to the battery of the present application, when the electrode terminals are provided on the second surfaces, the two second surfaces are arranged opposite each other along the second direction, and the second direction intersects with the first direction, i.e., the electrode terminals are not provided at the longitudinal ends of the battery or the ends in the running direction of the power consuming device, so that when an impact occurs to the power consuming device along the running direction, the electrode terminals will not be impacted, thereby avoiding damage to the electrode terminals and ensuring normal power supply of the battery; when the electrode terminals are provided on the first surfaces, the first surface is the surface with the largest area, and therefore the occupancy rate of the electrode terminals on the first surface is small, so that when an impact occurs to the power consuming device, the electrode terminals will not be impacted, thereby avoiding damage to the electrode terminals and ensuring normal power supply of the battery.

[0050] 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, for example, spacecraft including airplanes, rockets, spacecraft, and spaceships, and the battery is used to provide electrical energy to the power consumption devices.

[0051] It should be understood that the technical solutions described in the embodiments of the present application are not only applicable to the batteries and power consumption devices described above, but also to batteries including all housings and power consumption devices that use batteries, but for the sake of brevity, the following embodiments are all described using an electric vehicle as an example.

[0052] 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 an embodiment of the present application. FIG. 3 is a structural schematic diagram of a battery assembly 20 according to an embodiment of the present application. As shown in FIGS. 1 to 3, the vehicle 1 may be a gasoline vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or a range extender vehicle, etc. A battery 10 is installed inside the vehicle 1, and the battery 10 may be installed at the bottom, head, or tail of the vehicle 1. The battery 10 may be used to supply power to 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 supply power to the motor 12, for example, for use in starting the vehicle 1, navigation, and operating power consumption needs during driving.

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

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

[0055] As shown in FIG. 2 and FIG. 3, the battery 10 may include a plurality of battery assemblies 20 and a housing 30, and the plurality of battery assemblies 20 are housed inside 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 be a simple three-dimensional structure such as a single rectangular parallelepiped, cylinder, or sphere, or a complex three-dimensional structure combined with a simple three-dimensional structure such as a rectangular parallelepiped, cylinder, or sphere, but is not limited thereto in the embodiment of the present application. The material of the housing 30 may be an alloy material such as an aluminum alloy or an iron alloy, a polymer material such as polycarbonate or polyisocyanurate foam, or a composite material made by adding epoxy resin to glass fiber, but is not limited thereto in the embodiment of the present application.

[0056] In some embodiments, the housing 30 may include a first portion 31 and a second portion 32, the first portion 31 and the second portion 32 being placed over each other, and the first portion 31, together with the second portion 32, defining a space for accommodating the battery cells 21. The second portion 32 has a hollow structure with an opening at one end, and the first portion 31 may have a plate-like structure, and the first portion 31 is placed over the opening side of the second portion 32, so that the first portion 31, together with the second portion 32, defines a space for accommodating the battery cells 21, and both the first portion 31 and the second portion 32 may have a hollow structure with an opening at one end, and the opening side of the first portion 31 is placed over the opening side of the second portion 32.

[0057] The battery assembly 20 may include a plurality of battery cells 21, and the plurality of battery cells 21 may be first connected in series, parallel, or series-parallel to form the battery assembly 20, and then the plurality of battery assemblies 20 may be further connected in series, parallel, or series-parallel to form the battery 10. The battery cells 21 may be cylindrical, flat, rectangular, or other shapes, and the embodiments of the present application are not limited thereto. The battery cells 21 generally include cylindrical battery cores, rectangular battery cores, pouch-shaped battery cores, and polygonal columnar cross-section battery cores, and the embodiments of the present application are not limited thereto. For the sake of simplicity, the following embodiments will be described taking rectangular lithium-ion battery cells 21 as an example.

[0058] 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 the battery cell 21 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 and 5, the battery cell 21 includes an end cover 212, a case 211, and an electrode assembly 213.

[0059] The end cap 212 refers to a member that covers the opening of the case 211 to isolate the internal environment of the battery cell 21 from the external environment. The shape of the end cap 212 may be adapted to the shape of the case 211 so as to fit the case 211. Alternatively, the end cap 212 may be made of a material (e.g., aluminum alloy) having a certain hardness and strength, so that the end cap 212 is less likely to be deformed when extruded and hit, and the battery cell 21 may have higher structural strength and improved safety performance. A functional member such as an electrode terminal 214 may be installed on the end cap 212. The electrode terminal 214 may be used to electrically connect to the electrode assembly 213 to output or input electrical energy of the battery cell 21. In some embodiments, the end cap 212 may further be installed with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 21 reaches a threshold value. In some embodiments, an insulating material may be further installed on the inside of the end cap 212, and the insulating material is used to isolate the electrical connection members in the case 211 from the end cap 212 to reduce the risk of short circuit. Illustratively, the insulating material may be plastic, rubber, etc.

[0060] The case 211 is an assembly to be fitted to the end cap 212 to form an internal environment of the battery cell 21, where 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 provided on the case 211, and the end cap 212 may be placed over the opening to form the internal environment of the battery cell 21. Without being limited thereto, the end cap 212 and the case 211 may be integrated, specifically, the end cap 212 and the case 211 may first form a common connection surface before other components are inserted into the case, and when the inside 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, a cylindrical body, a hexagonal prism, etc. Specifically, the shape of the case 211 may be determined according to 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 does not impose any particular limitations thereon.

[0061] The electrode assembly 213 is a member that generates an electrochemical reaction in the battery cell 21. 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 parts of the positive electrode plate and the negative electrode plate that have active materials constitute the main body of the electrode assembly 213, and the parts of the positive electrode plate and the negative electrode plate that do not have active materials constitute tabs (not shown in the figure). The positive electrode tab and the negative electrode tab may both be located at one end of the main body, or may be located at both ends of the main body. During charging and discharging of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tabs are connected to the electrode terminals 214 to form a current circuit.

[0062] 6 is a structural schematic diagram of a battery 10 according to an embodiment of the present application, and FIG. 7 is an exploded structural schematic diagram of a battery 10 according to an embodiment of the present application. As shown in FIG. 3 to FIG. 7, in some embodiments of the present application, the battery 10 includes a battery assembly 20, the battery assembly 20 includes at least one battery cell 21, the battery assembly 20 is installed along a first direction, the first direction is the longitudinal direction of the battery 10 or the running direction of a power consumption device having the battery 10, the battery cell 21 includes a plurality of surfaces, the plurality of surfaces includes a first surface 2111 having the largest area, and the plurality of surfaces further includes two second surfaces 2121 that are installed opposite to each other along a second direction, the second direction intersects both the first direction and a horizontal plane, and the battery cell 21 further includes an electrode terminal 214, and the electrode terminal 214 is provided on at least one of the second surfaces 2121.

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

[0064] When the electrode terminal 214 is provided on the second surface 2121, i.e., the electrode terminal 214 is installed along the vertical direction, if an impact occurs along the side of the traveling direction of the power consuming device 1, the electrode terminal 214 will not be impacted, thereby avoiding damage to the electrode terminal 214 and ensuring normal power supply of the battery 10.

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

[0066] When the electrode terminal 214 is provided on the second surface 2121, i.e., the electrode terminal 214 is installed along the vertical direction, if an impact occurs along the side of the traveling direction of the power consuming device 1, the electrode terminal 214 will not be impacted, thereby avoiding damage to the electrode terminal 214 and ensuring normal power supply of the battery 10.

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

[0068] When the electrode terminals 214 are provided on the second surfaces 2121, the two second surfaces 2121 are arranged opposite each other along the first direction, i.e., the electrode terminals 214 are arranged at the longitudinal ends of the battery 10 or the ends in the running direction of the power consuming device 1. Therefore, when an impact occurs along the lateral direction of the running direction of the power consuming device 1, the electrode terminals 214 will not be impacted, thereby avoiding damage to the electrode terminals 214 and ensuring normal power supply of the battery 10.

[0069] FIG. 10 is a structural schematic diagram of a battery assembly 20 according to an embodiment of the present application, and FIG. 11 is a structural schematic diagram of a battery cell 21 according to an embodiment of the present application. As shown in FIG. 1, FIG. 7, FIG. 10, and FIG. 11, in some embodiments of the present application, the battery cell 21 is a cylindrical battery cell 21. The battery cell 21 includes a cylindrical first surface 2111 and two second surfaces 2121 disposed opposite to each other along a second direction. Here, an electrode terminal 214 is protruded from one of the second surfaces 2121. Here, the first direction may be the longitudinal direction of the battery 10 or the traveling direction of the power consuming device 1, and the second direction may be the vertical direction.

[0070] When the electrode terminal 214 is provided on the second surface 2121, i.e., the electrode terminal 214 is installed along the vertical direction, if an impact occurs along the side of the traveling direction of the power consuming device 1, the electrode terminal 214 will not be impacted, thereby avoiding damage to the electrode terminal 214 and ensuring normal power supply of the battery 10.

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

[0072] When the electrode terminal 214 is provided on the second surface 2121, i.e., the electrode terminal 214 is installed at the longitudinal end of the battery 10 or the end in the running direction of the power consuming device 1, if an impact occurs along the side direction of the running direction of the power consuming device 1, the electrode terminal 214 will not be impacted, thereby avoiding damage to the electrode terminal 214 and ensuring normal power supply of the battery 10.

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

[0074] When the electrode terminal 214 is provided on the second surface 2121, i.e., the electrode terminal 214 is installed at the longitudinal end of the battery 10 or the end in the running direction of the power consuming device 1, if an impact occurs along the side direction of the running direction of the power consuming device 1, the electrode terminal 214 will not be impacted, thereby avoiding damage to the electrode terminal 214 and ensuring normal power supply of the battery 10.

[0075] FIG. 15 is a structural schematic diagram of a battery assembly according to an embodiment of the present application, and FIG. 16 is a structural schematic diagram of a battery cell according to an embodiment of the present application. As shown in FIG. 1, FIG. 7, FIG. 15, and FIG. 16, in some embodiments of the present application, the battery cell 21 is a rectangular battery cell 21. The battery cell 21 includes two first surfaces 2111 arranged opposite to each other along a third direction, two second surfaces 2121 arranged opposite to each other along a second direction, and further includes two third surfaces 2112 arranged opposite to each other along the first direction. Here, an electrode terminal 214 is provided on the first surface 2111. Here, the first direction may be the longitudinal direction of the battery 10 or the running direction of the power consuming device 1, the second direction may be the vertical direction, and the third direction may be the width direction of the battery 10 or the lateral direction of the power consuming device 1.

[0076] When the electrode terminal 214 is provided on the first surface 2111, the first surface 2111 has the largest area, and therefore the occupancy rate of the electrode terminal 214 on the first surface 2111 is small. Therefore, when an impact occurs to the power consuming device 1, the electrode terminal 214 is less likely to be impacted, thereby avoiding damage to the electrode terminal 214 and ensuring normal power supply of the battery 10.

[0077] According to the battery 10 of the present application, when the electrode terminal 214 is provided on the second surface 2121, the electrode terminal 214 may be provided along the vertical direction or along the traveling direction of the power consuming device 1, so that the electrode terminal 214 will not be impacted when the power consuming device 1 collides along the side direction of the traveling direction, thereby avoiding damage to the electrode terminal 214 and ensuring normal power supply of the battery 10; when the electrode terminal 214 is provided on the first surface 2111, the first surface 2111 is the surface with the largest area, so that the occupancy rate of the electrode terminal 214 on the first surface 2111 is small, and when an impact occurs to the power consuming device 1, the electrode terminal 214 is less likely to be impacted, thereby avoiding damage to the electrode terminal 214 and ensuring normal power supply of the battery 10.

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

[0079] Specifically, in some embodiments of the present application, the first surface 2111 may be disposed along a vertical direction.

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

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

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

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

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

[0085] Specifically, the heat conducting member 40 can be thermally connected to the battery cell 21, and the heat of the battery cell 21 is conducted to the heat conducting member 40, thereby realizing heat exchange with the battery cell 21. Here, the heat exchange with the battery cell 21 includes cooling and dissipating heat with the battery cell 21, or heating with the battery cell 21. The heat conducting member 40 may adopt a heat conducting plate, a heat conducting adhesive, or a heat conducting structure, and in some embodiments, the heat conducting plate may adopt a metal plate, such as a copper plate, an aluminum plate, or other materials with a relatively high thermal conductivity coefficient. In some embodiments, a cavity may be provided inside the heat conducting member. In some embodiments of the present application, the heat conducting member 40 is a heat conducting plate. The first surface 2111 is thermally connected to the heat conducting member 40, and the first surface 2111 intersects with a horizontal plane, and therefore the heat conducting member 40 also intersects with the horizontal plane. In some embodiments of the present application, the heat conducting member 40 is provided along a vertical direction and extends in a first direction.

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

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

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

[0089] The thermal conduction member 40 is installed along the first direction, and the thermal conduction member 40 can exchange heat with any of the battery cells 21 in the battery assembly 20. At the same time, when the power consumption device 1 collides along the side direction, the impact force does not act directly on the end of the thermal conduction member 40, thereby avoiding damage to the thermal conduction member 40. At the same time, the battery cell 21 is thermally connected to the thermal conduction member 40 via the first surface 2111, and the contact area between the thermal conduction member 40 and the battery cell 21 can be maximized, thereby ensuring the heat exchange effect of the thermal conduction member 40 with the battery cell 21.

[0090] Fig. 18 is a structural schematic diagram of the second part 32 according to an embodiment of the present application, Fig. 19 is an assembled structural schematic diagram of the second part 32 and the battery assembly 20 according to an embodiment of the present application, and Fig. 20 is an enlarged structural schematic diagram of part A according to an embodiment of the present application. As shown in Figs. 4, 8, 18, 19 and 20, in some embodiments of the present application, the battery 10 includes at least two battery assemblies 20, and both sides of the thermally conductive member 40 are thermally conductively connected to two battery assemblies 20 respectively along a third direction, and the third direction crosses both the first direction and the first surface 2111.

[0091] Specifically, the heat conducting member 40 is provided between the two battery assemblies 20 and is thermally conductively connected to the two battery assemblies 20, respectively. Here, the third direction is the width direction of the battery 10 or a lateral direction of the traveling direction of the power consuming device 1. Both sides of the heat conducting member 40 are thermally conductively connected to the first surfaces 2111 of the battery cells 21, respectively, thereby improving the heat exchange effect of the heat conducting member 40 with the battery cells 21.

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

[0093] As shown in FIGS. 1 and 19, 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.

[0094] Specifically, in some embodiments of the present application, the longitudinal direction of the battery 10 may be installed parallel to the running direction of the power consuming device 1, so that when the thermal conductive member 40 is installed along the longitudinal direction of the battery 10, both ends of the thermal conductive 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, so that when the power consuming device 1 collides along the lateral direction, the impact force does not act directly on the ends of the thermal conductive member 40, thereby preventing damage to the thermal conductive member 40 and ensuring the safety and reliability of the use of the battery 10.

[0095] In some embodiments of the present application, the battery 10 may be installed at a corner between the longitudinal direction of the battery 10 and the running direction of the power consuming device 1, and the power consuming device 1 can be similarly powered via the battery 10, thereby facilitating the installation of the battery 10 position.

[0096] As shown in FIGS. 17-20, in some embodiments of the present application, heat exchange medium passages are provided within the heat transfer member 40.

[0097] The heat exchange medium passage is used for circulating a heat exchange medium, whereby the flow of the heat exchange medium removes heat released from the battery cells 21 or heats the battery cells 21, and further improves 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 adopted.

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

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

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

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

[0102] Specifically, the first direction is the longitudinal direction of the battery 10, and the third direction is the width direction of the battery 10. A plurality of thermally conductive members 40 are arranged along the third direction and are thermally conductively connected to the first surfaces 2111 of the battery cells 21 via the plurality of thermally conductive members 40, respectively, and are used to dissipate heat from the battery 10, thereby effectively improving the heat exchange speed for the battery 10.

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

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

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

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

[0107] By simultaneously connecting both sides of the battery assembly 20 to the heat conductive member 40, heat is dissipated simultaneously through both sides of the battery assembly 20, and the heat exchange speed for the battery 10 is effectively improved.

[0108] As shown in Figures 4, 8, 19, 20, 21 and 22, in some embodiments of the present application, along the third 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 thermally conductive member 40 respectively.

[0109] As shown in Figures 12, 13, 19, 20, 21 and 22, in some embodiments of the present application, along the third 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 thermally conductive member 40 respectively.

[0110] When the battery cell 21 has two first surfaces 2111 with the largest areas, the two first surfaces 2111 dissipate heat simultaneously, thereby effectively improving the heat exchange rate for the battery 10 .

[0111] As shown in Figures 4, 5, 8, 21 and 22, in some embodiments of the present application, the battery cell 21 includes an electrode assembly 213, the electrode assembly 213 includes a 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, and along a third direction, the projections of the thermal conduction member 40 and the main body portion 2131 at least partially overlap, and the third direction intersects both the first direction and the first surface 2111.

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

[0113] As shown in Figures 10, 11, 21 and 22, in some embodiments of the present application, the battery cell 21 includes an electrode assembly 213, the electrode assembly 213 includes a 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, and along a third direction, the projections of the thermal conduction member 40 and the main body portion 2131 at least partially overlap, and the third direction intersects both the first direction and the first surface 2111.

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

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

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

[0117] As shown in Figures 15, 16, 21 and 22, in some embodiments of the present application, the battery cell 21 includes an electrode assembly 213, the electrode assembly 213 includes a 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, and along a third direction, the projections of the thermal conduction member 40 and the main body portion 2131 at least partially overlap, and the third direction intersects both the first direction and the first surface 2111.

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

[0119] By arranging the thermal conduction member 40 and the main body portion 2131 so as to at least partially overlap along the second direction, the thermal conduction member 40 can effectively exchange heat with the main body portion 2131, thereby ensuring the heat exchange effect for the battery 10.

[0120] As shown in Figures 4, 5, 8, 21 and 22, in some embodiments of the present application, along the second direction, the size of the main body portion 2131 is L1, the size of the thermal 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.

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

[0122] As shown in Figures 10, 11, 21 and 22, in some embodiments of the present application, along the second direction, the size of the main body portion 2131 is L1, the size of the thermal 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.

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

[0124] As shown in Figures 12, 13, 21 and 22, in some embodiments of the present application, along the second direction, the size of the main body portion 2131 is L1, the size of the thermal 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.

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

[0126] As shown in Figures 15, 16, 21 and 22, in some embodiments of the present application, along the second direction, the size of the main body portion 2131 is L1, the size of the thermal 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.

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

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

[0129] It should be understood that if L2 / L1 is smaller than 0.5, the size of the thermally conductive member 40 will be too small to effectively exchange heat with the battery cells 21, and if L2 / L1 is greater than 1.5, the size of the thermally conductive member 40 will be relatively large and will tend to occupy space in the battery 10, which is detrimental to improving the space utilization rate of the battery 10.

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

[0131] As shown in FIGS. 4, 5, 8, 21 and 22, in some embodiments of the present application, along the second direction, the size of the overlapping area is L3, where 0.5≦L3 / L1≦1.

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

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

[0134] 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 appropriately set, and the heat exchange effect of the heat conduction member 40 in the main body portion 2131 can be significantly enhanced.

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

[0136] Specifically, since the multiple thermal conductive 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 facilitate fluid communication with the multiple thermal conductive members 40 through the current collecting member 50, the current collecting member 50 is provided at one end of the longitudinal direction of the battery 10 or at an end in the running direction of the power consuming device 1, and the current collecting member 50 is installed at one end or both ends according to actual needs.

[0137] 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 along the side, the impact force does not act directly on the current collecting member 50 at the end in the traveling 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.

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

[0139] Specifically, in some embodiments of the present application, the second 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.

[0140] The two current collecting members 50 are arranged together at one end in the first direction and along the second direction, so that the current collecting members 50 can effectively reduce the space occupied by the current collecting members 50 along the first direction within the battery 10, thereby facilitating the installation of other structures within the battery 10 and improving the energy density of the battery; the two current collecting members are arranged together at one end in the first direction and further reduce the probability of the current collecting members being damaged in the event of a collision facing the first direction.

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

[0142] 3 and 4, 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 second direction. Here, the second direction may be a vertical direction. In some embodiments of the present application, the two electrode terminals 214 may be provided on the two second surfaces 2121, respectively.

[0143] 3 and 8, 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 second direction. Here, the second direction may be a vertical direction. In some embodiments of the present application, the two electrode terminals 214 may be provided on the two second surfaces 2121, respectively.

[0144] 3 and 9 , 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 a first direction. Here, the first direction is the longitudinal direction of the battery 10 or the running direction of the power consuming device 1. In some embodiments of the present application, the two electrode terminals 214 may be provided on the two second surfaces 2121, respectively.

[0145] 10 and 11, the battery cell 21 includes two electrode terminals 214, and the two electrode terminals 214 are provided on two second surfaces 2121 respectively along a second direction, where one electrode terminal 214 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 second direction is the vertical direction.

[0146] 12 and 13 , the battery cell 21 includes two electrode terminals 214, and the two electrode terminals 214 are provided on two second surfaces 2121, respectively, along a first direction. Here, the first direction is the longitudinal direction of the battery 10 or the running direction of the power consuming device 1. Alternatively, the two electrode terminals 214 may be provided together on one second surface 2121.

[0147] 13 and 14 , the battery cell 21 includes two electrode terminals 214, and the two electrode terminals 214 are provided on two second surfaces 2121, respectively, along a first direction. Here, the first direction is the longitudinal direction of the battery 10 or the running direction of the power consuming device 1. Alternatively, the two electrode terminals 214 may be provided together on one second surface 2121.

[0148] By providing two electrode terminals 214 of opposite polarity on the same second surface 2121 of the battery cell 21 as necessary, or on two second surfaces 2121 respectively, the electrode terminals 214 avoid the first surface 2111 that exchanges heat with the thermal conduction member 40, and facilitate subsequent electrical connection with another adjacent battery cell 21.

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

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

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

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

[0153] The pressure relief mechanism 215 communicates with the inside of the battery cell 21 and is used to release the internal pressure of the battery cell 21 when the internal pressure of the battery cell 21 rises. The pressure relief mechanism 215 may be provided on the same second surface 2121 as the electrode terminal 214 as necessary, or may be provided on each of the two second surfaces 2121, so that the pressure relief mechanism 215 avoids the first surface 2111 that exchanges heat with the thermal conductive member 40, and when thermal runaway occurs in the battery cell 21, the pressure relief mechanism 215 smoothly releases air.

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

[0155] Specifically, the battery cell 21 includes two electrode terminals 214, and the two electrode terminals 214 are both provided on a first surface 2111. Here, the longitudinal direction of the battery cell 21 is arranged along a first direction, which is the longitudinal direction of the battery 10 or the traveling direction of the power consuming device 1.

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

[0157] As shown in Figures 15 and 16, in some embodiments of the present application, the battery cell 21 includes a first surface 2111 and a fourth surface arranged opposite the first surface 2111, the first surface 2111 and the fourth surface are arranged opposite each other along a third direction, the third direction intersects both the first direction and the first surface 2111, a recess is provided on an edge of the fourth surface, the first surface 2111 is used for installing an electrode terminal 214, the electrode terminal 214 protrudes from the first surface 2111 in the third direction and corresponds to the recess.

[0158] Specifically, as shown in Figures 1, 15 and 16, the longitudinal direction of the battery cell 21 is arranged along a first direction, and the battery cell 21 includes a first surface 2111 and a fourth surface arranged opposite each other along a third direction, a recess is provided on the edge of the fourth surface, and the first surface 2111 is used for installing the electrode terminal 214.

[0159] The electrode terminal 214 is provided on the first surface 2111, and a recess corresponding to the electrode terminal 214 is provided on the edge of the fourth surface, so that the electrode terminal 214 of the adjacent battery cell 21 can be accommodated through the recess, leaving an operational space for electrical connection, making the overall structure of the battery 10 more compact and achieving high space utilization. As shown in Figures 4, 5 and 8, 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 third direction, or the electrode assembly 213 has a stacked structure, and the first plate, the separator and the second plate of the electrode assembly 213 are stacked along a third direction, which crosses both the first direction and the first surface.

[0160] By arranging the electrode assembly 213 in a stacked structure or a wound structure, the electrode assembly 213 can effectively supply power to the power consuming device 1 .

[0161] As shown in FIGS. 3, 4 and 7, 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 arranged along a first direction.

[0162] As shown in FIGS. 4, 7 and 8, 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 arranged along a first direction.

[0163] 4, 7 and 9, 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 arranged along a first direction. It should be noted that only one battery cell 21 is illustrated along the first direction in FIG.

[0164] As shown in FIGS. 7, 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 arranged along a first direction.

[0165] 7, 12, and 13, 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 arranged along a first direction. It should be noted that only one battery cell 21 is illustrated along the first direction in FIG.

[0166] 7, 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 arranged along a first direction. It should be noted that only one battery cell 21 is illustrated along the first direction in FIG.

[0167] 7, 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 arranged along a first direction. It should be noted that only one battery cell 21 is illustrated along the first direction in FIG.

[0168] As shown in FIGS. 7, 16 and 17, 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 arranged along a first direction.

[0169] When at least two battery cells 21 are arranged along a first direction and heat exchange is required for the battery cells 21, the heat conduction member 40 can be installed along the first direction to facilitate heat dissipation for each of the at least two battery cells 21 in the battery assembly 20, thereby improving the heat exchange speed of the heat conduction member 40.

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

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

[0172] If the size ratio L / H is greater than 6, the size of the battery cell 21 in the first direction becomes too large, which makes it difficult to install and at the same time reduces the support strength of the battery cell 21. If the size ratio L / H is less than 0.5, the size of the battery cell 21 in the second direction becomes too large, which makes it difficult to install and at the same time reduces the support strength of the battery cell 21.

[0173] It should be noted that the value of L / H can be 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4...5, 5.5...6. By setting different values ​​of L / H, the battery cells 21 can have different shapes and further meet the demands of different types of batteries 10.

[0174] The maximum size H of the battery cell 21 includes both the size of the case 211 and the size of the electrode terminal 214 protruding from the case 211. The battery cell 21 is installed according to the above size ratio, which ensures the support strength of the battery cell 21 and maximizes the amount of power of the battery cell 21 while at the same time making it easy to install the battery cell 21.

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

[0176] If the size ratio of L / D is greater than 30, the size of the battery cell 21 in the first direction becomes too large, which makes it difficult to install and reduces the supporting strength of the battery cell 21. If the size ratio of L / D is less than 1, the size of the battery cell 21 in the first direction becomes too small, which reduces the amount of power of the battery cell 21.

[0177] It should be noted that the value of L / D can be 1, 2, 3, 4, 5, 6, 7, 8...10...15...20...25...28...30. By setting the L / D to different values, the battery cells 21 can have different shapes and further meet the demands of different types of batteries 10.

[0178] Here, when the battery cell 21 is as shown in Fig. 4 or 16, the L / D has a maximum size ratio of 30, and when the battery cell 21 is as shown in Fig. 11, the L / D has a minimum size ratio of 1. The battery cell 21 is installed according to the above size ratio, and the power amount of the battery cell 21 can be maximized while ensuring the supporting strength of the battery cell 21.

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

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

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

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

[0183] By placing the baffle 321 and the electrode terminal 214 at an interval of 1.2 mm to 25 mm, if an impact occurs to the battery 10 in the second direction, the baffle 321 and the electrode terminal 214 can be prevented from receiving the impact, which would cause damage to the electrode terminal 214.

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

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

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

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

[0188] The baffle 321 may be disposed below the electrode terminal 214 along the third direction, or above the electrode terminal 214 along the third direction, so as to achieve a reasonable arrangement according to the actual mounting position.

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

[0190] Specifically, the support plate 311 may be a part of the housing 30 itself, or the support plate 311 is 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.

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

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

[0193] The battery cells 21 are fixed inside the housing 30 via the support plate 311, making it easy to attach and fix the battery cells 21.

[0194] As shown in Figures 4, 8, 21 and 22, 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 conduction coefficient of the first adhesive layer 61 is less than or equal to the thermal conduction coefficient of the second adhesive layer 62.

[0195] 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 .

[0196] 10, 11, 21 and 22, in some embodiments of the present application, the second surface 2121 on which the electrode terminal 214 is not protruding is fixedly connected to the support plate 311 via a first adhesive layer 61, and the heat 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 may each be selected as a heat conductive polyurethane adhesive layer, and different amounts of heat conductive particles are added thereto, thereby achieving different heat conductivity coefficients.

[0197] The first adhesive layer 61 is used to connect the second surface 2121 and the support plate 311, and the second adhesive layer 62 is used to thermally connect the first surface 2111 and the thermal conduction member 40. Therefore, the thermal conduction coefficient of the first adhesive layer 61 is set to be equal to or lower than the thermal conduction coefficient of the second adhesive layer 62, thereby ensuring that the thermal conduction member 40 can dissipate heat from the battery cells 21 more effectively.

[0198] As shown in FIGS. 21 and 22, 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 is in the range of 0.1-1.

[0199] Specifically, any of the above ratio ranges allows the heat transfer of the battery cells 21 by the heat conductive member 40 to be effective.

[0200] It should be understood that, when 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 smaller than 0.1, the thermal conductivity ability of the first adhesive layer 61 is relatively low, and the support plate 311 connected to the first adhesive layer 61 cannot conduct heat transfer through one side of the first adhesive layer 61, and therefore cannot exchange heat with the support plate 311. When 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 larger than 1, the thermal conductivity ability of the first adhesive layer 61 is stronger than that of the second adhesive layer 62, and the ability of the battery cell 21 to dissipate heat through the thermal conductive member 40 is weakened, and the heat dissipation effect of the battery cell 21 is deteriorated.

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

[0202] As shown in Figures 1 to 24, a second aspect of the present application provides an electric power consumption device 1 including any one of the batteries 10 described above, the battery 10 being used to provide electric energy to drive the electric power consumption device 1 to make it run.

[0203] 25 is a schematic diagram of a distribution structure of the battery 10 in the power consuming device 1 according to an embodiment of the present application. As shown in FIGS. 1 to 25, in some embodiments of the present application, when the longitudinal direction of the battery 10 is different from the running direction of the power consuming device 1, the first direction is the running direction of the power consuming device 1.

[0204] In some embodiments, the lengthwise direction of the battery 10 may be perpendicular to the travel direction of the power consuming device 1, for example, one or more batteries 10 may be arranged in the travel direction of the power consuming device 1, and when multiple batteries 10 are arranged, the lengthwise direction of at least one battery 10 is perpendicular to the travel direction of the power consuming device 1. In such embodiments, the first direction is the travel direction of the power consuming device 1, i.e., in a battery 10 whose lengthwise direction is perpendicular to the travel direction 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 travel direction of the power consuming device 1.

[0205] The power consumption device 1 of the present application may be a mobile phone, a mobile device, a laptop computer, a battery-powered vehicle, an electric toy, an electric tool, an electric vehicle, a ship, a spacecraft, etc., for example, the spacecraft may be an airplane, a rocket, a spacecraft, a spaceship, etc.

[0206] When the first direction is set to the traveling direction of the power consuming device 1 and the electrode terminal 214 is provided on the second surface 2121, the two second surfaces 2121 are arranged opposite to each other along the second direction, and the second direction intersects with the first direction, that is, the electrode terminal 214 is not provided at an end of the traveling direction of the power consuming device 1, so that when an impact occurs to the power consuming device 1 along the traveling direction, the electrode terminal 214 will not be impacted, thereby avoiding damage to the electrode terminal 214 and ensuring normal power supply of the battery 10; when the electrode terminal 214 is provided on the first surface 2111, the first surface 2111 has the largest area, so that the occupancy rate of the electrode terminal 214 on the first surface 2111 is small, so that when an impact occurs to the power consuming device 1, the electrode terminal 214 will not be impacted, thereby avoiding damage to the electrode terminal 214 and ensuring normal power supply of the battery 10.

[0207] The above description is only an outline of the technical solution of the present application, which can be implemented in accordance with the contents of the specification in order to more clearly understand the technical means of the present application, and in order to make the above and other objectives, features and advantages of the present application more obvious and understandable, the following particularly cites specific embodiments of the present application for description.

[0208] As shown in Figs. 1, 4, 5, 7, 8, 19 to 24, in one embodiment of the present application, the power consumption device 1 includes a battery 10, and the battery 10 is used to provide electric energy to drive the power consumption device 1. The battery 10 includes a housing 30 and a plurality of battery assemblies 20 provided in the housing 30, and the housing 30 includes a first portion 31 and a second portion 32, and the first portion 31 and the second portion 32 enclose a space for accommodating the battery assemblies 20. The plurality of battery assemblies 20 are respectively installed along a first direction and arranged along a third direction. The battery assembly 20 includes a plurality of battery cells 21, and the longitudinal direction of the battery cells 21 is installed along a first direction, the height direction of the battery cells 21 is installed along a second direction, and the width direction of the battery cells 21 is installed along a third direction. The battery cell 21 includes two third surfaces 2112 arranged opposite to each other along the first direction, two second surfaces 2121 arranged opposite to each other along the second direction, and two first surfaces 2111 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 the vertical direction, and the third direction is lateral to the traveling direction of the power consuming device 1.

[0209] The battery cell 21 includes an electrode assembly 213, the electrode assembly 213 includes a body portion 2131 and a tab 2132 protruding from the body portion 2131, the tab 2132 is electrically connected to the electrode terminal 214, and along a third direction, the projections of the heat conductive member 40 and the body portion 2131 at least partially overlap and have an overlapping area. Along a second direction, the size of the body portion 2131 is L1, the size of the heat conductive 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.

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

[0211] A plurality of heat conducting members 40 are further provided in the housing 30, the heat conducting members 40 are arranged along a first direction, and the plurality of heat conducting members 40 are arranged along a third direction. A heat conducting member 40 is provided on each side of the battery assembly 20 along the third direction, and the first surfaces 2111 on both sides along the third direction are thermally conductively connected to the heat conducting members 40, respectively. A heat exchange medium passage is provided in the heat conducting member 40. The battery 10 further includes a current collecting member 50 extending along the third direction, and is in fluid communication with the plurality of heat conducting members 40. The number of current collecting members 50 is two, and the two current collecting members 50 are both provided at one end of the traveling direction of the power consuming device 1, and are spaced apart along the second direction.

[0212] A support plate 311 is further provided within the housing 30, and the support plate 311 is provided in the first portion 31, and the battery cells 21 are fixedly connected to the support plate 311 via a second surface 2121 on which no electrode terminals 214 are provided. The second surface 2121 on which no electrode terminals 214 are provided is fixedly connected to the support plate 311 via a first adhesive layer 61, and the heat conductive member 40 is thermally conductively connected to the first surface 2111 via a second adhesive layer 62, and the range of the ratio between the thermal conductivity coefficient of the first adhesive layer 61 and the thermal conductivity coefficient of the second adhesive layer 62 is 0.1 to 1.

[0213] Finally, it should be explained that the above embodiments are only for explaining the technical solution of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that it can still make modifications to the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features thereof, and these modifications or replacements do not deviate the essence of the corresponding technical solution from the scope of the technical solution of the embodiments of the present application, and all should be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, all of the technical features mentioned in each embodiment can be combined in any manner. The present application is not limited to the specific embodiments disclosed in this specification, and includes all technical solutions included within the scope of the claims. [Explanation of symbols]

[0214] The reference numerals in the specific embodiments are as follows: 1: Vehicle, 10: battery, 11: controller, 12: motor, 20: battery assembly, 21: battery cell, 211: case, 2111: first surface, 2112: third surface, 212: end 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: baffle, 40: heat conductive member, 50: current collecting member, 61: first adhesive layer; 62: second adhesive layer.

Claims

1. A battery including a battery assembly (20), The battery assembly (20) includes at least one battery cell (21), and the battery assembly (20) is installed along a first direction, the first direction being a longitudinal direction of the battery (10) or a traveling direction of a power consumption device (1) having the battery (10); A battery characterized in that the battery cell (21) includes a plurality of surfaces, the plurality of surfaces including a first surface (2111) having the largest area, the plurality of surfaces further including two second surfaces (2121) arranged opposite each other, the two second surfaces being each connected to the first surface, the battery cell (21) further including an electrode terminal, the electrode terminal being provided on the first surface or at least one of the second surfaces (2121).

2. The battery of claim 1, characterized in that the two second surfaces (2121) are arranged opposite each other along a second direction, the second direction intersecting the first direction.

3. The battery of claim 1, wherein the two second surfaces (2121) are disposed opposite each other along the first direction.

4. The battery of claim 1 , wherein the first surface (2111) intersects a horizontal plane.

5. The battery of claim 2 , wherein the second direction intersects or is parallel to a horizontal plane.

6. The battery of any one of claims 1 to 5, further comprising a thermally conductive member (40), the thermally conductive member (40) being arranged along the first direction, and each of the battery cells (21) of the battery assembly (20) being thermally conductively connected to the thermally conductive member (40) via at least the first surface (2111).

7. The battery of claim 6, comprising at least two battery assemblies (20), and along a third direction, both sides of the thermally conductive member (40) are thermally conductively connected to two of the battery assemblies (20), respectively, and the third direction intersects both the first direction and the first surface (2111).

8. 7. The battery according to claim 6, characterized in that the longitudinal direction of the battery (10) is parallel to or intersects with the direction of travel of the power consumer (1).

9. 7. The battery of claim 6, wherein the heat transfer member (40) includes a heat exchange medium passageway.

10. The battery (10) of claim 9, characterized in that the battery (10) includes a plurality of the thermally conductive members (40), the plurality of the thermally conductive members (40) being arranged along a third direction, the third direction intersecting both the first direction and the first surface (2111).

11. The battery of claim 10, wherein the heat conductive members (40) are provided on both sides of the battery assembly (20) along the third direction, and the battery assembly (20) is thermally connected to the heat conductive members (40) on both sides.

12. The battery of claim 10, characterized in that along the third direction, the battery cell (21) includes two opposing first surfaces (2111), and each of the two first surfaces (2111) of the battery cell (21) is thermally conductively connected to one of the thermal conductive members (40).

13. The battery of claim 6, characterized in that 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), and along a third direction, the projections of the thermal conduction member (40) and the main body portion (2131) at least partially overlap and have an overlapping area, and the third direction intersects both the first direction and the first surface (2111).

14. The battery of claim 13, characterized in that along a second direction, the size of the main body portion (2131) is L1 and the size of the thermal 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.

15. 15. The battery of claim 14, wherein along the second direction, a size of the overlapping area is L3, where 0.5≦L3 / L1≦1.

16. The battery (10) further includes a current collecting member (50), the current collecting member (50) being in fluid communication with a plurality of the thermally conductive members (40); The battery according to any one of claims 6 to 15, 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.

17. The battery of claim 16, characterized in that there are two current collecting members (50), 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 a second direction, and the second direction intersects both the first direction and the horizontal plane.

18. The battery according to any one of claims 1 to 5, characterized in that the electrode terminal (214) includes two electrode terminals (214) of opposite polarity, the two electrode terminals (214) being provided on one of the second surfaces (2121), or the two electrode terminals (214) being provided on two of the second surfaces (2121), respectively.

19. The battery of claim 18, characterized in that the battery cell (21) further includes a pressure relief mechanism (215), and the pressure relief mechanism (215) and at least one of the electrode terminals (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 of the second surfaces (2121).

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

21. 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 are arranged opposite to each other along a third direction, the third direction intersects both the first direction and the first surface (2111), a recess is provided on the edge of the fourth surface, the first surface (2111) is used for installing the electrode terminal (214), the electrode terminal (214) protrudes from the first surface (2111) in the third direction and corresponds to the recess. The battery of claim 20,

22. The battery cell (21) includes an electrode assembly (213), the electrode assembly (213) has a wound structure and is flat, and an outer surface of the electrode assembly (213) includes two flat surfaces, the two flat surfaces facing each other along a third direction; Or, the electrode assembly (213) has a stacked structure, and the first plate, the separator and the second plate of the electrode assembly (213) are stacked along a third direction; The battery of any one of claims 1 to 5, wherein the third direction intersects both the first direction and the first surface (2111).

23. The battery of any one of claims 1 to 5, wherein the battery assembly (20) includes at least two battery cells (21), the at least two battery cells (21) being arranged along the first direction.

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

25. 25. The battery of claim 24, wherein along a third direction, the maximum size of the battery cells (21) is D, where the L / D range value is 1 to 30, and the first direction, the second direction and the third direction intersect two by two.

26. The battery (10) further includes a baffle (321), the baffle (321) is disposed opposite the second surface (2121) on which the electrode terminal (214) of the battery cell (21) is provided along a second direction, the distance between the electrode terminal (214) and the baffle (321) is 1.2 mm to 25 mm, and the second direction intersects both the first direction and the horizontal plane.

27. 27. The battery of claim 26, wherein at least one of the electrode terminals (214) is located below the battery cell (21) and the baffle (321) is located below the electrode terminal (214), or at least one of the electrode terminals (214) is located above the battery cell (21) and the baffle (321) is located above the electrode terminal (214).

28. The battery of claim 2, characterized in that the electrode terminal (214) is provided on one of the second surfaces (2121), the battery (10) further includes a support plate (311), the battery cell (21) is fixedly connected to the support plate (311) via another second surface (2121) on which the electrode terminal (214) is not provided, and the second direction intersects both the first direction and the horizontal plane.

29. The battery of claim 28, characterized in that the other second surface (2121) is fixedly connected to a support plate (311) via a first adhesive layer (61), the thermal conduction member (40) is thermally conductively connected to the first surface (2111) via a second adhesive layer (62), and the thermal conduction coefficient of the first adhesive layer (61) is less than or equal to the thermal conduction coefficient of the second adhesive layer (62).

30. 30. The battery of claim 29, 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.

31. 31. An electric power consuming device comprising a battery (10) according to any one of claims 1 to 30, the battery (10) being used to provide electrical energy to drive and run the electric power consuming device (1).

32. The power consuming device according to claim 31, characterized in that, when the longitudinal direction of the battery (10) and the running direction of the power consuming device (1) are different, the first direction is the running direction of the power consuming device (1).

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