Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment, the battery device comprises a box body and a battery monomer arranged in the box body, the box body is provided with a top surface and a bottom surface which are oppositely arranged along the height direction of the box body, and a side surface connected with the top surface and the bottom surface, and the side surface is provided with a first mounting part; and in the height direction, the height of the side surface is defined as H, the distance between the first mounting part and the bottom surface is h, and h / H is equal to 0.5-0.8. The battery device can be suitable for installing a higher battery on the beam body of the vehicle, the electric quantity of the battery device is improved, the energy density of the whole vehicle is further improved, and meanwhile the installation firmness is improved.

Description

Technical Field

[0001] This application relates to the technical field of battery devices, and particularly to a battery device and an electrical equipment. Background Art

[0002] The battery device is used to be installed on the electrical equipment. Taking the electrical equipment as a vehicle for example, the battery device is generally arranged at the bottom of the vehicle. Since there are strict requirements for the ground clearance of the battery device, the volume of the battery device is restricted, which also restricts the improvement of the overall vehicle energy density. Utility Model Content

[0003] The main purpose of this application is to propose a battery device and an electrical equipment, aiming to at least improve the technical problem of the limited volume of the battery device.

[0004] According to some embodiments of this application, a battery device is provided, including a box body and battery cells arranged in the box body. The box body has a top surface and a bottom surface oppositely arranged along its height direction, and side surfaces connecting the top surface and the bottom surface. A first mounting portion is arranged on the side surface.

[0005] Defining along the height direction, the height of the side surface is H, and the distance between the first mounting portion and the bottom surface is h, then: h / H = 0.5 - 0.8.

[0006] By arranging the first mounting portion on the side surface of the box body and setting the position of the first mounting portion at 0.5 - 0.8 of the entire side surface, the locking position is set higher, that is, farther from the bottom surface. By adjusting the position of the first mounting portion in the height direction, a battery device with a higher height can be firmly installed, and a battery device with a larger power capacity can be installed and accommodated, which is beneficial to improving the installation reliability of the battery device and the overall vehicle energy density.

[0007] In some embodiments, along the height direction, the height of the side surface is 490 mm, and the distance between the first mounting portion and the bottom surface is 245 mm - 392 mm.

[0008] By designing the distance of the first mounting portion within a suitable range, not only can the connection stability of the battery device on the vehicle be improved, but also enough installation positions can be reserved for the first mounting portion.

[0009] In some embodiments, mounting holes are arranged on the top surface, and the mounting holes are used to connect with the beam of the vehicle.

[0010] By arranging the mounting holes on the top surface and connecting with the beam of the vehicle, the battery device is locked from the top surface of the box body, which is beneficial to improving the installation reliability of the battery device.

[0011] In some embodiments, the top surface protrudes toward a side away from the bottom surface to form a reinforcing rib, and the mounting hole is provided on the reinforcing rib.

[0012] By arranging reinforcing ribs on the top surface and arranging the mounting holes on the reinforcing ribs, the strength of the top surface can be improved and the risk of tensile damage to the top surface can be reduced.

[0013] In some embodiments, there are multiple first mounting portions, and the multiple first mounting portions are arranged on two sides of the side along the first direction, and the first mounting portions on each side are arranged at intervals along the second direction, the first direction is the width direction of the box body, and the second direction is the length direction of the box body.

[0014] By arranging the first mounting parts on both sides of the box body along the width direction, it is convenient to connect with the main beams on both sides respectively, and multiple first mounting parts are arranged along the length direction, which can increase the locking positions and improve the firmness of the connection between the battery device and the main beam.

[0015] In some embodiments, the side surface is further provided with a second mounting portion, and the second mounting portion is arranged on a side of the first mounting portion close to the bottom surface.

[0016] By additionally providing a second mounting portion along the height direction on the basis of providing the first mounting portion, a locking position can be added in the height direction, thereby improving the reliability of the installation of the battery device.

[0017] In some embodiments, the box body includes a main body having an opening and a cover plate covering the opening, the cover plate has the top surface, the main body has the bottom surface, the first side surround of the cover plate and the second side surround of the main body cooperate to form the side surface; the first mounting portion is arranged on the first side surround, or the first mounting portion is arranged on the second side surround.

[0018] By arranging the first mounting portion on the first side surround or the second side surround, it is applicable to different structural forms of the main body and the cover body, thereby improving the scope of application of the present application.

[0019] In some embodiments, the first mounting portion includes a connecting plate mounted on the side surface, the connecting plate is provided with a threaded hole, and the threaded hole is used to be connected to the beam body of the vehicle through a threaded member.

[0020] The first mounting portion includes a connecting plate, and threaded holes are provided on the connecting plate for connecting with the main beam through threaded parts. A detachable connection method is adopted, which makes installation and maintenance more convenient.

[0021] In some embodiments, a clamping strip is provided on the side surface, and the first mounting portion has a clamping slot provided on the connecting plate, and the clamping slot is clamped with the clamping strip.

[0022] By arranging the card strips and the card slots to connect and adopting a movable connection method, the installation and removal of the connecting plate are facilitated, and the connecting plate can be installed to a corresponding position as needed, thereby improving the flexibility of installation.

[0023] In some embodiments, the clip strip is extended along a second direction, and the second direction is the length direction of the box body.

[0024] By arranging the clamping strip to extend along the length direction of the box body, a plurality of connecting plates can be arranged on the clamping strip, and the plates can be locked and fixed from different positions, thereby improving the reliability of the connection between the box body and the beam body.

[0025] In some embodiments, there are two card strips, which are arranged at intervals along the height direction of the box body. There are also two card slots, which are respectively arranged on both sides of the connecting plate along the height direction of the box body, and the card slots are connected to the card strips one by one.

[0026] By providing two card strips and two card slots, the connection plate can be fixed at two positions, thereby improving the reliability of the connection.

[0027] According to some embodiments of the present application, the present application provides a battery device, including a box body and a battery cell arranged in the box body, the box body has a top surface and a bottom surface arranged oppositely along its height direction, and a side surface connecting the top surface and the bottom surface, the side surface is provided with a first mounting portion and a second mounting portion, the number of the first mounting portions is multiple, the multiple first mounting portions are arranged on both sides of the side surface along the first direction, the first mounting portions on each side are arranged at intervals along the second direction, the first direction is the width direction of the box body, the second direction is the length direction of the box body, and the second mounting portion is arranged on a side of the first mounting portion close to the bottom surface; define the height of the side surface along the height direction as H, the distance between the first mounting portion and the bottom surface as h, then: h / H=0.5~0.8. The top surface protrudes toward the side away from the bottom surface as a reinforcing rib, and the reinforcing rib is provided with the mounting hole, and the mounting hole is used to connect with the crossbeam of the vehicle. The first mounting portion includes a connecting plate installed on the side surface, and the connecting plate is provided with a threaded hole, and the threaded hole is used to connect with the main beam of the vehicle through a screw member. This embodiment can install a battery device with a larger height, which can increase the volume of the battery device, increase the power of the battery device, and thus improve the energy density of the entire vehicle.

[0028] According to some embodiments of the present application, the present application provides an electrical device, the electrical device includes a beam body and the battery device as described in any one of the above, the beam body includes a cross beam and two main beams arranged in parallel, both ends of the cross beam are respectively connected to the two main beams, the first mounting portion is connected to the main beam through a threaded member, and the top surface of the box body is arranged higher than the top end of the main beam.

[0029] By arranging the cross beam to be flush with the top end of the main beam or the cross beam to be higher than the main beam, therefore, the battery device can be arranged higher. In a specific embodiment, the top surface of the box body of the battery device can be arranged higher than the top end of the main beam. In this way, the volume of the battery device can be set larger, and thus more battery cells can be accommodated, the capacitance of the battery device can be increased, and further the energy density of the whole vehicle can be increased.

[0030] In some embodiments, the cross beam is arranged at an interval from the top surface.

[0031] By arranging the cross beam at an interval from the top surface, a space is reserved for the deformation of the cross beam, which can play a better role in protecting the box body.

[0032] In some embodiments, the beam body further includes two connecting members, the two connecting members are respectively connected to the two main beams in one-to-one correspondence, and the two connecting members respectively extend out of the top ends of the corresponding main beams, and both ends of the cross beam are respectively connected to the two connecting members.

[0033] By arranging the connecting members to extend out of the top ends of the corresponding main beams, a space is provided between the cross beam and the top ends of the main beams. The space can accommodate the battery device. It is equivalent to that the battery device can extend out of the opening at the top of the accommodating space and extend into the interval, making full use of the space at the top end of the main beam, which can increase the volume of the battery device and further increase the volume energy density of the vehicle.

[0034] In some embodiments, the cross beam includes a groove body having a notch and a flange provided at the edge of the notch, the mounting hole on the top surface is connected to the flange through a threaded member, an energy absorption space communicating with the notch is provided in the groove body, and the notch faces the top surface.

[0035] By arranging the groove body of the cross beam with an energy absorption space, it can absorb energy when being impacted, reducing the risk of the battery device exploding or catching fire due to excessive collision or impact.

[0036] In some embodiments, the electrical device further includes an adapter plate mounted on the main beam, the first mounting portion includes a connecting plate provided on the side surface, and the adapter plate is connected to the connecting plate through a threaded member.

[0037] The battery device is detachably mounted on the main beam by providing an adapter plate on the main beam and connecting the adapter plate to the connection plate.

[0038] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented in accordance with the content of the description. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the following specifically illustrates the specific embodiments of the present application. Description of the Drawings

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0040] Figure 1 Structural schematic diagram of a vehicle according to some embodiments of the present application;

[0041] Figure 2 Exploded structural schematic diagram of a battery device according to some embodiments of the present application;

[0042] Figure 3 Three-dimensional structural schematic diagram of a battery device according to some embodiments of the present application;

[0043] Figure 4 Schematic diagram of a battery device according to some embodiments of the present application from a perspective;

[0044] Figure 5 Partial three-dimensional structural schematic diagram of a vehicle according to some embodiments of the present application;

[0045] Figure 6 Another three-dimensional structural schematic diagram of a battery device according to some embodiments of the present application;

[0046] Figure 7 For Figure 3 Enlarged structural schematic diagram at A;

[0047] Figure 8 For Figure 5 Structural schematic diagram at B;

[0048] Figure 9 Structural schematic diagram of a cross beam and a connecting member of a vehicle according to some embodiments of the present application from a perspective;

[0049] Figure 10 Structural schematic diagram of a cross beam and a connecting member of a vehicle according to some embodiments of the present application from another perspective.

[0050] Explanation of the reference numerals in the drawings:

[0051] 1000, vehicle;

[0052] 100, battery device; 200, control device; 300, motor;

[0053] 10, box body; 101, cover plate; 102, body;

[0054] 11, top surface; 111, mounting hole; 112, reinforcing rib; 12, side surface; 13, bottom surface; 14, clamping strip;

[0055] 20, battery cell;

[0056] 30, first mounting portion; 31, connecting plate; 32, threaded hole; 33, card slot;

[0057] 40, second mounting portion;

[0058] 50, main beam; 51, top end; 52, bottom end;

[0059] 60, cross beam; 61, trough body; 62, flanging; 63, energy absorption space;

[0060] 70, connecting piece; 71, first plate segment; 72, second plate segment.

[0061] The realization of the purpose, functional features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Specific embodiments

[0062] Next, the technical solutions in this embodiment will be clearly and completely described in conjunction with the accompanying drawings in this embodiment. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0063] It should be noted that all directional indications (such as up, down, left, right, front, back...) in this embodiment are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0064] In addition, the descriptions such as "first" and "second" in this application are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0065] In this application, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0066] In addition, the technical solutions between various embodiments of this application can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0067] In this application, the descriptions of directions such as "up", "down", "front", "back", "left", and "right" are based on the directions shown in the figures, and are only used to explain the relative position relationship between components in the posture shown in the figures. If this specific posture changes, the directional indication will also change accordingly.

[0068] At present, from the perspective of the development of the market situation, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power stations, but also widely used in electric transportation tools such as electric bicycles, electric motorcycles, and electric vehicles, as well as in multiple fields such as military equipment and aerospace. With the continuous expansion of the application fields of power batteries, the market demand is also constantly increasing.

[0069] The battery device is used to be installed on an electrical device. Taking the electrical device as a vehicle as an example, due to the reasonable weight distribution and safety requirements of the vehicle, the battery device is generally arranged at the bottom of the vehicle. To reduce the risk of the battery device colliding with the protrusions on the ground during vehicle driving, there are strict requirements and limitations on the ground clearance of the battery device, which also limits the volume of the battery device. Since the energy supply of the battery device is mainly determined by the battery cells in the internal space, in the case where the energy supply of a single battery cell cannot be greatly improved in a short time, how to maximize the use of the space of the vehicle to increase the volume of the battery device and install more battery cells is the goal that those skilled in the art have been pursuing.

[0070] After careful research, the applicant found that the beam body of the vehicle includes a main beam and a cross beam. The two ends of the cross beam are respectively connected to the main beam to strengthen the main beam. Generally speaking, the two ends of the cross beam are connected to the middle position of the main beam in the height direction of the box body. The battery device is arranged below the cross beam. In this way, in the height direction, the bottom of the battery device is limited by the height from the ground and cannot be made too low, and the top is limited by the interference of the cross beam and cannot be made too high, resulting in the limited volume of the battery device and making it difficult to improve the overall vehicle energy density.

[0071] After further research, the applicant found that after some vehicles are installed, there is still some spare space at the top of the main beam, and there is also a certain distance between the cross beam and the top of the main beam. However, at the same time, due to the setting of the cross beam, the interference between the battery device and the cross beam causes the battery device to be only arranged below the cross beam. In this regard, the applicant considered whether the cross beam can be made higher, that is, the cross beam is arranged higher than the top of the main beam, and the main beam and the cross beam are connected by setting additional connecting parts, so that the battery device can be made higher, thereby increasing the volume of the battery device and then increasing the power. After trying to make the battery device higher, the side of the box body is still locked to the main beam, but it is found that the installation reliability of the battery device becomes lower, specifically manifested as the battery device is easy to loosen. After further research, the applicant found that a main reason for this looseness is that after the battery device is made higher, the locking position is relatively low, resulting in an unstable center of gravity of the battery device and easy to shake during use.

[0072] Therefore, the applicant provides a new structural design of the battery device. Specifically, the battery device includes a box body and battery cells arranged in the box body. The box body has a top surface and a bottom surface oppositely arranged along its height direction, and a side surface connecting the top surface and the bottom surface. The side surface is provided with a first mounting portion; it is defined that along the height direction, the height of the side surface is H, and the distance between the first mounting portion and the bottom surface is h, then: h / H = 0.5 to 0.8. This application can be applied to install a battery device with a higher height on the beam body of the vehicle, improve the power of the battery device, and then improve the overall vehicle energy density, while improving the installation firmness.

[0073] Please refer to Figure 1 , Figure 1Schematic structural diagram of vehicle 1000 provided by some embodiments of the present application. The electrical device can be vehicle 1000, and vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is disposed inside vehicle 1000, and the battery device 100 can be disposed at the bottom, head or tail of vehicle 1000. The battery device 100 can be used for power supply of vehicle 1000. For example, the battery device 100 can be used as the operating power source of vehicle 1000. Vehicle 1000 can also include a control device 200 and a motor 300. The control device 200 is used to control the battery device 100 to supply power to the motor 300. For example, it is used for the working power requirements during the start, navigation and driving of vehicle 1000.

[0074] In some embodiments of the present application, the battery device 100 can not only be used as the operating power source of vehicle 1000, but also be used as the driving power source of vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for vehicle 1000.

[0075] Please refer to Figure 2 , Figure 2 Exploded structural diagram of battery device 100 provided by some embodiments of the present application. The battery device 100 includes a box body 10 and battery cells 20, and the battery cells 20 are accommodated in the box body 10. Among them, the box body 10 is used to provide an accommodation cavity for the battery cells 20, and the box body 10 can adopt various structures. In some embodiments, the box body 10 can include a cover plate 101 and a main body 102. The cover plate 101 and the main body 102 are covered with each other, and the cover plate 101 and the main body 102 jointly define an accommodation cavity for accommodating the battery cells 20. The main body 102 can be a hollow structure with one end open, and the cover plate 101 can be a plate-like structure. The cover plate 101 is covered on the open side of the main body 102 so that the cover plate 101 and the main body 102 jointly define an accommodation cavity; the cover plate 101 and the main body 102 can also both be hollow structures with one side open, and the open side of the cover plate 101 is covered on the open side of the main body 102. Of course, the box body 10 formed by the cover plate 101 and the main body 102 can be of various shapes, such as a cylinder, a cuboid, etc.

[0076] In the battery device 100, there may be multiple battery cells 20, and the multiple battery cells 20 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box 10; of course, the battery device 100 may also be a battery module formed by connecting multiple battery cells 20 in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 10. The battery device 100 may also include other structures, for example, the battery device 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 20.

[0077] Each battery cell 20 may 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 may be cylindrical, flat, rectangular, or in other shapes.

[0078] Reference Figure 3 and Figure 4 According to some embodiments of the present application, the present application provides a battery device 100, including a box body 10 and a battery cell 20 disposed in the box body 10, the box body 10 has a top surface 11 and a bottom surface 13 disposed opposite to each other along its height direction, and a side surface 12 connecting the top surface 11 and the bottom surface 13, and the side surface 12 is provided with a first mounting portion 30;

[0079] Define the height of the side surface 12 along the height direction as H, and the distance between the first mounting portion 30 and the bottom surface 13 as h, then: h / H=0.5~0.8.

[0080] Reference Figure 3 The bottom surface 13 of the box body 10 is generally facing the ground when in use, and the top surface 11 of the box body 10 is generally facing away from the ground when in use, and the top surface 11 and the bottom surface 13 are arranged opposite to each other. The height direction referred to in this application refers to the direction perpendicular to the top surface 11 of the box body 10, which is generally also the vertical direction of the battery device 100 when in use. Figure 3 As shown by the arrow Z in the middle. The length direction of the box body 10 is also the length direction of the main beam 50 of the vehicle 1000. Figure 3 As shown by the arrow X in the middle, it is also the second direction referred to in this application; the width direction of the box body 10 is as shown in FIG. Figure 3 The middle arrow Y indicates the first direction in this application.

[0081] It should be noted that, refer to Figure 5, the battery device 100 in the embodiment of the present application is applied to an electrical device. Taking the electrical device as a vehicle 1000 as an example, the vehicle 1000 includes a beam body and the battery device 100. The beam body includes a cross beam 60 and two main beams 50 arranged in parallel. Two ends of the cross beam 60 are respectively connected to the two main beams 50. Generally, the top end 51 of the main beam 50 is higher than the cross beam 60, and the battery device 100 is arranged below the cross beam 60. In this way, the battery device 100 is limited by the obstruction of the cross beam 60 and cannot be made too high. If it is made too high, it will interfere with the cross beam 60. Generally, the top surface 11 of the box body 10 of the battery device 100 is lower than the top end 51 of the main beam 50. In the structure of the vehicle 1000 to which the battery device 100 of the present application is applied, the cross beam 60 is arranged flush with the top end 51 of the main beam 50, or the cross beam 60 is higher than the main beam 50. Therefore, the battery device 100 can be set higher. In a specific embodiment, the top surface 11 of the box body 10 of the battery device 100 can be set higher than the top end 51 of the main beam 50. In this way, the volume of the battery device 100 can be set larger, and thus more battery cells 20 can be accommodated, the capacitance of the battery device 100 can be improved, and the energy density of the whole vehicle can be further improved. This embodiment is particularly applicable to application scenarios where there is sufficient space above the main beam 50.

[0082] According to the conventional method of installing the battery device 100, a locking structure is arranged on the side surface 12 of the box body 10. The locking structure is generally arranged near the bottom surface 13, which is convenient for installation. However, after installation, the battery device 100 is prone to shaking and generates a large torque. The applicant has carefully studied and found that since the height of the battery device 100 is set higher compared with the conventional technology, the center of gravity position becomes higher. If the installation point of the battery device 100 is set near the bottom surface 13 according to the conventional technical means, the battery device 100 is prone to shaking. Therefore, in the embodiment of the present application, the locking structure on the side surface 12 of the battery device 100 is designed to be higher. But it cannot be designed too high. If it is designed too high, there will not be enough distance on the side surface 12 of the box body 10 to arrange the first installation part 30. Refer to Figure 4 , here the height of the entire side surface 12 of the box body 10 in the height direction is defined as H, and the distance between the first installation part 30 and the bottom surface 13 is h. Then there is: h / H = 0.5 - 0.8. The distance between the first installation part 30 and the bottom surface 13 here refers to the vertical distance between the lowest position of the first installation part 30 in the height direction and the bottom surface 13, such as Figure 4 shown by h in. If the first installation part 30 is a mounting plate, it is the distance between the lowest position of the mounting plate in the height direction and the bottom surface 13.

[0083] It should be emphasized here that the application scenario of this application is an innovative design made for a new type of vehicle structure design method in order to increase the power of the battery device 100. When the height of the battery device 100 increases, in order to ensure that the battery device 100 can still be firmly installed on the beam body. The technical problems to be solved by this application are how to increase the power of the battery device 100 and how to ensure the tight installation of the battery device 100 and the beam body when the height of the battery device 100 increases. Instead of simply adjusting the position of the first mounting portion 30 on the side surface 12.

[0084] By providing the first mounting portion 30 on the side surface 12 of the box body 10, setting the position of the first mounting portion 30 at the position of 0.5 to 0.8 of the entire side surface 12, and setting the locking position higher, that is, farther from the bottom surface 13. By adjusting the position of the first mounting portion 30 in the height direction, the battery device 100 with a higher height can be firmly installed, and the battery device 100 with a larger power can be installed and accommodated, which is beneficial to improving the installation reliability of the battery device 100 and the vehicle energy density.

[0085] In some embodiments, along the height direction, the height of the side surface 12 is 490 mm, and the distance between the first mounting portion 30 and the bottom surface 13 is 245 mm to 392 mm.

[0086] This embodiment gives a specific example for illustration. The height of the side surface 12 is actually the height of the battery device 100. When the height of the side surface 12 is 490 mm, the minimum distance between the first mounting portion 30 and the bottom surface 13 is 245 mm, and the maximum is 392 mm. Of course, as described above, the distance between the first mounting portion 30 and the bottom surface 13 refers to the side of the first mounting portion 30 closest to the bottom surface 13, that is, the lowest position, and the distance from the bottom surface 13. This distance cannot be designed too large. If it is designed too large, there will not be enough space on the side surface 12 of the box body 10 to provide the first mounting portion 30.

[0087] By setting the distance of the first mounting portion 30 within a suitable range, both the stability of the connection of the battery device 100 on the vehicle 1000 can be improved, and enough installation positions can be reserved for the first mounting portion 30.

[0088] Refer to Figure 3 , in some embodiments, mounting holes 111 are provided on the top surface 11, and the mounting holes 111 are used to connect with the beam body of the vehicle 1000.

[0089] The mounting holes 111 are hole positions provided on the top surface 11 and can be screw holes. Referring to Figure 5The beam body includes a crossbeam 60 and a main beam 50. The crossbeam 60 is located above the battery device 100, that is, above the top surface 11. The crossbeam 60 can be installed on the mounting hole 111 through a screw through the crossbeam 60 to install the battery device 100 on the crossbeam 60. As the battery device 100 is made higher, the volume will become larger, the number of battery cells 20 accommodated will increase, and the weight will also increase. In order to further improve the stability of the installation of the battery device 100, on the basis of setting the first mounting portion 30 on the side 12 to connect with the main beam 50, a crossbeam 60 can be added to lock and install the top surface 11 of the battery device 100 from the top. Specifically, the number of mounting holes 111 can be multiple, and the multiple mounting holes 111 can be arranged at intervals on the top surface 11 along the length direction of the box body 10, or can be arranged at intervals on the top surface 11 along the width direction of the box body 10, or can be arranged at intervals along the length direction of the box body 10 and the width direction of the box body 10 at the same time.

[0090] By providing the mounting hole 111 on the top surface 11 and connecting with the beam of the vehicle 1000 , the battery device 100 is locked from the top surface 11 of the box body 10 , which is beneficial to improve the reliability of the installation of the battery device 100 .

[0091] Reference Figure 3 In some embodiments, the top surface 11 protrudes toward a side away from the bottom surface 13 to form a reinforcing rib 112 , and a mounting hole 111 is provided on the reinforcing rib 112 .

[0092] Generally speaking, the top surface 11 of the box body 10 is the cover plate 101, and the cover plate 101 does not need to bear the weight of the battery cell 20, and the strength that it can withstand is not large in design. In the embodiment of the present application, a threaded member is provided on the crossbeam 60 to mount the battery device 100 on the crossbeam 60. The top surface 11 of the box body 10 may be subjected to a large tensile force, and the weight of the battery device 100 in the present application is greater. Therefore, a reinforcing rib 112 may be provided on the top surface 11. The reinforcing rib 112 may be formed by the top surface 11 protruding toward the side away from the bottom surface 13, and it can also be considered that part of the top surface 11 is designed to be thicker, which can improve the strength. In addition, the mounting hole 111 is provided on the reinforcing rib 112, which can also reduce the adverse effect of the design of the mounting hole 111 on the strength of the top surface 11.

[0093] By providing the reinforcing ribs 112 on the top surface 11 and arranging the mounting holes 111 on the reinforcing ribs 112 , the strength of the top surface 11 can be improved and the risk of the top surface 11 being damaged by tension can be reduced.

[0094] Reference Figure 3, in some embodiments, the number of the first mounting parts 30 is multiple, and the multiple first mounting parts 30 are respectively arranged on two side edges of the side surface 12 along the first direction, and the first mounting parts 30 on each side edge are arranged at intervals along the second direction. The first direction is the width direction of the box body 10, and the second direction is the length direction of the box body 10.

[0095] Taking the box body 10 as a cuboid as an example, the side surface 12 of the box body 10 includes four side edges, and the first mounting parts 30 in the present application are arranged on two opposite side edges of the box body 10 along the width direction, and a main beam 50 is respectively arranged beside these two side edges. For the convenience of description, these two side edges are defined as the locking surfaces. The first mounting parts 30 are arranged on both locking surfaces. In this way, the box body 10 can be fixedly installed from both sides in the width direction of the box body 10, so that the force is evenly distributed and the reliability of the installation can be improved. Moreover, a plurality of first mounting parts 30 are arranged at intervals along the length direction of the box body 10 on each locking surface, and the battery device 100 can be locked at multiple points in the length direction of the box body 10, which is beneficial to further improving the reliability of the installation. In addition, similarly, the number of the second mounting parts 40 is multiple, and the multiple second mounting parts 40 are respectively arranged on two side edges of the side surface 12 along the first direction, and the second mounting parts 40 on each side edge are arranged at intervals along the second direction, which is also for locking from both sides in the width direction of the box body 10, and adding locking positions to improve the firmness of the installation, so that the battery device 100 is not easy to shake during use.

[0096] By arranging the first mounting parts 30 on both sides in the width direction of the box body 10, it is convenient to be respectively connected with the main beams 50 on both sides, and a plurality of first mounting parts 30 are arranged along the length direction, which can increase the locking positions and improve the firmness of the connection between the battery device 100 and the main beam 50.

[0097] Refer to Figure 6 , in some embodiments, a second mounting part 40 is further arranged on the side surface 12, and the second mounting part 40 is arranged on the side of the first mounting part 30 close to the bottom surface 13.

[0098] Both the second mounting part 40 and the first mounting part 30 can be connected with the main beam 50. Specifically, when the battery device 100 is placed vertically and the top surface 11 faces upward and the bottom surface 13 faces the ground, the second mounting part 40 is below the first mounting part 30, which can be obliquely below the first mounting part 30 or directly below the first mounting part 30, and the first mounting part 30 and the second mounting part 40 can be arranged along the height direction. Since the height of the battery device 100 is relatively large, by arranging the second mounting part 40 to be connected with the main beam 50 along the height direction, the battery device 100 can be fixedly installed from one more position.

[0099] By additionally providing a second mounting portion 40 in the height direction on the basis of providing the first mounting portion 30, a locking position can be added in the height direction, improving the reliability of the installation of the battery device 100.

[0100] In some embodiments, the box body 10 includes a main body 102 having an opening and a cover plate 101 covering the opening. The cover plate 101 has a top surface 11, the main body 102 has a bottom surface 13, and the first side perimeter of the cover plate 101 and the second side perimeter of the main body 102 cooperate to form a side surface 12; the first mounting portion 30 is provided on the first side perimeter, or the first mounting portion 30 is provided on the second side perimeter.

[0101] The main body 102 forms a receiving groove, and a plurality of battery cells 20 are arranged in the receiving groove. The cover plate 101 covers the opening to enclose the receiving groove, providing a relatively stable space for the battery cells 20. The cover plate 101 can be detachably connected to the main body 102, such as by screw connection or snap connection. The cover plate 101 has a top surface 11, the main body 102 has a bottom surface 13, and the first side perimeter of the cover plate 101 and the second side perimeter of the main body 102 cooperate and are spliced to form a side surface 12. The first side perimeter and the second side perimeter can be connected by locking members such as screws or bolts. In the conventional means, the position where the first mounting portion 30 is provided is relatively close to the bottom surface 13. Therefore, generally, the first mounting portion 30 is provided on the second side perimeter of the main body 102. In this embodiment, the position of the first mounting portion 30 is set relatively high. Therefore, the first mounting portion 30 can be provided on the first side perimeter of the cover plate 101. Of course, in another embodiment, the height of the main body 102 can also be designed to be larger, the height of the cover plate 101 can be designed to be smaller, and the first mounting portion 30 is provided on the side of the main body 102 close to the cover plate 101, which can also meet the installation requirements of the position of the first mounting portion 30.

[0102] By providing the first mounting portion 30 on the first side perimeter or the second side perimeter, it is applicable to different structural forms of the main body 102 and the cover plate 101, improving the application range of the present application.

[0103] Refer to Figure 5 and Figure 7 In some embodiments, the first mounting portion 30 includes a connecting plate 31 mounted on the side surface 12. A threaded hole 32 is provided on the connecting plate 31, and the threaded hole 32 is used to connect to the beam body of the vehicle 1000 through a threaded member.

[0104] Regarding the implementation manner of the first installation part 30, the present application does not make specific limitations, as long as it can be connected to the main beam 50 of the beam body. As a specific embodiment of the first installation part 30, the first installation part 30 may include a connecting plate 31. The connecting plate 31 is installed on the side surface 12 of the box body 10. Threaded holes 32 are provided on the connecting plate 31, and holes are provided at corresponding positions on the main beam 50. The battery device 100 is installed on the main beam 50 by passing threaded members through the holes and the threaded holes 32. Here, the number of the threaded holes 32 may also be multiple. The multiple threaded holes 32 may be arranged along the height direction, may be arranged along the length direction, or a part may be arranged along the height direction and the other part may be arranged along the length direction. The corresponding threaded members are the same in number as the threaded holes 32 and are connected in one-to-one correspondence.

[0105] By providing that the first installation part 30 includes a connecting plate 31, and threaded holes 32 are provided on the connecting plate 31 for connecting with the main beam 50 through threaded members, and adopting a detachable connection method, both installation and maintenance are relatively convenient.

[0106] Refer to Figure 3 and Figure 7 , in some embodiments, a clamping strip 14 is provided on the side surface 12, and the first installation part 30 has a clamping groove 33 provided on the connecting plate 31, and the clamping groove 33 is clamped with the clamping strip 14.

[0107] The clamping strip 14 is provided on two locking surfaces of the side surface 12 along the width direction, and the clamping groove 33 is provided on one side of the connecting plate 31 facing the locking surface. The clamping groove 33 is clamped with the clamping strip 14 to install the connecting plate 31 on the box body 10. Specifically, regarding the material of the clamping strip 14, a plastic part may be used, or a metal part with certain elasticity may be used. When a metal part is used, it may be made of the same material as the box body 10. The material of the clamping groove 33 may also be made of a metal material with certain elasticity, such as a thinner steel sheet or copper sheet, so that installation and disassembly are convenient, and when it is necessary to change the locking position of the side surface 12, the connecting plate 31 can be clamped to the corresponding position.

[0108] By providing the connection between the clamping strip 14 and the clamping groove 33 and adopting a movable connection method, it is convenient for the installation and disassembly of the connecting plate 31, and the connecting plate 31 can be installed at the corresponding position according to needs, improving the flexibility of installation.

[0109] Refer to Figure 3 and Figure 7 , in some embodiments, the clamping strip 14 extends along a second direction, and the second direction is the length direction of the box body 10.

[0110] The second direction is the length direction of the box body 10, and the clamping strip 14 extends along the second direction. A plurality of connecting plates 31 can be provided on the clamping strip 14 to lock the box body 10 from different positions of the box body 10. At the same time, a whole clamping strip 14 is provided along the length direction of the box body 10, and the position of the connecting plate 31 on the box body 10 can be adjusted, which is suitable for situations with different locking positions. For example, although different types of vehicles 1000 have the same battery device 100, the specific locking positions with the beam body are different. Therefore, the connection between the beam body and the battery device 100 can be achieved by adjusting the position of the connecting plate 31.

[0111] By arranging the clamping strip 14 to extend along the length direction of the box body 10 , a plurality of connecting plates 31 can be arranged on the clamping strip 14 , and locked and fixed from different positions, thereby improving the reliability of the connection between the box body 10 and the beam body.

[0112] Reference Figure 3 and Figure 7 In some embodiments, there are two card strips 14, which are arranged at intervals along the height direction of the box body 10, and there are two card slots 33, which are respectively arranged on both sides of the connecting plate 31 along the height direction of the box body 10, and the card slots 33 are connected to the card strips 14 one by one.

[0113] There are two clamping strips 14, which are arranged at intervals along the height direction of the box body 10. The corresponding connecting plate 31 is also provided with two clamping slots 33, which are provided on both sides of the connecting plate 31 along the height direction of the box body 10. For example, the clamping strip 14 includes an upper sub-strip and a lower sub-strip, and the clamping slot 33 includes an upper sub-slot and a lower sub-slot, and the upper sub-slot is clamped on the upper sub-strip, and the lower sub-slot is clamped on the lower sub-strip. Because the battery device 100 with a larger height is generally heavier, it is inevitable that there will be slight shaking during use, so setting two clamping positions can make the connection between the connecting plate 31 and the box body 10 more secure.

[0114] By providing two clamping strips 14 and two clamping slots 33 , the connecting plate 31 can be fixed at two positions, thereby improving the reliability of the connection.

[0115] According to some embodiments of the present application, the present application provides a battery device 100, including a box body 10 and a battery cell 20 arranged in the box body 10, the box body 10 has a top surface 11 and a bottom surface 13 arranged opposite to each other along its height direction, and a side surface 12 connecting the top surface 11 and the bottom surface 13, the side surface 12 is provided with a first mounting portion 30 and a second mounting portion 40, the number of the first mounting portions 30 is multiple, the multiple first mounting portions 30 are arranged on both side edges of the side surface 12 along the first direction, the first mounting portions 30 on each side edge are arranged at intervals along the second direction, the first direction is the width direction of the box body 10, the second direction is the length direction of the box body 10, and the second mounting portion 40 is arranged on a side of the first mounting portion 30 close to the bottom surface 13; define that along the height direction, the height of the side surface 12 is H, and the distance between the first mounting portion 30 and the bottom surface 13 is h, then: h / H=0.5~0.8. The top surface 11 protrudes toward the side away from the bottom surface 13 to form a reinforcing rib 112, and a mounting hole 111 is provided on the reinforcing rib 112, and the mounting hole 111 is used to connect with the crossbeam 60 of the vehicle 1000. The first mounting portion 30 includes a connecting plate 31 mounted on the side 12, and a threaded hole 32 is provided on the connecting plate 31, and the threaded hole 32 is used to connect with the main beam 50 of the vehicle 1000 through a screw. This embodiment can install a battery device 100 with a larger height, which can increase the volume of the battery device 100, increase the power of the battery device 100, and thus improve the energy density of the entire vehicle.

[0116] Reference Figure 5 and Figure 8 According to some embodiments of the present application, the present application provides an electrical device, which includes a beam body and a battery device 100 as described above, wherein the beam body includes a crossbeam 60 and two main beams 50 arranged in parallel, wherein both ends of the crossbeam 60 are respectively connected to the two main beams 50, and the first mounting portion 30 is connected to the main beam 50 through a screw member, and the top surface 11 of the box body 10 is arranged higher than the top end 51 of the main beam 50.

[0117] The battery device 100 in the embodiments of the present application is applied to an electrical device. Taking the electrical device as a vehicle 1000 for example, the vehicle 1000 includes a beam body and the battery device 100. The beam body includes a cross beam 60 and two main beams 50 arranged in parallel. Two ends of the cross beam 60 are respectively connected to the two main beams 50. Generally speaking, the top end 51 of the main beam 50 is arranged higher than the cross beam 60, and the battery device 100 is arranged below the cross beam 60. In this way, the battery device 100 is limited by the block of the cross beam 60 and cannot be made too high. If it is made too high, it will interfere with the cross beam 60. Generally speaking, the top surface 11 of the box body 10 of the battery device 100 is lower than the top end 51 of the main beam 50. In the structure of the vehicle 1000 to which the battery device 100 of the present application is applied, the cross beam 60 is arranged flush with the top end 51 of the main beam 50, or the cross beam 60 is arranged higher than the main beam 50. Therefore, the battery device 100 can be arranged higher. In a specific embodiment, the top surface 11 of the box body 10 of the battery device 100 can be arranged higher than the top end 51 of the main beam 50. In this way, the volume of the battery device 100 can be made larger, and thus more battery cells 20 can be accommodated, the capacitance of the battery device 100 can be improved, and the energy density of the whole vehicle can be further improved.

[0118] By arranging the top surface 11 of the box body 10 to be higher than the top end 51 of the main beam 50, the battery device 100 can be made higher, and the volume of the battery device 100 and the energy density of the whole vehicle can be improved.

[0119] In some embodiments, the cross beam 60 and the top surface 11 are arranged at an interval.

[0120] When the battery device 100 is installed on the vehicle 1000 for use, the battery device 100 may collide with other components of the vehicle 1000, and the cross beam 60 may also collide with other components of the vehicle 1000. By arranging an interval between the cross beam 60 and the top surface 11, a certain deformation space can be given to the cross beam 60. On the one hand, energy can be absorbed during the deformation process of the cross beam 60 to reduce the collision impact. On the other hand, the cross beam 60 will not touch the top surface 11 of the box body 10 under the condition of small deformation, and the box body 10 will not be damaged.

[0121] By arranging the cross beam 60 and the top surface 11 at an interval to reserve space for the deformation of the cross beam 60, better protection can be provided for the box body 10 and the battery cells 20.

[0122] Refer to Figure 8 and Figure 9 , in some embodiments, the beam body further includes two connecting members 70. The two connecting members 70 are respectively connected to the two main beams 50 in a one-to-one correspondence, and the two connecting members 70 respectively extend out of the top ends 51 of the corresponding main beams 50, and two ends of the cross beam 60 are respectively connected to the two connecting members 70.

[0123] In order to maximize the use of the accommodation space between the two main beams 50, the cross beam 60 is connected to the top 51 of the main beam 50, so that the height of the battery device 100 can be made larger. However, since the cross beam 60 is connected to the top 51 of the main beam 50, the height of the battery device 100 cannot be higher than the top 51 of the main beam 50. In some application scenarios, for example, when there is still a large space at the top 51 of the main beam 50, in order to make full use of the space above the top 51 of the main beam 50, the connector 70 can be installed on the main beam 50, and the cross beam 60 can be installed on the connector 70, and the two connectors 70 extend out of the corresponding top 51 of the main beam 50 respectively, and the position where the connector 70 is connected to the cross beam 60 is higher than the top 51 of the main beam 50. In this way, after the cross beam 60 is installed on the connector 70, it will be higher than the top 51, that is, there will be a gap between the cross beam 60 and the top 51 of the main beam 50, that is, the cross beam 60 is supported higher by the connector 70, so that the space at the top 51 of the main beam 50 can be utilized, so that the battery device 100 can be made larger in the height direction.

[0124] By arranging the connecting member 70 to extend out of the top end 51 of the corresponding main beam 50, a gap is set between the cross beam 60 and the top end 51 of the main beam 50. The space in the gap can accommodate the battery device 100, which is equivalent to the battery device 100 extending out of the opening at the top of the accommodating space and extending in the space in the gap. The space at the top end 51 of the main beam 50 is fully utilized, which can increase the volume of the battery device 100 and thereby increase the volume energy density of the vehicle 1000.

[0125] Reference Figure 10 In some embodiments, the connecting member 70 includes a first plate segment 71 and a second plate segment 72 connected to each other. The first plate segment 71 is arranged on the side of the main beam 50 away from the accommodating space. The fastener connects the first plate segment 71 and the main beam 50. The first plate segment 71 and the first mounting portion 30 can also be connected by bolts. The second plate segment 72 extends out of the top end 51 of the main beam 50 and extends toward the accommodating space. The cross beam 60 is connected to the second plate segment 72.

[0126] The first plate segment 71 and the second plate segment 72 are connected to each other and are connected at an angle. Specifically, the first plate segment 71 and the second plate segment 72 can be perpendicular to each other. The first plate segment 71 and the second plate segment 72 can both be set in a plate shape. The first plate segment 71 can be installed on the side of the main beam 50, so that the first plate segment 71 can have a larger connection area with the main beam 50, and the installation strength can be improved by setting multiple connection points. The fastener also connects the first plate segment 71 and the first mounting portion 30, so that the battery device 100 can be installed on the main beam 50 through the first plate segment 71. Similarly, the second plate segment 72 extends toward the accommodating space, can be extended horizontally, has a larger contact area with the crossbeam 60, and the connection strength can also be increased by adding connection points.

[0127] By setting the connecting member 70 to include a first plate segment 71 and a second plate segment 72 that are connected to each other, and the fastener sequentially connects the first plate segment 71 and the main beam 50, and the cross beam 60 is connected to the second plate segment 72, the connection area of each can be increased, thereby enhancing the connection strength.

[0128] In some embodiments, the connecting member 70 is detachably connected to the main beam 50; and / or, the connecting member 70 is detachably connected to the cross beam 60.

[0129] The specific detachable connection method can be a threaded connection method. When disassembling, only the bolt needs to be removed, which is convenient for installation and disassembly. Another advantage of this embodiment is that by removing the connecting member 70, the battery device 100 or the battery device 100 together with the cross beam 60 can be removed from the bottom end 52 of the main beam 50. Because in the actual vehicle 1000 structure, there are many main body structures of the vehicle 1000 above the battery device 100. If the battery device 100 is to be removed from the top end 51, all the frame structures above the main beam 50 need to be removed, which is very troublesome in some cases. Such a setting in this embodiment can facilitate the removal of the battery device 100.

[0130] The detachable connection method is convenient for installation and disassembly. At the same time, by removing the connecting member 70 from the cross beam 60, the battery device 100 or the battery device 100 can be removed from the bottom end 52 of the main beam 50, which is convenient for the removal of the battery device 100.

[0131] Refer to Figure 9 and Figure 10 In some embodiments, the cross beam 60 includes a trough body 61 having a notch and a flange 62 provided on the edge of the notch. The mounting hole 111 on the top surface 11 is connected to the flange 62 through a threaded member. An energy absorption space 63 communicating with the notch is provided in the trough body 61, and the notch faces the top surface 11.

[0132] Specifically, the cross beam 60 can be a channel steel, and flanges 62 are provided on both sides of the channel steel. The notch of the channel steel is the notch of the above-mentioned trough body 61 and faces the cover plate 101. Such a design can fix the battery device 100 by connecting the flange 62 to the mounting hole 111 of the cover plate 101 through a threaded member. At the same time, the energy absorption space 63 formed by the trough body 61 can deform and absorb energy during a collision. For example, when being impacted from the top, the cross beam 60 will block in front of the battery device 100 and will be impacted first. At this time, the trough body 61 can deform to absorb part of the energy, reducing the impact force.

[0133] By providing a groove body 61 of the cross beam 60 with an energy absorption space 63, energy can be absorbed upon impact, reducing the risk of explosion or fire caused by excessive collision or impact on the battery device 100.

[0134] In some embodiments, the electrical device further includes an adapter plate mounted on the main beam 50. The first mounting portion 30 includes a connecting plate 31 provided on the side surface 12, and the adapter plate and the connecting plate 31 are connected by a threaded member.

[0135] The adapter plate is plate-shaped and provided with holes. The adapter plate can be provided on the main beam 50 by welding or threaded connection. The adapter plate and the connecting plate 31 are connected by a threaded member, which can be a bolt or a screw connection. In this way, the battery device 100 can be locked to the main beam 50 through the connection between the adapter plate and the connecting plate 31.

[0136] By providing an adapter plate on the main beam 50 and connecting the adapter plate to the connecting plate 31, the battery device 100 is detachably mounted on the main beam 50.

[0137] According to some embodiments of the present application, the present application provides an electrical device, which includes a beam body and a battery device 100. The beam body includes a cross beam 60 and two parallel main beams 50. The two ends of the cross beam 60 are respectively connected to the two main beams 50. The first mounting portion 30 is connected to the main beam 50 by a threaded member. The top surface 11 of the box body 10 is set higher than the top end 51 of the main beam 50. The cross beam 60 includes a groove body 61 having a notch and a flange 62 provided on the edge of the notch. The mounting hole 111 on the top surface 11 is connected to the flange 62 by a threaded member. An energy absorption space 63 communicating with the notch is provided in the groove body 61, and the notch faces the top surface 11; the cross beam 60 is spaced from the top surface 11. Specifically, the beam body further includes two connecting members 70. The two connecting members 70 are respectively connected to the two main beams 50 in a one-to-one correspondence, and the two connecting members 70 respectively extend out of the top ends 51 of the corresponding main beams 50. The two ends of the cross beam 60 are respectively connected to the two connecting members 70. This electrical device can mount a battery device 100 with a greater installation height, increase the volume of the battery device 100, and thus increase the power of the battery device 100 and the energy density of the whole vehicle.

[0138] The above are only optional embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structural transformation made under the application concept of the present application by using the content of the specification and drawings of the present application, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A battery device, characterized in that: The invention comprises a box body and a battery cell arranged in the box body, wherein the box body has a top surface and a bottom surface arranged opposite to each other along its height direction, and a side surface connecting the top surface and the bottom surface, and the side surface is provided with a first mounting portion; Define that along the height direction, the height of the side surface is H, and the distance between the first mounting portion and the bottom surface is h, then: h / H=0.5~0.

8.

2. The battery device according to claim 1, characterized in that: Along the height direction, the height of the side surface is 490 mm, and the distance between the first mounting portion and the bottom surface is 245 mm to 392 mm.

3. The battery device according to claim 1, characterized in that: The top surface is provided with a mounting hole, and the mounting hole is used to be connected to the beam body of the vehicle.

4. The battery device according to claim 3, characterized in that: The top surface protrudes toward a side away from the bottom surface to form a reinforcing rib, and the mounting hole is arranged on the reinforcing rib.

5. The battery device according to claim 1, characterized in that: The side surface is also provided with a second mounting portion, and the second mounting portion is arranged on a side of the first mounting portion close to the bottom surface.

6. The battery device according to any one of claims 1 to 5, characterized in that: There are multiple first mounting parts, and the multiple first mounting parts are arranged on two side edges of the side along the first direction. The first mounting parts on each side are arranged at intervals along the second direction. The first direction is the width direction of the box body, and the second direction is the length direction of the box body.

7. The battery device according to any one of claims 1 to 5, characterized in that: The box body includes a main body with an opening and a cover plate covering the opening, the cover plate has the top surface, the main body has the bottom surface, the first side surround of the cover plate and the second side surround of the main body cooperate to form the side surface; the first mounting portion is arranged on the first side surround, or the first mounting portion is arranged on the second side surround.

8. The battery device according to any one of claims 1 to 5, characterized in that: The first mounting portion includes a connecting plate mounted on the side surface, and a threaded hole is provided on the connecting plate. The threaded hole is used to be connected to a beam body of the vehicle through a threaded member.

9. The battery device according to claim 8, characterized in that: The side surface is provided with a clamping strip, and the first mounting portion has a clamping slot provided on the connecting plate, and the clamping slot is clamped with the clamping strip.

10. The battery device according to claim 9, characterized in that: There are two card strips, which are arranged at intervals along the height direction, and each card strip is extended along the second direction. There are also two card slots, which are respectively arranged on opposite sides of the connecting plate along the height direction, and the card slots are connected to the card strips in a one-to-one correspondence; the second direction is the length direction of the box body.

11. An electrical device, characterized in that: The electrical equipment includes a beam body and a battery device as described in any one of claims 1 to 10, the beam body includes a crossbeam and two main beams arranged in parallel, the two ends of the crossbeam are respectively connected to the two main beams, the first mounting portion is connected to the main beams through a screw member, and the top surface of the box body is arranged higher than the top of the main beam.

12. The electrical equipment according to claim 11, characterized in that: The cross beam is spaced apart from the top surface.

13. The electrical equipment according to claim 12, characterized in that: The beam body also includes two connecting members, which are connected to the two main beams in a one-to-one correspondence, and the two connecting members are respectively extended from the top ends of the corresponding main beams, and the two ends of the cross beam are respectively connected to the two connecting members.

14. The electrical equipment according to any one of claims 11 to 13, characterized in that: The crossbeam includes a slot body with a slot and a flange arranged at the edge of the slot, the mounting hole on the top surface is connected to the flange by a screw, an energy absorbing space connected to the slot is arranged in the slot body, and the slot is arranged toward the top surface.

15. The electrical equipment according to any one of claims 11 to 13, characterized in that: The electrical equipment further comprises an adapter plate mounted on the main beam, the first mounting portion comprises a connecting plate arranged on the side surface, and the adapter plate and the connecting plate are connected via screws.

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