Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment, and relates to the technical field of batteries, the battery device comprises a box body, a busbar assembly arranged in the box body and a plurality of battery monomers, each battery monomer comprises an explosion-proof valve and an electrode terminal, and the busbar assembly comprises a substrate, a bus member and a sampling member; a first avoiding hole for avoiding the anti-explosion valve and a second avoiding hole for avoiding the electrode terminal are formed in the substrate, and one side, facing the battery monomers, of the substrate is adhered to the plurality of battery monomers; the confluence piece is arranged on one side of the substrate, and the electrode terminal extends into the second avoiding hole to be electrically connected with the confluence piece; the sampling piece is arranged on one side, deviating from the battery monomers, of the substrate, and is electrically connected with the convergence piece. According to the battery device, the overall structural strength of the battery device is improved, and the dominant frequency of the battery device is also improved.

Description

Technical Field

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

[0002] The battery device includes a box body and a plurality of battery cells arranged in the box body. A busbar and a sampling piece are arranged on the side of the battery cell facing the box body opening. The busbar is used to electrically connect with the electrode terminals of the battery cell to collect the electrical signals of the battery cell, and the sampling piece is electrically connected to the busbar. When the battery device is used, such as when it is used in a vehicle, there is vibration during the driving of the vehicle, which causes the internal connection of the battery device to loosen and the structural strength of the battery device to be low. Utility Model Content

[0003] The main purpose of the present application is to provide a battery device and an electrical device, aiming to at least improve the technical problem of low structural strength of the battery device.

[0004] According to some embodiments of the present application, the present application provides a battery device, including a box body, a busbar assembly arranged in the box body and a plurality of battery cells, each of the battery cells including an explosion-proof valve and an electrode terminal, the busbar assembly including a substrate, a busbar and a sampling piece; the substrate is provided with a first avoidance hole for avoiding the explosion-proof valve, and a second avoidance hole for avoiding the electrode terminal, the side of the substrate facing the battery cell is bonded to the plurality of battery cells; the busbar is arranged on one side of the substrate, the electrode terminal extends into the second avoidance hole and is electrically connected to the busbar; the sampling piece is arranged on the side of the substrate away from the battery cell, and the sampling piece is electrically connected to the busbar.

[0005] By integrating the sampling piece and the busbar piece on the substrate and arranging them on the side of the substrate facing away from the battery cell, and bonding the side of the substrate facing the battery cell to multiple battery cells, the battery cell and the busbar assembly are formed into a whole, which can reduce the possibility of loosening between the battery cell and the substrate during vibration, which is beneficial to improving the overall structural strength of the battery device, thereby increasing the main frequency of the battery device.

[0006] In some embodiments, a groove is provided on the side of the substrate facing the battery cell, the groove includes a groove bottom wall and a groove side wall surrounding the groove bottom wall, the first avoidance hole is provided through the groove bottom wall, the explosion-proof valve passes through the groove and extends into the first avoidance hole, and the groove side wall is provided around the periphery of the explosion-proof valve.

[0007] By arranging a groove on the side of the substrate facing the battery cell, the opening of the groove is covered on the battery cell, the explosion-proof valve extends from the groove into the first avoidance hole, and the explosion-proof valve cover is arranged in the groove by abutting the groove side wall with the top surface of the battery cell, the possibility of glue flowing to the explosion-proof valve during the bonding process can be reduced, thereby reducing the risk of failure of the explosion-proof valve.

[0008] In some embodiments, the projection area of ​​the first avoidance hole on the bottom wall of the groove is smaller than the surface area of ​​the bottom wall of the groove; in a direction perpendicular to the central axis of the first avoidance hole, there is a gap between the first avoidance hole and the side wall of the groove.

[0009] A gap is provided between the first avoidance hole and the side wall of the groove, and the projection of the first avoidance hole on the bottom wall of the groove is smaller than the surface area of ​​the bottom wall of the groove. The size of the side wall of the groove is designed to be larger than the first avoidance hole, so that the explosion-proof valve can pass through the groove and extend into the first avoidance hole, thereby reducing the possibility of interference and facilitating assembly.

[0010] In some embodiments, a retaining ring is disposed on a side of the substrate facing the battery cell, the retaining ring is disposed around the outer circumference of the first avoidance hole, and the explosion-proof valve passes through the retaining ring and extends into the first avoidance hole.

[0011] By arranging a retaining ring on the periphery of the first avoidance hole, the retaining ring abuts against the battery cell to isolate the explosion-proof valve in the cavity of the retaining ring, thereby reducing the risk of glue flowing into the explosion-proof valve, that is, reducing the possibility of smoke exhaust failure caused by the explosion-proof valve being adhered to the glue.

[0012] In some embodiments, the substrate covers the plurality of battery cells, and a side enclosure plate is provided on the side of the substrate facing the battery cells. The side enclosure plate is provided along the outer edge of the substrate, and the side enclosure plate abuts against the battery cells located at the periphery of the plurality of battery cells.

[0013] By arranging a side baffle plate on the substrate that abuts against the battery body, specifically the battery baffle plate is arranged at the outer edge of the substrate and abuts against the battery cells located at the periphery of the plurality of battery cells, the risk of glue flowing from the periphery of the battery body into the box can be reduced.

[0014] In some embodiments, a clamping component is disposed on the substrate, and the busbar is clamped with the clamping component.

[0015] By arranging a clamping piece on the substrate and clamping the busbar with the substrate, installation and disassembly can be facilitated.

[0016] In some embodiments, the snap-fit ​​component includes a first snap-fit ​​and a second snap-fit, and the busbar is provided with a first snap-fit ​​and a second snap-fit; the first snap-fit ​​is snap-fitted with the first snap-fit, and the second snap-fit ​​is snap-fitted with the second snap-fit.

[0017] By setting two clips on the substrate, two snap ports are respectively set at the positions of the busbar corresponding to the two clips, the first clip is docked with the first snap port, and the second clip is snapped with the second snap port. The busbar can be snapped from two positions, which can improve the reliability of the snapping and the connection strength, and is beneficial to improving the strength of the entire battery device.

[0018] In some embodiments, a mounting groove is provided on a side of the substrate facing away from the battery cell, the second avoidance hole is provided through the bottom surface of the mounting groove, the collector is provided in the mounting groove, and the first clip and the second clip are provided on the side wall of the mounting groove.

[0019] By providing a mounting groove on the substrate for mounting the busbar, the internal space of the battery device can be saved and the volume energy density of the battery device can be improved.

[0020] In some embodiments, a plurality of the mounting grooves are provided on the substrate, each of the mounting grooves corresponds to a busbar and a clip, two second avoidance holes are provided in each of the mounting grooves, the two second avoidance holes are arranged along the length direction of the busbar, and the first clip and the second clip are respectively provided on both sides of the busbar along the length direction.

[0021] By setting multiple installation grooves on the substrate, a clip is set in each installation groove for installing a busbar, and two second avoidance holes are set at the bottom of each installation groove for two electrode terminals to pass through. Two clips are respectively set on both sides of the length direction of the busbar to install the busbar in the installation groove, which can save the installation space of the battery device and is conducive to improving the volume energy density.

[0022] In some embodiments, the first clip includes a fixing plate and a first clipping end arranged on the fixing plate, and the fixing plate is connected to the side wall; the second clip includes an elastic plate capable of elastic deformation and a second clipping end arranged on the end of the elastic plate, the first clipping end is clipped with the first clip, and the second clipping end is clipped with the second clip.

[0023] By providing a fixed first buckle and a movable second buckle, the advantages of convenient connection of the busbar and firm connection can be achieved.

[0024] In some embodiments, the first buckle is a dead buckle, and the second buckle is a live buckle; or,

[0025] The first buckle is a movable buckle, and the second buckle is a fixed buckle.

[0026] By configuring the snap connector to be a combination of a dead snap and a live snap, the flexibility and convenience of the connection can be improved while ensuring the reliability of the connection.

[0027] In some embodiments, the connector includes a first snap-in and a second snap-in, and the busbar is provided with a first buckle and a second buckle; the first buckle is snap-fitted to the first snap-in, and the second buckle is snap-fitted to the second snap-in.

[0028] By setting two bayonet holes on the substrate, two buckles are respectively set at the positions of the busbar corresponding to the two bayonet holes, the first buckle is docked with the first bayonet hole, and the second buckle is engaged with the second bayonet hole. The busbar can be engaged from two positions, which can improve the reliability of the engagement and the connection strength, and is beneficial to improving the strength of the entire battery device.

[0029] In some embodiments, the busbar is disposed on a side of the substrate facing away from the battery cells.

[0030] By arranging the busbar on the side of the substrate away from the battery cell, it is convenient to bond the substrate to the battery cell and also convenient to connect the busbar to the sampling piece.

[0031] In some embodiments, a rib is disposed on a side of the substrate facing the battery cell.

[0032] By arranging ribs on the substrate, the strength of the substrate can be improved, and the substrate is not easily deformed during use.

[0033] 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

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0035] Figure 1 A schematic diagram of the structure of a vehicle according to some embodiments of the present application;

[0036] Figure 2 A schematic diagram of an exploded structure of a battery device according to some embodiments of the present application;

[0037] Figure 3 Another schematic diagram of the three-dimensional structure of a battery device according to some embodiments of the present application;

[0038] Figure 4A schematic diagram of the three-dimensional structure of a battery cell of a battery device according to some embodiments of the present application;

[0039] Figure 5 A partial structural schematic diagram of a busbar assembly of a battery device according to some embodiments of the present application;

[0040] Figure 6 A schematic structural diagram of a substrate of a battery device according to some embodiments of the present application from one perspective;

[0041] Figure 7 for Figure 6 A schematic diagram of the enlarged structure at A;

[0042] Figure 8 for Figure 7 A schematic diagram of the structure of the middle groove and the first avoidance hole;

[0043] Fig. 9 A schematic structural diagram of a substrate of a battery device according to some embodiments of the present application from another perspective;

[0044] Fig.10 for Fig. 9 A schematic diagram of the enlarged structure at B;

[0045] Fig.11 for Fig. 9 Schematic diagram of the partial structure of the substrate in perspective.

[0046] Description of Figure Numbers:

[0047] 1000. Vehicles;

[0048] 100, battery device; 200, controller; 300, motor; 400, device body;

[0049] 10. Box body; 11. Upper cover; 12. Box body;

[0050] 20. Battery cell; 201. Explosion-proof valve; 202. Electrode terminal; 203. Top surface;

[0051] 30. Busbar assembly;

[0052] 1. Accommodating cavity; 2. Base plate; 21. First avoidance hole; 22. Second avoidance hole; 23. Groove; 231. Groove bottom wall; 232. Groove side wall; 3. Confluence piece; 4. Sampling piece; 5. Rib; 6. Side baffle plate; 7. First buckle; 71. Fixing plate; 72. First clamping end; 8. Second buckle; 81. Elastic plate; 82. Second clamping end; 9. Mounting groove.

[0053] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in this embodiment to clearly and completely describe the technical solution in this embodiment. Obviously, the described embodiment is only a part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0055] It should be noted that all directional indications in this embodiment (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0056] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0058] In addition, the technical solutions between the various embodiments of the present application can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application. It should be understood that the specific embodiments described here are only used to explain this application and are not used to limit this application.

[0059] The descriptions of directions such as "up", "down", "front", "back", "left" and "right" in this application are based on the directions shown in the drawings and are only used to explain the relative positional relationship between the components in the postures shown in the drawings. If the specific posture changes, the directional indication will also change accordingly.

[0060] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0061] The battery device includes a box body and a plurality of battery cells arranged in the box body. A busbar and a sampling piece are arranged on the side of the battery cell facing the box body opening. The busbar is used to electrically connect to the electrode terminals of the battery cell, and the sampling piece is electrically connected to the busbar. When the battery device is used, such as when it is used in a vehicle, there is vibration during the driving of the vehicle, which causes the internal connection of the battery device to loosen, and the structural strength of the battery device is low.

[0062] After careful research, the applicant found that in the related art, an isolation plate is generally set on the top of the battery cell, and the sampling piece is generally a flexible circuit board, which extends along the arrangement direction of the battery cell. The busbar can be an adapter, which electrically connects the battery cell and the sampling piece to play a role in signal collection. In the related art, the isolation plate is generally placed on top of the battery cell. During the driving process of the vehicle, there is inevitably vibration, and the connection between the isolation plate and the battery cell will loosen, resulting in low structural strength of the battery device, which also leads to low main frequency of the battery device.

[0063] To this end, the applicant provides a battery device, including a box, a busbar assembly arranged in the box, and a plurality of battery cells, each battery cell including an explosion-proof valve and an electrode terminal, and the busbar assembly including a substrate, a busbar and a sampling piece; the substrate is provided with a first avoidance hole for avoiding the explosion-proof valve, and a second avoidance hole for avoiding the electrode terminal, and the side of the substrate facing the battery cell is bonded to the plurality of battery cells; the busbar is arranged on the side of the substrate away from the battery cell, and the electrode terminal extends into the second avoidance hole and is electrically connected to the busbar; the sampling piece is arranged on the side of the substrate away from the battery cell, and the sampling piece is electrically connected to the busbar. By integrating the sampling piece and the busbar on the substrate, and arranging them on the side of the substrate away from the battery cell, and bonding the side of the substrate facing the battery cell to the plurality of battery cells, the battery cell and the busbar assembly are formed into a whole, which can reduce the possibility of loosening between the battery cell and the substrate during vibration, which is beneficial to improving the overall structural strength of the battery device, and thus improving the main frequency of the battery device.

[0064] Please refer to Figure 1 , Figure 1A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The electrical equipment may be a vehicle 1000, and the vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000, for example, the battery device 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to power the motor 300, for example, for the working power demand of the vehicle 1000 during starting, navigation and driving.

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

[0067] The battery device 100 mentioned in the embodiment of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells 20, and the plurality of battery cells 20 are connected in series, in parallel or in mixed connection through a busbar.

[0068] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells 20 .

[0069] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells 20 to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells 20 by a cable tie.

[0070] In some embodiments, the battery device 100 may be a battery pack, which includes a case 10 and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case 10 .

[0071] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box body 10 by fixing the battery module in the box body 10 .

[0072] As an example, the battery cell assembly may also be accommodated in the case 10 by directly fixing the plurality of battery cells 20 to the case 10 .

[0073] In the battery device 100, there may be multiple battery cells 20, and the multiple battery cells 20 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 20 are both connected in series and in parallel. The multiple battery cells 20 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 20 is accommodated in the box 10; of course, the battery device 100 may also be a battery module formed by connecting multiple battery cells 20 in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 10. The battery device 100 may also include other structures, for example, the battery device 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 20.

[0074] Each battery cell 20 may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.

[0075] Reference Figure 3-Figure 7 According to some embodiments of the present application, the present application provides a battery device 100, including a box body 10, a busbar assembly 30 arranged in the box body 10 and a plurality of battery cells 20, each battery cell 20 including an explosion-proof valve 201 and an electrode terminal 202, the busbar assembly 30 including a substrate 2, a busbar 3 and a sampling piece 4; the substrate 2 is provided with a first avoidance hole 21 for avoiding the explosion-proof valve 201, and a second avoidance hole 22 for avoiding the electrode terminal 202, the side of the substrate 2 facing the battery cell 20 is bonded to the plurality of battery cells 20; the busbar 3 is arranged on one side of the substrate 2, the electrode terminal 202 extends into the second avoidance hole 22 and is electrically connected to the busbar 3; the sampling piece 4 is arranged on the side of the substrate 2 away from the battery cell 20, and the sampling piece 4 is electrically connected to the busbar 3.

[0076] The box body 10 includes a box body 12 and an upper cover 11. The upper cover 11 covers the opening of the box body 12. The opening is arranged on the side of the accommodating cavity 1 of the box body 10 facing the upper cover 11 and communicates with the accommodating cavity 1. The plurality of battery cells 20 can be arranged in a plurality of rows, and each row of battery cells 20 is arranged along a first direction. The first direction is as follows: Figure 3 The X in the figure indicates the direction. The busbar 3 can be an adapter plate, such as an aluminum adapter plate or a copper adapter plate, and the busbar 3 is used to electrically connect the electrode terminal 202 and the sampling piece 4. Among them, the electrode terminal 202 is the positive electrode or negative electrode of the battery cell 20, and the sampling piece 4 can be a flexible circuit board. The flexible circuit board also extends along the first direction. The busbar 3 is arranged on both sides of the flexible circuit board. The busbar 3 is used to transmit the current signal of the electrode terminal 202 of each battery cell 20 to the sampling piece 4 to realize signal collection. The explosion-proof valve 201 is also the exhaust valve of the battery cell 20, which is used to discharge the gas inside the battery cell 20 in time when thermal runaway occurs, so as to reduce the risk of explosion of the battery cell 20. In the above embodiment of the present application, the busbar assembly 30 includes a substrate 2, a busbar 3 and a sampling piece 4. A first avoidance hole 21 for avoiding the explosion-proof valve 201 and a second avoidance hole 22 for avoiding the electrode terminal 202 are set on the substrate 2. In this way, the explosion-proof valve 201 can extend from the first avoidance hole 21 to ensure that the exhaust is not blocked by the substrate 2. The electrode terminal 202 can extend into the second avoidance hole 22 and be electrically connected to the busbar 3. The substrate 2, busbar 3 and sampling piece 4 of the busbar assembly 30 are integrated into a whole, which can simplify the installation process of the busbar 3 and the sampling piece 4, improve the composition efficiency, and improve the overall structural strength of the battery device 100. Furthermore, the side of the substrate 2 facing the battery cell 20 is bonded together, so that the busbar assembly 30 and the battery cell 20 are installed together as a whole. During use, the possibility of loosening between the substrate 2 and the battery cell 20 can be reduced, and the overall structural strength of the battery device 100 can be improved. Regarding bonding, liquid glue or solid glue can be used for bonding.

[0077] By integrating the sampling piece 4 and the busbar piece 3 on the substrate 2 and arranging them on the side of the substrate 2 facing away from the battery cell 20, the side of the substrate 2 facing the battery cell 20 is bonded to multiple battery cells 20, and the battery cell 20 and the busbar assembly 30 are formed into a whole, the possibility of loosening between the battery cell 20 and the substrate 2 during vibration can be reduced, which is beneficial to improving the overall structural strength of the battery device 100, and thus improving the main frequency of the battery device 100.

[0078] In some embodiments, the busbar 3 is disposed on a side of the substrate 2 facing away from the battery cell 20 .

[0079] Regarding the installation position of the busbar 3, the busbar 3 can be arranged on the side of the substrate 2 facing the battery cell 20, that is, the bottom of the substrate 2. Of course, it can also be arranged on the side of the substrate 2 away from the battery cell 20, that is, the top of the substrate 2. In this embodiment, the busbar 3 and the sampling piece 4 are both arranged on the side of the substrate 2 away from the battery cell 20, which is convenient for the connection between the busbar 3 and the sampling piece 4, and convenient for the substrate 2 to be bonded with multiple battery cells 20.

[0080] By arranging the busbar 3 on the side of the substrate 2 away from the battery cell 20 , it is convenient to bond the substrate 2 to the battery cell 20 and also convenient to connect the busbar 3 to the sampling member 4 .

[0081] Reference Figure 7 and Figure 8 In some embodiments, a groove 23 is provided on the side of the substrate 2 facing the battery cell 20, the groove 23 includes a groove bottom wall 231 and a groove side wall 232 surrounding the groove bottom wall 231, the first avoidance hole 21 is arranged through the groove bottom wall 231, the explosion-proof valve 201 passes through the groove 23 and extends into the first avoidance hole 21, and the groove side wall 232 is arranged around the periphery of the explosion-proof valve 201.

[0082] The groove 23 is formed by the substrate 2 being recessed toward the side away from the battery cell 20. The groove 23 includes a groove bottom wall 231 and a groove side wall 232 surrounding the groove bottom wall 231. The groove side wall 232 is actually a side enclosure. The groove bottom wall 231 and the groove side wall 232 are surrounded to form an accommodation space. The first avoidance hole 21 is a through hole, which is set from one side of the groove bottom wall 231 through the substrate 2, so that the explosion-proof valve 201 can extend into the first avoidance hole 21 from the accommodation space passing through the groove 23. Since the explosion-proof valve 201 is arranged on the top surface 203 of the battery cell 20, the opening of the groove 23 is arranged on the battery cell 20. At this time, after the explosion-proof valve 201 passes through the groove 23, the groove side wall 232 of the groove 23 can abut against the top surface 203 of the battery cell 20, and the groove side wall 232 can be designed to be compatible with the explosion-proof valve 201. In this way, the groove side wall 232 can be arranged around the outer periphery of the explosion-proof valve 201 and abut against the top surface 203 of the battery cell 20, so that the explosion-proof valve 201 is surrounded in the accommodation space. Because the substrate 2 and the battery cell 20 are bonded together, specifically, the explosion-proof valve 201 can be arranged in the groove 23 and the groove side wall 232 abuts against the battery cell 20 by gluing, the risk of glue flowing to the explosion-proof valve 201 during the bonding process can be reduced by the blocking effect of the groove side wall 232, and the normal exhaust function of the explosion-proof valve 201 can be guaranteed as much as possible.

[0083] By setting a groove 23 on the side of the substrate 2 facing the battery cell 20, the opening of the groove 23 is covered on the battery cell 20, and the explosion-proof valve 201 extends from the groove 23 into the first avoidance hole 21. The groove side wall 232 of the groove 23 is abutted against the top surface 203 of the battery cell 20 to cover the explosion-proof valve 201 in the groove 23, which can reduce the possibility of glue flowing to the explosion-proof valve 201 during the bonding process, thereby reducing the risk of failure of the explosion-proof valve 201.

[0084] Reference Figure 8 In some embodiments, the projection area of ​​the first avoidance hole 21 on the groove bottom wall 231 is smaller than the surface area of ​​the groove bottom wall 231 ; in a direction perpendicular to the central axis of the first avoidance hole 21 , there is a gap between the first avoidance hole 21 and the groove side wall 232 .

[0085] There is a gap between the first avoidance hole 21 and the groove side wall 232, and the gap is actually the remaining part of the groove bottom wall 231. Figure 8 The width of the groove bottom wall 231 portion referred to in the figure. The projection of the first avoidance hole 21 on the groove bottom wall 231 refers to the projection of the first avoidance hole 21 on the plane where the groove bottom wall 231 is located, and the projection area refers to the size of the area of ​​the obtained projection, that is, the cross-sectional area of ​​the first avoidance hole 21. The surface area of ​​the groove bottom wall 231 refers to the surface area of ​​the surface on which the first avoidance hole 21 is projected. A cross section can be made in the direction perpendicular to the central axis of the first avoidance hole 21. It can be seen from this cross section that there is a gap between the first avoidance hole 21 and the groove side wall 232. The explosion-proof valve 201 extends from the first avoidance hole 21, and its size is generally smaller than the first avoidance hole 21. Then there is also a gap between the explosion-proof valve 201 and the groove side wall 232, so that it is convenient for the explosion-proof valve 201 to pass through the accommodating space of the groove 23 and extend out of the first avoidance hole 21, reducing the possibility of interference between the explosion-proof valve 201 and the groove side wall 232 during installation. In a specific embodiment, the groove 23 is a cylindrical groove, and the first avoidance hole 21 is a circular hole, that is, the diameter of the circular hole is smaller than the diameter of the inner circle of the groove 23, and, generally speaking, the central axes of the first avoidance hole 21 and the groove 23 are arranged to overlap.

[0086] A gap is provided between the first avoidance hole 21 and the groove side wall 232, and the projection of the first avoidance hole 21 on the groove bottom wall 231 is smaller than the surface area of ​​the groove bottom wall 231. The size of the groove side wall 232 is designed to be larger than the first avoidance hole 21, so that the explosion-proof valve 201 can pass through the groove 23 and extend into the first avoidance hole 21, thereby reducing the possibility of interference and facilitating assembly.

[0087] In some embodiments, a retaining ring is disposed on one side of the substrate 2 facing the battery cell 20 , the retaining ring is disposed around the outer circumference of the first avoidance hole 21 , and the explosion-proof valve 201 passes through the retaining ring and extends into the first avoidance hole 21 .

[0088] The aforementioned groove 23 is formed by an inward depression from the substrate 2. In this embodiment, the retaining ring can be an extension extending from the substrate 2, extending from the side of the substrate 2 toward the battery cell 20, and is arranged around the outer periphery of the opening of the first avoidance hole 21. As for the shape of the retaining ring, it can be cylindrical or square, or it can be an irregular shape, but it is generally set as a complete side enclosure. One side of the retaining ring is connected to the substrate 2, and the other side is used to abut against the battery cell 20. When the substrate 2 is placed on the battery cell 20, the explosion-proof valve 201 passes through the retaining ring and extends into the first avoidance hole 21. The explosion-proof valve 201 is arranged in the cavity formed by the retaining ring to play an isolation role. In this way, when a colloid is used to bond the substrate 2 and multiple battery cells 20, the retaining ring can prevent the glue from flowing to the position of the explosion-proof valve 201, reducing the possibility of failure of the explosion-proof valve 201.

[0089] By arranging a retaining ring on the outer periphery of the first avoidance hole 21, the retaining ring abuts against the battery cell 20 to isolate the explosion-proof valve 201 in the cavity of the retaining ring, thereby reducing the risk of glue flowing into the explosion-proof valve 201, that is, reducing the possibility of smoke exhaust failure caused by the explosion-proof valve 201 being adhered to the glue.

[0090] Reference Figure 6 and Figure 7 In some embodiments, the substrate 2 covers a plurality of battery cells 20 , and a side baffle plate 6 is provided on the side of the substrate 2 facing the battery cells 20 . The side baffle plate 6 is provided along the outer edge of the substrate 2 , and the side baffle plate 6 abuts against the battery cells 20 located at the periphery of the plurality of battery cells 20 .

[0091] The retaining ring or groove 23 in the above-mentioned embodiments is to prevent the glue used for bonding from flowing to the position of the explosion-proof valve 201 as much as possible. The side enclosure baffle 6 in this embodiment is mainly to prevent the glue from flowing out from the outside of the multiple battery cells 20 and flowing into the accommodating cavity 1 of the box body 10 as much as possible. Specifically, the side enclosure baffle 6 is arranged on the substrate 2 and is arranged around the outer edge of the substrate 2. If the substrate 2 is square, the side enclosure baffle 6 is a square frame. One side of the side enclosure baffle 6 is arranged on the substrate 2, and the other side abuts against the battery cell 20 located in the outermost circle among the multiple battery cells 20, specifically abuts against the top surface 203 of the battery cell 20 located in the outermost circle. The side enclosure baffle 6 forms an isolated side enclosure circle to play an isolation role, so that the glue is not easy to flow from the top surface 203 of the battery cell 20 to other positions in the box body 10, such as flowing to the position of the electrical components, or causing unnecessary wiring harness bonding.

[0092] By setting a side baffle 6 on the substrate 2 to abut against the battery body, specifically the battery baffle is set at the outer edge of the substrate 2 and abuts against the battery cells 20 located at the periphery among the multiple battery cells 20, the risk of glue flowing from the periphery of the battery body into the box 10 can be reduced.

[0093] Reference Figure 7 In some embodiments, a rib 5 is provided on a side of the substrate 2 facing the battery cell 20 .

[0094] The ribs 5 are protruding sections arranged on the base plate 2 . There can be multiple ribs 5 , which can be arranged in parallel, inclined, or in other arrangements. The ribs 5 mainly play a reinforcing role and are used to improve the strength of the base plate 2 .

[0095] By providing the ribs 5 on the base plate 2, the strength of the base plate 2 can be improved, and the base plate 2 is not easily deformed during use.

[0096] Reference Fig. 9 and Fig.10 In some embodiments, a clamping piece is provided on the substrate 2, and the busbar 3 is clamped with the clamping piece.

[0097] The busbar 3 can be installed on the substrate 2. Specifically, the substrate 2 can be first bonded to the battery cell 20, and then the busbar 3 can be snapped onto the substrate 2. Alternatively, the busbar 3 can be snapped onto the substrate 2, and then the substrate 2 with the busbar 3 installed can be installed onto the battery cell 20. In the actual manufacturing process of the battery device 100, a plurality of busbars 3 are arranged on a substrate 2. For ease of operation, a plurality of busbars 3 and a sampling component 4 can be first installed on the substrate 2 to form a busbar assembly 30, and then the entire busbar assembly 30 can be directly installed on the battery cell 20, thereby improving assembly efficiency and reducing assembly difficulty. The snap-on method is adopted for easy installation and replacement.

[0098] By arranging a clamping piece on the substrate 2 and clamping the current collector 3 to the substrate 2, installation and disassembly can be facilitated.

[0099] Reference Fig.10 In some embodiments, the snap-fit ​​component includes a first snap-fit ​​7 and a second snap-fit ​​8, and the busbar 3 is provided with a first snap-fit ​​and a second snap-fit; the first snap-fit ​​7 is snap-fitted with the first snap-fit, and the second snap-fit ​​8 is snap-fitted with the second snap-fit.

[0100] The first clip 7 and the second clip 8 can be protrusions provided on the substrate 2, and the first and second clips can be slots provided on the busbar 3. The first clip 7 is detachably connected to the first clip, and the second clip 8 is detachably connected to the second clip, so that the busbar 3 can be snapped in from two positions.

[0101] By setting two clips on the substrate 2, two snap sockets are respectively set at the positions of the busbar 3 corresponding to the two clips, the first clip 7 is connected to the first snap socket, and the second clip 8 is snapped with the second snap socket. The busbar 3 is snapped from two positions, which can improve the reliability of the snapping and the connection strength, which is beneficial to improving the strength of the entire battery device 100.

[0102] In some embodiments, the first buckle 7 is a dead buckle, and the second buckle 8 is a movable buckle; or, the first buckle 7 is a movable buckle, and the second buckle 8 is a dead buckle.

[0103] A dead buckle refers to a fixed buckle that cannot undergo elastic deformation. It has good reliability and can also play a positioning role. A live buckle refers to a buckle that can undergo elastic deformation. When it is engaged with the bayonet, it deforms itself. The restoring force accumulated during the deformation process can make the buckle and the bayonet tightly engaged. Since it can deform and engage, it can improve the flexibility and convenience of the engagement.

[0104] By configuring the snap connector to be a combination of a dead snap and a live snap, the flexibility and convenience of the connection can be improved while ensuring the reliability of the connection.

[0105] Reference Fig.10 In some embodiments, a mounting groove 9 is provided on the side of the substrate 2 facing away from the battery cell 20, a second avoidance hole 22 is provided through the bottom surface of the mounting groove 9, the busbar 3 is provided in the mounting groove 9, and a first buckle 7 and a second buckle 8 are provided on the side wall of the mounting groove 9.

[0106] The side of the substrate 2 facing away from the battery cell 20 is also the side of the substrate 2 facing the upper cover 11 of the box body 10. The mounting groove 9 is a concave groove, and the busbar 3 can be set in the mounting groove 9, which can reduce the space occupied by the box body 10 and protect the busbar 3. Specifically, because the busbar 3 needs to be connected to the electrode terminal 202 of the battery cell 20, the second avoidance hole 22 can be set to pass through the bottom surface of the mounting groove 9, so that the electrode terminal 202 can pass through the second avoidance hole 22 or the bottom surface of the mounting groove 9 to be electrically connected to the busbar 3 set in the mounting groove 9. Of course, in order to facilitate the snap connection with the busbar 3, the first buckle 7 and the second buckle 8 can be set on the side wall of the mounting groove 9.

[0107] By providing the mounting groove 9 on the substrate 2 for mounting the busbar 3 , the internal space of the battery device 100 can be saved and the volume energy density of the battery device 100 can be improved.

[0108] Reference Fig.10 In some embodiments, a plurality of mounting grooves 9 are provided on the substrate 2, each mounting groove 9 corresponds to a collector 3 and a clip, and two second avoidance holes 22 are provided in each mounting groove 9. The two second avoidance holes 22 are arranged along the length direction of the collector 3, and the first clip 7 and the second clip 8 are respectively arranged on both sides of the collector 3 along the length direction.

[0109] Generally speaking, a plurality of sampling components 4, that is, a plurality of flexible circuit boards, are provided on the substrate 2. Along the length direction of the flexible circuit board, that is, the first direction, a plurality of busbars 3 are provided on both sides of each flexible circuit board for respectively collecting electrical signals on a plurality of battery cells 20. A first busbar 3 is provided in each mounting slot 9. Since a plurality of busbars 3 are required, a plurality of mounting slots 9 are provided. A clamping component connected to the busbar 3 is provided in each mounting slot 9. The clamping component includes a first buckle 7 and a second buckle 8. Furthermore, since a battery cell 20 includes two electrode terminals 202, namely, a positive electrode and a negative electrode, two second avoidance holes 22 are actually required to be provided in each mounting slot 9. The two second avoidance holes 22 are provided on both sides of the length direction of the busbar 3, and two buckles are also provided on both sides of the length direction of the busbar 3.

[0110] By setting a plurality of mounting grooves 9 on the substrate 2, a snap-in component is set in each mounting groove 9 for mounting a busbar 3, and two second avoidance holes 22 are set at the bottom of each mounting groove 9 for two electrode terminals 202 to pass through. Two snaps are respectively set on both sides of the length direction of the busbar 3 to install the busbar 3 in the mounting groove 9, which can save the installation space of the battery device 100 and is beneficial to improving the volume energy density.

[0111] Reference Fig.11 In some embodiments, the first clip 7 includes a fixing plate 71 and a first clipping end 72 arranged on the fixing plate 71, and the fixing plate 71 is connected to the side wall; the second clip 8 includes an elastic plate 81 that can undergo elastic deformation and a second clipping end 82 arranged at the end of the elastic plate 81, the first clipping end 72 is clipped with the first clip, and the second clipping end 82 is clipped with the second clip.

[0112] Among the two buckles, one buckle is fixed and can be called a dead buckle; the other buckle is movable and can be deformed, which can be called a live buckle. Specifically, the first buckle 7 is a dead buckle, and the first buckle 7 includes a fixed plate 71 and a first clamping end 72, and the fixed plate 71 and the first clamping end 72 cannot move. The second buckle 8 includes an elastic plate 81 and a second clamping end 82, and the elastic plate 81 can be elastically deformed. When clamping the busbar 3, the first bayonet is first installed on the first clamping end 72, and then the elastic plate 81 is deformed by squeezing to clamp the second bayonet on the second clamping end 82. Specifically, the first clamping end 72 can be set at the middle position of the fixed plate 71, and the reliability of the fixed connection using a dead buckle is higher. The second clamping end 82 can be set at the end position of the elastic plate 81, and the use of one or a buckle can facilitate the clamping of the second bayonet with the second clamping end 82.

[0113] By providing a fixed first buckle 7 and a movable second buckle 8, the advantages of convenient connection of the busbar 3 and secure connection can be achieved.

[0114] In some embodiments, the snap-fit ​​component includes a first snap-fit ​​socket and a second snap-fit ​​socket, and the busbar 3 is provided with a first snap-fit ​​7 and a second snap-fit ​​8 ; the first snap-fit ​​7 is snap-fitted with the first snap-fit ​​socket, and the second snap-fit ​​8 is snap-fitted with the second snap-fit ​​socket.

[0115] Of course, a recessed slot may be provided on the connector, and a protruding end may be provided on the collector 3 to form a buckle, and the collector 3 may be connected to the substrate 2 by engaging the two buckles with the two bayonet ports.

[0116] By setting two snap-ons on the substrate 2, two snaps are respectively set at the positions of the busbar 3 corresponding to the two snaps, the first snap 7 is docked with the first snap, and the second snap 8 is snapped with the second snap. The busbar 3 is snapped from two positions, which can improve the reliability of the snapping and the connection strength, which is beneficial to improving the strength of the entire battery device 100.

[0117] According to some embodiments of the present application, the present application provides an electrical device, including a box body 10, a busbar assembly 30 arranged in the box body 10 and a plurality of battery cells 20, each battery cell 20 including an explosion-proof valve 201 and an electrode terminal 202, the busbar assembly 30 including a substrate 2, a busbar 3 and a sampling piece 4; the substrate 2 is provided with a first avoidance hole 21 for avoiding the explosion-proof valve 201, and a second avoidance hole 22 for avoiding the electrode terminal 202, the side of the substrate 2 facing the battery cell 20 is bonded to the plurality of battery cells 20; the busbar 3 is arranged on the side of the substrate 2 away from the battery cell 20, the electrode terminal 202 extends into the second avoidance hole 22 and is electrically connected to the busbar 3; the sampling piece 4 is arranged on the side of the substrate 2 away from the battery cell 20, and the sampling piece 4 is electrically connected to the busbar 3. In order to reduce the risk of glue flowing to the explosion-proof valve 201 during the bonding process, the following two implementations can be adopted. In the first implementation, a groove 23 is provided on the side of the substrate 2 facing the battery cell 20. The groove 23 includes a groove bottom wall 231 and a groove side wall 232 surrounding the groove bottom wall 231. The first avoidance hole 21 is arranged through the groove bottom wall 231, the explosion-proof valve 201 extends into the first avoidance hole 21, and the groove side wall 232 is arranged around the periphery of the explosion-proof valve 201. The projection area of ​​the first avoidance hole 21 on the groove bottom wall 231 is smaller than the surface area of ​​the groove bottom wall 231; in the direction perpendicular to the central axis of the first avoidance hole 21, there is a gap between the first avoidance hole 21 and the groove side wall 232. In the second implementation, a retaining ring is provided on the side of the substrate 2 facing the battery cell 20. The retaining ring is arranged around the outer periphery of the first avoidance hole 21, and the explosion-proof valve 201 extends into the first avoidance hole 21 through the retaining ring.

[0118] In addition, in order to reduce the risk of glue flowing from the periphery of the battery cell 20 to the box body 10, a side baffle plate 6 can be provided on the side of the base plate 2 facing the battery cell 20. The side baffle plate 6 is provided along the outer edge of the base plate 2 and abuts against the battery cells 20 located at the periphery of the plurality of battery cells 20. Ribs 5 can also be provided on the side of the base plate 2 facing the battery cell 20 to play a reinforcing role.

[0119] In order to facilitate the installation of the busbar 3 and the substrate 2, they can be installed in a snap-fit ​​manner.

[0120] In one embodiment, a snap connector is provided on the substrate 2, and the snap connector includes a first snap connector 7 and a second snap connector 8. A first snap connector and a second snap connector are provided on the busbar 3; the first snap connector 7 is snapped with the first snap connector, and the second snap connector 8 is snapped with the second snap connector. A mounting groove 9 is provided on the side of the substrate 2 facing away from the battery cell 20, and a second avoidance hole 22 is provided through the bottom surface of the mounting groove 9. The busbar 3 is provided in the mounting groove 9, and the first snap connector 7 and the second snap connector 8 are provided on the side wall of the mounting groove 9. Specifically, a plurality of mounting grooves 9 are provided on the substrate 2, and each mounting groove 9 is correspondingly provided with a busbar 3 and a snap connector, and each mounting groove 9 is provided with two second avoidance holes 22, and the two second avoidance holes 22 are arranged along the length direction of the busbar 3, and the first snap connector 7 and the second snap connector 8 are respectively provided on both sides of the busbar 3 along the length direction. The first clip 7 includes a fixing plate 71 and a first clipping end 72 arranged on the fixing plate 71, and the fixing plate 71 is connected to the side wall; the second clip 8 includes an elastic plate 81 that can undergo elastic deformation and a second clipping end 82 arranged at the end of the elastic plate 81, the elastic plate 81 is connected to the side wall, the first clipping end 72 is clipped with the first clip, and the second clipping end 82 is clipped with the second clip.

[0121] In another embodiment, the snap-fit ​​component includes a first snap-fit ​​socket and a second snap-fit ​​socket, and the busbar 3 is provided with a first snap-fit ​​7 and a second snap-fit ​​8 ; the first snap-fit ​​7 is snap-fitted with the first snap-fit ​​socket, and the second snap-fit ​​8 is snap-fitted with the second snap-fit ​​socket.

[0122] According to some embodiments of the present application, the present application provides an electric device, which includes an equipment body 400 and the above-mentioned battery device 100, and the battery device 100 is arranged in the equipment body 400. The above-mentioned electric device can be a vehicle 1000. Since the electric device includes any technical solution of all the above-mentioned embodiments, it has at least all the beneficial effects brought by any of the above-mentioned technical solutions, which will not be repeated here one by one.

[0123] The above description is only an optional embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the application concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A battery device, characterized in that: It comprises a box body, a busbar assembly arranged in the box body and a plurality of battery cells, each of the battery cells comprises an explosion-proof valve and an electrode terminal, and the busbar assembly comprises: A substrate, wherein a first avoidance hole for avoiding the explosion-proof valve and a second avoidance hole for avoiding the electrode terminal are provided on the substrate, and a side of the substrate facing the battery cells is bonded to the plurality of battery cells; A busbar, wherein the busbar is disposed on one side of the substrate, and the electrode terminal extends into the second avoidance hole and is electrically connected to the busbar; A sampling piece is arranged on a side of the substrate away from the battery cell, and the sampling piece is electrically connected to the current collector.

2. The battery device according to claim 1, characterized in that A groove is provided on the side of the substrate facing the battery cell, the groove includes a groove bottom wall and a groove side wall surrounding the groove bottom wall, the first avoidance hole is provided through the groove bottom wall, the explosion-proof valve passes through the groove and extends into the first avoidance hole, and the groove side wall is provided around the periphery of the explosion-proof valve.

3. The battery device according to claim 2, characterized in that: The projection area of ​​the first avoidance hole on the groove bottom wall is smaller than the surface area of ​​the groove bottom wall; in a direction perpendicular to the central axis of the first avoidance hole, there is a gap between the first avoidance hole and the groove side wall.

4. The battery device according to claim 1, characterized in that: A retaining ring is arranged on a side of the substrate facing the battery cell, the retaining ring is arranged around the outer circumference of the first avoidance hole, and the explosion-proof valve passes through the retaining ring and extends into the first avoidance hole.

5. The battery device according to claim 1, wherein: The substrate covers a plurality of battery cells. A side baffle is provided on a side of the substrate facing the battery cells. The side baffle is provided along an outer edge of the substrate and abuts against the battery cells located at the periphery of the plurality of battery cells.

6. The battery device according to any one of claims 1 to 5, characterized in that: A clamping piece is arranged on the substrate, and the current collector is clamped with the clamping piece.

7. The battery device according to claim 6, characterized in that: The clamping member includes a first clamp and a second clamp, and the current collector is provided with a first bayonet and a second bayonet; the first clamp is clamped with the first bayonet, and the second clamp is clamped with the second bayonet.

8. The battery device according to claim 7, characterized in that: A mounting groove is arranged on a side of the substrate away from the battery cell, the second avoidance hole is arranged through the bottom surface of the mounting groove, the collector is arranged in the mounting groove, and the first clip and the second clip are arranged on the side wall of the mounting groove.

9. The battery device according to claim 8, characterized in that: A plurality of the mounting grooves are arranged on the substrate, each of the mounting grooves corresponds to a collector and a clip, two second avoidance holes are arranged in each of the mounting grooves, the two second avoidance holes are arranged along the length direction of the collector, and the first clip and the second clip are respectively arranged on both sides of the collector along the length direction.

10. The battery device according to claim 8, characterized in that The first clip includes a fixing plate and a first clipping end arranged on the fixing plate, and the fixing plate is connected to the side wall; the second clip includes an elastic plate capable of elastic deformation and a second clipping end arranged on the end of the elastic plate, the elastic plate is connected to the side wall, the first clipping end is clipped with the first clip, and the second clipping end is clipped with the second clip.

11. The battery device according to claim 7, characterized in that: The first buckle is a fixed buckle, and the second buckle is a movable buckle; or, The first buckle is a movable buckle, and the second buckle is a fixed buckle.

12. The battery device according to claim 6, characterized in that: The clamping member includes a first clamping port and a second clamping port, and the current collector is provided with a first buckle and a second buckle; the first buckle is clamped with the first clamping port, and the second buckle is clamped with the second clamping port.

13. The battery device according to any one of claims 1 to 5, characterized in that: The current collector is disposed on a side of the substrate facing away from the battery cell.

14. The battery device according to any one of claims 1 to 5, characterized in that: A rib is arranged on a side of the substrate facing the battery cell.

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

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