Battery devices and power-consuming devices

Abstract

The present application discloses a battery device and an electrical device. The battery device includes a battery cell, an integrated busbar assembly and a pressure strip. The integrated busbar assembly includes an isolation plate and a plurality of busbar components, each busbar component is arranged on the isolation plate, and each busbar component is connected to each battery cell. The isolation plate also has a through groove, and the pressure strip includes at least a first part and a second part, the first part is connected to a plurality of battery cells through the through groove, and the second part is connected to the busbar component. As mentioned above, the battery device is provided with a pressure strip, which can fix the battery cell, thereby reducing the problem of battery cell shaking. On the other hand, the first part of the pressure strip is connected to the battery cell to fix the battery cell, and the second part of the pressure strip is connected to the busbar component, so that the fixing area of ​​the pressure strip is increased, the pressure strip is fixed more securely, the risk of the pressure strip falling off is reduced, and the problem of damage to the battery device 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 multiple battery cells, an integrated busbar assembly and a pressure strip. The integrated busbar assembly includes an isolation plate and multiple current collectors, each of which is arranged on the isolation plate, and each of which is connected to each of the battery cells; the isolation plate has a through groove, and the pressure strip includes a first part and a second part, the first part is connected to the second part, the first part is connected to the multiple battery cells through the through groove, and the second part is connected to each of the current collectors.

[0005] In the above structure, the battery device is provided with a pressure strip, which can fix the battery cell, thereby reducing the problem of battery cell shaking. On the other hand, the first part of the pressure strip is connected to the battery cell to fix the battery cell, and the second part of the pressure strip is connected to the busbar, so that the fixing area of ​​the pressure strip is increased, the pressure strip is fixed more firmly, and the risk of the pressure strip falling off is reduced, which can improve the performance of the battery device in resisting impact and collision, increase the main frequency of the battery device, and reduce the problem of damage to the battery device.

[0006] 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 and the second direction are perpendicular to each other; a plurality of pressure strips are provided, some of the pressure strips are intra-module pressure strips, and some of the pressure strips are inter-module pressure strips, the intra-module pressure strips connect the plurality of battery cells in the battery module, and the inter-module pressure strips connect the plurality of battery cells of two adjacent battery modules.

[0007] The above arrangement fixes multiple battery cells in the battery module through the inner-module pressure strip, and fixes multiple battery cells of two battery modules through the inter-module pressure strip, which can improve the fixing strength of the battery cells of each battery module.

[0008] In a possible embodiment, the battery device further includes: an adhesive member, which is arranged in the through groove, and the first part is connected to the battery cell through the adhesive member; the adhesive member is also arranged between the second part of the pressure strip and the busbar component, and the second part is connected to the busbar component through the adhesive member.

[0009] As described above, the pressure strip is fixed by the adhesive member, which has high fixing efficiency and good insulation, and can reduce the possibility of short circuit.

[0010] In a possible implementation manner, the adhesive member is adhesive glue.

[0011] The adhesive is elastic and can improve the expansion performance of the battery device.

[0012] In a possible implementation manner, the thickness of the adhesive member in the through groove ranges from 0.5 mm to 2.5 mm; the thickness of the adhesive member between the second portion and the collector component ranges from 0.5 mm to 2.5 mm.

[0013] 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.

[0014] In a possible implementation manner, the thickness of the adhesive member ranges from 0.5 mm to 1.5 mm.

[0015] 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.

[0016] 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, the first direction and the second direction are perpendicular to each other, the isolation plate has a plurality of through grooves, the plurality of through grooves are arranged in columns, and the adjacent sides of the tops of the battery cells in two adjacent columns are connected to a pressure strip through the through grooves in the two adjacent columns.

[0017] As described above, the battery cells are arranged in columns, and the shoulders on both sides of the top of the battery cells are fixed by applying pressure from the pressure strips, which can improve the reliability of the fixation of the battery cells.

[0018] In a possible implementation manner, the isolation plate has a protruding blocking portion, and the blocking portion is located between two adjacent rows of through grooves.

[0019] As described above, the blocking portion can reduce the possibility that the adhesive member overflows into the gap between adjacent battery cells.

[0020] In a possible implementation manner, there are multiple through slots in each column.

[0021] As described above, the application of the adhesive can be dispersed, so that the pressure strip is connected to each battery cell in a row, and the amount of adhesive used can be reduced.

[0022] In a possible implementation, the isolation board has a first limiting structure, the pressure strip has a second limiting structure that cooperates with the first limiting structure, and the pressure strip is limited on the isolation board by the first limiting structure and the second limiting structure.

[0023] The above can facilitate the positioning and installation of the layering strip.

[0024] In a possible implementation, the first limiting structure is one of a slot and a protrusion, and the second limiting structure is the other of the slot and the protrusion.

[0025] As described above, the cooperation between the card slot and the protrusion has a good limiting effect.

[0026] In a possible implementation manner, the pressure strip is a plastic pressure strip.

[0027] As mentioned above, the plastic layering strip is light in weight and has good stability.

[0028] In a possible embodiment, the battery device further includes: a box body, the box body having a accommodating cavity, the battery cell, the integrated busbar assembly and the pressure strip are located in the accommodating cavity; a fastening band, the fastening band is located on the side of the pressure strip facing away from the battery cell, and both ends of the fastening band are fixed to the box body.

[0029] As described above, the pressure strip can be fixed by the tightening belt, thereby further reducing the risk of the pressure strip falling off.

[0030] In a possible implementation manner, a limiting groove is formed on a side of the pressure strip facing away from the battery cell, and the fastening belt is located in the limiting groove.

[0031] As described above, the limiting groove can pre-install the fastening belt and limit the fastening belt, thereby reducing the possibility of shaking of the fastening belt.

[0032] In a possible implementation manner, an adhesive member is provided between the pressure strip and the fastening belt.

[0033] The adhesive element can improve the fixing effect of the fastening tape.

[0034] In a possible implementation manner, the pressure strip is coated on the outer surface of the fastening belt.

[0035] As mentioned above, the tightening belt has a better effect of fixing the pressure strip.

[0036] In a possible implementation manner, reinforcing ribs are provided on the pressure strip.

[0037] The above can improve the strength of the layering strip.

[0038] 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.

[0039] In the above-mentioned electrical device, the battery device is provided with a pressure strip, which can fix the battery cell, thereby reducing the problem of the battery cell shaking. On the other hand, the first part of the pressure strip is connected to the battery cell to fix the battery cell, and the second part of the pressure strip is connected to the busbar, so that the fixing area of ​​the pressure strip is increased, the pressure strip is fixed more firmly, the risk of the pressure strip falling off is reduced, and the possibility of damage to the battery device can be reduced.

[0040] 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

[0041] 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.

[0042] Figure 1 is a schematic structural diagram of a vehicle according to one or more embodiments;

[0043] Figure 2 is a schematic structural diagram of a battery device according to some embodiments;

[0044] Figure 3 is a schematic exploded view of a battery device according to some embodiments;

[0045] Figure 4 is a side view of a battery device according to some embodiments;

[0046] Figure 5 for Figure 4 A schematic diagram of the structure enlargement in the middle;

[0047] Figure 6 is a top view of a battery device according to some embodiments;

[0048] Figure 7 A schematic diagram of coating an adhesive member in a battery device according to some embodiments;

[0049] Figure 8 is a schematic cross-sectional structure diagram of a pressure strip and a fastening belt in a battery device according to some embodiments;

[0050] Fig. 9 FIG. 4 is a schematic top view of a pressure strip and a fastening belt in a battery device according to some embodiments.

[0051] Among them, 1000, vehicle; 200, controller; 300, motor; 100, battery device; 10, battery cell; 20, integrated busbar assembly; 21, isolation plate; 211, through groove; 212, blocking part; 22, conduit component; 23, collection circuit board; 30, pressure strip; 31, first part; 32, second part; 40, adhesive; 50, fastening belt; 51, fixing hole; 60, limiting groove; x, first direction; y, second direction. DETAILED DESCRIPTION

[0052] 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.

[0053] 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.

[0054] 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).

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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, the pressure strip includes at least a first part and a second part, the first part of the pressure strip is connected to the battery cell, and the second part of the pressure strip is connected to the busbar component. This arrangement can fix the battery cell through the pressure strip, reduce the risk of battery cell shaking, and the pressure strip is not easy to loosen and fall off.

[0062] 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.

[0063] Please refer to Figure 1 , Figure 1 is a schematic diagram of the structure of a vehicle according to one or more embodiments.

[0064] 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.

[0065] 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.

[0066] In order to improve the performance of the electrical device, the present application provides a battery device, please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 ; Figure 2 is a schematic structural diagram of a battery device according to some embodiments; Figure 3 is a schematic exploded view of a battery device according to some embodiments; Figure 4 is a side view of a battery device according to some embodiments; Figure 5 for Figure 4The structure at point A is enlarged.

[0067] In some embodiments, the battery device 100 includes a plurality of battery cells 10, an integrated busbar assembly 20, and a pressure strip 30. The integrated busbar assembly 20 includes an isolation plate 21 and a plurality of busbar components 22, each busbar component 22 is disposed on the isolation plate 21, and each busbar component 22 is connected to each battery cell 10; the isolation plate 21 has a through groove 211, and the pressure strip 30 includes at least a first portion 31 and a second portion 32, the first portion 31 is connected to the second portion 32, the first portion 31 is connected to the plurality of battery cells 10 through the through groove 211, and the second portion 32 is connected to each busbar component 22.

[0068] Among them, multiple battery cells 10 are connected in series or in parallel through the busbar component 22 in the integrated busbar assembly 20 to form one or more battery modules (not marked). In this embodiment, the busbar component 22 is an aluminum bar, and the aluminum bar is in a sheet shape. In some other embodiments, the busbar component 22 can also be a copper bar, etc., and the shape of the busbar component 22 can also be a reasonable shape such as a block or a rod. In this embodiment, the busbar component 22 is welded to the positive pole (not shown) or the negative pole (not shown) of the battery cell 10, so that the battery cell 10 is connected in series or in parallel to form a battery module. In addition, in this embodiment, the integrated busbar assembly 20 also includes a collection circuit board 23, and the collection circuit board 23 is connected to each busbar component 22. The integrated busbar assembly 20 is also used to collect parameter information of the battery cell 10 through the collection circuit board 23, 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. Among them, the isolation plate 21 is used to isolate each aluminum bar from the collection circuit board 23 to reduce the risk of short circuit. In some embodiments, the isolation plate 21 also has a receiving groove (not shown) and a wire harness receiving groove (not shown), and each converging component 22 is located in each receiving groove. The wire harness receiving groove is used to accommodate the collection circuit board 23. The pressure strip 30 is arranged on one side of the plurality of battery cells 10, and the pressure strip 30 is used to apply pressure to the battery cell 10 to fix the battery cell 10 in the box body, thereby reducing the risk of the battery cell 10 shaking. In this embodiment, the battery cells 10 are arranged in columns, and the number of battery cells 10 in each column is multiple. A pressure strip 30 is provided at the top between two adjacent columns of battery cells 10, and the two pressure strips 30 respectively apply pressure to the shoulders on both sides of the battery cell 10 to fix the battery cell 10, thereby reducing the possibility of shaking of the battery cell 10. In addition, in this embodiment, the pressure strip 30 includes a first part 31 and a second part 32. The first part 31 and the second part 32 are an integrated structure. The pressure strip 30 is connected to the shoulder of the battery cell 10 through the first part 31 to fix the battery cell 10. The second part 32 is connected to the collector component 22. The second part 32 is used to assist in fixing the pressure strip 30, improve the fixing strength of the pressure strip 30, and reduce the problem of the pressure strip 30 being loose. In this embodiment, each pressure strip 30 is connected to the shoulders of two adjacent columns of battery cells 10. In other embodiments, each pressure strip 30 can also be connected to a column of battery cells 10. In addition, the pressure strip 30 can also be connected to other positions of the battery cell 10 other than the shoulder. The pressure strip 30 can also play the role of fixing the battery cell 10. In this embodiment, the collector component 22 is located in the receiving groove of the isolation plate 21, and the collector component 22 is also fixed to the isolation plate 21 by rivets (not shown). In some other embodiments, the collector component 22 can also be fixed to the isolation plate 21 by other connection methods such as bonding and hot melting.

[0069] In 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. On the other hand, the first part 31 of the pressure strip 30 is connected to the battery cell 10 to fix the battery cell 10, and the second part 32 of the pressure strip 30 is connected to the busbar 22, so that the fixing area of ​​the pressure strip 30 is increased, the pressure strip 30 is fixed more firmly, and the risk of the pressure strip 30 falling off is reduced, which can improve the performance of the battery device 100 in resisting impact and collision, increase the main frequency of the battery device 100, and reduce the problem of damage to the battery device 100.

[0070] In some embodiments, the battery device 100 includes: multiple battery modules, each battery module includes multiple battery cells 10 arranged along a first direction x, each of the battery modules is arranged along a second direction y, and the first direction x and the second direction y are perpendicular to each other; there are multiple pressure strips 30, some of the multiple pressure strips 30 are intra-module pressure strips, and some of the pressure strips 30 are inter-module pressure strips, the intra-module pressure strips connect the multiple battery cells 10 in the battery module, and the inter-module pressure strips connect the multiple battery cells 10 of two adjacent battery modules.

[0071] In this embodiment, the battery modules are arranged in columns, and each battery module includes two columns of battery cells 10. A pressure strip 30 is provided between the shoulders of any two columns of battery cells 10, wherein the pressure strip 30 between two columns of battery cells 10 of the same battery module is an intra-module pressure strip, and the pressure strip 30 between two columns of battery cells 10 of two adjacent battery modules is an inter-module pressure strip. The inter-module pressure strip can fix the battery cells 10 on the one hand, and on the other hand, the inter-module pressure strip can also fix the two battery modules. In other embodiments, each battery module can also include other columns of battery cells 10, such as three columns or four columns. In addition, the number of battery cells 10 in each battery module can be the same or different.

[0072] As described above, the multiple battery cells 10 in the battery module are fixed by the intra-module press strip, and the multiple battery cells 10 of the two battery modules are fixed by the inter-module press strip, so that the fixing strength of the battery cells 10 of each battery module can be improved.

[0073] Please refer to Figure 6 and Figure 7 , Figure 6 is a top view of a battery device according to some embodiments; Figure 7 Schematic diagram of adhesive coating in a battery device according to some embodiments. In some embodiments, the battery device 100 further includes: an adhesive 40, the adhesive 40 is disposed in the through groove 211, and the first portion 31 is connected to the battery cell 10 through the adhesive 40; the adhesive 40 is also disposed between the second portion 32 of the pressure strip 30 and the current collecting component 22, and the second portion 32 is connected to the current collecting component 22 through the adhesive 40.

[0074] In this embodiment, the adhesive 40 is a resin adhesive 40. In some other embodiments, the adhesive 40 may also be a rubber adhesive 40, an inorganic adhesive 40, etc. Before fixing the bead 30, the adhesive 40 is first applied to the through groove 211 of the isolation plate 21 and the confluence component 22, and then the bead 30 is placed in the corresponding position so that the bead 30 is pressed on the adhesive 40 of the through groove 211 above the shoulder of the battery cell 10 and the adhesive 40 of the confluence component 22, and then a certain pressure is applied to firmly bond the bead 30 to the confluence component 22 and the shoulder of the battery cell 10, and then the pressure is removed to complete the fixing of the bead 30.

[0075] As described above, the pressure strip 30 is fixed by the adhesive member 40 , which has high fixing efficiency and good insulation, and can reduce the possibility of short circuit.

[0076] 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 .

[0077] In some embodiments, the thickness of the adhesive member 40 in the through groove 211 ranges from 0.5 mm to 2.5 mm. The thickness of the adhesive member 40 between the second portion 32 of the pressure strip 30 and the current collecting component 22 ranges from 0.5 mm to 2.5 mm.

[0078] In this embodiment, the thickness of the adhesive member 40 in the through groove 211 is 1 mm, and the thickness of the adhesive member 40 between the second portion 32 of the pressure strip 30 and the conduit component 22 is 1 mm. In other embodiments, the thickness of the adhesive member 40 can also be 0.5 mm, 0.8 mm, 1.5 mm, 1.8 mm, 2.5 mm, etc. In addition, in this embodiment, the thickness of the adhesive member 40 in the through groove 211 is the same as the thickness of the adhesive member 40 on the conduit component 22. In other embodiments, the thickness of the adhesive member 40 in the through groove 211 can also be different from the thickness of the adhesive member 40 on the conduit component 22.

[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 thickness of 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 battery device 100 includes multiple battery modules, each battery module includes multiple battery cells 10 arranged along a first direction x, each battery module is arranged along a second direction y, the first direction x and the second direction y are perpendicular to each other, the isolation plate 21 has multiple through grooves 211, the multiple battery cells 10 are arranged in columns, and the multiple through grooves 211 are arranged in columns accordingly, and the adjacent sides of the tops of two adjacent columns of battery cells 10 are connected to a pressure strip 30 through the two adjacent columns of through grooves 211.

[0084] In this embodiment, the number of through slots 211 in each column on the isolation plate 21 is multiple, and the through slots 211 correspond to the battery cells 10 one by one. The pressure strip 30 is connected to the battery cells 10 in a column one by one through the multiple through slots 211 in a column. In some other embodiments, the number of through slots 211 in each column can also be one, or the relationship between the through slots 211 in each column and the battery cells 10 is not one by one, that is, the pressure strip 30 can be connected to multiple battery cells 10 through one through slot 211.

[0085] As described above, the battery cells 10 are arranged in rows, and the shoulders on both sides of the top of the battery cells 10 are fixed by applying pressure from the pressure strips 30 , which can improve the reliability of fixing the battery cells 10 .

[0086] Further, in this embodiment, the second portion 32 is disposed on both sides of the first portion 31 of the pressure strip 30. The second portions 32 on both sides of the pressure strip 30 are respectively connected to the busbars 22 corresponding to the two columns of battery cells 10. In other embodiments, the second portion 32 is disposed on one side of the first portion 31 of the pressure strip 30, so that the pressure strip 30 is connected to the busbar 22 corresponding to one column of battery cells 10 in the two columns of battery cells 10.

[0087] In some embodiments, the isolation plate 21 has a protruding blocking portion 212 , and the blocking portion 212 is located between two adjacent rows of through slots 211 .

[0088] The pressure strip 30 connects two adjacent columns of battery cells 10 through two adjacent columns of through grooves 211, and a blocking portion 212 is provided in the area between the two columns of through grooves 211 on the isolation plate 21, which can reduce the gap between the two battery cells 10 where the adhesive 40 flows into during the coating process of the adhesive 40. The blocking portion 212 is a convex structure, and one or more blocking portions 212 can be provided between two adjacent through grooves 211.

[0089] As described above, the blocking portion 212 can reduce the possibility that the adhesive member 40 overflows into the gap between the adjacent battery cells 10 .

[0090] In some embodiments, the opening shape of the through slot 211 on the isolation plate 21 is elliptical or polygonal.

[0091] In this embodiment, the opening shape of the through slot 211 is a rectangle. In some other embodiments, the through slot 211 can also be other reasonable shapes such as a triangle, an ellipse, an irregular polygon, etc.

[0092] As mentioned above, the shape of the through slot 211 can be adjusted as required.

[0093] In some embodiments, the isolation plate 21 has a first limiting structure (not marked), the pressure strip 30 has a second limiting structure (not marked) that cooperates with the first limiting structure, and the pressure strip 30 is limited on the isolation plate 21 by the first limiting structure and the second limiting structure.

[0094] The first limiting structure and the second limiting structure can be used to position the pressure strip 30 during the process of bonding and fixing the pressure strip 30. The first limiting structure and the second limiting structure can be specifically a groove limiting structure, a slot and protrusion limiting structure, a magnetic limiting structure, etc. In addition, the number of the first limiting structure and the second limiting structure can be one or more.

[0095] By providing the first limiting structure and the second limiting structure, the positioning and installation of the pressure strip 30 can be facilitated.

[0096] In some embodiments, the first limiting structure is one of a slot and a protrusion, and the second limiting structure is the other of the slot and the protrusion.

[0097] In the present embodiment, the first limiting structure is a slot, and the second limiting structure is a protrusion. When bonding and fixing the pressure strip 30, first apply the adhesive, then align the protrusion on the pressure strip 30 with the slot on the isolation plate 21, and then apply a certain pressure to firmly bond the pressure strip 30 to the confluence component 22 and the shoulder of the battery cell 10, and then cancel the pressure to complete the fixation of the pressure strip 30. In some other embodiments, the first limiting structure can also be a protrusion, and the second limiting structure can be a slot. In addition, in some embodiments, the number of the first limiting structure and the second limiting structure is multiple, among which some of the first limiting structures are slots, and other parts of the first limiting structures are protrusions. Correspondingly, some of the second limiting structures are protrusions, and other parts of the second limiting structures are slots. In addition, in the present embodiment, the shape of the slot is square, and in some other embodiments, the shape of the slot can also be other shapes such as circular, triangular, polygonal, etc.

[0098] As described above, the cooperation between the card slot and the protrusion has a good limiting effect.

[0099] In some embodiments, the bead 30 is a plastic bead.

[0100] In this embodiment, the material of the bead 30 is a pultruded fiber reinforced composite plastic, which has the characteristics of light weight, high strength and good stability. In other embodiments, the plastic bead can also be a polypropylene plastic bead, an acrylonitrile-butadiene-styrene copolymer plastic bead, or other plastic bead. In other embodiments, the bead 30 can also be a metal bead, a carbon fiber bead, or the like.

[0101] As mentioned above, the plastic layering strip is light in weight and has good stability.

[0102] Please refer to Figure 8 and Fig. 9 , Figure 8 is a schematic cross-sectional structure diagram of a pressure strip and a fastening belt in a battery device according to some embodiments; Fig. 9 Schematic diagram of the top view of the bead and the fastening belt in the battery device according to some embodiments. In some embodiments, the battery device 100 further includes: a box body, the box body has a receiving cavity, the battery cell 10, the integrated busbar assembly 20 and the bead 30 are located in the receiving cavity; a fastening belt 50, the fastening belt 50 is located on the side of the bead 30 facing away from the battery cell 10, and the two ends of the fastening belt 50 are fixed to the box body.

[0103] The box body 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 is a rectangular body. In some other embodiments, the box body can also be a cylinder, an irregular polygon, etc. Among them, the fastening belt 50 is used to further fix the pressure strip 30. The extension direction of the fastening belt 50 is the same as the extension direction of the pressure strip 30. The fastening belt 50 is located on the pressure strip 30. The fastening belt 50 can reduce the possibility of the pressure strip 30 being debonded and loosened. In the present embodiment, the pressure strip 30 is a steel belt. In some other embodiments, the pressure strip 30 can also be a plastic belt, an alloy belt or other types of metal belts. In addition, in the present embodiment, fixing holes 51 are provided at both ends of the fastening belt 50. The two ends of the fastening belt 50 are fixed to the beam of the box body by bolts. In other embodiments, the two ends of the fastening belt 50 can also be fixed to the box body by screws, rivets, etc. In addition, in this embodiment, a fastening belt 50 is provided on the side of each pressure strip 30 facing away from the battery cell 10. In other embodiments, two, three or other numbers of fastening belts 50 may be provided on the side of each pressure strip 30 facing away from the battery cell 10. In addition, in this embodiment, a fastening belt 50 is provided on one side of the inter-module pressure strip, and no fastening belt 50 is provided on one side of the intra-module pressure strip. In other embodiments, fastening belts 50 may be provided on one side of both the inter-module pressure strip and the intra-module pressure strip.

[0104] By providing the fastening belt 50 , the pressure strip 30 can be fixed by the fastening belt 50 , further reducing the risk of the pressure strip 30 falling off.

[0105] In some embodiments, a limiting groove 60 is formed on a side of the pressure strip 30 facing away from the battery cell 10 , and the fastening belt 50 is located in the limiting groove 60 .

[0106] The limiting groove 60 is a blind groove, and the groove width of the limiting groove 60 is the same as the bandwidth of the fastening belt 50. The limiting groove 60 can position the fastening belt 50 when installing the fastening belt 50, so as to pre-install the fastening belt 50. In addition, the limiting groove 60 can also reduce the problem of the fastening belt 50 shaking on the pressure strip 30. In some other embodiments, an adhesive member 40 is provided between the pressure strip 30 and the fastening belt 50. The adhesive member 40 can further improve the effect of the fastening belt 50 fixing the pressure strip 30.

[0107] As described above, the limiting groove 60 can pre-install the fastening belt 50 and limit the fastening belt 50 to reduce the possibility of shaking of the fastening belt 50.

[0108] In some embodiments, the pressure strip 30 is coated on the outer surface of the fastening belt 50 .

[0109] In this embodiment, the pressure strip 30 is in the shape of an elongated tube, and the cross-sectional shape of the pressure strip 30 is a U-shaped shape. The pressure strip 30 is sleeved on the fastening belt 50, and the two ends of the fastening belt 50 are fixed on the box body. The fastening belt 50 is passed through the through hole, which can make it more difficult for the pressure strip 30 and the fastening belt 50 to move relative to each other, and can further improve the effect of the fastening belt 50 in fixing the pressure strip 30.

[0110] The fastening belt 50 is arranged to pass through the through hole, and the fastening belt 50 has a better effect of fixing the pressure strip 30 .

[0111] In some embodiments, reinforcing ribs (not shown) are provided on the pressure strip 30 .

[0112] The reinforcing ribs are arranged on the side of the pressure strip 30 facing away from the battery cell 10 , and the reinforcing ribs may be in a straight line, a wave shape, a grid shape, a circle, a polygon, etc. The reinforcing ribs and the pressure strip 30 are an integrally formed structure.

[0113] The strength of the pressure strip 30 can be improved by providing the reinforcing ribs.

[0114] 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.

[0115] Finally, in a specific application scenario, the problem of the risk of shaking of the battery cells 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 20, and a pressure strip 30. The integrated busbar assembly 20 includes an isolation plate 21 and a plurality of current collectors 22, each of which is arranged on the isolation plate 21, and each of which is connected to each battery cell 10. The isolation plate 21 has a through groove 211, and the pressure strip 30 includes at least a first part 31 and a second part 32, the first part 31 is connected to the second part 32, the first part 31 is connected to the plurality of battery cells 10 through the through groove 211, and the second part 32 is connected to the current collector 22. The battery device 100 includes a plurality of battery modules, each of which includes a plurality of battery cells 10 arranged along a first direction x. 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. There are multiple beading strips 30, some of which are intra-module beading strips, and some of which are inter-module beading strips. The intra-module beading strips connect multiple battery cells 10 in the battery module, and the inter-module beading strips connect multiple battery cells 10 of two adjacent battery modules. The battery device 100 also includes an adhesive member 40, which is arranged in the through groove 211, and the first part 31 is connected to the battery cell 10 through the adhesive member 40; the adhesive member 40 is also arranged between the second part 32 of the beading strip 30 and the confluence component 22, and the second part 32 is connected to the confluence component 22 through the adhesive member 40. The thickness of the adhesive member 40 is 1 mm. The battery cells 10 are arranged in columns, and the multiple through grooves 211 are arranged in columns accordingly. The adjacent sides of the tops of two adjacent columns of battery cells 10 are connected to a beading strip 30 through the two adjacent columns of through grooves 211. The isolation plate 21 has a protruding blocking portion 212, and the blocking portion 212 is located between the two adjacent columns of through grooves 211. The isolation plate 21 has a slot, and the pressure strip 30 has a protrusion that matches the slot. The pressure strip 30 is limited on the isolation plate 21 by the slot and the protrusion. The pressure strip 30 is a plastic pressure strip 30. The battery device 100 also includes a box body, which has a receiving cavity, and the battery cell 10, the integrated busbar assembly 20 and the pressure strip 30 are located in the receiving cavity; the fastening belt 50 is located on the side of the pressure strip 30 that is away from the battery cell 10, and the two ends of the fastening belt 50 are fixed to the box body.

[0116] 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. On the other hand, the first part 31 of the pressure strip 30 is connected to the battery cell 10 to fix the battery cell 10, and the second part 32 of the pressure strip 30 is connected to the busbar 22, so that the fixing area of ​​the pressure strip 30 is increased, the pressure strip 30 is fixed more firmly, the risk of the pressure strip 30 falling off is reduced, and the possibility of damage to the battery device 100 can be reduced.

[0117] 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, the integrated busbar assembly comprising an isolation plate and a plurality of busbar components, each of the busbar components being disposed on the isolation plate, and each of the busbar components being connected to each of the battery cells; The pressure strip, the isolation plate has a through groove, the pressure strip includes a first part and a second part, the first part is connected to the second part, the first part is connected to the plurality of battery cells through the through groove, and the second part is connected to each of the current collecting components.

2. The battery device according to claim 1, characterized in that: The battery device comprises: A plurality of battery modules, each of which comprises a plurality of battery cells arranged along a first direction, and each of which is arranged along a second direction, the first direction and the second direction being perpendicular to each other; There are multiple pressure strips, some of which are intra-module pressure strips, and some of which are inter-module pressure strips. The intra-module pressure strips connect multiple battery cells in the battery module, and the inter-module pressure strips connect multiple battery cells of two adjacent battery modules.

3. The battery device according to claim 1, characterized in that: The battery device further comprises: An adhesive member is disposed in the through groove, and the first portion is connected to the battery cell through the adhesive member; the adhesive member is also disposed between the second portion and the current collecting component, and the second portion is connected to the current collecting component through the adhesive member.

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

5. The battery device according to claim 3, characterized in that: The thickness of the adhesive member in the through groove ranges from 0.5 mm to 2.5 mm; the thickness of the adhesive member between the second portion and the collector component ranges from 0.5 mm to 2.5 mm.

6. The battery device according to claim 5, characterized in that: The thickness of the adhesive member ranges from 0.5 mm to 1.5 mm.

7. The battery device according to claim 3, 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, the first direction and the second direction are perpendicular to each other, the isolation plate has a plurality of through grooves, the plurality of through grooves are arranged in columns, and the adjacent sides of the tops of the battery cells in two adjacent columns are connected to a pressure strip through the through grooves in the two adjacent columns.

8. The battery device according to claim 7, characterized in that: The isolation plate is provided with a protruding blocking portion, and the blocking portion is located between two adjacent rows of through grooves.

9. The battery device according to claim 7, characterized in that: The number of the through slots in each column is plural.

10. The battery device according to claim 1, characterized in that: The isolation board has a first limiting structure, the pressure strip has a second limiting structure that cooperates with the first limiting structure, and the pressure strip is limited by the first limiting structure and the second limiting structure on the isolation board.

11. The battery device according to claim 10, characterized in that: The first limiting structure is one of a slot and a protrusion, and the second limiting structure is the other of the slot and the protrusion.

12. The battery device according to claim 1, characterized in that: The layering strip is a plastic layering strip.

13. The battery device according to claim 1, characterized in that: The battery device further comprises: A box body, the box body having a containing cavity, the battery cell, the integrated busbar assembly and the pressure strip are located in the containing cavity; A fastening belt is located on a side of the pressure strip facing away from the battery cell, and two ends of the fastening belt are fixed to the box body.

14. The battery device according to claim 13, characterized in that: A limiting groove is formed on a side of the pressure strip facing away from the battery cell, and the fastening belt is located in the limiting groove.

15. The battery device according to claim 14, characterized in that: An adhesive member is arranged between the pressure strip and the fastening belt.

16. The battery device according to claim 13, characterized in that: The pressure strip is coated on the outer surface of the fastening belt.

17. The battery device according to any one of claims 1 to 16, characterized in that: The pressure strip is provided with reinforcing ribs.

18. An electrical device, characterized in that: The electrical device comprises the battery device according to any one of claims 1 to 17, and the battery device is used to provide electrical energy.

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