Battery device and electric appliance

Abstract

The application relates to the battery technical field and provides a battery device and a power utilization equipment. The battery device comprises a box body comprising a first wall for forming a containing cavity; a battery monomer assembly accommodated in the containing cavity, the battery monomer assembly comprising at least one battery monomer supported by the first wall; and at least one limiting piece, the limiting piece comprising a first limiting body and a second limiting body, one end of the first limiting body being connected with the first wall, the second limiting body comprising a main body part and a avoiding part, the main body part being connected with the other end of the first limiting body along the arrangement direction of the first wall to the battery monomer and being pressed against one side of the battery monomer away from the first wall, and the avoiding part being configured for allowing the battery monomer to fall into the containing cavity. Through the technical scheme, the assembly efficiency of the battery device can be improved, and the cost can be reduced.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a battery device and an electrical appliance. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] Currently, with the rapid development of new energy vehicles, battery devices are increasingly coming into the public eye.

[0004] In related technologies, battery devices typically include a housing and individual battery cells housed within the housing. During assembly, individual battery cells are usually fixed to the housing using adhesive, which not only results in low assembly efficiency but also in complex assembly processes and high costs. Utility Model Content

[0005] The purpose of this application is to provide a battery device and electrical equipment to improve the assembly efficiency of the battery device, simplify the assembly process, and reduce production costs. This purpose is achieved through the following technical solution:

[0006] In a first aspect, this application provides a battery device, comprising: a housing having a receiving cavity and including a first wall for forming the receiving cavity; a battery cell assembly housed within the receiving cavity, the battery cell assembly including at least one battery cell supported by the first wall; and a limiting member including a first limiting body and a second limiting body, one end of the first limiting body being connected to the first wall, the second limiting body including a main body and a clearance portion, the main body being connected to the other end of the first limiting body along the first wall to the arrangement direction of the battery cells, and pressing against the side of the battery cell opposite to the first wall, wherein the main body extends along a first direction intersecting the arrangement direction, and the clearance portion is configured to allow the battery cell to fall into the receiving cavity.

[0007] According to the battery device provided in this application, by providing at least one limiting member on the first wall of the housing, one end of the first limiting body of each limiting member is connected to the first wall, and a second limiting body is connected to the end of the first limiting body away from the first wall. The second limiting body includes a main body and a clearance part. The main body extends along a first direction and presses against the side of the battery cell away from the first wall. The battery cell can be inserted into the receiving cavity of the housing from the clearance part, and the battery cell can slide relative to the first wall along the first direction, thereby being pressed by the main body of the second limiting body. This can achieve the goal of fixing the battery cell in the housing by the limiting member, and can reduce the risk of the battery cell shaking relative to the first wall, thereby improving the stability of the battery cell fixing. Furthermore, since the method of fixing the battery cell by adhesive is eliminated, and there is no need to provide an installation structure for filling structural adhesive on the first wall, it not only helps to improve the energy density of the battery device, but also simplifies the assembly process of the battery cell, thereby improving the assembly efficiency of the battery cell and reducing the production cost of the battery device.

[0008] In addition, the battery device provided in this application may also have the following additional technical features:

[0009] In some embodiments of this application, the avoidance portion is disposed at one end of the second limiting body along the first direction or between the two ends of the second limiting body along the first direction.

[0010] When the clearance part is located at one end of the second limiting body along the first direction, the battery cell enters the box through the clearance part and can slide relative to the first wall in the same direction, thereby being pressed by the main body of the second limiting body.

[0011] When the clearance portion is located between the two ends of the second limiting body along the first direction, the battery cell enters the housing through the clearance portion and can slide relative to the first wall in different directions, thereby being pressed by the main body of the second limiting body.

[0012] In some embodiments of this application, there are multiple limiting members, and the multiple limiting members are spaced apart along the second direction. The clearance portions of two adjacent second limiting bodies are arranged opposite to each other. The two adjacent clearance portions are used for the battery cell to be installed between two adjacent first limiting bodies. The second direction intersects with the first direction and the arrangement direction in pairs.

[0013] By arranging multiple limiting members at intervals along the second direction, the battery cell can be inserted between two adjacent first limiting members through the clearance of two adjacent second limiting members. Furthermore, by sliding relative to the first wall along the first direction, the main body of each of the two adjacent second limiting members can press against the side of the battery cell away from the first wall, thereby further improving the stability and reliability of the battery cell installation and fixation.

[0014] In some embodiments of this application, the maximum distance between two adjacent avoidance portions is greater than the size of the battery cell along the second direction; and / or, the maximum distance between two adjacent main body portions is less than the size of the battery cell along the second direction.

[0015] By setting the maximum distance between two adjacent clearance parts to be greater than the size of the battery cell along the second direction, the battery cell can be inserted between two adjacent first limit bodies through the two adjacent clearance parts, reducing the risk of the battery cell getting stuck when it falls into the battery box, thereby improving the assembly efficiency of the battery cell.

[0016] By setting the maximum distance between two adjacent main bodies to be less than the size of the battery cell along the second direction, the battery cell can slide relative to the first wall along the first direction after being inserted between two adjacent first limiting bodies through two adjacent clearances. This allows it to be pressed against by the two adjacent main bodies, thereby improving the reliability of battery cell installation and fixation. The structure and principle are relatively simple and easy to implement.

[0017] In some embodiments of this application, the avoidance portion includes an avoidance notch having a first side, a second side, and a third side. The second side extends along the first direction, and the first side and the third side are respectively connected to the two ends of the second side along the first direction. The first side and the third side are both set at an obtuse angle to the second side.

[0018] The first and second sides of the clearance notch are set at obtuse angles to the second side, thereby increasing the clearance range of the clearance notch. This allows the battery cell to fall into the space between two adjacent first limiting bodies through the clearance notch, reducing the risk of the battery cell colliding with the first limiting bodies during installation, and thus helping to improve the assembly efficiency of the battery cell.

[0019] In some embodiments of this application, the second limiting body includes a first pressing part and a second pressing part, the first pressing part and the second pressing part protruding from both sides of the first limiting body along the second direction, and respectively used to press the battery cell located on both sides of the first limiting body along the second direction, wherein the first pressing part and the second pressing part are both provided with the avoidance notch.

[0020] The first pressing part and the second pressing part of the second limiting body protrude from both sides of the first limiting body along the second direction, so that when battery cells are provided on both sides of the first limiting body along the second direction, the first pressing part and the second pressing part can press against the battery cells provided on both sides of the first limiting body along the second direction. The structure and principle are relatively simple and easy to implement.

[0021] In some embodiments of this application, the first limiting body has at least one recess on the side facing the battery cell; and / or, the limiting member has at least one cavity.

[0022] By providing at least one recess on the side of the first limiting body facing the battery cell, the size between two adjacent first limiting bodies can be locally changed, thereby adapting to the installation of battery cells of different sizes.

[0023] By providing at least one cavity within the limiting component, not only can the overall weight of the battery device be reduced, but the cavity can also be configured as a heat exchange channel to facilitate heat exchange between individual battery cells by circulating a heat exchange medium within the cavity, thereby further improving the efficiency of heat exchange between individual battery cells.

[0024] In some embodiments of this application, the battery device further includes an insulating component, at least a portion of which is disposed between the limiting member and the battery cell.

[0025] By insulating the battery cell with an insulating component between it and the limiting component, the risk of short circuit in the battery cell is reduced, thereby improving the stability of the battery device.

[0026] In some embodiments of this application, the insulating component includes a first insulating member and a second insulating member, the first insulating member and the second insulating member being located at both ends of the first limiting body along the arrangement direction, the first insulating member being disposed between the battery cell and the first wall and the first limiting body, and the second insulating member being at least partially disposed between the limiting member and the battery cell.

[0027] Understandably, the two adjacent first limiting bodies are provided with first insulating members and second insulating members at both ends along the first wall to the arrangement direction of the battery cells. The two first insulating members and the two second insulating members are located on both sides of the battery cells along the second direction, and can insulate the battery cells from the limiting members, thereby reducing the risk of short circuit between the battery cells and the limiting members.

[0028] In some embodiments of this application, the first insulating member includes a first insulating segment and a second insulating segment connected to the first insulating segment. The first insulating segment is disposed between the battery cell and the first wall, and the second insulating segment is disposed between the battery cell and the first limiting body. And / or, the second insulating member includes a third insulating segment, a fourth insulating segment, and a fifth insulating segment. The third insulating segment is disposed between the battery cell and the first limiting body. The fourth insulating segment is connected to the third insulating segment and is disposed between the battery cell and the second limiting body. One end of the fifth insulating segment is connected to the fourth insulating segment, and the other end extends away from the battery cell.

[0029] When a battery cell is installed between two adjacent first limiting bodies and pressed against by two adjacent second limiting bodies, a first insulating member and a second insulating member are respectively provided on both sides of the battery cell along the second direction. The first insulating member is located on the side of the first limiting body closer to the first wall, with its first insulating segment located between the battery cell and the first wall, the second insulating segment located between the battery cell and the first limiting body, and the second insulating member located on the side of the first limiting body away from the first wall. Its third insulating segment is located between the battery cell and the first limiting body, the fourth insulating segment is located between the battery cell and the second limiting body, and one end of the fifth insulating segment is connected to the fourth insulating segment, while the other end extends away from the battery cell, thereby insulating and isolating the battery cell from the limiting members.

[0030] In some embodiments of this application, the first insulating member and / or the second insulating member are flexible members.

[0031] That is, at least one of the first insulating component and the second insulating component is a flexible component. The flexible component has flexibility, which can not only improve the insulation protection of the battery cell, but also provide a certain buffer and shock resistance effect for the battery cell, thereby further improving the stability and reliability of the battery cell installation.

[0032] In some embodiments of this application, the first wall is provided with a heat exchange channel for the flow of the heat exchange medium.

[0033] By setting a heat exchange channel in the first wall, a heat exchange medium can flow through the heat exchange channel, thereby enabling heat exchange between the battery cells and achieving temperature regulation of the battery cells.

[0034] In some embodiments of this application, the battery device further includes a heat-conducting element disposed between the first wall and the battery cell.

[0035] By setting a heat-conducting component between the first wall and the battery cell, the heat-conducting component can conduct heat when the heat exchange medium flows through the heat exchange channel in the first wall, which helps to improve the efficiency of heat exchange between the first wall and the battery cell, thereby achieving rapid cooling or heating of the battery cell and improving the uniformity of temperature regulation of the battery cell.

[0036] In some embodiments of this application, the heat-conducting element has a lubricating layer on the side facing the battery cell.

[0037] By providing a lubricating layer on the side of the heat-conducting component facing the battery cell, the lubricating layer has a lubricating effect, which reduces the friction between the battery cell and the heat-conducting component when the battery cell slides relative to the heat-conducting component, thereby helping to improve the assembly efficiency of the battery cells.

[0038] In some embodiments of this application, the box body further includes a first support beam and a second support beam, the first support beam and the second support beam being spaced apart along the first direction on the first wall, and the two ends of the limiting member along the first direction being fixedly connected to the first support beam and the second support beam respectively.

[0039] By arranging a first support beam and a second support beam at intervals along a first direction on the first wall, and fixing the two ends of the limiting member along the first direction to the first support beam and the second support beam respectively, the first support beam and the second support beam can cooperate with the limiting member to limit the battery cell located between two adjacent first limiting bodies, and can disperse the impact force to the limiting member, the first support beam and the second support beam when the battery device is subjected to external impact force, so as to help improve the stability and reliability of the battery cell installation and fixing.

[0040] Secondly, this application provides an electrical device including a battery device as described in any one of the embodiments of the first aspect, the battery device being used to provide electrical energy or store electrical energy.

[0041] The electrical equipment provided according to this application includes the battery device described in any one of the first aspect embodiments, and therefore has the technical effects of any of the above embodiments, which will not be repeated here. Attached Figure Description

[0042] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0043] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0044] Figure 2 A schematic diagram of the structure of a battery device provided in some embodiments of this application from one perspective;

[0045] Figure 3 for Figure 2 Enlarged structural diagram of section A in the middle;

[0046] Figure 4 A schematic diagram of the battery device provided in some embodiments of this application from another perspective;

[0047] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure along the BB direction;

[0048] Figure 6 for Figure 5 Enlarged structural diagram of section C;

[0049] Figure 7 A cross-sectional view of the limiting member provided in some embodiments of this application;

[0050] Figure 8 This is a schematic diagram of the structure of a battery cell provided in some embodiments of this application;

[0051] in, Figure 2 and Figure 4 In the coordinate system, the X-axis represents the first direction, and the Y-axis represents the second direction.

[0052] The attached figures are labeled as follows:

[0053] 1000, vehicles;

[0054] 100. Battery assembly; 200. Controller; 300. Motor;

[0055] 10. Housing; 11. First wall; 111. Heat exchange channel; 12. Limiting component; 121. First limiting body; 1211. Cavity; 122. Second limiting body; 1221. First pressing part; 1222. Second pressing part; 1223. Clearance part; 12231. First side; 12232. Second side; 12233. Third side; 13. First support beam; 20. Battery cell; 21. End cap; 21a. Electrode terminal; 22. Housing; 23. Electrode assembly; 31. First insulating component; 32. Second insulating component; 40. Heat-conducting component. Detailed Implementation

[0056] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0057] 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 to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0058] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0059] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0060] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0061] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0062] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0063] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0064] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of the application areas of battery devices, the market demand is also constantly increasing.

[0065] In related technologies, battery devices typically include a housing and individual battery cells housed within the housing. During assembly, individual battery cells are usually fixed to the housing using adhesive, which not only results in low assembly efficiency but also in complex assembly processes and high costs.

[0066] To address the issues of low assembly efficiency, complex assembly process, and high cost resulting from adhesive bonding of battery devices to the housing, this application designs a battery device that includes at least one limiting member within the housing. The battery cell assembly comprises at least one battery cell housed within the housing and supported by a first wall. Each limiting component includes a first limiting body and a second limiting body. One end of the first limiting body is connected to the first wall of the housing. The second limiting body is connected to the end of the first limiting body opposite to the first wall and extends along a first direction intersecting the first wall to the arrangement direction of the battery cells. The second limiting body includes a main body portion that presses against the side of the battery cell opposite to the first wall and a clearance portion for avoiding the battery cell. The clearance portion extends through the second limiting body along the arrangement direction of the first wall to the battery cells. The battery cell is configured to be able to be installed in the receiving cavity of the housing through the clearance portion and to slide relative to the first wall so as to be pressed by the main body portion of the second limiting body. This enables the fixed installation of the battery cell assembly, which not only improves the assembly efficiency of the battery device, but also simplifies the assembly process of the battery cell by eliminating the use of adhesive to fix the battery cell, thereby improving the assembly efficiency of the battery cell and helping to reduce the production cost of the battery device.

[0067] The battery device disclosed in this application can be used, but is not limited to, in electrical devices such as vehicles, ships, or aircraft. A power system for such an electrical device can be composed of battery cells and battery devices disclosed in this application. This helps reduce the risk of short circuits or fires in the battery device and improves its operational stability.

[0068] For ease of explanation, the following embodiments will be described using a vehicle as an example of an electrical device according to an embodiment of this application.

[0069] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is installed inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0070] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0071] Please see Figures 2 to 6 , Figure 2 This is a schematic diagram of the structure of a battery device provided in some embodiments of this application; Figure 3 for Figure 2 Enlarged structural diagram of section A in the middle; Figure 4 A schematic diagram of the battery device provided in some embodiments of this application from another perspective; Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure along the BB direction; Figure 6 for Figure 5An enlarged structural diagram of section C. This application provides a battery device 100, including: a housing 10, at least one battery cell 20, and at least two limiting members 12. The housing 10 has a receiving cavity and includes a first wall 11 for forming the receiving cavity; a battery cell 20 assembly is housed in the receiving cavity, the battery cell 20 assembly includes at least one battery cell 20, the battery cell 20 is supported by the first wall 11; at least one limiting member 12 includes a first limiting body 121 and a second limiting body 122, one end of the first limiting body 121 is connected to the first wall 11, the second limiting body 122 includes a main body and a clearance portion 1223, the main body is connected to the other end of the first limiting body 121 along the first wall 11 to the arrangement direction of the battery cells 20, and abuts against the side of the battery cells 20 away from the first wall 11, the main body extends along a first direction, the first direction intersects the arrangement direction of the first wall 11 to the battery cells 20, and the clearance portion 1223 is configured to allow the battery cells 20 to fall into the receiving cavity.

[0072] As an example, the housing 10 may include a first housing and a second housing. The first housing and the second housing are fastened together to form a receiving cavity inside the housing 10 to house the battery cell 20 assembly. Here, "closed" refers to covering or closing, and can be sealed or unsealed. The first housing may have a first wall 11 and side panels surrounding the periphery of the first wall 11, and the second housing may be a top cover.

[0073] As an example, the housing 10 may include a top cover, a frame, and a first wall 11. The top cover and the first wall 11 are respectively connected to the frame, so that the interior of the housing 10 forms a receiving cavity to accommodate the battery cell 20 assembly.

[0074] In some embodiments, the housing 10 may be part of the vehicle's chassis structure. For example, a portion of the housing 10 may be at least a portion of the vehicle's first wall 11, or a portion of the housing 10 may be at least a portion of the vehicle's crossbeams and longitudinal beams.

[0075] In some embodiments, each battery cell assembly 20 includes a plurality of battery cells 20 arranged along a first direction, and the plurality of battery cells 20 can be connected in series, in parallel or in a mixed manner through a busbar component.

[0076] In this embodiment of the application, the battery cell 20 can be a secondary battery, which refers to a battery cell 20 that can be used again after being discharged by recharging to activate the active materials.

[0077] As an example, the battery cell 20 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0078] In some embodiments, see Figure 8 , Figure 8 This is a schematic diagram of the structure of a battery cell provided in some embodiments of this application. The battery cell 20 includes a housing 22, an end cap 21, and an electrode terminal 21a. The housing 22 has an opening, and the electrode assembly 23 is installed inside the housing 22 through the opening. The end cap 21 covers the opening, and the end cap 21 is provided with the electrode terminal 21a.

[0079] As an example, the first direction can be the length direction of vehicle 1000, that is, the direction from the driver's cab of vehicle 1000 to the rear of the vehicle.

[0080] As an example, the first wall 11 surrounds the bottom of the receiving cavity.

[0081] As an example, the first limiting body 121 and the second limiting body 122 of the limiting member 12 are integrally connected, and the limiting member 12 as a whole can be integrally connected to the first wall 11 of the box 10, or integrally connected to the frame of the box 10.

[0082] As an example, the clearance section 1223 can be a clearance groove or a clearance notch.

[0083] By providing at least one limiting member 12 on the first wall 11 of the housing 10, each limiting member 12 has a first limiting body 121 and a second limiting body 122. One end of the first limiting body 121 is connected to the first wall 11, and the second limiting body 122 is connected to the end of the first limiting body 121 facing away from the first wall 11. The limiting body includes a main body and a clearance part 1223. The main body abuts against the side of the battery cell facing away from the first wall, allowing the battery cell 20 to fall into the housing 10 from the clearance part 1223 and slide relative to the first wall 11 along a first direction, so as to be stopped by the first limiting body 122. The main body of the two limiting bodies 122 presses against the battery cell 20, thereby fixing the battery cell 20, reducing the risk of the battery cell 20 shaking relative to the first wall 11, and helping to improve the stability of the battery cell 20. Since the battery cell 20 is fixed by adhesive, and there is no need to set an installation structure on the first wall 11 for filling with structural adhesive, it not only helps to improve the energy density of the battery device 100, but also simplifies the assembly process of the battery cell 20, thereby improving the assembly efficiency of the battery cell 20 and reducing the production cost of the battery device 100.

[0084] According to some embodiments of this application, the avoidance part 1223 is disposed at one end of the second limiting body 122 along the first direction or between the two ends of the second limiting body 122 along the first direction.

[0085] The first limiting body 121 may have one or more clearance portions 1223 arranged along the first direction. When there are multiple clearance portions 1223, multiple battery cells 20 can be installed in the housing at the same time through multiple clearance portions 1223 and pressed by the main body of the second limiting body 122, thereby further improving the assembly efficiency of the battery cells 20.

[0086] When the clearance part 1223 is provided at one end of the second limiting body 122 along the first direction, the battery cell 20 falls into the housing 10 through the clearance part 1223 and can slide relative to the first wall 11 in the same direction, thereby being pressed by the main body of the second limiting body 122.

[0087] See Figure 4 When the clearance part 1223 is located between the two ends of the second limiting body 122 along the first direction, the battery cell 20 falls into the housing 10 through the two adjacent clearance parts 1223, and can slide in different directions between the two adjacent first limiting bodies 121, and be pressed by the main body of the second limiting body 122.

[0088] According to some embodiments of this application, there are multiple limiting members 12, and the multiple limiting members 12 are spaced apart along the second direction. The clearance portions 1223 of two adjacent second limiting bodies 122 are arranged opposite to each other. The two adjacent clearance portions 1223 are used for the battery cell 20 to be installed between two adjacent first limiting bodies 121. The second direction intersects with the first direction and the arrangement direction from the first wall 11 to the battery cell 20 in pairs.

[0089] As an example, the second direction can be the width direction of the vehicle (1000).

[0090] By arranging multiple limiting members 12 at intervals along the second direction, the battery cell 20 can fall between two adjacent first limiting members 121 through the avoidance parts 1223 of two adjacent second limiting members 122. Furthermore, by sliding relative to the first wall 11 along the first direction, the main body of each of the two adjacent second limiting members 122 can press against the side of the battery cell 20 away from the first wall 11, thereby further improving the stability and reliability of the battery cell 20 installation and fixation.

[0091] According to some embodiments of this application, the maximum distance between two adjacent clearance portions 1223 is greater than the dimension of the battery cell 20 along the second direction; the maximum distance between two adjacent main body portions is less than the dimension of the battery cell 20 along the second direction.

[0092] By setting the maximum distance between two adjacent clearance portions 1223 to be greater than the size of the battery cell 20 along the second direction, the battery cell 20 can fall between two adjacent first limit bodies 121 through the two adjacent clearance portions 1223, reducing the risk of the battery cell 20 getting stuck when it falls into the housing 10, thereby improving the assembly efficiency of the battery cell 20.

[0093] By setting the maximum distance between two adjacent main bodies to be less than the size of the battery cell 20 along the second direction, the battery cell 20 falls between two adjacent first limiting bodies 121 after passing through two adjacent clearance parts 1223 and slides relative to the first wall 11 along the first direction, thereby being pressed by the two adjacent main bodies, which can improve the reliability of the battery cell 20 installation and fixation. The structure and principle are relatively simple and easy to implement.

[0094] See Figure 3 According to some embodiments of this application, the avoidance part 1223 includes an avoidance notch, which has a first side 12231, a second side 12232 and a third side 12233. The second side 12232 extends along a first direction. The first side 12231 and the third side 12233 are respectively connected to the two ends of the second side 12232 along the first direction, and the first side 12231 and the third side 12233 are both set at an obtuse angle with the second side 12232.

[0095] Understandably, the first side 12231, the second side 12232, and the third side 12233 are all located on the side of the clearance notch facing the battery cell 20 during the installation of the battery cell 20. Among them, the length of the second side 12232 can be adapted to the dimension of each battery cell 20 along the first direction.

[0096] The first side 12231 and the second side 12232 of the clearance notch are respectively set at an obtuse angle to the second side 12232, thereby increasing the clearance range of the clearance notch so that the battery cell 20 can fall into the space between two adjacent first limiting bodies 121 through the clearance notch, reducing the risk of the battery cell 20 colliding with the first limiting body 121 during installation, and thus helping to improve the assembly efficiency of the battery cell 20.

[0097] According to some embodiments of this application, the second limiting body 122 includes a first pressing part 1221 and a second pressing part 1222. The first pressing part 1221 and the second pressing part 1222 respectively protrude from both sides of the first limiting body 121 along the second direction and are respectively used to press the battery cell 20 located on both sides of the first limiting body 121 along the second direction. The first pressing part 1221 and the second pressing part 1222 are both provided with clearance notches.

[0098] Understandably, the end of the first limiting body 121 that is away from the first wall 11 is connected to the middle of the second limiting body 122, so that the second limiting body 122 can form a first pressing part 1221 and a second pressing part 1222 for pressing against the battery cell 20.

[0099] The first pressing part 1221 and the second pressing part 1222 of the second limiting body 122 protrude from both sides of the first limiting body 121 along the second direction, so that when battery cells 20 are provided on both sides of the first limiting body 121 along the second direction, the first pressing part 1221 and the second pressing part 1222 can press against the battery cells 20 provided on both sides of the first limiting body 121 along the second direction. The structure and principle are relatively simple and easy to implement.

[0100] According to some embodiments of this application, the first limiting body 121 has at least one recess on the side facing the battery cell 20; the limiting member 12 has at least one cavity 1211 inside.

[0101] As an example, the cavity is formed by a partial recess of the first limiting body 121 on the side facing the battery cell 20.

[0102] As an example, the cavity can be set at the position of the first limiting body 121 corresponding to the avoidance notch, and extend along the arrangement direction of the first wall 11 to the battery cell 20.

[0103] By providing at least one recess on the side of the first limiting body 121 facing the battery cell 20, the size between two adjacent first limiting bodies 121 can be locally changed, thereby adapting to the installation of battery cells 20 of different sizes.

[0104] See Figure 7 , Figure 7 This is a cross-sectional structural schematic diagram of a limiting member provided in some embodiments of this application. As an example, at least one cavity 1211 is provided in both the first limiting body 121 and the second limiting body 122.

[0105] By providing at least one cavity 1211 within the limiting member 12, not only can the overall weight of the battery device 100 be reduced, but the cavity 1211 can also be configured as a heat exchange channel to facilitate heat exchange of the battery cells 20 by circulating a heat exchange medium within the cavity 1211, thereby further improving the efficiency of heat exchange of the battery cells 20.

[0106] According to some embodiments of this application, the battery device 100 further includes an insulating component, at least a portion of which is disposed between the limiting member 12 and the battery cell 20.

[0107] As an example, the insulating component is at least one insulating element.

[0108] By providing an insulating component between the battery cell 20 and the limiting member 12, the insulating component is used to insulate and isolate the battery cell 20 from the limiting member 12, thereby reducing the risk of short circuit in the battery cell 20 and thus helping to improve the stability of the battery device 100 in use.

[0109] See Figure 6 According to some embodiments of this application, the insulating component includes a first insulating member 31 and a second insulating member 32. The first insulating member 31 and the second insulating member 32 are respectively located at both ends of the first limiting body 121 along the arrangement direction. The first insulating member 31 is disposed between the battery cell 20 and the first wall 11 and the first limiting body 121, and the second insulating member 32 is at least partially disposed between the limiting member 30 and the battery cell 20.

[0110] As an example, the first insulating member 31 and the second insulating member 32 can be rubber, silicone, etc.

[0111] Understandably, the two adjacent first limiting bodies 121 are provided with a first insulating member 31 and a second insulating member 32 at both ends along the first wall 11 to the arrangement direction of the battery cell 20. The two first insulating members 31 and the two second insulating members 32 are located on both sides of the battery cell 20 along the second direction, and can insulate the battery cell 20 from the limiting member 12, thereby reducing the risk of short circuit between the battery cell 20 and the limiting member 12.

[0112] See Figure 6 According to some embodiments of this application, the first insulating member 31 includes a first insulating segment 311 and a second insulating segment 312 connected to the first insulating segment 311. The first insulating segment 311 is disposed between the battery cell 20 and the first wall 11, and the second insulating segment 312 is disposed between the battery cell 20 and the first limiting body 121. The second insulating member 32 includes a third insulating segment 321, a fourth insulating segment 322 and a fifth insulating segment 323. The third insulating segment 321 is disposed between the battery cell 20 and the first limiting body 121. The fourth insulating segment 322 is connected to the third insulating segment 321 and is disposed between the battery cell 20 and the second limiting body 122. One end of the fifth insulating segment 323 is connected to the fourth insulating segment 322, and the other end extends away from the battery cell 20.

[0113] As an example, along the arrangement direction of the first wall 11 to the battery cell 20, the extension length of the fifth insulating segment 323 extends beyond the second limiting body 122 on the side opposite to the first limiting body 121.

[0114] When the battery cell 20 is installed between two adjacent first limiting bodies 121 and pressed against by two adjacent second limiting bodies 122, a first insulating member 31 and a second insulating member 32 are respectively provided on both sides of the battery cell 20 along the second direction. The first insulating member 31 is located on the side of the first limiting body 121 close to the first wall 11, and its first insulating segment 311 is located between the battery cell 20 and the first wall 11. The second insulating segment 312 is located between the battery cell 20 and the first limiting body 121. The second insulating member 32 is located on the side of the first limiting body 121 away from the first wall 11. Its third insulating segment 321 is located between the battery cell 20 and the first limiting body 121. The fourth insulating segment 322 is located between the battery cell 20 and the second limiting body 122. One end of the fifth insulating segment 323 is connected to the fourth insulating segment 322, and the other end extends away from the battery cell 20, thereby isolating the battery cell 20 from the limiting member 12.

[0115] According to some embodiments of this application, the first insulating member 31 and / or the second insulating member 32 are flexible members.

[0116] That is, at least one of the first insulating member 31 and the second insulating member 32 is a flexible member. The flexible member has flexibility, which can not only improve the insulation protection of the battery cell 20, but also provide a certain buffer and shock resistance effect for the battery cell 20, thereby further improving the stability and reliability of the battery cell 20 installation.

[0117] See Figure 5 According to some embodiments of this application, the first wall 11 is provided with a heat exchange channel 111 for the flow of heat exchange medium.

[0118] As an example, the number of heat exchange channels 111 may include multiple sub-channels, which are spaced apart along the second direction and are interconnected.

[0119] By providing a heat exchange channel 111 within the first wall 11, a heat exchange medium can flow through the heat exchange channel 111, thereby enabling heat exchange between the battery cells 20 and regulating the temperature of the battery cells 20.

[0120] See Figure 6 According to some embodiments of this application, the battery device 100 further includes a heat-conducting element 40, which is disposed between the first wall 11 and the battery cell 20.

[0121] As an example, the heat-conducting component 40 can be a heat-conducting adhesive layer or a heat-conducting plate.

[0122] By setting a heat-conducting component 40 between the first wall 11 and the battery cell 20, the heat-conducting component 40 can conduct heat when the heat exchange medium flows through the heat exchange channel in the first wall 11, which helps to improve the efficiency of heat exchange between the first wall 11 and the battery cell 20, thereby achieving rapid cooling or heating of the battery cell 20 and improving the uniformity of temperature regulation of the battery cell 20.

[0123] According to some embodiments of this application, the heat-conducting element 40 is provided with a lubricating layer on the side facing the battery cell 20.

[0124] As an example, the lubricating layer can be a coating on the surface with a lubricant.

[0125] By providing a lubricating layer on the side of the heat-conducting component 40 facing the battery cell 20, the lubricating layer has a lubricating effect and is used to reduce the friction between the battery cell 20 and the heat-conducting component 40 when the battery cell 20 slides relative to the heat-conducting component 40, thereby helping to improve the assembly efficiency of the battery cell 20.

[0126] See Figure 2 and Figure 4 According to some embodiments of this application, the housing 10 further includes a first support beam 13 and a second support beam, the first support beam 13 and the second support beam being spaced apart along a first direction on the first wall 11, and the limiting member 12 being fixedly connected to the first support beam 13 and the second support beam at both ends along the first direction.

[0127] As an example, the first support beam 13 and the second support beam can be expansion beams, and one or more buffer cavities can be provided inside them.

[0128] As an example, the first support beam 13 may be provided with a positive output electrode base and a negative output electrode base, for electrical connection to the total positive output electrode and the total negative output electrode of the battery cell 20 assembly, respectively.

[0129] By providing a first support beam 13 and a second support beam at intervals along a first direction on the first wall 11, and fixing the two ends of the limiting member 12 along the first direction to the first support beam 13 and the second support beam respectively, the first support beam 13 and the second support beam can cooperate with the limiting member 12 to limit the battery cell 20 located between two adjacent first limiting bodies 121, and can disperse the impact force to the limiting member 12, the first support beam 13 and the second support beam when the battery device 100 is subjected to external impact force, so as to help improve the stability and reliability of the battery cell 20 installation and fixing.

[0130] According to some embodiments of this application, see Figures 2 to 7This application provides a battery device 100, including: a housing 10, a battery cell 20 assembly, a plurality of limiting members 12, and an insulation assembly. The housing 10 has a receiving cavity and includes a first wall 11 for forming the receiving cavity. The battery cell 20 assembly includes a plurality of battery cells 20 disposed within the receiving cavity and supported by the first wall 11. The plurality of limiting members 12 are spaced apart along a second direction, which intersects the arrangement direction from the first wall 11 to the battery cells 20. Each limiting member 12 includes a first limiting body 121 and a second limiting body 122. One end of the first limiting body 121 is connected to the first wall 11 and is arranged intersecting the arrangement direction from the first wall 11 to the battery cell 20. The second limiting body 122 is connected to the end of the first limiting body 121 away from the first wall 11 and is arranged intersecting the first limiting body 121. The second limiting body 122 has a clearance notch that extends through the second limiting body 122 along the arrangement direction from the first wall 11 to the battery cell 20. The battery cell 20 is configured to fall between two adjacent first limiting bodies 121 through the clearance notches of two adjacent second limiting bodies 122 and can slide relative to the first wall 11 until it is pressed against by the second limiting body 122. An insulating member is disposed between the limiting member 12 and the battery cell 20 to insulate and isolate the battery cell 20 from the limiting member 12. The technical solution of this application simplifies the assembly process of the battery cell 20, reduces the production cost of the product, and improves the assembly efficiency of the battery device 100.

[0131] According to some embodiments of this application, this application also provides an electrical device, including a battery device 100 as described in any of the above embodiments, the battery device 100 being used to provide electrical energy or store electrical energy.

[0132] The electrical equipment provided in this application can be, for example, a vehicle or an aircraft. Since it includes the battery device 100 of any of the above embodiments, it has the technical effects of any of the above embodiments, which will not be repeated here.

[0133] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A battery device, characterized in that, include: The housing has a receiving cavity and includes a first wall for forming the receiving cavity; A battery cell assembly is housed within the receiving cavity, the battery cell assembly comprising at least one battery cell, the battery cell being supported by the first wall; At least one limiting member is provided, the limiting member comprising a first limiting body and a second limiting body, one end of the first limiting body being connected to the first wall, the second limiting body comprising a main body and a clearance portion, the main body being connected to the other end of the first limiting body along the first wall to the arrangement direction of the battery cells, and pressing against the side of the battery cells opposite to the first wall. The main body extends along a first direction, which intersects with the arrangement direction, and the clearance portion is configured to allow the battery cell to fall into the receiving cavity.

2. The battery device according to claim 1, characterized in that, The avoidance part is located at one end of the second limiting body along the first direction or between the two ends of the second limiting body along the first direction.

3. The battery device according to claim 1, characterized in that, The number of limiting members is multiple, and the multiple limiting members are spaced apart along the second direction. The clearance portions of two adjacent second limiting bodies are arranged opposite each other and are used for the battery cell to be installed between two adjacent first limiting bodies. The second direction intersects with the first direction and the arrangement direction in pairs.

4. The battery device according to claim 3, characterized in that, The maximum distance between two adjacent clearance portions is greater than the dimension of the battery cell along the second direction; And / or, the maximum distance between two adjacent main body portions is less than the dimension of the battery cell along the second direction.

5. The battery device according to claim 3, characterized in that, The avoidance portion includes an avoidance notch, which has a first side, a second side, and a third side. The second side extends along the first direction, and the first side and the third side are respectively connected to the two ends of the second side along the first direction. The first side and the third side are both set at an obtuse angle to the second side.

6. The battery device according to any one of claims 3-5, characterized in that, The second limiting body includes a first pressing portion and a second pressing portion, the first pressing portion and the second pressing portion protruding from both sides of the first limiting body along the second direction, and respectively used to press against the battery cells located on both sides of the first limiting body along the second direction. Both the first pressing part and the second pressing part are provided with the avoidance part.

7. The battery device according to any one of claims 1-5, characterized in that, The first limiting body has at least one recess on the side facing the battery cell; And / or, the limiting member has at least one cavity.

8. The battery device according to any one of claims 1-5, characterized in that, The battery device further includes an insulating component, at least a portion of which is disposed between the limiting member and the battery cell.

9. The battery device according to claim 8, characterized in that, The insulating component includes a first insulating element and a second insulating element, which are respectively located at both ends of the first limiting body along the arrangement direction. The first insulating element is disposed between the battery cell and the first wall and the first limiting body, and the second insulating element is at least partially disposed between the limiting element and the battery cell.

10. The battery device according to claim 9, characterized in that, The first insulating member includes a first insulating segment and a second insulating segment connected to the first insulating segment. The first insulating segment is disposed between the battery cell and the first wall, and the second insulating segment is disposed between the battery cell and the first limiting body. And / or, the second insulating member includes a third insulating segment, a fourth insulating segment and a fifth insulating segment, the third insulating segment being disposed between the battery cell and the first limiting body, the fourth insulating segment being connected to the third insulating segment and disposed between the battery cell and the second limiting body, one end of the fifth insulating segment being connected to the fourth insulating segment, and the other end extending away from the battery cell.

11. The battery device according to claim 9, characterized in that, The first insulating element and / or the second insulating element are flexible elements.

12. The battery device according to any one of claims 1-5, characterized in that, The first wall is provided with a heat exchange channel for the flow of the heat exchange medium.

13. The battery device according to any one of claims 1-5, characterized in that, The battery device further includes a heat-conducting element disposed between the first wall and the battery cell.

14. The battery device according to claim 13, characterized in that, The heat-conducting component has a lubricating layer on the side facing the battery cell.

15. The battery device according to any one of claims 1-5, characterized in that, The housing also includes a first support beam and a second support beam, which are spaced apart on the first wall along the first direction. The limiting member is fixedly connected to the first support beam and the second support beam at both ends along the first direction, respectively.

16. An electrical appliance, characterized in that, Includes a battery device as described in any one of claims 1-15, the battery device being used to provide electrical energy or store electrical energy.

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