Battery, electric device and method for manufacturing battery

Abstract

The present application provides a battery, an electrical device and a method for manufacturing a battery, wherein the battery comprises a battery cell, a box and a separator. The box comprises an outer frame, the outer frame is used to form a receiving cavity, and the battery cell is received in the receiving cavity. The separator is connected to the box, and at least part of the separator is located between the outer frame and the battery cell, so that there is a gap between the outer frame and the battery cell. The technical solution provided by the present application can solve the problem of fire and explosion of the battery when it is collided or squeezed.

Description

Technical Field

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

[0002] In recent years, new energy vehicles have developed by leaps and bounds. In the field of electric vehicles, batteries, as the power source of electric vehicles, play an irreplaceable and important role. At present, the mechanical safety of batteries during use is one of the battery safety issues that consumers generally care about.

[0003] During the actual use of the battery, the battery will be affected by various complex usage environments. In particular, when a collision or extrusion occurs, the external force will affect the battery performance and affect the normal use of the battery. Summary of the invention

[0004] In view of the above problems, the present application provides a battery, an electrical device and a method for manufacturing a battery, so as to solve the problem that the battery performance is affected when the battery is collided or squeezed.

[0005] To solve the above problems, an embodiment of the present application provides a battery, including a battery cell, a box and a separator. The box includes an outer frame, the outer frame is used to form a receiving cavity, and the battery cell is received in the receiving cavity. The separator is connected to the box, and at least part of the separator is located between the outer frame and the battery cell, so that there is a gap between the outer frame and the battery cell.

[0006] In the embodiment of the present application, the separator is connected to the box body, and at least a part of the separator is placed between the outer frame and the battery cell, so that the outer frame and the battery cell are arranged at a distance, thereby ensuring that there is a gap between the battery cell and the outer frame.

[0007] When the battery is hit or squeezed, the gap between the battery cell and the outer frame can be used as an energy absorption space, which can buffer the force generated by the collision, thereby reducing the force directly acting on the battery cell. At the same time, the gap between the battery cell and the frame can also be used to accommodate the deformation of the outer frame caused by collision or squeezing, and prevent the deformed outer frame from directly squeezing or puncturing the battery cell. This reduces the force and damage to the battery cell. Therefore, by setting this gap, the risk of safety problems such as fire and explosion of the battery when the battery is hit or squeezed can be reduced.

[0008] According to some embodiments of the present application, the separator has a separator, the separator is located between the battery cell and the outer frame, and the separator is spaced apart from the battery cell.

[0009] In the embodiment of the present application, by arranging the partition part and the battery cell at intervals, when the partition part is collided or squeezed, a deformation space is provided for the partition part, thereby protecting the battery cell.

[0010] According to some embodiments of the present application, a plurality of battery cells are provided, and the plurality of battery cells are stacked to form a battery pack. The battery further includes an end plate located at an end of the battery pack along a stacking direction, the end plate is fixedly connected to the battery pack, and the partition abuts against the end plate.

[0011] In the embodiment of the present application, the battery assembly efficiency can be improved by stacking battery cells to form a battery pack. An end plate is provided at the end of the battery pack, and the partition and the end plate abut against each other to prevent the partition from directly abutting against the battery cell and causing damage to the battery cell.

[0012] According to some embodiments of the present application, the end plate includes a main body portion and a protruding portion connected to the main body portion and protruding toward the outer frame, and the partition portion abuts against the protruding portion.

[0013] In the embodiment of the present application, by providing a protrusion on the end plate protruding from the battery cell and making the partition abut against the protrusion, the partition can be prevented from directly contacting the battery cell, thereby preventing the battery cell from being subjected to force and further protecting the battery cell.

[0014] According to some embodiments of the present application, the surface of the protrusion facing the partition portion includes an abutment surface and an inclined surface, the abutment surface abuts against the partition portion, and the inclined surface is connected to the abutment surface and is inclined toward the main body portion.

[0015] In the embodiment of the present application, the abutting surface abuts against the surface of the partition, and the inclined surface connects the protrusion and the main body, so that the force exerted on the protrusion is evenly transmitted to the main body. At the same time, it can also increase the structural strength of the protrusion and reduce the possibility of deformation of the protrusion, thereby protecting the battery cell.

[0016] According to some embodiments of the present application, the partition member further includes a mounting portion, the mounting portion is connected to the partition portion, and the mounting portion is fixedly connected to the box body.

[0017] In the embodiment of the present application, a mounting portion is provided so that the partition is connected to the box body through the mounting portion, thereby facilitating the installation of the partition.

[0018] According to some embodiments of the present application, the battery further includes a fastener, the mounting portion includes at least one mounting hole, and at least a portion of the fastener penetrates into the mounting hole to fixedly connect the mounting portion to the box body.

[0019] In the embodiment of the present application, fasteners are provided to pass through the mounting holes of the mounting portion so that the partition is fixedly connected to the box body, thereby making the connection between the partition and the box body more reliable and improving the assembly efficiency.

[0020] According to some embodiments of the present application, the mounting hole is connected with an insert, the insert is made of a metal material, the insert has a through hole, and at least a portion of the fastener penetrates into the through hole to fix the mounting portion to the box body.

[0021] In the embodiment of the present application, the structural strength of the mounting portion can be enhanced by providing an insert, and the mounting portion can be prevented from being crushed during the fastening process of the fastener. During the use of the battery, the connection reliability between the mounting portion and the box body can also be improved.

[0022] According to some embodiments of the present application, the mounting portion includes a mounting groove, and the end of the fastener is accommodated in the mounting groove.

[0023] In the embodiment of the present application, the end of the fastener is sunk into the separator to prevent the end of the fastener from protruding out of the separator and occupying the internal space of the battery, thereby improving the energy density of the battery.

[0024] According to some embodiments of the present application, the mounting portion further includes a first protrusion, which protrudes from the partition portion toward the accommodating cavity, the mounting groove extends into the first protrusion, and the end of the fastener is at least partially accommodated in the first protrusion.

[0025] In the embodiment of the present application, by providing a first protrusion locally on the partition for mounting the end of the fastener, the influence of the size of the end of the fastener on the position of the partition can be reduced.

[0026] According to some embodiments of the present application, one of the mounting portion and the box body is provided with a slot, and the other is provided with a connecting portion, and the slot is connected to the connecting portion to connect the partition and the box body.

[0027] In the embodiment of the present application, by providing the card slot, the connection area with the box body can be increased, making the connection more reliable. In addition, the card slot can be used for position limiting to prevent the partition from rotating, thereby improving assembly efficiency.

[0028] According to some embodiments of the present application, one of the mounting portion and the box body is provided with a limiting structure, and the other is provided with a limiting structure matching portion, and the limiting structure is inserted into the limiting structure matching portion to connect the partition and the box body.

[0029] In the embodiment of the present application, by providing a limiting structure and a limiting structure matching part, the partition is fixedly connected to the box body, so that the connection between the partition and the box body is more reliable and the assembly efficiency is improved.

[0030] According to some embodiments of the present application, the mounting portion is detachably connected to the box body.

[0031] In the embodiment of the present application, by providing a detachable connection, the separator can be reused.

[0032] According to some embodiments of the present application, the box body further includes a beam disposed in the accommodating cavity, the beam is connected to the outer frame, and the mounting portion is connected to an end of the beam close to the outer frame.

[0033] In the embodiment of the present application, the partition is fixed on the beam through the mounting portion, and the beam provides an installation space for the partition, making it more convenient to fix the partition on the box body.

[0034] According to some embodiments of the present application, the beam is used to divide the accommodating cavity into at least two sub-accommodating cavities, which are used to accommodate at least one battery cell. The partition includes two partitions located on both sides of the beam, and the two partitions are respectively spaced apart from the battery cells in two adjacent sub-accommodating cavities.

[0035] In the embodiment of the present application, the battery cells on both sides of the beam can be positioned by the separator, which saves parts and improves assembly efficiency. At the same time, the battery cells on both sides can be positioned by the separator to unify the positioning reference of the battery cells, which is more conducive to the consistency of the entire battery.

[0036] According to some embodiments of the present application, the mounting portion is disposed between the two partitioning portions, and the mounting portion is fixedly connected to the beam.

[0037] In the embodiment of the present application, by setting the installation part in the middle of two partitions, one partition can be integrated with more than one partition, thereby improving the integration of parts; multiple partitions share one installation point, thereby improving the consistency of positioning points; at the same time, it also saves installation steps and improves assembly efficiency.

[0038] According to some embodiments of the present application, the partition further includes an abutment portion, which abuts against the outer frame.

[0039] In the embodiment of the present application, the rotation of the partition can be limited by the abutment between the abutment portion and the outer frame, thereby avoiding the complex design of the installation portion, saving the cost of parts and components and improving the assembly efficiency.

[0040] According to some embodiments of the present application, the separator further includes oblique ribs, which are inclined along a direction of the battery cells toward the separator.

[0041] In the embodiment of the present application, the oblique ribs can disperse the external forces, protect the battery cells, and thus reduce the risk of safety accidents.

[0042] According to some embodiments of the present application, the separator has a separator, the separator is located between the outer frame and the battery cell, the separator is spaced apart from the battery cell, and the oblique rib is connected to the separator.

[0043] In the embodiment of the present application, when subjected to external force, the external force transmitted to the partition is dispersed, thereby protecting the battery cells and further reducing the risk of safety accidents.

[0044] According to some embodiments of the present application, there are at least two oblique ribs, each of which is connected to the partition.

[0045] In the embodiment of the present application, by setting more than two oblique ribs, external force can be guided to be dispersed, and the area between the two oblique ribs can be constructed as a crush zone. The position of the crush zone is limited by arranging the positions of the oblique ribs. When subjected to external force, the separator can be guided to collapse at the set position, thereby reducing the impact on the battery cell.

[0046] According to some embodiments of the present application, the separator further includes at least one recessed portion, and the recessed portions are arranged at intervals to form oblique ribs.

[0047] In the embodiment of the present application, by providing a recessed portion and constructing the recessed portion as a collapse zone, the recessed portion can be guided to collapse when the separator is subjected to force, which is beneficial to reducing the impact of external force on the battery cell.

[0048] According to some embodiments of the present application, the separator is made of non-metallic material.

[0049] In the embodiment of the present application, the separator is made of non-metallic material, so that the separator becomes an insulating member, which can prevent the separator from contacting the battery cell and causing a short circuit when it is collided or squeezed.

[0050] According to some embodiments of the present application, the separator has a separator, the separator is located between the outer frame and the battery cell, and the separator is spaced apart from the battery cell. The separator also includes a mounting portion, the mounting portion is connected to the separator, the mounting portion is fixedly connected to the box body, and the separator also includes at least one recessed portion, each recessed portion is spaced apart to form an oblique rib, and the oblique rib is inclined along the direction of the battery cell toward the separator. The separator also includes an abutment portion, the abutment portion abuts against the outer frame, the separator is located on both sides of the mounting portion, the oblique ribs connect the separator and the abutment portion, and the abutment portion and the separator are spaced apart.

[0051] In the embodiment of the present application, the two partitions share a mounting portion and an abutting portion, thereby improving the integration of parts; the abutting portion is spaced apart from the partition as a force-bearing portion, and the abutting portion and the partition are connected by oblique ribs, thereby improving the safety performance of the battery.

[0052] According to some embodiments of the present application, the partitions are distributed in the middle or end of the accommodating cavity close to the outer frame.

[0053] In the embodiment of the present application, the weak areas of the battery or the areas that are easily impacted by external forces can be protected by the distribution positions of the separators, thereby improving the safety performance of the battery.

[0054] The present application also provides an electrical device, comprising the battery in any of the above embodiments, and the battery is used to provide electrical energy to the electrical device.

[0055] The present application also provides a method for manufacturing a battery, comprising: providing a box body, the box body comprising an outer frame, the outer frame being used to form a accommodating cavity; providing a separator, connecting the separator to the box body; providing a battery cell, accommodating the battery cell in the accommodating cavity, so that at least a portion of the separator is located between the outer frame and the battery cell, so that there is a gap between the outer frame and the battery cell.

[0056] According to some embodiments of the present application, a plurality of battery cells are provided, and the battery manufacturing method further includes stacking the plurality of battery cells to form a battery pack; providing an end plate, disposing the end plate at an end of the battery pack along a stacking direction, fixing the end plate to the battery pack and accommodating it in an accommodating cavity, so that at least a portion of the partition abuts against the end plate.

[0057] The battery cells are stacked to form a battery pack, and end plates are connected at both ends of the battery pack. The battery pack and the end plates are put into a box together, and the battery pack connected with the end plates is directly positioned by abutting the separators against the end plates, thereby improving the efficiency of battery manufacturing.

[0058] According to some embodiments of the present application, the surface of the end plate facing the separator includes an abutment surface and an inclined surface, and the battery manufacturing method also includes, when the end plate and the battery pack are accommodated in the accommodating cavity, the inclined surface is used to cooperate with the separator and guide the end plate and the battery pack into the accommodating cavity, so that the separator abuts against the abutment surface.

[0059] The end plate has an inclined surface, through which the battery pack can be guided into the box. The inclined surface can be used to contact the end plate. Through the direction formed by the inclined surface, the end plate can be directly positioned after being guided into the box, thereby improving assembly efficiency.

[0060] According to some embodiments of the present application, the separator is detachably connected to the box body, and the battery manufacturing method further includes removing the separator after the battery cell is accommodated in the accommodating cavity.

[0061] After the battery cells are packed into boxes, the separators can be removed and used as packing tools to be reused during battery manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application 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 drawings without paying creative work.

[0063] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0064] Figure 1 Schematic diagram of electrical equipment

[0065] Figure 2 A schematic diagram of a box including a battery cell in some embodiments of the present application;

[0066] Figure 3 for Figure 1 A top view of some embodiments of the middle partition and the box body;

[0067] Figure 4 for Figure 1 An enlarged view of the matching position of the middle partition and the box body;

[0068] Figure 5 for Figure 2 A partial enlarged view of the middle C area;

[0069] Figure 6 for Figure 4 Schematic diagram of the middle separator;

[0070] Figure 7 for Figure 4 Schematic diagram of the middle separator;

[0071] Figure 8 for Figure 4 Schematic diagram of the middle separator;

[0072] Fig. 9 for Figure 4 Schematic diagram of the middle separator;

[0073] Fig.10 for Figure 2 A partial enlarged view of the D area in the middle;

[0074] Fig.11 for Fig. 9 A top view of some embodiments of the middle partition and the box body;

[0075] Fig.12 for Fig. 9 A partial enlarged view of the middle E area;

[0076] Fig.13 for Fig.10 Schematic diagram of the middle separator;

[0077] Fig.14 for Fig. 9 Schematic diagram of the cross section along the BB direction;

[0078] Fig.15 for Fig. 9 A partial enlarged view of the middle F area;

[0079] Fig.16 A schematic diagram of the installation of the partition and the middle beam in some embodiments of the present application;

[0080] Fig.17 Schematic diagram of a separator of some embodiments of the present application;

[0081] Fig.18 Schematic diagram of a separator of some embodiments of the present application;

[0082] Fig.19 Schematic diagram of a separator according to some embodiments of the present application;

[0083] Fig. 20 Schematic diagram of a separator according to some embodiments of the present application;

[0084] Fig.21 Schematic diagram of a separator according to some embodiments of the present application;

[0085] Fig. 22 Schematic diagram of a separator according to some embodiments of the present application;

[0086] Fig.23 Schematic flow chart of a battery manufacturing method according to an embodiment of the present application.

[0087] The figures are as follows:

[0088] Vehicle 1000, battery pack 100, box body 10, outer frame 11, accommodating cavity 12, gap 13, beam 14, partition 20, partition portion 21, mounting portion 22, mounting hole 220, insert 221, slot 222, limiting structure 223, mounting slot 224, oblique rib 23, battery cell 30, end plate 40, main body 41, protrusion 42, inclined surface 421, abutment surface 422, fastener 50, controller 200, motor 300. DETAILED DESCRIPTION

[0089] The following detailed description and drawings of the embodiments of the present application are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0090] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0091] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0092] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0093] In recent years, new energy vehicles have developed by leaps and bounds. In the field of electric vehicles, batteries, as the power source of electric vehicles, play an irreplaceable and important role. At present, the mechanical safety of batteries during use is one of the battery safety issues that consumers generally care about.

[0094] During the actual use of the battery, the battery will be affected by various complex usage environments. In particular, in the event of collision or extrusion, the battery is at extremely high risk of fire and explosion, which poses a major safety hazard and is not conducive to consumer safety.

[0095] In the prior art, due to the requirements for envelope size and energy density, the thickness of the frame of the battery box is usually small, so the battery box's ability to resist impact and extrusion is limited, making it impossible for the box to provide good protection for the battery cells inside. When hit, the box is very likely to be deformed and other mechanical failure risks, so that the force of the collision directly acts on the battery, causing the battery to catch fire and explode. At the same time, the deformation of the box caused by the collision can easily pierce the battery cells, causing secondary damage to the battery cells, and at the same time cause electrical safety failure, increasing the risk of fire and explosion.

[0096] In order to solve the problem of fire and explosion of batteries in collision accidents during use, when the vehicle is hit, it is necessary to avoid the collision force directly acting on the battery cells, and to avoid the deformation of the box causing secondary damage to the battery cells. Based on this concept, the inventor proposed to leave a certain distance between the battery cells and the box. This distance space can be used to buffer the force generated by the collision, and at the same time can accommodate the deformation of the box caused by the collision.

[0097] However, the battery cell needs to be electrically connected to other electrical components in the box, and also needs to cooperate with other structural parts, so the relative position accuracy of the battery cell and the box is required to be high. However, due to the reserved distance between the battery cell and the box, the battery cell still has space to move toward the box, so the assembly accuracy between the battery cell and the box cannot be guaranteed.

[0098] To solve the above problems, an embodiment of the present application provides a battery, including a battery cell, a box and a separator. The box includes an outer frame, the outer frame is used to form a receiving cavity, and the battery cell is received in the receiving cavity. The separator is connected to the box, and at least part of the separator is located between the outer frame and the battery cell, so that there is a gap between the outer frame and the battery cell.

[0099] In the embodiment of the present application, the separator is connected to the box body, and at least a part of the separator is placed between the outer frame and the battery cell, so that the outer frame and the battery cell are arranged at a distance, thereby ensuring that there is a gap between the battery cell and the outer frame.

[0100] When the battery is hit or squeezed, the gap between the battery cell and the outer frame can be used as an energy absorption space, which can buffer the force generated by the collision, thereby reducing the force directly acting on the battery cell. At the same time, the gap between the battery cell and the frame can also be used to accommodate the deformation of the outer frame caused by collision or squeezing, and prevent the deformed outer frame from directly squeezing or puncturing the battery cell. This reduces the force and damage to the battery cell. Therefore, by setting this gap, the risk of safety problems such as fire and explosion of the battery when the battery is hit or squeezed can be reduced.

[0101] At the same time, the separator is at least partially placed between the battery cell and the outer frame. The part between the battery cell and the outer frame can also play a role in buffering and absorbing energy. When impacted or squeezed, the separator is subjected to force before the battery cell, which can protect the battery cell and reduce the probability of safety accidents.

[0102] In addition, the position of the battery cell in the box can be positioned by the separator, so the position accuracy of the battery cell in the box can be improved, thereby improving the reliability of the cooperation between the battery cell and other structural parts in the box.

[0103] The box disclosed in the embodiment of the present application can be used for, but not limited to, electrical equipment such as vehicles, ships or aircraft. The box disclosed in the present application and the battery can be used to form a power supply system for the electrical device, which is beneficial to improve the protection of the battery, thereby effectively reducing the potential safety hazards of the battery during use, thereby improving the safety of the battery.

[0104] The embodiments of the present application provide an electrical device that uses a battery as a power source. The electrical device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, an electric vehicle, an electric car, a ship, a spacecraft, and the like.

[0105] The present application example provides a battery, such as Figure 2 , 3 , 11, including a battery cell 30, a box body 10 and a separator 20. The box body includes an outer frame 11, the outer frame 11 is used to form a receiving cavity 12, and the battery cell 30 is received in the receiving cavity 12. The separator 20 is connected to the box body 10, and at least part of the separator 20 is located between the outer frame 11 and the battery cell 30, so that there is a gap 13 between the outer frame and the battery cell.

[0106] The battery is composed of a box body 10, a battery cell 30 and other structural parts contained in the box body 10. The battery is installed on electrical equipment such as vehicles, containers, electrical cabinets, brackets, etc. through the box body 10 to form an electrical system.

[0107] The battery cell 30 may include a lithium-ion secondary battery, a lithium-ion primary battery, a lithium-sulfur battery, a sodium-lithium-ion battery, a sodium-ion battery or a magnesium-ion battery, etc., which is not limited in the embodiments of the present application. The battery cell 30 may be cylindrical, flat, rectangular or other shapes, etc., which is not limited in the embodiments of the present application. The battery cell 30 is generally divided into three types according to the packaging method: cylindrical battery cells 30, square battery cells 30 and soft-pack battery cells 30, which is not limited in the embodiments of the present application.

[0108] The box 10 is used to accommodate the battery cells 30. The box 10 supports the battery cells 30 and also provides a certain degree of protection for the battery cells 30. The box 10 may be provided with mounting points, and the battery may be installed on electrical equipment such as vehicles, containers, electrical cabinets, brackets, etc. through the mounting points of the box 10, thereby forming an electrical system. The box 10 may be a tray with a mounting plane for the battery cells 30, or may be a polygonal box, etc., which is not limited in the embodiments of the present application. The box 10 may be a box formed by various processes such as a sheet metal stamping box, a profile bending box, a welded box, a die-cast box, or a plastic shell box, which is not limited in the embodiments of the present application. For example Figure 2 , 3 The box body 10 shown in 11 is manufactured by the profile welding process.

[0109] The outer frame 11 is used to form a receiving chamber 12 for receiving the battery cell 30. The receiving chamber 12 can be divided into a plurality of sub-receiving chambers by the structural members inside the box. The outer frame 11 can also provide a certain degree of protection for the battery cell 30. The outer frame 11 can be integrally formed or formed by splicing. Figure 2The box body 10 shown is an outer frame 11 formed by splicing.

[0110] The partition 20 is disposed on the box body 10, and can be specifically disposed near the outer frame 11 of the box body 10, or disposed on the outer frame 11, or disposed on other structural members in the box body 10. Figure 3 , 11 As shown, according to the position area of ​​the box body 10 after the battery cells 30 are grouped, the separators 20 are arranged at the four corners and the middle position of the box body 10.

[0111] The material of the separator 20 can be a metal material, which has a short manufacturing cycle and low manufacturing cost. The material of the separator 20 can also be a non-metallic material. The insulating properties of non-metallic materials can prevent the risk of insulation failure between the fixing member and the battery cell 30.

[0112] The partition 20 may be formed integrally with the box body 10, or connected to the box body 10 by welding or gluing. In this case, the partition 20 and the box body 10 are not removable. In the process of manufacturing the box body 10, the partition 20 is directly set, which can reduce the assembly process of the subsequent assembly of the partition 20. The partition 20 can also be installed on the box body 10 through a fixing part, for example, it is installed on the box body 10 through a fixing part such as a bolt, a rivet, a buckle, a locating pin 223, etc. By using the fixing part to install the partition 20 on the box body 10, the fixing part can be integrated into the box body 10 as a separate component, so that the standard universal fixing part can be designed to adapt to boxes 10 of different specifications, thereby improving the commonality and standardization of the parts of the partition 20, thereby reducing the workload of design and processing and manufacturing, and further shortening the production technology preparation cycle.

[0113] At least part of the separator 20 is located between the outer frame 11 and the battery cell 30, so that the battery cell 30 is spaced apart from the outer frame 11, and a gap 13 is formed between the outer frame 11 and the battery cell 30. Fig.10 As shown, the separator 20 is located at the corner of the box body 10. At this time, the entire structure of the separator 20 is located between the battery cell 30 and the outer frame 11, so that there is a gap 13 between the battery cell 30 and the two sides forming the outer frame 11, and there is also a gap 13 at the corner. Figure 5 As shown, the separator 20 is located in the middle of the frame of the box body 10 , and part of the structure of the separator 20 is located between the battery cell 30 and the outer frame 11 , so that there is a gap 13 between the battery cell 30 and at least one side of the outer frame 11 .

[0114] In the embodiment of the present application, at least a portion of the separator 20 is placed between the outer frame 11 and the battery cell 30 , so that the outer frame 11 and the battery cell 30 are spaced apart, thereby ensuring that there is a gap 13 between the battery cell 30 and the outer frame 11 .

[0115] When the battery is hit or squeezed, the gap 13 between the battery cell 30 and the outer frame 11 can be used as an energy absorption space, which can buffer the force generated by the collision, thereby reducing the force directly acting on the battery cell 30. At the same time, the gap between the battery cell 30 and the outer frame can also be used to accommodate the deformation of the frame caused by collision or squeezing, and prevent the deformed outer frame from directly squeezing or puncturing the battery cell 30. Thereby reducing the force and damage to the battery cell 30. Therefore, by setting this gap, the risk of safety problems such as fire and explosion of the battery when the battery is hit or squeezed can be reduced.

[0116] According to some embodiments of the present application, Figure 4-22 As shown, the separator 20 has a separator 21 , which is located between the battery cell 30 and the outer frame 11 , and the separator is spaced apart from the battery cell.

[0117] The partition 21 is located between the battery cell 30 and the outer frame 11, separating the battery cell 30 from the outer frame. The partition and the battery cell are arranged at intervals. The partition may have a plane parallel to the side of the battery cell 30, and the plane may be used as a position reference to define the gap size between the battery cell and the partition. The partition 21 may also have a plane at an angle to the side of the battery cell 30, which may be used to guide the battery cell 30 into the box when the battery cell 30 is put into the box. The partition 21 may also have a smooth transition arc surface. By setting the arc surface, the surface of the battery cell 30 can be prevented from being scratched when the partition contacts the battery cell.

[0118] In the embodiment of the present application, by providing the partition 21 and the battery cell 30 to be spaced apart, when the battery is collided or squeezed, a deformation space is provided for the partition, thereby protecting the battery cell.

[0119] According to some embodiments of the present application, Figure 3 , 4 As shown in , 5, 9, 10, 11, and 14, a plurality of battery cells 30 are provided, and the plurality of battery cells 30 are stacked to form a battery pack. The battery also includes an end plate 40 located at the end of the battery pack along the stacking direction. The end plate 40 is fixedly connected to the battery pack, and the partition 21 abuts against the end plate 40.

[0120] The battery pack is formed by stacking a plurality of battery cells 30. The battery pack may be a row of battery cells 30 arranged in sequence in one direction, or may be a plurality of rows of battery cells 30 arranged in one direction. The positions of the battery cells 30 in the battery pack may be fixed, and may be fixed by gluing, or fixed by a frame or other structural parts to form a battery pack.

[0121] The end plate 40 is located at the end of the battery pack and is fixedly connected to the battery pack. The end plate 40 can be used to fix and squeeze the grouped battery cells 30. At the same time, when the battery pack needs to be moved, the end plate can also be used to connect and fix with the fixture. The end plate 40 can be a plate-like structural member located at the end of the battery pack, or it can be a bracket structural member constituting the battery pack frame. The end plate 40 can be made of non-metallic material or metal material, wherein the end plate 40 made of metal material is at least partially connected to an insulating member.

[0122] In the embodiment of the present application, by stacking a plurality of battery cells 30 to form a battery pack, the assembly efficiency of the battery cells 30 can be improved. An end plate 40 is provided at the end of the battery pack, and the separator 21 abuts against the end plate 40 to avoid direct abutment between the separator 21 and the battery cell 30 to damage the battery cell 30.

[0123] According to some embodiments of the present application, Fig. 9 , 14 As shown, the end plate 40 includes a main body 41 and a protruding portion 42 connected to the main body and protruding toward the outer frame, and the partition 21 abuts against the protruding portion 42 .

[0124] The main body 41 is located on one side of the battery pack, and the protrusion 42 is protruded from the main body 41 toward the outer frame. The protrusion 42 can have a plane parallel to the partition 21, thereby increasing the contact area with the partition 21. The protrusion can also have a transitional arc surface to reduce the friction between the partition 21. The protrusion 42 can also be designed to have a concave-convex structure that matches the partition 21, and can also play a limiting role in the stacking direction of the battery cells 30. Figure 6 and 12 As shown, the protrusion 42 has a flat surface and abuts against the partition portion 21 of the partition member 20 .

[0125] In the embodiment of the present application, by providing a protrusion 42 on the end plate 40 and the partition 21 abutting against the protrusion 42, the partition 20 can be prevented from directly contacting the battery cell 30, thereby preventing the battery cell 30 from being subjected to force. In particular, when the outer frame 11 is subjected to collision or extrusion, the force transmitted to the partition 21 will act on the end plate 40 instead of the battery cell 30, thereby protecting the battery cell 30. In addition, during the vibration of the battery, relative displacement will occur between the objects abutting each other, thereby generating friction. The partition 20 abuts against the end plate 40, avoiding direct contact with the battery cell 30, and thus not generating friction with the battery cell 30, further protecting the battery cell 30.

[0126] According to some embodiments of the present application, Fig. 9 , 14As shown, the surface of the protrusion 42 facing the partition 21 includes a contact surface and an inclined surface 421 , the contact surface contacts the partition 21 , and the inclined surface 421 is connected to the contact surface 422 and is inclined toward the main body 41 .

[0127] The abutting surface 422 abuts against the partition 21, and the abutting surface 422 may be a plane or a contoured surface matched with the partition 21. The inclined surface 421 connects the main body 41 and the protruding portion 42, and the inclined surface 421 may be an inclined plane or an arc surface.

[0128] In the embodiment of the present application, the abutment surface 422 abuts against the surface of the partition portion 21, and the inclined surface 421 connects the protrusion 42 and the main body 41, so that the force exerted on the protrusion 42 is evenly transmitted to the main body 41. At the same time, it can also increase the structural strength of the protrusion 42 and reduce the possibility of deformation of the protrusion 42, thereby protecting the battery cell 30.

[0129] According to some embodiments of the present application, Figure 4-8 As shown in FIGS. 14-22 , the partition 20 also includes a mounting portion 22 , which is connected to the partition 21 , and the mounting portion 22 is fixedly connected to the box body 10 .

[0130] The partition 20 is fixedly connected to the box body 10 through the mounting portion 22, and the connection method can be connected by buckle, thread, welding, etc. The mounting portion 22 can be designed with mounting structures such as buckle, thread, welding area, etc. The mounting portion 22 and the partition 21 can be integrally formed or connected by buckle, gluing, thread, welding, etc.

[0131] In the embodiment of the present application, by providing the mounting portion 22, the partition 20 is connected to the box body 10 through the mounting portion 22, so that the installation of the partition is convenient.

[0132] According to some embodiments of the present application, Figure 4-8 As shown in FIGS. 14-22 , the battery further includes a fastener 50 , and the mounting portion 22 includes at least one mounting hole 220 , and at least a portion of the fastener 50 penetrates into the mounting hole 220 to fix the mounting portion 22 to the box body 10 .

[0133] The fastener 50 may be a structural member such as a bolt, a nut, or a rivet that can connect two or more parts. The fastener 50 may be located on a structural member of the box body 10 and connected to the structural member of the box body 10. For example, a stud may be provided on the outer frame 11 of the box body 10, and the stud may pass through the mounting hole 220 and be connected to the nut of the mounting portion 22. The fastener 50 may also be a component separated from the box body 10. For example, a thread may be provided on a structural member of the box body 10, and the fastener 50 may be a bolt that passes through the mounting hole 220, fixes the mounting portion 22 on the box body 10, and is threadedly connected.

[0134] The mounting portion 22 is connected to the housing 10 via a fastener 50. The mounting hole 220 of the mounting portion 22 may be a hole formed when the fastener 50 is inserted, for example, when a fastener 50 such as an FDS bolt (Flow drill screw), a self-piercing rivet, or a self-tapping screw that can directly penetrate the parent material to be connected is used for connection, the mounting hole 220 is a hole formed when the fastener 50 penetrates the mounting portion 22 during the tightening process. The mounting hole 220 may also be a hole in the mounting portion 22 itself, for example, when a fastener 50 such as a bolt or a rivet is used for connection, the fastener 50 passes through the hole in the mounting portion 22 itself and is connected to the housing 10.

[0135] The mounting hole 220 may be one, such as Figure 4-8 As shown, there is one mounting hole 220, which can save costs and manufacturing time while achieving fixed connection between the partition 20 and the box body 10. The mounting hole 220 can also be two or more, such as Fig.10 , 12 As shown in FIGS. 13 and 15 , the separator is provided with two mounting holes 220 , which can prevent the separator 20 from rotating during the installation process and make the installation positioning of the separator 20 more accurate.

[0136] In the embodiment of the present application, a fastener 50 is provided to pass through the mounting hole 220 of the mounting portion 22 so as to fix the partition 20 to the box body 10, thereby making the connection between the partition 20 and the box body 10 more reliable and improving the assembly efficiency.

[0137] According to some embodiments of the present application, Figure 7 , 8 As shown, an insert 221 is disposed in the mounting hole 220 . The insert 221 is made of a metal material and has a through hole. At least a portion of the fastener 50 penetrates the through hole to fix the mounting portion to the box body 10 .

[0138] The metal insert 221 may be an insert 221 nut with internal threads, or an insert 221 sleeve with smooth through holes. The insert 221 may also have a flange to increase the mounting surface, thereby increasing the contact area with the fastener 50 .

[0139] In the embodiment of the present application, the insert 221 is provided to enhance the structural strength of the mounting portion 22, and prevent the mounting portion 22 from being crushed during the fastening process of the fastener 50. During the use of the battery, the connection reliability between the mounting portion 22 and the box 10 can also be improved.

[0140] According to some embodiments of the present application, Figure 4 As shown, the mounting portion 22 includes a mounting groove 224 , and an end of the fastener 50 is received in the mounting groove 224 .

[0141] The end of the fastener 50 and the mounting portion 22 abut against each other to limit the displacement of the partition toward the end of the fastener, such as Figure 4 As shown, the end of the fastener is a bolt head. The mounting groove 224 is used to avoid the end of the fastener 50. The end of the fastener 50 is installed in the mounting groove 224 so that the end of the fastener 50 can sink into the partition 20.

[0142] In the embodiment of the present application, the end of the fastener is sunk into the separator 20 to prevent the end of the fastener from protruding out of the separator 20 and occupying the internal space of the battery, thereby improving the energy density of the battery.

[0143] According to some embodiments of the present application, Figure 4-8 As shown in FIGS. 10-15 , the mounting portion further includes a first protrusion 225 , which protrudes from the partition portion 21 toward the accommodating cavity, and the mounting groove 224 extends into the first protrusion 225 , and the end of the fastener 50 is at least partially accommodated in the first protrusion 225 .

[0144] The first protruding portion 225 is disposed protruding from the partition portion 21 , and the mounting groove 224 is at least partially located at an end portion of the first protruding portion 225 for mounting the fastener 50 .

[0145] In the embodiment of the present application, by providing a first protrusion locally on the partition for installing the end of the fastener, the influence of the size of the end of the fastener 50 on the position of the partition 21 can be reduced.

[0146] According to some embodiments of the present application, Figure 6 , 7 As shown in FIGS. 8 , 16 and 17 , one of the mounting portion 22 and the box body is provided with a card slot 222 , and the other is provided with a card connection portion, and the card slot is card-connected to the card connection portion to connect the partition 20 and the box body 10 .

[0147] The card slot 222 can be connected to the card connection part by interference connection, snap connection, snap connection, gluing, etc. The partition 20 is directly snapped on the box body through the card slot 222, and the part connected to the card slot is the card connection part. A snap can be designed in the card slot 222 to connect with the box body, and the card slot 222 can also be connected to the card connection part by filling glue.

[0148] In the embodiment of the present application, the connection area with the box can be increased by providing the card slot 222, making the connection more reliable. In addition, the card slot 222 can be used for limiting to prevent the partition 20 from rotating, thereby improving assembly efficiency.

[0149] According to some embodiments of the present application, Figure 18-22As shown, one of the mounting portion 22 and the box body 10 is provided with a limiting structure 223 , and the other is provided with a limiting structure matching portion, and the limiting structure 223 is plugged into the limiting structure matching portion to connect the partition 20 and the box body 10 .

[0150] like Fig.18 As shown, the limiting structure can be a positioning pin, and the matching portion of the limiting structure can be a through hole or a groove, and the positioning pin is inserted into the through hole or the groove to connect the partition and the box body 10. Fig.19 , 20 As shown in 22, the limiting structure can also be a buckle, and the limiting matching part can be a through hole or a groove, and the buckle is inserted into the through hole or the groove to connect the partition and the box body 10.

[0151] By providing the limiting structure and the limiting structure matching part, the partition 20 is fixedly connected to the box body 10, so that the connection between the partition 20 and the box body 10 is more reliable and the assembly efficiency is improved.

[0152] According to some embodiments of the present application, the mounting portion 22 is detachably connected to the box body 10 .

[0153] The detachable connection method can be through a snap, a thread, a pin, etc.

[0154] In the embodiment of the present application, by providing a detachable connection, the separator 20 can be reused.

[0155] According to some embodiments of the present application, Figure 3-5 As shown in , 10-12 and 15 , the box body 10 further includes a beam 14 disposed in the accommodating cavity, the beam 14 is connected to the outer frame 11 , and the mounting portion 22 is connected to the end of the beam 14 close to the outer frame 11 .

[0156] The beam 14 can be a reinforcing beam for enhancing the rigidity of the box 10, a mounting beam for mounting a battery pack, or a frame beam for forming a mounting cavity for a battery cell 30, or other functional or non-functional box beams. The mounting portion 22 can be fixed to the beam 14 by a fastener 50, a buckle, an adhesive, or other connection methods, such as Figure 3-5 As shown, the mounting portion 22 is locked on the beam 14 by bolts, as shown in FIG. Fig.16 As shown, the mounting portion 22 is connected to the beam 14 via the slot 222 .

[0157] In the embodiment of the present application, the partition is fixed to the beam 14 through the mounting portion 22, and the partition is fixed to the beam through the mounting portion. The beam provides an installation space for the partition, making it more convenient to fix the partition on the box body.

[0158] According to some embodiments of the present application, Figure 3-5As shown in 11-12, the beam 14 is used to divide the accommodating cavity into at least two sub-accommodating cavities, and the sub-accommodating cavity is used to accommodate at least one battery cell 30. The partition 20 includes two partitioning parts 21 located on both sides of the beam, and the two partitioning parts 21 are respectively spaced apart from the battery cells in two adjacent sub-accommodating cavities.

[0159] The beam 14 is arranged horizontally and vertically to divide the outer frame 11 into a plurality of sub-accommodation cavities, each of which accommodates a battery cell 30. The partition 20 is mounted on the beam 14, and two partitions 21 of the partition 20 are located on both sides of the beam 14. The two partitions 21 are used to position the battery cells 30 located on both sides of the beam 14. Figure 4 As shown, the two partitions 21 are symmetrical in the middle, and the battery cells 30 on both sides of the beam 14 are positioned at the same time, so that the distances between the battery cells 30 on both sides of the beam 14 and the outer frame 11 are consistent. The partition 21 can also be asymmetrical, and the distances between the battery cells 30 on both sides of the beam 14 and the outer frame 11 can be different according to needs.

[0160] In the embodiment of the present application, the battery cells 30 located on both sides of the beam 14 can be positioned by the separator 20, which saves parts and improves assembly efficiency. At the same time, the separator 20 is used to position the battery cells 30 on both sides, so that the positioning reference of the battery cells 30 can be unified, which is more conducive to the consistency of the entire battery.

[0161] According to some embodiments of the present application, Figure 3-8 As shown in FIGS. 11-13 , the mounting portion 22 is disposed between the two partition portions 21 , and the mounting portion 22 is fixedly connected to the beam 14 .

[0162] The mounting portion 22 is located between the two partitions 21 . The partitions 21 may be arranged symmetrically, with the mounting portion 22 placed between the two partitions 21 . The partitions 21 may also be arranged in an offset or asymmetrical manner, with the mounting portion 22 placed between the two partitions 21 .

[0163] In the embodiment of the present application, by arranging the mounting portion 22 to be located between the two partitions 21, one partition 20 can be integrated with more than two partitions 21, thereby improving the integration of components; multiple partitions 21 share one mounting point, thereby improving the consistency of positioning points; at the same time, it also saves installation steps and improves assembly efficiency.

[0164] According to some embodiments of the present application, Figure 4 , 5 As shown in FIGS. 9 and 10 , the partition 20 further includes a contact portion 24 , which contacts the outer frame 11 .

[0165] The partition 20 abuts against the outer frame 11 through the abutment portion 24, so that the partition 20 can be limited in the axial direction of the mounting hole 220. The abutment portion 24 can directly abut against the outer frame 11, or can abut against the outer frame 11 of the box body 10 through other structural members. For example, a buffer is provided between the abutment portion 24 and the outer frame 11, the abutment portion 24 abuts against the buffer, and the buffer abuts against the outer frame 11.

[0166] In the embodiment of the present application, the abutment portion 24 abuts against the outer frame 11, thereby limiting the rotation of the partition 20, avoiding a complex design of the mounting portion 22, and improving assembly efficiency while saving component costs.

[0167] According to some embodiments of the present application, Figure 4-8 As shown in FIGS. 10-22 , the separator 20 further includes an oblique rib 23 , which is inclined along the direction of the battery cell 30 toward the separator 20 .

[0168] The oblique ribs 23 can guide the transmission of force. Figure 4 , 10 As shown in FIGS. 12 , 15 , and 21 , when the outer frame 11 is hit or squeezed, the force is applied to the battery cell 30 . When the force is transmitted to the separator 20 , the oblique ribs 23 disperse the force.

[0169] In the embodiment of the present application, the oblique ribs can disperse the external force, protect the battery cells 30, and thus reduce the risk of safety accidents.

[0170] According to some embodiments of the present application, the separator 20 has a separator 21 , which is located between the outer frame 11 and the battery cell 30 , and the separator 21 is spaced apart from the battery cell 30 , and the oblique rib 23 is connected to the separator 21 .

[0171] The oblique rib 23 is connected to the partition 21 . The oblique rib 23 may be connected to the middle portion of the partition 21 or to the end portion of the partition 21 .

[0172] In the embodiment of the present application, when subjected to external force, the external force transmitted to the partition 21 is dispersed, thereby protecting the battery cell 30 and further reducing the risk of safety accidents.

[0173] According to some embodiments of the present application, there are at least two oblique ribs 23 , each of which is connected to the partition 21 .

[0174] The two or more oblique ribs 23 may be distributed symmetrically, in parallel, or in staggered arrangement; the two or more oblique ribs 23 may be connected to the same partition 21 at the same time, or may be connected to two or more partitions 21 respectively.

[0175] In the embodiment of the present application, by providing two or more oblique ribs 23, external force can be guided to be dispersed, and the area between the two oblique ribs 23 can be constructed as a collapse zone. The position of the collapse zone is limited by arranging the positions of the oblique ribs 23, and when subjected to external force, the separator 20 can be guided to collapse at a set position, thereby reducing the impact on the battery cell.

[0176] According to some embodiments of the present application, the separator 20 further includes at least one recessed portion 25, and each recessed portion 25 is arranged at intervals to form an oblique rib 23.

[0177] The concave portion may be a sink, or a through hole, etc. The concave portion is a region where the structural strength of the separator is weak, and is used to construct a collapse zone of the separator.

[0178] In the embodiment of the present application, by providing a recessed portion and constructing the recessed portion as a collapse zone, the recessed portion can be guided to collapse when the separator is subjected to force, which is beneficial to reducing the impact of external force on the battery cell.

[0179] According to some embodiments of the present application, the separator 20 is made of non-metallic material.

[0180] Non-metallic materials can be materials with poor conductivity such as plastics, synthetic fibers, and composite materials.

[0181] In the embodiment of the present application, the separator 20 is made of a non-metallic material, so that the separator 20 becomes an insulating member, which can prevent the separator 20 from contacting the battery cell 30 and causing a short circuit when it is collided or squeezed.

[0182] According to some embodiments of the present application, the separator 20 has a separator 21, the separator 21 is located between the outer frame 11 and the battery cell 30, and the separator 21 is spaced apart from the battery cell 30. The separator 20 also includes a mounting portion 22, the mounting portion 22 is connected to the separator 21, and the mounting portion 22 is fixedly connected to the box body 10. The separator also includes at least one recessed portion, each recessed portion is spaced apart to form an oblique rib 23, and the oblique rib 23 is inclined along the direction of the battery cell 30 toward the separator. The separator 20 also includes an abutment portion 24, the abutment portion 24 abuts against the outer frame 11, the separator is located on both sides of the mounting portion, the oblique ribs connect the separator and the abutment portion, and the abutment portion and the separator are spaced apart.

[0183] In the embodiment of the present application, the two partitions share a mounting portion and an abutting portion, thereby improving the integration of parts; the abutting portion is spaced apart from the partition as a force-bearing portion, and the abutting portion and the partition are connected by oblique ribs, thereby improving the safety performance of the battery.

[0184] According to some embodiments of the present application, the partition 20 is distributed in the middle or end of the accommodating cavity 12 close to the outer frame.

[0185] The partitions may be distributed in the middle area of ​​the accommodating cavity close to the outer frame, or may be distributed in the corner area of ​​the accommodating cavity close to the outer frame.

[0186] In the embodiment of the present application, the weak areas of the battery or the areas that are easily impacted by external forces can be protected by the distribution positions of the separators, thereby improving the safety performance of the battery.

[0187] According to some embodiments of the present application, Figure 3-5 As shown in Figures 7 and 10, the box body includes an outer frame 11, the outer frame 11 forms a receiving cavity 12, a beam 14 is arranged in the box body 10, the beam 14 is connected to the outer frame 11, and a partition 20 is installed at the end of the beam 14 close to the outer frame. The partitions 20 are installed at the four corners of the box body 10.

[0188] As shown in the figure, the partition 20 located at the end of the beam 14 has two partitions 21, and the two partitions are respectively abutted against the end plates of the ends of the battery pack located on both sides of the beam. The partition also has a mounting hole, in which a steel sleeve or copper sleeve with a through hole is embedded, and at least part of the fastener 50 is inserted into the steel sleeve or copper sleeve to fix the partition 20 to the beam 14, and the end of the fastener 50 is set in the mounting groove 224 of the partition 20. The partition 20 is also abutted against the outer frame 11 to prevent the partition 20 from rotating during the installation process. The partition is also symmetrically distributed with oblique ribs 23 to disperse external forces.

[0189] The partitions 20 located at the four corners of the box body 10 have a partition portion 21 . The partitions are mounted on the outer frame by fasteners, and the partition portions abut against the end plates.

[0190] The present application also provides an electrical device, including the battery in the above embodiment, and the battery is used to provide electrical energy to the device.

[0191] The present application also proposes a method for manufacturing a battery, such as Fig.23 As shown, it includes providing a box body 10, the box body 10 includes an outer frame 11, the outer frame 11 is used to form a accommodating cavity; providing a partition 20, connecting the partition 20 to the box body 10; providing a battery cell 30, accommodating the battery cell 30 in the accommodating cavity, so that at least part of the partition 20 is located between the outer frame 11 and the battery cell 30, and there is a gap between the outer frame 11 and the battery cell 30.

[0192] According to some embodiments of the present application, a plurality of battery cells are provided, and the battery manufacturing method further includes stacking the plurality of battery cells to form a battery pack, providing an end plate 40, disposing the end plate 40 at the end of the battery pack in the stacking direction, and fixing the end plate 40 to the battery pack and accommodating it in the accommodating cavity so that at least a portion of the partition 20 abuts against the end plate 40.

[0193] The battery cells 30 are stacked to form a battery pack, and end plates 40 are connected at both ends of the battery pack. The battery pack and the end plates 40 are put into a box together, and the separator 20 is abutted against the end plates 40 to directly position the battery pack connected with the end plates 40, thereby improving the efficiency of battery manufacturing.

[0194] According to some embodiments of the present application, the surface of the end plate 40 facing the separator includes an abutment surface and a slope 421, and the battery manufacturing method also includes when the end plate 40 and the battery pack are accommodated in the accommodating cavity, the slope 421 is used to cooperate with the separator 20 and guide the end plate 40 and the battery pack into the accommodating cavity, so that the separator 20 abuts against the abutment surface.

[0195] The end plate 40 has a slope 421, through which the battery pack can be guided into the box. The slope 421 can be used to contact the end plate 40. The direction formed by the slope 421 can directly position the end plate 40 after guiding it into the box, thereby improving assembly efficiency.

[0196] According to some embodiments of the present application, the separator is detachably connected to the box body, and the battery manufacturing method further includes removing the separator 20 after the battery cell is accommodated in the accommodating cavity.

[0197] After the battery cells 30 are completely boxed, the separators 20 can be removed, and the removed separators 20 can be used as boxing tools and reused during battery manufacturing.

Claims

1. A battery, characterized in that: include: Battery cell (30); A box body (10) comprises an outer frame (11), wherein the outer frame (11) is used to form a receiving cavity (12), and the battery cell (30) is received in the receiving cavity (12); a separator (20), the separator (20) being connected to the box body (10), and at least a portion of the separator (20) being located between the outer frame (11) and the battery cell (30), so that a gap (13) is provided between the outer frame (11) and the battery cell (30); The separator (20) has a separator (21), the separator (21) is located between the outer frame (11) and the battery cell (30), and the separator (21) and the battery cell (30) are spaced apart.

2. The battery according to claim 1, characterized in that A plurality of battery cells (30) are provided, and a plurality of the battery cells (30) are stacked to form a battery pack. The battery further comprises an end plate (40) located at an end of the battery pack along a stacking direction, the end plate (40) is fixedly connected to the battery pack, and the partition (21) abuts against the end plate (40).

3. The battery according to claim 2, characterized in that The end plate (40) comprises a main body (41) and a protruding portion (42) connected to the main body (41) and protruding toward the outer frame (11), and the partition (21) is in abutment with the protruding portion (42).

4. The battery according to claim 3, characterized in that The surface of the protruding portion (42) facing the partition portion (21) comprises a contact surface (422) and an inclined surface (421), wherein the contact surface (422) contacts the protruding portion (42), and the inclined surface (421) is connected to the contact surface (422) and is inclined toward the main body portion (41).

5. The battery according to any one of claims 1 to 4, characterized in that: The partition (20) further comprises a mounting portion (22), wherein the mounting portion (22) is connected to the partition (21), and the mounting portion (22) is fixedly connected to the box body (10).

6. The battery according to claim 5, characterized in that The mounting portion (22) includes at least one mounting hole (220), and the battery also includes a fastener (50), at least a portion of the fastener (50) penetrates into the mounting hole (220) to fix the mounting portion (22) to the box (10).

7. The battery according to claim 6, characterized in that An insert (221) is arranged in the mounting hole (220), the insert (221) is made of a metal material, the insert (221) has a through hole, and at least a portion of the fastener (50) penetrates into the through hole to fix the mounting portion (22) to the box body (10).

8. The battery according to claim 6 or 7, characterized in that: The mounting portion (22) comprises a mounting groove (224), and an end portion of the fastener (50) is accommodated in the mounting groove.

9. The battery according to claim 8, characterized in that The mounting portion (22) further comprises a first protrusion (225), wherein the first protrusion (225) protrudes from the partition portion (21) in the direction of the accommodating cavity, the mounting groove (224) extends into the first protrusion (225), and the end of the fastener (50) is at least partially accommodated in the first protrusion (225).

10. The battery according to claim 5, characterized in that One of the mounting portion (22) and the box body (10) is provided with a slot (222), and the other is provided with a snap-fit ​​portion, and the slot (222) is snap-fitted to the snap-fit ​​portion to connect the partition (20) and the box body (10).

11. The battery according to claim 5, characterized in that One of the mounting portion (22) and the box body (10) is provided with a limiting structure (223), and the other is provided with a limiting structure matching portion, and the limiting structure (223) is plugged into the limiting structure matching portion to connect the partition (20) and the box body.

12. The battery according to claim 5, characterized in that The mounting portion (22) is detachably connected to the box body (10).

13. The battery according to claim 5, characterized in that The box body (10) further comprises a beam (14) arranged in the accommodating cavity, the beam (14) being connected to the outer frame (11), and the mounting portion (22) being connected to an end of the beam (14) close to the outer frame (11).

14. The battery according to claim 13, characterized in that The beam (14) is used to divide the accommodating cavity (12) into at least two sub-accommodating cavities, the sub-accommodating cavities are used to accommodate at least one battery cell (30), and the partition (20) comprises two partition portions (21) located on both sides of the beam (14), and the two partition portions (21) are respectively arranged to be spaced apart from the battery cells (30) in two adjacent sub-accommodating cavities.

15. The battery according to claim 14, characterized in that The mounting portion (22) is arranged between the two partition portions (21), and the mounting portion (22) is fixedly connected to the beam (14).

16. The battery according to claim 5, characterized in that The partition portion (21) and the mounting portion (22) are an integrally formed structure.

17. The battery according to any one of claims 1-4, 6-7, 9-16, characterized in that: The partition (20) further comprises an abutment portion (24), wherein the abutment portion (24) abuts against the outer frame (11).

18. The battery according to any one of claims 1-4, 6-7, 9-16, characterized in that: The separator (20) further comprises oblique ribs (23), wherein the oblique ribs (23) are inclined in a direction from the battery cell (30) toward the separator (20).

19. The battery according to claim 18, characterized in that The separator (20) has a separator (21), the separator (21) is located between the outer frame (11) and the battery cell (30), the separator (21) and the battery cell (30) are spaced apart, and the oblique rib is connected to the separator.

20. The battery according to claim 19, characterized in that There are at least two oblique ribs, and the oblique ribs are symmetrically distributed.

21. The battery according to claim 18, characterized in that The separator (20) further comprises at least one recessed portion (25), and the recessed portions (25) are arranged at intervals to form oblique ribs (23).

22. The battery according to any one of claims 1-4, 6-7, 9-16, 19-21, characterized in that: The separator (20) is made of non-metallic material.

23. The battery according to any one of claims 1-4, 6-7, 9-16, 19-21, characterized in that: The partition (20) comprises a partition portion (21), a mounting portion (22), an oblique rib (23) and an abutment portion (24); the partition portion (21) is used to limit the movement of the battery cell (30); the mounting portion (22) is located between the partition portions (21) and is used to be fixedly connected to the battery box (10); the abutment portion (24) is arranged opposite to the partition portion (21) and is used to abut against the outer frame of the box (10); the oblique rib (23) connects the partition portion (21) and the abutment portion (24).

24. The battery according to any one of claims 1-4, 6-7, 9-16, 19-21, characterized in that: The partition (20) is distributed in the middle or end portion of the accommodating cavity (12) close to the outer frame (11).

25. An electrical device, characterized in that: The battery comprises the battery according to any one of claims 1 to 24, wherein the battery is used to provide electrical energy.

26. A method for manufacturing a battery, characterized in that: include: A box body (10) is provided, wherein the box body (10) comprises an outer frame (11), and the outer frame (11) is used to form a receiving cavity (12); Providing a partition (20), and connecting the partition (20) to the box (10); Providing a battery cell (30), accommodating the battery cell (30) in the accommodating cavity (12), so that at least a portion of the separator (20) is located between the outer frame (11) and the battery cell (30), and a gap exists between the outer frame (11) and the battery cell (30); The separator (20) has a separator (21), the separator (21) is located between the outer frame (11) and the battery cell (30), and the separator (21) and the battery cell (30) are spaced apart.

27. The method for manufacturing a battery according to claim 26, characterized in that: The battery cells (30) are provided in plurality, and the method further comprises: Stacking a plurality of the battery cells (30) to form a battery pack; An end plate (40) is provided, and the end plate (40) is arranged at the end of the battery pack along the stacking direction. The end plate (40) is fixedly connected to the battery pack and accommodated in the accommodating cavity (12), so that at least a portion of the partition (20) abuts against the end plate (40).

28. The method for manufacturing a battery according to claim 27, characterized in that: The surface of the end plate (40) facing the partition (20) comprises an abutment surface (422) and an inclined surface (421), and the method further comprises: When the end plate (40) and the battery pack are accommodated in the accommodating cavity (12), the inclined surface (421) is used to cooperate with the partition (20) and guide the end plate (40) and the battery pack into the accommodating cavity (12), so that the partition (20) abuts against the abutting surface (422).

29. The method for manufacturing a battery according to any one of claims 26 to 28, characterized in that: The partition (20) is detachably connected to the box (10), and the method further comprises: After the battery cell (30) is accommodated in the accommodation chamber (12), the separator (20) is removed.

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