Battery box, battery and electric device

Abstract

The utility model discloses a battery box, a battery and an electric device. The battery box comprises a box body, a cover body, a frame cross beam and a hanging assembly, and the cover body is buckled on the box body; the frame cross beam is fixed in the box body, the frame cross beam comprises a frame body and a sleeve embedded in the frame body, and the hardness of the sleeve is greater than that of the frame body; the hanging assembly comprises a first hanging piece, the first hanging piece comprises a hanging body and a first supporting part arranged on the hanging body, one end of the hanging body is connected with the sleeve, the other end of the hanging body is connected with the cover body, and at least part of the first supporting part abuts against the end, facing the cover body, of the sleeve. According to the battery box, the strength of the pressure-bearing surface of the frame cross beam is enhanced, and the possibility of crushing and deformation of the frame cross beam is reduced, so that the structural strength of the battery box is improved.

Description

Technical Field

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

[0002] Battery cells are widely used in electronic devices, such as mobile phones, laptop computers, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and electric tools, etc. Battery cells can include nickel-cadmium battery cells, nickel-hydrogen battery cells, lithium-ion battery cells, and secondary alkaline zinc-manganese battery cells, etc.

[0003] The battery box is the load-bearing component of the battery, and its structural strength directly affects the reliability of the battery. Utility Model Content

[0004] The embodiments of the present application provide a battery box, a battery, and an electrical device, which can improve the structural strength of the battery box.

[0005] In the first aspect, an embodiment of the present application provides a battery box, which includes a box body, a cover body, a frame beam and a mounting assembly, wherein the cover body is buckled on the box body; the frame beam is fixed in the box body, the frame beam includes a frame body and a sleeve embedded in the frame body, the hardness of the sleeve is greater than the hardness of the frame body; the mounting assembly includes a first mounting component, the first mounting component includes a mounting body and a first supporting portion arranged on the mounting body, one end of the mounting body is connected to the sleeve, and the other end of the mounting body is connected to the cover body, and at least a portion of the first supporting portion abuts against one end of the sleeve facing the cover body.

[0006] In the above scheme, the battery box can be fixed under the chassis of the vehicle by passing bolts through the first mounting member and the sleeve. Since at least part of the first support portion of the first mounting member abuts against the end of the sleeve facing the cover body, that is, the sleeve bears part of the weight of the assembly interface above the frame beam. The hardness of the sleeve is greater than the hardness of the frame body, which enhances the strength of the pressure-bearing surface of the frame beam and reduces the possibility of crushing and deformation of the frame beam, thereby improving the structural strength of the battery box. At the same time, it simplifies the structure of the mounting assembly and reduces the processing cost.

[0007] In some embodiments, the mounting body includes a first mounting sleeve and a second support portion, the first support portion is arranged on the outer periphery of the first mounting sleeve, and the first mounting sleeve is connected to the sleeve; the second support portion is arranged on the outer periphery of the first mounting sleeve, and the second support portion abuts against one end of the cover body facing the frame beam.

[0008] In the above solution, the battery box can be fixed below the chassis of the vehicle by passing the bolts through the first mounting sleeve and the sleeve. The second support part is located below the cover body and can support the cover body, further improving the structural strength of the battery box.

[0009] In some embodiments, the mounting body further includes a fastener, the fastener is connected to the first mounting sleeve, and a portion of the cover body is clamped between the second support portion and the fastener.

[0010] In the above solution, the cover body and the first mounting sleeve are fixed by fasteners, which can enhance the reliability of the connection between the first mounting member and the cover body.

[0011] In some embodiments, the end of the first mounting sleeve toward the fastener passes through the cover body and is threadedly connected to the fastener.

[0012] In the above scheme, the cover body can be locked by the threaded connection between the fastener and the first mounting sleeve. The threaded connection is convenient for disassembly and assembly, which can improve the assembly and maintenance efficiency.

[0013] In some embodiments, the first mounting sleeve is inserted into the sleeve toward the end of the frame beam and is threadedly connected with the sleeve.

[0014] The threaded connection between the first mounting sleeve and the casing facilitates assembly and disassembly, which can improve assembly and maintenance efficiency. The connection structure is simple, which can reduce costs.

[0015] In some embodiments, the mounting assembly further includes a first seal, which is disposed between the second support portion and the cover body and can enhance the sealing performance of the battery box.

[0016] In some embodiments, the mounting assembly also includes a second mounting component, the second mounting component includes a second mounting sleeve and a third support portion, the second mounting sleeve is connected to the sleeve; the third support portion is arranged on the outer periphery of the second mounting sleeve, and part of the box body is clamped between the frame beam and the third support portion.

[0017] In the above scheme, the battery box can be fixed to the bottom of the chassis of the vehicle by bolts passing through the first mounting sleeve, the sleeve and the second mounting sleeve respectively. The second mounting sleeve is connected to the sleeve, and part of the box body is clamped between the frame crossbeam and the third support part, so that the connection reliability between the frame crossbeam and the box body can be improved. Moreover, by adding the second mounting member, the battery box can be more firmly mounted on the bottom of the vehicle chassis.

[0018] In some embodiments, part of the second mounting sleeve is inserted into the casing and is threadedly connected to the casing, which is convenient for assembly and disassembly, and can improve assembly and maintenance efficiency. The connection structure is simple, which can reduce costs.

[0019] In some embodiments, the box body includes a stacked heat exchange plate and a bottom guard plate, the third support portion includes a first step and a second step, the heat exchange plate is clamped between the frame beam and the first step; the second step is arranged on the side of the first step away from the frame beam, and the bottom guard plate is clamped between the heat exchange plate and the second step.

[0020] In the above scheme, by setting up double steps, the heat exchange plate and the bottom guard plate can be prevented from shifting relative to each other to a certain extent when they are installed, and the heat exchange plate and the bottom guard plate can be more firmly connected to the frame crossbeam, which can improve the connection reliability and sealing of the battery box.

[0021] In some embodiments, the mounting assembly further includes a second seal, which is sandwiched between the frame crossbeam and the heat exchange plate to enhance the sealing performance of the battery box.

[0022] In some embodiments, the frame beam also includes a reinforcing cross plate, which is arranged in the frame body, and the sleeve passes through the reinforcing cross plate. The reinforcing cross plate improves the structural strength of the frame beam, thereby further reducing the possibility of crushing and deformation problems of the frame beam.

[0023] In a second aspect, an embodiment of the present application provides a battery, comprising a battery cell and a battery box according to any of the above embodiments, wherein the battery cell is disposed in the battery box.

[0024] In a third aspect, an embodiment of the present application provides an electrical device, comprising the above-mentioned battery, and the battery is used to provide electrical energy.

[0025] 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 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

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A schematic diagram of a vehicle according to some embodiments of the present application;

[0028] Figure 2 A schematic diagram of the structure of a battery in some embodiments of the present application;

[0029] Figure 3 for Figure 2 A schematic diagram of the structure of the battery module shown;

[0030] Figure 4 This is a schematic diagram of the structure of the box in some embodiments of the present application;

[0031] Figure 5This is a partial structural schematic diagram of a frame beam of some embodiments of the present application;

[0032] Figure 6 This is a schematic diagram of the assembly structure of the frame beam and the mounting assembly in some embodiments of the present application;

[0033] Figure 7 It is a schematic cross-sectional diagram of the assembly of the frame beam and the mounting assembly of some embodiments of the present application;

[0034] Figure 8 A partial structural schematic diagram of a first mounting component in some embodiments of the present application;

[0035] Fig. 9 This is an exploded schematic diagram of a first mounting component in some embodiments of the present application;

[0036] Fig.10 for Figure 7 A magnified schematic diagram of point A;

[0037] Fig.11 This is a schematic diagram of the structure of the second mounting component in some embodiments of the present application;

[0038] Fig.12 A schematic diagram of the assembly structure of the frame beam and the mounting assembly at another angle in some embodiments of the present application;

[0039] Fig.13 It is a schematic cross-sectional diagram of the assembly of the frame beam and the mounting assembly of some embodiments of the present application;

[0040] Fig.14 for Fig.13 An enlarged schematic diagram of point B;

[0041] Fig.15 for Fig.13 An enlarged schematic diagram of point C;

[0042] Fig.16 This is a partial structural schematic diagram of the first mounting component of some embodiments of the present application.

[0043] The figures are as follows:

[0044] 1000, vehicle; 100, battery; 200, controller; 300, motor; 10, cover; 20, battery cell; 30, box; 31, heat exchange plate; 32, bottom guard plate; 40, frame crossbeam; 41, frame body; 42, sleeve; 421, second through hole; 422, second groove; 43, reinforcing cross plate; 50, mounting assembly; 51, first mounting member; 511, mounting body; 512, first support portion; 513, first through hole; 514, first mounting sleeve; 515, second support portion; 516, fastener; 517, first groove; 52, first sealing member; 53, second mounting member; 531, second mounting sleeve; 532, third support portion; 533, third through hole; 534, first step; 535, second step; 54, second sealing member. DETAILED DESCRIPTION

[0045] 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.

[0046] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0047] Reference to "embodiments" in this application 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 in this application may be combined with other embodiments.

[0048] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0049] In the present application, battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc., and the embodiments of the present application do not limit this. Battery cells may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present application do not limit this.

[0050] 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 a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0051] The battery cell includes an electrode assembly and an electrolyte. 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 current collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode current collector. The current collector not coated with the positive electrode active material layer protrudes from the current collector coated with the positive electrode active material layer. The current collector not coated with the positive electrode active material layer is stacked as a positive electrode tab. Taking lithium-ion batteries as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide. 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 current collector not coated with the negative electrode active material layer protrudes from the current collector coated with the negative electrode active material layer. The current collector not coated with the negative electrode active material layer is stacked as a negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon. The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a winding structure or a stacked structure, but the embodiments of the present application are not limited thereto.

[0052] The battery cells disclosed in the embodiments of the present application can be used in, but not limited to, electrical devices such as vehicles, ships or aircraft. A power supply system comprising the battery cells and batteries disclosed in the present application can be used to form the electrical device, which is beneficial to improving the stability of battery performance and battery life.

[0053] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0054] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0055] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000, for example, the battery 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0056] 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.

[0057] Please refer to Figure 2 , Figure 2An exploded view of a battery 100 provided in some embodiments of the present application. The battery 100 includes a battery box and a battery cell 20. In some embodiments, the battery box may include a cover 10 and a box 30, the cover 10 and the box 30 cover each other, and the cover 10 and the box 30 jointly define a storage space for accommodating the battery cell 20. The box 30 may be a hollow structure with one end open, and the cover 10 may be a plate-like structure, and the cover 10 covers the open side of the box 30, so that the cover 10 and the box 30 jointly define a storage space; the cover 10 and the box 30 may also be hollow structures with one side open, and the open side of the cover 10 covers the open side of the box 30. Of course, the box formed by the cover 10 and the box 30 may be in a variety of shapes, such as a cylinder, a cuboid, etc.

[0058] Figure 3 for Figure 2 The schematic diagram of the structure of the battery module shown. In the battery 100, there can be multiple battery cells 20, and the multiple battery cells 20 can be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box; of course, the battery 100 can also be a battery module formed by connecting multiple battery cells 20 in series, in parallel, or in mixed connection, and the multiple battery modules are then connected in series, in parallel, or in mixed connection to form a whole, and accommodated in the box. The battery 100 may also include other structures. For example, the battery 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 20.

[0059] Each battery cell 20 can be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 can be cylindrical, flat, rectangular, or in other shapes.

[0060] At present, the battery box needs to be firmly connected to the body of the vehicle to meet the strength requirements during the use of the vehicle. At the same time, in order to ensure the structural strength of the battery pack, a frame beam is generally added to the battery box. A mounting assembly is also provided in the middle of the battery box. The mounting assembly generally includes an adapter sleeve, a middle sleeve and a bottom sleeve that are connected to each other. The mounting assembly passes through the frame beam, and the bolts pass through the adapter sleeve, the middle sleeve and the bottom sleeve in turn to lock the battery box to the lower part of the chassis of the vehicle. The frame beam of the battery box is a pressure-bearing part, which is prone to crushing and deformation.

[0061] In view of this, the present application provides a technical solution, in which the battery box includes a box body, a cover body, a frame beam and a mounting assembly, the cover body is buckled on the box body; the frame beam is fixed in the box body, the frame beam includes a frame body and a sleeve embedded in the frame body, the hardness of the sleeve is greater than the hardness of the frame body; the mounting assembly includes a first mounting component, the first mounting component includes a mounting body and a first supporting portion arranged on the mounting body, one end of the mounting body is connected to the sleeve, the other end of the mounting body is connected to the cover body, and at least a portion of the first supporting portion abuts against one end of the sleeve facing the cover body.

[0062] The battery box can be fixed under the chassis of the vehicle by passing bolts through the first mounting member and the sleeve. Since at least part of the first support portion of the first mounting member abuts against one end of the sleeve facing the cover body, that is, the sleeve bears part of the weight of the assembly interface above the frame beam. The hardness of the sleeve is greater than the hardness of the frame body, which enhances the strength of the pressure-bearing surface of the frame beam and reduces the possibility of crushing and deformation of the frame beam, thereby improving the structural strength of the battery box. At the same time, it simplifies the structure of the mounting assembly and reduces the processing cost.

[0063] Figure 4 This is a schematic diagram of the structure of the box in some embodiments of the present application; Figure 5 This is a partial structural schematic diagram of a frame beam of some embodiments of the present application; Figure 6 This is a schematic diagram of the assembly structure of the frame beam and the mounting assembly in some embodiments of the present application; Figure 7 This is a schematic cross-sectional diagram of the assembly of the frame beam and the mounting assembly of some embodiments of the present application.

[0064] Please refer to Figure 4-Figure 7 In the first aspect, the embodiment of the present application provides a battery box, which includes a box body 30, a cover body 10, a frame beam 40 and a mounting assembly 50, wherein the cover body 10 is buckled on the box body 30; the frame beam 40 is fixed in the box body 30, the frame beam 40 includes a frame body 41 and a sleeve 42 embedded in the frame body 41, and the hardness of the sleeve 42 is greater than the hardness of the frame body 41; the mounting assembly 50 includes a first mounting component 51, the first mounting component 51 includes a mounting body 511 and a first supporting portion 512 arranged on the mounting body 511, one end of the mounting body 511 is connected to the sleeve 42, and the other end of the mounting body 511 is connected to the cover body 10, and at least a portion of the first supporting portion 512 abuts against one end of the sleeve 42 facing the cover body 10.

[0065] The accommodating cavity formed between the box body 30 and the cover body 10 is used to install the battery module. The frame crossbeam 40 can be fixed to the box body 30 by welding, bolts, etc., and the sleeve 42 can be fixed to the frame crossbeam 40 by welding, snaps, etc. The sleeve 42 is made of different materials from the frame crossbeam 40, and the hardness of the sleeve 42 is greater than the hardness of the frame body 41. For example, the frame body 41 is made of a metal material with a lower hardness, such as aluminum, to reduce the weight of the battery box, while the sleeve 42 is made of a metal material with a higher hardness, such as steel.

[0066] The mounting body 511 can be connected to the sleeve 42 by means of threads, clamping, etc. The first mounting part 51 can be formed with a first through hole 513, and the sleeve 42 has a second through hole 421, and the second through hole 421 passes through the frame beam 40. After the mounting body 511 is fixed to the sleeve 42, the first through hole 513 and the second through hole 421 are connected to each other, and the first support part 512 is pressed on the sleeve 42. The first support part 512 can also be pressed on the sleeve 42 and the frame beam 40 respectively, that is, the inner edge of the first support part 512 is pressed on the sleeve 42, and the outer edge is pressed on the frame beam 40.

[0067] The first support portion 512 may be disposed around the outer circumference of the mounting body 511 , or may be disposed only at a portion of the outer circumference of the mounting body 511 , or may be disposed multiple first support portions 512 arranged at intervals on the outer circumference of the mounting body 511 .

[0068] In the above scheme, the battery box can be fixed to the bottom of the chassis of the vehicle by passing bolts through the first mounting member 51 and the sleeve 42. Since at least part of the first support portion 512 of the first mounting member 51 abuts against the end of the sleeve 42 facing the cover body 10, that is, the sleeve 42 bears part of the weight of the assembly interface above the frame beam 40. The hardness of the sleeve 42 is greater than the hardness of the frame body 41, which enhances the strength of the pressure-bearing surface of the frame beam 40 and reduces the possibility of crushing and deformation of the frame beam 40, thereby improving the structural strength of the battery box. At the same time, the conventional middle sleeve is eliminated, the structure of the mounting assembly 50 is simplified, and the processing cost is reduced. Since the frame beam 40 is not prone to crushing and deformation, the torque of the assembly interface can be increased, making the mounting assembly 50 less likely to loosen.

[0069] Figure 7 It is a schematic cross-sectional diagram of the assembly of the frame beam and the mounting assembly of some embodiments of the present application; Figure 8 This is a partial structural schematic diagram of the first mounting component of some embodiments of the present application.

[0070] Please refer to Figure 7 and Figure 8In some embodiments, the mounting body 511 includes a first mounting sleeve 514 and a second support portion 515, the first support portion 512 is arranged on the outer periphery of the first mounting sleeve 514, and the first mounting sleeve 514 is connected to the sleeve 42; the second support portion 515 is arranged on the outer periphery of the first mounting sleeve 514, and the second support portion 515 abuts against one end of the cover body 10 facing the frame beam 40.

[0071] The first mounting sleeve 514 may be formed with a first through hole 513, and the sleeve 42 may have a second through hole 421. The lower end of the first mounting sleeve 514 may be fixed to the sleeve 42 by means of threads, clamping, or the like.

[0072] The first support portion 512 may be disposed at the lower end portion of the first mounting sleeve 514, and the second support portion 515 may be disposed at the upper end portion of the first mounting sleeve 514. The first support portion 512 is supported above the sleeve, and the second support portion 515 is supported below the cover 10.

[0073] The first support portion 512 may be disposed around the outer circumference of the mounting body 511 , or may be disposed only at a portion of the outer circumference of the mounting body 511 , or may be disposed multiple first support portions 512 arranged at intervals on the outer circumference of the mounting body 511 .

[0074] The second support portion 515 may also be disposed around the outer circumference of the mounting body 511 , or only be disposed at a portion of the outer circumference of the mounting body 511 , or a plurality of second support portions 515 may be disposed at intervals on the outer circumference of the mounting body 511 .

[0075] In the above solution, the battery box can be fixed below the chassis of the vehicle by passing bolts through the first mounting sleeve 514 and the sleeve 42. The second support portion 515 is located below the cover 10 and can support the cover 10, further improving the structural strength of the battery box.

[0076] Figure 6 This is a schematic diagram of the assembly structure of the frame beam and the mounting assembly in some embodiments of the present application; Figure 7 It is a schematic cross-sectional diagram of the assembly of the frame beam and the mounting assembly of some embodiments of the present application; Figure 8 A partial structural schematic diagram of a first mounting component in some embodiments of the present application; Fig. 9 This is a schematic diagram of an exploded view of the first mounting component of some embodiments of the present application.

[0077] Please refer to Figure 6-Figure 9 In some embodiments, the mounting body 511 further includes a fastener 516 , which is connected to the first mounting sleeve 514 , and a portion of the cover body 10 is clamped between the second support portion 515 and the fastener 516 .

[0078] The fastener 516 may be a nut, and an external thread is provided on the outer periphery of the first mounting sleeve 514, and the cover body 10 is clamped by the fastener 516. Alternatively, the fastener 516 may be a buckle, and the cover body 10 is clamped by the fastener 516 on the first mounting sleeve 514.

[0079] In the above solution, the cover body 10 and the first mounting sleeve 514 are fixed by the fastener 516 , which can enhance the reliability of the connection between the first mounting member 51 and the cover body 10 .

[0080] In some embodiments, the end of the first mounting sleeve 514 facing the fastener 516 passes through the cover 10 and is threadedly connected to the fastener 516 .

[0081] For example, an external thread is set at the upper end of the first mounting sleeve 514 located at the second support part 515, and the fastener 516 is a nut. The fastener 516 is locked by threaded connection, and part of the cover body 10 is clamped between the fastener 516 and the second support part 515.

[0082] In the above solution, the cover body 10 can be locked by threaded connection between the fastener 516 and the first mounting sleeve 514. The threaded connection is convenient for disassembly and assembly, which can improve assembly and maintenance efficiency.

[0083] In some embodiments, the first mounting sleeve 514 is inserted into the sleeve 42 toward the end of the frame cross beam 40 and is threadedly connected to the sleeve 42 .

[0084] The inner wall of the sleeve 42 is provided with an internal thread, and the lower end portion of the first mounting sleeve 514 located at the first support portion 512 is provided with an external thread and inserted into the sleeve 42. The threaded connection between the first mounting sleeve 514 and the sleeve 42 facilitates assembly and disassembly, which can improve assembly and maintenance efficiency. In addition, the connection structure is simple, which can reduce costs.

[0085] Fig. 9 This is an exploded schematic diagram of a first mounting component in some embodiments of the present application; Fig.10 for Figure 7 An enlarged schematic diagram of point A.

[0086] Please refer to Fig. 9 and Fig.10 In some embodiments, the mounting assembly 50 further includes a first sealing member 52 , and the first sealing member 52 is disposed between the second supporting portion 515 and the cover body 10 .

[0087] A first groove 517 may be provided on the side of the second support portion 515 facing the cover body 10, and the first sealing member 52 may be filled in the first groove 517. The first groove 517 may be annular, and the first sealing member 52 may be an annular sealing ring. Alternatively, a plurality of first grooves 517 may be provided on the second support portion 515 and arranged at intervals along the circumference of the first mounting sleeve 514, and each first sealing member 52 may be filled in the plurality of first grooves 517 in a one-to-one correspondence. The provision of the first sealing member 52 may enhance the sealing performance of the battery box.

[0088] Fig.11 This is a schematic diagram of the structure of the second mounting component in some embodiments of the present application; Fig.12 A schematic diagram of the assembly structure of the frame beam and the mounting assembly at another angle in some embodiments of the present application; Fig.13 This is a schematic cross-sectional diagram of the assembly of the frame beam and the mounting assembly of some embodiments of the present application.

[0089] Please refer to Figure 11-13 In some embodiments, the mounting assembly 50 also includes a second mounting component 53, the second mounting component 53 includes a second mounting sleeve 531 and a third support portion 532, the second mounting sleeve 531 is connected to the sleeve 42; the third support portion 532 is arranged on the outer periphery of the second mounting sleeve 531, and part of the box body 30 is clamped between the frame beam 40 and the third support portion 532.

[0090] The first mounting sleeve 514 may be formed with a first through hole 513, the sleeve 42 has a second through hole 421, and the second mounting sleeve 531 is formed with a third through hole 533. The upper end of the second mounting sleeve 531 may be fixed to the sleeve 42 by means of threads, clamping, etc. After the first mounting sleeve 514 and the second mounting sleeve 531 are respectively connected to the sleeve 42, the first through hole 513, the second through hole 421 and the third through hole 533 are located on the same axis and are connected to each other. Bolts may be used to pass through the first mounting sleeve 514, the sleeve 42 and the second mounting sleeve 531 respectively to fix the battery box below the chassis of the vehicle. The third support portion 532 is supported below the box body 30.

[0091] The third support portion 532 may be arranged around the outer circumference of the second mounting sleeve 531 , or may be arranged only at a partial position of the outer circumference of the second mounting sleeve 531 , or may be arranged multiple third support portions 532 arranged at intervals on the outer circumference of the second mounting sleeve 531 .

[0092] In the above scheme, the battery box can be fixed to the bottom of the chassis of the vehicle by bolts passing through the first mounting sleeve 514, the sleeve 42 and the second mounting sleeve 531 respectively. The second mounting sleeve 531 is connected to the sleeve 42, and a part of the box body 30 is clamped between the frame crossbeam 40 and the third support portion 532, so that the connection reliability between the frame crossbeam 40 and the box body 30 can be improved. Moreover, by adding the second mounting member 53, the battery box can be more firmly mounted on the bottom of the vehicle chassis.

[0093] In some embodiments, a portion of the second mounting sleeve 531 is inserted into the sleeve 42 and threadedly connected to the sleeve 42. The inner wall of the sleeve 42 is provided with internal threads, and the upper end portion of the second mounting sleeve 531 located at the third support portion 532 is provided with external threads and inserted into the sleeve 42.

[0094] The threaded connection between the second mounting sleeve 531 and the sleeve 42 is convenient for assembly and disassembly, which can improve assembly and maintenance efficiency. The connection structure is simple, which can reduce costs.

[0095] Fig.12 A schematic diagram of the assembly structure of the frame beam and the mounting assembly at another angle in some embodiments of the present application; Fig.13 It is a schematic cross-sectional diagram of the assembly of the frame beam and the mounting assembly of some embodiments of the present application; Fig.14 for Fig.13 An enlarged schematic diagram of point B.

[0096] Please refer to Figure 12-14 In some embodiments, the box body 30 includes a stacked heat exchange plate 31 and a bottom guard plate 32, the third support portion 532 includes a first step 534 and a second step 535, the heat exchange plate 31 is clamped between the frame beam 40 and the first step 534; the second step 535 is arranged on the side of the first step 534 away from the frame beam 40, and the bottom guard plate 32 is clamped between the heat exchange plate 31 and the second step 535.

[0097] The heat exchange plate 31 is located above the bottom guard plate 32, and the heat exchange plate 31 is in direct contact with the bottom of the battery cell 20. A heat exchange flow channel for heat exchange medium to flow is formed in the heat exchange plate 31. By controlling the temperature of the heat exchange medium, the heat exchange medium in the heat exchange flow channel heats or cools the battery cell 20. The bottom guard plate 32 is used to protect and support the battery cell 20.

[0098] The first step 534 is higher than the second step 535 . The first step 534 is used to clamp the heat exchange plate 31 , and the second step 535 is used to clamp the bottom guard plate 32 .

[0099] In the above scheme, by setting up double steps, the heat exchange plate 31 and the bottom guard plate 32 can be prevented from shifting relative to each other to a certain extent when they are installed, and the heat exchange plate 31 and the bottom guard plate 32 are more firmly connected to the frame crossbeam 40, which can improve the connection reliability and sealing of the battery box.

[0100] Fig.15 for Fig.13 The enlarged schematic diagram of point C. Fig.15 As shown, in some embodiments, the mounting assembly 50 further includes a second seal 54 , which is sandwiched between the frame cross beam 40 and the heat exchange plate 31 .

[0101] A second groove 422 may be provided on the side of the sleeve 42 facing the heat exchange plate 31, and the second seal 54 may be filled in the second groove 422. The second groove 422 may be annular, and the second seal 54 may be an annular sealing ring. Alternatively, a plurality of second grooves 422 spaced along the circumference of the second mounting sleeve 531 may be provided on the third support portion 532, and each second seal 54 may be filled in the plurality of second grooves 422 in a one-to-one correspondence. The second seal 54 may enhance the sealing performance of the battery box.

[0102] Fig.16 This is a partial structural diagram of the first mounting member in some embodiments of the present application. Fig.16 As shown, in some embodiments, the frame beam 40 also includes a reinforcing cross plate 43, which is disposed in the frame body 41, and the sleeve 42 passes through the reinforcing cross plate 43. The reinforcing cross plate 43 improves the structural strength of the frame beam 40, thereby further reducing the possibility of crushing and deformation problems of the frame beam 40.

[0103] In a second aspect, an embodiment of the present application provides a battery, including a battery cell 20 and a battery box of any of the above-mentioned embodiments, wherein the battery cell 20 is disposed in the battery box.

[0104] In a third aspect, an embodiment of the present application provides an electrical device, comprising the above-mentioned battery, and the battery is used to provide electrical energy.

[0105] According to some embodiments of the present application, the present application provides a battery box, which includes a box body 30, a cover body 10, a frame beam 40 and a mounting assembly 50, wherein the cover body 10 is buckled on the box body 30; the frame beam 40 is fixed in the box body 30, the frame beam 40 includes a frame body 41 and a sleeve 42 embedded in the frame body 41, and the hardness of the sleeve 42 is greater than the hardness of the frame body 41; the mounting assembly 50 includes a first mounting component 51, the first mounting component 51 includes a mounting body 511 and a first supporting portion 512 arranged on the mounting body 511, one end of the mounting body 511 is connected to the sleeve 42, and the other end of the mounting body 511 is connected to the cover body 10, and at least a portion of the first supporting portion 512 abuts against one end of the sleeve 42 facing the cover body 10. The mounting assembly 50 also includes a second mounting component 53, which includes a second mounting sleeve 531 and a third support portion 532. The second mounting sleeve 531 is connected to the sleeve 42; the third support portion 532 is arranged on the outer periphery of the second mounting sleeve 531, and part of the box body 30 is clamped between the frame beam 40 and the third support portion 532.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery box, characterized in that: include: Box; A cover body, buckled on the box body; A frame crossbeam is fixed in the box, the frame crossbeam comprises a frame body and a sleeve embedded in the frame body, and the hardness of the sleeve is greater than the hardness of the frame body; The mounting assembly includes a first mounting component, which includes a mounting body and a first supporting portion arranged on the mounting body, one end of the mounting body is connected to the sleeve, and the other end of the mounting body is connected to the cover body, and at least a portion of the first supporting portion abuts against one end of the sleeve toward the cover body.

2. The battery box according to claim 1, characterized in that: The mounting body comprises: A first mounting sleeve, wherein the first support portion is disposed on the outer periphery of the first mounting sleeve, and the first mounting sleeve is connected to the sleeve; The second support portion is arranged on the outer periphery of the first mounting sleeve, and the second support portion abuts against one end of the cover body facing the frame beam.

3. The battery box according to claim 2, characterized in that: The mounting body also includes a fastener, which is connected to the first mounting sleeve, and a portion of the cover body is sandwiched between the second supporting portion and the fastener.

4. The battery box according to claim 3, characterized in that: The end of the first mounting sleeve toward the fastener passes through the cover body and is threadedly connected with the fastener.

5. The battery box according to claim 2, characterized in that: The first mounting sleeve is inserted into the sleeve toward the end of the frame cross beam and is threadedly connected with the sleeve.

6. The battery box according to claim 2, characterized in that: The mounting assembly further includes a first sealing member, and the first sealing member is disposed between the second supporting portion and the cover body.

7. The battery box according to any one of claims 1 to 6, characterized in that: The mounting assembly further includes a second mounting component, and the second mounting component includes: A second mounting sleeve connected to the casing; The third support portion is arranged on the outer periphery of the second mounting sleeve, and a portion of the box body is sandwiched between the frame cross beam and the third support portion.

8. The battery box according to claim 7, characterized in that: A portion of the second mounting sleeve is inserted into the casing and is threadedly connected to the casing.

9. The battery box according to claim 7, characterized in that: The box body includes a stacked heat exchange plate and a bottom guard plate, and the third support portion includes: a first step, wherein the heat exchange plate is sandwiched between the frame crossbeam and the first step; The second step is arranged on a side of the first step away from the frame cross beam, and the bottom guard plate is clamped between the heat exchange plate and the second step.

10. The battery box according to claim 9, characterized in that: The mounting assembly further includes a second seal, which is sandwiched between the frame crossbeam and the heat exchange plate.

11. The battery box according to any one of claims 1 to 6, characterized in that: The frame cross beam further comprises a reinforcing cross plate, wherein the reinforcing cross plate is arranged in the frame body, and the sleeve passes through the reinforcing cross plate.

12. A battery, characterized in that: include: Battery cells; The battery box according to any one of claims 1 to 11, wherein the battery cells are arranged in the battery box.

13. An electrical device, characterized in that: Comprising the battery of claim 12, the battery being used to provide electrical energy.

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