Battery and electric device

Abstract

The utility model provides a battery and a power utilization device, and belongs to the technical field of batteries. The battery comprises a box body, a plurality of battery monomers and connecting pieces, the box body is provided with an accommodating cavity; the plurality of single batteries are arranged in the accommodating cavity, the plurality of single batteries are arranged along a first direction and a second direction, the first direction is the thickness direction of the single batteries, and the second direction is crossed with the first direction; the connecting pieces are arranged between the two adjacent battery monomers in the second direction, and the connecting pieces are arranged in a non-whole piece mode, so that an accommodating area is formed between the corresponding first surfaces, facing each other in the second direction, of the two battery monomers; the receiving region provides a larger space below a predetermined height of the two battery cells than a space between the respective first surfaces when the connectors are arranged in a one-piece form.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery and an electrical device. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

[0003] In the battery production process, multiple battery cells need to be assembled to form a battery. How to optimize the battery structure is an important research direction in the battery production process. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems in the background technology. To this end, one purpose of the present application is to provide a battery and an electrical device to improve the safety performance of the battery.

[0005] The embodiment of the first aspect of the present application provides a battery, the battery comprising a housing, a plurality of battery cells and a connector. The housing has a housing cavity; a plurality of battery cells are arranged in the housing cavity, the plurality of battery cells are arranged along a first direction and a second direction, the first direction is the thickness direction of the battery cells, and the second direction intersects the first direction; the connector is arranged between two battery cells adjacent to each other in the second direction, the connector is arranged in a non-integral form, so that an accommodation area is formed between corresponding first surfaces of the two battery cells facing each other in the second direction, and the accommodation area provides a larger space below a predetermined height of the two battery cells than the space between the corresponding first surfaces when the connector is arranged in an integral form.

[0006] In the technical solution of the embodiment of the present application, the connector is arranged in a non-integral form, so that a receiving area is formed between the corresponding first surfaces of the two battery cells facing each other in the second direction intersecting the thickness direction of the battery cells, so as to receive the glue overflowing from the battery cells during the process of being squeezed and formed into the housing cavity. The connector is arranged in a non-integral form, so that the receiving area can provide a larger space below the predetermined height of the two battery cells than the space between the corresponding first surfaces when the connector is arranged in an integral form, and the receiving area can receive more glue, thereby reducing the probability of the glue exceeding the predetermined height and entering the corresponding second surfaces of the two battery cells facing each other in the first direction, thereby effectively reducing the occurrence of stress concentration and lithium deposition in the battery cells during the cyclic expansion process, and improving the safety performance of the battery.

[0007] In some embodiments, the maximum dimension of the orthographic projection of the connector on the first plane in the height direction of the battery cell is greater than or equal to half the height value of the battery cell, wherein the first plane is a plane perpendicular to the second direction. By making the maximum dimension of the orthographic projection of the connector on the first plane in the height direction of the battery cell greater than or equal to half the height value of the battery cell, the connection strength and connection stability of two adjacent battery cells in the height direction can be improved, thereby improving the structural stability of the battery.

[0008] In some embodiments, the maximum dimension of the orthographic projection of the connector on the first plane in the thickness direction of the battery cell is greater than or equal to half of the thickness of the battery cell, wherein the first plane is a plane perpendicular to the second direction. By making the maximum dimension of the orthographic projection of the connector on the first plane in the thickness direction of the battery cell greater than or equal to half of the thickness of the battery cell, the connection strength and connection stability of two adjacent battery cells in the thickness direction can be improved, thereby improving the structural stability of the battery.

[0009] In some embodiments, the connector includes at least two sub-connectors, at least one of which extends in the height direction of the battery cell, and at least one of which extends in the first direction. By extending at least one of the sub-connectors in the height direction of the battery cell, and at least one of the sub-connectors in the first direction, the connection strength of two adjacent battery cells in the height direction of the battery cell can be ensured, and the connection strength of two adjacent battery cells in the thickness direction of the battery cell can be ensured, thereby improving the structural stability of the battery.

[0010] In some embodiments, the connector includes at least two sub-connectors, and the at least two sub-connectors extend along the first direction. By extending the two sub-connectors along the first direction, the connection of the battery cell in the first direction can be made more stable, further improving the connection stability of the battery cell in the first direction.

[0011] In some embodiments, the connector includes at least two sub-connectors, and the at least two sub-connectors extend in a direction intersecting the first direction. By extending the two sub-connectors in a direction intersecting the first direction, there is no specific limitation on the extension of the sub-connectors, which facilitates the connection between the sub-connectors and the battery cells.

[0012] In some embodiments, the connector includes multiple sub-connectors, and the multiple sub-connectors are arranged in any direction. By arranging the multiple sub-connectors in any position and in any direction, the connection process between the multiple sub-connectors and the battery cells can be simplified, and the connection structure can be made more stable.

[0013] In some embodiments, along the height direction of the battery cell, the minimum distance between the edge of the connector and the bottom surface of the battery cell is greater than or equal to the first preset distance. By setting the minimum distance between the edge of the connector and the bottom surface of the battery cell along the height direction of the battery cell to be greater than or equal to the first preset distance, the probability of the connector blocking the overflowing glue can be reduced, and the glue can enter the containing area more smoothly, thereby improving the safety performance of the battery.

[0014] In some embodiments, the battery further comprises another connector, which is disposed between two battery cells adjacent to each other in the first direction. By disposing another connector between two battery cells adjacent to each other in the first direction, the battery structure can be made more stable, thereby facilitating a more secure connection between the battery cells.

[0015] In some embodiments, another connecting member extends along outer circumferences of respective second surfaces of the two battery cells facing each other in the first direction, and forms notches at predetermined heights of the two battery cells.

[0016] The second embodiment of the present application provides an electrical device, which includes the battery in the above embodiment, and the battery is used to provide electrical energy. By extending another connector along the periphery of the corresponding second surfaces of the two battery cells facing each other in the first direction, and forming a notch at a predetermined height of the two battery cells, it is possible to ensure the span requirement of the connector on the second surface of the battery cell and the connection strength between the battery cells. At the same time, the notch is formed at a predetermined height of the two battery cells, which is convenient for the arrangement of the sub-connector; further, it is also possible to improve the sealing between the sub-connectors, reduce the occurrence of lithium deposition due to stress concentration in the battery cells, and improve the overall safety performance of the battery.

[0017] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0019] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0020] Figure 2 A schematic diagram of the structure of a battery in some embodiments of the present application;

[0021] Figure 3 Schematic diagram of the cooperation between the battery cell and the connector provided in some embodiments of the present application Figure 1 ;

[0022] Figure 4 Schematic diagram of the cooperation between the battery cell and the connector provided in some embodiments of the present application Figure 2 ;

[0023] Figure 5 Schematic diagram of the cooperation between the battery cell and the connector provided in some embodiments of the present application Figure 3 ;

[0024] Figure 6 Schematic diagram of the cooperation between the battery cell and the connector provided in some embodiments of the present application Figure 4 ;

[0025] Figure 7 Schematic diagram of the cooperation between the battery cell and the connector provided in some embodiments of the present application Figure 5 .

[0026] Description of reference numerals:

[0027] 1000. Vehicles;

[0028] 100, battery; 200, controller; 300, motor;

[0029] 110, box body; 111, accommodating cavity; 120, battery cell; 130, connecting member; 131, sub-connecting member; 121, first surface; 122, second surface;

[0030] X, first direction; Y, second direction; Z, height direction. DETAILED DESCRIPTION

[0031] The following embodiments of the technical solution of the present application will be described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0033] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0034] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations 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. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0035] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0036] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0037] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0038] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0039] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding, and the requirements for battery performance are also constantly improving.

[0040] The battery includes a battery cell and a box. The battery cell and the box can be fixed by applying glue to the bottom wall of the box and then sticking the battery cell to the bottom of the box. In this way, only one side of the battery cell is fixed to the box, and the fixation between the two is not firm. When the battery cell is used, if it is impacted or hit, the battery cell may shift or shake, which may affect the safety of use.

[0041] Based on this, in order to increase the reliability of the battery cell fixation, the adjacent battery cells can be connected by a connector, and the connector is arranged in a whole piece. However, when the battery cell and the box are extruded and bonded by glue, in order to ensure that the glue fully bonds the battery cell, it is necessary to apply excessive glue when applying glue to the bottom of the battery cell during the extrusion and shaping process, resulting in excessive glue from the bottom of the battery cell through the gap between adjacent battery cells (including the R angle contact point) during the extrusion and shaping process of the battery cell. Due to the excessive glue, the space at the R angle position is not enough to accommodate the excess glue. And because the connector is arranged in a whole piece, the accommodation area formed between the corresponding surfaces facing each other of the two battery cells is small, and it is also impossible to accommodate excess glue, so that the glue overflowing upward will enter between the large surfaces of the battery cell from the joint of the large surface connector of the battery cell, resulting in local stress in the battery cell during the cycle expansion process, resulting in insufficient expansion space for the battery cell, thereby affecting the safety performance of the battery.

[0042] Based on the above considerations, the present application proposes a battery, wherein the connector is arranged in a non-integral form, so that a receiving area is formed between the corresponding first surfaces of the two battery cells facing each other in a second direction intersecting the thickness direction of the battery cells, thereby accommodating glue overflowing during the process of extruding and molding the battery cells into the housing cavity of the box; the connector is arranged in a non-integral form, so that the receiving area can provide a larger space below the predetermined height of the two battery cells than the space between the corresponding first surfaces when the connector is arranged in a whole piece. The receiving area can accommodate more glue, thereby reducing the probability of glue exceeding the predetermined height and entering the corresponding second surfaces of the two battery cells facing each other in the first direction, thereby effectively reducing the occurrence of stress concentration and lithium deposition during the cyclic expansion of the battery cells, thereby improving the safety performance of the battery.

[0043] The battery disclosed in the embodiment of the present application can be used in, but not limited to, electrical devices such as vehicles, ships or aircraft. A power supply system comprising the battery cells and batteries disclosed in the present application can be used to form the electrical device, which is conducive to reducing the probability of glue exceeding a predetermined height and entering between two battery cells, thereby effectively reducing the stress concentration of the battery cells during the cyclic expansion process and the occurrence of lithium deposition, thereby improving the safety performance of the battery.

[0044] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0045] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0046] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 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 an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000, for example, the battery 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0047] In some embodiments of the present application, the battery 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0048] Figure 2 A schematic diagram of the structure of a battery provided in some embodiments of the present application, Figure 3 Schematic diagram of the cooperation between the battery cell and the connector provided in some embodiments of the present application Figure 1 .

[0049] The battery 100 includes a housing 110, a plurality of battery cells 120, and a connector 130. The housing 110 has a housing cavity 111; the plurality of battery cells 120 are disposed in the housing cavity 111, and the plurality of battery cells 120 are arranged along a first direction X and a second direction Y, wherein the first direction X is a thickness direction of the battery cells 120, and the second direction Y intersects the first direction X; the connector 130 is disposed between two battery cells 120 adjacent to each other in the second direction Y, and the connector 130 is arranged in a non-integral form, so that an accommodation area is formed between corresponding first surfaces 121 of the two battery cells 120 facing each other in the second direction Y, and the accommodation area provides a larger space below a predetermined height of the two battery cells 120 than the space between the corresponding first surfaces 121 when the connector 130 is arranged in an integral form.

[0050] In the example, the box 110 is used to provide a housing cavity 111 for the battery cell 120, and the box 110 can adopt a variety of structures. In some embodiments, the box 110 can be a hollow structure with one end open, and the box 110 can be in a variety of shapes, such as a cylinder, a cuboid, etc. The inside of the box 110 can be layered or not. The material of the box 110 can be metal material, non-metal material, etc.

[0051] In the battery 100, there may be multiple battery cells 120. Multiple rows of battery cells 120 may be arranged along the first direction X, and multiple rows of battery cells 120 may also be arranged along the second direction Y. Multiple battery cells 120 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that multiple battery cells 120 are connected in series and in parallel. Multiple battery cells 120 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 120 may be accommodated in the box body 110; of course, the battery 100 may also be a battery module formed by connecting multiple battery cells 120 in series, in parallel, or in a mixed connection, and then the multiple battery modules may be connected in series, in parallel, or in a mixed connection to form a whole, which is arranged in the accommodating cavity 111. Each battery cell 120 may be a secondary battery or a primary battery; it may also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 120 may be a rectangular parallelepiped or a cube. In Figure 3 In the example, the first surface 121 may also be referred to as a “side surface”, and the second surface 122 may also be referred to as a “large surface” having a larger area than the first surface 121 .

[0052] In the related art, the battery cells 120 and the box body 110 can be bonded by extrusion with glue and then solidified. In order to ensure that the glue fully bonds the battery cells 120, excessive glue needs to be applied when applying glue to the bottom of the battery cells 120 during the extrusion and shaping process. However, during the extrusion and shaping process of the battery cells 120, the excess glue will overflow through the R-angle contact points between adjacent battery cells 120. Due to the excessive glue application, the space at the R-angle position is not enough to accommodate the excess glue, resulting in the glue easily overflowing to the surface of the battery cells 120.

[0053] In the example, the connector 130 can be any insulating structural member such as a rubber strip that can connect the battery cells 120. A connector 130 can be provided between every two adjacent battery cells 120 in the plurality of battery cells 120. A connector 130 can also be provided between two adjacent battery cells 120 in some of the plurality of battery cells 120.

[0054] The connector 130 is disposed between two battery cells 120 adjacent to each other in the second direction Y, and is used to connect the two battery cells 120 adjacent to each other in the second direction Y. The connector 130 is arranged in a whole piece form, which means that the connector 130 continuously covers most of the area of ​​the first surface 121 of the battery cell 120 (for example, other areas except for the area corresponding to the blue film at one or more edges of the first surface 121). The connector 130 is arranged in a non-whole piece form, which means that the connector 130 covers part of the area of ​​the first surface 121 of the battery cell 120 at intervals. When the connector 130 is arranged in a non-whole piece form, the connector 130 may include a plurality of sub-connectors 131, and the sub-connectors 131 may extend along the height direction Z of the battery cell 120, the sub-connectors 131 may extend along the first direction X, and the sub-connectors 131 may also extend along a direction intersecting the first direction X.

[0055] In the example, the predetermined height can be the distance from the position where there is a gap between the sub-connectors 131 (that is, the joint of the sub-connectors 131) along the height direction of the battery cell 120 to the bottom surface of the battery cell 120 when the connector 130 is arranged on the second surface 122 (large surface) of the battery cell 120.

[0056] In the example, the connector 130 can connect the corresponding first surfaces 121 of the two battery cells 120 facing each other in the second direction Y, so that a receiving area is formed between the corresponding first surfaces 121 of the two battery cells 120 facing each other in the second direction Y. The receiving area plays a role of receiving glue overflowing from the battery cells 120 during the process of being extruded and bonded to the bottom surface of the box body 110. The connector 130 is arranged in a non-integral form. Compared with the connector 130 arranged in an integral form in the related art, the receiving area provides a larger space below the predetermined height of the two battery cells 120 than the space between the corresponding first surfaces 121 when the connector 130 is arranged in an integral form, so that the receiving area can receive more glue below the predetermined height.

[0057] In the embodiment of the present application, the connector 130 is arranged in a non-integral form, so that a receiving area is formed between the corresponding first surfaces 121 of the two battery cells 120 facing each other in the second direction Y intersecting the thickness direction (first direction X) of the battery cells 120, thereby accommodating the glue overflowing during the process of extruding and shaping the battery cells 120 into the accommodating cavity 111 of the box body 110; the connector 130 is arranged in a non-integral form, so that the receiving area can provide a larger space below the predetermined height of the two battery cells 120 than the space between the corresponding first surfaces 121 when the connector 130 is arranged in a whole piece. The receiving area can accommodate more glue, thereby reducing the probability of the glue exceeding the predetermined height and entering the corresponding second surfaces 122 of the two battery cells 120 facing each other in the first direction X, thereby effectively reducing the occurrence of stress concentration and lithium deposition in the battery cells 120 during the cyclic expansion process, thereby improving the safety performance of the battery.

[0058] According to some embodiments of the present application, the maximum dimension of the orthographic projection of the connector 130 on the first plane in the height direction Z of the battery cell 120 is greater than or equal to half the height value of the battery cell 120, wherein the first plane is a plane perpendicular to the second direction Y.

[0059] In the example, the maximum size of the orthographic projection of the connector 130 on the first plane in the height direction Z of the battery cell 120 refers to the distance between the two points of the orthographic projection of the connector 130 on the first plane that are farthest apart in the height direction Z of the battery cell 120. If the maximum size of the orthographic projection of the connector 130 on the first plane in the height direction Z of the battery cell 120 is too small, the connection of two adjacent battery cells 120 connected by the connector 130 in the height direction Z will be unstable. If the maximum size of the orthographic projection of the connector 130 on the first plane in the height direction Z of the battery cell 120 is too large, the connector 130 will occupy too large an area of ​​the first surface 121, so that the area of ​​the accommodation area will be too small, which will cause the glue to overflow from the accommodation area to other surfaces of the battery cell 120.

[0060] Figure 3 Schematic diagram of the cooperation between the battery cell and the connector provided in some embodiments of the present application Figure 1 ,like Figure 3 As shown, the maximum dimension h of the orthographic projection of the connector 130 on the first plane in the height direction Z of the battery cell 120 is h, and the height value of the battery cell 120 is H. The maximum dimension h of the orthographic projection of the connector 130 on the first plane in the height direction Z of the battery cell 120 is greater than or equal to half of the height value H of the battery cell 120, that is, h≥1 / 2H.

[0061] In the embodiment of the present application, by making the maximum dimension of the orthographic projection of the connecting member 130 on the first plane in the height direction Z of the battery cell 120 greater than or equal to half the height value of the battery cell 120, the connection strength and connection stability of two adjacent battery cells 120 in the height direction Z can be improved, thereby improving the structural stability of the battery.

[0062] According to some embodiments of the present application, the maximum dimension of the orthographic projection of the connector 130 on the first plane in the thickness direction (first direction X) of the battery cell 120 is greater than or equal to half of the thickness value of the battery cell 120, wherein the first plane is a plane perpendicular to the second direction Y.

[0063] In the example, the maximum size of the orthographic projection of the connector 130 on the first plane in the thickness direction (first direction X) of the battery cell 120 refers to the distance between the two points of the orthographic projection of the connector 130 on the first plane that are farthest apart in the thickness direction (first direction X) of the battery cell 120. If the maximum size of the orthographic projection of the connector 130 on the first plane in the thickness direction (first direction X) of the battery cell 120 is too small, the connection of two adjacent battery cells 120 connected by the connector 130 in the thickness direction (first direction X) will be unstable. If the maximum size of the orthographic projection of the connector 130 on the first plane in the thickness direction (first direction X) of the battery cell 120 is too large, the area of ​​the first surface 121 occupied by the connector 130 will be too large, so that the area of ​​the accommodation area will be too small, which will cause the glue to overflow from the accommodation area to other surfaces of the battery cell 120.

[0064] Figure 3 Schematic diagram of the cooperation between the battery cell and the connector provided in some embodiments of the present application Figure 1 ,like Figure 3As shown, the maximum dimension d of the orthographic projection of the connector 130 on the first plane in the thickness direction (first direction X) of the battery cell 120 is d, and the thickness value of the battery cell 120 is D. The maximum dimension d of the orthographic projection of the connector 130 on the first plane in the thickness direction (first direction X) of the battery cell 120 is greater than or equal to half of the thickness value D of the battery cell 120, that is, d≥1 / 2D.

[0065] In the embodiment of the present application, by making the maximum dimension of the orthographic projection of the connecting member 130 on the first plane in the thickness direction (first direction X) of the battery cell 120 greater than or equal to half the thickness value of the battery cell 120, the connection strength and connection stability of two adjacent battery cells 120 in the thickness direction (first direction X) can be improved, thereby improving the structural stability of the battery.

[0066] According to some embodiments of the present application, the connector 130 includes at least two sub-connectors 131 , at least one sub-connector 131 extends along a height direction Z of the battery cell 120 , and at least one sub-connector 131 extends along a first direction X.

[0067] In an example, the connector 130 may include at least two sub-connectors 131 , and the shapes and sizes of the at least two sub-connectors 131 may be the same or different.

[0068] For example, Figure 4 Schematic diagram of the cooperation between the battery cell and the connector provided in some embodiments of the present application Figure 2 ,like Figure 4 As shown, the connector 130 includes two sub-connectors 131 . Both sub-connectors 131 are in the shape of long strips. One sub-connector 131 extends along the height direction Z of the battery cell 120 , and the other sub-connector 131 extends along the first direction X.

[0069] In the embodiment of the present application, by extending at least one sub-connector 131 along the height direction Z of the battery cell 120 and at least one sub-connector 131 along the first direction X, the connection strength between two adjacent battery cells 120 in the height direction Z of the battery cell 120 can be ensured, and the connection strength between two adjacent battery cells 120 in the thickness direction (first direction X) of the battery cell 120 can be ensured, thereby improving the structural stability of the battery 100.

[0070] According to some embodiments of the present application, the connector 130 includes at least two sub-connectors 131 , and the at least two sub-connectors 131 extend along the first direction X.

[0071] In an example, the connector 130 may include at least two sub-connectors 131, and the shapes and sizes of the at least two sub-connectors 131 may be the same or different. The sub-connectors 131 may be a strip-shaped structure.

[0072] For example, Figure 3 Schematic diagram of the cooperation between the battery cell and the connector provided in some embodiments of the present application Figure 1 ,like Figure 3 As shown, the connecting member 130 includes two sub-connecting members 131 . The two sub-connecting members 131 are both in the shape of long strips, and the two sub-connecting members 131 extend along the first direction X.

[0073] In the embodiment of the present application, by extending both sub-connectors 131 along the first direction X, the connection of the battery cell 120 in the first direction X can be made more stable, further improving the connection stability of the battery cell 120 in the first direction X.

[0074] According to some embodiments of the present application, the connector 130 includes at least two sub-connectors 131 , and the at least two sub-connectors 131 extend along a direction intersecting the first direction X.

[0075] In an example, the connector 130 may include at least two sub-connectors 131, and the shapes and sizes of the at least two sub-connectors 131 may be the same or different. The sub-connectors 131 may be a strip-shaped structure.

[0076] For example, Figure 5 Schematic diagram of the cooperation between the battery cell and the connector provided in some embodiments of the present application Figure 3 ,like Figure 5 As shown, the connecting member 130 includes two sub-connecting members 131 . The two sub-connecting members 131 are both in the shape of long strips. The two sub-connecting members 131 extend along a direction intersecting the first direction X.

[0077] In the embodiment of the present application, the two sub-connectors 131 are extended in a direction intersecting the first direction X without any specific limitation on the extension of the sub-connectors 131 , thereby facilitating the connection between the sub-connectors 131 and the battery cells 120 .

[0078] According to some embodiments of the present application, the connector 130 includes a plurality of sub-connectors 131 , and the plurality of sub-connectors 131 are arranged in any direction.

[0079] In an example, the shapes and sizes of the plurality of sub-connectors 131 may be the same or different, and the plurality of sub-connectors 131 may be arranged at any position and in any direction.

[0080] For example, Figure 6Schematic diagram of the cooperation between the battery cell and the connector provided in some embodiments of the present application Figure 4 ,like Figure 6 As shown, the connector 130 includes five sub-connectors 131 . The five sub-connectors 131 may be circular in shape, have different sizes, and be arranged in any direction.

[0081] In the embodiment of the present application, by arranging the plurality of sub-connectors 131 at any position and in any direction, the connection process between the plurality of sub-connectors 131 and the battery cells 120 can be simplified and the connection structure can be made more stable.

[0082] According to some embodiments of the present application, along the height direction Z of the battery cell 120 , the minimum distance between the edge of the connector 130 and the bottom surface of the battery cell 120 is greater than or equal to the first preset distance.

[0083] In the example, when the minimum distance between the edge of the connector 130 and the bottom surface of the battery cell 120 is too small, the connector 130 will block the glue from entering the receiving area, so that the glue cannot smoothly enter the receiving area and overflows to other surfaces of the battery cell 120. Therefore, in order to reduce the probability of glue overflow, the minimum distance between the edge of the connector 130 and the bottom surface of the battery cell 120 needs to be greater than or equal to the first preset distance.

[0084] In the embodiment of the present application, by setting the minimum distance between the edge of the connecting member 130 and the bottom surface of the battery cell 120 along the height direction Z of the battery cell 120 to be greater than or equal to the first preset distance, the probability of the connecting member 130 blocking the overflowing glue can be reduced, and the glue can enter the containing area more smoothly, thereby improving the safety performance of the battery.

[0085] According to some embodiments of the present application, the battery further includes another connector 130 , and the other connector 130 is disposed between two battery cells 120 adjacent to each other in the first direction X.

[0086] In an example, the other connecting member 130 may be an integrated structural member, or the other connecting member 130 may be formed by combining a plurality of sub-connecting members 131 .

[0087] In the embodiment of the present application, by providing another connector 130 between two adjacent battery cells 120 in the first direction X, the battery structure can be made more stable, thereby facilitating a more secure connection between the battery cells 120 .

[0088] According to some embodiments of the present application, another connector 130 extends along the circumferences of the corresponding second surfaces 122 of the two battery cells 120 facing each other in the first direction X, and forms notches at predetermined heights of the two battery cells 120 .

[0089] In the example, the other connector 130 can be designed as an integral body or can be connected after being separated. When the other connector 130 is connected after being separated, the other connector 130 can include multiple sub-connectors 131, which can be connected end to end in sequence and extend around the periphery of the second surface 122 without any joint gaps between them. The other connector and the battery cell 120 can be connected to each other by bonding or other methods.

[0090] For example, Figure 7 Schematic diagram of the cooperation between the battery cell and the connector provided in some embodiments of the present application Figure 5 ,like Figure 7 As shown, another connector 130 includes four sub-connectors 131, wherein three sub-connectors 131 are sequentially connected to each other and extend around the periphery of the second surface 122 without any joint gaps between them, and a gap is formed at a predetermined height of two battery cells 120. Another sub-connector 131 is arranged along the upper edge of the second surface 122.

[0091] In the embodiment of the present application, by extending another connector 130 along the outer periphery of the corresponding second surfaces 122 of the two battery cells 120 facing each other in the first direction X, and forming a gap at a predetermined height of the two battery cells 120, it is possible to ensure the span requirement of the connector 130 on the second surface 122 of the battery cell 120 and the connection strength between the battery cells 120, and at the same time, form a gap at a predetermined height of the two battery cells 120 to facilitate the setting of the sub-connector 131; further, it is also possible to improve the sealing between the sub-connectors 131, reduce the occurrence of stress concentration and lithium deposition in the battery cell 120, and improve the overall safety performance of the battery 100.

[0092] The embodiment of the present application further provides an electrical device, which includes a battery 100 in any embodiment, and the battery 100 is used to provide electrical energy.

[0093] In the embodiments of the present application, the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0094] By adopting the battery 100 in the embodiment of the present application, the safety performance of the battery 100 can be improved, thereby improving the safety performance of the electrical device.

[0095] The technical solution of the present application is further described below by means of a specific embodiment. Figures 1 to 7 As shown,

[0096] The battery 100 includes a housing 110, a plurality of battery cells 120, and a connector 130. The housing 110 has a housing cavity 111; the plurality of battery cells 120 are disposed in the housing cavity 111, the plurality of battery cells 120 are arranged along a first direction X and a second direction Y, the first direction X is the thickness direction of the battery cells 120 (the first direction X), and the second direction Y intersects the first direction X; the connector 130 is disposed between two adjacent battery cells 120 in the second direction Y, the connector 130 is arranged in a non-integral form, along the height direction Z of the battery cells 120, the minimum distance between the edge of the connector 130 and the bottom surface of the battery cells 120 is greater than or equal to a first preset distance, so that a housing area is formed between the corresponding first surfaces 121 of the two battery cells 120 facing each other in the second direction Y, and the housing area provides a larger space below the predetermined height of the two battery cells 120 than the space between the corresponding first surfaces 121 when the connector 130 is arranged in an integral form.

[0097] The maximum dimension of the orthographic projection of the connector 130 on the first plane in the height direction Z of the battery cell 120 is greater than or equal to half of the height value of the battery cell 120, and the maximum dimension of the orthographic projection of the connector 130 on the first plane in the thickness direction (first direction X) of the battery cell 120 is greater than or equal to half of the thickness value of the battery cell 120, wherein the first plane is a plane perpendicular to the second direction Y.

[0098] In one example, the connector 130 includes at least two sub-connectors 131 , at least one sub-connector 131 extends along a height direction Z of the battery cell 120 , and at least one sub-connector 131 extends along a first direction X.

[0099] In one example, the connector 130 includes at least two sub-connectors 131 , and the at least two sub-connectors 131 extend along the first direction X.

[0100] In one example, the connector 130 includes at least two sub-connectors 131 , and the at least two sub-connectors 131 extend along a direction intersecting the first direction X.

[0101] In another example, the connector 130 includes a plurality of sub-connectors 131 , and the plurality of sub-connectors 131 are arranged in any direction.

[0102] The battery further includes another connector 130 disposed between two battery cells 120 adjacent to each other in the first direction X. The other connector 130 extends along the circumference of the corresponding second surfaces 122 of the two battery cells 120 facing each other in the first direction X, and forms a notch at a predetermined height of the two battery cells 120 .

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery, characterized in that: include: A box body having a containing cavity; A plurality of battery cells are disposed in the accommodating cavity, and the plurality of battery cells are arranged along a first direction and a second direction, wherein the first direction is a thickness direction of the battery cells, and the second direction intersects the first direction; A connector is disposed between two battery cells adjacent to each other in the second direction, and the connector is arranged in a non-integrated form so that a receiving area is formed between corresponding first surfaces of the two battery cells facing each other in the second direction, and the receiving area provides a larger space below a predetermined height of the two battery cells than the space between the corresponding first surfaces when the connector is arranged in an integral form.

2. The battery according to claim 1, characterized in that The maximum dimension of the orthographic projection of the connecting member on the first plane in the height direction of the battery cell is greater than or equal to half of the height value of the battery cell, wherein the first plane is a plane perpendicular to the second direction.

3. The battery according to claim 2, characterized in that The maximum dimension of the orthographic projection of the connector on the first plane in the thickness direction of the battery cell is greater than or equal to half of the thickness of the battery cell, wherein the first plane is a plane perpendicular to the second direction.

4. The battery according to claim 2, characterized in that The connector includes at least two sub-connectors, at least one of which extends along a height direction of the battery cell, and at least one of which extends along the first direction.

5. The battery according to claim 2, characterized in that The connecting member includes at least two sub-connecting members, and the at least two sub-connecting members both extend along the first direction.

6. The battery according to claim 2, characterized in that The connecting member includes at least two sub-connecting members, and the at least two sub-connecting members extend along a direction intersecting the first direction.

7. The battery according to claim 2, characterized in that The connecting member includes a plurality of sub-connecting members, and the plurality of sub-connecting members are arranged in any direction.

8. The battery according to any one of claims 1 to 7, characterized in that Along the height direction of the battery cell, the minimum distance between the edge of the connecting member and the bottom surface of the battery cell is greater than or equal to a first preset distance.

9. The battery according to any one of claims 1 to 7, characterized in that Another connecting member is also included, and the other connecting member is arranged between two battery cells adjacent to each other in the first direction.

10. The battery according to claim 9, characterized in that The another connection member extends along the outer circumferences of the respective second surfaces of the two battery cells facing each other in the first direction, and forms notches at the predetermined height of the two battery cells.

11. An electrical device, characterized in that: The electrical device comprises the battery according to any one of claims 1 to 10, wherein the battery is used to provide electrical energy.

Images