Connection, battery pack and electric device

Abstract

The application discloses a connecting piece, which comprises a first insulating piece and a second insulating piece arranged along a first direction, and a plurality of spaced conductive pieces arranged between the first insulating piece and the second insulating piece, each of the conductive pieces comprising a first connecting part and a second connecting part, the first connecting part and the second connecting part are both used for connecting with other conductive pieces, and the second connecting parts of the plurality of conductive pieces are spaced along a second direction. The connecting piece is connected with other conductive pieces through the first connecting part and the second connecting part, the use of a relay board, a sampling terminal and a pressure sampling wire harness is reduced, and the quantity of materials is reduced. The application further provides a battery pack adopting the connecting piece and a power utilization device adopting the battery pack.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage, in particular to a connecting piece, a battery pack and an electrical equipment. BACKGROUND

[0002] The battery usually connects the pole lug of the plurality of battery cells through the adapter plate and the sampling terminal on the adapter plate to realize the series connection of the soft package battery cell, and collects the voltage through the pressure sampling wire harness connected to the adapter plate. The materials used are more, and the production cost is high. SUMMARY

[0003] Therefore, it is necessary to provide a connecting piece, a battery pack and an electrical equipment to reduce the use of the adapter plate, the sampling terminal and the pressure sampling wire harness, and reduce the amount of materials used.

[0004] Embodiments of the present application provide a connecting piece. The connecting piece includes a first insulating piece and a second insulating piece arranged along a first direction, and a plurality of spaced conductive pieces arranged between the first insulating piece and the second insulating piece. Each conductive piece includes a first connecting part and a second connecting part. The first connecting part and the second connecting part are both used to connect with other conductive pieces. The second connecting parts of the plurality of conductive pieces are spaced along a second direction.

[0005] By connecting the first connecting part and the second connecting part with other conductive pieces, the use of the adapter plate, the sampling terminal and the pressure sampling wire harness is reduced, and the number of materials is reduced.

[0006] Further, in some embodiments of the present application, the second direction is perpendicular to the first direction.

[0007] Further, in some embodiments of the present application, the third connecting part includes a third sub-connecting part, the third sub-connecting part is arranged to be bent towards the side where the first insulating piece is located along the second direction, and the third sub-connecting part connects the second connecting part. The bent third sub-connecting part increases the distance between adjacent second connecting parts, reduces the risk of short circuit caused by the contact between adjacent second connecting parts, and facilitates the welding of the second connecting part with the circuit board.

[0008] Further, in some embodiments of the present application, the first insulating piece has a plurality of first openings, and the second insulating piece has a plurality of second openings. Along the first direction, the projection of the first opening at least partially overlaps the projection of the second opening.

[0009] Further, in some embodiments of the present application, along the first direction, the projection of the second opening is located within the projection of the first opening. By reducing the opening area of the second opening, the risk of short circuit caused by the falling of the object onto the second surface located in the second opening is reduced.

[0010] Further, in some embodiments of the application, the first connecting part comprises a first connecting region and a first extending region, the first connecting region is located within the first opening when viewed along the first direction, the first connecting region is located within the second opening when viewed along a direction opposite to the first direction, the first extending region extends outwardly from the outer periphery of the first connecting region, and the first extending region is located between the first insulating member and the second insulating member.

[0011] Further, in some embodiments of the application, the connecting member further comprises a third insulating member. The third insulating member is connected to the side of the second insulating member away from the first insulating member, and the projection of the third insulating member overlaps the projection of the third connecting part and / or the second connecting part along the first direction. By connecting the plurality of second connecting parts through the third insulating member, the possibility of deformation of the plurality of second connecting parts is reduced, and the structural strength of the connecting member is increased. By connecting the third connecting part through the third insulating member, the structural strength of the connecting member is further increased, and the possibility of deformation of the connecting member is reduced.

[0012] Further, in some embodiments of the application, the projection of the third insulating member covers the projection of the third sub-connecting part along the first direction.

[0013] Further, in some embodiments of the application, the projection of the third insulating member covers part of the projection of the second connecting part along the first direction.

[0014] Further, in some embodiments of the application, the third connecting part comprises a second region connecting the third sub-connecting part along the first direction, and the projection of the third insulating member overlaps the projection of the second region along the first direction. The structural strength of the connecting member is further increased, and the possibility of deformation of the connecting member is reduced.

[0015] Further, in some embodiments of the application, at least one third connecting part is provided with a first region extending to between two adjacent first connecting parts along the second direction, so as to increase the structural strength of the connecting member and reduce the bending of the connecting member along the second direction.

[0016] Embodiments of the application also provide a battery pack comprising a housing assembly, a cell module, and the connecting member of any of the above embodiments. The cell module is arranged in the housing assembly and connected to the connecting member.

[0017] Further, in some embodiments of the application, the cell module comprises a plurality of cells arranged in a third direction. The cell comprises a cell housing, an electrode assembly arranged in the cell housing, and an electrode terminal connected to the electrode assembly and led out of the cell housing. The first connecting part is connected to the electrode terminal.

[0018] Further, in some embodiments of the application, the third direction is perpendicular to both the first direction and the second direction.

[0019] Further, in some embodiments of the present application, the electrode terminal has a welding portion. In the first direction, the projection of the welding portion is located within the projection of the first connecting region, so that the welding portion is located within the edge of the first connecting region, facilitating welding of the welding portion to the first connecting region and improving the yield of welding.

[0020] Further, in some embodiments of the present application, in the first direction, the projections of the electrode terminals of adjacent battery cells are located apart from each other and connected by the first connecting portion.

[0021] Further, in some embodiments of the present application, the battery cell shell comprises a first part and a second part. The electrode assembly is arranged in the first part. The second part is connected to the first part. The electrode terminal extends from the second part. The first part and the second part cooperatively form a first recess. In the direction opposite to the first direction, the projection of the third connecting portion is at least partially arranged in the first recess, reducing the space occupied by the connecting member.

[0022] Further, in some embodiments of the present application, the battery pack further comprises a fourth insulating member. The fourth insulating member is arranged in the first recess and located between the adjacent electrode terminals.

[0023] By arranging the fourth insulating member, the risk of short circuit between the adjacent electrode terminals is reduced, and the connecting member is facilitated to be placed, reducing the vibration of the connecting member.

[0024] Further, in some embodiments of the present application, the battery pack further comprises a first structural member and a circuit board. The circuit board is connected to the first structural member. The circuit board is provided with a first connecting hole. The first structural member is provided with a second recess. The third connecting portion is arranged in the second recess. The second connecting portion is arranged in the first connecting hole.

[0025] By arranging the second recess to position the third connecting portion, the positioning accuracy in the assembly process is improved, facilitating assembly.

[0026] An embodiment of the present application also provides a power consumption device comprising the battery pack of any of the above embodiments.

[0027] The battery pack and the power consumption device described above are connected to other conductive members through the first connecting portion and the second connecting portion, reducing the use of adapter plates, sampling terminals and pressure sampling wire harnesses, and reducing the number of materials. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 FIG. 1 shows a structural schematic diagram of a connecting member in some embodiments.

[0029] Figure 2 FIG. 2 shows a structural schematic diagram of the connecting member from another perspective in some embodiments.

[0030] Figure 3 FIG. 3 shows an exploded structural schematic diagram of the connecting member in some embodiments.

[0031] Figure 4 An exploded view of the battery pack is shown in some embodiments.

[0032] Figure 5 Schematic diagrams of the battery cell module structure are shown in some embodiments.

[0033] Figure 6 Schematic diagrams of the battery cell structure are shown in some embodiments.

[0034] Figure 7 Cross-sectional schematic diagrams of the battery packs in some embodiments are shown.

[0035] Figure 8 A structural schematic diagram of the second component from another perspective is shown in some embodiments.

[0036] Figure 9 Cross-sectional schematic diagrams of connectors and battery cell modules are shown in some embodiments.

[0037] Figure 10 It shows Figure 9 A partially enlarged schematic diagram of the connecting component and the battery cell module.

[0038] Figure 11 Cross-sectional schematic diagrams of connectors and battery cell modules are shown in other embodiments.

[0039] Figure 12 A schematic diagram of the second structural component is shown in some embodiments.

[0040] Figure 13 A partial structural schematic diagram of the battery pack is shown in some embodiments.

[0041] Figure 14 A schematic diagram of the structure of the first housing in some embodiments is shown.

[0042] Figure 15 A schematic diagram of the electrical equipment in one embodiment is shown.

[0043] Explanation of key component symbols:

[0044] Connector 100

[0045] First insulating component 10

[0046] First opening 11

[0047] Second insulating component 20

[0048] Second opening 21

[0049] Conductive component 30

[0050] First connecting part 31

[0051] First connecting region 31a

[0052] First surface 311

[0053] Second surface 312

[0054] First extension region 31b

[0055] Second connecting portion 32

[0056] Third connecting portion 33

[0057] Third sub-connecting portion 33a

[0058] First region 331

[0059] Second region 332

[0060] Third insulating member 40

[0061] Through hole 101

[0062] Third opening 102

[0063] First protrusion 103

[0064] Battery pack 1000

[0065] Battery cell module 200

[0066] Battery cell 200a

[0067] First battery cell 200a1

[0068] Battery cell housing 201

[0069] First portion 201a

[0070] Second portion 201b

[0071] First recess 201c

[0072] Electrode terminal 202

[0073] First terminal 202a

[0074] Second terminal 202b

[0075] Welding portion 202c

[0076] Housing assembly 300

[0077] First housing 301

[0078] Second housing 302

[0079] Third protrusion 301a

[0080] Fifth opening 3011

[0081] Protrusion 333

[0082] Fourth insulating member 400

[0083] First structural member 500

[0084] Accommodation portion 501

[0085] Fourth opening 502

[0086] Second recess 503

[0087] Second protrusion 504

[0088] Circuit board 600

[0089] First connecting hole 601

[0090] Second connecting hole 602

[0091] Electric device 2000

[0092] First direction X

[0093] Second direction Y

[0094] Third direction Z

[0095] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0096] 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 some of the embodiments of the present application, but not all the embodiments of the present application.

[0097] When one component is considered to be "provided on" another component, it can be directly provided on the other component or a middle component can be present. When one component is considered to be "connected" to another component, it can be directly connected to the other component or a middle component can be present.

[0098] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0099] It can be understood that when two elements are arranged in parallel / vertically, there can be a certain angle between the two elements, and the angle between the two elements allows a tolerance of 0-±5%, for example, when the two elements are vertically present, one of the elements is tilted towards or away from the other element, and the tolerance range between the two elements is greater than 0° and less than or equal to 4.5°. When the projections of the two elements are the same or overlap, a tolerance of 0-±10% is allowed between the two elements, for example, where the projection shape of one element is the same as that of the other element, and the projection area has a tolerance of 0-±10%.

[0100] Some embodiments of the present application will be described in detail below with reference to the drawings. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0101] Please refer to Figure 1 , Figure 2 and Figure 3 , an embodiment of the present application provides a connecting piece 100, comprising a first insulating piece 10, a second insulating piece 20 and a plurality of conductive pieces 30. The first insulating piece 10 and the second insulating piece 20 are arranged in sequence along a first direction X. The plurality of conductive pieces 30 are arranged at intervals between the first insulating piece 10 and the second insulating piece 20. Each conductive piece 30 comprises a first connecting part 31 and a second connecting part 32, wherein the first connecting part 31 and the second connecting part 32 are both used for connecting other conductive pieces. The second connecting parts 32 of the plurality of conductive pieces 30 are arranged at intervals along a second direction Y. In an embodiment, the second direction Y is perpendicular to the first direction X.

[0102] In an embodiment, the other conductive pieces include electrode terminals of the battery cell, and the first connecting part 31 is at least partially used for connecting the electrode terminals. In an embodiment, the second connecting part 32 is used for connecting a circuit board. In an embodiment, the conductive piece 30 connects the electrode terminals through the first connecting part 31 and connects the circuit board through the second connecting part 32, thereby realizing the connection between the battery cell and the circuit board, and further realizing voltage acquisition, reducing the use of sampling terminals and voltage sampling wire harnesses, and reducing the number of materials.

[0103] In an embodiment, the conductive piece 30 further comprises a third connecting part 33. The third connecting part 33 connects the first connecting part 31 and the second connecting part 32, and the first insulating piece 10 and the second insulating piece 20 cover the third connecting part 33, which is used for insulating the third connecting part 33 and reducing the number of materials and the position of the plurality of conductive pieces 30, thereby reducing the risk of short circuit caused by contact between the plurality of conductive pieces 30.

[0104] In an embodiment, the first insulating piece 10 and the second insulating piece 20 are flexible, which can reduce the pulling of other conductive pieces, such as the pulling of the electrode terminals, under the condition of vibration, thereby reducing the risk of disconnection between the electrode terminals and the first connecting part 31.

[0105] In one embodiment, the first insulating member 10 has a plurality of first openings 11, and the second insulating member 20 has a plurality of second openings 21. The projection of the first opening 11 at least partially overlaps the projection of the second opening 21 along the first direction X. The number of the first openings 11 is the same as the number of the conductive members 30, and the number of the second openings 21 is the same as the number of the conductive members 30. Optionally, the projection of the first opening 11 completely overlaps the projection of the second opening 21. Other conductive members are connected to the first connecting portion 31 through the first opening 11 and the second opening 21. In one embodiment, the first connecting portion 31 comprises a first connecting region 31a and a first extending region 31b. The first connecting region 31a is located within the first opening 11 when viewed along the first direction X, and is located within the second opening 21 when viewed along the direction opposite to the first direction X. The first extending region 31b is formed by extending outward from the outer periphery of the first connecting region 31a, and is located between the first insulating member 10 and the second insulating member 20 to connect the edges of the first opening 11 and the second opening 21, wherein the first connecting region 31a is used to connect the other conductive members.

[0106] In one embodiment, the projection of the second opening 21 is located within the projection of the first opening 11 along the first direction X, and the opening area of the second opening 21 is smaller than the opening area of the first opening 11. The first connecting region 31a has a first surface 311 and a second surface 312 oppositely arranged along the first direction X. The first surface 311 is located within the first opening 11 when viewed along the first direction X, and the second surface 312 is located within the second opening 21 when viewed along the direction opposite to the first direction X.

[0107] The first surface 311 is used to contact and connect with the other conductive members, and the second surface 312 is used for external soldering equipment to use when soldering. The other conductive members are connected to the first surface 311 by soldering on the second surface 312. By increasing the opening area of the first opening 11, it is convenient for the other conductive members to be connected to the first surface 311.

[0108] In one embodiment, at least one third connecting portion 33 is provided with a first region 331, which extends to and is spaced apart from the adjacent two first connecting portions 31 along the second direction Y, so as to increase the structural strength of the connecting member 100 and reduce the possibility of bending the connecting member 100 along the second direction Y. In one embodiment, the two outermost conductive members 30 are provided with the first region 331 along the second direction Y, and each first region 331 extends to and is spaced apart from the adjacent two conductive members 30.

[0109] In an embodiment, at least part of the third connecting portion 33 is bent towards the side where the first insulating member 10 is located along the second direction Y, so as to increase the distance between adjacent second connecting portions 32, reduce the risk of short circuit caused by the contact between adjacent second connecting portions 32, and facilitate the welding of the second connecting portions 32 to the circuit board, and reduce the damage to the battery cell 200a during the welding process.

[0110] In an embodiment, the third connecting portion 33 comprises a third sub-connecting portion 33a, which is bent towards the side where the first insulating member 10 is located along the second direction Y, and the second connecting portion 32 is connected to the third sub-connecting portion 33a. The second connecting portion 32 extends beyond the first insulating member 10 and the second insulating member 20. A plurality of second connecting portions 32 are arranged at intervals along the second direction Y.

[0111] In an embodiment, the connecting member 100 further comprises a third insulating member 40, which is connected to the side of the second insulating member 20 away from the first insulating member 10, and the third insulating member 40 extends along the second direction Y.

[0112] In an embodiment, along the first direction X, the projection of the third insulating member 40 partially overlaps the projection of the third sub-connecting portion 33a, reducing the connection of other impurities and the third sub-connecting portion 33a. Alternatively, along the first direction X, the projection of the third insulating member 40 covers the projection of the third sub-connecting portion 33a, further improving the protection of the third sub-connecting portion 33a.

[0113] In another embodiment, along the first direction X, the projection of the third insulating member 40 overlaps the projection of the second connecting portion 32, increasing the structural strength of the connecting member 100 and reducing the possibility of deformation of the plurality of second connecting portions 32. Alternatively, along the first direction X, the projection of the third insulating member 40 covers the projection of the plurality of second connecting portions 32.

[0114] In an embodiment, along the first direction X, the projection of the third insulating member 40 overlaps the projection of the third connecting portion 33. Further, the third connecting portion 33 comprises a second region 332, which is connected to the third sub-connecting portion 33a, and along the first direction X, the projection of the third insulating member 40 overlaps the projection of the second region 332. Further increasing the structural strength of the connecting member 100 and reducing the possibility of deformation of the connecting member 100.

[0115] In an embodiment, the connecting piece 100 is further provided with a through hole 101, a third opening 102 and a first protrusion 103 for positioning and facilitating connection of the connecting piece 100. It can be understood that the connecting piece 100 can be provided with one or more of the through hole 101, the third opening 102 and the first protrusion 103, which can be adjusted according to the situation. Optionally, the third opening 102 and the first protrusion 103 are asymmetric structures, which can be assembled to prevent mistakes during assembly. Optionally, one of the conductive pieces 30 is provided with a protruding portion 333 at the edge of the third opening 102, which further improves the positioning of the connecting piece 100 during the process. Optionally, one of the conductive pieces 30 is provided with a protruding portion 333 at the edge of the first protrusion 103, which further improves the positioning of the connecting piece 100 during the process.

[0116] In the manufacturing of the connecting piece 100 described above, first, a sheet material is continuously punched by a punching device to form a plurality of conductive pieces 30. Along the width direction of the sheet material, the sheet material after forming a plurality of conductive pieces 30 has a first connecting strip (not shown in the figure) and a second connecting strip (not shown in the figure), the first connecting strip and the second connecting strip are continuous along the length direction of the sheet material, and the plurality of conductive pieces 30 after forming are connected to the first connecting strip and the second connecting strip, so that the plurality of conductive pieces 30 after forming are positioned between the first connecting strip and the second connecting strip. Then, the first insulating piece 10 and the second insulating piece 20 are respectively wrapped around the plurality of conductive pieces 30 along the first direction X, the first connecting strip and the second connecting strip of the sheet material are cut off, the plurality of conductive pieces 30 are disconnected from each other, and the plurality of conductive pieces 30 are spaced apart. In an embodiment, after cutting off the first connecting strip and the second connecting strip of the sheet material, part of the conductive pieces 30 are still connected to each other, and by punching the connecting portions of the two conductive pieces 30 and the first insulating piece 10 and the second insulating piece 20 wrapped around the connecting portions, the conductive pieces 30 connected to each other are disconnected, and the through hole 101 is formed on the connecting piece 100.

[0117] Referring to Figure 4 The application also provides a battery pack 1000, comprising a connecting piece 100, a cell module 200 and a shell assembly 300, the cell module 200 and the connecting piece 100 are arranged in the shell assembly 300, and the connecting piece 100 connects the cell module 200.

[0118] Referring to Figure 5 and Figure 6The plurality of battery cells 200a are stacked along the third direction Z. For example, when the battery cell module 200 includes 6 battery cells 200a, 3 battery cells 200a are stacked along the third direction Z as a first group, and the other 3 battery cells 200a are stacked along the third direction Z as a second group, the first group and the second group are arranged along the second direction Y.

[0119] In an embodiment, the plurality of battery cells 200a are stacked along the third direction Z. For example, when the battery cell module 200 includes 6 battery cells 200a, 3 battery cells 200a are stacked along the third direction Z as a first group, and the other 3 battery cells 200a are stacked along the third direction Z as a second group, the first group and the second group are arranged along the second direction Y.

[0120] Referring to Figure 6 and Figure 7 The battery cell housing 201 includes a first portion 201a and a second portion 201b, the first portion 201a accommodates the electrode assembly, and the second portion 201b connects the first portion 201a, and the electrode terminal 202 extends from the second portion 201b.

[0121] Referring to Figure 11 In an embodiment, the plurality of battery cells 200a includes a first battery cell 200a1, and the first battery cell 200a1 is the battery cell located at the outermost side along the third direction Z. Along the first direction X, the projection of the second connecting portion 32 and the projection of the battery cell housing 201 are separated, reducing the damage of the second connecting portion 32 to the battery cell housing 201. Along the first direction X, the projection of the third sub-connecting portion 33a and the projection of the battery cell housing 201 overlap, improving the protection of the battery cell housing 201. Optionally, along the first direction X, the projection of the third sub-connecting portion 33a connects the projection of the second connecting portion 32 and the projection of the battery cell housing 201, further improving the protection of the battery cell housing 201. The first portion 201a and the second portion 201b cooperate to form a first recess 201c. Along the direction opposite to the first direction X, the projection of the third sub-connecting portion 33a is at least partially disposed in the first recess 201c, and the space of the first recess 201c is utilized to reduce the space occupied by the connecting piece 100.

[0122] Referring to Figure 8 , Figure 9 and Figure 10In an embodiment, the battery pack 1000 further comprises a fourth insulating member 400, which is arranged in the first recess 201c and between the adjacent electrode terminals 202. By arranging the fourth insulating member 400, the risk of short circuit between the adjacent electrode terminals 202 is reduced, and the connection member 100 is facilitated to be arranged, and the vibration of the connection member 100 is reduced. Optionally, the fourth insulating member 400 comprises foam.

[0123] Referring to Figure 5 and Figure 10 In an embodiment, the electrode terminal 202 has a welding portion 202c, which is formed by bending the electrode terminal 202, and is used to be connected with the first connecting region 31a of the first connecting member 31. The electrode terminals 202 of the adjacent battery cells 200a are oppositely bent and connected with the first connecting region 31a.

[0124] In an embodiment, along the first direction X, the projection of the welding portion 202c is located in the projection of the first connecting region 31a, and the welding portion 202c is facilitated to be welded to the first connecting region 31a, and the yield of welding is improved.

[0125] Referring to Figure 6 and Figure 10 In an embodiment, the electrode terminal 202 comprises a first terminal 202a and a second terminal 202b, the first terminal 202a and the second terminal 202b have opposite polarities, one of the first terminal 202a and the second terminal 202b is a positive electrode terminal, and the other is a negative electrode terminal. In this embodiment, the first terminal 202a is described as a positive electrode terminal, and the second terminal 202b is described as a negative electrode terminal. Along the first direction X, the projection of the first terminal 202a of the battery cell 200a is arranged away from the projection of the second terminal 202b of the adjacent battery cell 200a. The welding portion 202c of the first terminal 202a and the welding portion 202c of the second terminal 202b are oppositely and spacedly arranged, and are connected by the first connecting member 31, so as to realize the series connection between the battery cells 200a. Further, the welding portion 202c and the first connecting member 31 are connected by welding, which includes laser welding, ultrasonic welding, etc. In other embodiments, the welding portion 202c and the first connecting member 31 can also be connected by other connection modes such as conductive glue. By spacingly arranging the electrode terminals 202 of the adjacent battery cells 200a, the damage to the battery cells 200a in the welding process is reduced.

[0126] In other embodiments, along the first direction X, the first terminal 202a of the battery cell 200a can also be arranged away from the projection of the first terminal 202a of the adjacent battery cell 200a, and is connected by the first connecting member 31, so as to realize the parallel connection between the battery cells 200a.

[0127] Referring to Figure 11In another embodiment, the projection of the first terminal 202a of the electric cell 200a and the projection of the second terminal 202b of the adjacent electric cell 200a at least partially overlap along the first direction X. The first terminal 202a and the second terminal 202b are bent towards each other, and the welding portion 202c of the first terminal 202a and the second terminal 202b are arranged in a stacked manner. By arranging the welding portions 202c of the adjacent electric cells 200a in a stacked manner, the welding portion 202c is connected to the first connecting area 31a only once, reducing the processing steps.

[0128] In other embodiments, the projection of the first terminal 202a of the electric cell 200a can also at least partially overlap with the projection of the first terminal 202a of the adjacent electric cell 200a, and be connected by the first connecting portion 31, realizing the parallel connection between the electric cells 200a.

[0129] Referring to Figure 4 and Figure 12 In an embodiment, the battery pack 1000 further comprises a first structural member 500, which has a receiving portion 501 for receiving the electric cell 200a. The first structural member 500 is provided with a fourth opening 502 and a second recess 503 arranged in communication. The fourth opening 502 extends along the second direction Y, and the second recess 503 is recessed along a direction opposite to the first direction X. When the electric cell 200a is placed in the receiving portion 501, the second connecting portion 32 passes through the fourth opening 502, and the third sub-connecting portion 33a is partially arranged in the second recess 503, and the third sub-connecting portion 33a protrudes out of the first structural member 500. By positioning the third connecting portion 33 in the second recess 503, the positioning accuracy during assembly is improved, facilitating assembly.

[0130] Referring to Figure 4 and Figure 13 In an embodiment, the battery pack 1000 further comprises a circuit board 600. The circuit board 600 can be a circuit board with a battery management system, which is used to intelligently manage and maintain each battery cell, reduce overcharging and overdischarging of the battery, prolong the service life of the battery, and monitor the state of the battery. The circuit board 600 is provided with a plurality of first connecting holes 601, and the second connecting portion 32 is arranged in the first connecting hole 601 and fixed to the circuit board 600 by soldering or laser welding, thereby realizing the connection between the electric cell 200a and the circuit board 600. In an embodiment, the first connecting holes 601 correspond in position to the second connecting portions 32, and part of the first connecting holes 601 extend along the second direction Y, and part of the first connecting holes 601 extend along the first direction X. By arranging part of the first connecting holes 601 along the first direction X, the distance between adjacent first connecting holes 601 along the second direction Y is increased, the risk of short circuit of the second connecting portions 32 arranged in adjacent first connecting holes 601 during assembly is reduced, and the creepage distance is increased.

[0131] Referring to Figure 4 In an embodiment, the circuit board 600 has a second connecting hole 602, and the first structural member 500 has a second protrusion 504 arranged in the second connecting hole 602 to mount the circuit board 600 on the first structural member 500.

[0132] Referring to Figure 4 and Figure 14 In an embodiment, the housing assembly 300 includes a first housing 301 and a second housing 302, and the first housing 301 is connected to the second housing 302 to accommodate the connecting member 100, the battery cell module 200, the first structural member 500 and the circuit board 600 in the first housing 301 and the second housing 302.

[0133] In an embodiment, the first housing 301 is provided with a third protrusion 301a, and the third protrusion 301a and the second protrusion 504 are connected in cooperation to achieve the connection of the first housing 301 and the first structural member 500. Further, the third protrusion 301a is arranged in the second protrusion 504, and glue is arranged in the gap between the third protrusion 301a and the second protrusion 504 to fix the first housing 301 and the first structural member 500. By arranging the third protrusion 301a and the second protrusion 504 to connect in cooperation, the use of screws is reduced, and the risk of the screws piercing the battery cell 200a is reduced.

[0134] In an embodiment, the third protrusion 301a is provided with a fifth opening 3011 to facilitate filling of glue into the third protrusion 301a.

[0135] Referring to Figure 15 The application also provides a power consumption device 2000 using the above-mentioned battery pack 1000. In an embodiment, the power consumption device 2000 of the application can be, but is not limited to, a portable fax machine, a portable copier, a portable printer, a video recorder, a liquid crystal television, a portable cleaner, a transceiver, a backup power supply, an electric vehicle, an electric motorcycle, an electric assist bicycle, an electric tool, a household large storage battery, etc.

[0136] The connecting member 100, the battery pack 1000 and the power consumption device 2000 of the application are provided with a plurality of spaced conductive members 30, which connect the electrode terminal 202 through the first connecting portion 31 and connect the circuit board 600 through the second connecting portion 32 to realize the connection of the battery cell 200a and the circuit board 600, and further realize voltage acquisition, reduce the use of adapter plates, sampling terminals and voltage sampling wire harnesses, reduce the number of materials, save production cost, and compared with the mode that a plurality of tab of the electrode of the battery cell passes through the adapter plate and is connected to the sampling terminal on the adapter plate after being bent, the application directly connects the electrode terminal to the first connecting portion 31, which reduces the assembly difficulty.

[0137] Those skilled in the art should know that the above-mentioned embodiments are only used to illustrate the present application, but not as a limitation to the present application, as long as the appropriate changes and variations of the above-mentioned embodiments are within the scope of the present application.

Claims

1. A battery pack characterized by comprising: The battery cell module includes a plurality of battery cells stacked along a third direction, each of the battery cells including an electrode terminal; The connecting member includes a first insulating member and a second insulating member arranged along a first direction, and a plurality of conductive members arranged at intervals between the first insulating member and the second insulating member; The battery cell module includes a plurality of battery cells stacked along a third direction, each of the battery cells including an electrode terminal; Each of the conductive members includes a first connecting portion, a second connecting portion, and a third connecting portion, the first connecting portion is welded to the electrode terminal of the battery cell, the second connecting portions of the plurality of conductive members are arranged at intervals along a second direction; The third connecting portion connects the first connecting portion and the second connecting portion, the first insulating member and the second insulating member cover the third connecting portion; The battery cell module and the circuit board are arranged along the third direction, the circuit board is provided with a first connecting hole, and the second connecting portion is arranged in the first connecting hole; The third direction is perpendicular to the first direction and the second direction, and the second direction is perpendicular to the first direction.

2. The battery pack of claim 1, wherein, The first insulating member has a plurality of first openings, and the second insulating member has a plurality of second openings, along the first direction, the projection of the first opening at least partially overlaps the projection of the second opening.

3. The battery pack of claim 2, wherein, Along the first direction, the projection of the second opening is located within the projection of the first opening.

4. The battery pack of claim 2, wherein, The first connecting portion includes a first connecting region and a first extension region, as viewed along the first direction, the first connecting region is located within the first opening, as viewed along a direction opposite to the first direction, the first connecting region is located within the second opening, the first extension region extends outward from the outer periphery of the first connecting region, and the first extension region is located between the first insulating member and the second insulating member.

5. The battery pack of claim 1, wherein, Further comprising a third insulating member connected to a side of the second insulating member away from the first insulating member, along the first direction, the projection of the third insulating member overlaps the projection of the third connecting portion and / or the second connecting portion.

6. The battery pack of claim 1, wherein, At least one of the third connecting portions is provided with a first region, along the second direction, the first region extends to between two adjacent first connecting portions.

7. The battery pack of claim 1, wherein, The battery cell includes a battery cell shell, an electrode assembly arranged in the battery cell shell, and the electrode terminal connected to the electrode assembly and drawn out of the battery cell shell.

8. The battery pack of claim 7, wherein, The electrode terminal has a welding portion, along the first direction, the projection of the welding portion is located within the projection of the first connecting portion.

9. The battery pack of claim 7, wherein, Along the first direction, the projections of the electrode terminals of adjacent battery cells are arranged apart and connected by the first connecting portion.

10. The battery pack of claim 7, wherein, The battery cell shell includes: A first portion, the electrode assembly is arranged in the first portion; A second portion connected to the first portion, the electrode terminal extends out of the second portion; The first portion and the second portion cooperatively form a first recess, along a direction opposite to the first direction, the projection of the third connecting portion is at least partially arranged in the first recess.

11. The battery pack of claim 10, wherein, Further comprising a fourth insulating member arranged in the first recess and located between adjacent electrode terminals.

12. The battery pack of claim 1, wherein, Further included is a first structural member to which the circuit board is attached, the first structural member being provided with a second recess, the third connecting portion being provided in the second recess.

13. An electrical device, characterized by A battery pack including the battery as claimed in any one of claims 1 to 12.

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