Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment, and relates to the field of battery production and manufacturing, the battery device comprises a box body and a plurality of battery monomers, the box body comprises a locking assembly, a box body and a box cover; the box body comprises an accommodating cavity and an opening communicated with the accommodating cavity, the box cover covers the opening, and the plurality of single batteries are arranged in the accommodating cavity; the locking assembly comprises a pressing strip, a rigid piece and a fastening piece, the pressing strip is arranged at the opening, at least one end of the pressing strip is provided with a through hole, and the pressing strip is an insulating piece; the rigid piece comprises a mounting column penetrating through the through hole, and the mounting column is provided with a mounting hole penetrating through the mounting column; the fastener penetrates through the mounting hole and is connected to the box body. According to the battery device, the risk of bolt torque attenuation caused by direct locking of the pressing strip by the fastener can be reduced, so that the risk of failure of the battery device is reduced.

Description

Technical Field

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

[0002] The battery device includes a box body and a battery cell. The box body includes a box body and a box cover covering the box body. The battery cell is arranged in the box body. The pressure strip is arranged at the opening of the box body, and the two ends of the pressure strip are respectively fixedly connected to the opposite sides of the box body by bolts, and the middle part of the pressure strip is located at the shoulder position of the battery cell, which is used to limit the thermal expansion of the battery cell. However, the current battery device has the problem of the pressure strip being loose during use, which poses a safety risk. Utility Model Content

[0003] The main purpose of the present application is to provide a battery device and an electrical device, aiming to at least improve the technical problem of the pressure strip of the battery device being loose.

[0004] According to some embodiments of the present application, the present application provides a battery device, including a box body and a plurality of battery cells, the box body including a locking assembly, a box body and a box cover; the box body including a accommodating cavity and an opening connected to the accommodating cavity, the box cover covers the opening, and the plurality of battery cells are arranged in the accommodating cavity; the locking assembly includes a pressure strip, a rigid member and a fastener, the pressure strip is arranged at the opening, at least one end of the pressure strip is provided with a through hole, and the pressure strip is an insulating member; the rigid member includes a mounting column passing through the through hole, the mounting column is provided with a mounting hole passing through the mounting column; the fastener passes through the mounting hole and is connected to the box body.

[0005] By setting a rigid part including a mounting column, the mounting column is passed through the through hole, and the mounting column is formed with a mounting hole for the fastener to pass through. The rigid part plays a role of isolating the fastener and the pressure strip, and the fastener is installed on the box body through the mounting hole. The risk of bolt torque attenuation when the fastener directly locks the pressure strip can be reduced, thereby reducing the risk of failure of the battery device.

[0006] In some embodiments, the pressure strip is a non-metal composite material part, and the rigid part is a metal part.

[0007] By making the pressure strips from non-metallic composite materials, the risk of short circuit under thermal runaway can be reduced; the rigid parts are made of metal, which is easy to manufacture and has low cost.

[0008] In some embodiments, the rigid component includes two rigid sub-components, which are respectively located on opposite sides of the pressure strip, and the rigid sub-component includes a boss penetrating the through hole, and the bosses of the two rigid sub-components are relatively arranged to form the mounting column.

[0009] By setting two rigid sub-components, the two bosses of the two rigid sub-components are respectively inserted into the through hole from both ends of the through hole, the two bosses cooperate to form a mounting column, and the two bosses each form a mounting sub-hole penetrating themselves to cooperate to form a mounting hole. The structure of using two rigid sub-components to cooperate can not only form a mounting hole for the fastener to pass through, but also improve the flexibility of installation.

[0010] In some embodiments, the rigid sub-component further includes a plate body, the boss is extended from the plate body in a thickness direction, and the boss is arranged on a side of the plate body facing the through hole.

[0011] By setting a plate body, a mounting position is provided for the boss, and a through hole is formed on the plate body coaxially with the mounting sub-hole to facilitate the passage of fasteners, and the plate body can also be arranged in a fit with the pressure strip so that the rigid sub-component and the pressure strip are connected.

[0012] In some embodiments, the rigid member further includes a plate body, the mounting post extends from the plate body in a thickness direction, and the mounting post passes through the through hole and abuts against the box body.

[0013] By setting up a rigid part including a plate body and a mounting column, the mounting column can pass through the through hole and abut against the box body. The rigid part only includes one component, which can avoid direct contact between the pressure strip and the fastener, reduce the risk of torque failure, save the number of parts, and reduce the complexity of installation.

[0014] In some embodiments, the length of the mounting post extending out of the through hole is 0.1 mm-0.5 mm.

[0015] By setting the length of the mounting column extending out of the through hole to a preset range, a certain interval is formed between the pressure strip and the box body, which can reduce the possibility of generating a large torque on the pressure strip during the tightening or twisting process of the fastener.

[0016] In some embodiments, a gap is provided between the side of the pressure strip facing the box body and the box body, and the distance of the gap is 0.1 mm-0.5 mm.

[0017] By arranging a certain gap between the side of the pressure strip facing the box body and the box body, the possibility of generating a large torque on the pressure strip during the tightening or twisting process of the fastener can be reduced.

[0018] In some embodiments, the locking assembly also includes a pad, which is arranged on the side of the pressure strip facing the box body, and the pad is provided with a through hole coaxial with the through hole, and the mounting column passes through the through hole and the through hole and abuts against the box body.

[0019] By providing a pad, and providing the pad on the side facing the box body, it can not only play a role in isolating the direct physical contact between the pressure strip and the box body, but also play a role in raising the height.

[0020] In some embodiments, a groove is provided on a side of the pressure strip facing away from the box body, the plate body is disposed in the groove, and the through hole penetrates the bottom wall of the groove.

[0021] By arranging a groove on the side of the pressure strip away from the box body, a mounting space is provided for the plate body, which can reduce the space occupied by the battery device itself due to the arrangement of the rigid member.

[0022] In some embodiments, the plate body is bonded and fixed to the bottom wall of the groove.

[0023] By bonding and fixing the plate body to the bottom wall of the groove, the rigid part can be fixedly connected to the pressure strip, and the rigid part is not easy to fall off.

[0024] In some embodiments, a convex strip is provided on one side of the plate body facing the pressure strip, the convex strip and the mounting column form a mounting groove, an adhesive is accommodated in the mounting groove, and the convex strip abuts against the bottom wall of the groove.

[0025] By arranging a convex strip on the side of the plate body facing the pressure strip, and realizing parallel installation of the plate body by abutting the convex strip against the bottom wall of the groove, the parallelism of the plate body installation can be improved, and the adhesive is arranged in the installation groove formed by the convex strip and the installation column, which reduces the flow of the adhesive and further reduces the risk of uneven installation of the plate body.

[0026] In some embodiments, there are two convex strips, which are respectively located on both sides of the mounting post, and each convex strip extends from one side of the plate body to the other opposite side; or, the convex strip is annular and is arranged around the mounting post.

[0027] By setting two convex strips, which are respectively set on both sides of the mounting column, or setting the convex strip as an annular edge, it can not only cooperate with the mounting column to form a mounting groove for accommodating the adhesive, but also support the plate body from multiple positions to ensure that the plate body is set in parallel with the plane.

[0028] In some embodiments, the plate body and the convex strip are integrally formed; or, the convex strip is an elastic member.

[0029] By forming the plate body and the convex strips as one piece, the manufacturing process can be simplified and the reliability of the support can be improved; using the convex strips as elastic parts installed on the plate body makes bonding more convenient and improves the reliability of the connection between the plate body and the pressure strips.

[0030] In some embodiments, the fastener includes a smooth section located in the mounting hole and a threaded section threadedly fixed to the box body, and the inner wall of the mounting hole is a smooth surface.

[0031] By setting the inner wall of the mounting hole to a smooth surface, the threaded section of the fastener is only threadedly connected to the box body, and there is no threaded connection between the fastener and the mounting hole, that is, the rotation of the fastener will not drive the rigid part to rotate, reducing the risk of the pressure strip failing due to torque.

[0032] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art 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 the structures shown in these drawings without paying any creative work.

[0034] Figure 1 A schematic diagram of the structure of a vehicle according to some embodiments of the present application;

[0035] Figure 2 A schematic diagram of the exploded structure of a battery according to some embodiments of the present application;

[0036] Figure 3 A partial three-dimensional structural schematic diagram of a battery device according to some embodiments of the present application;

[0037] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A;

[0038] Figure 5 This is a schematic diagram of the structure of the pressure strip and the rigid member of the battery device in some embodiments of the present application;

[0039] Figure 6 for Figure 5 A schematic diagram of the enlarged structure at B;

[0040] Figure 7 This is a schematic diagram of the structure of the pressure strip, rigid member and spacer of the battery device in some embodiments of the present application;

[0041] Figure 8 for Figure 7 A schematic diagram of the enlarged structure at C;

[0042] Fig. 9 Schematic diagram of a partial structure of a battery device according to some embodiments of the present application.

[0043] Description of Figure Numbers:

[0044] 1000. Vehicles;

[0045] 100, battery device; 200, controller; 300, motor;

[0046] 10. Box body; 11. Box cover; 12. Box body;

[0047] 20. Battery cells;

[0048] 2. Accommodating cavity; 3. Pressure strip; 31. Through hole; 32. Recess; 321. Groove bottom wall; 4. Rigid member; 41. Mounting column; 42. Mounting hole; 43. Rigid sub-member; 431. Boss; 432. Mounting sub-hole; 433. Plate; 434. Raised strip; 435. Mounting groove; 5. Pad; 6. Fastener; 7. Adhesive member.

[0049] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in this embodiment to clearly and completely describe the technical solution in this embodiment. Obviously, the described embodiment is only a part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] It should be noted that all directional indications in this embodiment (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0052] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] In addition, the technical solutions between the various embodiments of the present application can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. 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 here are only used to explain this application and are not used to limit this application.

[0055] The descriptions of directions such as "up", "down", "front", "back", "left" and "right" in this application are based on the directions shown in the drawings and are only used to explain the relative positional relationship between the components in the postures shown in the drawings. If the specific posture changes, the directional indication will also change accordingly.

[0056] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0057] During the use of the battery device, there is a problem that the pressure strip that limits the expansion of the battery cell may become loose. Without the restraint of the pressure strip, the battery cell may expand beyond the limit under thermal runaway, posing a safety risk. After research, the applicant found that the two ends of the pressure strip are generally fixed to the box body by bolts, and the bolts are threadedly connected to the box body, and the loose part of the pressure strip is generally the location where it is connected to the bolts.

[0058] After further research, the applicant found that the current pressure strips are generally made of non-rigid composite materials, such as glass fiber + plastic composite materials. When the pressure strips are locked to the beams of the box body by bolts, this is a combination of rigid and non-rigid materials. The material structure of the pressure strip at the connection with the bolts will be irreversibly damaged, and during use, as the pressure strip material ages, or due to factors such as vibration and impact, the combination of the pressure strip and the bolt will weaken, the bolt torque will gradually decay, the pressure strip will loosen from the bolts, and will no longer be able to limit the expansion of the battery cell.

[0059] The applicant has considered using rigid materials, such as steel, to make the pressure strips. However, steel is a conductive material and there is a risk of short circuit under thermal runaway. After further research, the applicant found that a layer of steel gasket can be set on the pressure strip, which can provide some improvement. However, under working conditions such as vibration and impact, the bolt torque will still decay rapidly until failure, eventually causing the pressure strip to loosen.

[0060] To this end, the applicant provides a battery device, including a box body and a plurality of battery cells, wherein the box body includes a locking assembly, a box body and a box cover; the locking assembly includes a pressure strip, a rigid member and a fastener, wherein the pressure strip is arranged at the opening, at least one end of the pressure strip is provided with a through hole, and the pressure strip is an insulating member; the rigid member includes a mounting column passing through the through hole, and the mounting column is provided with a mounting hole passing through the mounting column; the fastener is passed through the mounting hole and connected to the box body. The battery device isolates the fastener from the pressure strip through the rigid member, which can reduce the risk of bolt torque attenuation when the fastener directly locks the pressure strip.

[0061] 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 electrical equipment may be a vehicle 1000, and 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 device 100 is provided inside the vehicle 1000, and the battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000, for example, the battery device 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 device 100 to power the motor 300, for example, for the working power demand of the vehicle 1000 during starting, navigation and driving.

[0062] In some embodiments of the present application, the battery device 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.

[0063] Please refer to Figure 2 , Figure 2The schematic diagram of the exploded structure of the battery device 100 provided in some embodiments of the present application. The battery device 100 includes a box body 10 and a battery cell 20, and the battery cell 20 is contained in the box body 10. Among them, the box body 10 is used to provide a storage space for the battery cell 20, and the box body 10 can adopt a variety of structures. In some embodiments, the box body 10 may include a box cover 11 and a box body 12, and the box cover 11 and the box body 12 cover each other, and the box cover 11 and the box body 12 jointly define a storage space for accommodating the battery cell 20. The box body 12 can be a hollow structure with one end open, and the box cover 11 can be a plate-like structure. The box cover 11 covers the open side of the box body 12, so that the box cover 11 and the box body 12 jointly define a storage space; the box cover 11 and the box body 12 can also be hollow structures with one side open, and the open side of the box cover 11 covers the open side of the box body 12. Of course, the box body 10 formed by the box cover 11 and the box body 12 can be in a variety of shapes, such as a cylinder, a cuboid, etc.

[0064] The battery device 100 mentioned in the embodiment of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells 20, and the plurality of battery cells 20 are connected in series, in parallel or in mixed connection through a busbar.

[0065] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells 20 .

[0066] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells 20 to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells 20 by a cable tie.

[0067] In some embodiments, the battery device 100 may be a battery pack, which includes a case 10 and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case 10 .

[0068] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box body 10 by fixing the battery module in the box body 10 .

[0069] As an example, the battery cell assembly may also be accommodated in the case 10 by directly fixing the plurality of battery cells 20 to the case 10 .

[0070] 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.

[0071] 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.

[0072] Reference Figure 3-Figure 7 According to some embodiments of the present application, the present application provides a battery device 100, including a box body 10 and a plurality of battery cells 20, the box body 10 includes a locking assembly, a box body 12 and a box cover 11; the box body 12 includes a accommodating chamber 2 and an opening connected to the accommodating chamber 2, the box cover 11 covers the opening, and the plurality of battery cells 20 are arranged in the accommodating chamber 2; the locking assembly includes a pressure strip 3, a rigid member 4 and a fastener 6, the pressure strip 3 is arranged at the opening, at least one end of the pressure strip 3 is provided with a through hole 31, and the pressure strip 3 is an insulating member; the rigid member 4 includes a mounting column 41 passing through the through hole 31, and the mounting column 41 is provided with a mounting hole 42 passing through the mounting column 41; the fastener 6 passes through the mounting hole 42 and is connected to the box body 12.

[0073] The bead 3 is an insulating member that can play an insulating role. The insulating member is generally made of non-rigid materials. The bead 3 here is not a traditional steel bead. However, the bead 3 made of non-rigid materials is easily damaged by extrusion, especially when it is easy to fail under the torque of the fastener 6. The two ends of the bead 3 are generally located on the opposite sides of the box 10, and the middle part of the bead 3 is located above the shoulder position of the battery cell 20, which is used to limit the expansion of the battery cell 20 under thermal runaway. The rigid member 4 is made of a material with a certain rigidity, which can be a metal member. At least one end of the bead 3 is provided with a through hole 31, which means that the through hole 31 can be provided only at one end of the bead 3, or at both ends of the bead 3. The rigid member 4 includes a mounting column 41, which is penetrated in the through hole 31, and the mounting column 41 is formed with a mounting hole 42 that penetrates the mounting column 41 itself, and the through hole 31 is arranged around the periphery of the mounting hole 42. In a specific embodiment, the mounting hole 42 and the through hole 31 are coaxially arranged. In this way, the fastener 6 is installed on the box body 12 through the installation hole 42 on the rigid member 4. The rigid member 4 plays an isolating role. The fastener 6 will not come into direct contact with the pressure strip 3 during the locking process, or will not generate torque on the pressure strip 3.

[0074] By setting the rigid part 4 including the mounting column 41, the mounting column 41 is penetrated by the through hole 31, and the mounting column 41 is formed with a mounting hole 42 for the fastener 6 to pass through, the rigid part 4 plays a role of isolating the fastener 6 and the pressure strip 3, and the fastener 6 is installed on the box body 12 through the mounting hole 42, which can reduce the risk of bolt torque attenuation when the fastener 6 directly locks the pressure strip 3, and thus can also reduce the risk of failure of the battery device 100.

[0075] In some embodiments, the pressure strip 3 is a non-metal composite material part, and the rigid part 4 is a metal part.

[0076] The pressure strip 3 can be made of a known non-metallic composite material, for example, a currently available glass fiber + plastic composite material can be used, which is a non-rigid material. When the pressure strip 3 is locked on the beam of the box body 10 by bolts, this is a combination of a rigid material and a non-rigid material. The material structure of the pressure strip 3 at the connection with the bolt will be irreversibly damaged, and during use, as the pressure strip 3 material ages, or because of factors such as vibration and impact, the combination of the pressure strip 3 and the bolt will weaken, the bolt torque will gradually decay, and the pressure strip 3 will loosen from the bolt and will no longer be able to limit the expansion of the battery cell 20. Therefore, a rigid part 4 can be set to be installed at the through hole 31, and the rigid part 4 is made of a metal material with a certain rigidity, such as steel, aluminum or copper. Non-metallic composite materials are generally not conductive, and compared with the use of conductive rigid materials, the risk of short circuit under thermal runaway can be reduced.

[0077] By making the pressure strip 3 from a non-metallic composite material, the risk of short circuit under thermal runaway can be reduced; the rigid part 4 is made of metal, which is easy to manufacture and has a low cost.

[0078] Reference Figure 5 and Figure 6 In some embodiments, the rigid component 4 includes two rigid sub-components 43, which are respectively located on opposite sides of the pressure strip 3, and the rigid sub-components 43 include a boss 431 passing through the through hole 31, and the bosses 431 of the two rigid sub-components 43 are relatively arranged to form a mounting column 41.

[0079] The rigid member 4 may include two rigid sub-members 43, which are respectively arranged on opposite sides of the pressure strip 3 to penetrate the through holes 31 of the pressure strip 3 from both sides. Specifically, the structures of the two rigid sub-members 43 may be the same or different, but both are provided with a boss 431 structure, the lengths of the bosses 431 may be the same or different, the bosses 431 are formed with mounting sub-holes 432 that penetrate the bosses 431 themselves, the bosses 431 of the two rigid sub-members 43 are relatively arranged to form the mounting column 41, and the two mounting sub-holes 432 are coaxially arranged to cooperate to form the mounting hole 42. Specifically, the two bosses 431 may be in contact and cooperate, or may be spaced a certain distance apart.

[0080] By providing two rigid sub-components 43, two bosses 431 of the two rigid sub-components 43 are respectively inserted into the through hole 31 from both ends of the through hole 31, and the two bosses 431 cooperate to form the mounting column 41, and the two bosses 431 each form a mounting sub-hole 432 penetrating through itself to cooperate to form the mounting hole 42. The structure of the cooperation of the two rigid sub-components 43 can not only form the mounting hole 42 for the fastener 6 to pass through, but also improve the flexibility of installation.

[0081] Reference Figure 5 and Figure 6 In some embodiments, the rigid sub-component 43 further includes a plate body 433 , the boss 431 is extended from the plate body 433 in the thickness direction, and the boss 431 is disposed on a side of the plate body 433 facing the through hole 31 .

[0082] The plate body 433 is also provided with a through hole, and the through hole is coaxially arranged with the mounting sub-hole 432 of the boss 431. The boss 431 is actually formed by extending from the thickness direction of the plate body 433 with the outer edge of the through hole as the outline. The plate body 433 can be a flat plate, which is used to fit with the pressure strip 3 and provide a mounting structure for the boss 431. Those skilled in the art can understand that the boss 431 is arranged on the side of the plate body 433 facing the through hole 31, and the two bosses 431 extend into the through hole 31 from both ends of the through hole 31.

[0083] By setting the plate body 433, a mounting position is provided for the boss 431. The plate body 433 is formed with a through hole coaxially arranged with the mounting sub-hole 432 to facilitate the passage of the fastener 6. The plate body 433 can also be arranged to fit the pressure strip 3 so that the rigid sub-component 43 and the pressure strip 3 are connected.

[0084] In some embodiments, the rigid member 4 may include only one component, specifically:

[0085] Reference Figure 7 and Figure 8 The rigid member 4 further includes a plate body 433 , and the mounting column 41 extends from the plate body 433 in a thickness direction. The mounting column 41 passes through the through hole 31 and abuts against the box body 12 .

[0086] The rigid member 4 of this embodiment can be a component. That is, the rigid member 4 includes a plate 433 and a boss 431. In this embodiment, the boss 431 is designed to be longer and can pass through the through hole 31 to abut against the box body 12. That is to say, the mounting column 41 is composed of only one boss 431. The plate 433 is arranged on the side of the pressure strip 3 away from the box body 12. At this time, the plate 433 is also provided with a through hole, and the through hole is coaxially arranged with the mounting hole 42 to facilitate the fastener 6 to pass through. The plate 433 and the boss 431 are both made of rigid materials. The mounting column 41 passes through the through hole 31 and abuts against the box body 12. The fastener 6 can extend from the side of the pressure strip 3 provided with the plate 433 into the mounting hole 42 and connect with the box body 12. The locking surface of the fastener 6 is on the plate 433, which avoids direct contact between the pressure strip 3 and the fastener 6, and also reduces the risk of the fastener 6 knob causing torque failure on the pressure strip 3.

[0087] By setting up a rigid part 4 including a plate body 433 and a mounting column 41, the mounting column 41 can pass through the through hole 31 and abut against the box body 12. The rigid part 4 can avoid direct contact between the pressure strip 3 and the fastener 6, thereby reducing the risk of torque failure, saving the number of parts and components, and reducing the complexity of installation.

[0088] Reference Figure 8 In some embodiments, the locking assembly further includes a pad 5, which is disposed on the side of the pressure strip 3 facing the box body 12, and the pad 5 is provided with a through hole coaxial with the through hole 31, and the mounting column 41 passes through the through hole 31 and the through hole and abuts against the box body 12.

[0089] The pad 5 can be a flat plate, which is arranged on both sides of the pressure strip 3 together with the plate body 433. In order to allow the fastener 6 to pass through, the pad 5 is also provided with a through hole coaxially arranged with the through hole 31, and the mounting column 41 passes through the through hole 31 and the through hole in turn to abut against the box body 12. The pad 5 here can play at least two roles: 1. It can achieve physical isolation between the pressure strip 3 and the box body 12, reducing the risk of a large torque on the pressure strip 3 during the tightening process of the fastener 6; 2. It can play a role of padding. When the height of the box body 12 is small, a pad 5 with a larger thickness can be selected for padding.

[0090] By providing the pad 5 and arranging the pad 5 on the side facing the box body 12, it can not only play a role in isolating the direct physical contact between the pressure strip 3 and the box body 12, but also play a role in raising the height.

[0091] Reference Figure 6 In some embodiments, a groove 32 is provided on the side of the pressure strip 3 facing away from the box body 12 , the plate body 433 is disposed in the groove 32 , and the through hole 31 passes through the bottom wall 321 of the groove 32 .

[0092] This embodiment is applicable to the case where the rigid member 4 includes two rigid sub-members 43 and the case where the rigid member 4 only includes one plate 433 and a mounting post 41. The groove 32 is a recessed groove formed by the pressure strip 3 on one side facing the box body 12, and the recessed groove is used to accommodate the plate 433. At the same time, the through hole 31 is set through the groove bottom wall 321 of the groove 32, so that the plate 433 is installed in the groove 32, and the boss 431 or the mounting post 41 can pass through the through hole 31. The setting of the groove 32 is mainly to provide a accommodating space for the plate 433.

[0093] By providing a groove 32 on the side of the pressure strip 3 away from the box body 12 to provide installation space for the plate 433 , the space occupied by the rigid member 4 in the battery device 100 itself can be reduced.

[0094] In some embodiments, the plate body 433 is bonded and fixed to the groove bottom wall 321 .

[0095] The plate body 433 is generally made of a rigid material, while the groove bottom wall 321 is a part of the pressure strip 3 and is a non-rigid material. It is more convenient to fix the two by bonding. Specifically, the groove bottom wall 321 can be a plane, and the bonding surface of the groove bottom wall 321 of the plate body 433 can also be a plane, which can increase the bonding area.

[0096] By bonding and fixing the plate body 433 to the groove bottom wall 321 , the rigid component 4 can be fixedly connected to the pressure strip 3 , and the rigid component 4 is not easy to fall off.

[0097] Reference Figure 6In some embodiments, a convex strip 434 is provided on the side of the plate body 433 facing the pressure strip 3 , and the convex strip 434 and the mounting column 41 form a mounting groove 435 , and the mounting groove 435 accommodates the adhesive 7 , and the convex strip 434 abuts against the bottom wall 321 of the groove 32 .

[0098] The adhesive 7 may be a glue layer, which is generally formed of a glue material. The glue material may be a solid glue or a liquid glue. Whether it is a solid glue or a liquid glue, there may be uneven coating during the coating process, that is, the thickness of the glue layer is inconsistent. Moreover, even if the thickness during coating can be controlled to be consistent through process control, since the glue layer is flexible, the flow of the glue layer during the installation of the rigid part 4 or during use may also cause inconsistent thickness. If the thickness of the glue layer is inconsistent, the plane of the plate body 433 may be uneven after the plate body 433 is installed in the groove 32, or the plane of the plate body 433 may be tilted, which is not conducive to locking the fastener 6 on the plate body 433. Even if the fastener 6 can be locked, there may be a risk of loose locking. The convex strip 434 refers to a structure protruding from the plate body 433. The convex strip 434 and the mounting column 41 are arranged on the same side of the plate body 433. The two cooperate to form a mounting groove 435. The adhesive 7 is arranged in the space enclosed by the mounting groove 435. At the same time, the convex strip 434 abuts against the bottom wall 321 of the groove 32. The parallelism of the installation of the plate body 433 is ensured by the abutment between the convex strip 434 and the bottom wall 321, and it does not rely on the consistent thickness of the adhesive 7 to ensure it.

[0099] By providing a convex strip 434 on the side of the plate body 433 facing the pressure strip 3, the parallel installation of the plate body 433 is achieved by the convex strip 434 abutting against the groove bottom wall 321 of the groove 32, thereby improving the parallelism of the installation of the plate body 433, and providing the adhesive 7 in the installation groove 435 formed by the convex strip 434 and the installation column 41, thereby reducing the flow of the adhesive 7 and further reducing the risk of uneven installation of the plate body 433.

[0100] Reference Figure 6 In some embodiments, there are two ridges 434 , which are respectively located on both sides of the mounting post 41 , and each ridge 434 extends from one side of the plate body 433 to the other opposite side; or, the ridge 434 is annular and arranged around the mounting post 41 .

[0101] The present application does not make any specific restrictions on the specific number of the convex strips 434, as long as they can cooperate with the mounting column 41 to form a mounting groove 435 for placing the adhesive 7. In some specific embodiments, the number of the convex strips 434 can be set to two, and the two convex strips 434 are respectively arranged on both sides of the mounting column 41 to support the plate body 433 from both sides, and the two convex strips 434 extend from one side of the plate body 433 to the other opposite side, respectively, and can cooperate with the mounting column 41 to form a mounting groove 435 for accommodating the adhesive 7. In other specific embodiments, the convex strip 434 can be an annular ridge arranged around the mounting column 41, and the annular ridge and the mounting column 41 form a mounting groove 435 to accommodate the adhesive 7, and the annular ridge abuts against the groove bottom wall 321 to support the plate body 433. Of course, in the above embodiments, the height of the convex strips 434 is consistent.

[0102] By setting two convex strips 434, the two convex strips 434 are respectively set on both sides of the mounting column 41, or the convex strip 434 is set as an annular edge, it can not only cooperate with the mounting column 41 to form a mounting groove 435 for accommodating the adhesive 7, but also support the plate body 433 from multiple positions to ensure that the plate body 433 is set in parallel with the plane.

[0103] In some embodiments, the plate body 433 and the convex strip 434 are integrally formed; or, the convex strip 434 is an elastic member.

[0104] Regarding the manufacturing method and material of the convex strip 434. At least the following two specific embodiments are included: In a specific embodiment, the convex strip 434 can be integrally formed with the plate body 433 by stamping, and the convex strip 434 and the plate body 433 use the same rigid part 4, such as a steel part. The one-piece molding method is simple to manufacture, and the plate body 433 is supported by the rigid part 4, and the reliability is also high. Of course, in another specific embodiment, the convex strip 434 can also be made of an elastic part or a flexible part, such as rubber or silicone, and fixed to the plate body 433 by bonding or clamping. The use of an elastic part or a flexible part makes it easier to produce a tight bonding effect with the adhesive 7, thereby improving the reliability of the connection between the plate body 433 and the pressure strip 3.

[0105] By forming the plate body 433 and the convex strip 434 as an integral part, the manufacturing process can be simplified and the reliability of the support can be improved; using the convex strip 434 as an elastic member installed on the plate body 433 is more convenient for bonding and improves the reliability of the connection between the plate body 433 and the pressure strip 3.

[0106] Reference Fig. 9 In some embodiments, the length of the mounting post 41 extending out of the through hole 31 is 0.1 mm-0.5 mm.

[0107] The through hole 31 is provided on the pressure strip 3. The length of the mounting post 41 extending out of the through hole 31 in this embodiment is actually the length of the mounting post 41 extending out of the pressure strip 3 facing the box body 12. Fig. 9 As shown in H. Those skilled in the art will appreciate that if the bead 3 is in direct contact with the box body 12, the bead 3 may also be subjected to a large torque during the torsion of the fastener 6. Therefore, it is necessary to set a certain interval between the bead 3 and the box body 12. Of course, this interval cannot be designed to be too large, otherwise the installation will not be stable enough. According to actual verification by those skilled in the art, it is more appropriate to control this interval between 0.1mm-0.5mm, which can be 0.1mm, 0.2mm, 0.3mm, 0.4mm or 0.5mm, or any value of 0.1mm-0.5mm.

[0108] By setting the length of the mounting column 41 extending out of the through hole 31 to a preset range, a certain interval is formed between the pressure strip 3 and the box body 12, which can reduce the possibility of generating a large torque on the pressure strip 3 during the tightening or twisting process of the fastener 6.

[0109] Reference Fig. 9 In some embodiments, a gap is provided between the side of the pressure strip 3 facing the box body 12 and the box body 12, and the distance of the gap is 0.1mm-0.5mm.

[0110] This embodiment more directly defines the distance between the box body 12 and the pressure strip 3, as shown in FIG. Fig. 9 Similarly, this interval cannot be designed to be too large, otherwise the installation will not be stable enough. According to actual verification by those skilled in the art, it is more appropriate to control this interval between 0.1mm and 0.5mm, which can be 0.1mm, 0.2mm, 0.3mm, 0.4mm or 0.5mm, or any value between 0.1mm and 0.5mm.

[0111] By providing a certain gap between the side of the pressure strip 3 facing the box body 12 and the box body 12, the possibility of generating a large torque on the pressure strip 3 during the tightening or twisting process of the fastener 6 can be reduced.

[0112] In some embodiments, the fastener 6 includes a smooth section located in the mounting hole 42 and a threaded section threadedly fixed to the box body 12 , and the inner wall of the mounting hole 42 is a smooth surface.

[0113] The fastener 6 can be a threaded part, such as a screw with threads, and the threaded section of the screw is used for threaded connection with the box body 12. Specifically, the box body 12 can be provided with a threaded hole threadedly connected to the threaded section, and the inner wall surface of the mounting hole 42 is a smooth surface, and the part of the fastener 6 in the mounting hole 42 is a smooth section without threads, that is, the mounting hole 42 is only for the fastener 6 and the fastener 6 can rotate freely in the mounting hole 42 without a threaded connection relationship. In this way, when the fastener 6 is rotated and tightened on the box body 12, it will not drive the mounting column 41 to rotate, and will not transmit the torque to the pressure strip 3 through the rigid part 4, thereby reducing the risk of the pressure strip 3 being damaged by the torque.

[0114] By setting the inner wall of the mounting hole 42 to a smooth surface, the threaded section of the fastener 6 is only threadedly connected to the box body 12, and there is no threaded connection between the fastener 6 and the mounting hole 42, that is, the rotation of the fastener 6 will not drive the rigid part 4 to rotate, reducing the risk of the pressure strip 3 being subjected to torque and failing.

[0115] According to some embodiments of the present application, the present application provides a device, including a box body 10 and a plurality of battery cells 20, the box body 10 includes a locking assembly, a box body 12 and a box cover 11; the box body 12 includes a accommodating cavity 2 and an opening connected to the accommodating cavity 2, the box cover 11 covers the opening, and a plurality of battery cells 20 are arranged in the accommodating cavity 2; the locking assembly includes a pressure strip 3, a rigid member 4 and a fastener 6, the pressure strip 3 is arranged at the opening, at least one end of the pressure strip 3 is provided with a through hole 31, and the pressure strip 3 is an insulating member; the rigid member 4 includes a mounting column 41 passing through the through hole 31, and the mounting column 41 is provided with a mounting hole 42 passing through the mounting column 41; the fastener 6 passes through the mounting hole 42 and is connected to the box body 12. The rigid member 4 may include the following two embodiments. In the first embodiment, the rigid member 4 includes two rigid sub-members 43, the two rigid sub-members 43 are respectively located on opposite sides of the pressure strip 3, and the rigid sub-member 43 includes a plate body 433 and a boss 431 extending from the plate body 433 in the thickness direction, and the boss 431 is arranged on the side of the plate body 433 facing the through hole 31, and the boss 431 is penetrated through the through hole 31, and the bosses 431 of the two rigid sub-members 43 are arranged oppositely to form a mounting column 41. In the second embodiment, the rigid member 4 may include only one component, specifically, the rigid member 4 also includes a plate body 433, the mounting column 41 extends from the plate body 433 in the thickness direction, the mounting column 41 passes through the through hole 31 and abuts against the box body 12, and the length of the mounting column 41 extending from the through hole 31 is 0.1mm-0.5mm; and / or, the length of the mounting column 41 extending from the through hole 31 is 0.1mm-0.5mm. The locking assembly further includes a backing plate 5, which is disposed on the side of the pressure strip 3 facing the box body 12, and is provided with a through hole coaxial with the through hole 31, and the mounting column 41 passes through the through hole 31 and the through hole and abuts against the box body 12. The rigid member 4 is a metal member, and the pressure strip 3 is a non-metal composite material member, which is made of a non-metal composite material.

[0116] In either the first or second embodiment, a groove 32 is provided on the side of the pressure strip 3 facing away from the box body 12, the plate body 433 is provided in the groove 32, and the through hole 31 penetrates the groove bottom wall 321 of the groove 32. The plate body 433 is bonded and fixed to the groove bottom wall 321, and a convex strip 434 is provided on the side of the plate body 433 facing the pressure strip 3, a mounting groove 435 is formed between the convex strip 434 and the mounting column 41, an adhesive member 7 is accommodated in the mounting groove 435, and the convex strip 434 abuts against the groove bottom wall 321 of the groove 32. There can be two convex strips 434, which are respectively located on both sides of the mounting column 41, and each convex strip 434 extends from one side of the plate body 433 to the other opposite side; or, the convex strip 434 is annular and is arranged around the mounting column 41. The plate body 433 and the convex strip 434 are integrally formed; or, the convex strip 434 is an elastic member. The fastener 6 includes a smooth section located in the mounting hole 42 and a threaded section screwed and fixed to the box body 12, and the inner wall of the mounting hole 42 is a smooth surface. In this embodiment, the rigid member 4 includes a mounting column 41, which is penetrated through the through hole 31, and the mounting column 41 is formed with a mounting hole 42 for the fastener 6 to pass through. The rigid member 4 plays a role in isolating the fastener 6 and the pressure strip 3. The fastener 6 is installed on the box body 12 through the mounting hole 42, which can reduce the risk of bolt torque attenuation caused by the fastener 6 directly locking the pressure strip 3, resulting in failure of the battery device 100. In addition, by providing the convex strip 434, the parallelism of the side of the plate 433 locking the fastener 6 can be ensured, the firmness of the connection of the fastener 6 can be ensured, and at the same time, the damage to the pressure strip 3 caused by the fastener 6 during the locking process can be reduced.

[0117] According to some embodiments of the present application, the present application provides an electric device, which includes an equipment body and the above-mentioned battery device 100, and the battery device 100 is arranged in the equipment body. The above-mentioned electric device can be a vehicle 1000. Since the electric device includes any technical solution of all the above-mentioned embodiments, it has at least all the beneficial effects brought by any of the above-mentioned technical solutions, which will not be repeated here one by one.

[0118] The above description is only an optional embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the application concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A battery device, characterized in that: It comprises a box body and a plurality of battery cells, wherein the box body comprises a locking assembly, a box body and a box cover; The box body comprises a receiving cavity and an opening communicating with the receiving cavity, the box cover covers the opening, and the plurality of battery cells are arranged in the receiving cavity; The locking assembly comprises: A pressure strip, the pressure strip is arranged at the opening, at least one end of the pressure strip is provided with a through hole, and the pressure strip is an insulating member; A rigid member, the rigid member comprising a mounting post penetrating the through hole, the mounting post being provided with a mounting hole penetrating the mounting post; and A fastener is passed through the mounting hole and connected to the box body.

2. The battery device according to claim 1, characterized in that The rigid component includes two rigid subcomponents, which are respectively located on two opposite sides of the pressure strip, and the rigid subcomponent includes a boss penetrating the through hole, and the bosses of the two rigid subcomponents are arranged opposite to each other to form the mounting column.

3. The battery device according to claim 2, characterized in that: The rigid sub-component further includes a plate body, the boss is extended from the plate body in the thickness direction, and the boss is arranged on a side of the plate body facing the through hole.

4. The battery device according to claim 1, characterized in that: The rigid member further includes a plate body, the mounting post extends from the plate body in a thickness direction, and the mounting post passes through the through hole and abuts against the box body.

5. The battery device according to claim 4, characterized in that: The length of the mounting post extending out of the through hole is 0.1 mm-0.5 mm.

6. The battery device according to claim 4, characterized in that: A gap is arranged between the side of the pressure strip facing the box body and the box body, and the distance of the gap is 0.1mm-0.5mm.

7. The battery device according to claim 4, characterized in that: The locking assembly also includes a backing plate, which is arranged on a side of the pressure strip facing the box body, and the backing plate is provided with a through hole coaxial with the through hole, and the mounting column passes through the through hole and the through hole and abuts against the box body.

8. The battery device according to any one of claims 3 to 7, characterized in that: A groove is arranged on a side of the pressure strip away from the box body, the plate body is arranged in the groove, and the through hole penetrates through the bottom wall of the groove.

9. The battery device according to claim 8, characterized in that: The plate body is bonded and fixed to the bottom wall of the groove.

10. The battery device according to claim 9, characterized in that A convex strip is provided on one side of the plate body facing the pressure strip, a mounting groove is formed between the convex strip and the mounting column, an adhesive is accommodated in the mounting groove, and the convex strip abuts against the bottom wall of the groove.

11. The battery device according to claim 10, characterized in that: There are two convex strips, which are respectively located on both sides of the mounting post, and each convex strip extends from one side of the plate body to the other opposite side; or, the convex strip is annular and is arranged around the mounting post.

12. The battery device according to claim 10, characterized in that: The plate body and the convex strip are integrally formed; or, the convex strip is an elastic member.

13. The battery device according to any one of claims 1 to 7, characterized in that: The pressure strip is a non-metal composite material part, and the rigid part is a metal part.

14. The battery device according to any one of claims 1 to 7, characterized in that: The fastener comprises a smooth section located in the mounting hole and a threaded section threadedly fixed to the box body, and the inner wall of the mounting hole is a smooth surface.

15. An electrical equipment, characterized in that: The electrical equipment comprises an equipment body and the battery device according to any one of claims 1 to 14, wherein the battery device is arranged in the equipment body.

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