Batteries and power-consuming devices

Abstract

The present application belongs to the field of battery technology, and specifically discloses a battery and a power consuming device, the battery including a housing and a battery assembly, the battery assembly is accommodated in the housing, the battery assembly includes at least one battery cell, the battery assembly is arranged along a first direction, the first direction is the longitudinal direction of the battery or the running direction of a power consuming device having the battery, the battery cell has a first surface and a second surface, the first surface is provided with an electrode terminal, the second surface is connected to the housing, the second surface intersects with a third direction, and the third direction intersects with both the first direction and a horizontal plane. According to the battery of the present application, the battery cell has a first surface and a second surface, the second surface is arranged to intersect with the third direction, and the electrode terminal is arranged on the first surface and the second surface is connected to the housing, so that the connecting surface between the battery cell and the housing does not have the electrode terminal, and it is easy to fully expose the electrode terminal to the outside after the housing is opened, which improves the convenience of repair and inspection of the battery.

Description

[Technical field]

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

[0002] With the development of new energy, more and more fields are adopting new energy as power. Power batteries have the advantages of high energy density, cyclic charging, safety and environmental friendliness, and are therefore widely used in fields such as new energy automobiles, consumer electronics, and energy storage systems.

[0003] A power battery generally includes a housing and a battery cell. The battery cell is disposed in the housing and fixed to the housing by a viscose fastening method. For battery cells with exposed electrode terminals on the top and bottom, the viscose fastening method is not convenient for repair and inspection of the battery. Summary of the Invention

[0004] In view of the above problems, the present application provides a battery and a power consuming device that solves the problem that the conventional battery repair and detection is not convenient.

[0005] A first aspect of the present application proposes a battery, the battery comprising: A housing and a battery assembly housed in the housing, including at least one battery cell, and installed along a first direction, wherein the first direction is a longitudinal direction of the battery or a traveling direction of a power consumption device having the battery, the battery cell has a first surface and a second surface, an electrode terminal is provided on the first surface, the second surface is connected to the housing, the second surface intersects with a third direction, and the third direction intersects with both the first direction and a horizontal plane.

[0006] According to the battery of the present application, the battery cell has a first surface and a second surface, and is arranged so that the second surface intersects with a third direction (the third direction intersects with both the first direction and the horizontal direction), wherein an electrode terminal is arranged on the first surface and the second surface is connected to the housing, so that the connection surface between the battery cell and the housing does not have an electrode terminal, and it becomes easy for the electrode terminal to be sufficiently exposed to the outside after the housing is opened, which facilitates repair and detection of the battery without separating the battery cell and the housing after the housing is opened, and improves the convenience of repair and detection of the battery.

[0007] In some embodiments of the present application, the longitudinal direction of the battery is parallel to or intersects with the running direction of the power consumer device. By arranging the longitudinal direction of the battery parallel to or intersecting with the running direction of the power consumer device, the convenience of arranging the battery in the power consumer device is improved.

[0008] In some embodiments of the present application, the first surface is disposed opposite the second surface along the third direction, and the battery cell further has a third surface, the third surface being the surface with the largest area of ​​the battery cell, the third surface being disposed along the third direction and intersecting the horizontal plane, and the third surface being connected to the first surface and the second surface. In this embodiment, the first surface and the second surface are disposed opposite to each other in the third direction, and when repairing or inspecting the battery, the housing is opened, and the second surface of the battery cell is connected to the housing of the battery, and the electrode terminals on the first surface can be exposed to the outside, which facilitates repairing and inspecting the battery without separating the battery cell and the housing after opening the housing, and further improves the convenience of repairing and inspecting the battery. In addition, the third surface is the surface with the largest area, and the area of ​​the second surface is smaller than the third surface, so that the housing can connect more battery cells per unit area, thereby improving the energy density of the battery.

[0009] In some embodiments of the present application, the number of the third surfaces is two, the two third surfaces are arranged opposite to each other along the first direction, the battery cell includes two electrode terminals with opposite polarities, and the two electrode terminals with opposite polarities are both provided on the first surface. In this embodiment, the battery cell is arranged with two third surfaces, the two third surfaces are both surfaces with the largest areas, the first surface and the second surface are arranged opposite to each other in the third direction, and the two third surfaces are arranged opposite to each other in the first direction, which further improves the convenience of the arrangement of the battery cell in the battery and meets the installation needs of different batteries.

[0010] In some embodiments of the present application, the number of the third surfaces is two, the two third surfaces are arranged opposite to each other along the second direction, the second direction, the first direction and the third direction intersect two by two, the battery cell includes two electrode terminals with opposite polarities, and the two electrode terminals with opposite polarities are both arranged on the first surface. In this embodiment, the battery cell is arranged with two third surfaces, the two third surfaces are both the surfaces with the largest areas, the first surface and the second surface are arranged opposite to each other in the third direction, and the two third surfaces are arranged opposite to each other in the second direction, which further improves the convenience of the arrangement of the battery cell in the battery and meets the installation needs of different batteries.

[0011] In some embodiments of the present application, the number of the third surfaces is one, the battery cell includes two electrode terminals with opposite polarities, one of the two electrode terminals with opposite polarities is provided on the first surface, and the case of the battery cell constitutes the other of the two electrode terminals with opposite polarities. In this embodiment, the battery cell is provided with one third surface, and the one third surface is the surface with the largest area, and the first surface and the second surface are provided opposite to each other in a third direction, which further improves the convenience of the arrangement of the battery cell in the battery and meets the installation needs of different batteries.

[0012] In some embodiments of the present application, the battery cell further has a third surface, the third surface being the surface of the battery cell with the largest area, the third surface being arranged along the third direction and intersecting with the horizontal plane, and the first surface, the second surface and the third surface intersecting with each other two by two. In this embodiment, by arranging the first surface, the second surface and the third surface to intersect with each other two by two, the second surface is connected to the housing, and the electrode terminal is provided on the first surface, which facilitates repair and detection of the battery without separating the battery cell and the housing after opening the housing.

[0013] In some embodiments of the present application, the number of the first surfaces is two, the two first surfaces are disposed opposite to each other along the first direction, and the battery cell includes two electrode terminals having opposite polarities; Here, the two electrode terminals having opposite polarities are both provided on one of the first surfaces, or the two electrode terminals having opposite polarities are respectively provided on two of the first surfaces.

[0014] In this embodiment, two first surfaces are provided, and the two first surfaces are provided opposite to each other in a first direction. Two electrode terminals having opposite polarities may be provided on one first surface at the same time, or may be provided on the two first surfaces respectively, which satisfies the convenience of battery repair and detection, improves the convenience of electrode terminal arrangement, and meets the demand for battery diversity.

[0015] In some embodiments of the present application, the number of the first surfaces is two, the two first surfaces are disposed opposite to each other along the second direction, the second direction, the first direction and the third direction intersect two by two, and the battery cell includes two electrode terminals with opposite polarities; Here, the two electrode terminals having opposite polarities are both provided on one of the first surfaces, or the two electrode terminals having opposite polarities are respectively provided on two of the first surfaces.

[0016] In this embodiment, two first surfaces are provided, and the two first surfaces are provided opposite to each other in a second direction. Two electrode terminals of opposite polarity may be provided on one first surface at the same time, or may be provided on the two first surfaces respectively, which meets the convenience of battery repair and detection, further improves the convenience of electrode terminal arrangement, and further meets the demand for battery diversity.

[0017] In some embodiments of the present application, the second surface is the surface of the battery cell with the largest area, the area of ​​the first surface is smaller than the area of ​​the second surface, the first surface is arranged along the first direction and intersects with the second surface, the battery cell includes two of the first surfaces, the two first surfaces are arranged opposite to each other along the second direction, the second direction, the first direction and the third direction intersect with each other two by two, The battery cell includes two electrode terminals having opposite polarities, and the two electrode terminals having opposite polarities are both provided on the same first surface, or the two electrode terminals having opposite polarities are respectively provided on two of the first surfaces.

[0018] In this embodiment, the second surface is the surface with the largest area, and the two first surfaces respectively intersect with the second surface, and the two electrode terminals with opposite polarities may be simultaneously installed on one first surface, or may be respectively installed on the two first surfaces, which not only satisfies the convenience of battery repair and detection, but also further improves the convenience of electrode terminal arrangement and further meets the demand for battery diversity.

[0019] In some embodiments of the present application, the second surface is the surface of the battery cell with the largest area, the area of ​​the first surface is smaller than the area of ​​the second surface, the first surface is arranged along the second direction and intersects with the second surface, the second direction, the first direction and the third direction intersect with each other two by two, the battery cell includes two of the first surfaces, and the two first surfaces are arranged opposite to each other along the first direction; The battery cell includes two electrode terminals having opposite polarities, and the two electrode terminals having opposite polarities are both provided on the same first surface, or the two electrode terminals having opposite polarities are respectively provided on two of the first surfaces.

[0020] In this embodiment, the second surface is the surface with the largest area, and the two first surfaces respectively intersect with the second surface, and the two electrode terminals with opposite polarities may be simultaneously installed on one first surface, or may be respectively installed on the two first surfaces, which not only satisfies the convenience of battery repair and detection, but also further improves the convenience of electrode terminal arrangement and further meets the demand for battery diversity.

[0021] In some embodiments of the present application, the first surface is the surface of the battery cell with the largest area, and the electrode terminals are disposed on the first surface, which can provide sufficient operating space for battery repair and inspection, and further improve the convenience of battery repair and inspection.

[0022] In some embodiments of the present application, the battery cell includes the first surface and a fourth surface arranged opposite to the first surface, the first surface and the fourth surface are arranged opposite to each other along a first direction, a recess is provided on an edge of the fourth surface, the first surface is for mounting the electrode terminal, and the electrode terminal is arranged to protrude from the first surface in the second direction and corresponds to the recess.

[0023] In this embodiment, the first surface is the surface with the largest area, and a fourth surface is provided and is disposed opposite the first surface in a first direction, so as to provide sufficient operating space for battery repair and inspection, and to meet the demand for battery diversity.

[0024] In some embodiments of the present application, the battery cell includes the first surface and a fourth surface arranged opposite to the first surface, the first surface and the fourth surface are arranged opposite to each other along a second direction, the second direction, the first direction and the third direction intersect two by two, a recess is provided on an edge of the fourth surface, the first surface is for mounting the electrode terminal, and the electrode terminal is arranged to protrude from the first surface in the second direction and corresponds to the recess.

[0025] In this embodiment, the first surface is the surface with the largest area, and a fourth surface is provided and is disposed opposite the first surface in the second direction, so as to provide sufficient operating space for battery repair and inspection, and further meet the demand for battery diversity.

[0026] In some embodiments of the present application, the battery further includes a thermally conductive member, the thermally conductive member is disposed along the first direction, and the thermally conductive member is thermally conductively connected to at least the surface of the battery cell that has the largest area. In this embodiment, the thermally conductive member is thermally connected to the surface of the battery cell that has the largest area, thereby improving the heat exchange efficiency between the battery cell and the thermally conductive member and reducing the safety problem of the battery caused by poor heat dissipation.

[0027] In some embodiments of the present application, the battery includes at least two battery assemblies, and both sides of the thermal conductive member are thermally conductively connected to two of the battery assemblies along the second direction, and the second direction, the first direction and the third direction intersect two by two. In this embodiment, the battery assemblies installed in the housing are all thermally conductively connected to the thermal conductive member, which further ensures sufficient heat dissipation of the battery assemblies and further reduces safety issues of the battery caused by poor heat dissipation.

[0028] In some embodiments of the present application, the battery includes a plurality of the thermal conductive members, the plurality of the thermal conductive members are arranged along a second direction, and the second direction, the first direction and the third direction intersect with each other two by two. In this embodiment, by installing a plurality of the thermal conductive members, the heat exchange capacity for the battery cells can be further improved, the battery can be maintained within a relatively safe temperature range, and safety problems caused by poor heat dissipation can be further reduced.

[0029] In some embodiments of the present application, the heat conductive members are provided on both sides of the battery assembly along the second direction, and the battery assembly is thermally connected to the heat conductive members on both sides. In this embodiment, both sides of the battery assembly are thermally connected to the heat conductive members, which can further improve the heat dissipation ability of the battery assembly, maintain the temperature of the battery within a relatively safe temperature range, and further reduce safety issues caused by poor heat dissipation.

[0030] In some embodiments of the present application, along the second direction, the battery cell includes two opposing third surfaces, the third surfaces being the surface with the largest area of ​​the battery cell, and the two third surfaces of the battery cell are thermally conductively connected to one of the thermal conductive members, respectively. In this embodiment, the two third surfaces with the largest area are provided, and the two third surfaces are thermally conductively connected to one of the thermal conductive members, thereby further enhancing the heat exchange efficiency between the battery cell and the thermal conductive member, thereby improving the heat dissipation performance of the battery cell, and further reducing the safety hazard of the battery caused by excessive temperature.

[0031] In some embodiments of the present application, the battery cell includes an electrode assembly, the electrode assembly includes a body and a tab protruding from the body, the tab is electrically connected to the electrode terminal, the projections of the heat conducting member and the body at least partially overlap along a second direction, and the first direction, the second direction and the third direction intersect two by two. In this embodiment, by arranging the heat conducting member and the body to at least partially overlap along the second direction and having an overlapping area, the body can effectively exchange heat with the heat conducting member, thereby improving the heat exchange effect of the battery cell.

[0032] In some embodiments of the present application, along the third direction, a size of the body portion is L1 and a size of the heat conducting member is L2, where 0.5≦L2 / L1≦1.5.

[0033] In this embodiment, by setting the range value of L2 / L1 within the interval [0.5, 1.5], the space occupied by the thermal conductive member in the third direction can be reduced, thereby further increasing the space utilization rate of the battery.

[0034] In some embodiments of the present application, along the third direction, a size of the overlapping region is L3, where 0.5≦L3 / L1≦1.

[0035] In this embodiment, by setting the size of the overlapping area in the third direction, the heat exchange area between the heat conduction member and the main body can be rationally set, and the heat exchange effect of the main body by the heat conduction member can be significantly reinforced.

[0036] In some embodiments of the present application, the heat conducting member has a passage for accommodating a heat exchange medium. In this embodiment, the battery cell performs heat transfer with the heat exchange medium in the passage through the heat conducting member, and the heat exchange medium can flow through the passage. This heat exchange method has high heat exchange efficiency and a simple structure.

[0037] In some embodiments of the present application, the battery further comprises a current collecting member, the current collecting member in fluid communication with the thermally conductive member; Here, the current collecting member is provided at one end of the heat conducting member located in the first direction, or the current collecting member is provided at each of both ends of the heat conducting member located in the first direction.

[0038] In this embodiment, the current collecting member is installed to realize the concentration of the heat exchange medium in the heat conducting member, and the number of members can be reduced, thereby improving the space utilization rate in the housing. In addition, when the battery is pushed or impacted in the second direction, the installation position of the current collecting member can avoid the push or impact, and reduce the possibility of the current collecting member being damaged, so that the heat exchange medium can fully dissipate the heat of the battery cells, and further reduce the safety issue of the battery caused by the high temperature.

[0039] In some embodiments of the present application, the number of current collecting members is two, the two current collecting members are provided at one end of the heat conducting member located in the first direction, and the two current collecting members are arranged along the third direction. In this embodiment, by providing two current collecting members, the current collecting performance for the heat exchange medium is improved, so that the heat exchange medium has a good flow rate, and the heat exchange ability of the battery cell by the heat exchange medium can be further improved. In addition, by providing two current collecting members jointly at one end of the first direction and arranging them along the third direction, the space occupied by the current collecting members in the battery along the first direction can be effectively reduced, thereby facilitating the installation of other structures in the battery.

[0040] In some embodiments of the present application, the battery cell further includes a pressure relief mechanism, the pressure relief mechanism being disposed on one surface of the battery cell, and when the battery cell experiences thermal runaway, the pressure relief mechanism can timely release the internal pressure of the battery cell to avoid safety issues such as explosion of the battery cell.

[0041] In some embodiments of the present application, the pressure relief mechanism is provided on the first surface or the second surface, and the installation position of the pressure relief mechanism in this embodiment can meet the needs of different battery cell types and further improve the safety performance of the battery.

[0042] In some embodiments of the present application, the battery assembly includes at least two battery cells, and the at least two battery cells are aligned along the first direction. In this embodiment, the at least two battery cells are aligned along the first direction to facilitate layout of the battery cells inside the housing.

[0043] In some embodiments of the present application, the battery cell includes an electrode assembly, the electrode assembly has a wound structure and is flat, an outer surface of the electrode assembly includes two flat surfaces, and the two flat surfaces face each other along a second direction; Or, the electrode assembly has a stacked structure, and the first plate, the separator and the second plate of the electrode assembly are stacked along a second direction; The second direction, the first direction and the third direction intersect two by two.

[0044] In this embodiment, the electrode assembly is arranged in a wound structure and flat, and the outer surface of the electrode assembly includes two flat surfaces, the two flat surfaces facing each other along the second direction, or the electrode assembly is arranged in a stacked structure, thereby reducing the space occupied by the electrode assembly in the first direction and facilitating the layout and installation of other components in the battery in the first direction.

[0045] In some embodiments of the present application, the maximum size of the battery cell along the first direction is L, and the maximum size of the battery cell along the second direction is D, and the second direction, the first direction and the third direction intersect two by two, where a range value of L / D is 1 to 30. In the present embodiment, the power capacity of the battery cell can be maximized by setting the sizes of the battery cell in the first direction and the second direction.

[0046] In some embodiments of the present application, the maximum size of the battery cells along the first direction is L, and the maximum size of the battery cells along the third direction is H, and the range value of L / H is 0.5 to 6. In the present embodiment, the battery cells are installed according to the above size ratio, thereby maximizing the power capacity of the battery cells.

[0047] In some embodiments of the present application, the housing includes a first part and a second part, the first part and the second part are connected in a detachable manner, the number of the second surfaces is at least one, and at least one of the second surfaces is glued to the first part or the second part. In this embodiment, the second surface is glued and fixed to the first part or the second part of the housing, which improves the convenience in the assembly process. In addition, the connection strength of the glued fixation is high, which can effectively guarantee the stability of the battery cell in the housing.

[0048] In some embodiments of the present application, the number of the second surfaces is two, the two second surfaces are disposed opposite to each other, the first portion is adhered to one of the second surfaces, and the second portion is adhered to the other of the second surfaces. In this embodiment, the number of the second surfaces is set to two, and the two second surfaces are adhered and fixed to the first portion and the second portion of the housing, respectively, thereby further improving the connection strength between the battery cell and the housing and further improving the stability of the battery cell in the housing.

[0049] In some embodiments of the present application, the second surface is fixedly connected to the first portion and / or the second portion via a first adhesive layer, the battery further includes a thermally conductive member, the thermally conductive member is thermally conductively connected to the surface of the battery cell having the largest area via a second adhesive layer, and the thermal conductivity coefficient of the first adhesive layer is equal to or less than the thermal conductivity coefficient of the second adhesive layer. In this embodiment, the first adhesive layer is used to connect the second surface to the housing, and the second adhesive layer is used to thermally conductively connect the surface of the battery cell having the largest area to the thermally conductive member, so that the thermal conductivity coefficient of the first adhesive layer is set to be equal to or less than the thermal conductivity coefficient of the second adhesive layer to ensure more effective heat dissipation of the battery cell through the thermally conductive member.

[0050] In some embodiments of the present application, the range of the ratio between the thermal conductivity coefficient of the first adhesive layer and the thermal conductivity coefficient of the second adhesive layer is 0.1 to 1. In the present embodiment, any of the above ratio ranges can effectively dissipate heat from the battery cell via the thermal conductive member.

[0051] In some embodiments of the present application, the battery further includes a baffle, the baffle is disposed along the third direction facing the first surface on which the electrode terminals of the battery cells are provided, and the distance between the electrode terminals and the baffle is 1.2 mm to 25 mm. In this embodiment, by setting the distance between the baffle and the electrode terminals to 1.2 mm to 25 mm, damage to the electrode terminals due to impact between the baffle and the electrode terminals can be prevented when the battery is impacted along the second direction.

[0052] A second aspect of the present application proposes a power consumer device, comprising a battery as described above, said battery being used to provide electrical energy to drive the running of said power consumer device.

[0053] In some embodiments of the present application, when a longitudinal direction of the battery and a direction of travel of the power consumer are different, the first direction is the direction of travel of the power consumer.

[0054] In this embodiment, the first direction is set to the traveling direction of the power consuming device, and the third direction intersects with both the first direction and the horizontal direction, respectively. The battery cells located inside the battery casing have a first surface and a second surface, an electrode terminal is installed on the first surface, and the second surface is connected to the casing. By setting the first direction, the installation and layout of the battery in the power consuming device is facilitated, and the arrangement method of the battery cells inside the casing can be adjusted to meet the usage needs of different power consuming devices.

[0055] The above description is only an outline of the technical solution of the present application, which can be implemented in accordance with the content of the specification, so as to make the technical means of the present application more clearly understandable, and to make the above and other objectives, features and advantages of the present application more obvious and understandable, the following particularly cites specific embodiments of the present application to describe them. [Brief description of the drawings]

[0056] [Figure 1] 1 is a schematic structural diagram of a vehicle according to one embodiment of the present application; [Diagram 2] FIG. 1 illustrates an exploded structural schematic diagram of a battery according to one embodiment of the present application. [Diagram 3] FIG. 1 illustrates a structural schematic diagram of a battery assembly according to one embodiment of the present application. [Figure 4] FIG. 1 illustrates an exploded structural schematic diagram of a battery cell according to one embodiment of the present application. [Diagram 5] FIG. 1 illustrates an exploded structural schematic diagram of a battery according to one embodiment of the present application. [Figure 6] FIG. 1 illustrates a structural schematic diagram of a battery assembly according to one embodiment of the present application. [Figure 7] 7 is a structural schematic diagram of a battery cell in the battery assembly shown in FIG. 6. [Figure 8] FIG. 1 illustrates a structural schematic diagram of a battery assembly according to one embodiment of the present application. [Figure 9] FIG. 9 is a structural schematic diagram of a battery cell in the battery assembly shown in FIG. 8. [Figure 10] FIG. 1 illustrates a structural schematic diagram of a battery assembly according to one embodiment of the present application. [Figure 11] FIG. 1 illustrates a structural schematic diagram of a battery assembly according to one embodiment of the present application. [Figure 12] FIG. 12 is a structural schematic diagram of a battery cell in the battery assembly shown in FIGS. 10 and 11 . [Figure 13] FIG. 1 illustrates a structural schematic diagram of a battery assembly according to one embodiment of the present application. [Figure 14] FIG. 14 is a structural schematic diagram of a battery cell in the battery assembly shown in FIG. 13. [Figure 15] FIG. 1 illustrates a structural schematic diagram of a battery assembly according to one embodiment of the present application. [Figure 16] 16 is a structural schematic diagram of a battery cell in the battery assembly shown in FIG. 15. [Figure 17] FIG. 1 illustrates a structural schematic diagram of a battery assembly according to one embodiment of the present application. [Figure 18] 18 is a structural schematic diagram of a battery cell in the battery assembly shown in FIG. 17. [Figure 19] FIG. 1 illustrates a structural schematic diagram of a battery assembly according to one embodiment of the present application. [Figure 20] FIG. 20 is a structural schematic diagram of a battery cell in the battery assembly shown in FIG. 19. [Figure 21] FIG. 1 illustrates a structural schematic diagram of a battery assembly according to one embodiment of the present application. [Figure 22] FIG. 22 is a structural schematic diagram of a battery cell in the battery assembly shown in FIG. 21. [Diagram 23] FIG. 1 illustrates a structural schematic diagram of a battery assembly according to one embodiment of the present application. [Figure 24] FIG. 24 is a structural schematic diagram of a battery cell in the battery assembly shown in FIG. 23. [Diagram 25] 1A and 1B are schematic structural diagrams of a heat conduction member according to one embodiment of the present application; [Figure 26]FIG. 2 illustrates a structural schematic diagram of a second portion of the housing according to one embodiment of the present application; [Figure 27] FIG. 2 shows a schematic structural diagram of a battery (a first part of the housing is not shown) according to one embodiment of the present application; [Figure 28] 28 is an enlarged schematic diagram of a portion A in the structure shown in FIG. 27. [Figure 29] 28 is a cross-sectional view of the BB portion in the structure shown in FIG. 27. [Diagram 30] 30 is an enlarged schematic diagram of the structure of part C in the structure shown in FIG. 29. [Diagram 31] FIG. 28 is a cross-sectional view of the structure shown in FIG. [Diagram 32] 32 is an enlarged schematic diagram of the structure shown in FIG. 31 , showing a portion D. FIG. [Diagram 33] FIG. 2 is a schematic diagram of a battery distribution structure in a vehicle according to an embodiment of the present application; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0057] The following describes in detail the embodiments of the technical solution of the present application in conjunction with the drawings. The following embodiments are only used to more clearly explain the technical solution of the present application, and are merely examples, which do not limit the protection scope of the present application.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art of the present application, and the terms used herein are merely for describing specific embodiments and are not intended to limit the present application, and the terms "including" and "having" and any variations thereof in the specification and claims of this application and the description of the drawings above are intended to cover the non-exclusive "including".

[0059] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only for distinguishing different objects, and cannot be understood as indicating or implying a relative importance or implicitly indicating the number, a particular order, or a hierarchical relationship of the technical features indicated. In the description of the embodiments of the present application, the meaning of "plurality" is two or more, unless otherwise specified.

[0060] An "embodiment" referred to in this specification means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art can explicitly and implicitly understand that the embodiments described in this specification can be combined with other embodiments.

[0061] In the description of the embodiments of the present application, the term "and / or" is merely a relation that describes related objects and indicates that three relations may exist, for example, A and / or B may represent three cases: A alone, a combination of A and B, and B alone. In addition, the character " / " in this specification generally indicates that the related objects before and after are in an "or" relationship.

[0062] In describing the embodiments of the present application, the term "multiple" refers to two or more (including two); similarly, "multiple sets" refers to two or more (including two sets); and "multiple sheets" refers to two or more (including two sheets).

[0063] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial direction," "radial direction," "circumferential direction," etc. are orientations or positional relationships shown based on the drawings, and are intended for the convenience and simplification of the description of the embodiments of the present application, and do not indicate or imply that the referred devices or elements have a specific orientation or must be configured and operated in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present application.

[0064] In the description of the embodiments of the present application, unless otherwise clearly defined or limited, the technical terms "attached", "connected", "connected", "fixed" and the like should be understood in a broad sense, and may refer to, for example, a fixed connection, a removable connection, or being integrated, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, internal communication between two elements, or an interactive relationship between two elements. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present application according to the specific circumstances.

[0065] At present, in view of the development of the market situation, the application of power batteries is becoming more and more widespread. Power batteries are not only applied to energy storage power systems such as hydroelectric, thermal, wind and solar power stations, but also widely applied to electric transportation tools such as electric bicycles, electric motorcycles, electric cars, and military equipment and aerospace, etc. With the continuous expansion of the application fields of power batteries, the market demand is also constantly increasing.

[0066] The applicant notes that a conventional power battery generally includes a housing and a battery cell, and the battery cell is disposed in the housing and fixed to the housing by a viscose fastening method. For battery cells with exposed electrode terminals on the top and bottom, the viscose fastening method is not convenient for battery repair and inspection. Therefore, how to solve the problem that battery cells with exposed electrode terminals on the top and bottom are not convenient for battery repair and inspection has become a technical problem that needs to be solved urgently by those skilled in the art.

[0067] In order to solve the problem that battery cells with exposed electrode terminals on the top and bottom are inconvenient for battery repair and inspection, according to research by the inventors of the present application, a first surface and a second surface are provided on the battery cell, and the second surface is provided so as to intersect with a third direction (the third direction intersects with both the first direction and the horizontal direction), whereby the electrode terminal is provided on the first surface and the second surface is connected to the casing, so that the connection surface between the battery cell and the casing does not have the electrode terminal, and it is easy for the electrode terminal to be fully exposed to the outside after the casing is opened, thereby improving the convenience of battery repair and inspection.

[0068] The battery cells according to the embodiments of the present application may be used in power consumption devices such as, but not limited to, vehicles, ships, and aircraft. A power supply system including the battery cells, batteries, and the like according to the present application may be used to configure the power consumption device.

[0069] In the embodiment of the present application, the power consumption device using a battery as a power source may be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a steamship, a spacecraft, etc. Here, the electric toy may include a stationary or mobile electric toy, such as a game console, an electric car toy, an electric steamship toy, an electric plane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, a spaceship, etc.

[0070] It should be understood that the technical solutions described in the embodiments of the present application are not limited to being applied to the batteries and power consuming devices described above, but may be applied to all batteries including housings and power consuming devices that use batteries. However, for the sake of simplicity, the following embodiments will be described using an electric vehicle as an example.

[0071] Referring to FIG. 1, FIG. 1 is a structural schematic diagram of a vehicle 1 according to some embodiments of the present application. The vehicle 1 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or a range extender vehicle, etc. A battery 10 is installed inside the vehicle 1, and the battery 10 may be installed at the bottom, head or tail of the vehicle 1. The battery 10 may be used to power the vehicle 1, for example, the battery 10 may be used as an operating power source for the vehicle 1. The vehicle 1 may further include a controller 11 and a motor 12, and the controller 11 is used to control the battery 10 to power the motor 12, for example, for starting the vehicle 1, navigation and operating power consumption needs during driving.

[0072] In some embodiments of the present application, the battery 10 may be used not only as an operating power source for the vehicle 1, but also as a drive power source for the vehicle 1 to provide drive power to the vehicle 1 in place of or in place of fuel or natural gas.

[0073] In order to meet different power demands, the battery 10 may include multiple battery cells, and a battery cell is the smallest unit constituting a battery assembly or a battery pack. The multiple battery cells may be connected in series and / or in parallel via electrode terminals for various applications. The battery 10 referred to in this application includes a battery assembly or a battery pack. Here, the multiple battery cells may be connected in series, in parallel, or in series-parallel, and the series-parallel connection is a mixture of the series connection and the parallel connection. The battery 10 may be called a battery pack. In the embodiment of this application, the multiple battery cells may directly constitute a battery pack, or may first constitute a battery assembly, and the battery assembly may further constitute a battery pack.

[0074] FIG. 2 shows a structural schematic diagram of a battery 10 according to an embodiment of the present application. In FIG. 2, the battery 10 may include a plurality of battery assemblies 20 and a housing 30, and the plurality of battery assemblies 20 are housed inside the housing 30. The housing 30 is used to house the battery cells 21 or the battery assemblies 20 to prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells. The housing 30 may be a simple three-dimensional structure such as a single rectangular parallelepiped, cylinder, or sphere, or a complex three-dimensional structure formed by combining simple three-dimensional structures such as a rectangular parallelepiped, cylinder, or sphere, and the embodiment of the present application is not limited thereto. The material of the housing 30 may be an alloy material such as an aluminum alloy or an iron alloy, a polymer material such as polycarbonate or polyisocyanurate foam plastic, or a composite material in which an epoxy resin is added to glass fiber, and the embodiment of the present application is not limited thereto.

[0075] 2, the housing 30 may include a first portion 31 and a second portion 32, the first portion 31 and the second portion 32 being fitted over each other, and the first portion 31 and the second portion 32 jointly defining a space for accommodating the battery cell 21. The second portion 32 may be a hollow structure with one end open, the first portion 31 may be a plate-like structure, and the first portion 31 is fitted over the open side of the second portion 32 so that the first portion 31 and the second portion 32 jointly define a space for accommodating the battery cell 21, and both the first portion 31 and the second portion 32 may be hollow structures with one end open, and the open side of the first portion 31 is fitted over the open side of the second portion 32.

[0076] FIG. 3 shows a structural schematic diagram of a battery assembly 20 according to an embodiment of the present application. In FIG. 3, the battery assembly 20 may include a plurality of battery cells 21, and the plurality of battery cells 21 may be first connected in series, parallel, or series-parallel to form the battery assembly 20, and the plurality of battery assemblies 20 may be further connected in series, parallel, or series-parallel to form a battery. In the present application, the battery cells 21 may include lithium ion batteries, sodium ion batteries, magnesium ion batteries, etc., and the embodiment of the present application is not limited thereto. The battery cells 21 may have a cylindrical shape, a flat shape, a rectangular shape, or other shapes, and the embodiment of the present application is not limited thereto. The battery cells 21 are generally divided into three types according to the packaging manner, namely, a cylindrical battery cell, a rectangular parallelepiped battery cell, and a pouch battery cell, and the embodiment of the present application is not limited thereto.

[0077] 4 shows a structural schematic diagram of a battery cell 21 in one embodiment of the present application. The battery cell 21 includes a case 211, an end cap 212, and an electrode assembly 213.

[0078] The end cap 212 is a member that covers the opening of the case 211 to isolate the internal environment of the battery cell 21 from the external environment. Although not limited thereto, the shape of the end cap 212 may be adapted to the shape of the case 211 so as to fit into the case 211. Optionally, the end cap 212 may be made of a material (e.g., aluminum alloy) having a certain hardness and strength, and thus the end cap 212 is less likely to deform when subjected to a push-out collision, and the battery cell 21 can have a higher structural strength and improve safety performance. The material of the end cap 212 may be various, for example, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application are not particularly limited thereto. In some embodiments, an insulating member may be installed inside the end cap 212, and the insulating member may be used to isolate the electrical connection members in the case 211 from the end cap 212 and reduce the risk of short circuit. Exemplarily, the insulating member may be plastic, rubber, etc.

[0079] The case 211 is an assembly for fitting the end cap 212 to form an internal environment of the battery cell 21, and the formed internal environment may be used to accommodate the electrode assembly 213, the electrolyte, and other components. The case 211 and the end cap 212 may be independent components, or an opening may be provided in the case 211, and the end cap 212 may be placed over the opening to form the internal environment of the battery cell 21. Without being limited thereto, the end cap 212 and the case 211 may be integrated, specifically, the end cap 212 and the case 211 may first form a common connection surface before other components enter the case, and when the inside of the case 211 needs to be packaged, the end cap 212 may be placed over the case 211. The case 211 may have various shapes and sizes, such as a rectangular parallelepiped, a cylindrical, a hexagonal tube, etc. Specifically, the shape of the case 211 may be determined according to the specific shape and size of the battery core assembly. The material of the case 211 may be various, for example, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application is not particularly limited thereto.

[0080] In some embodiments of the present application, as shown in Figures 5 to 33, the present application proposes a battery 10, which includes a housing 30 and a battery assembly 20, the battery assembly 20 is housed in the housing 30, the battery assembly 20 includes at least one battery cell 21, the battery assembly 20 is installed along a first direction, the first direction is the longitudinal direction of the battery 10 or the traveling direction of a power consumption device having the battery 10, the battery cell 21 has a first surface 216 and a second surface 217, the first surface 216 is provided with an electrode terminal 214, the second surface 217 is connected to the housing 30, the second surface 217 intersects with a third direction, and the third direction intersects with both the first direction and a horizontal plane.

[0081] For example, when the battery 10 is used in a power consumption device, the power consumption device is a vehicle 1. The vehicle 1 can run by being driven by the battery 10, and the battery assembly 20 constituting the battery 10 is installed along a first direction, which may be the running direction of the vehicle 1, i.e., the battery assembly 20 is installed along the running direction of the vehicle 1. In addition, in the present application, the battery 10 has a rectangular structure, and the battery 10 having a rectangular structure has a length direction, a width direction and a height direction, and the battery assembly 20 located in the housing 30 is installed along a first direction, which may be the length direction of the battery 10.

[0082] 5, in FIG. 5, the housing 30 may include a first part 31 and a second part 32, the second part 32 may be a hollow structure with one end open, the first part 31 may be a plate-like structure, and the first part 31 is placed over the open side of the second part 32 so that the first part 31 and the second part 32 jointly define a space for accommodating the battery cell 21. When it is necessary to repair or inspect the battery 10, the fitting relationship between the first part 31 and the second part 32 is released, and the first part 31 and the second part 32 are further separated, so that the battery cell 21 can be exposed to the outside, thereby realizing repair and inspection of the battery 10.

[0083] In the present application, the battery cells 21 are installed inside the housing 30, and the number of the battery cells 21 may be one or more than two, as shown in FIG. 5, in which the number of the battery cells 21 is greater than two, where the multiple battery cells 21 are installed side by side in a first direction.

[0084] Specifically, the battery cell 21 has a first surface 216 and a second surface 217, and the second surface 217 is arranged so as to intersect with a third direction (the third direction intersects with both the first direction and the horizontal direction), and here, the electrode terminal 214 is arranged on the first surface 216, and the second surface 217 is connected to the housing 30, so that the connection surface between the battery cell 21 and the housing 30 does not have the electrode terminal 214, and after the housing 30 is opened, the electrode terminal 214 can be easily sufficiently exposed to the outside, which makes it easy to repair and detect the battery 10 without separating the battery cell 21 and the housing 30 after the housing 30 is opened, and improves the convenience of repairing and detecting the battery 10.

[0085] In some embodiments of the present application, the length of the battery 10 is parallel to or transverse to the direction of travel of the power consumer device.

[0086] In this application, the running direction of the power consumer means that the power consumer can generate a relative displacement, and this relative displacement may be forward or backward. When the longitudinal direction of the battery 10 is parallel to the running direction of the power consumer, the longitudinal direction of the battery 10 is installed along the running direction of the power consumer, and when the longitudinal direction of the battery 10 crosses the running direction of the power consumer, the longitudinal direction of the battery 10 is installed at an angle with the running direction of the power consumer, and this angle is not equal to 0.

[0087] Specifically, by setting the relationship between the longitudinal direction of battery 10 and the traveling direction of the power consuming device, battery 10 can be attached to the power consuming device according to the demand of the power consuming device, thereby improving the convenience of placing battery 10 in the power consuming device.

[0088] In some embodiments of the present application, the first surface 216 is disposed opposite the second surface 217 along the third direction, and the battery cell 21 further has a third surface 218, where the third surface 218 is the surface of the battery cell 21 with the largest area, the third surface 218 is disposed along the third direction and intersects with the horizontal plane, and the third surface 218 is connected to the first surface 216 and the second surface 217.

[0089] In the present application, the battery cell 21 has a plurality of surfaces, where the third surface 218 is the surface with the largest area among the plurality of surfaces, i.e., the areas of all other surfaces of the battery cell 21 are smaller than the area of ​​the third surface 218.

[0090] Specifically, the third surface 218 is disposed along the third direction and intersects with the horizontal plane, and the first surface 216 and the second surface 217 are disposed opposite each other in the third direction, i.e., the first surface 216 and the second surface 217 are disposed parallel to each other with a gap therebetween. The first surface 216 and the second surface 217 are disposed opposite each other in the third direction, and the electrode terminal 214 is disposed on the first surface 216, i.e., the battery cell 21 exposes the electrode terminal 214 in the up-down direction (third direction). When repairing or inspecting the battery 10, the housing 30 is opened, and the second surface 217 of the battery cell 21 is connected to the housing 30 of the battery 10, so that the electrode terminal 214 on the first surface 216 can be exposed to the outside. After opening the housing 30, the repair and inspection of the battery 10 is facilitated without separating the battery cell 21 from the housing 30, and the convenience of repairing and inspecting the battery 10 is further improved.

[0091] Additionally, the third surface 218 is the surface with the largest area, and the area of ​​the second surface 217 is smaller than that of the third surface 218, allowing the housing 30 to connect more battery cells 21 per unit area, thereby improving the energy density of the battery 10.

[0092] It should be noted that, as shown in Figures 6 to 12, in the present application, the first direction and the second direction are both set in a horizontal plane, the third direction is set in a vertical plane, and the first direction, the second direction and the third direction are set two by two perpendicular to each other, where the first direction is the running direction of the power consuming device, the second direction is perpendicular to the running direction of the power consuming device, and the third direction is perpendicular to the first direction and the second direction respectively.

[0093] In some embodiments of the present application, the number of third surfaces 218 is two, the two third surfaces 218 are arranged opposite to each other along the first direction, the battery cell 21 includes two electrode terminals 214 with opposite polarities, and the two electrode terminals 214 with opposite polarities are both provided on the first surface 216.

[0094] In this embodiment, as shown in Figures 8 and 9, the battery cell 21 has a first surface 216, a second surface 217, and two third surfaces 218, where the first surface 216 and the second surface 217 are arranged opposite each other in a third direction, and the two third surfaces 218 are arranged opposite each other in a first direction, thereby forming a rectangular housing battery cell.

[0095] Specifically, the battery cell 21 has two third surfaces 218, each of which has the largest area. The first surface 216 and the second surface 217 are arranged opposite each other in the third direction, and the two third surfaces 218 are arranged opposite each other in the first direction, which further improves the convenience of arranging the battery cell 21 within the battery 10 and meets the installation needs of different batteries 10.

[0096] It should be understood that the structure of the rectangular housing battery cell is installed within the housing 30, and the large surface of the rectangular housing battery cell (the surface with the largest area, i.e., the third surface 218) intersects with the first direction, which not only improves the space utilization rate inside the housing 30 and improves the energy density of the battery 10, but also facilitates the layout of the rectangular housing battery cell within the housing 30, and allows the rectangular housing battery cell to meet the installation needs of different batteries 10.

[0097] It should be noted that when the battery cell 21 is a rectangular housing battery cell, the first surface 216 and the second surface 217 respectively form the top and bottom surfaces of the rectangular housing battery cell, i.e., one of the first surface 216 and the second surface 217 is the top surface of the rectangular housing battery cell, and the other of the first surface 216 and the second surface 217 is the bottom surface of the rectangular housing battery cell, and the two electrode terminals 214 with opposite polarities are both installed on the first surface 216, so that the rectangular housing battery cell has a structure in which the electrode terminals 214 are exposed at the top or bottom, and when repairing and inspecting the battery 10, the housing 30 can be opened in the vertical direction to improve the convenience of repairing and inspecting the battery 10.

[0098] In some embodiments of the present application, the number of third surfaces 218 is two, the two third surfaces 218 are arranged opposite to each other along the second direction, the second direction, the first direction and the third direction intersect two by two, the battery cell 21 includes two electrode terminals 214 with opposite polarities, and the two electrode terminals 214 with opposite polarities are both provided on the first surface 216.

[0099] In this embodiment, as shown in Figures 6 and 7, the battery cell 21 has a first surface 216, a second surface 217, and two third surfaces 218, where the first surface 216 and the second surface 217 are arranged opposite each other in a third direction, and the two third surfaces 218 are arranged opposite each other in a second direction, thereby forming a rectangular housing battery cell.

[0100] Specifically, the battery cell 21 has two third surfaces 218, each of which has the largest area. The first surface 216 and the second surface 217 are arranged opposite each other in the third direction, and the two third surfaces 218 are arranged opposite each other in the second direction, which further improves the convenience of arranging the rectangular housing battery cell within the battery 10 and meets the installation needs of different batteries 10.

[0101] It should be understood that the structure of the rectangular housing battery cell is installed within the housing 30, and the large surface of the rectangular housing battery cell (the surface with the largest area, i.e., the third surface 218) intersects with the second direction, which not only improves the space utilization rate inside the housing 30 and improves the energy density of the battery 10, but also facilitates the layout of the rectangular housing battery cell within the housing 30, and allows the battery cells 21 to meet the installation needs of different batteries 10.

[0102] It should be noted that when the battery cell 21 is a rectangular housing battery cell, the first surface 216 and the second surface 217 respectively form the top and bottom surfaces of the rectangular housing battery cell, i.e., one of the first surface 216 and the second surface 217 is the top surface of the rectangular housing battery cell, and the other of the first surface 216 and the second surface 217 is the bottom surface of the rectangular housing battery cell, and the two electrode terminals 214 with opposite polarities are both installed on the first surface 216, so that the rectangular housing battery cell has a structure in which the electrode terminals 214 are exposed at the top or bottom, and when repairing and inspecting the battery 10, the housing 30 can be opened in the vertical direction to improve the convenience of repairing and inspecting the battery 10.

[0103] In some embodiments of the present application, the number of third surfaces 218 is one, the battery cell 21 includes two electrode terminals 214 with opposite polarity, one of the two electrode terminals 214 with opposite polarity is provided on the first surface 216, and the case 211 of the battery cell 21 constitutes the other of the two electrode terminals 214 with opposite polarity.

[0104] In this embodiment, as shown in Figures 10 to 12, the battery cell 21 has a first surface 216, a second surface 217, and one third surface 218, where the first surface 216 and the second surface 217 are arranged opposite to each other in a third direction, and the third surface 218 is arranged in a third direction and intersects with a horizontal plane, so that the battery cell 21 forms a cylindrical battery cell.

[0105] Specifically, the battery cell 21 has one third surface 218, which is the surface with the largest area, and the first surface 216 and the second surface 217 are arranged opposite each other in the third direction, which further improves the convenience of arranging the battery cell 21 within the battery 10 and meets the installation needs of different batteries 10.

[0106] It should be understood that the cylindrical battery cell structure is installed within the housing 30, and the large surface of the cylindrical battery cell (the surface with the largest area, i.e., the third surface 218) is the outer circumferential surface of the cylindrical battery cell. By installing the battery cell 21 within the cylindrical battery cell, the layout and installation of the battery cell 21 within the housing 30 can be facilitated, and not only the space utilization rate within the housing 30 can be improved, but also the energy density of the battery 10 can be improved.

[0107] It should be noted that when the battery cell 21 is a cylindrical battery cell, the first surface 216 and the second surface 217 respectively form the top and bottom surfaces of the cylindrical battery cell, i.e., one of the first surface 216 and the second surface 217 is the top surface of the cylindrical battery cell, and the other of the first surface 216 and the second surface 217 is the bottom surface of the cylindrical battery cell, and one of the two electrode terminals 214 with opposite polarity is installed on the first surface 216, and the case 211 of the cylindrical battery cell forms the other electrode terminal 214, so that the cylindrical battery cell has a structure in which the pole is exposed at the top or the electrode terminal 214 is exposed at the bottom, and when repairing and inspecting the battery 10, the casing 30 can be opened in the vertical direction to improve the convenience of repairing and inspecting the battery 10.

[0108] In some embodiments of the present application, the battery cell 21 further has a third surface 218, the third surface 218 being the surface of the battery cell 21 with the largest area, the third surface 218 being arranged along a third direction and intersecting with a horizontal plane, and the first surface 216, the second surface 217 and the third surface 218 intersecting with each other two by two.

[0109] 17 to 20, the first surface 216 intersects with the second surface 217 and the third surface 218, respectively, the second surface 217 intersects with the third direction, the second surface 217 constitutes the top surface or bottom surface of the battery cell 21, the first surface 216 and the third surface 218 constitute the outer circumferential surface of the battery cell 21, the electrode terminal 214 is installed on the first surface 216, and the second surface 217 is connected to the casing 30 of the battery 10. When repairing and inspecting the battery 10, the casing 30 of the battery 10 can be opened, and the first surface 216 having the electrode terminal 214 can be exposed to the outside without separating the second surface 217 from the casing 30, which facilitates repairing and inspecting the battery 10 by the electrode terminal 214, thereby improving the convenience of repairing and inspecting the battery 10.

[0110] It should be understood that the second surface 217 is connected to the housing 30, the first surface 216 is located adjacent to the second surface 217, and the electrode terminal 214 is located on the first surface 216, so that even when the second surface 217 is connected to the housing 30, the electrode terminal 214 is not shielded, thereby effectively realizing repair and detection of the battery 10 by the electrode terminal 214.

[0111] In some embodiments of the present application, the number of first surfaces 216 is two, the two first surfaces 216 are arranged opposite to each other along the first direction, and the battery cell 21 includes two electrode terminals 214 with opposite polarities, where the two electrode terminals 214 with opposite polarities are both provided on one first surface 216, or the two electrode terminals 214 with opposite polarities are respectively provided on the two first surfaces 216.

[0112] 17 and 18, the third surface 218 is the surface with the largest area of ​​the battery cell 21, and the first surface 216, the second surface 217 and the third surface 218 intersect with each other two by two, where the number of the first surfaces 216 is two, and the two first surfaces 216 are arranged opposite to each other in a first direction. When the two first surfaces 216 are arranged, the two first surfaces 216 are arranged opposite to each other in a first direction, and the two electrode terminals 214 having opposite polarities may be arranged on one first surface 216 at the same time, or may be arranged on the two first surfaces 216 respectively, which satisfies the convenience of repair and detection of the battery 10, improves the convenience of arrangement of the electrode terminals 214, and meets the demand for diversity of the battery 10.

[0113] In some embodiments of the present application, the number of the first surfaces 216 is two, the two first surfaces 216 are arranged opposite to each other along the second direction, the second direction, the first direction and the third direction intersect two by two, and the battery cell 21 includes two electrode terminals 214 with opposite polarities, where the two electrode terminals 214 with opposite polarities are both provided on one first surface 216, or the two electrode terminals 214 with opposite polarities are respectively provided on two first surfaces 216.

[0114] 19 and 20, the third surface 218 is the surface with the largest area of ​​the battery cell 21, and the first surface 216, the second surface 217 and the third surface 218 intersect with each other two by two, where the number of the first surfaces 216 is two, and the two first surfaces 216 are arranged opposite to each other in the second direction. When the two first surfaces 216 are arranged, the two first surfaces 216 are arranged opposite to each other in the second direction, and the two electrode terminals 214 having opposite polarities may be arranged on one first surface 216 at the same time, or may be arranged on the two first surfaces 216 respectively, which can further improve the convenience of the arrangement of the electrode terminals 214 while satisfying the convenience of repair and detection of the battery 10, and further meet the demand for diversity of the battery 10.

[0115] In some embodiments of the present application, the second surface 217 is the surface of the battery cell 21 with the largest area, the area of ​​the first surface 216 is smaller than that of the second surface 217, the first surface 216 is arranged along the first direction and intersects with the second surface 217, the battery cell 21 includes two first surfaces 216, the two first surfaces 216 are arranged opposite to each other along the second direction, and the second direction, the first direction and the third direction intersect two by two. The battery cell 21 includes two electrode terminals 214 with opposite polarities, and the two electrode terminals 214 with opposite polarities are both provided on the same first surface 216, or the two electrode terminals 214 with opposite polarities are respectively provided on the two first surfaces 216.

[0116] Specifically, as shown in Figures 21 and 22, the second surface 217 is connected to the housing 30 of the battery cell 21, and the second surface 217 is the surface with the largest area, thereby increasing the contact area between the second surface 217 and the housing 30, and further improving the connection strength and stability between the battery cell 21 and the housing 30.

[0117] In addition, the first surface 216 and the second surface 217 are arranged to intersect, the electrode terminal 214 is arranged on the first surface 216, and the surface connected to the housing 30 does not have the electrode terminal 214, which makes it easy to fully expose the electrode terminal 214 after the housing 30 is opened, and further improves the convenience of repair and inspection of the battery 10.

[0118] In addition, the two first surfaces 216 are arranged opposite to each other in the second direction and intersect with the second surfaces 217, and the two electrode terminals 214 of opposite polarity may be arranged on one first surface 216 simultaneously, or may be arranged on the two first surfaces 216 respectively, which further improves the convenience of the arrangement of the electrode terminals 214 while satisfying the convenience of repair and detection of the battery 10, and further meets the demand for diversity of the battery 10.

[0119] In some embodiments of the present application, the second surface 217 is the surface with the largest area of ​​the battery cell 21, the area of ​​the first surface 216 is smaller than that of the second surface 217, the first surface 216 is arranged along the second direction and intersects with the second surface 217, the second direction, the first direction and the third direction intersect each other two by two, the battery cell 21 includes two first surfaces 216, and the two first surfaces 216 are arranged opposite to each other along the first direction. The battery cell 21 includes two electrode terminals 214 with opposite polarities, and the two electrode terminals 214 with opposite polarities are both arranged on the same first surface 216, or one of the two electrode terminals 214 with opposite polarities is arranged on one first surface 216, and the other of the two electrode terminals 214 with opposite polarities is arranged on the other first surface 216.

[0120] Specifically, as shown in Figures 23 and 24, the second surface 217 is connected to the housing 30 of the battery cell 21, and the second surface 217 is the surface with the largest area, thereby increasing the contact area between the second surface 217 and the housing 30, and further improving the connection strength and stability between the battery cell 21 and the housing 30.

[0121] In addition, the first surface 216 and the second surface 217 are arranged to intersect, the electrode terminal 214 is arranged on the first surface 216, and the surface connected to the housing 30 does not have the electrode terminal 214, which makes it easy to fully expose the electrode terminal 214 after the housing 30 is opened, and further improves the convenience of repair and inspection of the battery 10.

[0122] In addition, the two first surfaces 216 are arranged opposite to each other in the first direction and intersect with the second surfaces 217, and the two electrode terminals 214 of opposite polarity may be arranged on one first surface 216 simultaneously, or may be arranged on the two first surfaces 216 respectively, which further improves the convenience of the arrangement of the electrode terminals 214 while satisfying the convenience of repair and detection of the battery 10, and further meets the demand for diversity of the battery 10.

[0123] In some embodiments of the present application, the first surface 216 is the surface of the battery cell 21 that has the largest area.

[0124] Specifically, as shown in Figures 13 to 16, the first surface 216 is a part of the surfaces constituting the battery cell 21, where the battery cell 21 has a plurality of surfaces, with the first surface 216 having the largest area. By installing the electrode terminal 214 on the first surface 216, sufficient operating space can be provided for repair and inspection when repairing and inspecting the battery 10, further improving the convenience of repairing and inspecting the battery 10.

[0125] It should be noted that when there are multiple battery cells 21, the electrode terminal 214 of one of two adjacent battery cells 21 is installed in a corresponding recess of the other battery cell 21, and the concave-convex fitting structure is used to make the combined structure formed by the two adjacent battery cells 21 more compact, thereby improving the space utilization rate of the housing 30 and effectively increasing the energy density of the battery 10.

[0126] In some embodiments of the present application, the battery cell 21 includes a first surface 216 and a fourth surface disposed opposite the first surface 216, the first surface 216 and the fourth surface are disposed opposite each other along a first direction, and a recess is provided on an edge of the fourth surface, the first surface 216 is for mounting an electrode terminal 214, and the electrode terminal 214 is disposed protruding from the first surface 216 in a second direction and corresponds to the recess.

[0127] Specifically, as shown in Figures 13 and 14, the first surface 216 is the surface with the largest area, and a fourth surface is provided, and the fourth surface and the first surface 216 are provided opposite each other along a first direction, so as to provide sufficient operating space for repair and inspection of the battery 10 and to meet the diversity demands of the battery 10.

[0128] In addition, by arranging the first surface 216 and the fourth surface to be opposite each other in the first direction, effective arrangement of the electrode terminals 214 is facilitated, which meets the electrical draw demands of different batteries 10 and further ensures effective power supply of the batteries 10.

[0129] In some embodiments of the present application, the battery cell 21 includes a first surface 216 and a fourth surface arranged opposite to the first surface 216, the first surface 216 and the fourth surface are arranged opposite to each other along a second direction, the second direction, the first direction and the third direction intersect two by two, a recess is provided on an edge of the fourth surface, the first surface 216 is for installing an electrode terminal 214, the electrode terminal 214 is arranged to protrude from the first surface 216 in the second direction and corresponds to the recess.

[0130] Specifically, as shown in Figures 15 and 16, two first surfaces 216 are provided, each of which has the largest area, and the two first surfaces 216 are provided opposite each other along the second direction, which not only meets the need to provide sufficient operating space for repair and inspection when repairing and inspecting the battery 10, but also satisfies the versatility demands of the battery 10.

[0131] In addition, by arranging the two first surfaces 216 to face each other in the second direction, effective arrangement of the electrode terminals 214 is facilitated, which meets the electrical draw demands of different batteries 10 and further ensures effective power supply of the batteries 10.

[0132] In some embodiments of the present application, the battery 10 further includes a thermally conductive member 40, the thermally conductive member 40 is arranged along a first direction, and the thermally conductive member 40 is thermally conductively connected to at least the surface of the battery cell 21 that has the largest area.

[0133] 25, 27 and 28, the battery 10 further includes a heat conductive member 40, which is disposed within the housing 30 of the battery 10 and is disposed along a first direction. The surface of the battery cell 21 having the largest area is thermally connected to the heat conductive member 40, and the contact area between the battery cell 21 and the heat conductive member 40 is increased, thereby increasing the heat exchange efficiency between the battery cell 21 and the heat conductive member 40 and reducing safety issues due to poor heat dissipation of the battery 10.

[0134] In the present application, the first direction is the direction in which the power consuming device travels, the second direction and the first direction are both in the same plane, and the second direction is perpendicular to the first direction. When the power consuming device is subjected to an external impact along the second direction, the end of the thermal conductive member 40 can be effectively protected, thereby preventing the end of the thermal conductive member 40 from being damaged and causing the thermal conductive member 40 to break down.

[0135] In some embodiments of the present application, the battery 10 includes at least two battery assemblies 20, and along the second direction, both sides of the thermally conductive member 40 are thermally conductively connected to two battery assemblies 20 respectively, and the second direction, the first direction and the third direction intersect two by two.

[0136] 27 and 28, the heat conductive member 40 is provided between two battery assemblies 20 and is thermally conductively connected to each of the two battery assemblies 20. Here, the second direction is the width direction of the battery 10 or a direction transverse to the traveling direction of the power consuming device. By thermally conductively connecting both sides of the heat conductive member 40 to the surface of the battery cell 21 with the largest area, the heat exchange effect of the battery cell 21 by the heat conductive member 40 is improved.

[0137] In addition, all of the battery assemblies 20 provided within the housing 30 are thermally connected to the thermally conductive member 40, which further ensures sufficient heat dissipation from the battery assemblies 20 and further reduces safety issues caused by insufficient heat dissipation from the batteries 10.

[0138] In some embodiments of the present application, the battery 10 includes a plurality of thermally conductive members 40, the plurality of thermally conductive members 40 being aligned along a second direction, and the second direction, the first direction and the third direction intersect two by two.

[0139] Specifically, as shown in Figures 27 and 28, by installing multiple thermally conductive members 40, the heat exchange capacity for the battery cells 21 can be further improved, the battery 10 can be maintained within a relatively safe temperature range, and safety issues due to poor heat dissipation can be further reduced.

[0140] In some embodiments of the present application, a thermally conductive member 40 is provided on each side of the battery assembly 20 along the second direction, and the battery assembly 20 is thermally conductively connected to the thermally conductive members 40 on both sides.

[0141] Specifically, as shown in FIGS. 27 and 28, both sides of the battery assembly 20 are thermally connected to the thermal conductive members 40, which further enhances the heat dissipation capability of the battery assembly 20 and allows the temperature of the battery 10 to be maintained within a relatively safe temperature range, thereby further reducing safety issues due to poor heat dissipation.

[0142] In some embodiments of the present application, along the second direction, the battery cell 21 includes two opposing third surfaces 218, the third surfaces 218 being the surfaces of the battery cell 21 with the largest area, and the two third surfaces 218 of the battery cell 21 are thermally conductively connected to one thermally conductive member 40 respectively.

[0143] Specifically, as shown in Figures 27 and 28, the two third surfaces 218 with the largest areas are provided, and one thermal conductive member 40 is thermally connected to each of the two third surfaces 218, thereby further increasing the heat exchange efficiency between the battery cells 21 and the thermal conductive members 40, thereby improving the heat dissipation performance of the battery cells 21, and further reducing safety issues of the battery 10 caused by excessive temperature.

[0144] In some embodiments of the present application, the heat conducting member 40 may be an electronic freezing sheet, such as PTC.

[0145] In some embodiments of the present application, as shown in FIG. 30 , the battery cell 21 includes an electrode assembly 213, the electrode assembly 213 includes a main body portion 2131 and a tab 2132 protruding from the main body portion 2131, the tab 2132 is electrically connected to the electrode terminal 214, and along the second direction, the projections of the thermally conductive member 40 and the main body portion 2131 at least partially overlap and have an overlapping area, and the first direction, the second direction and the third direction intersect two by two.

[0146] Specifically, during use, heat generated by the battery cell 21 is mainly concentrated in the main body 2131 of the electrode assembly 213. By providing an overlapping area between the thermally conductive member 40 and the main body 2131, heat can be effectively dissipated between the main body 2131 and the thermally conductive member 40, improving the heat exchange performance of the thermally conductive member 40 with the main body 2131, allowing the battery cell 21 to be maintained at a safe temperature, and further enhancing safety of use.

[0147] As shown in Figures 29 and 30, in some embodiments of the present application, along the third direction, the size of the main body portion 2131 is L1 and the size of the thermal conduction member 40 is L2, where 0.5 < L2 / L1 < 1.5.

[0148] In this embodiment, by setting the range value of L2 / L1 within the interval [0.5, 1.5], the space occupied by the thermal conductive member 40 in the third direction can be reduced, thereby further increasing the space utilization rate of the battery 10.

[0149] It should be understood that if L2 / L1 is smaller than 0.5, the size of the thermal conductive member 40 is too small to effectively exchange heat with the battery cells 21, and if L2 / L1 is larger than 1.5, the size of the thermal conductive member 40 is relatively large and is likely to occupy space in the battery 10, which is disadvantageous to improving the space utilization rate of the battery 10.

[0150] It should be noted that in this embodiment, 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.

[0151] In some embodiments of the present application, along the third direction, the size of the overlapping region is L3, where 0.5≦L3 / L1≦1.

[0152] In this embodiment, by setting the size of the overlapping area in the third direction, the heat exchange area between the heat conduction member 40 and the main body portion 2131 can be rationally set, and the heat exchange effect of the main body portion 2131 by the heat conduction member 40 can be significantly reinforced.

[0153] It should be understood that if L3 / L1 is smaller than 0.5, the overlapping area between the thermally conductive member 40 and the main body portion 2131 is too small, so that the heat exchange effect of the thermally conductive member 40 with the battery cell 21 becomes poor, and heat dissipation to the battery cell 21 cannot be effectively guaranteed.

[0154] It should be noted that in this embodiment, the value of L3 / L1 can be 0.5, 0.6, 0.7, 0.8, 0.9...1.

[0155] In some embodiments of the present application, the thermally conductive member 40 includes passages therein that contain a heat exchange medium.

[0156] Specifically, a medium circulation device is connected to the heat conductive member 40, and a heat exchange medium (such as water or oil) is poured into the passage, which can circulate within the passage. The battery cells 21 transfer heat to the heat exchange medium in the passage via the heat conductive member 40, and the heat exchange medium flows through the passage and carries the heat exchanged with the battery cells 21 to the outside. This heat exchange method has high heat exchange efficiency and a simple structure.

[0157] In some embodiments of the present application, the battery 10 further includes a current collecting member 50, which is in fluid communication with the heat conducting member 40. Here, the current collecting member 50 is provided at one end of the heat conducting member 40 located in the first direction, or the current collecting member 50 is provided at each of both ends of the heat conducting member 40 located in the first direction.

[0158] 27 and 28, the current collecting members 50 are installed at one end or both ends in the first direction of the heat conducting member 40. By installing the current collecting members 50, it is possible to realize concentration of the heat exchange medium in the heat conducting member 40 and reduce the number of members, thereby improving the space utilization rate in the housing 30.

[0159] In addition, when the battery 10 is pushed out or impacted in the second direction, the installation position of the current collecting member 50 can avoid the push-out or impact and reduce the possibility of the current collecting member 50 being damaged, so that the heat exchange medium can sufficiently dissipate heat from the battery cells 21, and further reduce safety issues of the battery 10 caused by excessive temperature.

[0160] In some embodiments of the present application, there are two current collecting members 50, and the two current collecting members 50 are provided at one end of the thermal conductive member 40 located in the first direction, and the two current collecting members 50 are arranged along a third direction, the third direction is the height direction of the battery cell 21, and the first direction, the second direction and the third direction intersect two by two.

[0161] Specifically, by installing two collecting members 50, the current collection performance for the heat exchange medium is improved, so that the heat exchange medium has a good flow rate, and the heat exchange capacity of the battery cell 21 by the heat exchange medium can be further improved.

[0162] In addition, by jointly providing the two current collecting members 50 at one end in the first direction and arranging them along the third direction, the space occupied by the current collecting members 50 in the battery 10 along the first direction can be effectively reduced, thereby making it easier to install other structures in the battery 10.

[0163] In some embodiments of the present application, the battery cell 21 further includes a pressure relief mechanism 215 , and the pressure relief mechanism 215 is disposed on any one surface of the battery cell 21 .

[0164] Specifically, when the battery cell 21 experiences thermal runaway, the pressure inside the battery cell 21 is released in a timely manner by the pressure relief mechanism 215, thereby making it possible to avoid safety problems such as the explosion of the battery cell 21.

[0165] It should be understood that the pressure relief mechanism 215 may be disposed on the first surface 216, the second surface 217, the third surface 218, or other surfaces of the battery cell 21.

[0166] In some embodiments of the present application, the pressure relief mechanism 215 is provided on the first surface 216 or the second surface 217 .

[0167] Specifically, as shown in Figures 6 to 12, the pressure relief mechanism 215 and the electrode terminal 214 are both provided on the first surface 216. By placing the pressure relief mechanism 215 on the first surface 216, it is possible to facilitate the synchronous installation of the pressure relief mechanism 215 and the electrode terminal 214, thereby further improving the convenience of assembly and increasing production efficiency.

[0168] In addition, when the pressure relief mechanism 215 is installed on the second surface 217, the second surface 217 is connected to the housing 30, thereby utilizing the housing 30 to provide protection for the outside of the pressure relief mechanism 215 and reduce the possibility of the pressure relief mechanism 215 being subjected to impact.

[0169] In addition, the installation position of the pressure relief mechanism 215 can meet the needs of different types of battery cells 21 and further improve the safety performance of the battery 10.

[0170] 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 aligned along a first direction.

[0171] Specifically, at least two battery cells 21 are arranged side by side along the first direction, which facilitates the layout of the battery cells 21 inside the housing 30.

[0172] It should be noted that when at least two battery cells 21 are arranged along a first direction, the large surface (the surface with the largest area) of the battery cell 21 may be arranged along the first direction and intersect with a horizontal plane, or may be arranged along a second direction and intersect with the horizontal plane.

[0173] In some embodiments of the present application, the battery cell 21 includes an electrode assembly 213, the electrode assembly 213 has a wound structure and is flat, the outer surface of the electrode assembly 213 includes two flat surfaces, the two flat surfaces face each other along the second direction, or the electrode assembly 213 has a stacked structure, the first plate, the separator and the second plate of the electrode assembly 213 are stacked along the second direction, and the second direction, the first direction and the third direction intersect two by two.

[0174] The electrode assembly 213 is a member where an electrochemical reaction occurs in the battery cell 21. One or more electrode assemblies 213 may be included inside the battery cell 21. The electrode assembly 213 is mainly formed by winding or stacking plates (positive and negative plates) and leaving them, and generally, a separator is provided between the positive plate (first plate) and the negative plate (second plate). The parts of the plates (first and second plates) having active material constitute the main body 2131 of the electrode assembly 213, and the parts of the first and second plates not having active material constitute the tabs 2132, respectively. The positive and negative tabs may be located together at one end of the main body, or may be located at both ends of the main body 2131, respectively.

[0175] Specifically, the electrode assembly 213 is arranged in a wound structure and flat, and the outer surface of the electrode assembly 213 includes two flat surfaces, which face each other along the second direction, or the electrode assembly 213 has a stacked structure, thereby reducing the space occupied by the electrode assembly 213 in the first direction, and making it easier for the battery 10 to layout and install other components in the first direction.

[0176] In some embodiments of the present application, along a first direction, the maximum size of the battery cells 21 is L, along a second direction, the maximum size of the battery cells 21 is D, and the second direction, the first direction and the third direction intersect two by two, where the range value of L / D is 1 to 30.

[0177] Specifically, as shown in FIG. 7, in FIG. 7, the maximum size of the battery cell 21 along the first direction is L, and the maximum size of the battery cell 21 along the second direction is D. By setting the sizes of the battery cell 21 in the first direction and the second direction, it is possible to maximize the amount of power of the battery cell 21 while ensuring the support strength of the battery cell 21.

[0178] It should be noted that the value of L / D can be 1, 2, 3, 4, 5, 6, 7, 8... 30. By setting the L / D to different values, the battery cells 21 can have different shapes and further meet the demands of different types of batteries 10.

[0179] In some embodiments of the present application, along the first direction, the maximum size of the battery cells 21 is L, along the third direction, the maximum size of the battery cells 21 is H, the range value of L / H is 0.5 to 6, and the first direction, the second direction and the third direction intersect two by two.

[0180] Specifically, as shown in FIG. 7, in FIG. 7, the maximum size of the battery cell 21 along the first direction is L, and the maximum size of the battery cell 21 along the third direction is H, and by installing the battery cells 21 according to the above size ratio, the amount of power of the battery cells 21 can be maximized.

[0181] It should be noted that the value of L / H can be 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4... 6. By setting different values ​​of L / H, the battery cells 21 can have different shapes and further meet the demands of different models of batteries 10.

[0182] In some embodiments of the present application, the housing 30 includes a first portion 31 and a second portion 32, the first portion 31 and the second portion 32 are connected in a removably manner, the number of second surfaces 217 is at least one, and at least one second surface 217 is adhered to the first portion 31 or the second portion 32.

[0183] Specifically, as shown in FIG. 5, the second surface 217 is adhesively fixed to the first part 31 or the second part 32 of the housing 30, thereby improving convenience in the assembly process.

[0184] Furthermore, the adhesive fixation provides a high connection strength, effectively ensuring the stability of the battery cell 21 within the housing 30.

[0185] In some embodiments of the present application, the second surface 217 of the battery cell 21 and the first part 31 or the second part 32 of the housing 30 may be connected and fixed by a locking manner. For example, a locking groove is provided in the first part 31 or the second part 32 at a position corresponding to the battery cell 21, and the battery cell 21 is locked in the locking groove to realize the connection and fixation between the battery cell 21 and the first part 31 or the second part 32.

[0186] In some embodiments of the present application, the number of second surfaces 217 is two, the two second surfaces 217 are placed opposite each other, and the first portion 31 is adhered to one second surface 217 and the second portion 32 is adhered to the other second surface 217.

[0187] Specifically, the number of second surfaces 217 is two, and the two second surfaces 217 are arranged opposite each other in the third direction. By setting the number of second surfaces 217 to two and adhering and fixing the two second surfaces 217 to the first part 31 and the second part 32 of the housing 30, respectively, the connection strength between the battery cell 21 and the housing 30 is further improved, and the stability of the battery cell 21 within the housing 30 is further improved.

[0188] In some embodiments of the present application, as shown in FIG. 30 , the second surface 217 is fixedly connected to the first portion 31 and / or the second portion 32 via a first adhesive layer 60, and the battery 10 further includes a thermally conductive member 40, which is thermally conductively connected to the surface of the battery cell 21 having the largest area via a second adhesive layer 70, and the thermal conductivity coefficient of the first adhesive layer 60 is equal to or lower than the thermal conductivity coefficient of the second adhesive layer 70.

[0189] Specifically, the first adhesive layer 60 is used to connect the second surface 217 and the housing 30, and the second adhesive layer 70 is used to thermally connect the surface of the battery cell 21 having the largest area to the thermal conduction member 40. Therefore, the thermal conduction coefficient of the first adhesive layer 60 is set to be equal to or lower than the thermal conduction coefficient of the second adhesive layer 70 to ensure that heat from the battery cell 21 is dissipated more effectively via the thermal conduction member 40.

[0190] In some embodiments of the present application, the ratio of the thermal conductivity coefficient of the first adhesive layer 60 to the thermal conductivity coefficient of the second adhesive layer 70 is in the range of 0.1-1.

[0191] Specifically, any of the above ratio ranges can effectively dissipate heat from the battery cells 21 via the thermally conductive members 40 .

[0192] It is to be noted that the ratio of the thermal conductivity coefficient of the first adhesive layer to the thermal conductivity coefficient of the second adhesive layer may be 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9...1.

[0193] In addition, in this embodiment, the first adhesive layer 60 and the second adhesive layer 70 may be the same type of adhesive, but the thermal conductivity coefficients of both are different, that is, the thermal conductivity coefficient of the first adhesive layer 60 is smaller than the thermal conductivity coefficient of the second adhesive layer 70. For example, the first adhesive layer 60 and the second adhesive layer 70 can achieve different thermal conductivity coefficients by selecting thermally conductive polyurethane adhesive layers and adding different amounts of thermally conductive particles thereto.

[0194] In addition, the first adhesive layer 60 and the second adhesive layer 70 may be two different types of adhesives, for example, the first adhesive layer 60 may be a structural adhesive, a foam filler, a pressure sensitive adhesive or a potting adhesive, etc., and the second adhesive layer 70 may be a thermally conductive adhesive, etc.

[0195] In some embodiments of the present application, the battery 10 further includes a baffle 321, the baffle 321 is disposed along the third direction opposite the first surface 216 on which the electrode terminal 214 of the battery cell 21 is provided, and the distance between the electrode terminal 214 and the baffle 321 is 1.2 mm to 25 mm.

[0196] Specifically, the baffle 321 is installed inside the housing 30 and is installed to correspond to the electrode terminal of the battery cell 21. By setting the distance between the baffle 321 and the electrode terminal 214 to 1.2 mm to 25 mm, it is possible to prevent damage to the electrode terminal 214 due to an impact between the baffle 321 and the electrode terminal 214 when the battery 10 is impacted in the second direction.

[0197] It should be noted that the gap distance between the baffle 321 and the electrode terminal 214 may be 1.2 mm, 3 mm, 4.5 mm, 6 mm, 8.5 mm, 1 mm . . . 25 mm.

[0198] A second aspect of the present application proposes a power consumption device, which includes the above-mentioned battery 10, and the battery 10 is used to provide electrical energy to drive the running of the power consumption device.

[0199] In some embodiments of the present application, when the longitudinal direction of the battery 10 and the direction of travel of the power consumer are different, the first direction is the direction of travel of the power consumer.

[0200] Specifically, as shown in Figures 1 to 9, the first direction is set to the traveling direction of the power consuming device, and the third direction intersects with both the first direction and the horizontal direction, respectively. The battery cell 21 located inside the casing 30 of the battery 10 has a first surface 216 and a second surface 217, an electrode terminal 214 is installed on the first surface 216, and the second surface 217 is connected to the casing 30. By setting the first direction, the installation and layout of the battery 10 in the power consuming device is facilitated, and the arrangement method of the battery cells 21 inside the casing 30 can be adjusted to meet the usage needs of different power consuming devices.

[0201] The above description is only an outline of the technical solution of the present application, which can be implemented in accordance with the content of the specification, so as to make the technical means of the present application more clearly understandable, and to make the above and other objectives, features and advantages of the present application more obvious and understandable, the following particularly cites specific embodiments of the present application to describe them.

[0202] In an embodiment of the present application, as shown in Figures 1 to 33, the present application proposes a battery 10, which includes a housing 30 and a battery assembly 20 provided in the housing 30, and the number of electrode assemblies 213 is at least one, and each electrode assembly 213 includes at least one battery cell 21, where the battery cell 21 includes a first surface 216 and a second surface 217, an electrode terminal 214 is installed on the first surface 216, and the second surface 217 is connected to the housing 30. The battery assembly 20 is installed along a first direction (the first direction is the longitudinal direction of the battery 10 or the traveling direction of a power consuming device having the battery 10), and the second surface 217 intersects with a third direction (the height direction of the battery 10), wherein the first surface 216 may be installed along the first direction and intersect with a horizontal plane, or may be installed along the second direction (the width direction of the battery 10) and intersect with the horizontal plane, and may be installed opposite the second surface 217 in the third direction, and the first direction, the second direction and the third direction intersect with each other two by two.

[0203] When the battery 10 is used in a power consumption device, for example, the power consumption device is a vehicle, the vehicle can run by being driven by the battery 10, and the battery assembly 20 constituting the battery 10 is installed along a first direction, which may be the running direction of the vehicle, i.e., the battery assembly 20 is installed along the running direction of the vehicle 1. In addition, in the present application, the battery 10 has a rectangular structure, and the battery 10 having a rectangular structure has a length direction, a width direction and a height direction, and the battery assembly 20 located in the housing 30 is installed along a first direction, which may be the length direction of the battery 10.

[0204] Specifically, the battery cell 21 has a first surface 216 and a second surface 217, and the second surface 217 is arranged to intersect with a third direction (the third direction intersects with both the first direction and the horizontal direction). Here, by installing the electrode terminal 214 on the first surface 216 and connecting the second surface 217 to the housing 30, the connection surface between the battery cell 21 and the housing 30 does not have the electrode terminal 214, and after the housing 30 is opened, the electrode terminal 214 can be easily sufficiently exposed to the outside. This makes it easier to repair and detect the battery 10 without separating the battery cell 21 and the housing 30 after the housing 30 is opened, and improves the convenience of repairing and detecting the battery 10.

[0205] Furthermore, when the first surface 216 and the second surface 217 are arranged in a corresponding manner, both of them may be the surface with the largest area, or neither of them may be the surface with the largest area. When the first surface 216 and the second surface 217 are arranged in an intersecting manner, one of the first surface 216 and the second surface 217 may be the surface with the largest area. When neither the first surface 216 and the second surface 217 is the surface with the largest area, the battery cell 21 further has a third surface 218 with the largest area. When the first surface 216 and the second surface 217 are arranged opposite each other in a third direction, the third surface 218 may be arranged between the first surface 216 and the second surface 217. When the first surface 216, the second surface 217, and the third surface 218 intersect each other two by two, the first surface 216 and the third surface 218 form the outer circumferential surface of the battery cell 21.

[0206] The housing 30 includes a first portion 31 and a second portion 32, where 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 is placed over the open side of the second portion 32 such that the first portion 31 and the second portion 32 collectively define a space for accommodating the battery cells 21. The second surface 217 may be fixed by adhesion to the first portion 31 or the second portion 32 via a first adhesive layer 60.

[0207] Along the first direction, the maximum size of the battery cells 21 is L, and along the second direction, the maximum size of the battery cells 21 is D, where the range value of L / D is 1 to 30. Along the third direction, the maximum size of the battery cells 21 is H, and the range value of L / H is 0.5 to 6.

[0208] Furthermore, the battery cell 21 is provided with a pressure relief mechanism 215, which may be provided on any one of the first surface 216, the second surface 217, and the third surface 218. In the structure shown in the drawings of the specification of the present application, the pressure relief mechanism 215 and the electrode terminal 214 are both provided on the first surface 216.

[0209] Furthermore, the battery 10 further includes a heat conductive member 40, which is installed in the housing 30 of the battery 10 and is installed along a first direction, and which is thermally conductively connected to the battery cells 21, and here, the surface where the battery cells 21 and the heat conductive member 40 are thermally connected may be the surface of the battery cells 21 with the largest area. A passage for accommodating a heat exchange medium is provided in the heat conductive member 40, and the heat exchange medium flows through the passage and transfers heat to the battery cells 21 via the heat conductive member 40.

[0210] The thermally conductive member 40 and the battery cell 21 are bonded and fixed via a second adhesive layer 70, and the range of the ratio between the thermal conductivity coefficient of the first adhesive layer 60 and the thermal conductivity coefficient of the second adhesive layer 70 is 0.1 to 1.

[0211] Furthermore, along the second direction, the projections of the heat conducting member 40 and the body portion 2131 at least partially overlap and have an overlapping area.

[0212] Further, along the third direction, the size of the main body 2131 is L1, and the size of the heat conducting member 40 is L2, where 0.5≦L2 / L1≦1.5.

[0213] Additionally, along the third direction, the size of the overlapping region is L3, where 0.5≦L3 / L1≦1.

[0214] Moreover, the battery 10 further includes a current collecting member 50 disposed at an end of the heat conducting member 40 located in the first direction and in communication with the heat exchange medium passages of the heat conducting member 40 .

[0215] Furthermore, the housing 30 is further provided with a baffle 321. The baffle 321 is disposed in correspondence with the electrode terminal 214 of the battery cell 21, and the distance between the electrode terminal 214 and the baffle 321 is 1.2 mm to 25 mm.

[0216] Finally, it should be explained that the above embodiments are merely for illustrating the technical solution of the present application, and are not intended to limit it. Although the present application has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solutions described in the above embodiments can still be modified or some or all of the technical features therein can be replaced with equivalents, but these modifications or replacements do not cause the essence of the corresponding technical solution to depart from the scope of the technical solution of the embodiments of the present application, and all should be included in the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, all of the technical features mentioned in the embodiments may be combined in any manner. The present application is not limited to the specific embodiments disclosed herein, and includes all technical solutions included within the scope of the claims. [Explanation of symbols]

[0217] 1: Vehicle, 10: battery, 11: controller, 12: motor, 20: battery assembly, 21: battery cell, 211: case, 212: end cap, 213: electrode assembly, 2131: main body, 2132: tab, 214: electrode terminal, 215: pressure relief mechanism, 216: first surface, 217: second surface, 218: third surface, 30: housing, 31: first part, 32: second part, 321: baffle, 40: heat conductive member, 50: current collecting member, 60: first adhesive layer; 70: Second adhesive layer.

Claims

1. A battery, A housing (30); a battery assembly (20) housed in the housing (30), including at least one battery cell (21) and installed along a first direction, the first direction being a longitudinal direction of the battery or a traveling direction of a power consuming device having the battery, the battery cell (21) having a first surface (216) and a second surface (217), an electrode terminal (214) being provided on the first surface (216), the second surface (217) being connected to the housing (30), the second surface (217) being intersecting a third direction, and the third direction being intersecting both the first direction and a horizontal plane.

2. The battery of claim 1 , wherein a longitudinal direction of the battery is parallel to or intersects with a direction of travel of the power consuming device.

3. The battery of claim 1 or 2, characterized in that along the third direction, the first surface (216) is arranged opposite the second surface (217), the battery cell (21) further has a third surface (218), the third surface (218) is a surface of the battery cell (21) with the largest area, the third surface (218) is arranged along the third direction and intersects with the horizontal plane, and the third surface (218) is connected to the first surface (216) and the second surface (217).

4. 4. The battery of claim 3, wherein the number of the third surfaces (218) is two, the two third surfaces (218) are arranged opposite to each other along the first direction, the battery cell (21) includes two electrode terminals (214) having opposite polarities, and the two electrode terminals (214) having opposite polarities are both provided on the first surface (216).

5. 4. The battery according to claim 3, wherein the number of the third surfaces (218) is two, the two third surfaces (218) are arranged opposite to each other along the second direction, the second direction, the first direction and the third direction intersect two by two, the battery cell (21) includes two electrode terminals (214) having opposite polarities, and the two electrode terminals (214) having opposite polarities are both provided on the first surface (216).

6. 4. The battery according to claim 3, wherein the number of the third surfaces (218) is one, the battery cell (21) includes two electrode terminals (214) having opposite polarities, one of the two electrode terminals (214) having opposite polarities being provided on the first surface (216), and a case (211) of the battery cell (21) forming the other of the two electrode terminals (214) having opposite polarities.

7. The battery of claim 1 or 2, characterized in that the battery cell (21) further has a third surface (218), the third surface (218) being the surface of the battery cell (21) with the largest area, the third surface (218) being arranged along the third direction and intersecting the horizontal plane, and the first surface (216), the second surface (217) and the third surface (218) intersecting each other two by two.

8. the number of the first surfaces (216) is two, the two first surfaces (216) are disposed opposite to each other along the first direction, and the battery cell (21) includes two electrode terminals (214) having opposite polarities; The battery according to claim 7, characterized in that the two electrode terminals (214) having opposite polarities are both provided on one of the first surfaces (216), or the two electrode terminals (214) having opposite polarities are each provided on two of the first surfaces (216).

9. the number of the first surfaces (216) is two, the two first surfaces (216) are arranged opposite to each other along the second direction, the second direction, the first direction and the third direction intersect two by two, and the battery cell (21) includes two electrode terminals (214) having opposite polarities; The battery according to claim 7, characterized in that the two electrode terminals (214) having opposite polarities are both provided on one of the first surfaces (216), or the two electrode terminals (214) having opposite polarities are each provided on two of the first surfaces (216).

10. The second surface (217) is the surface of the battery cell (21) with the largest area, the area of ​​the first surface (216) is smaller than the area of ​​the second surface (217), the first surface (216) is arranged along the first direction and intersects with the second surface (217), the battery cell (21) includes two of the first surfaces (216), the two first surfaces (216) are arranged opposite each other along the second direction, and the second direction, the first direction and the third direction intersect two by two, The battery according to claim 1 or 2, characterized in that the battery cell (21) includes two electrode terminals (214) having opposite polarities, and the two electrode terminals (214) having opposite polarities are both provided on the same first surface (216), or the two electrode terminals (214) having opposite polarities are respectively provided on two first surfaces (216).

11. The second surface (217) is the surface of the battery cell (21) with the largest area, the area of ​​the first surface (216) is smaller than the area of ​​the second surface (217), the first surface (216) is arranged along the second direction and intersects with the second surface (217), the second direction, the first direction and the third direction intersect two by two, the battery cell (21) includes two of the first surfaces (216), and along the first direction, the two first surfaces (216) are arranged opposite each other, The battery according to claim 1 or 2, characterized in that the battery cell (21) includes two electrode terminals (214) having opposite polarities, and the two electrode terminals (214) having opposite polarities are both provided on the same first surface (216), or the two electrode terminals (214) having opposite polarities are respectively provided on two first surfaces (216).

12. 3. The battery according to claim 1 or 2, wherein the first surface (216) is the surface of the battery cell (21) with the largest area.

13. The battery cell (21) includes the first surface (216) and a fourth surface arranged opposite the first surface (216), the first surface (216) and the fourth surface are arranged opposite each other along a first direction, a recess is provided on an edge of the fourth surface, the first surface (216) is for installing the electrode terminal (214), and the electrode terminal (214) is installed protruding from the first surface (216) in the second direction and corresponds to the recess.

14. The battery cell (21) includes the first surface (216) and a fourth surface arranged opposite to the first surface (216), the first surface (216) and the fourth surface are arranged opposite to each other along a second direction, the second direction, the first direction and the third direction intersect two by two, a recess is provided on an edge of the fourth surface, the first surface (216) is for installing the electrode terminal (214), the electrode terminal (214) is installed protruding from the first surface (216) in the second direction and corresponds to the recess.

15. The battery according to any one of claims 1 to 14, further comprising a thermally conductive member (40), the thermally conductive member (40) being arranged along the first direction, and the thermally conductive member (40) being thermally conductively connected to at least the surface of the battery cell (21) that has the largest area.

16. 16. The battery of claim 15, wherein the battery includes at least two battery assemblies (20), and along a second direction, both sides of the heat-conducting member (40) are thermally connected to two of the battery assemblies (20), respectively, and the second direction, the first direction and the third direction intersect two by two.

17. The battery of claim 15, characterized in that the battery includes a plurality of the thermal conduction members (40), the plurality of the thermal conduction members (40) being arranged along a second direction, and the second direction, the first direction and the third direction intersect two by two.

18. The battery of claim 17, characterized in that the heat conductive members (40) are provided on both sides of the battery assembly (20) along the second direction, and the battery assembly (20) is thermally connected to the heat conductive members (40) on both sides.

19. The battery of claim 18, characterized in that along the second direction, the battery cell (21) includes two opposing third surfaces (218), the third surfaces (218) being the surface of the battery cell (21) with the largest area, and the two third surfaces (218) of the battery cell (21) are each thermally conductively connected to one of the thermal conductive members (40).

20. The battery cell (21) includes an electrode assembly (213), the electrode assembly (213) includes a main body portion (2131) and a tab (2132) protruding from the main body portion (2131), the tab (2132) is electrically connected to the electrode terminal (214), and along a second direction, the projections of the thermal conduction member (40) and the main body portion (2131) at least partially overlap and have an overlapping area, and the first direction, the second direction and the third direction intersect two by two.

21. The battery of claim 20, characterized in that along the third direction, the size of the main body portion (2131) is L1 and the size of the thermal conduction member (40) is L2, where 0.5≦L2 / L1≦1.

5.

22. 21. The battery of claim 20, wherein along the third direction, a size of the overlapping region is L3, where 0.5≦L3 / L1≦1.

23. 23. The battery of any one of claims 15 to 22, characterized in that the heat transfer member (40) is provided with passages therein for containing a heat exchange medium.

24. The battery further includes a current collecting member (50), the current collecting member (50) being in fluid communication with the thermally conductive member (40); The battery described in claim 23, characterized in that the current collecting member (50) is provided at one end of the heat conducting member (40) located in the first direction, or the current collecting member (50) is provided at both ends of the heat conducting member (40) located in the first direction.

25. The battery of claim 24, characterized in that there are two current collecting members (50), the two current collecting members (50) are provided at one end of the heat conducting member (40) located in the first direction, and the two current collecting members (50) are arranged along the third direction.

26. The battery of any one of claims 1 to 25, wherein the battery cell (21) further includes a pressure relief mechanism (215), the pressure relief mechanism (215) being installed on a surface of any one of the battery cells (21).

27. 27. The battery of claim 26, wherein the pressure relief mechanism (215) is provided on the first surface (216) or the second surface (217).

28. 28. The battery of any one of claims 1 to 27, wherein the battery assembly (20) includes at least two battery cells (21), the at least two battery cells (21) being aligned along the first direction.

29. The battery cell (21) includes an electrode assembly (213), the electrode assembly (213) has a wound structure and is flat, and an outer surface of the electrode assembly (213) includes two flat surfaces, the two flat surfaces facing each other along a second direction; Or, the electrode assembly (213) has a stacked structure, and the first plate, the separator and the second plate of the electrode assembly (213) are stacked along a second direction; 29. The battery according to claim 1, wherein the second direction, the first direction and the third direction intersect two by two.

30. The battery of any one of claims 1 to 29, characterized in that along the first direction, a maximum size of the battery cells (21) is L, along the second direction, a maximum size of the battery cells (21) is D, and the second direction, the first direction and the third direction intersect two by two, where a range value of L / D is 1 to 30.

31. The battery of any one of claims 1 to 29, characterized in that along the first direction, a maximum size of the battery cells (21) is L, along the third direction, a maximum size of the battery cells (21) is H, and a range value of L / H is 0.5 to 6.

32. 32. The battery of claim 1, wherein the housing (30) comprises a first portion (31) and a second portion (32), the first portion (31) and the second portion (32) are connected in a detachable manner, the number of the second surfaces (217) is at least one, and at least one of the second surfaces (217) is adhered to the first portion (31) or the second portion (32).

33. 33. The battery according to claim 32, characterized in that the number of the second surfaces (217) is two, the two second surfaces (217) are placed opposite each other, the first portion (31) is adhered to one of the second surfaces (217) and the second portion (32) is adhered to the other of the second surfaces (217).

34. The battery of claim 32 or 33, characterized in that the second surface (217) is fixedly connected to the first portion (31) and / or the second portion (32) via a first adhesive layer (60), the battery further includes a thermally conductive member (40), the thermally conductive member being thermally conductively connected to the surface of the battery cell (21) with the largest area via a second adhesive layer (70), and the thermal conductivity coefficient of the first adhesive layer (60) being equal to or less than the thermal conductivity coefficient of the second adhesive layer (70).

35. 35. The battery of claim 34, wherein the ratio of the thermal conductivity coefficient of the first adhesive layer (60) to the thermal conductivity coefficient of the second adhesive layer (70) is in the range of 0.1 to 1.

36. The battery according to any one of claims 1 to 35, further comprising a baffle, the baffle being disposed along the third direction opposite the first surface (216) on which an electrode terminal (214) of the battery cell (21) is provided, and a distance between the electrode terminal (214) and the baffle is 1.2 mm to 25 mm.

37. 37. An electrical power consumer comprising a battery according to claim 1 , the battery being adapted to provide electrical energy to power the travel of the electrical power consumer.

38. 38. The power consuming device of claim 37, wherein when a longitudinal direction of the battery and a direction of travel of the power consuming device are different, the first direction is the direction of travel of the power consuming device.

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