Battery and electrical device

Abstract

The present application discloses a battery and an electrical device. The battery according to an embodiment of the present application includes: a box body having opposite top and bottom portions in a first direction; a battery cell, which is placed upside down in the box body and connected to the top portion, the battery cell includes electrode terminals, and the electrode terminals are arranged away from the top portion in the first direction; a current collecting component for electrically connecting the electrode terminals of at least two of the battery cells; a protection assembly disposed between the bottom portion and the current collecting component, and the protection assembly is used to support the battery cell and insulate the battery cell from the bottom portion. The battery provided by the embodiment of the present application can improve the strength and safety of the battery.

Description

Technical Field

[0001] The present application relates to the field of batteries, and particularly to a battery and an electrical device using the same. Background Art

[0002] With the joint development of technologies in the vehicle field and the battery field, the driving methods of vehicles in the current market are gradually increasing. In order to reduce pollution and costs, the market share of electric-driven vehicles is also gradually increasing. On this basis, in order to reduce the chassis thickness and increase the internal space of electric-driven vehicles, a technology of integrating the battery with the chassis has emerged. During the driving of the vehicle, the bottom of the battery may be impacted by the outside world, causing the battery to deform during use, and thus there is a potential safety hazard of triggering a safety accident.

[0003] Therefore, there is an urgent need for a battery with high safety performance and a corresponding electrical device. Summary of the Invention

[0004] The present application provides a battery and an electrical device using the same. The battery therein has a relatively high top strength, which can improve the safety factor.

[0005] In a first aspect, the present application provides a battery, including: a box body having opposite top and bottom in a first direction; battery cells inverted and placed in the box body and connected to the top, the battery cells including electrode terminals, and the electrode terminals are arranged away from the top in the first direction; a busbar component for electrically connecting the electrode terminals of at least two battery cells; a protection component arranged between the bottom and the busbar component, and the protection component is used to support the battery cells and insulate the battery cells from the bottom.

[0006] In the battery provided in the embodiment of the present application, the battery cells are inverted inside the box body. By connecting the flat bottom surface of the battery cell without electrode terminals to the top of the box body and arranging a support protection component between the battery cell and the bottom of the box body, it is possible to avoid the collision of components such as electrode terminals in the battery cell with other components when the battery is impacted by the outside world, and the battery cell is connected to the top of the box body, which can avoid the collision between the battery cell and the top of the box body when the battery is impacted at the bottom, thereby effectively improving the strength of the top end of the battery and ensuring the overall safety of the battery.

[0007] According to one aspect of the embodiment of the present application, the battery cell is adhesively fixed to the top. By adhesively bonding the bottom of the battery to the top, the strength of the top of the battery can be further improved.

[0008] According to one aspect of the embodiment of the present application, the top includes a top plate and a frame, the frame surrounds a plurality of battery cells, and the frame is used to connect the top plate and the bottom. The frame surrounding the battery cells can provide side protection for the battery cells and improve safety.

[0009] According to one aspect of the embodiments of the present application, the protection component includes a plurality of protection members extending in the second direction. The plurality of protection members are spaced apart in the third direction, and the battery cells are in contact with the protection members. The first direction, the second direction, and the third direction intersect each other. The protection component may include a plurality of protection members, which are respectively in contact with a plurality of battery cells, so as to keep a certain distance between the battery cells and the bottom of the box body, and reduce the impact of the bottom impact on the battery.

[0010] According to one aspect of the embodiments of the present application, the orthographic projection of the electrode terminal on the bottom is located between the orthographic projections of the adjacent protection members on the bottom. After the battery cells are lifted by the protection component, the electrode terminals falling between the adjacent protection components can avoid being damaged by impact.

[0011] According to one aspect of the embodiments of the present application, the plurality of protection members include edge protection members, first protection members, and second protection members. Along the third direction, the edge protection members are arranged on both side edges of the battery cell assembly arranged in an array, and the first protection members and the second protection members are alternately distributed between the two edge protection members. By arranging protection members at the edges, corner collisions and damages can be avoided, and the alternately arranged first protection members and second protection members can cooperate with the setting of the busbar component to form an electrically safe connection loop.

[0012] According to one aspect of the embodiments of the present application, along the second direction, the extension length of the first protection member is greater than that of the second protection member. Between the second protection members with shorter extension lengths, connecting members for electrically connecting the battery cells to each other in the busbar component can be arranged, so as to provide protection for the connecting members through the protection component and improve the reliability of the electrical connection.

[0013] According to one aspect of the embodiments of the present application, along the third direction, the width of the first protection member is greater than that of the second protection member, and the width of the second protection member is greater than that of the edge protection member. Each first protection member can be in contact with two adjacent battery cells at the same time to improve the processing efficiency.

[0014] According to one aspect of the embodiments of the present application, the extension length of the protection component in the first direction is greater than 1.5 mm. Extending the protection component in the first direction by more than a certain length can effectively improve the electrical performance safety inside the battery when the bottom of the battery is impacted.

[0015] According to one aspect of the embodiments of the present application, the protection component further includes a connecting plate, and the plurality of protection members are respectively arranged on the surface of the connecting plate facing the top. The plurality of protection members can be connected to the connecting plate. Through the connecting plate, the relative positions between the plurality of protection components can be stabilized, and the insulation performance between the busbar component and the bottom of the box body can be improved.

[0016] According to one aspect of the embodiments of the present application, the connection between the frame and the top plate is a welded connection, a hot melt self-tapping screw connection, an adhesive connection, a fastener connection, or an integrally formed setting. The connection between the frame and the top plate can be a fixed connection or an integrally formed setting to improve the connection strength of the overall structure.

[0017] According to one aspect of the embodiments of the present application, the protection component is adhesively fixed to the battery cell. The lower end of the battery cell can be adhesively fixed to the protection component to further improve the overall connection strength.

[0018] According to one aspect of the embodiments of the present application, the battery cell further includes a pressure relief mechanism, and the pressure relief mechanism is arranged on the same side as the electrode terminal. Arranging the pressure relief mechanism on the lower side of the battery cell can also protect the electrode terminal together with it, improving safety.

[0019] According to one aspect of the embodiments of the present application, the orthographic projection of the pressure relief mechanism on the bottom is located between the orthographic projections of adjacent protection members on the bottom. Similar to the electrode terminal, arranging the pressure relief valve between adjacent protection members can reduce the probability of the pressure relief mechanism being impacted by collision.

[0020] According to one aspect of the embodiments of the present application, the protection component is made of an insulating material, or the protection component is coated with an insulating coating. The protection component can electrically insulate the bus bar component from the bottom of the box body, avoiding the bottom of the box body being stimulated by the outside and affecting the electrical connection between the battery cells.

[0021] According to one aspect of the embodiments of the present application, the battery further includes an adapter plate and an adapter. The adapter plate is arranged on one side of the box body and protrudes from the box body. The adapter plate is connected to the bottom to form a receiving portion, and the adapter is arranged in the receiving portion and connected to the adapter plate. Arranging the adapter in the receiving portion can protect the adapter through the box body and reduce the probability of the adapter being damaged by collision.

[0022] In a second aspect, the present application provides an electrical device including the battery according to any one of the embodiments in the first aspect.

[0023] In the technical solution provided by the embodiments of the present application, the battery module is inverted in the box body, and the flat bottom surface of the battery module itself is fixedly connected to the top of the battery box body. At the same time, a protection component is arranged between the battery cell and the bottom of the box body to support the battery cell, thereby improving the structural strength inside the battery and preventing safety problems when the battery is collided or squeezed, thus improving the overall safety factor of the battery. Description of the Drawings

[0024] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the following detailed description of the preferred embodiments. The drawings are only for the purpose of illustrating the preferred embodiments and are not considered to be a limitation of the present application. Moreover, in all the drawings, the same reference numerals are used to denote the same components. In the drawings:

[0025] Figure 1 Schematic structural diagram of a vehicle provided by some embodiments of the present application;

[0026] Figure 2 Schematic structural diagram of a battery provided by some embodiments of the present application;

[0027] Figure 3 Exploded view of a battery provided by an embodiment of the present application;

[0028] Figure 4 Schematic structural diagram of the bottom provided by an embodiment of the present application;

[0029] Figure 5 Schematic cross-sectional view of a battery provided by an embodiment of the present application;

[0030] Figure 6 Schematic structural diagram of a battery cell provided by another embodiment of the present application;

[0031] Figure 7 Schematic cross-sectional view of a battery provided by an embodiment of the present application;

[0032] Figure 8 is Figure 7 Enlarged view of area A in;

[0033] Figure 9 Schematic structural diagram of a protection component provided by an embodiment of the present application;

[0034] Figure 10 Schematic structural diagram of a battery provided by yet another embodiment of the present application.

[0035] The reference numerals in the specific embodiments are as follows:

[0036] 1000 - Vehicle; 2000 - Battery; 3000 - Controller; 4000 - Motor;

[0037] 100 - Box body; 200 - Battery cell; 300 - Busbar component; 400 - Protection component;

[0038] 10 - Top; 20 - Bottom; 30 - Electrode terminal; 40 - Protective part; 50 - Connection plate; 60 - Pressure relief mechanism; 70 - Adapter plate; 80 - Adapter; 90 - Accommodating part;

[0039] 11 - Top plate; 12 - Frame; 41 - Edge guard; 42 - First guard; 43 - Second guard;

[0040] X - Second direction; Y - Third direction; Z - First direction. Detailed implementation

[0041] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, so they are only examples and cannot be used to limit the protection scope of the present application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill 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" and any variations thereof in the description of the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0043] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, "a plurality of" means more than two, unless otherwise clearly and specifically defined.

[0044] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0045] In the description of the embodiments of this application, the term "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0046] In the description of the embodiments of this application, the term "a plurality of" refers to more than two (including two). Similarly, "a plurality of groups" refers to more than two groups (including two groups), and "a plurality of sheets" refers to more than two sheets (including two sheets).

[0047] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of the present application.

[0048] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside 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 specific circumstances.

[0049] With the development and innovation of technologies in the battery field, power batteries are currently more widely used in the market. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in electric transportation such as electric bicycles, electric motorcycles, and electric vehicles, as well as in multiple fields such as military equipment and aerospace. With the continuous expansion of the application fields of power batteries, the market demand is also continuously increasing. Taking electric transportation as an example, due to the large space required for the battery, existing electric vehicles usually set the battery at the chassis position. In order to expand the interior space of the vehicle, structures such as CTC (cell to chassis, battery-chassis integration) technology that integrate the battery with the vehicle chassis have emerged accordingly.

[0050] The applicant has noticed that the existing integrated design of the battery and the chassis usually connects and fixes the bottom of the battery cell to the bottom of the battery box, and at the same time sets connectors at the top to connect multiple battery cells to each other. At this time, if the bottom of the vehicle is scratched or impacted during driving, it is possible that the top of the battery cell collides with the top of the battery box, which is likely to cause damage to the battery itself and the connectors, etc. There is a possibility of fire and explosion when the impact is large, posing a safety hazard.

[0051] Based on the above considerations, in order to improve the strength of the battery top and enhance safety, the applicant proposes a battery, which includes a box body. Inside the box body, there are battery cells, a busbar component, and a protection component arranged in sequence. Among them, the battery cells are inverted and the bottom of the battery cells is connected to the top of the box body, thereby effectively improving the strength of the top of the battery box body. At the same time, a protection component is arranged between the battery cells and the bottom of the box body, which can prevent the battery and the connectors between the batteries from colliding with the bottom, further enhancing the safety of the battery.

[0052] The technical solutions described in the embodiments of this application are applicable to batteries and electrical devices using such batteries.

[0053] The electrical devices among them can be vehicles, mobile phones, portable devices, laptop computers, ships, spacecraft, electric toys, and electric tools, etc. Vehicles can be fuel vehicles, gas vehicles, or new energy vehicles. New energy vehicles can be pure electric vehicles, hybrid vehicles, or range-extended vehicles, etc.; Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; Electric toys include fixed or mobile electric toys, for example, game consoles, electric vehicle toys, electric ship toys, and electric airplane toys, etc.; Electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, for example, electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact electric drills, concrete vibrators, and electric planers, etc. The embodiments of this application do not impose special restrictions on the above-mentioned electrical devices.

[0054] It can be understood that the battery disclosed in the embodiments of this application can be but is not limited to being used in the aforementioned electrical devices such as vehicles, ships, or aircraft. The power supply system of the electrical device can be composed of the battery disclosed in this application. In this way, the impact on the battery caused by bottom impact can be avoided, and the safety and reliability of the battery can be improved. On this basis, in the following embodiments and accompanying drawings of this application, the battery is taken as an example of the power battery of a vehicle for illustration, but it should be understood that this application is not limited to this. The battery provided in the embodiments of this application can also be applied to other scenarios where the bottom may be impacted and protected together.

[0055] For the convenience of description in the following embodiments, the electrical device is also taken as an example of a vehicle for illustration.

[0056] Figure 1 It is a schematic structural diagram of a vehicle provided in some embodiments of this application. As Figure 1 shown, a battery 2000 is arranged inside the vehicle 1000. The battery 2000 can be arranged at the bottom, head, or tail of the vehicle 1000. The battery 2000 can be used for the power supply of the vehicle 1000. For example, the battery 2000 can be used as the operating power supply of the vehicle 1000.

[0057] The vehicle 1000 may further include a controller 3000 and a motor 4000. The controller 3000 is used to control the battery 2000 to supply power to the motor 4000, for example, for the working power requirements during the start, navigation, and driving of the vehicle 1000.

[0058] In some embodiments of the present application, the battery 2000 can not only serve as the operating power source of the vehicle 1000, but also as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0059] Please refer to Figures 2 to 6 , Figure 2 which is a schematic structural diagram of the battery provided in some embodiments of the present application, Figure 3 which is an exploded view of the battery provided in an embodiment of the present application, Figure 4 which is a schematic structural diagram of the bottom provided in an embodiment of the present application, Figure 5 which is a schematic sectional view of the battery provided in an embodiment of the present application, Figure 6 which is a schematic structural diagram of a battery cell provided in another embodiment of the present application.

[0060] The present application provides a battery 2000, including a box body 100, battery cells 200, a busbar component 300, and a protection component 400. The box body 100 has opposite top 10 and bottom 20 along the first direction Z. The battery cells 200 are placed upside down in the box body 100 and connected to the top 10. The battery cells 200 include electrode terminals 30, and the electrode terminals 30 are arranged away from the top 10 in the first direction Z. The busbar component 300 is used to be electrically connected to the electrode terminals 30 of at least two battery cells 200. The protection component 400 is arranged between the bottom 20 and the busbar component 300, and the protection component 400 is used to support the battery cells 200 and insulate the battery cells 200 from the bottom 20.

[0061] The battery 2000 provided by the embodiment of the present application has a box body 100 formed by buckling the top 10 and the bottom 20. Inside the box body 100, the battery cells 200, the busbar component 300, and the protection component 400 are sequentially arranged along the direction from the top 10 to the bottom 20. The busbar component 300 is respectively connected to a plurality of battery cells 200 and can form an electrical connection between the plurality of battery cells 200. The protection component is arranged between the battery cells 200 and the bottom 20, and can keep a certain distance between the battery cells 200 and the bottom 20, and at the same time make the two electrically insulated, so as to avoid adverse effects on the battery cells 200 when the bottom 20 is impacted by the outside or subject to electrical interference.

[0062] Among them, the box body 100 includes a top 10 and a bottom 20. In the embodiment of the present application, the top 10 and the bottom 20 can be detachably connected, so as to facilitate the setting of other components such as the battery cell 200 inside the box body 100. The detachable connection can be a screw connection, that is, through holes penetrating the bottom 20 can be provided at the connection positions of the bottom 20 and the top 10, corresponding screw holes can be provided at the corresponding positions of the top 10, and they are tightly connected by screws. Optionally, the top 10 can be integrally formed with components such as the vehicle chassis integrated with the battery 2000, thereby further improving the strength of the box body 100 and making the connection firm.

[0063] It can be understood that the box body 100 in the embodiment of the present application is used to accommodate and protect components such as the battery cell 200 placed inside. On this basis, the box body 100 can have different structures. In some alternative embodiments, the top 10 can be covered with the bottom 20 to jointly define a cavity for accommodating components such as the battery cell 200. Among them, the top 10 can be a hollow structure with one end open, and at the same time, the bottom 20 can be a plate-like structure and cover the open side of the top 10 to form a corresponding cavity for accommodating components such as the battery cell 200; or, both the top 10 and the bottom 20 can be hollow structures with one side open, that is, the interface surface of the top 10 and the bottom 20 can be located in the middle of the battery cell 200. At this time, the open side of the top 10 is joined to the open side of the bottom 20 to form a corresponding cavity for accommodating components such as the battery cell 200. Of course, the top 10 and the bottom 20 can be in various shapes, such as a cylinder, a cuboid, etc., as long as the two can match and connect with each other.

[0064] In order to improve the sealing performance after the connection between the top 10 and the bottom 20, in the embodiment of the present application, the top 10 and the bottom 20 can be connected by flanging, or a sealing member such as sealant, sealing ring, etc. can also be provided at the connection position.

[0065] The battery cell 200 in the embodiment of the present application is used to store and provide electric energy. Multiple battery cells 200 can be set in the box body 100 at the same time, and the multiple battery cells 200 can be arranged in an array. Optionally, in the battery 2000, there can be multiple battery cells 200. If there are multiple battery cells 200, the multiple battery cells 200 can be connected in series, in parallel or in a hybrid connection. The hybrid connection means that there are both series and parallel connections among the multiple battery cells 200. The multiple battery cells 200 can be directly connected in series, in parallel or in a hybrid connection together. Of course, it is also possible that multiple battery cells 200 are first connected in series, in parallel or in a hybrid connection to form a battery module, and then multiple battery modules are connected in series, in parallel or in a hybrid connection to form a whole and are accommodated inside the box body 100.

[0066] In the embodiment of the present application, the battery cell 200 is installed in an inverted posture, that is, the flat bottom surface of the battery cell 200 opposite to the top surface provided with the electrode terminal 30 is connected to the top 10, so that the electrode terminal 30 is located on the side away from the top 10. Thereby, the strong structural strength at the top of the battery 2000 can be effectively improved, and the space utilization rate inside the box 100 can be increased by connecting the bottom of the battery cell 200 to the top 10, thereby improving the overall energy density of the battery 2000.

[0067] In the embodiment of the present application, the busbar component 300 is connected to the battery cell 200. The busbar component 300 can be a CCS (Cells Contact System) component, that is, an integrated wire harness composed of a flexible circuit board, a plastic structural member, a busbar, etc., and is used to form the required electrical connection relationship between multiple battery cells 200. The battery cell 200 can be charged and discharged through the busbar component 300. Optionally, in the embodiment of the present application, the busbar component 300 can be welded to the electrode terminal 30 of the battery cell 200, so that the connection between the busbar component 300 and the battery cell 200 is fixed.

[0068] Optionally, the busbar component 300 in the embodiment of the present application can include multiple components, each component is respectively connected to the battery module formed by the battery cells 200, and then these components are electrically connected to form the required series / parallel / hybrid connection relationship. Or, the busbar component 300 in the embodiment of the present application can also be integrally arranged, and each battery cell 200 is respectively connected through the same component.

[0069] In the embodiment of the present application, the protection component 400 is arranged between the bottom 20 and the busbar component 300, and is used to support the battery cell 200, that is, the protection component 400 can be in contact with the partial area of the battery cell 200 not covered by the busbar component 300 and the bottom 20 on the upper and lower sides respectively, so as to provide a supporting force for the battery cell 200 in the first direction Z. At the same time, the protection component 400 can make there be a certain gap between the battery cell 200 and the bottom 20 and they do not contact each other. Furthermore, the busbar component 300 connected to the battery cell 200 also keeps a certain distance from the bottom 20, insulating the busbar component 300 and the battery cell 200 from the bottom 20, and preventing the exposed bottom 20 from being interfered by the external environment and causing electrical interference to the battery cell 200 and the busbar component 300.

[0070] Furthermore, the protection component 400 can have a flat surface extending perpendicular to the first direction Z, so as to provide an additional protection layer on the bottom 20 of the box 100 and further reduce the impact on the battery cell 200 and the busbar component 300 when the bottom 20 is hit.

[0071] In the battery 2000 provided by the embodiment of the present application, the battery cell 200 is inverted inside the box body. By connecting the flat bottom of the battery cell 200 without other components to the top 10 of the box body 100, the structural strength of the top of the whole battery 2000 can be improved. At the same time, a protection component 400 is also provided between the bottom 20 of the box body 100 and the bus bar component 300. The protection component 400 can provide a supporting effect for the battery cell 200, so that there is a certain distance between both the battery cell 200 and the bus bar component 300 and the bottom 20, thereby ensuring the safety of the whole battery 2000 in case of a bottom impact.

[0072] In some optional embodiments, the battery cell 200 is adhesively fixed to the top 10.

[0073] The battery cell 200 in the embodiment of the present application can be fixedly connected to the top 10. Specifically, it can be adhesively fixed. By means of adhesive connection, the dimension required in the first direction Z when connecting the battery cell 200 to the top 10 can be reduced, and the overall thickness of the battery 2000 can be decreased. By fixedly connecting the battery 200 to the top 10, the strength of the top of the battery can be further improved.

[0074] In some optional embodiments, the top 10 includes a top plate 11 and a frame 12. The frame 12 surrounds a plurality of battery cells 200 and is used to connect the top plate 11 and the bottom 20.

[0075] The box body 100 in the embodiment of the present application includes a top 10 and a bottom 20 that are snap-fitted to each other. On this basis, the top 10 can be composed of two parts, namely a top plate 11 and a frame 12. The top plate 11 can extend along a plane perpendicular to the first direction Z, and the top plate 11 can be integrated on components such as the chassis to be connected of the battery 2000; the frame 12 is parallel to the first direction Z and surrounds components such as the battery cell 200. At the same time, the frame 12 and the top plate 11 can be fixedly connected or detachably connected. Optionally, the frame 12 in the embodiment of the present application can extend a distance greater than the distances extended by the battery cell 200, the bus bar component 300, and the protection component 400 in the first direction Z. At this time, the bottom 20 can be covered at the lower end of the frame 12. The frame 12 surrounding the battery cell 200 can provide side protection for the battery cell 200, improve its safety, and is more convenient for processing.

[0076] Please refer to Figures 7 to 9 , Figure 7 , which is a cross-sectional view of the battery provided by an embodiment of the present application, Figure 8 is Figure 7 an enlarged view of area A in Figure 9 and is a structural diagram of the protection component provided by an embodiment of the present application.

[0077] In some alternative embodiments, the protection component 400 includes a plurality of protection members 40 extending along the second direction X. The plurality of protection members 40 are spaced apart in the third direction Y. The battery cells 200 are in contact with the protection members 40. The first direction Z, the second direction X, and the third direction Y intersect with each other.

[0078] The protection component 400 in the embodiment of the present application may include a plurality of protection members 40. These protection members 40 are respectively in contact with a plurality of battery cells 200, so that a certain distance is maintained between the battery cells 200 and the bottom 20 of the box body 100, reducing the impact of the impact on the bottom 20 on the battery 2000.

[0079] Optionally, the protection member 40 in the embodiment of the present application may be in contact with the surface of the battery cell 200 where the electrode terminal 30 is provided. Specifically, it may be in contact with the portion of the surface of each battery cell 200 where the electrode terminal 30 is provided, excluding the area where the electrode terminal 30 is located, that is, the "shoulder" located on both sides of the electrode terminal 30 in the first direction Y. On this basis, the protection member 40 needs to be arranged at a corresponding position with the battery cell 200. The plurality of battery cells 200 in the embodiment of the present application may be arranged in an array. Correspondingly, the protection member 40 may extend along the second direction X and be arranged in the third direction Y to form a strip-shaped structure arranged at intervals in parallel. Except for the protection members 40 located at the edges, other protection members 40 may be arranged at the positions where adjacent battery cells 200 are in contact, that is, each protection member 40 may be in contact with two adjacent battery cells 200 arranged in the third direction Y at the same time.

[0080] Optionally, the first direction Z, the second direction X, and the third direction Y in the embodiment of the present application may be perpendicular to each other in pairs, forming a relatively regular and easy-to-process structure.

[0081] In some alternative embodiments, the orthographic projection of the electrode terminal 30 on the bottom 20 is located between the orthographic projections of the adjacent protection members 40 on the bottom 20.

[0082] The protection component 400 in the embodiment of the present application includes a plurality of protection members 40. These protection members 40 are in contact with the battery cells 200. The orthographic projection of the electrode terminal 30 in the battery cell 200 on the bottom 20 may be located between the adjacent protection members 40. At this time, the protection member 40 is in contact with the shoulder of the battery cell 200, which can ensure that the connection between the electrode terminal 30 and the bus bar component 300 is not hindered by the protection component 400. After the battery cell 200 is lifted by the protection component 400, the electrode terminal 30 falling between the adjacent protection members 40 can disperse the impact force generated to a plurality of battery cells 200, avoiding damage to the electrode terminal 30 due to impact.

[0083] In some alternative embodiments, the plurality of protective members 40 include an edge protective member 41, a first protective member 42, and a second protective member 43. Along the third direction Y, the edge protective member 41 is disposed at the edge of the assembly formed by the battery cells 200 arranged in an array, and the first protective member 42 and the second protective member 43 are alternately distributed between the two edge protective members 41.

[0084] The protective member 40 in the embodiment of the present application may include three protective members respectively disposed at different positions, wherein the edge protective member 41 is disposed at the edge position of the battery cell 200, and the first protective member 42 and the second protective member 43 are alternately disposed between the edge protective members 41. The first protective member 42 and the second protective member 43 may have different sizes to cooperate with various different connectors in the bus bar component 300 and provide the required space for the connection between adjacent battery cells 200.

[0085] Optionally, the protective member 40 in the embodiment of the present application may include a plurality of different sizes, and the sizes of the respective protective members 40 are correspondingly adjusted according to the length of the battery cell 200 and the positions of the electrode terminals 30 and the pressure relief structure 60 thereon. When each protective member 40 abuts against a plurality of battery cells 200, each protective member 40 may abut between two adjacent battery cells 200. At this time, the distance between the first protective member 42 and the second protective member 43 may be approximately the same as the length of the battery cell 200 itself. The alternately arranged first protective member 42 and second protective member 43 can cooperate with the setting of the bus bar component 300 to form a safe and reliable electrical connection circuit.

[0086] In some alternative embodiments, along the second direction X, the extension length of the first protective member 42 is greater than the extension length of the second protective member 43.

[0087] As described above, the first protective member 42 and the second protective member 43 in the embodiment of the present application may have different lengths in their own extension directions. A hard connector such as a bus bar for electrical connection may be provided between the battery cells 200 through the gap between adjacent second protective members 43. Two adjacent battery cells 200 in the third direction Y are electrically connected through this connector, that is, by adjusting the length of the second protective member 43 and the distance between adjacent second protective members 43 in the second direction X to avoid the hard connectors in the bus bar component 300.

[0088] Optionally, according to the position of the connecting member between the battery cells 200, the first protective member 42 may have an extension length along the second direction X that is the same as the length of the inner cavity of the box body 100 in this direction, that is, it integrally and completely extends inside the box body 100. Alternatively, the first protective member 42 may be provided with a break opening in the second direction X to provide a corresponding connecting member at the break opening. Arranging the connecting member in the busbar component 300 at the break opening of the protective member 40 can also keep the connecting member at a certain distance from the bottom 20 to form impact protection and maintain insulation.

[0089] In some alternative embodiments, along the third direction Y, the width of the first protective member 42 is greater than the width of the second protective member 43, and the width of the second protective member 43 is greater than the width of the edge protective member 41.

[0090] The protective member 40 in the embodiment of the present application may include an edge protective member 41 provided at the edge and a first protective member 42 and a second protective member 43 alternately arranged between the edge protective members 41. The edge protective member 41 abuts against only one battery cell 200, so its width may be smaller than that of the first protective member 42 and the second protective member 43, while the first protective member 42 and the second protective member 43 may be provided at the connection of adjacent battery cells 200 and abut against multiple battery cells 200 at the same time. Making each first protective member 42 abut against two adjacent battery cells 200 at the same time can reduce the number of required protective members 40, thereby improving production efficiency.

[0091] Optionally, in the battery 2000 provided by the embodiment of the present application, the width and position of each protective member 40 in the protective component 400 can be designed according to the position and size of the partial area in the battery cell 200 that cannot be overlapped with the protective component 400. Specifically, the width of the protective member 40 can be selected according to the pressure that the battery cell 200 can bear and the magnitude of the expected possible impact, and then the setting position of the protective member 40 can be selected according to the positions of the electrode terminal 30 and the pressure relief mechanism 60.

[0092] In some alternative embodiments, the extension length of the protective component 400 in the first direction Z is greater than 1.5 mm.

[0093] In the embodiment of the present application, the protection component 400 needs to extend a certain dimension in the first direction Z, that is, each protection member 40 needs to have a certain thickness. The protection component 400 is used to provide impact protection for the battery cell 200 from the lower side. Therefore, the relationship between the thickness of the protection component 400 itself and the impact energy has a great impact on whether safety problems such as fire and explosion will occur in the battery 2000. On this basis, the protection component 400 needs to have a certain basic thickness to provide corresponding protection strength. Exemplarily, the overall thickness of the protection component 400 in the embodiment of the present application can be greater than 1.5 mm.

[0094] In some alternative embodiments, the protection component 400 further includes a connecting plate 50, and a plurality of protection members 40 are respectively disposed on the surface of the connecting plate 50 facing the top 10.

[0095] In the embodiment of the present application, a plurality of protection members 40 can be connected and arranged on the same connecting plate 50, and the connecting plate 50 is disposed close to the bottom 20. Through the connecting plate 50, the relative positions of the plurality of protection members 40 can be made stable, avoiding dislocation after being impacted. At the same time, the connecting plate 50 can be arranged to extend in the same direction as the bottom 20 and abut against the bottom 20, or can be further limited by a groove provided on the bottom 20. The connecting plate 50 is disposed between the protection member 40 and the bottom 20 and has a relatively large extended coverage area, thereby improving the insulation performance between the busbar component 300 and the bottom 20 of the battery cell 200 and the box body 100. Optionally, in order to provide the required protection strength, the thickness of the connecting plate 50 can be greater than 0.5 mm.

[0096] In some alternative embodiments, the frame 12 and the top plate 11 are connected by welding, heat fusion self-tapping screw connection, adhesive connection or integrally formed.

[0097] The box body 100 in the embodiment of the present application may include a top plate 11, a frame 12 and a bottom 20, wherein the frame 12 is disposed around the circumference of the battery cell 200. At the same time, in order to improve the overall strength of the box body 100, the frame 12 and the top plate 11 can be fixedly connected, and the connection part can be welded, FDS (Flow drill screw) connection or adhesive connection. The present application does not make a specific limitation on this, as long as there is sufficient connection strength between the top plate 11 and the frame 12.

[0098] In some alternative embodiments, the protection component 400 is adhesively fixed to the battery cell 200.

[0099] In the embodiment of the present application, the protective assembly 400 abuts against the shoulder of the battery cell 200. At this point, the two can be bonded together to further improve the overall strength and stability of the connection, and to prevent misalignment between the protective assembly 400 and the battery cell 200 due to impact. Optionally, each protective member 40 in the protective assembly 400 can be bonded to a corresponding position on the battery cell 200, or at least some of the protective members 40, including the edge protective members 41, can be bonded to the battery cell 200.

[0100] like Figure 6 As shown, in some optional embodiments, the battery cell 200 further includes a pressure relief mechanism 60 , which is disposed on the same side as the electrode terminal 30 .

[0101] The battery cell 200 in the embodiment of the present application may also have a pressure relief mechanism 60. This mechanism can create a weak point when high pressure is generated and the battery cell 200 expands, allowing internal pressure exceeding a certain threshold to be released through this weak point, thereby preventing serious safety issues such as explosion of the battery cell 200 as a whole. Furthermore, the pressure relief mechanism 60 should be as safe as possible from collisions. Placing the pressure relief mechanism 60 on the underside of the battery cell 200 can protect it and the electrode terminals 30 from collisions with the casing 100 and other components, thereby improving the overall safety and reliability of the battery 2000.

[0102] In some optional embodiments, the orthographic projection of the pressure relief mechanism 60 on the bottom 20 is located between the orthographic projections of adjacent protective elements 40 on the bottom 20 .

[0103] As mentioned above, the battery cell 200 in the embodiment of the present application also includes a pressure relief mechanism 60. When the battery cell 200 is matched with the protective component 400, the pressure relief mechanism 60 can be set to be located between the areas where the adjacent protective parts 40 and the battery cell 200 abut each other, that is, the pressure relief mechanism 60 is set on the side close to the bottom 20 and does not contact the protective component 400. In this way, when subjected to external impact, the impact force can be dispersed to the shoulder of the battery cell 200, thereby avoiding damage to the pressure relief mechanism 60 by collision, thereby improving the safety of the battery 2000.

[0104] In some optional embodiments, the protective component 400 is made of an insulating material, or the protective component 400 is coated with an insulating coating.

[0105] The protection component 400 in the embodiment of the present application is disposed between the busbar component 300 and the bottom 20, and is used to support the battery cell 200 and insulate both the battery cell 200 and the busbar component 300 from the bottom 20, so as to avoid being electrically interfered by the external environment. On this basis, the protection component 400 can be made of an insulating material as a whole, so as to ensure a good insulation effect; or, the protection component 400 can be a conductive material with a certain strength coated with an insulating coating, so as to improve the strength of the protection component 400 itself, optimize the protection effect, and further improve the overall impact bearing capacity of the battery 2000 on the bottom.

[0106] Please refer to Figure 10 , Figure 10 which is a schematic structural diagram of a battery provided by another embodiment of the present application. In some alternative embodiments, the battery 2000 further includes an adapter board 70 and an adapter 80. The adapter board 70 is disposed on one side of the box body 100 and protrudes from the box body 100. The adapter board 70 is connected to the bottom 20 to form a receiving portion 90, and the adapter 80 is disposed in the receiving portion 90 and connected to the adapter board 70.

[0107] The battery 2000 in the embodiment of the present application may further include an adapter board 70 and an adapter 80, wherein the adapter board 70 is connected to the box body 100. The box body 100 has a relative top 10 and bottom 20 along the first direction Z. The battery cell 200, the busbar component 300, and the protection component 400 are sequentially disposed in the box body 100. The adapter board 70 protrudes from one side of the box body 100 along the third direction Y and is connected to the top 10 with a step in the first direction Z to form a receiving portion 90. The adapter 80 is disposed in the receiving portion 90 and connected to the adapter board 70, and the adapter 80 does not extend beyond the extension plane of the bottom 20 in the third direction Y.

[0108] The adapter board 70 in the embodiment of the present application is a boss protruding from one side of the box body 100 along the third direction Y, and it is connected to the bottom 20 with a step in the first direction Z. Specifically, it means that the adapter board 70 has a difference in extension dimension from the box body 100 in the first direction Z. The receiving portion 90 is a space formed by this thickness difference and composed of the surface where the adapter board 70 and the box body 100 are in contact, for the adapter 80 to be disposed therein, and the extension dimension of the adapter 80 in the first direction Z is less than or equal to the extension dimension of the box body 100.

[0109] The adapter board 70 in the embodiment of the present application can be perpendicular to the extension direction of the side wall of the box body 100 or have a certain included angle, but cannot extend parallel to the box body 100, so as to dispose the adapter 80 in the receiving portion 90 between the adapter board 70 and the box body 100.

[0110] In the third direction Y, the adapter plate 70 protrudes from one side of the box body 100 and is connected to the bottom 20 of the box body 100 with a step in the first direction Z to form a receiving portion 90, that is, the receiving portion 90 is a receiving space jointly formed by the adapter plate 70 and the box body 100. Setting the adapter 80 in the receiving portion 90 can protect the adapter 80 and reduce the impact force on the adapter 80 during a collision. Moreover, in the first direction Z, the adapter 80 may not exceed the extension dimension of the box body 100, so that the adapter 80 is completely located within the receiving portion 90, avoiding contact with external devices located circumferentially around the battery 100 and reducing the impact of external shocks on the process of electrically connecting the battery cells 200 to external devices by the adapter 80.

[0111] In some embodiments of the present application, the surface of the adapter plate 70 facing away from the receiving portion 90 may be on the same horizontal plane as the surface of the top plate 11 facing away from the frame 12, that is, the adapter plate 70 may be on the same horizontal plane as the top surface of the box body 100. When the adapter plate 70 is integrally provided with the box body 100, the adapter plate 70 may be formed by horizontally stretching the top plate of the box body 100 outward. When integrating the battery 2000 with an external device such as a vehicle chassis, the adapter plate 70 and the top plate 11 may be fixed to the same surface of the external device, or the adapter plate 70 and the top plate 11 may be integrally integrated with the same external device. Setting the surfaces of the adapter plate 70 and the top plate 11 on the same horizontal plane can increase the stress intensity of the above two, further improving the bearing capacity and top strength of the battery 2000.

[0112] Optionally, the adapter plate 70 has a certain thickness in the first direction Z. When a collision occurs at the bottom or side of the battery 2000, the surface of the adapter plate 70 facing away from the box body 100 may be subject to a certain impact force. On this basis, setting the adapter plate 70 to have a certain thickness can enhance the stiffness of the adapter plate 70 itself, and then play a better protective role for the adapter 80 through the receiving portion 90 jointly supported by the adapter plate 70 and the box body 100.

[0113] Optionally, the adapter plate 70 may be integrally formed with the box body 100, or the adapter plate 70 may be positioned and connected to the box body 100 by fixed connection methods such as welding connection, bonding connection or FDS connection. The present application does not make specific limitations on this.

[0114] The adapter board 70 in the embodiment of the present application has a first surface facing the accommodating part 90. At the same time, the box body 100 has a second surface facing the accommodating part 90. The first surface and the second surface can be perpendicular to each other, that is, the surface of the adapter board 70 where the adapter 80 is provided can be perpendicular to the side wall of the box body 100. By making the first surface and the second surface perpendicular to each other, the accommodating part 90 sandwiched therebetween can be maximized, and the installation space of the adapter 80 can be expanded.

[0115] Furthermore, the adapter 80 is connected to the first surface and is spaced from the second surface, that is, the adapter 80 can start from the adapter board 70 and extend along the first direction Z, so that it extends into the accommodating part 90 and does not contact the second surface, thereby reducing the possibility that the adapter 80 may be impacted in a collision. At the same time, adopting this structure can facilitate the electrical connection between the adapter 80 and other external devices, and compared with arranging the adapter 80 in the horizontal direction, this structure can enable the adapter 80 to have better stress performance.

[0116] In some alternative embodiments, the box body 100 may also be internally provided with a cooling channel. Based on the connection between the battery cell 200 and the top 10 of the box body 100, heat can be transferred by contact between the bottom of the battery cell 200 and the top 10. In order to further improve the performance of the battery 2000, a cooling channel may be provided at the position where the battery cell 200 is connected in the top 10, and a gas or liquid required for cooling flows through it, so as to achieve heat exchange with the battery 2000 during operation to play a role in cooling, thereby extending the overall service life of the battery 2000 and enabling it to be applicable to a wider range of uses.

[0117] Furthermore, in some alternative embodiments, the cooling channel may also be provided as a plurality of cooling plates between the battery cell 200 or the battery cell 200 and the box body 100. The inlets and outlets for the cooling medium to flow through these cooling plates can be connected in a unified manner and are connected to other components for storing, circulating, and releasing heat of the cooling medium through through holes provided on the box body 100. The present application does not make specific limitations on this.

[0118] Such as Figure 3As shown in the figure, an embodiment of the present application provides a battery 2000, which includes a box body 100. The box body 100 has a top 10 and a bottom 20 that are buckled with each other. Inside the box body 100, a battery cell 200, a busbar component 300, and a protection component 400 are sequentially arranged in the direction from the top 10 to the bottom 20. The battery cell 200 is inverted in the box body 100 and connected to the top 10. The electrode terminals 30 and the pressure relief mechanism 60 of the plurality of battery cells 200 arranged in an array are both arranged on the side close to the bottom 20. The busbar component 300 is electrically connected to at least two electrode terminals 30. The protection component 400 is used to support the battery cell 200 and insulate it from the bottom 20. The protection component 400 includes edge protection members 41 arranged on both sides in the third direction Y, and first protection members 42 and second protection members 43 alternately arranged between the edge protection members 41. Along the second direction X, the extension dimension of the second protection member 43 is less than or equal to that of the first protection member 42. Along the third direction Y, the width of the first protection member 42 is greater than or equal to the width of the second protection member 43, which is greater than or equal to the width of the edge protection member 41.

[0119] In a second aspect, an embodiment of the present application further provides an electrical device, including the battery 2000 in any one of the embodiments of the first aspect. As described above, the battery 2000 can be used as a driving power source or a control power source of the electrical device.

[0120] The electrical device provided by the embodiment of the present application has all the beneficial effects of the foregoing battery 2000. For specific descriptions of the battery 2000, reference can be made to the above embodiments. Details are not repeated herein.

[0121] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery, characterized in that, include: The box body has a top and a bottom opposite to each other along a first direction; a battery cell, placed upside down in the box and connected to the top, the battery cell including an electrode terminal, the electrode terminal being arranged away from the top in the first direction; a busbar component, configured to be electrically connected to the electrode terminals of at least two of the battery cells; a protective assembly disposed between the bottom and the current collecting component, the protective assembly being used to support the battery cell and insulate the battery cell from the bottom; The protective assembly includes a plurality of protective members extending along the second direction, the plurality of protective members are arranged at intervals in the third direction, the battery cells abut against the protective members, and at least one of the protective members abuts against two adjacent battery cells along the third direction, and the first direction, the second direction and the third direction are arranged to intersect with each other.

2. The battery according to claim 1, characterized in that, The battery cell is bonded and fixed to the top.

3. The battery according to claim 1, characterized in that, The top portion includes a top plate and a frame. The frame is disposed around the plurality of battery cells and is used to connect the top plate and the bottom portion.

4. The battery according to claim 1, characterized in that, The orthographic projection of the electrode terminal on the bottom is located between the orthographic projections of adjacent protection members on the bottom.

5. The battery according to claim 4, characterized in that, The plurality of protective members include edge protective members, first protective members, and second protective members. Along the third direction, the edge protective members are arranged on both side edges of the battery cell assemblies arranged in an array, and the first protective members and the second protective members are alternately distributed between the two edge protective members.

6. The battery according to claim 5, characterized in that, Along the second direction, an extension length of the first protection member is greater than an extension length of the second protection member.

7. The battery according to claim 6, characterized in that, Along the third direction, a width of the first guarding member is greater than a width of the second guarding member, and a width of the second guarding member is greater than a width of the edge guarding member.

8. The battery according to claim 6, characterized in that, An extension length of the protective component in the first direction is greater than 1.5 mm.

9. The battery according to claim 1, wherein, The protection assembly further includes a connecting plate, and the plurality of protection members are respectively arranged on a surface of the connecting plate facing the top.

10. The battery according to claim 3, characterized in that, The frame and the top plate are connected by welding, hot-melt self-tapping, bonding, fasteners or integral molding.

11. The battery according to claim 1, characterized in that, The protection component is bonded and fixed to the battery cell.

12. The battery according to any one of claims 1 to 11, characterized in that, The battery cell further includes a pressure relief mechanism, which is arranged on the same side as the electrode terminal.

13. The battery according to claim 12, characterized in that, The orthographic projection of the pressure relief mechanism on the bottom is located between the orthographic projections of adjacent protective elements on the bottom.

14. The battery according to any one of claims 1 to 11, characterized in that, The protective component is made of insulating material, or the protective component is coated with an insulating coating.

15. The battery according to any one of claims 1 to 11, characterized in that, The battery also includes an adapter plate and an adapter. The adapter plate is arranged on one side of the box body and protrudes from the box body. The adapter plate is connected to the bottom to form a accommodating portion. The adapter is arranged in the accommodating portion and connected to the adapter plate.

16. An electrical device, characterized in that, Comprising the battery according to any one of claims 1 to 15.

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