Battery and electric equipment

Abstract

The utility model relates to the technical field of batteries, in particular to a battery and electric equipment. The battery comprises a battery assembly, the battery assembly comprises at least one battery monomer, the battery assembly is arranged along a first direction, and the first direction is the length direction of the battery or the walking direction of electric equipment with the battery; the battery cell comprises a plurality of surfaces, and the plurality of surfaces comprise a first surface with the largest area; the plurality of surfaces further comprise two second surfaces which are oppositely arranged, and the two second surfaces are respectively connected with the first surface; the battery monomer further comprises an electrode terminal, the electrode terminal is arranged on the first surface or at least one second surface, and the battery further comprises a heat conduction piece which is arranged along the first direction; and each battery monomer of the battery assembly is in heat-conducting connection with the heat-conducting piece at least through the first surface. According to the battery provided by the invention, when electric equipment is collided, the electric equipment is not easy to collide with the electrode terminals, so that the condition that the electrode terminals are damaged is reduced, and the battery can supply power normally.

Description

[0001] This application is a divisional application of the utility model patent application with the application date of July 24, 2023, application number 202321963067.6, and name “Batteries and Electrical Equipment”. Technical Field

[0002] The present application relates to the field of battery technology, and in particular to a battery and an electrical device. Background Art

[0003] In recent years, with the development of the economy, battery technology has been widely used in various fields, especially in the field of new energy vehicles. At present, new energy vehicles have caused a huge impact on traditional fuel vehicles. As the core component of new energy vehicles, batteries play a vital role in the development of new energy vehicles.

[0004] The battery includes multiple battery cells, each of which is provided with electrode terminals, through which the battery cells are powered. However, due to the location of the electrode terminals, when a vehicle collides, the electrode terminals are easily hit, thus causing damage to the electrode terminals and affecting the safety of the battery cells. Utility Model Content

[0005] In view of the defects of the prior art, the purpose of the present application is to provide a battery and an electrical device that can effectively solve the problem of electrode terminal damage caused by a vehicle collision.

[0006] The first aspect of the present application discloses a battery, comprising:

[0007] A battery assembly, the battery assembly includes at least one battery cell, and the battery assembly is arranged along a first direction, the first direction being the length direction of the battery or the running direction of an electric device having the battery;

[0008] The battery cell includes multiple surfaces, the multiple surfaces include a first surface with the largest area; the multiple surfaces also include two second surfaces arranged opposite to each other, and the two second surfaces are respectively connected to the first surface; the battery cell also includes electrode terminals, and the electrode terminals are arranged on the first surface or at least one second surface. The battery also includes a heat conductor, and the heat conductor is arranged along a first direction; each battery cell of the battery assembly is thermally connected to the heat conductor at least through the first surface, wherein the two second surfaces are arranged opposite to each other along a second direction; the second direction intersects with the first direction.

[0009] According to the battery of the present application, when the electrode terminal is arranged on the second surface, the electrode terminal can be arranged in the vertical direction, so that when the electric device collides in the lateral direction of the walking direction, the electrode terminal will not be hit, thereby reducing the damage to the electrode terminal, so that the battery can supply power normally. When the electrode terminal is arranged on the first surface, since the first surface is the surface with the largest area, the electrode terminal occupies a small proportion on the first surface, and when the electric device collides, it is not easy to hit the electrode terminal, thereby reducing the damage to the electrode terminal, so that the battery can supply power normally. The heat conductor is arranged in the first direction, and any battery cell in the battery assembly can be heat exchanged through the heat conductor. At the same time, when the electric device collides in the lateral direction, the impact force will not directly act on the end of the heat conductor, thereby reducing the damage to the heat conductor. At the same time, the battery cell is thermally connected to the heat conductor through the first surface, which can maximize the contact area between the heat conductor and the battery cell, thereby improving the heat exchange effect of the heat conductor on the battery cell.

[0010] In some embodiments of the present application, the first surface intersects with the horizontal plane. The first surface is the surface with the largest area of ​​the battery cell. Intersecting the first surface with the horizontal plane can maximize the number of battery cells arranged in the horizontal plane, thereby improving the overall energy density of the battery.

[0011] In some embodiments of the present application, the second direction intersects or is parallel to the horizontal plane. That is, the second direction may be substantially vertical or along the horizontal direction. The corresponding second surface may be arranged substantially along the horizontal direction or along the vertical direction.

[0012] In some embodiments of the present application, at least two battery assemblies are included; along the third direction, the two sides of the heat conductive member are respectively connected to the two battery assemblies by heat conduction; the third direction intersects both the first direction and the first surface. That is, the two sides of the heat conductive member are respectively connected to the first surface of the battery cell by heat conduction, thereby improving the heat exchange effect of the heat conductive member on the battery cell.

[0013] In some embodiments of the present application, the length direction of the battery is parallel to or intersects with the travel direction of the electrical device. The battery in the present application can be arranged in the device along any direction to facilitate the arrangement of the battery.

[0014] In some embodiments of the present application, a heat exchange medium channel is provided in the heat conducting member, and the heat exchange medium channel is used to circulate the heat exchange medium, so that the heat emitted by the battery cell is taken away by the flow of the heat exchange medium, or the battery cell is heated, thereby improving the heat exchange efficiency of the battery cell.

[0015] In some embodiments of the present application, the battery includes a plurality of heat conductive members, and the plurality of heat conductive members are arranged along a third direction, and the third direction intersects both the first direction and the first surface. The plurality of heat conductive members are arranged along the third direction and are used together to dissipate heat from the battery, thereby effectively improving the heat exchange speed of the battery.

[0016] In some embodiments of the present application, along the third direction, heat conducting members are provided on both sides of the battery assembly respectively; the battery assembly is thermally connected to the heat conducting members on both sides. Both sides of the battery assembly are thermally connected to the heat conducting members at the same time, and heat is dissipated simultaneously through both sides of the battery assembly, effectively improving the heat exchange speed of the battery.

[0017] In some embodiments of the present application, along the third direction, the battery cell includes two opposite first surfaces, and the two first surfaces of the battery cell are respectively connected to a heat conductive member. When the battery cell has two first surfaces with the largest areas, the heat exchange rate of the battery is effectively improved by dissipating heat from the two first surfaces at the same time.

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

[0019] In some embodiments of the present application, along the second direction, the size of the main body is L1, and the size of the heat conductor is L2, wherein 0.5≤L2 / L1≤1.5, and the first direction, the second direction, and the third direction intersect each other. The L2 / L1 range is set to be greater than 0.5 and less than 1.5, so that the heat conductor has a sufficient heat conduction area, thereby performing heat exchange with the main body, greatly enhancing the heat exchange effect of the heat conductor on the main body.

[0020] In some embodiments of the present application, along the second direction, the size of the overlap area is L3, 0.5≤L3 / L1≤1. By setting the size of the overlap area in the second direction, the heat exchange area between the heat conductor and the main body can be reasonably set, which can greatly enhance the heat exchange effect of the heat conductor on the main body.

[0021] In some embodiments of the present application, the battery further comprises a current collector, the current collector being in fluid communication with the plurality of heat conducting members;

[0022] The heat conducting member is provided with a current collecting member at one end in the first direction, or the heat conducting member is provided with current collecting members at both ends in the first direction. The current collecting member is used to supply or recover the heat exchange medium in the heat exchange medium channel, so as to be used for heat exchange batteries. The current collecting member is provided at the end of the heat conducting member in the first direction. When the electric equipment collides in the lateral direction, the impact force will not directly act on the end of the heat conducting member, thereby reducing the damage to the heat conducting member and improving the safety and reliability of the battery.

[0023] In some embodiments of the present application, there are two current collectors, and the two current collectors are arranged at one end of the heat conductive member in the first direction, and the two current collectors are arranged along the second direction, and the second direction intersects both the first direction and the horizontal plane. The two current collectors are arranged together at one end of the first direction and arranged along the second direction, which can effectively reduce the space occupied by the current collectors in the battery along the first direction, thereby facilitating the arrangement of other structures in the battery and improving the energy density of the battery; the two current collectors are arranged together at one end of the first direction, which can also reduce the probability of damage to the current collectors when facing a collision in the first direction.

[0024] In some embodiments of the present application, the electrode terminal includes two electrode terminals with opposite polarities; the two electrode terminals are arranged on one second surface, or the two electrode terminals are arranged on two second surfaces respectively. The two electrode terminals with opposite polarities can be arranged on the same second surface of the battery cell as required, or are arranged on two second surfaces respectively, so that the electrode terminals avoid the first surface that exchanges heat with the heat conductive member, which is convenient for subsequent electrical connection with other adjacent battery cells.

[0025] In some embodiments of the present application, the battery cell further includes a pressure relief mechanism; the pressure relief mechanism and at least one electrode terminal are disposed on the same second surface, or the pressure relief mechanism and the electrode terminal are disposed on two second surfaces respectively. The pressure relief mechanism is connected to the interior of the battery cell and is used to discharge the internal pressure of the battery cell when the internal pressure of the battery cell increases. The pressure relief mechanism can be disposed on the same second surface as the electrode terminal, or on two second surfaces respectively, as required, so that the pressure relief mechanism avoids the first surface that exchanges heat with the heat conductive member, so that the pressure relief mechanism can be discharged smoothly in the event of thermal runaway of the battery cell.

[0026] In some embodiments of the present application, the electrode terminal is disposed on the first surface. The electrode terminal is disposed on the first surface, and the power supply is supplied to the electrical device through the electrode terminal on the first surface. The electrode terminal is disposed on the first surface, which can save the space occupied by the electrode terminal in the second direction of the battery, thereby improving the energy density of the battery.

[0027] In some embodiments of the present application, a 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 disposed at the edge of the fourth surface; the first surface is used to dispose an electrode terminal; the electrode terminal is disposed protrudingly on the first surface in the third direction and corresponds to the recess. The electrode terminal is disposed on the first surface, and a recess corresponding to the electrode terminal is disposed at the edge of the fourth surface, so that the electrode terminal of the adjacent battery cell is accommodated by the recess, leaving an operating space for electrical connection, so that the overall structure of the battery is more compact and the space utilization rate is high.

[0028] In some embodiments of the present application, the battery cell includes an electrode assembly; the electrode assembly is a wound structure and is flat, and the outer surface of the electrode assembly includes two flat surfaces, and the two flat surfaces face each other along a third direction;

[0029] Or, the electrode assembly is a laminated structure, and the first electrode sheet, the diaphragm, and the second electrode sheet of the electrode assembly are stacked along a third direction;

[0030] The third direction intersects with both the first direction and the first surface. By configuring the electrode assembly to be a laminated structure or a wound structure, the electrode assembly can effectively supply power to the electrical device.

[0031] 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. The at least two battery cells are arranged along the first direction, and when heat exchange of the battery cells is required, the heat conductive member can be arranged along the first direction, so that heat exchange of the at least two battery cells in the battery assembly can be performed separately, thereby increasing the heat exchange speed of the heat conductive member.

[0032] In some embodiments of the present application, along the first direction, the maximum size of the battery cell is L, and along the second direction, the maximum size of the battery cell is H, and the L / H range is 0.5 to 6; the second direction intersects both the first direction and the horizontal plane. The battery cells are arranged according to the above-mentioned size ratios, which can maximize the power of the battery cells while improving the supporting strength of the battery cells.

[0033] In some embodiments of the present application, along the third direction, the maximum size of the battery cell is D, wherein the L / D range is 1 to 30; the first direction, the second direction and the third direction intersect each other. The battery cells are arranged according to the above size ratio, which can maximize the power of the battery cells while improving the supporting strength of the battery cells.

[0034] In some embodiments of the present application, the battery further includes a baffle, which is arranged along the second direction opposite to the second surface of the battery cell provided with the electrode terminal, the interval between the electrode terminal and the baffle is 1.2 mm to 25 mm, and the second direction intersects both the first direction and the horizontal plane. The baffle is arranged with an interval of 1.2 mm to 25 mm from the electrode terminal, which can reduce the collision between the baffle and the electrode terminal when the battery is impacted along the second direction, thereby reducing the damage to the electrode terminal.

[0035] 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 can be arranged below the battery cell along the second direction, or above the battery cell along the second direction, so as to perform a reasonable installation arrangement according to the actual installation position.

[0036] In some embodiments of the present application, the electrode terminal is provided on a second surface; the battery further comprises a support plate, the battery cell is fixedly connected to the support plate via another second surface where the electrode terminal is not provided, and the second direction intersects both the first direction and the horizontal plane. The battery cell is fixed in the box via the support plate so as to install and fix the battery cell.

[0037] In some embodiments of the present application, a heat conductor is further included. The heat conductor is arranged along the first direction, and the other second surface is fixedly connected to the support plate through the first adhesive layer; the heat conductor is thermally connected to the first surface through the second adhesive layer, and the thermal conductivity of the first adhesive layer is less than or equal to the thermal conductivity of the second adhesive layer. Since the first adhesive layer is used to connect the second surface and the support plate, and the second adhesive layer is used to thermally connect the first surface and the heat conductor, the thermal conductivity of the first adhesive layer is set to be less than or equal to the thermal conductivity of the second adhesive layer, so as to more effectively exchange heat with the battery cell through the heat conductor.

[0038] In some embodiments of the present application, the ratio of the thermal conductivity of the first adhesive layer to the thermal conductivity of the second adhesive layer is in the range of 0.1 to 1. The above ratio range can effectively exchange heat for the battery cells through the heat conductive member.

[0039] The second aspect of the present application proposes an electrical device, comprising any one of the batteries described above, wherein the battery is used to provide electrical energy to drive the electrical device to move.

[0040] In some embodiments of the present application, when the length direction of the battery is different from the walking direction of the electric device, the first direction is the walking direction of the electric device. The first direction is set as the walking direction of the electric device. When the electrode terminal is set on the second surface, the electrode terminal can be set in the vertical direction or along the walking direction of the electric device, so that when the electric device collides in the lateral direction of the walking direction, it will not hit the electrode terminal, thereby reducing the damage to the electrode terminal, so that the battery can supply power normally. When the electrode terminal is set on the first surface, since the first surface is the surface with the largest area, the proportion of the electrode terminal on the first surface is small. When the electric device collides, it is not easy to hit the electrode terminal, thereby reducing the damage to the electrode terminal, so that the battery can supply power normally.

[0041] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0043] Figure 1 It is a structural schematic diagram of an electrical device provided in one embodiment of the present application;

[0044] Figure 2 is a schematic diagram of the exploded structure of a battery provided in one embodiment of the present application;

[0045] Figure 3 is a schematic structural diagram of a battery assembly provided in one embodiment of the present application;

[0046] Figure 4 is a schematic structural diagram of a battery cell provided in one embodiment of the present application;

[0047] Figure 5 is a schematic diagram of the exploded structure of a battery cell provided in one embodiment of the present application;

[0048] Figure 6 is a schematic diagram of the structure of a battery provided in one embodiment of the present application;

[0049] Figure 7 is a schematic diagram of the exploded structure of a battery provided in one embodiment of the present application;

[0050] Figure 8 is a schematic structural diagram of a battery assembly provided in one embodiment of the present application;

[0051] Fig. 9 is a schematic structural diagram of a battery assembly provided in one embodiment of the present application;

[0052] Fig.10 is a schematic structural diagram of a battery assembly provided in one embodiment of the present application;

[0053] Fig.11 is a schematic structural diagram of a battery cell provided in one embodiment of the present application;

[0054] Fig.12 is a schematic structural diagram of a battery assembly provided in one embodiment of the present application;

[0055] Fig.13 is a schematic structural diagram of a battery cell provided in one embodiment of the present application;

[0056] Fig.14 is a schematic structural diagram of a battery assembly provided in one embodiment of the present application;

[0057] Fig.15 is a schematic structural diagram of a battery assembly provided in one embodiment of the present application;

[0058] Fig.16 is a schematic structural diagram of a battery cell provided in one embodiment of the present application;

[0059] Fig.17 is a schematic structural diagram of a heat conducting member provided in one embodiment of the present application;

[0060] Fig.18 It is a structural schematic diagram of the second part provided by an embodiment of the present application;

[0061] Fig.19 It is a schematic diagram of the assembly structure of the second part and the battery assembly provided in one embodiment of the present application;

[0062] Fig. 20 is an enlarged structural schematic diagram of part A provided in one embodiment of the present application;

[0063] Fig.21 It is a schematic diagram of the BB cross-sectional structure provided by an embodiment of the present application;

[0064] Fig. 22 is an enlarged structural schematic diagram of the C portion provided in one embodiment of the present application;

[0065] Fig.23 It is a schematic diagram of the internal structure of the second part provided by an embodiment of the present application;

[0066] Fig.24 is an enlarged structural schematic diagram of the D portion provided in one embodiment of the present application;

[0067] Fig.25 This is a schematic diagram of the distribution structure of batteries on electrical equipment provided in one embodiment of the present application.

[0068] The reference numerals in the specific implementation manner are as follows:

[0069] 1: Electrical equipment;

[0070] 10: battery, 11: controller, 12: motor;

[0071] 20: battery assembly, 21: battery cell, 211: housing, 2111: first surface, 2112: third surface, 212: cover plate, 2121: second surface, 213: electrode assembly, 2131: main body, 2132: pole ear, 214: electrode terminal, 215: pressure relief mechanism;

[0072] 30: box body, 31: first part, 311: support plate, 32: second part, 321: baffle;

[0073] 40: heat conducting parts;

[0074] 50: current collecting parts;

[0075] 61: first adhesive layer, 62: second adhesive layer. DETAILED DESCRIPTION

[0076] The following detailed description of the implementation of the technical solution of the present application is provided in conjunction with the accompanying drawings. The following implementation is only used to more clearly illustrate the technical solution of the present application, and is therefore only used as an example, and cannot be used to limit the scope of protection of the present application.

[0077] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should have the common meanings understood by technicians in the field to which the embodiments of the present application belong.

[0078] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0079] In addition, the technical terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0080] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0081] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0082] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. Lithium-ion batteries have been widely used in mobile and portable electrical appliances due to their high energy density, high average open circuit voltage and long cycle life.

[0083] The battery includes multiple battery cells, each of which is provided with electrode terminals, through which the battery cells are powered. However, due to the location of the electrode terminals, when a vehicle collides, the electrode terminals are easily hit, thus causing damage to the electrode terminals, affecting the normal power supply process of the battery cells, and even causing safety hazards.

[0084] In order to solve the problem of electrode terminal damage caused by vehicle collision, the present application designs a battery, including a battery assembly, the battery assembly includes at least one battery cell, the battery assembly is arranged along a first direction, the first direction is the length direction of the battery or the walking direction of the electrical equipment having the battery; the battery cell includes multiple surfaces, the multiple surfaces include a first surface with the largest area; the multiple surfaces also include two second surfaces arranged opposite to each other along a second direction, the second direction intersecting with the first direction; the battery cell also includes electrode terminals, the electrode terminals are arranged on the first surface or at least one second surface.

[0085] According to the battery of the present application, when the electrode terminal is arranged on the second surface, since the two second surfaces are arranged relatively to each other along the second direction and the second direction intersects with the first direction, that is, the electrode terminal will not be arranged at the end of the length direction of the battery or the end of the walking direction of the electrical equipment, when the electrical equipment collides along the walking direction, the electrode terminal will not be hit, thereby reducing the damage to the electrode terminal, so that the battery can supply power normally. When the electrode terminal is arranged on the first surface, since the first surface is the surface with the largest area, the proportion of the electrode terminal to the first surface is small, and when the electrical equipment collides, it is not easy to hit the electrode terminal, thereby reducing the damage to the electrode terminal, so that the battery can supply power normally.

[0086] The present application provides a battery and an electrical device having the battery. The battery can be applicable to various electrical devices using batteries, such as electric vehicles, electric toys, electric tools, electric vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.; the battery is used to provide electrical energy for the above-mentioned electrical devices.

[0087] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the batteries and electrical equipment described above, but can also be applied to all batteries including a box and electrical equipment using the battery. However, for the sake of simplicity, the following embodiments are explained using electric vehicles as an example.

[0088] Figure 1 A schematic diagram of the structure of an electrical device 1 provided in some embodiments of the present application. Figure 2 It is a schematic diagram of the exploded structure of a battery 10 provided in one embodiment of the present application. Figure 3 2 is a schematic diagram of the structure of a battery assembly 20 provided in one embodiment of the present application. Figures 1 to 3As shown, the electric device 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 10 is arranged inside the electric device 1, and the battery 10 can be arranged at the bottom, head or tail of the electric device 1. The battery 10 can be used to power the electric device 1, for example, the battery 10 can be used as an operating power supply for the electric device 1. The electric device 1 can also include a controller 11 and a motor 12, and the controller 11 is used to control the battery 10 to power the motor 12, for example, for starting, navigating and driving the electric device 1. Working power requirements.

[0089] In some embodiments of the present application, the battery 10 can not only serve as an operating power source for the electrical device 1, but also serve as a driving power source for the electrical device 1, replacing or partially replacing fuel or natural gas to provide driving power for the electrical device 1.

[0090] In order to meet different power usage requirements, the battery 10 may include a plurality of battery cells 21, where a battery cell 21 refers to the smallest unit that constitutes a battery assembly 20 or a battery pack. A plurality of battery cells 21 can be connected in series and / or in parallel via electrode terminals for use in various applications. The battery 10 mentioned in the present application is a battery pack. Among them, a plurality of battery cells 21 can be connected in series, in parallel, or in mixed connection, where mixed connection refers to a mixture of series and parallel connection. In the embodiment of the present application, a plurality of battery cells 21 can directly constitute a battery pack, or they can first constitute a battery assembly 20, and the battery assembly 20 can then constitute a battery pack.

[0091] Combination Figure 2 and Figure 3 As shown, the battery 10 may include a plurality of battery assemblies 20 and a box 30, and the plurality of battery assemblies 20 are accommodated inside the box 30. The box 30 is used to accommodate the battery cells 21 or the battery assemblies 20 to reduce the influence of liquid or other foreign matter on the charging or discharging of the battery cells 21. The box 30 may be a simple three-dimensional structure such as a single cuboid, cylinder or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as cuboids, cylinders or spheres, which is not limited in the embodiments of the present application. The material of the box 30 may be an alloy material such as aluminum alloy, iron alloy, etc., or a polymer material such as polycarbonate, polyisocyanurate foam plastic, or a composite material such as glass fiber plus epoxy resin, which is not limited in the embodiments of the present application.

[0092] In some embodiments, the box body 30 may include a first portion 31 and a second portion 32, the first portion 31 and the second portion 32 cover each other, and the first portion 31 and the second portion 32 jointly define a space for accommodating the battery cell 21. The second portion 32 may be a hollow structure with one end open, and the first portion 31 may be a plate-like structure, and the first portion 31 covers the open side of the second portion 32, so that the first portion 31 and the second portion 32 jointly define a space for accommodating the battery cell 21; the first portion 31 and the second portion 32 may also be hollow structures with one side open, and the open side of the first portion 31 covers the open side of the second portion 32.

[0093] The battery assembly 20 may include a plurality of battery cells 21. The plurality of battery cells 21 may be connected in series, in parallel, or in a mixed connection to form the battery assembly 20, and the plurality of battery assemblies 20 may be connected in series, in parallel, or in a mixed connection to form the battery 10. The battery cell 21 may be cylindrical, flat, rectangular, or in other shapes, and the embodiments of the present application are not limited thereto. The battery cell 21 generally includes: cylindrical cells, square shell cells, soft-pack cells, and cells with multi-prismatic cross-sections, and the embodiments of the present application are not limited thereto. However, for the sake of simplicity, the following embodiments are all described using a square lithium-ion battery cell 21 as an example.

[0094] Figure 4 is a schematic structural diagram of a battery cell 21 provided in one embodiment of the present application; Figure 5 2 is a schematic diagram of the exploded structure of a battery cell 21 provided in one embodiment of the present application. The battery cell 21 refers to the smallest unit constituting the battery 10. Figure 4 and Figure 5 As shown, the battery cell 21 includes a cover plate 212 , a shell 211 and an electrode assembly 213 .

[0095] The cover plate 212 refers to a component that covers the opening of the shell 211 to isolate the internal environment of the battery cell 21 from the external environment. Without limitation, the shape of the cover plate 212 can be adapted to the shape of the shell 211 to match the shell 211. Optionally, the cover plate 212 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the cover plate 212 is not easily deformed when squeezed and collided, so that the battery cell 21 can have a higher structural strength and the safety performance can also be improved. Functional components such as electrode terminals 214 can be provided on the cover plate 212. The electrode terminal 214 can be used to electrically connect to the electrode assembly 213 for outputting or inputting electrical energy of the battery cell 21. In some embodiments, the cover plate 212 can also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 21 reaches a threshold. In some embodiments, an insulating member may be provided inside the cover plate 212 to isolate the electrical connection components in the housing 211 from the cover plate 212 to reduce the risk of short circuit. For example, the insulating member may be plastic, rubber, or the like.

[0096] The shell 211 is a component used to cooperate with the cover plate 212 to form the internal environment of the battery cell 21, wherein the formed internal environment can be used to accommodate the electrode assembly 213, the electrolyte (not shown in the figure) and other components. The shell 211 and the cover plate 212 can be independent components, and an opening can be set on the shell 211, and the internal environment of the battery cell 21 is formed by covering the opening with the cover plate 212 at the opening. Without limitation, the cover plate 212 and the shell 211 can also be integrated. Specifically, the cover plate 212 and the shell 211 can form a common connection surface before other components are put into the shell, and when it is necessary to encapsulate the interior of the shell 211, the cover plate 212 covers the shell 211. The shell 211 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell 211 can be determined according to the specific shape and size of the electrode assembly 213. The shell 211 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not impose any special restrictions on this.

[0097] The electrode assembly 213 is a component in the battery cell 21 where electrochemical reactions occur. One or more electrode assemblies 213 may be contained in the housing 211. The electrode assembly 213 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the electrode assembly 213, and the parts of the positive and negative electrode sheets without active materials each constitute a pole ear (not shown in the figure). The positive pole ear and the negative pole ear may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the pole ear connects the electrode terminal 214 to form a current loop.

[0098] Figure 6 is a schematic structural diagram of a battery 10 provided in one embodiment of the present application; Figure 7 1 is a schematic diagram of the exploded structure of a battery 10 provided in one embodiment of the present application. Figures 3 to 7 As shown, 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 arranged along a first direction, the first direction is the length direction of the battery 10 or the walking direction of the electrical equipment having the battery 10; the battery cell 21 includes multiple surfaces, the multiple surfaces include a first surface 2111 with the largest area; the multiple surfaces also include two second surfaces 2121 arranged opposite to each other along a second direction, the second direction intersects with the first direction and the horizontal plane; the battery cell 21 also includes an electrode terminal 214, and the electrode terminal 214 is arranged on at least one second surface 2121.

[0099] Specifically, combined Figure 1 , Figure 3 , Figure 4 and Figure 7 As shown, in some embodiments of the present application, the battery cell 21 may be a square shell-shaped battery cell 21, and the battery cell 21 includes two first surfaces 2111 arranged oppositely along a first direction, two second surfaces 2121 arranged oppositely along a second direction, and two third surfaces 2112 arranged oppositely along a third direction. The second surface 2121 is provided with an electrode terminal 214. The second surface 2121 is provided with an electrode terminal 214. The first direction may be the length direction of the battery 10 or the walking direction of the electric 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 electric device 1.

[0100] When the electrode terminal 214 is arranged on the second surface 2121, that is, the electrode terminal 214 is arranged in the vertical direction, when the electrical equipment 1 is hit in the lateral direction along the walking direction, the electrode terminal 214 will not be hit, thereby reducing the damage to the electrode terminal 214, so that the battery 10 can supply power normally.

[0101] Figure 8 2 is a schematic diagram of the structure of a battery assembly 20 provided in one embodiment of the present application. Figure 1 , Figure 4 , Figure 7 and Figure 8 As shown, in some embodiments of the present application, the battery cell 21 is a square shell-shaped battery cell 21. The battery cell 21 includes two first surfaces 2111 arranged opposite to each other along the third direction, two second surfaces 2121 arranged opposite to each other along the second direction, and two third surfaces 2112 arranged opposite to each other along the first direction. Among them, the electrode terminal 214 is provided on the second surface 2121. Among them, the first direction can be the length direction of the battery 10 or the walking direction of the electric device 1, the second direction can be the vertical direction, and the third direction can be the width direction of the battery 10 or the lateral direction of the electric device 1.

[0102] When the electrode terminal 214 is arranged on the second surface 2121, that is, the electrode terminal 214 is arranged in the vertical direction, when the electrical equipment 1 is hit in the lateral direction along the walking direction, the electrode terminal 214 will not be hit, thereby reducing the damage to the electrode terminal 214, so that the battery 10 can supply power normally.

[0103] Fig. 9 2 is a schematic diagram of the structure of a battery assembly 20 provided in one embodiment of the present application. Figure 1 , Figure 4 , Figure 7 and Fig. 9 As shown, in some embodiments of the present application, the battery cell 21 is a square shell-shaped 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 two third surfaces 2112 arranged opposite to each other along the third direction. Among them, the electrode terminal 214 is provided on the second surface 2121. Among them, the first direction can be the length direction of the battery 10 or the walking direction of the electric device 1, the second direction can be the vertical direction, and the third direction can be the width direction of the battery 10 or the lateral direction of the electric device 1.

[0104] When the electrode terminal 214 is arranged on the second surface 2121, since the two second surfaces 2121 are arranged relatively to each other along the first direction, that is, the electrode terminal 214 is arranged at the end of the length direction of the battery 10 or the end of the walking direction of the electrical equipment 1, when the electrical equipment 1 is hit in the lateral direction along the walking direction, the electrode terminal 214 will not be hit, thereby reducing the damage to the electrode terminal 214, so that the battery 10 can supply power normally.

[0105] Fig.10 is a schematic structural diagram of a battery assembly 20 provided in one embodiment of the present application; Fig.11 2 is a schematic diagram of the structure of a battery cell 21 provided in one embodiment of the present application. Figure 1 , Figure 7 , Fig.10 ,and Fig.11 As shown, 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 arranged opposite to each other along a second direction. Among them, an electrode terminal 214 is protrudingly provided on one of the second surfaces 2121. Among them, the first direction can be the length direction of the battery 10 or the walking direction of the electric device 1, and the second direction can be the vertical direction.

[0106] When the electrode terminal 214 is arranged on the second surface 2121, that is, the electrode terminal 214 is arranged in the vertical direction, when the electrical equipment 1 is hit in the lateral direction along the walking direction, the electrode terminal 214 will not be hit, thereby reducing the damage to the electrode terminal 214, so that the battery 10 can supply power normally.

[0107] Fig.12 is a schematic structural diagram of a battery assembly 20 provided in one embodiment of the present application; Fig.13 Schematic diagram of the structure of a battery cell provided by an embodiment of the present application. Figure 1 , Figure 7 , Fig.12 and Fig.13 As shown, in some embodiments of the present application, the battery cell 21 is a square shell-shaped 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 two third surfaces 2112 arranged opposite to each other along the third direction. Among them, the electrode terminal 214 is provided on the second surface 2121. Among them, the first direction can be the length direction of the battery 10 or the walking direction of the electric device 1, the second direction can be the vertical direction, and the third direction can be the width direction of the battery 10 or the lateral direction of the electric device 1.

[0108] When the electrode terminal 214 is arranged on the second surface 2121, that is, the electrode terminal 214 is arranged at the end of the length direction of the battery 10 or the end of the electric device 1 in the walking direction, when the electric device 1 is hit in the lateral direction along the walking direction, the electrode terminal 214 will not be hit, thereby reducing the damage to the electrode terminal 214, so that the battery 10 can supply power normally.

[0109] Fig.14 Schematic diagram of the structure of a battery assembly provided by an embodiment of the present application. Figure 1 , Figure 7 , Fig.13 and Fig.14 As shown, in some embodiments of the present application, the battery cell 21 is a square shell-shaped 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 two third surfaces 2112 arranged opposite to each other along the third direction. Among them, at least one second surface 2121 is provided with an electrode terminal 214. Among them, the first direction can be the length direction of the battery 10 or the walking direction of the electric device 1, the second direction can be the width direction of the battery 10 or the lateral direction of the electric device 1, and the third direction can be the vertical direction.

[0110] When the electrode terminal 214 is arranged on the second surface 2121, that is, the electrode terminal 214 is arranged at the end of the length direction of the battery 10 or the end of the electric device 1 in the walking direction, when the electric device 1 is hit in the lateral direction along the walking direction, the electrode terminal 214 will not be hit, thereby reducing the damage to the electrode terminal 214, so that the battery 10 can supply power normally.

[0111] Fig.15 is a schematic structural diagram of a battery assembly provided in one embodiment of the present application; Fig.16 Schematic diagram of the structure of a battery cell provided by an embodiment of the present application. Figure 1 , Figure 7 , Fig.15 and Fig.16 As shown, in some embodiments of the present application, the battery cell 21 is a square shell-shaped battery cell 21. The battery cell 21 includes two first surfaces 2111 arranged opposite to each other along the third direction, two second surfaces 2121 arranged opposite to each other along the second direction, and two third surfaces 2112 arranged opposite to each other along the first direction. Among them, the first surface 2111 is provided with an electrode terminal 214. Among them, the first direction can be the length direction of the battery 10 or the walking direction of the electric device 1, the second direction can be the vertical direction, and the third direction can be the width direction of the battery 10 or the lateral direction of the electric device 1.

[0112] When the electrode terminal 214 is disposed on the first surface 2111, since the first surface 2111 is the surface with the largest area, the electrode terminal 214 occupies a small area on the first surface 2111. When the electrical device 1 is hit, the electrode terminal 214 is not easily hit, thereby reducing the damage to the electrode terminal 214 and allowing the battery 10 to supply power normally.

[0113] According to the battery 10 of the present application, when the electrode terminal 214 is arranged on the second surface 2121, the electrode terminal 214 can be arranged in the vertical direction or in the walking direction of the electric device 1, so that when the electric device 1 collides in the lateral direction along the walking direction, the electrode terminal 214 will not be hit, thereby reducing the damage to the electrode terminal 214, so that the battery 10 can supply power normally. When the electrode terminal 214 is arranged on the first surface 2111, since the first surface 2111 is the surface with the largest area, the electrode terminal 214 occupies a small area on the first surface 2111. When the electric device 1 collides, it is not easy to hit the electrode terminal 214, thereby reducing the damage to the electrode terminal 214, so that the battery 10 can supply power normally.

[0114] Combination Figure 4 and Figure 8 As shown, in some embodiments of the present application, the first surface 2111 intersects with the horizontal plane.

[0115] Specifically, in some embodiments of the present application, the first surface 2111 may be disposed along a vertical direction.

[0116] Combination Fig.10 and Fig.11 As shown, in some embodiments of the present application, the first surface 2111 intersects with the horizontal plane.

[0117] Combination Fig.12 and Fig.13 As shown, in some embodiments of the present application, the first surface 2111 intersects with the horizontal plane.

[0118] Combination Fig.15 and Fig.16 As shown, in some embodiments of the present application, the first surface 2111 intersects with the horizontal plane.

[0119] Since the first surface 2111 is the surface with the largest area of ​​the battery cell 21 , intersecting the first surface 2111 with the horizontal plane can maximize the number of battery cells 21 arranged in the horizontal plane, thereby improving the overall energy density of the battery 10 .

[0120] Fig.17 Schematic diagram of the structure of the heat conducting member 40 provided in one embodiment of the present application. Figure 4 , Figure 7 , Figure 8 and Fig.17 As shown, in some embodiments of the present application, a heat conductive member 40 is further included, and the heat conductive member 40 is arranged along the first direction; each battery cell 21 of the battery assembly 20 is thermally connected to the heat conductive member 40 at least through the first surface 2111.

[0121] Specifically, the heat conductor 40 can be thermally connected to the battery cell 21, and the heat of the battery cell 21 is transferred to the heat conductor 40, thereby achieving heat exchange of the battery cell 21. Among them, the heat exchange of the battery cell 21 includes cooling and dissipating the heat of the battery cell 21, or heating the battery cell 21. The heat conductor 40 can be a heat-conducting plate, a heat-conducting glue or a heat-conducting structure. In some embodiments, the heat-conducting plate can be a metal plate, such as a copper plate, an aluminum plate, etc., or other materials with good thermal conductivity. In some embodiments, a cavity can also be provided inside the heat conductor. In some embodiments of the present application, the heat conductor 40 is a heat-conducting plate. Since the first surface 2111 is thermally connected to the heat conductor 40, and the first surface 2111 intersects with the horizontal plane, the heat conductor 40 also intersects with the horizontal plane. In some embodiments of the present application, the heat conductor 40 is arranged in the vertical direction and extends in the first direction.

[0122] Combination Figure 4 , Figure 7 , Figure 8 and Fig.17 As shown, the heat conducting member 40 is arranged along the first direction and intersects with the horizontal plane, and the battery cell 21 is thermally connected to the heat conducting member 40 through the first surface 2111 .

[0123] Combination Figure 7 , Fig.10 , Fig.11 and Fig.17 As shown, in some embodiments of the present application, the heat conductive member 40 is arranged along a first direction and intersects with a horizontal plane, and the battery cell 21 is thermally connected to the heat conductive member 40 via a first surface 2111 .

[0124] Combination Figure 7 , Fig.15 , Fig.16 and Fig.17 As shown, in some embodiments of the present application, the heat conductive member 40 is arranged along a first direction and intersects with a horizontal plane, and the battery cell 21 is thermally connected to the heat conductive member 40 via a first surface 2111 .

[0125] The heat conductive member 40 is arranged along the first direction, so that any battery cell 21 in the battery assembly 20 can be heat exchanged through the heat conductive member 40. At the same time, when the electrical equipment 1 collides along the lateral direction, the impact force will not directly act on the end of the heat conductive member 40, thereby reducing the damage of the heat conductive member 40. At the same time, the battery cell 21 is thermally connected to the heat conductive member 40 through the first surface 2111, which can maximize the contact area between the heat conductive member 40 and the battery cell 21, thereby improving the heat exchange effect of the heat conductive member 40 on the battery cell 21.

[0126] Fig.18 is a schematic structural diagram of the second part 32 provided in one embodiment of the present application; Fig.19 It is a schematic diagram of the assembly structure of the second part 32 and the battery assembly 20 provided in one embodiment of the present application; Fig. 20 Schematic diagram of the enlarged structure of the A part provided by one embodiment of the present application. Figure 4 , Figure 8 , Fig.18 , Fig.19 and Fig. 20 As shown, in some embodiments of the present application, the battery 10 includes at least two battery assemblies 20; along the third direction, the two sides of the heat conductor 40 are thermally connected to the two battery assemblies 20 respectively; the third direction intersects with both the first direction and the first surface 2111.

[0127] Specifically, the heat conductive member 40 is disposed between the two battery assemblies 20 and is thermally connected to the two battery assemblies 20. The third direction is the width direction of the battery 10 or the lateral direction of the walking direction of the electric device 1. By thermally connecting the two sides of the heat conductive member 40 to the first surface 2111 of the battery cell 21, the heat exchange effect of the heat conductive member 40 on the battery cell 21 is improved.

[0128] Combination Fig.10 , Fig.11 , Fig.18 , Fig.19 and Fig. 20 As shown, in some embodiments of the present application, the battery 10 includes at least two battery assemblies 20; along the third direction, the two sides of the heat conductor 40 are thermally connected to the two battery assemblies 20 respectively; the third direction intersects with both the first direction and the first surface 2111.

[0129] Combination Figure 1 and Fig.19 As shown, in some embodiments of the present application, the length direction of the battery 10 is parallel to or intersects with the moving direction of the electric device 1.

[0130] Specifically, in some embodiments of the present application, the length direction of the battery 10 can be set parallel to the travel direction of the electrical equipment 1, so that when the heat conductor 40 is set along the length direction of the battery 10, the two ends of the heat conductor 40 are respectively arranged at the two ends of the length direction of the battery 10, that is, respectively arranged at the two ends of the travel direction of the electrical equipment 1. When the electrical equipment 1 collides in the lateral direction, the impact force will not directly act on the end of the heat conductor 40, thereby reducing the damage of the heat conductor 40 and improving the safety and reliability of the use of the battery 10.

[0131] In some embodiments of the present application, the length direction of the battery 10 may be set at an angle to the travel direction of the electric device 1 , and the electric device 1 may also be powered by the battery 10 , thereby facilitating the setting of the position of the battery 10 .

[0132] Combination Figures 17 to 20 As shown, in some embodiments of the present application, a heat exchange medium channel is provided in the heat conducting member 40 .

[0133] The heat exchange medium channel is used to circulate the heat exchange medium, so that the heat emitted by the battery cell 21 is taken away by the flow of the heat exchange medium, or the battery cell 21 is heated, thereby improving the heat exchange efficiency of the battery cell 21. The heat exchange medium can be a heat exchange liquid, specifically oil or water.

[0134] Fig.21 It is a schematic diagram of the BB cross-sectional structure provided by an embodiment of the present application; Fig. 22 Schematic diagram of the enlarged structure of the C part provided in one embodiment of the present application. Figure 4 , Figure 8 , Fig.19 , Fig. 20 , Fig.21 and Fig. 22 As shown, in some embodiments of the present application, the battery 10 includes a plurality of heat conductive members 40 , and the plurality of heat conductive members 40 are arranged along a third direction, and the third direction intersects both the first direction and the first surface 2111 .

[0135] Combination Fig.10 , Fig.11 , Fig.19 , Fig. 20 , Fig.21 and Fig. 22 As shown, in some embodiments of the present application, the battery 10 includes a plurality of heat conductive members 40 , and the plurality of heat conductive members 40 are arranged along a third direction, and the third direction intersects both the first direction and the first surface 2111 .

[0136] Combination Fig.12 , Fig.13 , Fig.19 , Fig. 20 , Fig.21and Fig. 22 As shown, in some embodiments of the present application, the battery 10 includes a plurality of heat conductive members 40 , and the plurality of heat conductive members 40 are arranged along a third direction, and the third direction intersects both the first direction and the first surface 2111 .

[0137] Combination Fig.15 , Fig.16 , Fig.19 , Fig. 20 , Fig.21 and Fig. 22 As shown, in some embodiments of the present application, the battery 10 includes a plurality of heat conductive members 40 , and the plurality of heat conductive members 40 are arranged along a third direction, and the third direction intersects both the first direction and the first surface 2111 .

[0138] Specifically, the first direction is the length direction of the battery 10, and the third direction is the width direction of the battery 10. Multiple heat conductive members 40 are arranged along the third direction, and are thermally connected to the first surface 2111 of the battery cell 21 through multiple heat conductive members 40, and are jointly used to dissipate heat from the battery 10, thereby effectively improving the heat exchange speed of the battery 10.

[0139] Combination Figure 4 , Figure 8 , Fig.19 , Fig. 20 , Fig.21 and Fig. 22 As shown, in some embodiments of the present application, along the third direction, heat conducting members 40 are respectively provided on both sides of the battery assembly 20; the battery assembly 20 is thermally connected to the heat conducting members 40 on both sides.

[0140] Combination Fig.10 , Fig.11 , Fig.19 , Fig. 20 , Fig.21 and Fig. 22 As shown, in some embodiments of the present application, along the third direction, heat conducting members 40 are respectively provided on both sides of the battery assembly 20; the battery assembly 20 is thermally connected to the heat conducting members 40 on both sides.

[0141] Combination Fig.12 , Fig.13 , Fig.19 , Fig. 20 , Fig.21 and Fig. 22 As shown, in some embodiments of the present application, along the third direction, heat conducting members 40 are respectively provided on both sides of the battery assembly 20; the battery assembly 20 is thermally connected to the heat conducting members 40 on both sides.

[0142] Combination Fig.15 , Fig.16 , Fig.19 , Fig. 20 , Fig.21 and Fig. 22 As shown, in some embodiments of the present application, along the third direction, heat conducting members 40 are respectively provided on both sides of the battery assembly 20; the battery assembly 20 is thermally connected to the heat conducting members 40 on both sides.

[0143] By thermally connecting both sides of the battery assembly 20 to the heat conducting member 40 at the same time, heat is dissipated through both sides of the battery assembly 20 at the same time, thereby effectively improving the heat exchange speed of the battery 10 .

[0144] Combination Figure 4 , Figure 8 , Fig.19 , Fig. 20 , Fig.21 and Fig. 22 As shown, in some embodiments of the present application, along the third direction, the battery cell 21 includes two opposite first surfaces 2111 , and the two first surfaces 2111 of the battery cell 21 are thermally connected to a heat conductive member 40 respectively.

[0145] Combination Fig.12 , Fig.13 , Fig.19 , Fig. 20 , Fig.21 and Fig. 22 As shown, in some embodiments of the present application, along the third direction, the battery cell 21 includes two opposite first surfaces 2111 , and the two first surfaces 2111 of the battery cell 21 are thermally connected to a heat conductive member 40 respectively.

[0146] When the battery cell 21 has two first surfaces 2111 with the largest areas, the heat exchange rate of the battery 10 is effectively improved by dissipating heat from the two first surfaces 2111 at the same time.

[0147] Combination Figure 4 , Figure 5 , Figure 8 , Fig.21 and Fig. 22 As shown, in some embodiments of the present application, the battery cell 21 includes an electrode assembly 213, the electrode assembly 213 includes a main body 2131 and a pole ear 2132 protruding from the main body 2131, the pole ear 2132 is electrically connected to the electrode terminal 214, and along the third direction, the projections of the heat conductor 40 and the main body 2131 at least partially overlap, and the third direction intersects with both the first direction and the first surface 2111.

[0148] Specifically, the heat conducting member 40 is extended along the first direction and is disposed on the side of the battery cell 21 along the third direction. The first direction is the length direction of the battery cell 21, and the third direction is the width direction of the battery cell 21.

[0149] Combination Fig.10 , Fig.11 , Fig.21 and Fig. 22 As shown, in some embodiments of the present application, the battery cell 21 includes an electrode assembly 213, the electrode assembly 213 includes a main body 2131 and a pole ear 2132 protruding from the main body 2131, the pole ear 2132 is electrically connected to the electrode terminal 214, and along the third direction, the projections of the heat conductor 40 and the main body 2131 at least partially overlap, and the third direction intersects with both the first direction and the first surface 2111.

[0150] Specifically, the heat conducting member 40 is extended along the first direction and is disposed on the side of the battery cell 21 along the third direction. The first direction is the moving direction of the electric device 1, and the third direction is the radial direction of the battery cell 21.

[0151] Combination Fig.12 , Fig.13 , Fig.21 and Fig. 22 As shown, in some embodiments of the present application, the battery cell 21 includes an electrode assembly 213, the electrode assembly 213 includes a main body 2131 and a pole ear 2132 protruding from the main body 2131, the pole ear 2132 is electrically connected to the electrode terminal 214, and along the third direction, the projections of the heat conductor 40 and the main body 2131 at least partially overlap, and the third direction intersects with both the first direction and the first surface 2111.

[0152] Specifically, the heat conducting member 40 is extended along the first direction and is disposed on the side of the battery cell 21 along the third direction. The first direction is the length direction of the battery cell 21, and the third direction is the width direction of the battery cell 21.

[0153] Combination Fig.15 , Fig.16 , Fig.21 and Fig. 22 As shown, in some embodiments of the present application, the battery cell 21 includes an electrode assembly 213, the electrode assembly 213 includes a main body 2131 and a pole ear 2132 protruding from the main body 2131, the pole ear 2132 is electrically connected to the electrode terminal 214, and along the third direction, the projections of the heat conductor 40 and the main body 2131 at least partially overlap, and the third direction intersects with both the first direction and the first surface 2111.

[0154] Specifically, the heat conducting member 40 is extended along the first direction and is arranged on the side of the battery cell 21 along the third direction. The first direction is the moving direction of the electric device 1, and the third direction is the lateral direction of the electric device 1.

[0155] By arranging the heat conductive member 40 and the main body 2131 to at least partially overlap along the second direction, the heat conductive member 40 can effectively exchange heat with the main body 2131 , thereby improving the heat exchange effect on the battery 10 .

[0156] Combination Figure 4 , Figure 5 , Figure 8 , Fig.21 and Fig. 22 As shown, in some embodiments of the present application, along the second direction, the size of the main body 2131 is L1, the size of the heat conductor 40 is L2, 0.5≤L2 / L1≤1.5, wherein the first direction, the second direction and the third direction intersect each other.

[0157] Specifically, the first direction is the length direction of the battery cell 21 , and the second direction is the height direction of the battery cell 21 .

[0158] Combination Fig.10 , Fig.11 , Fig.21 and Fig. 22 As shown, in some embodiments of the present application, along the second direction, the size of the main body 2131 is L1, the size of the heat conductor 40 is L2, 0.5≤L2 / L1≤1.5, wherein the first direction, the second direction and the third direction intersect each other.

[0159] Specifically, the first direction is the moving direction of the electric device 1 , and the second direction is the height direction of the battery cell 21 .

[0160] Combination Fig.12 , Fig.13 , Fig.21 and Fig. 22 As shown, in some embodiments of the present application, along the second direction, the size of the main body 2131 is L1, the size of the heat conductor 40 is L2, 0.5≤L2 / L1≤1.5, wherein the first direction, the second direction and the third direction intersect each other.

[0161] Specifically, the first direction is the moving direction of the electric device 1 , and the second direction is the height direction of the battery cell 21 .

[0162] Combination Fig.15 , Fig.16 , Fig.21 and Fig. 22 As shown, in some embodiments of the present application, along the second direction, the size of the main body 2131 is L1, the size of the heat conductor 40 is L2, 0.5≤L2 / L1≤1.5, wherein the first direction, the second direction and the third direction intersect each other.

[0163] Specifically, the first direction is the moving direction of the electric device 1 , and the second direction is the height direction of the battery cell 21 .

[0164] The L2 / L1 range value is set to be greater than 0.5 and less than 1.5, so that the heat conductive member 40 has a sufficient heat conductive area to exchange heat with the main body 2131, thereby greatly enhancing the heat exchange effect of the heat conductive member 40 on the main body 2131.

[0165] It should be understood that when L2 / L1 is less than 0.5, the size of the heat conductor 40 is too small to effectively exchange heat for the battery cell 21; when L2 / L1 is greater than 1.5, the size of the heat conductor 40 is large, which is easy to occupy the space of the battery 10, which is not conducive to improving the space utilization of the battery 10.

[0166] It should be pointed out that in some embodiments of the present application, the value of L2 / L1 can be 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4...1.5.

[0167] Combination Figure 4 , Figure 5 , Figure 8 , Fig.21 and Fig. 22 As shown, in some embodiments of the present application, along the second direction, the size of the overlapping area is L3, 0.5≤L3 / L1≤1.

[0168] It should be understood that when L3 / L1 is less than 0.5, the overlapping area between the heat conductive member 40 and the main body 2131 is too small, so that the heat exchange effect of the heat conductive member 40 on the battery cell 21 becomes poor and the heat of the battery cell 21 cannot be effectively dissipated.

[0169] It should be noted that, in some embodiments of the present application, the value of L3 / L1 can be 0.5, 0.6, 0.7, 0.8, 0.9...1.

[0170] By setting the size of the overlapping area in the second direction, the heat exchange area between the heat conductive member 40 and the main body 2131 can be reasonably set, which can greatly enhance the heat exchange effect of the heat conductive member 40 on the main body 2131 .

[0171] Combination Fig.19 and Fig. 20 As shown, in some embodiments of the present application, the battery 10 further includes a current collector 50, and the current collector 50 is in fluid communication with the plurality of heat conducting members 40;

[0172] The heat conducting member 40 is provided with a current collecting member 50 at one end in the first direction, or the heat conducting member 40 is provided with current collecting members 50 at both ends in the first direction. The current collecting member 50 is used to supply or recover the heat exchange medium in the heat exchange medium channel, so as to exchange heat with the battery 10.

[0173] Specifically, since multiple heat-conducting parts 40 are respectively arranged along the length direction of the battery 10 or along the traveling direction of the electrical equipment 1, in order to facilitate the fluid connection with multiple heat-conducting parts 40 through the current collecting part 50, the current collecting part 50 is arranged at one end in the length direction of the battery 10 or the end in the traveling direction of the electrical equipment 1, and the current collecting part 50 is arranged at one end or both ends according to actual needs.

[0174] The current collecting member 50 is arranged at the end of the first direction of the heat conducting member 40. When the electric device 1 collides in the lateral direction, the impact force will not directly act on the current collecting member 50 at the end of the moving direction of the electric device 1, thereby reducing the damage to the current collecting member 50 and improving the safety and reliability of the use of the battery 10.

[0175] Combination Fig.19 and Fig. 20 As shown, in some embodiments of the present application, there are two current collecting members 50, and the two current collecting members 50 are arranged at one end of the heat conducting member 40 in the first direction, and the two current collecting members 50 are arranged along the second direction, and the second direction intersects with the first direction and the horizontal plane.

[0176] Specifically, in some embodiments of the present application, the second direction may be a vertical direction, that is, two current collecting members 50 are arranged at intervals along the vertical direction. The two current collecting members 50 may be an inlet current collecting member and an outlet current collecting member, respectively.

[0177] The two current collectors 50 are arranged together at one end of the first direction and arranged along the second direction, which can effectively reduce the space occupied by the current collectors 50 in the battery 10 along the first direction, thereby facilitating the arrangement of other structures in the battery 10 and improving the energy density of the battery; the two current collectors are arranged together at one end of the first direction, which can also reduce the probability of damage to the current collectors when facing a collision in the first direction.

[0178] Combination Figure 3 and Figure 4 As shown, in some embodiments of the present application, the electrode terminal 214 includes two electrode terminals 214 with opposite polarities; the two electrode terminals 214 are arranged on one second surface 2121, or the two electrode terminals 214 are arranged on two second surfaces respectively. In some embodiments, one electrode terminal 214 of the two electrode terminals 214 can be formed by the housing 211 of the battery cell 21.

[0179] Specifically, combined Figure 3 and Figure 4As shown, the battery cell 21 includes two electrode terminals 214, and the two electrode terminals 214 are arranged on the same second surface 2121 along the second direction. The second direction may be a vertical direction. In some embodiments of the present application, the two electrode terminals 214 may also be arranged on two second surfaces 2121 respectively.

[0180] Combination Figure 3 and Figure 8 As shown, the battery cell 21 includes two electrode terminals 214, and the two electrode terminals 214 are arranged on the same second surface 2121 along the second direction. The second direction may be a vertical direction. In some embodiments of the present application, the two electrode terminals 214 may also be arranged on two second surfaces 2121 respectively.

[0181] Combination Figure 3 and Fig. 9 As shown, the battery cell 21 includes two electrode terminals 214, and the two electrode terminals 214 are arranged on the same second surface 2121 along the first direction. The first direction is the length direction of the battery 10 or the running direction of the electric device 1. In some embodiments of the present application, the two electrode terminals 214 can also be arranged on two second surfaces 2121 respectively.

[0182] Combination Fig.10 and Fig.11 As shown, the battery cell 21 includes two electrode terminals 214, and the two electrode terminals 214 are respectively arranged on two second surfaces 2121 along the second direction, wherein one electrode terminal 214 is flush with the end surface of the battery cell 21, and the end of the battery cell 21 is the electrode terminal 214. The second direction is the vertical direction.

[0183] Combination Fig.12 and Fig.13 As shown, the battery cell 21 includes two electrode terminals 214, and the two electrode terminals 214 are respectively arranged on two second surfaces 2121 along a first direction. The first direction is the length direction of the battery 10 or the running direction of the electric device 1. Alternatively, the two electrode terminals 214 can also be arranged on one second surface 2121.

[0184] Combination Fig.13 and Fig.14 As shown, the battery cell 21 includes two electrode terminals 214, and the two electrode terminals 214 are respectively arranged on two second surfaces 2121 along a first direction. The first direction is the length direction of the battery 10 or the running direction of the electric device 1. Alternatively, the two electrode terminals 214 can also be arranged on one second surface 2121.

[0185] The two electrode terminals 214 with opposite polarities are arranged on the same second surface 2121 of the battery cell 21 as needed, or are arranged on two second surfaces 2121 respectively, so that the electrode terminals 214 avoid the first surface 2111 that exchanges heat with the heat conductive member 40, so as to facilitate subsequent electrical connection with other adjacent battery cells 21.

[0186] Combination Figure 3 and Figure 4 As shown, in some embodiments of the present application, the battery cell 21 further includes a pressure relief mechanism 215 ; the pressure relief mechanism 215 and at least one electrode terminal 214 are disposed on the same second surface 2121 , or the pressure relief mechanism 215 and the electrode terminal 214 are disposed on two second surfaces 2121 respectively.

[0187] Specifically, combined Figure 3 and Figure 4 As shown, the battery cell 21 further includes a pressure relief mechanism 215, and the pressure relief mechanism 215 and the two electrode terminals 214 are jointly arranged on the same second surface 2121 along the second direction, wherein the second direction is a vertical direction. In some embodiments of the present application, the pressure relief mechanism 215 is arranged on one second surface 2121 along the second direction, and the two electrode terminals 214 are jointly arranged on another second surface 2121 along the second direction, or the two electrode terminals 214 are respectively arranged on two second surfaces 2121 along the second direction, and the pressure relief mechanism 215 and one of the electrode terminals 214 are jointly arranged on one of the second surfaces 2121.

[0188] Combination Fig.10 and Fig.11 As shown, the battery cell 21 also includes a pressure relief mechanism 215, wherein an electrode terminal 214 is protrudingly provided on one of the second surfaces 2121, and the pressure relief mechanism 215 and a protruding electrode terminal 214 are jointly arranged on the second surface 2121, or, an electrode terminal 214 is protrudingly provided on one of the second surfaces 2121, and a pressure relief mechanism 215 is provided on the other second surface 2121 without a protruding electrode terminal 214.

[0189] Combination Fig.12 and Fig.13 As shown, the battery cell further includes a pressure relief mechanism 215, two electrode terminals 214 are respectively arranged on two second surfaces 2121 along the first direction, and the pressure relief mechanism 215 and one of the electrode terminals 214 are jointly arranged on one of the second surfaces, wherein the first direction is the length direction of the battery 10 or the running direction of the electric device 1. Alternatively, the pressure relief mechanism 215 is arranged on one second surface 2121 along the first direction, and the two electrode terminals 214 are jointly arranged on the other second surface 2121 along the first direction, or the two electrode terminals 214 and the pressure relief mechanism 215 are jointly arranged on one of the second surfaces 2121.

[0190] The pressure relief mechanism 215 is connected to the inside of the battery cell 21, and is used to discharge the internal pressure of the battery cell 21 when the internal pressure of the battery cell 21 increases. The pressure relief mechanism 215 can be arranged on the same second surface 2121 as the electrode terminal 214, or on two second surfaces 2121 respectively, so that the pressure relief mechanism 215 avoids the first surface 2111 that exchanges heat with the heat conductive member 40, so that the pressure relief mechanism 215 can smoothly discharge the gas in the case of thermal runaway of the battery cell 21.

[0191] Combination Figure 1 , Fig.15 and Fig.16 As shown, in some embodiments of the present application, the electrode terminal 214 is disposed on the first surface 2111 .

[0192] Specifically, the battery cell 21 includes two electrode terminals 214, which are disposed on the first surface 2111. The length direction of the battery cell 21 is arranged along the first direction, which is the length direction of the battery 10 or the running direction of the electric device 1.

[0193] Disposing the electrode terminal 214 on the first surface 2111 can save the space occupied by the battery 10 along the second direction, thereby improving the energy density of the battery 10 .

[0194] Combination Fig.15 and Fig.16 As shown, in some embodiments of the present application, the battery cell 21 includes a first surface 2111 and a fourth surface arranged opposite to the first surface 2111, the first surface 2111 and the fourth surface are arranged opposite to each other along a third direction, and the third direction intersects with 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 to set the electrode terminal 214; the electrode terminal 214 is protruded on the first surface 2111 in the third direction and corresponds to the recess.

[0195] Specifically, combined Figure 1 , Fig.15 and Fig.16 As shown, the length direction of the battery cell 21 is arranged along the first direction. The battery cell 21 includes a first surface 2111 and a fourth surface arranged opposite to each other along the third direction. The edge of the fourth surface is provided with a recess. The first surface 2111 is used to set the electrode terminal 214.

[0196] The electrode terminal 214 is disposed on the first surface 2111, and a recess corresponding to the electrode terminal 214 is disposed at the edge of the fourth surface, so that the electrode terminal 214 of the adjacent battery cell 21 is accommodated by the recess, leaving an operating space for electrical connection, making the overall structure of the battery 10 more compact and having high space utilization. Figure 4 , Figure 5 and Figure 8 As shown, in some embodiments of the present application, the battery cell 21 includes an electrode assembly 213; the electrode assembly 213 is a wound structure and is flat, and the outer surface of the electrode assembly 213 includes two flat surfaces, and the two flat surfaces face each other along a third direction; or, the electrode assembly 213 is a stacked structure, and the first electrode sheet, the diaphragm, and the second electrode sheet of the electrode assembly 213 are stacked along a third direction; the third direction intersects with both the first direction and the first surface.

[0197] By configuring the electrode assembly 213 to have a laminated structure or a wound structure, the electrode assembly 213 can effectively supply power to the electrical device 1 .

[0198] Combination Figure 3 , Figure 4 and Figure 7 As shown, in some embodiments of the present application, the battery assembly 20 includes at least two battery cells 21, and the at least two battery cells 21 are arranged along a first direction.

[0199] Combination Figure 4 , Figure 7 and Figure 8 As shown, in some embodiments of the present application, the battery assembly 20 includes at least two battery cells 21, and the at least two battery cells 21 are arranged along a first direction.

[0200] Combination Figure 4 , Figure 7 and Fig. 9 As shown, in some embodiments of the present application, the battery assembly 20 includes at least two battery cells 21, and the at least two battery cells 21 are arranged along the first direction. Fig. 9 Only one battery cell 21 is illustrated along the first direction.

[0201] Combination Figure 7 , Fig.10 and Fig.11 As shown, in some embodiments of the present application, the battery assembly 20 includes at least two battery cells 21, and the at least two battery cells 21 are arranged along a first direction.

[0202] Combination Figure 7 , Fig.12 and Fig.13 As shown, in some embodiments of the present application, the battery assembly 20 includes at least two battery cells 21, and the at least two battery cells 21 are arranged along the first direction. Fig.12 Only one battery cell 21 is illustrated along the first direction.

[0203] Combination Figure 7 , Fig.13 and Fig.14 As shown, in some embodiments of the present application, the battery assembly 20 includes at least two battery cells 21, and the at least two battery cells 21 are arranged along the first direction. Fig.14 Only one battery cell 21 is illustrated along the first direction.

[0204] Combination Figure 7 , Fig.15 and Fig.16 As shown, in some embodiments of the present application, the battery assembly 20 includes at least two battery cells 21, and the at least two battery cells 21 are arranged along the first direction. Fig.15 Only one battery cell 21 is illustrated along the first direction.

[0205] Combination Figure 7 , Fig.16 and Fig.17 As shown, in some embodiments of the present application, the battery assembly 20 includes at least two battery cells 21, and the at least two battery cells 21 are arranged along a first direction.

[0206] At least two battery cells 21 are arranged along a first direction. When heat exchange of the battery cells 21 is required, the heat conductive member 40 can be disposed along the first direction so as to dissipate heat of at least two battery cells 21 in the battery assembly 20 respectively, thereby increasing the heat exchange speed of the heat conductive member 40 .

[0207] Combination Figure 4 , Figure 8 , Fig.10 , Fig.11 , Fig.15 and Fig.16 As shown, in some embodiments of the present application, along the first direction, the maximum dimension of the battery cell 21 is L, along the second direction, the maximum dimension of the battery cell 21 is H, and the L / H range is 0.5 to 6; the second direction intersects both the first direction and the horizontal plane.

[0208] Among them, when the battery cell 21 is Figure 4 or Fig.16 As shown, L / H has a maximum size ratio of 6. When the battery cell 21 is as shown in FIG. Fig.11 As shown, L / H has a minimum dimension ratio of 0.5.

[0209] When the L / H size ratio is greater than 6, the size of the battery cell 21 along the first direction is too large, which makes it inconvenient to install and reduces the support strength of the battery cell 21. When the L / H size ratio is less than 0.5, the size of the battery cell 21 along the second direction is too large, which makes it inconvenient to install and reduces the support strength of the battery cell 21.

[0210] 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 cell 21 can have different shapes to meet the requirements of different models of batteries 10.

[0211] The maximum size H of the battery cell 21 includes the size of the housing 211 and the size of the electrode terminal 214 protruding from the housing 211. The battery cell 21 is arranged according to the above-mentioned size ratio, which can maximize the power of the battery cell 21 while improving the supporting strength of the battery cell 21, and facilitate the installation of the battery cell 21.

[0212] Combination Figure 4 , Figure 8 , Fig.10 , Fig.11 , Fig.15 and Fig.16 As shown, in some embodiments of the present application, along the third direction, the maximum dimension of the battery cell 21 is D, wherein the L / D range is 1 to 30; the first direction, the second direction and the third direction intersect each other.

[0213] When the L / D ratio is greater than 30, the size of the battery cell 21 along the first direction will be too large, making it inconvenient to install and reducing the supporting strength of the battery cell 21. When the L / D ratio is less than 1, the size of the battery cell 21 along the first direction will be too small, thereby reducing the power of the battery cell 21.

[0214] 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 different values ​​of L / D, the battery cell 21 can have different shapes, thereby meeting the requirements of different models of batteries 10.

[0215] Among them, when the battery cell 21 is Figure 4 or Fig.16 As shown, L / D has a maximum dimension ratio of 30. When the battery cell 21 is Fig.11 When shown, L / D has a minimum size ratio of 1. The battery cells 21 are arranged according to the above size ratios, which can maximize the power of the battery cells 21 while improving the supporting strength of the battery cells 21 .

[0216] Fig.23 is a schematic diagram of the internal structure of the second part 32 provided in one embodiment of the present application; Fig.24 Schematic diagram of the enlarged structure of the D part provided in one embodiment of the present application. Figure 4 , Figure 8 , Fig.21 , Fig. 22 , Fig.23 and Fig.24 As shown, in some embodiments of the present application, the battery 10 further includes a baffle 321, which is arranged along the second direction opposite to the second surface 2121 of the battery cell 21 having the electrode terminal 214, and the interval 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.

[0217] Specifically, the baffle 321 may be a part of the structure of the box body 30 itself, or the baffle 321 is connected to the box body 30 and is disposed in the box body 30. The second direction may be a vertical direction.

[0218] Combination Fig.10 , Fig.11 , Fig.21 , Fig. 22 , Fig.23 and Fig.24 As shown, in some embodiments of the present application, the battery 10 further includes a baffle 321, which is arranged along the second direction opposite to the second surface 2121 of the battery cell 21 having the electrode terminal 214, and the interval 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.

[0219] When the distance between the electrode terminal 214 and the baffle 321 is less than 1.2 mm, the electrode terminal 214 may easily hit the baffle, thereby damaging the electrode terminal 214. When the distance between the electrode terminal 214 and the baffle 321 is greater than 25 mm, the size of the battery 10 may be too large, making it inconvenient to install the battery 10.

[0220] The baffle plate 321 is spaced 1.2 mm to 25 mm from the electrode terminal 214 , which can reduce the possibility that the baffle plate 321 collides with the electrode terminal 214 when the battery 10 collides along the second direction, thereby causing damage to the electrode terminal 214 .

[0221] It should be noted that the spacing between the baffle 321 and the electrode terminal 214 can be 1.2, 1.5, 1.8, 2, 3, 4, 5, 6, 7, 8...10...15...20...23, 24, 25 mm.

[0222] Combination Figure 1 , Figure 4 , Figure 8 , Fig.21 , Fig. 22 , Fig.23 and Fig.24As shown, 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.

[0223] Specifically, the electrode terminal 214 and the baffle 321 are arranged together along the second direction, and the baffle 321 is located below the battery cell 21, that is, the baffle 321 is arranged closer to the second portion 32 than the electrode terminal 214. The second direction may be a vertical direction, and the two electrode terminals 214 may be arranged together below the battery cell 21, or one of them may be arranged below the battery cell 21, and the other may be arranged above the battery cell 21. Or the electrode terminal 214 and the baffle 321 are arranged together along the second direction, and the baffle 321 is located above the battery cell 21, that is, the baffle 321 is arranged closer to the first portion 31 than the electrode terminal 214, wherein the two electrode terminals 214 may be arranged together above the battery cell 21, or one of them may be arranged below the battery cell 21, and the other may be arranged above the battery cell 10.

[0224] Combination Figure 1 , Fig.10 , Fig.11 , Fig.21 , Fig. 22 , Fig.23 and Fig.24 As shown, 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.

[0225] By arranging the baffle 321 below the electrode terminal 214 along the third direction, or above the electrode terminal 214 along the third direction, a reasonable arrangement can be performed according to the actual installation position.

[0226] Combination Figure 4 , Figure 7 , Figure 8 , Fig.21 and Fig. 22 As shown, in some embodiments of the present application, the electrode terminal 214 is arranged on a second surface 2121; the battery 10 also includes a support plate 311, and the battery cell 21 is fixedly connected to the support plate 311 through another second surface 2121 where the electrode terminal 214 is not arranged, and the second direction intersects with both the first direction and the horizontal plane.

[0227] Specifically, the support plate 311 may be a part of the structure of the box body 30 itself, or the support plate 311 is connected to the box body 30 and is disposed in the box body 30. The support plate 311 may be disposed in the first portion 31 or the second portion 32.

[0228] Combination Figure 4 , Figure 8 , Fig.21 and Fig. 22 As shown, two electrode terminals 214 can be disposed together along the second direction on one of the second surfaces 2121 of the battery cell 21 , 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 in the box 30 .

[0229] Combination Fig.10 , Fig.11 , Fig.21 and Fig. 22 As shown, the electrode terminal 214 is protrudingly provided on one of the second surfaces 2121 , and the other second surface 2121 on which the electrode terminal 214 is not protrudingly provided is fixedly connected to the support plate 311 .

[0230] The battery cell 21 is fixed in the box body 30 through the support plate 311 so as to install and fix the battery cell 21 .

[0231] Combination Figure 4 , Figure 8 , Fig.21 and Fig. 22 As shown, in some embodiments of the present application, the battery 10 also includes a heat conductor 40, which is arranged along the first direction, and the other second surface 2121 is fixedly connected to the support plate 311 through the first adhesive layer 61; the heat conductor 40 is thermally connected to the first surface 2111 through the second adhesive layer 62, and the thermal conductivity of the first adhesive layer 61 is less than or equal to the thermal conductivity of the second adhesive layer 62.

[0232] Specifically, the surface without the electrode terminal 214 is fixedly connected to the support plate 311 through the first adhesive layer 61 .

[0233] Combination Fig.10 , Fig.11 , Fig.21 and Fig. 22 As shown, in some embodiments of the present application, the second surface 2121 without the protruding electrode terminal 214 is fixedly connected to the support plate 311 through the first adhesive layer 61, and the heat conductive member 40 is heat conductively connected to the first surface 2111 through the second adhesive layer 62. The first adhesive layer 61 and the second adhesive layer 62 can respectively use a heat conductive polyurethane adhesive layer, and different amounts of heat conductive particles can be added therein to achieve different thermal conductivity coefficients.

[0234] Since 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 conductive member 40, the thermal conductivity of the first adhesive layer 61 is set to be less than or equal to the thermal conductivity of the second adhesive layer 62 to improve the more effective heat dissipation of the battery cell 21 through the thermal conductive member 40.

[0235] Combination Fig.21 and Fig. 22 As shown, in some embodiments of the present application, the ratio of the thermal conductivity of the first bonding layer 61 to the thermal conductivity of the second bonding layer 62 is in the range of 0.1-1.

[0236] Specifically, the above ratio ranges can effectively exchange heat for the battery cells 21 through the heat conducting member 40 .

[0237] It should be understood that when the ratio of the thermal conductivity of the first adhesive layer 61 to the thermal conductivity of the second adhesive layer 62 is less than 0.1, the thermal conductivity of the first adhesive layer 61 is poor, and the support plate 311 connected to the first adhesive layer 61 cannot transfer heat through one side of the first adhesive layer 61, thereby failing to exchange heat for the support plate 311. When the ratio of the thermal conductivity of the first adhesive layer 61 to the thermal conductivity of the second adhesive layer 62 is greater than 1, the thermal conductivity of the first adhesive layer 61 is stronger than that of the second adhesive layer 62, and the ability of the battery cell 21 to dissipate heat through the heat-conducting member 40 is weakened, resulting in poor heat dissipation of the battery cell 21.

[0238] It should be noted that the ratio of the thermal conductivity of the first bonding layer 61 to the thermal conductivity of the second bonding layer 62 may be 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, ..., 1.

[0239] Combination Figures 1 to 24 As shown, the second aspect of the present application proposes an electric device 1, comprising a battery 10 of any one of the above items, and the battery 10 is used to provide electric energy to drive the electric device 1 to move.

[0240] Fig.25 1 is a schematic diagram of the distribution structure of the battery 10 on the power-consuming device 1 provided in one embodiment of the present application. Figures 1 to 25 As shown, in some embodiments of the present application, when the length direction of the battery 10 is different from the moving direction of the electric device 1 , the first direction is the moving direction of the electric device 1 .

[0241] In some embodiments, the length direction of the battery 10 may be perpendicular to the travel direction of the electric device 1. For example, one or more batteries 10 may be arranged in the travel direction of the electric device 1. When multiple batteries 10 are arranged, the length direction of at least one battery 10 is perpendicular to the travel direction of the electric device 1. In this embodiment, the first direction is the travel direction of the electric device 1. That is, in the battery 10 whose length direction is perpendicular to the travel direction of the electric device 1, the battery assembly 20 and the heat conductor 40 are arranged along the width direction of the battery 10, which is consistent with the travel direction of the electric device 1.

[0242] The electric device 1 of the present application may be an electric vehicle, an electric toy, an electric tool, an electric vehicle, a ship, a spacecraft, etc. For example, the spacecraft includes an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0243] The first direction is set as the moving direction of the electrical equipment 1. When the electrode terminal 214 is arranged on the second surface 2121, since the two second surfaces 2121 are arranged relatively along the second direction and the second direction intersects with the first direction, that is, the electrode terminal 214 will not be arranged at the end of the moving direction of the electrical equipment 1. When the electrical equipment 1 is collided along the moving direction, the electrode terminal 214 will not be collided, thereby reducing the damage to the electrode terminal 214, so that the battery 10 can supply power normally. When the electrode terminal 214 is arranged on the first surface 2111, since the first surface 2111 is the surface with the largest area, the electrode terminal 214 occupies a small proportion on the first surface 2111. When the electrical equipment 1 is collided, it is not easy to collide with the electrode terminal 214, thereby reducing the damage to the electrode terminal 214, so that the battery 10 can supply power normally.

[0244] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

[0245] Combination Figure 1 , Figure 4 , Figure 5 , Figure 7 , Figure 8 , Figures 19 to 24As shown, in one embodiment of the present application, the electric device 1 includes a battery 10, and the battery 10 is used to provide electric energy to drive the electric device 1 to move. The battery 10 includes a box 30 and a plurality of battery assemblies 20 arranged in the box 30, and the box 30 includes a first part 31 and a second part 32, and the first part 31 and the second part 32 are enclosed to form a space for accommodating the battery assembly 20. The plurality of battery assemblies 20 are respectively arranged along the first direction and arranged along the third direction. The battery assembly 20 includes a plurality of battery cells 21, the length direction of the battery cell 21 is arranged along the first direction, the height direction of the battery cell 21 is arranged along the second direction, and the width direction of the battery cell 21 is arranged along the third direction. The battery cell 21 includes two third surfaces 2112 arranged oppositely along the first direction, two second surfaces 2121 arranged oppositely along the second direction, and two first surfaces 2111 arranged oppositely along the third direction, and the first surface 2111 is the surface with the largest area of ​​the battery cell 21. Among them, the first direction is the moving direction of the electric device 1, the length direction of the battery 10 is parallel to the moving direction of the electric device 1, the second direction is the vertical direction, and the third direction is the lateral direction of the moving direction of the electric device 1.

[0246] The battery cell 21 includes an electrode assembly 213, which includes a main body 2131 and a tab 2132 protruding from the main body 2131, and the tab 2132 is electrically connected to the electrode terminal 214. Along the third direction, the projections of the heat conducting member 40 and the main body 2131 at least partially overlap and have an overlapping area. Along the second direction, the size of the main body 2131 is L1, the size of the heat conducting member 40 is L2, the size of the overlapping area is L3, 0.5≤L2 / L1≤1.5, 0.5≤L3 / L1≤1.

[0247] The battery cell 21 includes two electrode terminals 214 with opposite polarities; the two electrode terminals 214 are arranged on a second surface 2121. The battery cell 21 also includes a pressure relief mechanism 215; the pressure relief mechanism 215 and the two electrode terminals 214 are arranged on the same second surface 2121. Along the first direction, the maximum size of the battery cell 21 is L, and along the second direction, the maximum size of the battery cell 21 is H, 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, wherein the L / D range value is 1 to 30. The battery 10 also includes a baffle 321, which is arranged on the second part 32. The baffle 321 is arranged opposite to the second surface 2121 of the battery cell 21 on which the electrode terminal 214 is arranged along the second direction, the electrode terminal 214 is located below the battery cell 21, and the baffle 321 is located below the electrode terminal 214, and the spacing size between the electrode terminal 214 and the baffle 321 is 1.2mm to 25m.

[0248] A plurality of heat-conducting members 40 are also provided in the box body 30, and the heat-conducting members 40 are arranged along the first direction, and the plurality of heat-conducting members 40 are arranged along the third direction. Heat-conducting members 40 are respectively provided on both sides of the battery assembly 20 along the third direction, and the first surfaces 2111 on both sides along the third direction are respectively connected to the heat-conducting members 40 by heat conduction. A heat exchange medium channel is provided in the heat-conducting member 40. The battery 10 also includes a current collector 50, which is extended along the third direction and is fluidically connected to the plurality of heat-conducting members 40. There are two current collectors 50, and the two current collectors 50 are jointly provided at one end of the travel direction of the electrical equipment 1, and are arranged at intervals along the second direction.

[0249] A support plate 311 is also provided in the box body 30, and the support plate 311 is provided in the first part 31. The battery cell 21 is fixedly connected to the support plate 311 through the second surface 2121 without the electrode terminal 214. The second surface 2121 without the electrode terminal 214 is fixedly connected to the support plate 311 through the first adhesive layer 61; the heat conductive member 40 is heat-conductively connected to the first surface 2111 through the second adhesive layer 62, and the ratio of the thermal conductivity of the first adhesive layer 61 to the thermal conductivity of the second adhesive layer 62 is in the range of 0.1 to 1.

[0250] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery, characterized in that: include: A battery assembly (20), the battery assembly (20) comprising at least one battery cell (21), the battery assembly (20) being arranged along a first direction, the first direction being the length direction of the battery (10) or the running direction of an electric device (1) having the battery (10); The battery cell (21) comprises a plurality of surfaces, wherein the plurality of surfaces comprises a first surface (2111) having the largest area; the plurality of surfaces further comprises two second surfaces (2121) arranged opposite to each other, wherein the two second surfaces are respectively connected to the first surface; the battery cell (21) further comprises an electrode terminal, wherein the electrode terminal is arranged on the first surface or at least one of the second surfaces (2121); the battery further comprises a heat conducting member (40), wherein the heat conducting member (40) is arranged along the first direction; each of the battery cells (21) of the battery assembly (20) is heat-conductively connected to the heat conducting member (40) at least via the first surface (2111), wherein the two second surfaces (2121) are arranged opposite to each other along a second direction; and the second direction intersects with the first direction.

2. The battery according to claim 1, characterized in that The first surface (2111) intersects with a horizontal plane.

3. The battery according to claim 1, characterized in that The second direction intersects with or is parallel to the horizontal plane.

4. The battery according to claim 1, characterized in that It comprises at least two battery assemblies (20); along a third direction, two sides of the heat conducting member (40) are respectively heat-conductively connected to the two battery assemblies (20); and the third direction intersects with both the first direction and the first surface (2111).

5. The battery according to claim 1, characterized in that The length direction of the battery (10) is parallel to or intersects with the travel direction of the electrical device (1).

6. The battery according to claim 1, characterized in that A heat exchange medium channel is provided in the heat conducting member (40).

7. The battery according to claim 6, characterized in that The battery (10) comprises a plurality of the heat-conducting members (40), wherein the plurality of the heat-conducting members (40) are arranged along a third direction, and the third direction intersects both the first direction and the first surface (2111).

8. The battery according to claim 7, characterized in that Along the third direction, the heat conducting members (40) are respectively provided on both sides of the battery assembly (20); the battery assembly (20) is thermally connected to the heat conducting members (40) on both sides.

9. The battery according to claim 7, characterized in that Along the third direction, the battery cell (21) comprises two opposite first surfaces (2111), and the two first surfaces (2111) of the battery cell (21) are respectively thermally connected to one of the heat conducting members (40).

10. The battery according to claim 1, characterized in that The battery cell (21) comprises an electrode assembly (213), wherein the electrode assembly (213) comprises a main body (2131) and a pole ear (2132) protruding from the main body (2131), wherein the pole ear (2132) is electrically connected to the electrode terminal (214), and along a third direction, the projections of the heat conducting member (40) and the main body (2131) at least partially overlap and have an overlapping area, and the third direction intersects with both the first direction and the first surface (2111).

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

12. The battery according to claim 11, characterized in that Along the second direction, the size of the overlapping area is L3, 0.5≤L3 / L1≤1.

13. The battery according to claim 1, characterized in that The battery (10) further comprises a current collecting member (50), wherein the current collecting member (50) is in fluid communication with the plurality of heat conducting members (40); The current collecting component (50) is provided at one end of the heat conducting component (40) located in the first direction, or the current collecting components (50) are provided at both ends of the heat conducting component (40) located in the first direction.

14. The battery according to claim 13, characterized in that There are two current collecting members (50), and the two current collecting members (50) are arranged at one end of the heat conducting member (40) located in the first direction. The two current collecting members (50) are arranged along a second direction, and the second direction intersects with both the first direction and a horizontal plane.

15. The battery according to any one of claims 1 to 3, characterized in that The electrode terminal (214) comprises two electrode terminals (214) with opposite polarities; the two electrode terminals (214) are arranged on one second surface (2121), or the two electrode terminals (214) are respectively arranged on two second surfaces (2121).

16. The battery according to claim 15, characterized in that The battery cell (21) further comprises a pressure relief mechanism (215); the pressure relief mechanism (215) and at least one of the electrode terminals (214) are arranged on the same second surface (2121), or the pressure relief mechanism (215) and the electrode terminal (214) are arranged on two second surfaces (2121) respectively.

17. The battery according to any one of claims 1 to 3, characterized in that The electrode terminal (214) is disposed on the first surface (2111).

18. The battery according to claim 17, characterized in that The battery cell (21) comprises the first surface (2111) and a fourth surface arranged opposite to the first surface, the first surface (2111) and the fourth surface being arranged opposite to each other along a third direction, the third direction intersecting with both the first direction and the first surface (2111); a recess is provided at the edge of the fourth surface; the first surface (2111) is used for arranging the electrode terminal (214); the electrode terminal (214) is arranged protruding from the first surface (2111) in the third direction and corresponding to the recess.

19. The battery according to any one of claims 1 to 3, characterized in that The battery cell (21) comprises an electrode assembly (213); the electrode assembly (213) is a wound structure and is flat; the outer surface of the electrode assembly (213) comprises two flat surfaces, and the two flat surfaces face each other along a third direction; Alternatively, the electrode assembly (213) is a laminated structure, and the first electrode sheet, the diaphragm, and the second electrode sheet of the electrode assembly (213) are laminated along a third direction; The third direction intersects both the first direction and the first surface (2111).

20. The battery according to any one of claims 1 to 3, characterized in that The battery assembly (20) comprises at least two battery cells (21), and the at least two battery cells (21) are arranged along the first direction.

21. The battery according to any one of claims 1 to 3, characterized in that Along the first direction, the maximum size of the battery cell (21) is L, and along the second direction, the maximum size of the battery cell (21) is H, with L / H ranging from 0.5 to 6; the second direction intersects both the first direction and the horizontal plane.

22. The battery according to claim 21, characterized in that Along the third direction, the maximum dimension of the battery cell (21) is D, wherein the L / D range is 1 to 30; the first direction, the second direction and the third direction intersect each other.

23. The battery according to claim 3, characterized in that The battery (10) further comprises a baffle (321), the baffle (321) being arranged along a second direction opposite to the second surface (2121) of the battery cell (21) on which the electrode terminal (214) is provided, the interval between the electrode terminal (214) and the baffle (321) being 1.2 mm to 25 mm, and the second direction intersects both the first direction and the horizontal plane.

24. The battery according to claim 23, characterized in that 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).

25. The battery according to claim 1, characterized in that The electrode terminal (214) is arranged on one of the second surfaces (2121); the battery (10) further comprises 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 arranged; and the second direction intersects both the first direction and the horizontal plane.

26. The battery according to claim 25, characterized in that It also includes a heat conductive member (40), the heat conductive member (40) is arranged along the first direction, and the other second surface (2121) is fixedly connected to the support plate (311) via a first adhesive layer (61); the heat conductive member (40) is heat-conductively connected to the first surface (2111) via a second adhesive layer (62), and the thermal conductivity of the first adhesive layer (61) is less than or equal to the thermal conductivity of the second adhesive layer (62).

27. The battery according to claim 26, characterized in that The ratio of the thermal conductivity of the first adhesive layer (61) to the thermal conductivity of the second adhesive layer (62) is in the range of 0.1 to 1.

28. An electrical equipment, characterized in that: It comprises a battery (10) as claimed in any one of claims 1 to 27, wherein the battery (10) is used to provide electrical energy to drive the electrical device (1) to move.

29. The electrical equipment according to claim 28, characterized in that: When the length direction of the battery (10) is different from the running direction of the electric device (1), the first direction is the running direction of the electric device (1).

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