Battery device and electric device

Abstract

The utility model discloses a battery device and a power utilization device. The battery device comprises a battery monomer, an integrated busbar assembly, a pressing strip and a cover plate, and the integrated busbar assembly is connected with each battery monomer. The integrated busbar assembly is provided with a through groove, and the pressing strip is connected with the plurality of single batteries through the through groove. The cover plate is arranged on one side of the integrated busbar assembly back to the battery monomers, and the cover plate and the battery monomers clamp the pressing strips. According to the invention, the pressing strips are arranged and can fix the single batteries, so that the problem of shaking of the single batteries can be reduced. In addition, the battery device is further provided with a cover plate, the cover plate is connected to the integrated busbar assembly, the cover plate extrudes the pressing strips towards the direction of the single batteries, the cover plate can play a role in fixing the pressing strips, the risk that the pressing strips fall off is reduced, the impact and collision resistance of the battery device can be improved, the dominant frequency of the battery device can be improved, and the problem that the battery device is damaged can be reduced.

Description

Technical Field

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

[0002] The battery device includes a box and a plurality of battery cells arranged in the box. The related art provides a battery device. In the related art, there is a risk of shaking of the battery cells in the battery device. The battery cells may also crack due to the shaking, causing damage to the battery device. Utility Model Content

[0003] In view of the above problems, the present application provides a battery device and an electrical device, which can reduce the risk of battery cell shaking, improve the fixing strength of the battery cell, and reduce the problem of damage to the battery device.

[0004] In order to solve the above technical problems, a technical solution adopted by the present application is to provide a battery device, which includes a battery cell, an integrated busbar assembly, a pressure strip and a cover plate. The integrated busbar assembly is connected to each of the battery cells. The integrated busbar assembly has a through groove, and the pressure strip is connected to a plurality of the battery cells through the through groove. The cover plate is arranged on the side of the integrated busbar assembly facing away from the battery cell, and the cover plate and the battery cell clamp the pressure strip.

[0005] The battery device of the above structure is provided with a pressure strip, which can fix the battery cell, thereby reducing the problem of battery cell shaking. In addition, the battery device is also provided with a cover plate, which is connected to the integrated busbar assembly. The cover plate squeezes the pressure strip toward the battery cell, and the cover plate can play a role in fixing the pressure strip, reducing the risk of the pressure strip falling off, improving the battery device's anti-impact and collision performance, increasing the main frequency of the battery device, and reducing the problem of damage to the battery device.

[0006] In a possible implementation manner, the battery device further includes: an adhesive member, and the integrated busbar assembly and the cover plate are connected via the adhesive member.

[0007] As described above, the cover plate and the integrated busbar assembly are fixed by an adhesive member, which has high fixing efficiency and good insulation, and can reduce the possibility of short circuit.

[0008] In a possible implementation manner, the adhesive member is adhesive glue.

[0009] As mentioned above, the adhesive has elasticity and can improve the expansion performance of the battery device.

[0010] In a possible implementation, the integrated busbar assembly includes an isolation plate and a plurality of busbar components, the isolation plate has a plurality of receiving grooves and the through grooves, each of the busbar components is disposed in each of the receiving grooves, and each of the busbar components is connected to each of the battery cells.

[0011] As described above, the battery devices are connected in series or in parallel through the busbar components to form a battery module, and the isolation plate plays a role of separation and insulation to reduce the risk of short circuit.

[0012] In a possible implementation manner, the collecting component and the cover plate are connected via the adhesive member.

[0013] As described above, the cover plate and the current collecting component are connected together, so that the pressure strip can be clamped on the battery cell.

[0014] In a possible implementation manner, the thickness of the adhesive member ranges from 0.5 mm to 3 mm.

[0015] The thickness of the adhesive can provide reliable fixing strength, and after the adhesive is applied, the adhesive cures quickly without affecting the fixing accuracy.

[0016] In a possible implementation manner, the thickness of the adhesive member ranges from 0.5 mm to 1.5 mm.

[0017] The above is a more optimal range of the thickness of the adhesive member, which can further improve the fixing effect of the adhesive member.

[0018] In a possible implementation, the isolation plate and the cover plate are connected via the adhesive component, and the pressure strip and the cover plate are connected via the adhesive component.

[0019] As mentioned above, the cover plate is also connected with the isolation plate and the pressure strip, which can improve the fixing strength of the cover plate.

[0020] In a possible implementation, the cover plate is formed with a smoke exhaust channel, and the smoke exhaust channel is used to exhaust high-temperature smoke when the battery device thermally runs away.

[0021] As described above, the smoke exhaust channel can provide high-temperature smoke for exhaust when the battery device is in thermal runaway, thereby reducing the possibility of safety accidents caused by thermal runaway.

[0022] In a possible implementation manner, the smoke exhaust channel includes a plurality of exhaust holes, and each of the exhaust holes is arranged in one-to-one correspondence with each of the battery cells.

[0023] As described above, an exhaust hole is provided corresponding to each battery cell, so that high-temperature smoke can be quickly discharged when thermal runaway occurs in the battery cell.

[0024] In a possible embodiment, the cover plate includes a main body and an exhaust portion, the exhaust portion is protruded on a side of the main body facing the pressure strip, and the exhaust portion has the exhaust hole; the smoke exhaust channel also includes an exhaust duct, the exhaust duct is provided in the exhaust portion, the exhaust duct is connected to each of the exhaust holes, the conducting direction of the exhaust duct is perpendicular to the conducting direction of the exhaust hole, and the exhaust duct includes a port located on the side of the cover plate.

[0025] As described above, the high-temperature flue gas entering the exhaust hole can be discharged from the cover plate through the exhaust duct.

[0026] In a possible implementation, the cover plate is a fiber composite material part.

[0027] Fiber composite materials are insulated and resistant to high temperatures, and can provide insulation protection and prevent thermal runaway and ignition problems.

[0028] In a possible implementation manner, reinforcing ribs are provided on the cover plate.

[0029] Providing reinforcing ribs can improve the strength of the cover plate.

[0030] In a possible implementation, the battery device further includes: a box body having a receiving cavity; the battery cell, the integrated busbar assembly, the pressure strip and the cover plate are located in the receiving cavity, and both ends of the pressure strip are connected to the box body.

[0031] The box body plays a protective role and provides an insulating and sealed environment.

[0032] In a possible embodiment, the battery device includes: a plurality of battery modules, each of the battery modules includes a plurality of battery cells arranged along a first direction, each of the battery modules is arranged along a second direction, and the first direction is perpendicular to the second direction; wherein the cover plate covers each of the battery modules.

[0033] As mentioned above, the cover plate can fix the pressure strips on each battery module.

[0034] In order to solve the above technical problem, another technical solution adopted by the present application is to provide an electrical device, which includes a battery device, and the battery device is the above-mentioned battery device, and the battery device is used to provide electrical energy.

[0035] The above-mentioned electrical device is provided with a pressure strip, which can fix the battery cell, thereby reducing the problem of battery cell shaking. In addition, the battery device is also provided with a cover plate, which is connected to the integrated busbar assembly. The cover plate squeezes the pressure strip toward the battery cell, and the cover plate can play a role in fixing the pressure strip, reducing the risk of the pressure strip falling off, and reducing the problem of damage to the battery device.

[0036] 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

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 is a schematic structural diagram of a vehicle according to one or more embodiments;

[0039] Figure 2 is a partial structural schematic diagram of a battery device according to some embodiments;

[0040] Figure 3 for Figure 2 Schematic diagram of the structural explosion of the battery device;

[0041] Figure 4 for Figure 2 A schematic diagram of the top view of the battery device;

[0042] Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure of the battery device along section Aa;

[0043] Figure 6 for Figure 5 A schematic diagram of the structure enlarged at C in the middle;

[0044] Figure 7 for Figure 2 A schematic diagram of the top view of the cover plate in the battery device;

[0045] Figure 8 For bonding parts Figure 7 Schematic diagram of the distribution structure on the cover plate;

[0046] Fig. 9 for Figure 7 Schematic diagram of the cross-sectional structure of the cover plate along section Bb;

[0047] Fig.10 Schematic diagrams of cross-sectional structures of cover plates in some other embodiments;

[0048] Fig.11 It is a schematic diagram of the structure of a box according to some embodiments.

[0049] Among them, 1000, vehicle; 200, controller; 300, motor; 100, battery device; 10, battery cell; 15, explosion-proof valve; 20, cover plate; 201, main body; 202, exhaust part; 30, pressure strip; 40, adhesive; 51, isolation plate; 52, busbar component; 50, integrated busbar assembly; 21, exhaust hole; 22, exhaust duct; 23, upper cover; 60, box body; x, first direction; y, second direction. DETAILED DESCRIPTION

[0050] The following is a detailed description of the embodiments of the technical solution of the present application. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0052] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, unless otherwise clearly and specifically defined, the term "multiple" refers to more than two (including two), similarly, "multiple groups" refers to more than two (including two), and "multiple pieces" refers to more than two (including two).

[0053] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0054] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0055] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0056] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0057] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. 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 battery application fields, its market demand is also constantly expanding.

[0058] Among them, the battery device includes a box body and a plurality of battery cells arranged in the box body. The related technology provides a battery device. In the related technology, the battery cells in the battery device are at risk of shaking. The battery cells may also crack due to shaking, causing damage to the battery device.

[0059] Based on the above considerations, in order to solve the technical problem of battery cell shaking in the prior art, the present application proposes a battery device and an electrical device, wherein the battery device is provided with a pressure strip and a cover plate, and the battery cell is fixed by the pressure strip, and the cover plate and the battery cell clamp the pressure strip, which can reduce the risk of battery cell shaking, and the pressure strip is not easy to loosen and fall off.

[0060] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

[0061] Please refer to Figure 1 , Figure 1 is a schematic diagram of the structure of a vehicle according to one or more embodiments.

[0062] 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 starting, navigating and driving the vehicle 1000.

[0063] 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.

[0064] In order to improve the performance of the electrical device, the present application provides a battery device, please refer to Figure 2 and Figure 3 ; Figure 2 is a partial structural schematic diagram of a battery device according to some embodiments; Figure 3 for Figure 2 Schematic diagram of the battery device structure explosion.

[0065] In some embodiments, the battery device 100 includes a plurality of battery cells 10, an integrated busbar assembly 50, a pressure strip 30, and a cover plate 20. The integrated busbar assembly 50 is connected to each battery cell 10. The integrated busbar assembly 50 has a through slot, and the pressure strip 30 is connected to the plurality of battery cells 10 through the through slot. The cover plate 20 is disposed on a side of the integrated busbar assembly 50 that faces away from the battery cell 10, and the cover plate 20 and the battery cell 10 clamp the pressure strip 30.

[0066] Among them, multiple battery cells 10 are connected in series or in parallel through an integrated busbar assembly 50 to form one or more battery modules. The integrated busbar assembly 50 is also used to collect parameter information of the battery cell 10, and the parameter information includes, for example, temperature information, current information, voltage information, etc. of the battery cell 10, so as to maintain the stable operation of the battery device 100 based on the parameter information. The pressure strip 30 is arranged on one side of the multiple battery cells 10. By squeezing the battery cell 10 by the pressure strip 30, the problem of shaking or displacement of the battery cell 10 can be reduced. Among them, the cover plate 20 is used to increase the structural strength of the battery module. The cover plate 20 is connected to each integrated busbar assembly 50, which can make the battery modules better in integrity. In addition, the cover plate 20 is arranged on the side of the integrated busbar assembly 50 facing away from the battery cell 10, and the pressure strip 30 can be clamped on the battery cell 10, so that the cover plate 20 can also play a role in fixing the pressure strip 30, which can reduce the problem of the pressure strip 30 falling off.

[0067] Through the above structure, the battery device 100 is provided with a pressure strip 30, which can fix the battery cell 10, thereby reducing the problem of shaking of the battery cell 10. In addition, the battery device 100 is also provided with a cover plate 20, which is connected to the integrated busbar assembly 50. The cover plate 20 squeezes the pressure strip 30 toward the battery cell 10. The cover plate 20 can play a role in fixing the pressure strip 30, reducing the risk of the pressure strip 30 falling off, improving the impact and collision resistance of the battery device 100, and increasing the main frequency of the battery device 100, which can reduce the problem of damage to the battery device 100.

[0068] Please refer to Figure 5 and Figure 6 , Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure of the battery device along section Aa, Figure 6 for Figure 5 The structure at C is enlarged schematic diagram. In some embodiments, the battery device 100 further includes an adhesive member 40 , and the integrated busbar assembly 50 is connected to the cover plate 20 via the adhesive member 40 .

[0069] In this embodiment, the adhesive 40 is a resin adhesive. In some other embodiments, the adhesive 40 may also be a rubber adhesive, an inorganic adhesive, etc. Before fixing the cover plate 20, the adhesive 40 is first applied to the integrated busbar assembly 50, and then the cover plate 20 is placed in the corresponding position, and then a certain pressure is applied to make the cover plate 20 and the integrated busbar assembly 50 firmly bonded, and then the pressure is removed, and the adhesive 40 is cured to complete the fixing of the pressure strip 30.

[0070] As described above, the cover plate 20 is fixed by the adhesive member 40 , which has high fixing efficiency and good insulation, and can reduce the possibility of short circuit.

[0071] In some embodiments, the adhesive member 40 is an adhesive. The adhesive has a certain elasticity and can buffer the expansion of the battery cell 10 , thereby improving the expansion performance of the battery device 100 .

[0072] In some embodiments, the integrated busbar assembly 50 includes an isolation plate 51 and a plurality of busbar components 52 . The isolation plate 51 has a plurality of receiving grooves (not shown) and the through grooves (not shown). Each busbar component 52 is disposed in each receiving groove, and each busbar component 52 is connected to each battery cell 10 .

[0073] In this embodiment, the busbar component 52 is an aluminum bar, which is in the form of a sheet. In some other embodiments, the busbar component 52 can also be a copper bar, and the shape of the busbar component 52 can also be a reasonable shape such as a block or a rod. Among them, the busbar component 52 is connected to the battery cell 10, so that the battery cell 10 is connected in series or in parallel to form a battery module. In this embodiment, the busbar component 52 is welded to the positive pole (not shown) or the negative pole (not shown) of the battery cell 10. In addition, in some embodiments, the integrated busbar assembly 50 also includes a collection harness (not shown), and the collection harness is connected to each busbar component 52. The integrated busbar assembly 50 specifically collects parameter information of each battery cell 10 through the collection harness. Among them, the isolation plate 51 is used to isolate each busbar component 52 from the collection harness to reduce the risk of short circuit. In some embodiments, the isolation plate 51 also has a harness receiving groove, which is used to accommodate the collection harness. In addition, the through groove is specifically provided on the isolation plate 51 of the integrated busbar assembly 50, and the pressure strip 30 is connected to the battery cell 10 through the through groove on the isolation plate 51. In other embodiments, an adhesive 40 is provided in the through groove, and the pressure strip 30 is connected to the battery cell 10 through the adhesive 40. In this embodiment, the confluence component 52 is located in the receiving groove of the isolation plate 51, and the confluence component 52 is also fixed to the isolation plate 51 by rivets. In other embodiments, the confluence component 52 can also be fixed to the isolation plate 51 by other connection methods such as bonding and hot melting.

[0074] In some embodiments, the busbar component 52 is connected to the cover plate 20 via an adhesive 40 .

[0075] In this embodiment, the adhesive 40 is located on the current collecting part 52 of the integrated busbar assembly 50, and the cover plate 20 is specifically connected to the current collecting part 52 of the integrated busbar assembly 50. In some other embodiments, in addition to providing the adhesive 40 on the current collecting part 52 of the integrated busbar assembly 50, the adhesive 40 can also be provided on the isolation plate 51 of the integrated busbar assembly 50, so that the cover plate 20 is connected to the current collecting part 52 and the isolation plate 51 at the same time. In some other embodiments, the adhesive 40 can also be provided on the current collecting part 52, the isolation plate 51 and the pressure strip 30, so that the cover plate 20 is connected to the current collecting part 52, the isolation plate 51 and the pressure strip 30 at the same time, which can improve the fixing strength of the cover plate 20.

[0076] As described above, the cover plate 20 can clamp the bead 30 on the battery cell 10 through the adhesive member 40 .

[0077] In some embodiments, the thickness of the adhesive member 40 ranges from 0.5 mm to 3 mm.

[0078] In this embodiment, the thickness of the adhesive member 40 is 1 mm. In some other embodiments, the adhesive member 40 can also be 0.5 mm, 0.8 mm, 1.3 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, or other thicknesses.

[0079] The thickness of the adhesive member 40 can provide reliable fixing strength, and after the adhesive member 40 is applied, the adhesive member 40 cures quickly without affecting the fixing accuracy.

[0080] In some embodiments, the thickness of the adhesive 40 ranges from 0.5 mm to 1.5 mm.

[0081] In this embodiment, the thickness of the adhesive member 40 is 1 mm. In some other embodiments, the adhesive member 40 can also be 0.5 mm, 0.8 mm, 1.3 mm, 1.5 mm, or other thicknesses.

[0082] The above is a more optimal range of the thickness of the adhesive member 40 , which can further improve the fixing effect of the adhesive member 40 .

[0083] In some embodiments, the cover plate 20 is formed with a smoke exhaust channel (not shown), and the smoke exhaust channel is used to exhaust high-temperature smoke when the battery device 100 has thermal runaway.

[0084] In this embodiment, the cover plate 20 is hollow inside, and a smoke exhaust channel is formed inside the cover plate 20. The smoke exhaust channel has a port on the side facing the battery cell 10, so that the high-temperature smoke generated by the thermal runaway of the battery cell 10 can be discharged in time. In some other embodiments, the cover plate 20 can also form a smoke exhaust channel in other forms. For example, the cover plate 20 can be a hollow mesh structure. The cover plate 20 with a hollow mesh structure can have a number of breathable mesh holes, which can discharge the high-temperature smoke in time. In some other embodiments, the cover plate 20 can also be provided with a number of through holes, which can also serve as a smoke exhaust channel for the high-temperature smoke to be discharged.

[0085] The cover plate 20 forms a smoke exhaust channel to allow high-temperature smoke to be exhausted when the battery device 100 is in thermal runaway, thereby reducing the internal pressure and temperature during thermal runaway and reducing the problem of more serious safety accidents caused by overheating of the battery device 100.

[0086] Please refer to Figure 4 , Figure 7 and Figure 8 , Figure 4 for Figure 2 A schematic diagram of the top view of the battery device; Figure 7 for Figure 2 A schematic diagram of the top view of the cover plate in the battery device; Figure 8 For bonding parts Figure 7Schematic diagram of the distribution structure on the cover plate. In some embodiments, the smoke exhaust channel includes a plurality of exhaust holes 21 , and each exhaust hole 21 is arranged in a one-to-one correspondence with each battery cell 10 .

[0087] In this embodiment, the exhaust hole 21 is used to discharge high-temperature flue gas. The conduction direction of the exhaust hole 21 is the thickness direction of the cover plate 20. The circumferential cross-sectional shape of the exhaust hole 21 can be circular, polygonal, etc. The shape of the exhaust hole 21 can be adjusted as required. In addition, in this embodiment, the number of exhaust holes 21 is the same as the number of battery cells 10, and each exhaust hole 21 is arranged in a one-to-one correspondence with each battery cell 10. In some other embodiments, the number of exhaust holes 21 may also be different from the number of battery cells 10. For example, one exhaust hole 21 is arranged corresponding to multiple battery cells 10, or multiple exhaust holes 21 are arranged corresponding to one battery cell 10.

[0088] As described above, the exhaust hole 21 is provided corresponding to each battery cell 10 , so that when any battery cell 10 has thermal runaway, the high-temperature smoke can be quickly discharged.

[0089] Please refer to Fig. 9 , Fig. 9 for Figure 7 Schematic diagram of the cross-sectional structure of the cover plate along the Bb section. In some embodiments, the cover plate 20 includes a main body 201 and an exhaust portion 202, the exhaust portion 202 is convexly arranged on the side of the main body 201 facing the pressure strip, and the exhaust portion 202 has an exhaust hole 21; the smoke exhaust channel also includes an exhaust duct 22, the exhaust duct 22 is arranged in the exhaust portion 202, the exhaust duct 22 is connected to each exhaust hole 21, the conduction direction of the exhaust duct 22 is perpendicular to the conduction direction of the exhaust hole 21, and the exhaust duct 22 includes a port located on the side of the cover plate 20.

[0090] The exhaust hole 21 includes an opening facing the battery cell 10, and the exhaust hole 21 is set corresponding to the explosion-proof valve 15 on the battery cell 10. In this embodiment, the main body 201 has a plurality of exhaust parts 202 with protruding structures on one side facing the battery cell 10, and the exhaust part 202 forms a plurality of exhaust holes 21 and an exhaust duct 22. The cover plate 20 is fixed to the integrated busbar assembly 50 by an adhesive 40. After the thermal runaway explosion-proof valve 15 of the battery cell 10 is triggered, the opening of the exhaust hole 21 on the exhaust part 202 is connected to the explosion-proof valve 15 of the battery cell 10, and when the battery cell 10 is in thermal runaway, the high-temperature flue gas inside the battery cell 10 can be discharged more quickly. Among them, when the battery cell 10 is in thermal runaway, the high-temperature flue gas inside the battery cell 10 is discharged into the exhaust hole 21, and the exhaust duct 22 is used to discharge the flue gas inside the exhaust hole 21 out of the cover plate 20. The conduction direction of the exhaust duct 22 is parallel to the plane where the cover plate 20 is located. After the smoke inside the exhaust hole 21 enters the exhaust duct 22, it is discharged from the cover plate 20 from the port of the exhaust duct 22. In this embodiment, a plurality of exhaust parts 202 are arranged on the main body 201, and each exhaust part 202 is provided with a plurality of exhaust holes in the same row, and each exhaust part 202 is also provided with an exhaust duct. In some embodiments, the main body 201 also includes an upper cover 23 on the side facing away from the battery cell 10, and the upper cover 23 covers one end of the exhaust hole 21, and the upper cover 23 also covers one side of the exhaust duct 22. In other embodiments, the exhaust ducts 22 can also be connected to each other so that the high-temperature smoke can be discharged from the cover plate 20 more quickly. In other embodiments, please refer to Fig.10 , Fig.10 The main body 201 may not be provided with the upper cover 23, so that the exhaust hole 21 on the exhaust part 202 is a through hole, and the smoke entering the exhaust hole 21 is directly discharged to the side of the cover 20 facing away from the battery cell 10.

[0091] The above structure enables the high-temperature flue gas entering the exhaust hole 21 to be discharged from the cover plate 20 through the exhaust duct 22 .

[0092] In some embodiments, the battery cell 10 includes a shell (not marked), a battery cell body (not marked) and an explosion-proof valve 15. The shell forms a storage space (not marked), and a cover (not marked) is provided on one side of the storage space. The battery cell body is provided in the storage space, and the battery cell body has a smoke duct. The explosion-proof valve 15 is provided in the storage space, the explosion-proof valve 15 is provided on the cover, and the exhaust hole 21 is provided corresponding to the explosion-proof valve 15.

[0093] Among them, the battery cell body is used to produce an electrochemical reaction. In this embodiment, the battery cell body is a winding structure, which includes a positive electrode sheet (not shown), a negative electrode sheet (not shown) and a diaphragm (not shown). Among them, the positive electrode sheet, the diaphragm, the negative electrode sheet, and the diaphragm are stacked in multiple layers in sequence and wound into a cylindrical structure, and a flue gas duct (not shown) is formed inside, and the flue gas duct is used to discharge high-temperature flue gas from the battery cell 10. In some other embodiments, the battery cell body can also be a laminated structure. The explosion-proof valve 15 is used to release pressure when the internal pressure of the shell is too high to reduce the risk of explosion of the battery cell 10. When the pressure of the battery cell 10 is normal, the explosion-proof valve 15 is not triggered, and the explosion-proof valve 15 is not turned on. When the internal pressure of the battery cell 10 is abnormal, the explosion-proof valve 15 is triggered and turned on, which can quickly discharge the flue gas. The exhaust hole 21 abuts against the battery cell 10, and the exhaust hole 21 is set corresponding to the explosion-proof valve 15 of the battery cell 10, which can make the exhaust smoother in the event of thermal runaway, and reduce the problem of more serious safety accidents caused by thermal runaway. In some preferred embodiments, the shape of the exhaust hole 21 is the same as the shape of the explosion-proof valve 15, which can further increase the exhaust rate in the event of thermal runaway.

[0094] As mentioned above, when the battery cell 10 is within the normal temperature range, the explosion-proof valve 15 is not triggered. When the battery cell 10 is in thermal runaway, the explosion-proof valve 15 is triggered to discharge the high-temperature smoke. The exhaust hole 21 is arranged corresponding to the explosion-proof valve 15 to make the exhaust smoother.

[0095] In some embodiments, the cover plate 20 is a fiber composite material.

[0096] In this embodiment, the cover plate 20 is a fiber composite material, which is light, high in strength, and insulated and high temperature resistant. In other embodiments, the cover plate 20 can also be other high temperature resistant plastic cover plates 20, carbon fiber cover plates 20, etc.

[0097] The cover plate 20 is an insulating and high temperature resistant cover plate 20, which can provide insulation protection and prevent thermal runaway and ignition problems;

[0098] In some embodiments, reinforcing ribs are provided on the cover plate 20 (shown schematically).

[0099] The reinforcing ribs are arranged on the side of the cover plate 20 facing away from the battery cell 10 , and the reinforcing ribs may be in a straight line, wave shape, grid shape, circular shape, polygonal shape, etc. The reinforcing ribs and the cover plate 20 are an integrally formed structure.

[0100] The strength of the cover plate 20 can be improved by providing reinforcing ribs.

[0101] Please refer to Fig.11 , Fig.11Schematic diagram of the structure of the box according to some embodiments. In some embodiments, the battery device 100 further includes: a box 60, the box 60 has a receiving cavity (not shown); the battery cell 10, the integrated busbar assembly 50, the pressure strip 30 and the cover plate 20 are located in the receiving cavity. Both ends of the pressure strip 30 are connected to the box 60.

[0102] The box body 60 is used to protect the battery cell 10 and provide an insulated and sealed environment for the battery cell 10. In the present embodiment, the box body 60 is a rectangular body. In some other embodiments, the box body 60 can also be a cylinder, an irregular polygon, etc. In some embodiments, one or more sides of the cover plate 20 can also be fixed to the beam of the box body 60 by means of bolts, screws, rivets, etc., so that the cover plate 20 is fixed more firmly, the effect of the cover plate 20 clamping and fixing the pressure strip 30 is improved, and the pressure strip 30 is less likely to fall off. In some other embodiments, the battery device 100 also includes a fastening belt (not shown), which is located on the side of the cover plate 20 facing away from the battery cell 10, and the two ends of the fastening belt are fixed to the beam of the box body 60 by means of bolts, screws, rivets, etc., so as to further limit the cover plate 20, which can reduce the risk of the pressure strip 30 falling off.

[0103] In some embodiments, the battery device 100 includes multiple battery modules (not labeled), each battery module includes multiple battery cells 10 arranged along a first direction x, and each battery module is arranged along a second direction y, and the first direction x and the second direction y are perpendicular to each other; wherein the cover plate 20 covers each battery module.

[0104] In this embodiment, the battery device 100 includes four battery modules. In some other embodiments, the battery device 100 can also include three, five or other reasonable numbers of battery modules. The design of multiple battery modules of the battery device 100 can improve the energy storage capacity of the battery device 100, and can also manage the charge and discharge of multiple battery modules through the battery management system, which can better distribute the load. The design of multiple battery modules can also facilitate the maintenance of the battery device 100. Among them, the cover plate 20 covers each battery module, and the cover plate 20 can also reinforce the pressure strips 30 on each battery module at the same time.

[0105] Correspondingly, the present application further proposes an electrical device, which includes a battery device 100. The battery device 100 is the battery device 100 of any of the above embodiments, and the battery device 100 is used to provide electrical energy.

[0106] Finally, in a specific application scenario, the problem of the risk of shaking of the battery cell 10 in the existing battery device 100 is addressed. The battery device 100 of the present application includes a battery cell 10, an integrated busbar assembly 50, a pressure strip 30 and a cover plate 20. The integrated busbar assembly 50 is connected to each battery cell 10. The integrated busbar assembly 50 has a through groove, and the pressure strip 30 is connected to multiple battery cells 10 through the through groove; the cover plate 20 is arranged on the side of the integrated busbar assembly 50 facing away from the battery cell 10, and the cover plate 20 and the battery cell 10 clamp the pressure strip 30. The battery device 100 also includes an adhesive 40, and the integrated busbar assembly 50 is connected to the cover plate 20 through the adhesive 40. The adhesive 40 is an adhesive. The integrated busbar assembly 50 includes an isolation plate 51 and a plurality of converging components 52, the isolation plate 51 has a plurality of accommodating grooves and through grooves, each converging component 52 is arranged in each accommodating groove, and each converging component 52 is connected to each battery cell 10. The thickness of the adhesive 40 is 1 mm. The cover plate 20 has a plurality of exhaust holes 21, each exhaust hole 21 is arranged in one-to-one correspondence with each battery cell 10. The cover plate 20 also has an exhaust duct 22, the exhaust duct 22 is connected to each exhaust hole 21, and the exhaust duct 22 includes a port located on the side of the cover plate 20. The cover plate 20 is an insulating and high temperature resistant cover plate 20. The cover plate 20 is provided with reinforcing ribs.

[0107] In the above manner, the pressure strip 30 can fix the battery cell 10, thereby reducing the problem of shaking of the battery cell 10. In addition, the battery device 100 is also provided with a cover plate 20, which is connected to the integrated busbar assembly 50. The cover plate 20 squeezes the pressure strip 30 toward the battery cell 10. The cover plate 20 can play a role in fixing the pressure strip 30, reducing the risk of the pressure strip 30 falling off, and can reduce the problem of damage to the battery device 100. In addition, the cover plate 20 has a smoke exhaust channel, which can provide high-temperature smoke exhaust when the battery device 100 is in thermal runaway, reducing the possibility of safety accidents caused by thermal runaway.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery device, characterized in that: The battery device comprises: Multiple battery cells; An integrated busbar assembly, wherein the integrated busbar assembly is connected to each of the battery cells; A pressure bar, wherein the integrated busbar assembly has a through slot, and the pressure bar is connected to the plurality of battery cells through the through slot; A cover plate is arranged on a side of the integrated busbar assembly facing away from the battery cell, and the cover plate and the battery cell clamp the pressure strip.

2. The battery device according to claim 1, characterized in that: The battery device further comprises: An adhesive component, through which the integrated busbar assembly and the cover plate are connected.

3. The battery device according to claim 2, characterized in that: The bonding member is adhesive.

4. The battery device according to claim 2, characterized in that: The integrated busbar assembly comprises: The isolation plate and a plurality of flow collecting components, the isolation plate has a plurality of accommodating grooves and the through grooves, each of the flow collecting components is arranged in each of the accommodating grooves, and each of the flow collecting components is connected to each of the battery cells.

5. The battery device according to claim 4, characterized in that: The collecting component and the cover plate are connected through the adhesive member.

6. The battery device according to claim 2, characterized in that: The thickness of the adhesive member ranges from 0.5 mm to 3 mm.

7. The battery device according to claim 6, characterized in that: The thickness of the adhesive member ranges from 0.5 mm to 1.5 mm.

8. The battery device according to claim 4, characterized in that: The isolation plate is connected to the cover plate via the adhesive component, and the pressure strip is connected to the cover plate via the adhesive component.

9. The battery device according to claim 1, characterized in that: The cover plate is formed with a smoke exhaust channel, and the smoke exhaust channel is used to exhaust high-temperature smoke when the battery device has thermal runaway.

10. The battery device according to claim 9, characterized in that: The smoke exhaust channel includes a plurality of exhaust holes, and each of the exhaust holes is arranged in one-to-one correspondence with each of the battery cells.

11. The battery device according to claim 10, characterized in that: The cover plate comprises a main body and an exhaust portion, wherein the exhaust portion is protrudingly arranged on a side of the main body facing the pressure strip, and the exhaust portion has the exhaust hole; The smoke exhaust channel also includes an exhaust duct, which is arranged in the exhaust part, the exhaust duct is connected to each of the exhaust holes, the conducting direction of the exhaust duct is perpendicular to the conducting direction of the exhaust holes, and the exhaust duct includes a port located on the side of the cover plate.

12. The battery device according to claim 1, characterized in that: The cover plate is a fiber composite material part.

13. The battery device according to claim 1, characterized in that: The cover plate is provided with reinforcing ribs.

14. The battery device according to claim 1, characterized in that: The battery device further comprises: A box body, wherein the box body has a containing cavity; the battery cell, the integrated busbar assembly, the pressure strip and the cover plate are located in the containing cavity, and the two ends of the pressure strip are connected to the box body.

15. The battery device according to claim 1, characterized in that: The battery device comprises: A plurality of battery modules, each of the battery modules comprises a plurality of battery cells arranged along a first direction, each of the battery modules is arranged along a second direction, and the first direction is perpendicular to the second direction; wherein the cover plate covers each of the battery modules.

16. An electrical device, characterized in that: The electrical device comprises the battery device according to any one of claims 1 to 15, and the battery device is used to provide electrical energy.

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