Battery module and terminal device

Abstract

The invention discloses a battery module and a terminal device. The battery module comprises a battery cell module, a rubber frame and a first magnetic attraction piece, the rubber frame comprises a first frame body and a first convex part. The first frame body is provided with a first cavity, and the battery cell module is arranged in the first cavity; the first convex part is connected with the first frame body and extends along the direction far away from the battery cell module; and the first magnetic attraction piece is connected with the first convex part and is configured to be magnetically attracted with a battery compartment of the external terminal device. In the battery module, the first convex part is close to the corresponding position of the battery bin, and the first magnetic attraction piece fixes the battery module in the battery bin through magnetic force so as to complete installation; the first convex part is far away from the battery compartment, and the magnetic force between the first magnetic part and the battery compartment is weakened to complete disassembly. In the process of mounting or dismounting the battery module, additional tools and accessories do not need to be used, so that the risk that the battery module is damaged by the tools and the accessories is reduced, and the safety performance of the battery module is improved.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to a battery module and a terminal device. Background Art

[0002] The EU New Battery Regulation requires that battery modules be designed to be more convenient for users to replace. Conventional battery module structures are fixed in the battery compartment by screws. During the installation or removal of the battery module, screwdrivers and loose screw accessories can easily damage the battery module, reducing the safety performance of the battery module. Summary of the invention

[0003] In view of the above situation, it is necessary to provide a battery module that can improve the safety performance of the battery module.

[0004] An embodiment of the present application provides a battery module, which includes a battery cell module, a plastic frame and a first magnetic member. The plastic frame includes a first frame body and a first protrusion. The first frame body is provided with a first cavity, and the battery cell module is arranged in the first cavity. The first protrusion is connected to the first frame body and extends in a direction away from the battery cell module. The first magnetic member is connected to the first protrusion, and the first magnetic member is configured to be magnetically adsorbed to the battery compartment of the external terminal device.

[0005] In the above-mentioned battery module, the first protrusion is connected to the first frame and extends in a direction away from the battery cell module, so that the first protrusion overlaps the wall of the battery compartment. The first magnetic member is connected to the first protrusion, and the first protrusion is used to fix and limit the first magnetic member. In the above-mentioned battery module, the first protrusion is close to the corresponding position of the battery compartment, and the first magnetic member fixes the battery module in the battery compartment through magnetic force to complete the installation; the first protrusion is away from the battery compartment, and the magnetic force between the first magnetic member and the battery compartment is weakened to complete the disassembly. During the installation or disassembly of the battery module, no additional tools and accessories are required to reduce the risk of damage to the battery module by tools and accessories, thereby improving the safety performance of the battery module.

[0006] In some embodiments of the present application, the first frame includes a first side, a second side, a third side, and a fourth side that are connected end to end and surround a first cavity. The first side and the third side are arranged relative to each other along the first direction, and the second side and the fourth side are arranged relative to each other along the second direction. The second direction is perpendicular to the first direction. The first spacing between the first side and the third side along the first direction is D1, and the second spacing between the second side and the fourth side along the second direction is D2, and D1 ≥ D2. The first protrusion is provided on the second side and / or the fourth side to facilitate magnetic adsorption of the first magnetic suction component with the portion of the battery compartment located outside the second side, and / or magnetic adsorption with the portion of the battery compartment located on the fourth side.

[0007] In some embodiments of the present application, the first protrusion is also provided on the first side and / or the third side to facilitate magnetic adsorption of the first magnetic component to a portion of the battery compartment outside the first side and / or to a portion of the battery compartment on the third side.

[0008] In some embodiments of the present application, the first magnetic member includes a plurality of first magnetic units, and in the first protrusion, the plurality of first magnetic units are arranged along the length direction of the first protrusion so that the shape of the first magnetic member is adapted to the first protrusion. Furthermore, the first magnetic unit is formed by arranging and combining the plurality of first magnetic units. The first magnetic unit, as a standard part, is conducive to flexibly forming first magnetic members of various shapes to adapt to first protrusions of different sizes and shapes, which is conducive to simplifying the assembly process of the first magnetic unit.

[0009] In some embodiments of the present application, the first magnetic member includes a plurality of first magnetic units. In the first protrusion, the plurality of first magnetic units are arranged in an array along the length and width directions of the first protrusion, so as to form a specific magnetic field, such as a unilateral magnetic field, by adjusting the arrangement of the first magnetic units.

[0010] In some embodiments of the present application, the first protrusion is provided with a first groove, the first groove is provided with a first opening, the first magnetic component is arranged in the first groove, and the first magnetic component is bonded to the groove wall of the first groove to improve the stability of the first magnetic component fixed in the first protrusion.

[0011] In some embodiments of the present application, the plastic frame further includes a first cover body, the first cover body is connected to the first protrusion and covers the first opening, and the first cover body is snap-fitted to the first protrusion to improve the stability of the first magnetic attraction component fixed in the first protrusion.

[0012] In some embodiments of the present application, the rubber frame is formed integrally by injection molding, the first protrusion is provided with a sealed accommodating chamber, and the first magnetic attraction component is arranged in the accommodating chamber to improve the stability of the first magnetic attraction component fixed in the first protrusion and to simplify the assembly process of the first magnetic attraction unit.

[0013] In some embodiments of the present application, the first protrusion includes a first portion, and along the adsorption direction of the first magnetic member and the battery compartment of the external terminal device, the first portion is configured to be clamped between the first magnetic member and the battery compartment of the external terminal device. The thickness of the first portion is H, 0.3mm≤H≤0.8mm, which is conducive to improving the stability of the first magnetic member fixed in the first protrusion and improving the stability of the battery module fixed in the battery compartment.

[0014] In some embodiments of the present application, the plastic frame further includes a second protrusion, the second protrusion is connected to the first frame body and extends in a direction away from the battery module, and the second protrusion is configured to engage with the battery compartment of the external terminal device. The first magnetic member cooperates with the second protrusion to improve the stability of the battery module fixed in the battery compartment.

[0015] In some embodiments of the present application, the battery module also includes a lifting member, one end of which is connected to the first frame and adjacent to the first protrusion, and the other end of the lifting member is configured to pull the battery module so that a lifting force can be applied to the first protrusion through the lifting member to move the first protrusion away from the battery compartment.

[0016] In some embodiments of the present application, the plastic frame further includes a third protrusion, which is connected to the first protrusion. The third protrusion is configured to form a gripping position with the battery compartment of the external terminal device, so that the user can directly remove the battery module from the battery compartment, reducing the risk of damage to the battery module caused by tools and accessories.

[0017] In some embodiments of the present application, the battery module also includes an insulating member, which is connected to the rubber frame and covers at least a portion of the battery cell module exposed from the rubber frame. The insulating member is made of anti-magnetic material to reduce the risk of the first magnetic attraction member interfering with the battery cell module.

[0018] In some embodiments of the present application, the battery module further includes a protection plate, which is located on one side of the battery module and is electrically connected to the battery module. The plastic frame further includes a second frame body, which is connected to the first frame body and is located between the two first protrusions. The second frame body is provided with a second cavity, and the protection plate is arranged in the second cavity. The second frame body and the first protrusion have a shared space in the third direction to improve the space utilization of the second frame body outside the first frame, which is conducive to improving the energy density of the battery module.

[0019] In some embodiments of the present application, the protective plate extends along a first direction. The battery cell module includes a first battery cell and two second battery cells arranged on both sides of the first battery cell along the first direction. Along the first direction, the pole lug of the second battery cell is arranged toward the first battery cell, and the pole lug of the first battery cell is adjacent to the pole lug of one of the second battery cells, so as to shorten the length of the multiple pole lugs of the battery cell module across the first direction, thereby facilitating the shortening of the length of the protective plate extending along the first direction. The battery module also includes a first adapter and a second adapter connected to the protective plate. The first adapter is arranged between the first battery cell and one of the second battery cells and connects the pole lug of the corresponding second battery cell. The second adapter is arranged between the first battery cell and another second battery cell and connects the pole lug of the corresponding second battery cell. The pole lug of the first battery cell is connected to the first adapter or the second adapter.

[0020] In some embodiments of the present application, along the second direction, multiple tabs of the battery module overlap with the protection board, so that the multiple tabs of the battery module are connected to the protection board. A gap is provided between at least one of the two first protrusions arranged at both ends of the second frame and the first frame, and the gap is located on the side of the second battery cell close to the second frame, so as to free up more space for the external terminal device to install other components.

[0021] The embodiment of the present application also provides a terminal device, which includes a housing, a second magnetic member and any one of the battery modules in the above embodiments. The housing is provided with a battery compartment, the second magnetic member is connected to the compartment wall of the battery compartment, and the first magnetic member and the second magnetic member are magnetically attracted.

[0022] In some embodiments of the present application, the terminal device also includes an electronic device, and the distance between the electronic device and the first magnetic attraction component is greater than or equal to 6 mm to reduce the risk of interference of the first magnetic attraction component on the electronic device.

[0023] In some embodiments of the present application, the first magnetic member includes a plurality of first magnetic units, and in the first protrusion, the plurality of first magnetic units are arranged along the length direction of the first protrusion. The magnetization direction of each first magnetic unit is parallel to the third direction, and along the length direction of the first protrusion, the magnetization directions of two adjacent first magnetic units are opposite, and the third direction is the thickness direction of the battery module. The second magnetic member includes a plurality of second magnetic units, and along the third direction, each second magnetic unit overlaps with a first magnetic unit, and the second magnetic unit and the first magnetic member have opposite magnetic poles arranged opposite to each other and attract each other. When the battery module is misaligned with respect to the battery compartment, the first magnetic unit and the misaligned second magnetic unit have the same magnetic poles arranged opposite to each other and repel each other, so that the first magnetic member and the second magnetic member are reset, and then the battery module is reset relative to the battery compartment.

[0024] In some embodiments of the present application, the first magnetic member includes a plurality of first magnetic units, and along the length direction of the first protrusion, the angle between the magnetization directions of two adjacent first magnetic units is α, 80°≤α≤110°, and the plurality of first magnetic units are arranged according to the Halbach array, and the first magnetic member forms a strong magnetic side at one end facing the second magnetic member, and the first magnetic member forms a weak magnetic side at one end facing away from the second magnetic member. The second magnetic member includes a plurality of second magnetic units, and along the third direction, each second magnetic unit overlaps with a first magnetic unit, and the third direction is the thickness direction of the battery module. The second magnetic member forms a strong magnetic side at one end facing the first magnetic member, and the second magnetic member forms a weak magnetic side at one end facing away from the first magnetic member. The strong magnetic side of the first magnetic member and the strong magnetic side of the second magnetic member are arranged relative to each other and adsorbed to each other to improve the stability of the battery module fixed in the battery compartment. The weak magnetic side of the first magnetic member and the weak magnetic side of the second magnetic member are located outside to reduce the risk of the shell adsorbing external magnetic parts and improve the safety performance of the terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of a battery module in one embodiment of the present application.

[0026] Figure 2 It is a schematic diagram of the disassembled structure of a battery module in one embodiment of the present application.

[0027] Figure 3 yes Figure 1 Schematic cross section along section line AA.

[0028] Figure 4 It is a schematic structural diagram of the first convex portion of the battery module in another embodiment of the present application.

[0029] Figure 5 It is a schematic structural diagram of the first convex portion of the battery module in another embodiment of the present application.

[0030] Figure 6 It is a schematic structural diagram of the first convex portion of the battery module in another embodiment of the present application.

[0031] Figure 7 It is a schematic structural diagram of the first magnetic attraction component of the battery module in another embodiment of the present application.

[0032] Figure 8 It is a structural schematic diagram of the gripping position of a battery module in one embodiment of the present application.

[0033] Fig. 9 It is a schematic diagram of the structure of a battery module in one embodiment of the present application.

[0034] Fig.10 It is a schematic diagram of the structure of a terminal device in an embodiment of the present application.

[0035] Fig.11 yes Fig.10 Schematic cross section along section line BB.

[0036] Fig.12 It is a schematic structural diagram of the cooperation between the first magnetic attraction component and the second magnetic attraction component of the battery module in another embodiment of the present application.

[0037] Fig.13 It is a schematic structural diagram of the cooperation between the first magnetic attraction component and the second magnetic attraction component of the battery module in another embodiment of the present application.

[0038] Main component symbols

[0039] Battery modules 100A, 100B

[0040] Terminal device 200

[0041] Battery cell module 10

[0042] First battery cell 11

[0043] Second battery cell 12

[0044] Tab 111, 121

[0045] Plastic frame 20

[0046] First frame 21

[0047] First cavity 21A

[0048] First side 211

[0049] Second side 212

[0050] The third side 213

[0051] Fourth side 214

[0052] first convex portion 22

[0053] Gap 22A

[0054] The first groove 221

[0055] Adhesive layer 221A

[0056] First opening 222

[0057] Accommodating chamber 223

[0058] Positioning hole 224

[0059] Part 1225

[0060] First cover 23

[0061] Second convex portion 24

[0062] Third convex part 25

[0063] Hand grip 25A

[0064] Covering part 26

[0065] Second frame 27

[0066] Second cavity 27A

[0067] The first magnetic member 30

[0068] The first magnetic unit 31

[0069] Lifting piece 40

[0070] Insulation 50

[0071] Protection plate 60

[0072] Connecting portion 61

[0073] Extension 62

[0074] First adapter 71

[0075] Second adapter 72

[0076] Housing 91

[0077] Battery compartment 911

[0078] Mainboard compartment 912

[0079] The second magnetic member 92

[0080] The second magnetic unit 921

[0081] Motherboard 93

[0082] Electronic devices 94

[0083] First direction X

[0084] The second direction Z

[0085] The third direction Y

[0086] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0087] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0088] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centrally disposed element at the same time. When an element is considered to be "disposed" on another element, it may be directly disposed on the other element or there may be a centrally disposed element at the same time.

[0089] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present application belongs. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0090] It should be understood that, considering the factors of actual processing tolerance, the term "perpendicular" in the technical solution of the present application is used to describe the ideal state between two components. In the actual production or use state, there may be a state that is approximately perpendicular between the two components. For example, in combination with the numerical description, perpendicularity may refer to the angle range between two straight lines being between 90°±10°, perpendicularity may also refer to the dihedral angle range between two planes being between 90°±10°, and perpendicularity may also refer to the angle range between a straight line and a plane being between 90°±10°. The two components described as "perpendicular" may not be absolute straight lines or planes, but may be roughly straight lines or planes. From a macroscopic point of view, the components can be considered to be "straight lines" or "planes" if the overall extension direction is a straight line or a plane.

[0091] An embodiment of the present application provides a battery module, which includes a battery cell module, a plastic frame and a first magnetic member. The plastic frame includes a first frame body and a first protrusion. The first frame body is provided with a first cavity, and the battery cell module is arranged in the first cavity. The first protrusion is connected to the first frame body and extends in a direction away from the battery cell module. The first magnetic member is connected to the first protrusion, and the first magnetic member is configured to be magnetically adsorbed to the battery compartment of the external terminal device.

[0092] In the above-mentioned battery module, the first protrusion is connected to the first frame and extends in a direction away from the battery cell module, so that the first protrusion overlaps the wall of the battery compartment. The first magnetic member is connected to the first protrusion, and the first protrusion is used to fix and limit the first magnetic member. In the above-mentioned battery module, the first protrusion is close to the corresponding position of the battery compartment, and the first magnetic member fixes the battery module in the battery compartment through magnetic force to complete the installation; the first protrusion is away from the battery compartment, and the magnetic force between the first magnetic member and the battery compartment is weakened to complete the disassembly. During the installation or disassembly of the battery module, no additional tools and accessories are required to reduce the risk of damage to the battery module by tools and accessories, thereby improving the safety performance of the battery module.

[0093] Example 1

[0094] The embodiments of the present application are further described below in conjunction with the accompanying drawings.

[0095] Please also read Figure 1 and Figure 2 One embodiment of the present application provides a battery module 100A, the battery module 100A includes a battery cell module 10, a plastic frame 20 and a first magnetic member 30. The plastic frame 20 includes a first frame body 21 and a first convex portion 22, and the first frame body 21 is provided with a first cavity 21A. The battery cell module 10 is arranged in the first cavity 21A, and the first frame body 21 is used to position and protect the battery cell module 10, so as to improve the insulation, waterproof, salt spray corrosion resistance, drop resistance and other performances of the battery module 100A.

[0096] The first protrusion 22 is connected to the first frame 21 and extends in a direction away from the battery module 10 so that the first protrusion 22 can overlap the wall of the battery compartment. The first magnetic member 30 is connected to the first protrusion 22, and the first protrusion 22 is used to fix and limit the first magnetic member 30. The first magnetic member 30 is configured to be magnetically adsorbed to the battery compartment of the external terminal device. Specifically, the battery compartment of the external terminal device corresponding to the first protrusion 22 is provided with a magnetic member or magnetic metal that cooperates with the first magnetic member 30 for adsorption.

[0097] In the above-mentioned battery module 100A, the first protrusion 22 is close to the corresponding position of the battery compartment, and the first magnetic component 30 fixes the battery module 100A in the battery compartment through magnetic force to complete the installation; the first protrusion 22 is away from the battery compartment, and the magnetic force between the first magnetic component 30 and the battery compartment is weakened to complete the disassembly. During the installation or disassembly of the battery module 100A, no additional tools and accessories are required to reduce the risk of damage to the battery module 100A by tools and accessories, thereby improving the safety performance of the battery module 100A. In addition, the above-mentioned battery module 100A also simplifies the operating steps during the installation or disassembly process, which is conducive to shortening the installation or disassembly time of the battery module 100A.

[0098] Please also read Figure 1 and Figure 2 In some embodiments, the first frame 21 includes a first side 211, a second side 212, a third side 213, and a fourth side 214 that are connected end to end and surround the first cavity 21A. The first side 211 and the third side 213 are arranged opposite to each other along the first direction X, and the second side 212 and the fourth side 214 are arranged opposite to each other along the second direction Z. The second direction Z is perpendicular to the first direction X.

[0099] Observed along the third direction Y, the first spacing between the first side 211 and the third side 213 along the first direction X is D1, and the second spacing between the second side 212 and the fourth side 214 along the second direction Z is D2, D1>D2, that is, the first frame 21 is in a rectangular shape, the first side 211 and the third side 213 are two short sides of the rectangular shape, and the second side 212 and the fourth side 214 are two long sides of the rectangular shape. Among them, the third direction Y is the thickness direction of the battery module 100A, and the first direction X, the second direction Z and the third direction Y are perpendicular to each other.

[0100] In some embodiments, the first protrusion 22 is disposed on the second side 212 to facilitate magnetic adsorption of the first magnetic component 30 and the portion of the battery compartment outside the second side 212, and the second side 212 can provide a larger connection area for the first protrusion 22 in the first direction X, thereby flexibly arranging the position of the first protrusion 22.

[0101] Optionally, the second side 212 is provided with a plurality of first protrusions 22, each first protrusion 22 is provided with a first magnetic component 30, and the plurality of first magnetic components 30 of the plurality of first protrusions 22 fix the battery module 100A in the battery compartment through magnetic force to improve the stability of the connection between the battery module 100A and the battery compartment.

[0102] In some embodiments, the first protrusion 22 is disposed on the fourth side 214 to facilitate magnetic adsorption of the first magnetic component 30 and the portion of the battery compartment outside the fourth side 214, and the second side 212 can provide a larger connection area for the first protrusion 22 in the first direction X, so as to facilitate flexible arrangement of the position of the first protrusion 22.

[0103] Optionally, the fourth side 214 is provided with a plurality of first protrusions 22, each first protrusion 22 is provided with a first magnetic component 30, and the plurality of first magnetic components 30 of the plurality of first protrusions 22 fix the battery module 100A in the battery compartment through magnetic force to improve the stability of the connection between the battery module 100A and the battery compartment.

[0104] In some embodiments, the first protrusion 22 is disposed on the first side 211 to facilitate magnetic attraction between the first magnetic element 30 and a portion of the battery compartment outside the first side 211 .

[0105] Optionally, the first side 211 is provided with a plurality of first protrusions 22, each first protrusion 22 is provided with a first magnetic member 30, and the plurality of first magnetic members 30 fix the battery module 100A in the battery compartment through magnetic force to improve the stability of the connection between the battery module 100A and the battery compartment.

[0106] In some embodiments, the first protrusion 22 is disposed on the third side 213 to facilitate magnetic attraction between the first magnetic element 30 and a portion of the battery compartment outside the third side 213 .

[0107] Optionally, the third side 213 is provided with a plurality of first protrusions 22, each first protrusion 22 is provided with a first magnetic member 30, and the plurality of first magnetic members 30 fix the battery module 100A in the battery compartment through magnetic force to improve the stability of the connection between the battery module 100A and the battery compartment.

[0108] It can be understood that in some embodiments, the difference in length dimensions between D1 and D2 is less than 10%, that is, the first frame 21 is roughly square in shape, and the first protrusion 22 is provided on at least one of the first side 211, the second side 212, the third side 213 and the fourth side 214 to facilitate adaptation to the battery compartment of the external terminal device.

[0109] Please also read Figure 1 and Figure 2In some embodiments, the first protrusion 22 is in the shape of a long strip, and the length direction of the first protrusion 22 provided on the second side 212 or the fourth side 214 is parallel to the first direction X, and the length direction of the first protrusion 22 provided on the first side 211 and the third side 213 is parallel to the second direction Z, which is beneficial to reducing the length of the first protrusion 22 extending in the direction away from the battery cell module 10, improving the space utilization of the first protrusion 22 outside the first frame 21, and further beneficial to improving the energy density of the battery module 100A.

[0110] In some embodiments, the first magnetic member 30 includes a plurality of first magnetic units 31, and in the first protrusion 22, the plurality of first magnetic units 31 are arranged along the length direction of the first protrusion 22, so that the shape of the first magnetic member 30 is adapted to the first protrusion 22. In addition, the first magnetic unit 31 is formed by arranging and combining a plurality of first magnetic units 31. The first magnetic unit 31, as a standard part, is conducive to flexibly forming first magnetic members 30 of various shapes to adapt to first protrusions 22 of different sizes and shapes, which is conducive to simplifying the assembly process of the first magnetic unit 31.

[0111] In some embodiments, two adjacent first magnetic members 30 are connected by an adhesive to improve the structural stability of the first magnetic members 30 .

[0112] Please also read Figure 3 In some embodiments, the first protrusion 22 is provided with a first groove 221, the first groove 221 is provided with a first opening 222, the first magnetic member 30 is disposed in the first groove 221, and the first magnetic member 30 is bonded to the groove wall of the first groove 221 to improve the stability of the first magnetic member 30 fixed in the first protrusion 22. Specifically, the first magnetic member 30 and the groove wall of the first groove 221 are bonded by an adhesive layer 221A.

[0113] In some embodiments, glue is disposed in the first groove 221 , and the glue covers the first magnetic member 30 and fills the gap between the first groove 221 and the first magnetic member 30 .

[0114] In some embodiments, the first magnetic member 30 is interference fit with the first groove 221 to improve the stability of the first magnetic member 30 being fixed in the first protrusion 22 .

[0115] See also Figure 4 In some embodiments, the plastic frame 20 also includes a first cover body 23, which is connected to the first protrusion 22 and covers the first opening 222. The first cover body 23 is snap-fitted to the first protrusion 22, and the first cover body 23 and the groove wall of the first groove 221 cooperate to improve the stability of the first magnetic attraction member 30 fixed in the first protrusion 22.

[0116] See also Figure 5In some embodiments, the plastic frame 20 is integrally formed by injection molding, the first protrusion 22 is provided with a sealed accommodation chamber 223, and the first magnetic member 30 is disposed in the accommodation chamber 223 to improve the stability of the first magnetic member 30 fixed in the first protrusion 22 and to simplify the assembly process of the first magnetic unit 31. Specifically, the first magnetic member 30 is pre-embedded in the first protrusion 2 during the injection molding process.

[0117] See also Figure 6 In some embodiments, the first protrusion 22 is provided with a positioning hole 224, and the positioning hole 224 is configured to be engaged with a positioning column in a battery compartment of an external terminal device. The first magnetic member 30 can improve the connection force between the battery module 100A and the battery compartment in the third direction Y, and the positioning hole 224 can improve the stability of the battery module 100A and the battery compartment in the first direction X and the second direction Z. Specifically, the positioning hole 224 is located between two first magnetic units 31 spaced apart.

[0118] See also Figure 7 In some embodiments, the first magnetic member 30 is a whole magnet to improve the stability of the first magnetic member 30 fixed in the first protrusion 22 and to simplify the assembly process of the first magnetic unit 31.

[0119] Please also read Figure 1 and Figure 3 In some embodiments, the first protrusion 22 includes a first portion 225, and along the adsorption direction of the first magnetic member 30 and the battery compartment of the external terminal device, the first portion 225 is configured to be clamped between the first magnetic member 30 and the battery compartment of the external terminal device, and the thickness of the first portion 225 is H, 0.3mm≤H≤0.8mm. When H is too small (H<0.3mm), the first portion 225 has a weak supporting effect on the first magnetic member 30, affecting the stability of the first magnetic member 30 fixed in the first protrusion 22; when H is too large (H>0.8mm), the magnetic force between the first magnetic member 30 and the battery compartment will be weakened, affecting the stability of the battery module 100A fixed in the battery compartment. By 0.3mm≤H≤0.8mm, it is beneficial to improve the stability of the first magnetic member 30 fixed in the first protrusion 22, and improve the stability of the battery module 100A fixed in the battery compartment.

[0120] Optionally, H is 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, and any other value within the range of 0.3 mm ≤ H ≤ 0.8 mm.

[0121] Optionally, the first protrusion 22 overlaps the wall of the battery compartment along the third direction Y, and the first part 225 is the first protrusion 22 located in the third direction Y between the first magnetic attraction component 30 and the battery compartment of the external terminal device.

[0122] See also Figure 8 In some embodiments, the plastic frame 20 further includes a third protrusion 25, the third protrusion 25 is connected to the first protrusion 22, and the third protrusion 25 is configured to form a gripping position 25A with the battery compartment of the external terminal device, so that the user can directly pull out the battery module 100A in the battery compartment, reducing the risk of damage to the battery module 100A caused by tools and accessories. Specifically, along the length direction of the first protrusion 22, the third protrusion 25 is connected to at least one end of the first protrusion 22, and the third protrusion 25 is spaced from the compartment wall of the battery compartment, and the gap between the third protrusion 25 and the compartment wall of the battery compartment forms the gripping position 25A.

[0123] In some embodiments, the battery module 100A further includes a lifting member 40, one end of which is connected to the first frame 21 and adjacent to the first protrusion 22, and the other end of which is configured to lift the battery module 100A. The lifting member 40 is adjacent to the first protrusion 22, so that the lifting member 40 can apply a pulling force to the first protrusion 22 to keep the first protrusion 22 away from the battery compartment.

[0124] In some embodiments, the material of the lifting member 40 includes at least one of acetate cloth and PET (Polyethyleneterephthalate, polyester resin).

[0125] In some embodiments, the lifting members 40 are disposed on one of the first side 211, the second side 212, the third side 213 and the fourth side 214, and the number is the same as the first protrusions 22 located on the same side, and each lifting member 40 is adjacent to a first protrusion 22, so that the battery module 100A is evenly stressed during the process of disassembling the battery module 100A.

[0126] In some embodiments, the first frame 21 is provided with a thinning portion, and the lifting member 40 is connected to the thinning portion to reduce the space occupied by the lifting member 40 outside the first frame 21, thereby facilitating the improvement of the energy density of the battery module 100A. Specifically, at least one surface of the first frame 21 along the third direction Y is provided with a first recessed portion sunken along the third direction Y, and the peripheral side surface of the first frame 21 (the peripheral side surface refers to the first side edge 211, the second side edge 212, the third side edge 213 and the fourth side edge 214) is provided with a second recessed portion sunken in the direction toward the battery cell module 10, the first recessed portion is connected to the second recessed portion, and at least part of the lifting member 40 is provided in the first recessed portion and the second recessed portion.

[0127] Please refer again Figure 1 and Figure 2In some embodiments, the battery module 100A further includes an insulating member 50, which is connected to the plastic frame 20 and covers at least a portion of the battery cell module 10 exposed from the plastic frame 20. The insulating member 50 is made of anti-magnetic material to reduce the risk of the first magnetic attraction member 30 interfering with the battery cell module 10.

[0128] In some embodiments, the lifting member 40 is configured to lift one end of the battery module 100A and adhere it to the insulating member 50 to reduce the risk of interference between the lifting member 40 and the battery cell module 10 .

[0129] In some embodiments, the material of the insulating member 50 includes at least one of PET (Polyethylene terephthalate), PI (Polyimide), and PC (Polycarbonate).

[0130] In some embodiments, the battery module 100A also includes a protection board 60, which is connected between the battery cell module 10 and the main board of the external terminal device. The protection board 60 is provided with a protection circuit, which can provide but is not limited to providing protection functions such as overcharging, over-discharging, overcurrent, short circuit and anti-counterfeiting to the battery cell module 10.

[0131] In some embodiments, the cell module 10 includes a first cell 11 and a second cell 12 arranged along a first direction X. The protection plate 60 extends along a second direction Z, and the protection plate 60 includes a connection portion 61 and an extension portion 62. The connection portion 61 is disposed in the first cavity 21A and is located between the first cell 11 and the second cell 12, and the tabs 111 of the first cell 11 and the tabs 121 of the second cell 12 face the protection plate 60 and are connected to the connection portion 61. The extension portion 62 is connected to the connection portion 61 and extends out of the first frame 21 to facilitate electrical connection with the mainboard of the external terminal device.

[0132] In some embodiments, the plastic frame 20 further includes a covering portion 26 connected to the first frame body 21 , the covering portion 26 is located in the first cavity 21A and covers the connecting portion 61 and at least part of the battery module 10 to improve the stability of the battery module 10 and the connecting portion 61 in the first cavity 21A.

[0133] Example 2

[0134] See also Fig. 9 One embodiment of the present application further provides a battery module 100B. The battery module 100B differs from the battery module 100A in the arrangement of the battery cell module 10 , the first magnetic unit 31 , and the protection plate 60 .

[0135] The first magnetic member 30 includes a plurality of first magnetic units 31, which are arranged in an array along the length and width directions of the first protrusion 22, so as to form a specific magnetic field, such as a unilateral magnetic field, by adjusting the arrangement of the first magnetic units 31.

[0136] In some embodiments, the plastic frame 20 further includes a second frame 27, which is connected to the first frame 21 and is located between the two first protrusions 22. The second frame 27 is provided with a second cavity 27A, and the protective plate 60 is disposed in the second cavity 27A. When the second frame 27 is connected to the second side 212 or the fourth side 214, along the first direction X, the second frame 27 and the first protrusion 22 overlap, and the second frame 27 and the first protrusion 22 have a shared space in the third direction Y and the second direction Z, so as to improve the space utilization of the second frame 27 outside the first frame 21, thereby facilitating the improvement of the energy density of the battery module 100B. When the second frame 27 is connected to the first side 211 or the third side 213, the second frame 27 and the first convex portion 22 overlap along the second direction Z, and the second frame 27 and the first convex portion 22 have a common space in the third direction Y and the first direction X, so as to improve the space utilization of the second frame 27 outside the first frame 21, thereby facilitating the improvement of the energy density of the battery module 100B. It should be noted that the second frame 27 is provided on the fourth side 214 for description in this embodiment.

[0137] In some embodiments, the second frame 27 is disposed on the fourth side 214 and between the two first protrusions 22 , and the protection plate 60 extends along the first direction X.

[0138] Along the second direction Z, the multiple tabs of the battery cell module 10 overlap with the protection plate 60 , so that the multiple tabs of the battery cell module 10 are connected to the protection plate 60 .

[0139] The cell module 10 includes a first cell 11 and two second cells 12 disposed on both sides of the first cell 11 along a first direction X. Along the first direction X, the tabs 121 of the second cell 12 are disposed toward the first cell 11, and the tabs 111 of the first cell 11 are adjacent to the tabs 121 of one of the second cells 12, so as to shorten the length of the multiple tabs of the cell module 10 along the first direction X, thereby facilitating shortening the length of the protective plate 60 extending along the first direction X.

[0140] The battery module 100 also includes a first adapter 71 and a second adapter 72 connected to the protective plate 60. Along the first direction X, the first adapter 71 is arranged between the first battery cell 11 and one of the second battery cells 12 and is connected to the corresponding pole ear 121 of the second battery cell 12. The second adapter 72 is arranged between the first battery cell 11 and another second battery cell 12 and is connected to the corresponding pole ear 121 of the second battery cell 12. The pole ear 111 of the first battery cell 11 is connected to the first adapter 71 or the second adapter 72.

[0141] Optionally, the first adapter 71 and the second adapter 72 are flexible circuit boards.

[0142] It can be understood that, in some embodiments, the first battery cell 11 is provided with pole ears 111 on both sides along the first direction X, the first adapter 71 connects the pole ears 121 of one of the second battery cells 12 and the pole ears 111 of the first battery cell 11 close to the first adapter 71, and the second adapter 72 connects the pole ears 121 of another second battery cell 12 and the pole ears 111 of the first battery cell 11 close to the second adapter 72.

[0143] In some embodiments, along the first direction X, the sum of the lengths of the second frame 27 and the two first protrusions 22 disposed at both ends of the second frame 27 is less than the length of the fourth side 214. A notch 22A is provided between at least one of the two first protrusions 22 disposed at both ends of the second frame 27 and the first frame 21, and the notch 22A is located on a side of the second battery cell 12 close to the second frame 27, so as to free up more space for the external terminal device to install other components.

[0144] In some embodiments, along the first direction X, the length of the notch 22A is N, the length of the second battery cell 12 is M, and 0.2<N / M<0.8. When N / M is small (less than 0.2), it will result in less space, which is not conducive to the installation of other components by the external terminal device. When N / M is large (greater than 0.8), the length of the second frame 27 in the first direction X cannot meet the length requirement of the protection plate 60. By limiting 0.2<N / M<0.8, the length of the second frame 27 in the first direction X meets the length requirement of the protection plate 60, and it is convenient for the external terminal device to install other components.

[0145] Optionally, N / M is 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75 and any other value within the range of 0.2<N / M<0.8.

[0146] Furthermore, 0.4<N / M<0.6, so that the length of the second frame body 27 in the first direction X further meets the length requirement of the protection plate 60 and facilitates the installation of other components in the external terminal device.

[0147] In some embodiments, the plastic frame 20 further includes a second protrusion 24, which is connected to the first frame body 21 and extends in a direction away from the battery module 10, and the second protrusion 24 is configured to be engaged with the battery compartment of the external terminal device. The first magnetic member 30 cooperates with the second protrusion 24 to improve the stability of the battery module 100 fixed in the battery compartment. Specifically, the first protrusion 22 is provided on the fourth side 214, and the second protrusion 24 is provided on the second side 212, so that the battery module 100 is evenly stressed on both sides of the first direction X.

[0148] Except for the above differences, the parameters of the battery module 100B and the battery module 100A are substantially the same, and reference may be made to the description of the battery module 100A.

[0149] Example 3

[0150] See also Fig.10 One embodiment of the present application further provides a terminal device 200, comprising the battery module (100A, 100B) in any of the above embodiments.

[0151] The terminal device 200 further includes a housing 91 and a second magnetic member 92. The housing 91 is provided with a battery compartment 911, the second magnetic member 92 is connected to the compartment wall of the battery compartment 911, and the first magnetic member 30 and the second magnetic member 92 are magnetically attracted to improve the stability of the battery module (100A, 100B) fixed in the battery compartment 911.

[0152] In some embodiments, the terminal device 200 further includes a mainboard 93. The housing 91 is fixed in a mainboard compartment 912. The protection plate 60 of the terminal device 200 is adjacent to the mainboard 93 and connected to the mainboard 93.

[0153] In some embodiments, the first magnetic member 30 and the second magnetic member 92 are attracted in a third direction Y. The first protrusion 22 overlaps the wall of the battery compartment 911 along the third direction Y, and the first magnetic member 30 and the second magnetic member 92 overlap along the third direction Y.

[0154] See also Fig.11 In some embodiments, the first magnetic member 30 includes a plurality of first magnetic units 31, and in the first protrusion 22, the plurality of first magnetic units 31 are arranged along the length direction of the first protrusion 22. The magnetization direction of each first magnetic unit 31 is parallel to the third direction Y. Along the length direction of the first protrusion 22, the magnetization directions of two adjacent first magnetic units 31 are consistent.

[0155] The second magnetic member 92 includes a plurality of second magnetic units 921. Along the third direction Y, each second magnetic unit 921 overlaps with a first magnetic unit 31. The second magnetic unit 921 and the first magnetic member 30 have opposite magnetic poles and are attracted to each other.

[0156] It should be noted that the magnetic unit has two magnetic poles, namely the magnetic north pole (also known as the N pole) and the magnetic south pole (also known as the S pole). The magnetic strength of each part of the magnetic unit is different, and the magnetic pole is the part with the strongest magnetic strength on the magnet. There is interaction between the magnetic poles, with the same poles repelling each other and the opposite poles attracting each other.

[0157] See also Fig.12 In some embodiments, the first magnetic member 30 includes a plurality of first magnetic units 31, and in the first protrusion 22, the plurality of first magnetic units 31 are arranged along the length direction of the first protrusion 22. The magnetization direction of each first magnetic unit 31 is parallel to the third direction Y. Along the length direction of the first protrusion 22, the magnetization directions of two adjacent first magnetic units 31 are opposite.

[0158] The second magnetic member 92 includes a plurality of second magnetic units 921. Along the third direction Y, each second magnetic unit 921 overlaps with a first magnetic unit 31, and the second magnetic unit 921 and the first magnetic member 30 have opposite magnetic poles arranged opposite to each other and attract each other. When the battery module (100A, 100B) is misaligned relative to the battery compartment 911, the first magnetic unit 31 and the misaligned second magnetic unit 921 have the same magnetic poles arranged opposite to each other and repel each other, so that the first magnetic member 30 and the second magnetic member 92 are reset, and then the battery module (100A, 100B) is reset relative to the battery compartment 911.

[0159] See also Fig.13 In some embodiments, the first magnetic member 30 includes a plurality of first magnetic units 31. In the first protrusion 22, along the length direction of the first protrusion 22, the angle between the magnetization directions of two adjacent first magnetic units 31 is α, 80°≤α≤110°, and the plurality of first magnetic units 31 are arranged in a Halbach array. The end of the first magnetic member 30 facing the second magnetic member 92 forms a strong magnetic side, and the end of the first magnetic member 30 facing away from the second magnetic member 92 forms a weak magnetic side, and the magnetic field strength of the strong magnetic side is stronger than that of the weak magnetic side.

[0160] Optionally, α is 80°, 81°, 82°, 83°, 84°, 85°, 86°, 87°, 88°, 90°, 91°, 92°, 93°, 94°, 95°, 96°, 97°, 98°, 99°, 100°, 101°, 102°, 103°, 104°, 105°, 106°, 107°, 108°, 109°, 110° and any other value in the range of 80°≤α≤110°.

[0161] The second magnetic member 92 includes a plurality of second magnetic units 921. Each second magnetic unit 921 overlaps with a first magnetic unit 31 along the third direction Y. The second magnetic units 921 are arranged in a Halbach array, and the magnetization direction of the second magnetic unit 921 is opposite to the magnetization direction of the corresponding first magnetic unit 31. The end of the second magnetic member 92 facing the first magnetic member 30 forms a strong magnetic side, and the end of the second magnetic member 92 facing away from the first magnetic member 30 forms a weak magnetic side, and the magnetic field strength of the strong magnetic side is stronger than the magnetic field strength of the weak magnetic side.

[0162] The strong magnetic side of the first magnetic component 30 and the strong magnetic side of the second magnetic component 92 are arranged opposite to each other and adsorbed to each other to improve the stability of the battery module (100A, 100B) fixed in the battery compartment 911. The weak magnetic side of the first magnetic component 30 and the weak magnetic side of the second magnetic component 92 are located on the outside to reduce the risk of the shell 91 adsorbing external magnetic parts, thereby improving the safety performance of the terminal device 200.

[0163] Please refer again Fig.10 The terminal device 200 further includes an electronic device 94, and the distance between the electronic device 94 and the first magnetic member 30 is greater than or equal to 6 mm, so as to reduce the risk of the first magnetic member 30 interfering with the electronic device 94. The electronic device 94 includes a speaker.

[0164] It is understandable that, in some embodiments, the adsorption direction of the first magnetic member 30 and the second magnetic member 92 is the first direction X or the second direction Z.

[0165] In the above-mentioned battery module (100A, 100B) and terminal device 200, the first protrusion 22 is connected to the first frame 21 and extends in a direction away from the battery cell module 10, so that the first protrusion 22 can overlap the wall of the battery compartment. The first magnetic member 30 is connected to the first protrusion 22, and the first protrusion 22 is used to fix and limit the first magnetic member 30. The first magnetic member 30 is configured to be magnetically adsorbed to the battery compartment of the external terminal device. In the above-mentioned battery module (100A, 100B), the first protrusion 22 is close to the corresponding position of the battery compartment, and the first magnetic member 30 fixes the battery module (100A, 100B) in the battery compartment through magnetic force to complete the installation; the first protrusion 22 is away from the battery compartment, and the magnetic force between the first magnetic member 30 and the battery compartment is weakened to complete the disassembly. No additional tools or accessories are required during the installation or removal of the battery modules (100A, 100B), thereby reducing the risk of damage to the battery modules (100A, 100B) caused by tools or accessories, and improving the safety performance of the battery modules (100A, 100B).

[0166] In addition, those skilled in the art may also make other changes within the spirit of the present application. Of course, these changes made according to the spirit of the present application should be included in the scope disclosed in the present application.

Claims

1. A battery module, characterized in that: The battery module comprises: Battery cell module; A plastic frame, the plastic frame comprising a first frame body and a first convex portion, the first frame body is provided with a first cavity, the battery module is arranged in the first cavity, the first convex portion is connected to the first frame body and extends in a direction away from the battery module; A first magnetic member, wherein the first magnetic member is connected to the first protrusion, and the first magnetic member is configured to be magnetically attracted to a battery compartment of an external terminal device.

2. The battery module according to claim 1, characterized in that: The first frame includes a first side, a second side, a third side, and a fourth side connected end to end and surrounding the first cavity, the first side and the third side are arranged opposite to each other along a first direction, the second side and the fourth side are arranged opposite to each other along a second direction, the second direction is perpendicular to the first direction, a first distance between the first side and the third side along the first direction is D1, a second distance between the second side and the fourth side along the second direction is D2, and D1≥D2; The first protrusion is arranged on the second side and / or the fourth side.

3. The battery module according to claim 2, characterized in that: The first protrusion is also arranged on the first side edge and / or the third side edge.

4. The battery module according to claim 1, characterized in that: The first magnetic attraction member includes a plurality of first magnetic attraction units, and in the first protrusion, the plurality of first magnetic attraction units are arranged along a length direction of the first protrusion.

5. The battery module according to claim 3, characterized in that: The first magnetic attraction member includes a plurality of first magnetic attraction units. In the first protrusion, the plurality of first magnetic attraction units are arranged in an array along the length direction and the width direction of the first protrusion.

6. The battery module according to claim 1, characterized in that: The first convex portion is provided with a first groove, the first groove is provided with a first opening, the first magnetic attraction member is arranged in the first groove, and the first magnetic attraction member is bonded to the groove wall of the first groove.

7. The battery module according to claim 6, characterized in that: The plastic frame further includes a first cover body, the first cover body is connected to the first protrusion and covers the first opening, and the first cover body is clamped with the first protrusion.

8. The battery module according to claim 1, characterized in that: The plastic frame is integrally formed by injection molding, the first convex portion is provided with a sealed accommodating chamber, and the first magnetic attraction member is arranged in the accommodating chamber.

9. The battery module according to claim 1, characterized in that: The first protrusion includes a first part, and along the adsorption direction of the first magnetic member and the battery compartment of the external terminal device, the first part is configured to be clamped between the first magnetic member and the battery compartment of the external terminal device, and the thickness of the first part is H, 0.3mm≤H≤0.8mm.

10. The battery module according to claim 1, characterized in that: The plastic frame further includes a second protrusion, which is connected to the first frame body and extends in a direction away from the battery module. The second protrusion is configured to be engaged with a battery compartment of an external terminal device.

11. The battery module according to claim 1, characterized in that: The battery module further includes a lifting member, one end of which is connected to the first frame and adjacent to the first protrusion, and the other end of which is configured to lift the battery module.

12. The battery module according to claim 1, characterized in that: The plastic frame further includes a third protrusion, the third protrusion is connected to the first protrusion, and the third protrusion is configured to form a gripping position with a battery compartment of an external terminal device.

13. The battery module according to claim 1, characterized in that: The battery module also includes an insulating member, which is connected to the plastic frame and covers at least a portion of the battery cell module exposed from the plastic frame. The insulating member is made of antimagnetic material.

14. The battery module according to claim 2, characterized in that: The battery module further includes a protection plate, which is located on one side of the battery module and is electrically connected to the battery module; The plastic frame further includes a second frame body, the second frame body is connected to the first frame body and is located between the two first protrusions, the second frame body is provided with a second cavity, and the protection plate is arranged in the second cavity.

15. The battery module according to claim 14, characterized in that: The protection plate extends along the first direction; The battery cell module includes a first battery cell and two second battery cells arranged on both sides of the first battery cell along the first direction, wherein the tabs of the second battery cells are arranged toward the first battery cell along the first direction, and the tabs of the first battery cell are adjacent to one of the tabs of the second battery cells; The battery module also includes a first adapter and a second adapter connected to the protective plate, the first adapter is arranged between the first battery cell and one of the second battery cells and connected to the corresponding pole lug of the second battery cell, the second adapter is arranged between the first battery cell and another second battery cell and connected to the corresponding pole lug of the second battery cell, and the pole lug of the first battery cell is connected to the first adapter or the second adapter.

16. The battery module according to claim 15, characterized in that: Along the second direction, a plurality of tabs of the battery cell module overlap with the protection plate; A notch is provided between at least one of the two first protrusions disposed at both ends of the second frame and the first frame, and the notch is located on a side of the second battery cell close to the second frame.

17. A terminal device, characterized in that: The terminal device includes a shell, a second magnetic component and a battery module as described in any one of claims 1 to 16, the shell is provided with a battery compartment, the second magnetic component is connected to the compartment wall of the battery compartment, and the first magnetic component and the second magnetic component are magnetically adsorbed.

18. The terminal device according to claim 17, characterized in that The terminal device also includes an electronic component, and the distance between the electronic component and the first magnetic attraction component is greater than or equal to 6 mm.

19. The terminal device according to claim 17, characterized in that The first magnetic member includes a plurality of first magnetic units, and in the first convex portion, the plurality of first magnetic units are arranged along the length direction of the first convex portion, and the magnetization direction of each first magnetic unit is parallel to the third direction. Along the length direction of the first convex portion, the magnetization directions of two adjacent first magnetic units are opposite, and the third direction is the thickness direction of the battery module; The second magnetic attraction member includes a plurality of second magnetic attraction units. Along the third direction, each of the second magnetic attraction units overlaps with one of the first magnetic attraction units. The second magnetic attraction units and the first magnetic attraction member have opposite magnetic poles arranged opposite to each other and are attracted to each other.

20. The terminal device according to claim 17, characterized in that The first magnetic member includes a plurality of first magnetic units, and along the length direction of the first protrusion, the angle between the magnetization directions of two adjacent first magnetic units is α, 80°≤α≤110°, and the plurality of first magnetic units are arranged according to a Halbach array, and one end of the first magnetic member facing the second magnetic member forms a strong magnetic side, and one end of the first magnetic member facing away from the second magnetic member forms a weak magnetic side; The second magnetic attraction member includes a plurality of second magnetic attraction units. Along a third direction, each of the second magnetic attraction units overlaps with a first magnetic attraction unit. The third direction is the thickness direction of the battery module. The second magnetic attraction member forms a strong magnetic side at one end facing the first magnetic attraction member, and forms a weak magnetic side at one end of the second magnetic attraction member away from the first magnetic attraction member.

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