Battery and electric device

Abstract

The utility model discloses a battery and an electric device. The battery is configured to be connected with the bracket. The battery comprises a box body. The box body comprises a first box body and a second box body, the first box body and the second box body are connected with each other along a first direction, and the first box body and the second box body jointly define a cavity for accommodating a battery monomer. The first box body is provided with a first connecting face and a second connecting face which face the first direction, the first connecting face is connected with the second box body, and the second connecting face is used for being connected with a support. And the positions of the first connecting surface and the second connecting surface in the first direction are not overlapped. According to the technical scheme provided by the invention, the volume energy density of the battery can be improved.

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 development of battery technology, how to improve the energy density of batteries is a technical problem that needs to be solved urgently. Utility Model Content

[0004] The present application provides a battery and an electrical device. The technical solution provided in the present application can improve the volume energy density of the battery.

[0005] This application is achieved through the following technical solutions:

[0006] In a first aspect, the present application provides a battery, which is configured to be connected to a bracket. The battery includes a box. The box includes a first box and a second box, and the first box and the second box are connected to each other along a first direction, and the first box and the second box jointly define a chamber for accommodating a battery cell. The first box has a first connection surface and a second connection surface facing the first direction, the first connection surface is connected to the second box, and the second connection surface is used to connect to the bracket. The positions of the first connection surface and the second connection surface in the first direction do not overlap.

[0007] In the above scheme, by setting the first connecting surface and the second connecting surface to non-overlapping positions in the first direction, the connecting interface between the first box and the second box of the battery and the connecting interface between the battery and the bracket can be vertically offset. On the one hand, it can effectively reduce the risk of interference of the battery structure itself with the bracket or interference of the battery structure itself with the equipment performing the assembly action due to the small distance between the two connecting interfaces, thereby increasing the difficulty of assembling the battery and the bracket and affecting the efficiency of assembling the battery and the bracket. On the other hand, compared with the scheme of increasing the lateral dimension of the second connecting surface, by vertically offsetting the two connecting interfaces, the additional occupation of the lateral space by the second connecting surface can be effectively reduced, that is, the utilization rate of the lateral space by the box is improved, so that more battery cells can be loaded in the box, so that the battery has a higher volume energy density.

[0008] According to some embodiments of the present application, the second connecting surface is farther away from the chamber than the first connecting surface.

[0009] In the above scheme, the second connecting surface is on the outside, that is, the connecting interface between the battery and the bracket is on the outside, which can reduce the interference of the battery's own structure on the bracket, or the interference on the equipment performing the assembly action, thereby reducing the difficulty of assembling the battery to the bracket, so that the battery can be efficiently assembled on the bracket.

[0010] According to some embodiments of the present application, along the direction from the first box body to the second box body, the second connection surface exceeds the first connection surface.

[0011] The above scheme, by setting the second connecting surface to extend beyond the first connecting surface, can, on the one hand, reduce the interference of the battery's own structure on the bracket, or the interference on the equipment performing the assembly action, thereby reducing the difficulty of assembling the battery to the bracket, so that the battery can be efficiently assembled on the bracket; on the other hand, it can enable the first connecting surface to utilize the space below the bracket in the horizontal direction, and can increase the internal volume of the box, so as to load more battery cells, which is beneficial to the improvement of the battery volume energy density.

[0012] According to some embodiments of the present application, the first connection surface is provided with a first connection member, the first connection member is connected to the second box body, and along the direction from the first box body to the second box body, the first connection member does not extend beyond the second connection surface.

[0013] In the above scheme, by providing the first connection part, the first box body and the second box body can have a relatively stable connection relationship, so that the battery has a higher reliability. At the same time, by providing the first connection part not exceeding the second connection surface, the interference of the first connection part on the bracket or the interference of the equipment performing the assembly action can be reduced, thereby reducing the difficulty of assembling the battery on the bracket, so that the battery can be efficiently assembled on the bracket.

[0014] According to some embodiments of the present application, the first connecting surface is arranged along the circumference of the opening of the first box body, and there are multiple first connecting members, which are arranged at intervals along the circumference of the opening.

[0015] In the above solution, by arranging a plurality of first connectors along the circumferential direction of the opening of the first box body, the connection strength and sealing between the first box body and the second box body can be effectively improved, so that the battery structure is stable and has high reliability.

[0016] According to some embodiments of the present application, the second connection surface is provided with a first mounting hole, and the first mounting hole is used for allowing the mounting member to pass through to be connected to the bracket.

[0017] In the above solution, by providing the first mounting hole on the second connection surface, the mounting member can pass through the first mounting hole to conveniently and efficiently mount the battery on the bracket, thereby increasing the assembly efficiency between the battery and the bracket.

[0018] According to some embodiments of the present application, the second connection surface includes a first area and a second area, the first area is protruding from the second area, the first area is closer to the chamber than the second area, the first area protrudes from the second area and is located between two adjacent first connection members. At least part of the first mounting hole is located in the first area.

[0019] In the above scheme, by providing a first area that protrudes toward the inside of the box and is located between two adjacent first connecting parts, and at least a part of the first mounting hole is provided in the first area, it is possible to make the mounting part not interfere with the first connecting part, thereby improving the space utilization rate of the box, and making the battery have a higher volume energy density. In other words, the first connecting part can be displaced toward the outside without interfering with the mounting part, thereby widening the space inside the box to assemble more battery cells, thereby facilitating the improvement of the battery volume energy density.

[0020] According to some embodiments of the present application, the second box body is formed with an avoidance portion for avoiding the first area.

[0021] In the above solution, by providing an avoidance portion on the second box body, the influence of the mounting component on the second box body can be reduced, so that the structure between the second box body and the first box body is stable and has good sealing, thereby increasing the reliability of the battery.

[0022] According to some embodiments of the present application, the first box body further has a transition surface, and the first connection surface and the second connection surface are connected by the transition surface. The first connection surface, the second connection surface and the transition surface jointly define the receiving groove, and the first box body is provided with a drainage portion connecting the receiving groove and the outside.

[0023] In the above solution, by providing a drainage portion on the first box body, the accumulated liquid in the containing tank can be effectively discharged, reducing the risk of corrosion of the box body due to the accumulated liquid, so that the battery has higher reliability.

[0024] According to some embodiments of the present application, the drainage portion includes a drainage groove, one end of which passes through the transition surface along the second direction, and the other end of the drainage groove passes through the outer surface of the first box body, and the first direction and the second direction are perpendicular to each other.

[0025] In the above scheme, by providing a drainage groove that runs through the transition surface and the outer surface of the first box body, the accumulated liquid in the receiving groove can be effectively discharged, reducing the risk of corrosion of the box body due to the accumulated liquid, so that the battery has higher reliability.

[0026] According to some embodiments of the present application, along the first direction, the drainage groove extends from the first connecting surface to the second connecting surface.

[0027] In the above scheme, by setting the drainage groove to extend from the first connecting surface to the second connecting surface, on the one hand, the accumulated liquid in the receiving groove can be effectively discharged from the outside of the box body, and on the other hand, the molding direction of the drainage groove can be from the second connecting surface downward to the first connecting surface, which can reduce the molding difficulty of the drainage groove, improve the manufacturing efficiency of the box body, and then improve the manufacturing efficiency of the battery.

[0028] According to some embodiments of the present application, the width of the drainage groove is w, satisfying 4mm≤w≤15mm.

[0029] In the above scheme, by setting the width of the drainage groove to be not less than 4 mm, the accumulated liquid in the receiving groove can be quickly discharged, reducing the risk of corrosion of the box body; by setting the width of the drainage groove to be not more than 15 mm, the influence of the drainage groove on the structural strength of the first box body can be reduced, so that the reliability of the battery is high. To this end, by setting the width of the drainage groove to be not less than 4 mm and not more than 15 mm, the discharge efficiency of the accumulated liquid and the structural strength of the first box body can be taken into account, so that the battery has high reliability.

[0030] According to some embodiments of the present application, the first box body includes two first walls opposite to each other along the second direction and two second walls opposite to each other along the third direction, the first wall and the second wall are arranged adjacent to each other, and the first direction, the second direction and the third direction are perpendicular to each other. The first connecting surface includes a first sub-connecting surface and a second sub-connecting surface connected to each other, the first sub-connecting surface is formed on the first wall, and the second sub-connecting surface is formed on the second wall.

[0031] In the above scheme, on the one hand, the first box body is surrounded by two first walls and two second walls, which can enable the battery cells to effectively utilize the internal space of the box body, which is beneficial to the improvement of the battery volume energy density. On the other hand, the first connecting surface is formed on the first wall and the second wall, so that the first box body can be effectively connected to the second box body, thereby improving the connection stability and sealing of the first box body and the second box body, and making the battery more reliable.

[0032] According to some embodiments of the present application, the second connecting surface is formed on the first wall.

[0033] In the above solution, the second connection surface is arranged on the first wall so that the first wall is connected to the bracket, thereby improving the efficiency of assembling the battery on the bracket under the condition that the battery is stably connected to the bracket.

[0034] According to some embodiments of the present application, a length dimension of the first wall is greater than a length dimension of the second wall.

[0035] In the above solution, by arranging the second connection surface on the first wall with a larger length dimension, a larger connection area can be provided between the battery and the bracket, thereby improving the connection stability between the battery and the bracket, and allowing the battery to be stably mounted on the bracket.

[0036] In a second aspect, some embodiments of the present application further provide an electric device. The electric device comprises a device body and the battery provided in the first aspect. The device body has a bracket. The battery is connected to the device body through the bracket, and the battery is used to provide electrical energy to the device body.

[0037] In the above scheme, by vertically staggering the connection interface between the first box and the second box of the battery and the connection interface between the battery and the bracket, on the one hand, the interference of the battery's own structure with the bracket, or the interference with the equipment performing the assembly action, which increases the difficulty of assembling the battery and the bracket and affects the risk of assembly efficiency of the battery and the bracket, on the other hand, the lateral space utilization of the box can be improved, so that more battery cells can be loaded in the box, and the battery has a higher volume energy density.

[0038] According to some embodiments of the present application, the second connecting surface is provided with a first mounting hole, the bracket is provided with a second mounting hole, the first mounting hole and the second mounting hole are arranged correspondingly, and the battery passes through the first mounting hole and the second mounting hole through the mounting member to be mounted on the bracket.

[0039] In the above scheme, by setting the first mounting hole and the second mounting hole, the battery can be connected to the bracket in a mounting manner. On the one hand, it can improve the efficiency of assembling the battery on the bracket. On the other hand, the electrical device can be recharged by replacing the battery, so that the electrical device has a faster recharge efficiency.

[0040] According to some embodiments of the present application, the mounting member is rotatably disposed in the first mounting hole, and the mounting member is configured to be locked or unlocked to the bracket by rotation.

[0041] In the above solution, by rotating the mounting member, the battery can be locked to the bracket or unlocked to the bracket, so that the battery can be quickly replaced to increase the energy charging efficiency of the electrical device.

[0042] According to some embodiments of the present application, the second connection surface includes a first area and a second area, the first area is protruding from the second area, and the first area is closer to the chamber than the second area. The mounting member includes a rod body and at least two mounting portions, the mounting portions are protruding from the rod body along the radial direction of the rod body, and the second mounting hole is for the mounting portions to pass through. When the mounting member is locked to the bracket, at least one mounting member and the first area cooperate to clamp the bracket.

[0043] In the above scheme, by setting a first area that protrudes toward the inner side of the box body and is located between two adjacent first connecting parts, and the first area can cooperate with the mounting part to clamp the bracket, the mounting part can not interfere with the connecting component between the first box body and the second box body, thereby improving the space utilization of the box body and making the overall structure of the battery compact so as to have a higher volume energy density.

[0044] 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

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0046] Figure 1 A schematic diagram of a vehicle according to some embodiments of the present application;

[0047] Figure 2 Schematic diagram of a battery and a bracket in some embodiments of the present application;

[0048] Figure 3 A schematic diagram of a battery in some embodiments of the present application;

[0049] Figure 4 A schematic diagram of a partial structure of a battery in some embodiments of the present application;

[0050] Figure 5 for Figure 3 The enlarged view of point A in the middle;

[0051] Figure 6 for Figure 4 The enlarged view of point B in the middle;

[0052] Figure 7 Schematic diagram of the first wall and the second wall in some embodiments of the present application;

[0053] Figure 8 A schematic diagram of a first wall in some embodiments of the present application;

[0054] Fig. 9 for Figure 8 Enlarged view of point C in the middle;

[0055] Fig.10 for Figure 2Enlarged view of point D in the middle;

[0056] Fig.11 This is a schematic diagram of the partial structure of the bracket and battery in some embodiments of the present application.

[0057] Icon: 100-battery; 10-box; 11-first box; 110-first wall; 111-second wall; 12-second box; 120-avoidance part; 121-flange; 122-avoidance groove; 13-first connecting surface; 13a-first sub-connecting surface; 13b-second sub-connecting surface; 130-first connecting member; 14-second connecting surface; 140-first mounting hole; 141-first area; 142-second area; 15-transition surface; 16-accommodating groove; 17-drainage part; 170-drainage groove; 30-battery cell; 20-mounting member; 21-rod body; 22-hanging part; z-first direction; x-second direction; y-third direction; 1000-vehicle; 200-controller; 300-motor; 400-bracket; 401-second mounting hole. DETAILED DESCRIPTION

[0058] The following detailed description and drawings of the embodiments of the present application are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0063] 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).

[0064] In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "length", "width", "thickness", "up", "down", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, and does 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 cannot be understood as a limitation on the embodiments of the present application.

[0065] 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 ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0066] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include one or more battery cells. The battery cell includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer, the positive electrode active material layer is coated on the surface of the positive electrode collector, the positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer, and the positive electrode collector not coated with the positive electrode active material layer serves as a positive electrode ear. Taking lithium-ion batteries as an example, the material of the positive electrode collector may be aluminum, and the positive electrode active material may be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The negative electrode current collector not coated with the negative electrode active material layer protrudes from the negative electrode current collector coated with the negative electrode active material layer. The negative electrode current collector not coated with the negative electrode active material layer serves as a negative electrode ear. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon, etc. The material of the diaphragm can be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene), etc.

[0067] The battery also includes a box body, which includes a first box body and a second box body. The first box body and the second box body are connected, and the second box body closes the opening of the first box body to jointly form a closed space. The battery cell is arranged in the closed space to prevent liquid or other foreign matter from affecting the charging or discharging of the battery cell.

[0068] The electrical device mentioned in the embodiments of the present application can be used in, but not limited to, vehicles, ships, or aircraft, and the battery can provide electrical energy to the electrical device to enable the electrical device to work. In some embodiments, the electrical device includes a device body, the device body has a bracket, and the battery is assembled to the device body through the bracket. In some embodiments, the connection relationship between the battery and the bracket includes, but is not limited to, welding, clamping, screw connection, or mounting connection.

[0069] In recent years, electric vehicles have developed by leaps and bounds. In the field of electric vehicles, batteries, as the power source of electric vehicles, play an irreplaceable and important role. As the core component of electric vehicles, batteries have high requirements in terms of energy density.

[0070] At present, the battery is arranged at the bottom of the vehicle through a bracket. The box of the battery includes a first box and a second box connected to each other along a first direction, and the first box and the second box jointly define a chamber for accommodating a battery cell. The first box has a first connection surface and a second connection surface arranged toward the first direction. The first box is connected to the second box through the first connection surface, and the box is connected to the bracket through the second connection surface to realize the connection between the battery and the vehicle body. The distance between the battery structure itself and the bracket should not be too small, otherwise there will be interference between the battery structure itself and the bracket, or there will be interference between the battery structure itself and the device (such as a manipulator) for assembling the battery and the bracket, affecting the connection between the battery and the bracket. At present, the interference of the battery structure itself with the bracket is often reduced by increasing the lateral dimension of the second connection surface (lateral can refer to the direction perpendicular to the first direction, such as the second direction, and the first direction can be regarded as the vertical direction), or the interference of the battery structure itself with the device for assembling the battery and the bracket is reduced, so as to realize the smooth assembly of the battery and the bracket. However, the scheme of increasing the lateral dimension of the second connection surface will result in low utilization of the box space and affect the volume energy density of the battery.

[0071] In view of this, in order to reduce the interference of the battery structure itself on the bracket, affect the assembly efficiency of the battery and the bracket, and improve the volume energy density of the battery, some embodiments of the present application provide a battery, wherein the first box of the battery has a first connection surface and a second connection surface arranged in a first direction, the first connection surface is connected to the second box, and the second connection surface is used to connect to the bracket. The positions of the first connection surface and the second connection surface in the first direction do not overlap.

[0072] By arranging the first connection surface and the second connection surface to have non-overlapping positions in the first direction, the connection interface between the first box and the second box of the battery and the connection interface between the battery and the bracket can be vertically offset. On the one hand, it can effectively reduce the risk of interference of the battery structure itself with the bracket, or interference of the battery structure itself with the equipment performing the assembly action due to the small distance between the two connection interfaces, thereby increasing the difficulty of assembling the battery and the bracket and affecting the efficiency of assembling the battery and the bracket. On the other hand, compared with the solution of increasing the lateral dimension of the second connection surface, by vertically offsetting the two connection interfaces, the additional occupation of the lateral space by the second connection surface can be effectively reduced, that is, the utilization rate of the lateral space by the box is improved, so that more battery cells can be loaded in the box, so that the battery has a higher volume energy density.

[0073] The battery disclosed in the embodiment of the present application can be used in, but not limited to, vehicles, and can also be used in other electrical devices, wherein the battery can be connected to the device body through a bracket.

[0074] The battery disclosed in the embodiments of the present application can be used in, but is not limited to, vehicles, ships, or aircraft.

[0075] 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 computer, a laptop computer, an electric toy, an electric tool, an electric bicycle, an electric motorcycle, an electric car, a ship, a heavy truck, a bus, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, for example, 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.

[0076] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

[0077] Please refer to Figure 1 , Figure 1 Schematic diagram of a vehicle of some embodiments of the present application. 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. The type of vehicle 1000 may be a sedan, an off-road vehicle, a heavy truck or a bus, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom, the head or the 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, for the circuit system of the vehicle 1000, for example, for the working power requirements during the startup, navigation and operation of the vehicle 1000.

[0078] The vehicle 1000 may further include a controller 200 and a motor 300 , wherein the controller 200 is used to control the battery 100 to supply power to the motor 300 , for example, to meet the power requirements of starting, navigating, and driving the vehicle 1000 .

[0079] 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.

[0080] In some embodiments of the present application, the vehicle body of the vehicle 1000 has a bracket 400, and the bracket 400 can be connected to the battery 100. In some embodiments of the present application, the vehicle body has a longitudinal beam, and the bracket 400 is connected to the longitudinal beam.

[0081] Some embodiments of the present application provide a battery 100, see Figure 2-Figure 6 , Figure 2 This is a schematic diagram of a battery and a bracket in some embodiments of the present application. Figure 3 This is a schematic diagram of a battery in some embodiments of the present application. Figure 4 is a schematic diagram of a local structure of a battery in some embodiments of the present application, Figure 5 for Figure 3 The enlarged view of point A in the middle. Figure 6 for Figure 4 Enlarged view of point B in the middle.

[0082] The battery 100 is configured to be connected to the bracket 400. The battery 100 is configured to be connected to the bracket 400. The battery 100 includes a case 10. The case 10 includes a first case 11 and a second case 12. The first case 11 and the second case 12 are connected to each other along a first direction z, and the first case 11 and the second case 12 jointly define a chamber for accommodating a battery cell. The first case 11 has a first connection surface 13 and a second connection surface 14 facing the first direction z. The first connection surface 13 is connected to the second case 12, and the second connection surface 14 is used to connect to the bracket 400. The positions of the first connection surface 13 and the second connection surface 14 in the first direction z do not overlap.

[0083] The battery 100 can be connected to the device body of the power-consuming device through the bracket 400. Exemplarily, the power-consuming device is a vehicle, the frame of the vehicle is provided with the bracket 400, and the battery 100 is connected to the bracket 400 to provide power for the vehicle to travel. In some embodiments, the battery 100 is detachably connected to the bracket 400, so as to realize the battery replacement and energy replenishment of the vehicle.

[0084] The interior of the box 10 has a chamber for accommodating battery cells. In some embodiments, the box 10 may include a first box 11 and a second box 12, which are connected to each other to jointly define a chamber for accommodating battery cells, and the chamber is a closed space. Optionally, the first box 11 and the second box 12 may be hollow structures with one side open, and the open side of the first box 11 and the open side of the second box 12 cooperate with each other so that the first box 11 and the second box 12 jointly define a closed space; alternatively, the first box 11 may be a hollow structure with one end open, the second box 12 may be a plate-like structure, and the second box 12 is arranged on the open side of the first box 11, so that the first box 11 and the second box 12 jointly define a closed space. Optionally, the second box 12 may be a hollow structure with one end open, the first box 11 may be a plate-like structure, and the first box 11 is arranged on the open side of the second box 12, so that the first box 11 and the second box 12 jointly define a closed space. Optionally, the number of battery cells disposed in the closed space may be one or more.

[0085] For example, see Figure 4The battery 100 is provided with a plurality of battery cells 30, and the plurality of battery cells 30 can be connected in series, in parallel or in a hybrid connection. A hybrid connection means that the plurality of battery cells 30 are both connected in series and in parallel. The plurality of battery cells 30 can be directly connected in series, in parallel or in a hybrid connection, and then the whole formed by the plurality of battery cells 30 is accommodated in a closed space; of course, the battery 100 can also be a battery module formed by first connecting a plurality of battery cells 30 in series, in parallel or in a hybrid connection, and then the plurality of battery modules are connected in series, in parallel or in a hybrid connection to form a whole, and then accommodated in a closed space.

[0086] In some embodiments, the connection relationship between the first box body 11 and the second box body 12 includes but is not limited to welding, bonding, clamping, connection with a connecting member, etc. Exemplarily, the first box body 11 and the second box body 12 are connected by screws.

[0087] In some embodiments, the first box body 11 may be a lower box body 10, and the second box body 12 may be an upper cover. The vehicle frame includes two longitudinal beams, and the second box body 12 is formed with an avoidance groove 122, which can avoid the longitudinal beams of the vehicle, so that the battery cells in the box body 10 can use the space on the side of the longitudinal beams, so that the space utilization rate of the battery 100 is improved.

[0088] In some embodiments, the structural strength of the material of the first box body 11 may be greater than the structural strength of the second box body 12. In some embodiments, the density of the material of the first box body 11 may be greater than the density of the second box body 12. Exemplarily, the material of the first box body 11 includes but is not limited to aluminum alloy or stainless steel.

[0089] In some embodiments, the first direction z may be parallel to the gravity direction. “The first connecting surface 13 and the second connecting surface 14 facing the first direction z” may be understood as the plane where the first connecting surface 13 is located can be vertically passed through by the first direction z, and the plane where the second connecting surface 14 is located can be vertically passed through by the first direction z.

[0090] The first connection surface 13 is a surface where the first box body 11 is connected to the second box body 12. Exemplarily, the edge of the second box body 12 is provided with a flange 121, the flange 121 overlaps the first connection surface 13, the flange 121 is provided with a through hole, and the first connection surface 13 is correspondingly provided with a threaded hole, and a bolt passes through the through hole of the flange 121 and is screwed into the threaded hole, so that the first box body 11 and the second box body 12 are connected to each other.

[0091] In some embodiments, the first connection surface 13 may be arranged along the circumference of the opening of the first box body 11. In some embodiments, see Figure 7-Figure 9 , Figure 7 This is a schematic diagram of the first wall and the second wall in some embodiments of the present application. Figure 8This is a schematic diagram of the first wall in some embodiments of the present application. Fig. 9 for Figure 8 Enlarged view of point C in the middle.

[0092] The box body 10 is square, and the first box body 11 includes a bottom wall, two first walls 110 opposite to each other along the second direction x, and two second walls 111 opposite to each other along the third direction y. The first wall 110 and the second wall 111 are arranged adjacent to each other and are respectively arranged at the edge of the bottom wall. The first connecting surface 13 is annular, and the first connecting surface 13 includes a first sub-connecting surface 13a and a second sub-connecting surface 13b connected to each other. The first sub-connecting surface 13a is formed on the first wall 110, and the second sub-connecting surface 13b is formed on the second wall 111. The four edges of the second box body 12 are all provided with flanges 121, and the four flanges 121 are respectively overlapped on the first wall 110 and the second wall 111 and correspond to the first sub-connecting surface 13a and the second sub-connecting surface 13b.

[0093] The second connection surface 14 is the surface where the box 10 is connected to the bracket 400, that is, the part where the battery 100 is connected to the bracket 400. In some embodiments, the second connection surface 14 is formed at the end of the first wall 110 that is away from the bottom wall. In other embodiments, the second connection surface 14 is formed at the end of the second wall 111 that is away from the bottom wall. In other embodiments, the second connection surface 14 is formed at the end of the first wall 110 that is away from the bottom wall and the end of the second wall 111 that is away from the bottom wall.

[0094] In some embodiments, the connection relationship between the bracket 400 and the second connection surface 14 includes, but is not limited to, welding, clamping, bonding, connection with a connecting member, etc. In some embodiments, the second connection surface 14 is formed with a threaded hole, and the bracket 400 is connected to the threaded hole by a bolt to connect the battery 100. In some embodiments, the second connection surface 14 is provided with a first mounting hole 140, and the first mounting hole 140 can accommodate the mounting member 20, and the mounting member 20 passes through the opening of the first mounting hole 140 to be mounted on the bracket 400, thereby achieving the battery 100 being mounted on the bracket 400.

[0095] “The positions of the first connecting surface 13 and the second connecting surface 14 in the first direction z do not overlap” can be understood as that the first connecting surface 13 and the second connecting surface 14 are staggered in the first direction z. For example, the first direction z is the direction of gravity, and the first connecting surface 13 is below the second connecting surface 14, that is, the portion where the first box body 11 and the second box body 12 are connected to each other is below the portion where the battery 100 and the bracket 400 are connected to each other; for another example, the first direction z is the direction of gravity, and the first connecting surface 13 is above the second connecting surface 14, that is, the portion where the first box body 11 and the second box body 12 are connected to each other is above the portion where the battery 100 and the bracket 400 are connected to each other.

[0096] In the above scheme, by setting the first connecting surface 13 and the second connecting surface 14 to have non-overlapping positions in the first direction z, the connecting interface between the first box 11 and the second box of the battery 100 and the connecting interface between the battery 100 and the bracket 400 can be vertically offset. On the one hand, it can effectively reduce the risk of interference of the battery 100 structure itself with the bracket 400 due to the small distance between the two connecting interfaces, or interference of the battery 100 structure itself with the equipment performing the assembly action, thereby increasing the difficulty of assembling the battery 100 and the bracket 400 and affecting the assembly efficiency of the battery 100 and the bracket 400; on the other hand, compared with the scheme of increasing the lateral dimension of the second connecting surface 14, by vertically offsetting the two connecting interfaces, the additional occupation of the lateral space by the second connecting surface 14 can be effectively reduced, that is, the utilization rate of the lateral space of the box 10 is improved, and more battery cells can be loaded in the box 10, so that the battery 100 has a higher volume energy density.

[0097] According to some embodiments of the present application, the second connecting surface 14 is farther away from the chamber than the first connecting surface 13 .

[0098] In some embodiments, the second connection surface 14 is located outside the interior space of the box 10 relative to the first connection surface 13. Exemplarily, the edge of the first connection surface 13 facing away from the outer side of the box 10 forms an opening of the first box 11, and the second connection surface 14 is located outside the opening of the first box 11.

[0099] In some embodiments, the second connection surface 14 includes multiple areas, among which a part of the areas may be farther away from the chamber than the first connection surface 13; another part of the areas may be closer to the chamber than the first connection surface 13. Exemplarily, the second connection surface 14 includes an area protruding toward the inside of the box body 10, and the first connection surface 13 is formed with a recessed portion to avoid the area.

[0100] In the above scheme, the second connecting surface 14 is on the outside, that is, the connecting interface between the battery 100 and the bracket 400 is on the outside, which can reduce the interference of the structure of the battery 100 itself on the bracket 400, or the interference on the equipment performing the assembly action, thereby reducing the difficulty of assembling the battery 100 on the bracket 400, so that the battery 100 can be efficiently assembled on the bracket 400.

[0101] According to some embodiments of the present application, along the direction from the first box body 11 to the second box body 12 , the second connection surface 14 exceeds the first connection surface 13 .

[0102] In some embodiments, the battery 100 can be mounted below the bracket 400, and the second connection surface 14 extending beyond the first connection surface 13 can be understood as the second connection surface 14 being located above the first connection surface 13. Exemplarily, the lowest part of the second box body 12 overlaps the first connection surface 13, and the second connection surface 14 is higher than the lowest part of the second box body 12.

[0103] The above scheme, by setting the second connecting surface 14 to extend beyond the first connecting surface 13, can, on the one hand, reduce the interference of the structure of the battery 100 itself on the bracket 400, or the interference on the equipment performing the assembly action, thereby reducing the difficulty of assembling the battery 100 on the bracket 400, so that the battery 100 can be efficiently assembled on the bracket 400; on the other hand, it can enable the first connecting surface 13 to utilize the space below the bracket 400 in the horizontal direction, and can increase the internal volume of the box 10, so as to load more battery cells, which is beneficial to the improvement of the volume energy density of the battery 100.

[0104] In other embodiments, along the direction from the first box body 11 to the second box body 12, the first connection surface 13 exceeds the second connection surface 14. In these other embodiments, the battery 100 can be mounted below the bracket 400, the lowest part of the second box body 12 overlaps the first connection surface 13, and the second connection surface 14 is lower than the lowest part of the second box body 12.

[0105] According to some embodiments of this application, see Figure 5 The first connection surface 13 is provided with a first connection member 130 , and the first connection member 130 is connected to the second box body 12 . In the direction from the first box body 11 to the second box body 12 , the first connection member 130 does not extend beyond the second connection surface 14 .

[0106] The first connection member 130 is a connection component connecting the first box body 11 and the second box body 12. For example, the first connection member 130 may include a bolt, a screw, a rivet, or the like.

[0107] In some embodiments, the first connecting member 130 is a bolt. The edge of the second box body 12 is provided with a flange 121, and the flange 121 overlaps the first connecting surface 13. The flange 121 is provided with a through hole, and the first connecting surface 13 is correspondingly provided with a threaded hole. The screw of the first connecting member 130 passes through the through hole of the flange 121 and is screwed into the threaded hole, and the nut of the first connecting member 130 abuts against the flange 121, so that the first box body 11 and the second box body 12 are connected to each other.

[0108] “The first connecting member 130 does not extend beyond the second connecting surface 14 along the direction from the first box body 11 to the second box body 12” can be understood as that the portion of the first connecting member 130 on the same side as the second connecting surface 14 does not extend beyond the second connecting surface 14. For example, when the first connecting member 130 is a bolt, the nut of the bolt does not extend beyond the second connecting surface 14.

[0109] The above scheme, by setting the second connecting surface 14 to extend beyond the first connecting surface 13, can, on the one hand, reduce the interference of the structure of the battery 100 itself on the bracket 400, or the interference on the equipment performing the assembly action, thereby reducing the difficulty of assembling the battery 100 on the bracket 400, so that the battery 100 can be efficiently assembled on the bracket 400; on the other hand, it can enable the first connecting surface 13 to utilize the space below the bracket 400 in the horizontal direction, and can increase the internal volume of the box 10, so as to load more battery cells, which is beneficial to the improvement of the volume energy density of the battery 100.

[0110] In some embodiments, a sealing member may be further provided between the second box body 12 and the first connecting surface 13 , and the sealing member may be a sealing structure such as a sealing rubber ring or a sealing gasket.

[0111] According to some embodiments of this application, see Figure 4 and Figure 5 The first connection surface 13 is disposed along the circumferential direction of the opening of the first box body 11 , and there are a plurality of first connection members 130 , which are disposed at intervals along the circumferential direction of the opening.

[0112] In some embodiments, the box body 10 is square, and the first box body 11 includes a bottom wall, two first walls 110 opposite to each other along the second direction x, and two second walls 111 opposite to each other along the third direction y, and the first wall 110 and the second wall 111 are arranged adjacent to each other and are respectively arranged at the edge of the bottom wall. The two first walls 110 and the two second walls 111 together form an opening of the first box body 11. The first connecting surface 13 includes a first sub-connecting surface 13a and a second sub-connecting surface 13b connected to each other, the first sub-connecting surface 13a is formed on the first wall 110, and the second sub-connecting surface 13b is formed on the second wall 111. The four edges of the second box body 12 are all provided with flanges 121, and the four flanges 121 are respectively overlapped on the first wall 110 and the second wall 111 and correspond to the first sub-connecting surface 13a and the second sub-connecting surface 13b. There are multiple first connecting members 130, which are arranged corresponding to the first sub-connecting surface 13a of the first wall 110 and the second sub-connecting surface 13b of the second wall 111.

[0113] In other embodiments, the box body 10 is cylindrical, the peripheral wall of the first box body 11 forms a circular opening, the end surface of the peripheral wall of the first box body 11 forms a first connecting surface 13, and a plurality of first connecting surfaces 13 are spaced apart from each other.

[0114] In the above solution, by arranging a plurality of first connectors 130 along the circumference of the opening of the first box body 11 , the connection strength and sealing between the first box body 11 and the second box body 12 can be effectively improved, so that the battery 100 has a stable structure and high reliability.

[0115] According to some embodiments of this application, see Figure 5 and Figure 6 The second connection surface 14 is provided with a first mounting hole 140 , and the first mounting hole 140 is used for the mounting member 20 to pass through so as to be connected with the bracket 400 .

[0116] The first mounting hole 140 is a hole-shaped structure formed on the second connection surface 14. The first mounting hole 140 penetrates the second connection surface 14 and can accommodate the mounting member 20. The mounting member 20 passes through the opening of the first mounting hole 140 formed on the second connection surface 14 to be mounted on the bracket 400.

[0117] Exemplarily, the bracket 400 is formed with a second mounting hole 401 corresponding to the first mounting hole 140. The shape of the second mounting hole 401 is a non-centrally symmetrical figure, and its size in one direction is larger, for example, the second mounting hole 401 is formed in a rectangular shape. The mounting member 20 is rotatably arranged in the first mounting hole 140. The mounting member 20 includes a rod body 21 and a hanging portion 22. The rod body 21 is rotatably arranged in the first mounting hole 140. The hanging portion 22 is protruded from the rod body 21 along the radial direction of the rod body 21. When the battery 100 is moved upward, the hanging portion 22 passes through the second mounting hole 401. By rotating the rod body 21, the hanging portion 22 is rotated, so that the hanging portion 22 is misaligned with the second mounting hole 401 so as to be able to overlap the bracket 400.

[0118] In the above solution, by providing the first mounting hole 140 on the second connection surface 14 , the mounting member 20 can pass through the first mounting hole 140 to conveniently and efficiently mount the battery 100 on the bracket 400 , thereby increasing the assembly efficiency between the battery 100 and the bracket 400 .

[0119] According to some embodiments of this application, see Fig. 9 The second connection surface 14 includes a first area 141 and a second area 142. The first area 141 is protruded from the second area 142. The first area 141 is closer to the chamber than the second area 142. The first area 141 protrudes from the second area 142 and is located between two adjacent first connection members 130. At least a portion of the first mounting hole 140 is located in the first area 141.

[0120] In some embodiments, the second connection surface 14 includes a first area 141 and a second area 142, and the second area 142 is located outside the box body 10 relative to the first area 141. The edge of the second area 142 that is away from the first connection surface 13 is at least a part of the outer edge of the first box body 11. The number of first areas 141 can be multiple, and each first area 141 is protruded from the second area 142 and protrudes toward the inner side of the box body 10. Each first area 141 is located between two first connecting members 130. Exemplarily, the first connection surface 13 is provided with a threaded hole that cooperates with the first connecting member 130, and each first area 141 is located between two adjacent threaded holes.

[0121] “At least a portion of the first mounting hole 140 is located in the first area 141 ” can be understood as that a portion of the mounting component 20 can utilize the space between the two first connecting components 130 .

[0122] In some embodiments, when the mounting component 20 is mounted on the bracket 400 , at least one mounting component 20 overlaps the bracket 400 and cooperates with the first area 141 to clamp the bracket 400 .

[0123] In the above scheme, by providing a first area 141 that protrudes toward the inner side of the box body 10 and is located between two adjacent first connecting parts, and at least a portion of the first mounting hole 140 is provided in the first area 141, it is possible to make the mounting member 20 not interfere with the first connecting member 130, thereby improving the space utilization rate of the box body 10, and making the battery 100 have a higher volume energy density. In other words, the first connecting member 130 can be displaced toward the outside without interfering with the mounting member 20, thereby widening the space inside the box body 10 to assemble more battery cells, thereby facilitating the improvement of the volume energy density of the battery 100.

[0124] According to some embodiments of this application, please combine Figure 5 and Fig. 9 The second housing 12 is formed with an escape portion 120 for escaping the first area 141 .

[0125] In some embodiments, the second box body 12 is overlapped with the first connection surface 13, and the second box body 12 is recessed toward the inner side of the box body 10 to form an avoidance portion 120, and the avoidance portion 120 can avoid the first area 141 and the part of the mounting component 20 located in the first area 141. Exemplarily, the second box body 12 is provided with a flange 121, and the flange 121 is overlapped with the first connection surface 13, and the flange 121 is recessed toward the inner side of the box body 10 to form an avoidance groove, and the avoidance groove can expose the first area 141 so as not to interfere with the mounting component 20.

[0126] In the above solution, by providing the avoidance portion 120 on the second box body 12, the influence of the mounting member 20 on the second box body 12 can be reduced, so that the structure between the second box body 12 and the first box body 11 is stable and has good sealing, so that the reliability of the battery 100 is high.

[0127] According to some embodiments of this application, see Fig. 9 The first box body 11 also has a transition surface 15, and the first connection surface 13 and the second connection surface 14 are connected by the transition surface 15. The first connection surface 13, the second connection surface 14 and the transition surface 15 jointly define a receiving groove 16, and the first box body 11 is provided with a drainage portion 17 connecting the receiving groove 16 and the outside.

[0128] The plane where the first connection surface 13 is located and the plane where the second connection surface 14 is located are parallel to each other, but there is a height difference between the two, and the transition surface 15 is located between the first connection surface 13 and the second connection surface 14 and connects the first connection surface 13 and the second connection surface 14. In some embodiments, the plane where the transition surface 15 is located is perpendicular to the plane where the first connection surface 13 is located and the plane where the second connection surface 14 is located. In other embodiments, the plane where the transition surface 15 is located is inclined to the plane where the first connection surface 13 is located and the plane where the second connection surface 14 is located.

[0129] In some embodiments, the first connection surface 13, the transition surface 15, and the second connection surface 14 form a trapezoidal surface and together define a receiving groove 16. In some embodiments, the receiving groove 16 can receive the first connection member 130.

[0130] The drain portion 17 is a structure formed in the first housing 11, and its function is to connect the receiving tank 16 with the outside to discharge the accumulated liquid accumulated in the receiving tank 16. Exemplarily, the drain portion 17 is a groove, hole or pipe structure, which can guide the accumulated liquid in the receiving tank 16 to the outside of the housing 10.

[0131] In some embodiments, the drainage portion 17 may be a drainage groove 170, which may penetrate the first wall 110 along the thickness direction of the first wall 110, that is, penetrate the transition surface 15 and the outer side surface of the first wall 110. In some embodiments, the drainage portion 17 may be a drainage groove 170, which may penetrate the first wall 110 along the first direction z, that is, penetrate the first connecting surface 13 and the bottom of the first wall 110.

[0132] In the above solution, by providing the drainage portion 17 on the first box body 11, the accumulated liquid in the receiving groove 16 can be effectively discharged, reducing the risk of corrosion of the box body 10 due to the accumulated liquid, so that the battery 100 has higher reliability.

[0133] According to some embodiments of this application, see Fig. 9 and Fig.10 , Fig.10 for Figure 2 The drainage portion 17 includes a drainage groove 170, along the second direction x, one end of the drainage groove 170 passes through the transition surface 15, and the other end of the drainage groove 170 passes through the outer surface of the first box body 11, and the first direction z and the second direction x are perpendicular to each other.

[0134] In some embodiments, the drainage portion 17 is a drainage groove 170, which is a groove structure formed in the wall of the first box body 11, and when the first direction z is parallel to the gravity direction, the drainage groove 170 can extend in the horizontal direction to penetrate the transition portion and the outer surface of the first box body 11. Exemplarily, the drainage groove 170 is formed in the first wall 110, and the thickness direction of the first wall 110 is the second direction x. The drainage groove 170 is along the second direction x, one end of which penetrates the transition surface 15, and the other end penetrates the outer side surface of the first wall 110.

[0135] In the above scheme, by providing a drainage groove 170 that passes through the transition surface 15 and the outer surface of the first box body 11, the accumulated liquid in the receiving groove 16 can be effectively discharged, reducing the risk of corrosion of the box body 10 due to the accumulated liquid, so that the battery 100 has higher reliability.

[0136] In some embodiments, there are multiple drainage grooves 170, and the multiple drainage grooves 170 are arranged at intervals along the third direction y. The first direction z, the second direction x, and the third direction y are perpendicular to each other.

[0137] According to some embodiments of the present application, please refer to FIG. Figure 8 and Fig. 9 Along the first direction z, the drainage groove 170 extends from the first connecting surface 13 to the second connecting surface 14 .

[0138] In some embodiments, the drainage groove 170 may extend from the second connection surface 14 toward the first connection surface 13 and penetrate the transition surface 15 and the outer surface of the first box body 11 .

[0139] In the above scheme, by setting the drainage groove 170 to extend from the first connecting surface 13 to the second connecting surface 14, on the one hand, the accumulated liquid in the receiving groove 16 can be effectively discharged from the outside of the box body 10, and on the other hand, the molding direction of the drainage groove 170 can be from the second connecting surface 14 downward to the first connecting surface 13, which can reduce the molding difficulty of the drainage groove 170, improve the manufacturing efficiency of the box body 10, and further improve the manufacturing efficiency of the battery 100.

[0140] In other embodiments, the first drainage groove 170 is a through-hole structure, one end of which passes through the transition surface 15 , and the other end of which passes through the outer surface of the first box body 11 .

[0141] According to some embodiments of the present application, see Fig.10The width of the drainage groove 170 is w, which satisfies 4mm≤w≤15mm.

[0142] The width direction of the drainage groove 170 may be perpendicular to the extension direction of the drainage groove 170. In some embodiments, the drainage groove 170 extends along the second direction x, one end of which passes through the transition surface 15, and the other end passes through the outer side surface of the first wall 110. The width direction of the drainage groove 170 may be a third direction y, and the third direction y is perpendicular to the second direction x.

[0143] In some embodiments, the width w of the drainage groove 170 may be 4 mm, 5 mm, 6 mm, 7 mm, ... 13 mm, 14 mm, 15 mm or any value between two adjacent values.

[0144] In some embodiments, along the extension direction of the drainage groove 170, the value of the groove width w of the drainage groove 170 may not be fixed, that is, the width of a certain section of the drainage groove 170 may be inconsistent with the width of other sections. For example, the width of one section of the drainage groove 170 may be 4 mm, the width of another section may be 5 mm, and the width of another section may be 10 mm.

[0145] In the above scheme, by setting the width of the drainage groove 170 to be not less than 4 mm, the accumulated liquid in the receiving groove 16 can be quickly discharged, reducing the risk of corrosion of the box body 10; by setting the width of the drainage groove 170 to be not more than 15 mm, the influence of the drainage groove 170 on the structural strength of the first box body 11 can be reduced, so that the reliability of the battery 100 is high. To this end, by setting the width of the drainage groove 170 to be not less than 4 mm and not more than 15 mm, the discharge efficiency of the accumulated liquid and the structural strength of the first box body 11 can be taken into account, so that the battery 100 has high reliability.

[0146] In some embodiments, the notch w of the drainage groove 170 may satisfy 10 mm ≤ w ≤ 12 mm.

[0147] According to some embodiments of this application, see Figure 7 The first box body 11 includes two first walls 110 opposite to each other along the second direction x and two second walls 111 opposite to each other along the third direction y. The first wall 110 and the second wall 111 are arranged adjacent to each other, and the first direction z, the second direction x and the third direction y are perpendicular to each other. The first connecting surface 13 includes a first sub-connecting surface 13a and a second sub-connecting surface 13b connected to each other. The first sub-connecting surface 13a is formed on the first wall 110, and the second sub-connecting surface 13b is formed on the second wall 111.

[0148] The box body 10 may be square. The first box body 11 includes two first walls 110 opposite to each other along the second direction x and two second walls 111 opposite to each other along the third direction y. The first wall 110 and the second wall 111 are adjacently arranged and respectively arranged at the edge of the bottom wall. The second direction x may be the thickness direction of the first wall 110, and the second direction x may be the thickness direction of the second wall 111.

[0149] The first connection surface 13 is annular and includes a first sub-connection surface 13 a and a second sub-connection surface 13 b that are connected to each other. The first sub-connection surface 13 a is formed on the first wall 110 , and the second sub-connection surface 13 b is formed on the second wall 111 .

[0150] Exemplarily, the four edges of the second box body 12 are all provided with flanges 121 , and the four flanges 121 are respectively overlapped on the first wall 110 and the second wall 111 and correspond to the first sub-connection surface 13a and the second sub-connection surface 13b.

[0151] In the above scheme, on the one hand, the first box body 11 is surrounded by two first walls 110 and two second walls 111, which can enable the battery cells to effectively utilize the internal space of the box body 10, which is beneficial to the improvement of the volume energy density of the battery 100. On the other hand, the first connecting surface 13 is formed on the first wall 110 and the second wall 111, so that the first box body 11 can be effectively connected to the second box body 12, thereby improving the connection stability and sealing of the first box body 11 and the second box body 12, so that the reliability of the battery 100 is higher.

[0152] According to some embodiments of this application, see Figure 7 The second connecting surface 14 is formed on the first wall 110 .

[0153] “The second connection surface 14 is formed on the first wall 110” can be understood as that the connection portion between the box body 10 and the bracket 400 is formed on the first wall 110. Exemplarily, the first wall 110 is formed with a first mounting hole 140, and the first wall 110 is mounted on the bracket 400 through the mounting member 20 through the first mounting hole 140, so that the battery 100 is mounted on the bracket 400.

[0154] “The second connection surface 14 is formed on the first wall 110 ” may also be understood as that the second connection surface 14 is only formed on the first wall 110 , and the second connection surface 14 is not formed on the second wall 111 .

[0155] In the above solution, the second connection surface 14 is disposed on the first wall 110 so that the first wall 110 is connected to the bracket 400 , thereby improving the efficiency of assembling the battery 100 on the bracket 400 under the condition that the battery 100 is stably connected to the bracket 400 .

[0156] According to some embodiments of the present application, the length dimension of the first wall 110 is greater than the length dimension of the second wall 111 .

[0157] In some embodiments, the battery 100 is in the shape of an elongated strip, and its dimension in the second direction x is relatively large. The second connecting surface 14 is formed on a wall portion of the first box body 11 having a relatively large length dimension.

[0158] The length dimension of the first wall 110 can be regarded as the dimension of the first wall 110 in the second direction x. The bracket 400 can be arranged on two longitudinal beams of the frame, and the two longitudinal beams are arranged side by side along the second direction x. A plurality of mounting members 20 are arranged at intervals on the second connecting surface 14 of the first wall 110 along the second direction x, and mounted on the bracket 400.

[0159] In the above solution, by setting the second connecting surface 14 on the first wall 110 with a larger length dimension, a larger connecting area can be provided between the battery 100 and the bracket 400, thereby improving the connection stability between the battery 100 and the bracket 400, so that the battery 100 can be stably mounted on the bracket 400.

[0160] According to some embodiments of the present application, an electric device is also provided. The electric device includes a device body and the battery 100 provided above. The device body has a bracket 400. The battery 100 is connected to the device body through the bracket 400, and the battery 100 is used to provide electric energy to the device body.

[0161] The electrical device may be a vehicle, and a vehicle is used as an example for this description.

[0162] The vehicle 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. The type of the vehicle may be a sedan, an off-road vehicle, a heavy truck or a bus, etc. The vehicle is provided with a battery 100, and the battery 100 may be provided at the bottom of the vehicle. The battery 100 may be used to power the vehicle, for example, the battery 100 may be used as an operating power source for the vehicle, and used for the circuit system of the vehicle, for example, for the working power demand during the starting, navigation and operation of the vehicle.

[0163] The vehicle may also include a controller and a motor, and the controller is used to control the battery 100 to power the motor, for example, for starting, navigating, and driving the vehicle. In some embodiments of the present application, the battery 100 can not only be used as an operating power source for the vehicle, but also as a driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0164] The device body may include a vehicle frame, the vehicle frame may include a longitudinal beam, and the longitudinal beam is equipped with a bracket 400. The bracket 400 is used to assemble the battery 100. In some embodiments, the battery 100 and the bracket 400 may be fixedly connected or detachably connected. When the battery 100 and the bracket 400 are detachably connected, the energy replenishment method of the vehicle may include battery replacement, that is, replacing the battery 100.

[0165] In some embodiments, the battery 100 may be mounted on the bracket 400 from below the bracket 400 .

[0166] In the above scheme, by vertically staggering the connection interface between the first box body 11 and the second box body 12 of the battery 100 and the connection interface between the battery 100 and the bracket 400, on the one hand, it can reduce the interference of the structure of the battery 100 itself with the bracket 400, or the interference with the equipment performing the assembly action, which makes the assembly difficulty of the battery 100 and the bracket 400 higher and affects the risk of assembly efficiency of the battery 100 and the bracket 400; on the other hand, it can improve the lateral space utilization of the box body 10, so that more battery cells can be loaded in the box body 10, so that the battery 100 has a higher volume energy density.

[0167] According to some embodiments of this application, please combine Figure 5 and Fig.11 , Fig.11 This is a schematic diagram of the partial structure of the bracket and the battery in some embodiments of the present application. The second connecting surface 14 is provided with a first mounting hole 140, and the bracket 400 is provided with a second mounting hole 401. The first mounting hole 140 and the second mounting hole 401 are correspondingly arranged. The battery 100 passes through the first mounting hole 140 and the second mounting hole 401 through the mounting part 20 to be mounted on the bracket 400.

[0168] The first mounting hole 140 is a hole-shaped structure formed on the second connection surface 14. The first mounting hole 140 penetrates the second connection surface 14 and can accommodate the mounting member 20. The mounting member 20 passes through the opening of the first mounting hole 140 formed on the second connection surface 14 to be mounted on the bracket 400.

[0169] The bracket 400 is formed with a second mounting hole 401 corresponding to the first mounting hole 140. For example, the shape of the second mounting hole 401 is a non-centrally symmetrical figure, and its size in one direction is larger, for example, the second mounting hole 401 is a rectangle. The mounting member 20 is rotatably arranged in the first mounting hole 140. The mounting member 20 includes a rod body 21 and a mounting portion 22. The rod body 21 is rotatably arranged in the first mounting hole 140. The mounting portion 22 is protruded from the rod body 21 along the radial direction of the rod body 21. When the battery 100 is moved upward, the mounting portion 22 passes through the second mounting hole 401. By rotating the rod body 21, the mounting portion 22 rotates, so that the mounting portion 22 is misaligned with the second mounting hole 401 so as to be able to overlap the bracket 400. For another example, the second mounting hole 401 can be a threaded hole, and the mounting member 20 can be a bolt. The bolt of the bolt passes through the first mounting hole 140 to be screwed into the second mounting hole 401.

[0170] In the above scheme, by setting the first mounting hole 140 and the second mounting hole 401, the battery 100 can be connected to the bracket 400 in a mounting manner. On the one hand, it can improve the efficiency of assembling the battery 100 on the bracket 400, and on the other hand, it enables the electrical device to be recharged by replacing the battery, so that the electrical device has a faster recharge efficiency.

[0171] According to some embodiments of the present application, the mounting component 20 is rotatably disposed in the first mounting hole 140 , and the mounting component 20 is configured to be locked or unlocked to the bracket 400 by rotation.

[0172] In some embodiments, the mounting member 20 can be rotated by a robot or other device to change the posture of the mounting member 20, so that the mounting member 20 can be locked or unlocked to the bracket 400, thereby achieving assembly or detachment of the battery 100 and the bracket 400.

[0173] In some embodiments, the second mounting hole 401 is a non-centrally symmetrical shape, and its size in one direction is larger, and the mounting member 20 can be a member that can be rotated to overlap or misalign with the second mounting hole 401. When the mounting member 20 overlaps with the second mounting hole 401, it can be unlocked from the bracket 400. When the mounting member 20 is misaligned with the second mounting hole 401, it can be locked to the bracket 400.

[0174] In some embodiments, the mounting member 20 may be a threaded structure that can be threadedly connected to the second mounting hole 401 of the bracket 400 .

[0175] In the above solution, by rotating the mounting member 20, the battery 100 can be locked or unlocked on the bracket 400, so that the battery 100 can be quickly replaced to increase the energy charging efficiency of the electrical device.

[0176] According to some embodiments of this application, see Figure 5 and Fig. 9 The second connecting surface 14 includes a first area 141 and a second area 142. The first area 141 is protruded from the second area 142. The first area 141 is closer to the chamber than the second area 142. The mounting member 20 includes a rod body 21 and at least two mounting portions 22. The mounting portions 22 are protruded from the rod body 21 along the radial direction of the rod body 21. The second mounting hole 401 is for the mounting portions 22 to pass through. When the mounting member 20 is locked to the bracket 400, at least one mounting member 20 and the first area 141 cooperate to clamp the bracket 400.

[0177] In some embodiments, the second connection surface 14 includes a first area 141 and a second area 142, and the second area 142 is located outside the box 10 relative to the first area 141. The edge of the second area 142 that is away from the first connection surface 13 is at least part of the outer edge of the first box 11. The number of first areas 141 can be multiple, and each first area 141 is protruded from the second area 142 and protrudes toward the inner side of the box 10. The first connection surface 13 is provided with a first connection member 130, and the first connection member 130 connects the first box 11 and the second box 12. Each first area 141 is located between two adjacent first connection members 130.

[0178] The rod body 21 is rotatably disposed in the first mounting hole 140, and the hanging portion 22 is protruded from the rod body 21 along the radial direction of the rod body 21. When the battery 100 is moved upward, the hanging portion 22 overlaps with the second mounting hole 401 and can pass through the second mounting hole 401. By rotating the rod body 21, the hanging portion 22 is rotated, so that at least one hanging portion 22 is misaligned with the second mounting hole 401 so as to be overlapped with the bracket 400, so that the at least one mounting portion and the first area 141 can cooperate to clamp the bracket 400.

[0179] In the above scheme, by setting a first area 141 that protrudes toward the inner side of the box body 10 and is located between two adjacent first connecting parts, and the first area 141 can cooperate with the mounting component 20 to clamp the bracket 400, the mounting component 20 can not interfere with the connecting component between the first box body 11 and the second box body 12, thereby improving the space utilization of the box body 10 and making the overall structure of the battery 100 compact so as to have a higher volume energy density.

[0180] According to some embodiments of the present application, a battery 100 is provided. Figure 2-Figure 10 .

[0181] The battery 100 can be applied to a vehicle, and the battery 100 can be disposed under the vehicle frame through the bracket 400. The battery 100 includes a box body 10, and the box body 10 includes a first box body 11 and a second box body 12. The first box body 11 and the second box body 12 are connected to each other along a first direction z, and together define a chamber for accommodating a battery cell.

[0182] The box body 10 is square, the first box body 11 is the lower box body 10, and the second box body 12 is the upper cover. The first box body 11 includes a bottom wall, two first walls 110 opposite to each other along the second direction x, and two second walls 111 opposite to each other along the third direction y, and the first wall 110 and the second wall 111 are adjacently arranged and respectively arranged at the edge of the bottom wall.

[0183] A first connection surface 13 and a second connection surface 14 are formed on the side of the first box body 11 facing the second box body 12. The first connection surface 13 is annular, and includes a first sub-connection surface 13a and a second sub-connection surface 13b connected to each other. The first sub-connection surface 13a is formed on the first wall 110, and the second sub-connection surface 13b is formed on the second wall 111. The four edges of the second box body 12 are all provided with flanges 121, and the four flanges 121 are overlapped on the first wall 110 and the second wall 111 respectively and correspond to the first sub-connection surface 13a and the second sub-connection surface 13b. The four flanges 121 are connected to the first connection surface 13 through the first connecting member 130. The second connection surface 14 is formed on the first wall 110 and is located outside the first connection surface 13. In the first direction z, the second connection surface 14 exceeds the first connection surface 13. The second connection surface 14 is formed with a first mounting hole 140 , and the mounting component 20 can pass through the first mounting hole 140 to mount the battery 100 on a vehicle.

[0184] The first connection surface 13 is connected to the second connection surface 14 through the transition surface 15. The first connection surface 13, the second connection surface 14 and the transition surface 15 jointly define a receiving groove 16. The first connection member 130 is received in the receiving groove 16, and the first connection member 130 does not exceed the second connection surface 14. The first wall 110 is formed with a drainage groove 170, which penetrates the transition surface 15 and the outer side surface of the first wall 110 to connect the outside with the receiving groove 16. As the vehicle starts, the accumulated liquid accumulated in the receiving groove 16 can be discharged from the drainage groove 170 under the vibration of the vehicle.

[0185] In the above scheme, by setting the first connecting surface 13 and the second connecting surface 14 to have non-overlapping positions in the first direction z, the connecting interface between the first box body 11 and the second box body 12 of the battery 100 and the connecting interface between the battery 100 and the bracket 400 can be vertically offset. On the one hand, it can effectively reduce the risk of interference of the battery 100 structure itself with the bracket 400 due to the small distance between the two connecting interfaces, or interference of the battery 100 structure itself with the equipment performing the assembly action, which increases the difficulty of assembling the battery 100 and the bracket 400 and affects the assembly efficiency of the battery 100 and the bracket 400; on the other hand, compared with the scheme of increasing the lateral dimension of the second connecting surface 14, by vertically offsetting the two connecting interfaces, the additional occupation of the lateral space by the second connecting surface 14 can be effectively reduced, that is, the utilization rate of the lateral space of the box body 10 is improved, and more battery cells can be loaded in the box body 10, so that the battery 100 has a higher volume energy density. At the same time, by providing the drainage groove 170 on the first wall 110, the accumulated liquid in the receiving groove 16 can be effectively discharged, reducing the risk of corrosion of the box body 10 due to the accumulated liquid, so that the battery 100 has higher reliability.

[0186] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery configured to be connected to a bracket, characterized in that: include: A box body, the box body comprising a first box body and a second box body, the first box body and the second box body are connected to each other along a first direction, and the first box body and the second box body jointly define a chamber for accommodating a battery cell; The first box body has a first connection surface and a second connection surface facing the first direction, the first connection surface is connected to the second box body, and the second connection surface is used to connect to the bracket; The positions of the first connecting surface and the second connecting surface in the first direction do not overlap.

2. The battery according to claim 1, characterized in that The second connecting surface is farther away from the cavity than the first connecting surface.

3. The battery according to claim 2, characterized in that Along the direction from the first box body to the second box body, the second connecting surface exceeds the first connecting surface.

4. The battery according to claim 3, characterized in that The first connecting surface is provided with a first connecting member, and the first connecting member is connected to the second box body; Along the direction from the first box body to the second box body, the first connecting member does not extend beyond the second connecting surface.

5. The battery according to claim 4, characterized in that The first connecting surface is arranged along the circumference of the opening of the first box body, and there are multiple first connecting members, which are arranged at intervals along the circumference of the opening.

6. The battery according to claim 5, characterized in that The second connection surface is provided with a first mounting hole, and the first mounting hole is used for a mounting member to pass through so as to be connected with the bracket.

7. The battery according to claim 6, characterized in that The second connecting surface includes a first area and a second area, the first area is protruding from the second area, the first area is closer to the chamber than the second area, and the first area is protruding from the second area and is located between two adjacent first connecting members; At least a portion of the first mounting hole is located in the first area.

8. The battery according to claim 7, characterized in that The second box body is formed with an escape portion for escaping the first area.

9. The battery according to claim 3, characterized in that The first box body further has a transition surface, and the first connecting surface and the second connecting surface are connected by the transition surface; The first connecting surface, the second connecting surface and the transition surface jointly define a receiving groove, and the first box body is provided with a drainage portion connecting the receiving groove and the outside.

10. The battery according to claim 9, characterized in that The drainage portion includes a drainage groove. Along the second direction, one end of the drainage groove penetrates the transition surface, and the other end of the drainage groove penetrates the outer surface of the first box body. The first direction and the second direction are perpendicular to each other.

11. The battery according to claim 10, characterized in that Along the first direction, the drainage groove extends from the first connecting surface to the second connecting surface.

12. The battery according to claim 10, characterized in that The width of the drainage groove is w, which satisfies 4mm≤w≤15mm.

13. The battery according to any one of claims 1 to 12, characterized in that: The first box body includes two first walls opposite to each other along a second direction and two second walls opposite to each other along a third direction, the first wall and the second wall are arranged adjacent to each other, and the first direction, the second direction and the third direction are perpendicular to each other in pairs; The first connection surface includes a first sub-connection surface and a second sub-connection surface connected to each other, the first sub-connection surface is formed on the first wall, and the second sub-connection surface is formed on the second wall.

14. The battery according to claim 13, characterized in that The second connecting surface is formed on the first wall.

15. The battery according to claim 14, characterized in that The length dimension of the first wall is greater than the length dimension of the second wall.

16. An electrical device, characterized in that: include: The device body has a bracket; The battery according to any one of claims 1 to 15, wherein the battery is connected to the device body via the bracket, and the battery is used to provide electrical energy to the device body.

17. The electrical device according to claim 16, characterized in that: The second connecting surface is provided with a first mounting hole, the bracket is provided with a second mounting hole, the first mounting hole and the second mounting hole are provided correspondingly, and the battery is mounted on the bracket by passing through the first mounting hole and the second mounting hole through a mounting member.

18. The electrical device according to claim 17, characterized in that: The mounting member is rotatably disposed in the first mounting hole, and the mounting member is configured to be locked or unlocked to the bracket by rotating.

19. The electrical device according to claim 18, characterized in that: The second connecting surface includes a first area and a second area, the first area is protruding from the second area, and the first area is closer to the chamber than the second area; The mounting member includes a rod body and at least two mounting portions, wherein the mounting portions are protruded from the rod body along the radial direction of the rod body, and the second mounting hole is for the mounting portions to pass through; wherein, when the mounting member is locked to the bracket, at least one of the mounting members and the first area cooperate to clamp the bracket.

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