Battery module and manufacturing method therefor, battery pack, and electric device

Abstract

A battery module (100) and a manufacturing method therefor, a battery pack (200), and an electric device (300). The battery module (100) comprises a battery cell assembly (20), a second member (30), a limiting portion (40), an electrically conductive assembly (50) and a sealing member (60). The battery cell assembly (20) comprises a first member (22) and a plurality of battery cells (21). Each battery cell (21) comprises a battery cell casing (211) and an electrode terminal (212), the electrode terminal (212) being led out from the battery cell casing (211). The first member (22) comprises a plurality of first member openings (22a). Electrode terminals (212) pass through the first member openings (22a). The first member (22) and battery cell casings (211) are arranged in a first direction (X). An outer surface of the second member (30) is provided with an insulating material. The second member (30) comprises a base portion (31) and a through hole (31a), the base portion (31) being arranged on the side of the first member (22) away from the battery cell casings (211). The through hole (31a) penetrates the base portion (31) in the first direction (X). The limiting portion (40) is connected to the side of the base portion (31) facing the battery cell casings (211), and the limiting portion (40) comprises an opening (401). The electrically conductive assembly (50) is connected to the battery cell assembly (20). Part of the electrically conductive assembly (50) is arranged in the limiting portion (40). The electrically conductive assembly (50) is led out from the limiting portion (40) and the through hole (31a). The sealing member (60) is arranged in a gap between the electrically conductive assembly (50) and the limiting portion (40). The structure is conducive to reducing the risk of a short circuit.

Description

Battery module and manufacturing method thereof, battery pack and electrical equipment Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to a battery module and a manufacturing method thereof, a battery pack and an electrical device. Background Art

[0002] Currently, battery modules are widely used in drones, electric vehicles, smart energy storage devices, and other fields. Battery modules connect to cell components through conductive components for power input and output, as well as information collection, but this carries the risk of short circuits.

[0003] Summary of the Invention

[0004] In view of this, it is necessary to provide a battery module and a manufacturing method thereof, a battery pack and an electrical device that can reduce the risk of short circuit.

[0005] An embodiment of the present application provides a battery module comprising a cell assembly, a second component, a retaining portion, a conductive component, and a seal. The cell assembly comprises a first component and multiple cells. Each cell comprises a cell housing and electrode terminals, with the electrode terminals extending from the cell housing. The first component comprises multiple first component openings. The electrode terminals extend through the first component openings. The first component and the cell housing are arranged along a first direction. An insulating material is provided on the outer surface of the second component. The second component comprises a base, which is located on a side of the first component facing away from the cell housing. The second component comprises a through hole, which extends through the base along the first direction. The retaining portion is connected to a side of the base facing the cell housing and includes an opening. The conductive component is connected to the cell assembly. A portion of the conductive component is located within the retaining portion. The conductive component extends from the opening and the through hole. A seal is provided in the gap between the conductive component and the retaining portion. By providing a seal in the gap between the conductive component and the retaining portion, the present application seals and insulates the cell assembly and the conductive component, thereby reducing the risk of short circuits.

[0006] Optionally, in some embodiments of the present application, the through hole is configured to provide a sealing material to the limiting portion to form a seal.

[0007] Optionally, in some embodiments of the present application, the battery module includes an extension. The extension is connected to a side of the base facing away from the battery cell housing. The extension includes an extension opening. The conductive component extends through the opening, the through-hole, and the extension. A sealant is at least partially disposed in the gap between the conductive component and the extension, further sealing and insulating the battery cell assembly and the conductive component, thereby further reducing the risk of short circuits.

[0008] Optionally, in some embodiments of the present application, the limiting portion includes a first limiting portion, the first limiting portion includes a first opening, the through hole includes a first through hole, and the conductive component is connected to the first member and is led out from the first opening and the first through hole.

[0009] Optionally, in some embodiments of the present application, the sealing member includes a first sealing member. The first sealing member is at least partially disposed in a gap between the conductive component and the first limiting portion to seal and insulate the conductive component.

[0010] Optionally, in some embodiments of the present application, the conductive assembly includes a first connecting portion and a conductive wire. The first connecting portion is connected to the first member. The conductive wire is connected to the first connecting portion and extends from the first opening and the first through-hole. A first sealing member at least partially covers the connection between the first connecting portion and the first member, providing sealing and insulation protection for the connection between the first connecting portion and the first member.

[0011] Optionally, in some embodiments of the present application, the extension portion includes a first extension portion. The first extension portion includes a second opening. The conductive component is led out through the first opening, the first through-hole, and the second opening. The first sealing member is at least partially disposed in a gap between the first extension portion and the conductive component to further seal and insulate the conductive component.

[0012] Optionally, in some embodiments of the present application, the first sealing member is configured to be formed by curing the first sealing material.

[0013] Optionally, in some embodiments of the present application, along the first direction, a projection of the first limiting portion and a projection of the first extending portion overlap.

[0014] Optionally, in some embodiments of the present application, the battery module further comprises a second insulating member. The second insulating member is configured to be formed by applying a second insulating material to the first limiting portion and the first extension portion and then curing the second insulating material. The second insulating member is partially located in the first limiting portion, partially located in the first extension portion, and partially located in the first through-hole, and the first sealing member is located in the first extension portion. The viscosity of the second insulating material is greater than that of the first sealing material, which helps to strengthen the waterproofing of the conductive component.

[0015] Optionally, in some embodiments of the present application, when viewed along a direction opposite to the first direction, the through hole is located in a space enclosed by the limiting portion, thereby reducing overflow of the sealing material.

[0016] Optionally, in some embodiments of the present application, the first component includes a first circuit board, the first circuit board is provided with a first conductive sheet, and adjacent electrode terminals pass through openings of the first component and are stacked and connected to the first conductive sheet.

[0017] Optionally, in some embodiments of the present application, the conductive assembly includes a first electrical connector. The limiting portion includes a second limiting portion. The sealing member includes a second sealing member. A portion of one of the electrode terminals, a portion of one of the first conductive sheets, and a portion of the first electrical connector are disposed on the second limiting portion. The second sealing member covers the portion of the electrode terminal, the portion of the first conductive sheet, and the portion of the first electrical connector, providing sealing and insulation protection for the portion of the electrode terminal, the portion of the first conductive sheet, and the portion of the first electrical connector.

[0018] Optionally, in some embodiments of the present application, the second member includes four first side walls. The four first side walls connect to the base and form a first recess. At least a portion of the electrode terminal is located in the first recess. The battery module also includes a first insulating member. At least a portion of the first insulating member is disposed in the gap between the electrode terminal and the second member to seal and insulate the gap.

[0019] Optionally, in some embodiments of the present application, the first insulating member is configured to provide a first insulating material to the first recess to form the first insulating member. The first insulating member covers at least a portion of the electrode terminal to seal and insulate the electrode terminal.

[0020] Optionally, in some embodiments of the present application, the second member includes a connecting protrusion. A first gap is formed between the first member and the base. The first insulating member is disposed in the first gap to facilitate the flow of the first insulating material into the first gap, covering the connecting area, sealing and insulating the connecting area, and facilitating bonding the first member to the base via the first insulating member.

[0021] Optionally, in some embodiments of the present application, each battery cell includes an electrode assembly. The battery cell housing includes a main body and a sealing portion. The electrode assembly is disposed in the main body. The sealing portion includes a first sealing portion. Electrode terminals are connected to the electrode assembly and extend from the first sealing portion, with each first sealing portion at least partially located in the first recess. A first insulating member covers at least a portion of each first sealing portion, providing sealing and insulation protection for the first sealing portion.

[0022] Optionally, in some embodiments of the present application, the first recess and the limiting portion are separately arranged to reduce the flow of sealing material into the first recess.

[0023] Optionally, in some embodiments of the present application, the battery module further includes a separator, which is located between the first component and the first limiting portion to further reduce the flow of the sealing material into the first recess.

[0024] Optionally, in some embodiments of the present application, the limiting portion and the extending portion are integrally formed on the base.

[0025] Optionally, in some embodiments of the present application, the conductive component is configured to transmit electrical signal information of the battery cell component and / or transmit power of the battery cell component.

[0026] Optionally, in some embodiments of the present application, the second member has a first recess. The battery module further includes a heat sink including a fourth through-hole. The fourth through-hole is connected to the first recess. The fourth through-hole is configured to provide a first insulating material to the first recess to form a first insulating member. By positioning the first insulating member in the gap between the electrode terminal and the second member, the electrode terminal is secured and heat dissipated, and the need for additional glue-filling channel structures within the battery module can be reduced, thereby reducing restrictions on the battery module structure.

[0027] Optionally, in some embodiments of the present application, the heat sink includes a heat dissipation top wall and a protrusion. The protrusion extends from the heat dissipation top wall along a first direction, and the fourth through hole extends through the protrusion along a third direction. A first space is defined between the heat dissipation top wall and the first recess along the first direction. The first insulating material can enter the first recess through the first space.

[0028] Optionally, in some embodiments of the present application, the protrusion is located outside the first recess, reducing the occupation of the first recess by the protrusion, reducing the length of the external device extending into the first recess, and further reducing the risk of external equipment damaging components in the first recess.

[0029] Optionally, in some embodiments of the present application, the fourth through hole is located outside the first recess, so as to facilitate external equipment to pass through the first through hole and enter the first recess.

[0030] Optionally, in some embodiments of the present application, a first insulating member is provided in the fourth through hole, and the fourth through hole can be sealed by the first insulating member to reduce dust and other impurities from entering the first recess through the fourth through hole.

[0031] Optionally, in some embodiments of the present application, in the third direction, the length of the heat sink is greater than the length of the stack of multiple battery cells. Both ends of the second component extend out of the battery cell assembly, which is conducive to providing a convex portion so that the convex portion is located outside the first concave portion.

[0032] Optionally, in some embodiments of the present application, each battery cell includes an electrode assembly, and the battery cell housing includes a main body and a sealing portion, with the electrode assembly disposed within the main body. The sealing portion includes a first sealing portion, and the electrode terminal is connected to the electrode assembly and extends from the first sealing portion. Each first sealing portion is at least partially located within the first recess. A first insulating member covers at least a portion of each first sealing portion, thereby enhancing the sealing and insulation protection of the first sealing portion.

[0033] Optionally, in some embodiments of the present application, the heat sink and the plurality of battery cells are arranged in the second direction, and along the first direction, the protrusion extends beyond the main body, thereby reducing the effect of the protrusion on the heat dissipation of the main body and facilitating heat dissipation.

[0034] Optionally, in some embodiments of the present application, along the third direction, the projection of the first through hole is separated from the projection of the first sealing portion, which can reduce the risk of external equipment extending through the first through hole and damaging the first sealing portion.

[0035] An embodiment of the present application provides a battery pack, including the battery module of any one of the above embodiments, the battery pack includes an outer shell and a top cover, the outer shell and the top cover form a receiving space, and the battery module is located in the receiving space.

[0036] An embodiment of the present application further provides an electrical device, comprising the battery pack according to any of the above embodiments.

[0037] An embodiment of the present application further provides a method for manufacturing a battery module according to any one of the embodiments, comprising the following steps: connecting a cell assembly, a second component, a stopper, and a conductive assembly; injecting a sealing material from the through hole into the stopper, and curing the sealing material to form a seal.

[0038] The battery module, battery pack and electrical equipment of the present application seal and insulate the battery cell assembly and the conductive assembly by arranging the seal in the gap between the conductive assembly and the limiting portion, which is beneficial to reducing the risk of short circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] FIG1 is a schematic diagram showing a partial structure of a battery module in some embodiments.

[0040] FIG2 is a schematic diagram showing a partial structure of a battery module from another perspective in some embodiments.

[0041] FIG3 is a schematic diagram showing an exploded view of a portion of the structure of the battery module in the embodiment of FIG1 .

[0042] FIG4 is a schematic diagram showing the structure of a battery cell in some embodiments.

[0043] FIG5 shows an exploded schematic diagram of a battery cell in some embodiments.

[0044] FIG6 shows an exploded schematic diagram of a battery cell and a heat conducting member in some embodiments.

[0045] FIG7 is a schematic diagram showing the structure of a battery cell and a heat conducting member in some embodiments.

[0046] FIG8 is a schematic diagram showing a partial structure of a battery module in some embodiments.

[0047] FIG9 is a schematic structural diagram of a first circuit board and a conductive component in some embodiments.

[0048] FIG10 is a schematic cross-sectional view showing a partial structure of the battery module in the embodiment of FIG1 along the II-II direction.

[0049] FIG11 shows an enlarged schematic diagram of point B in the embodiment of FIG10 .

[0050] FIG12 is a schematic cross-sectional view of a portion of the battery module in the embodiment of FIG2 along the III-III direction.

[0051] FIG13 is a schematic cross-sectional view showing a partial structure of the battery module in the embodiment of FIG2 along the IV-IV direction.

[0052] FIG14 shows an enlarged schematic diagram of point C in the embodiment of FIG13 .

[0053] FIG15 is a schematic cross-sectional view of a portion of the battery module in the embodiment of FIG2 along the VV direction.

[0054] FIG16 is a schematic structural diagram showing a partial structure of a battery pack from another perspective.

[0055] FIG17 is a schematic cross-sectional view showing a partial structure of the battery module in the embodiment of FIG16 along the VI-VI direction.

[0056] FIG18 shows an enlarged schematic diagram of point D in the embodiment of FIG17 .

[0057] FIG19 is a schematic diagram showing a partial structure of a battery module in another embodiment of FIG17 .

[0058] FIG20 shows an enlarged schematic diagram of point E in the embodiment of FIG19 .

[0059] FIG21 is a schematic structural diagram of the first component in some embodiments.

[0060] FIG22 shows a schematic structural diagram of the first component from another perspective in some embodiments.

[0061] FIG23 is a schematic structural diagram of the second component in some embodiments.

[0062] FIG24 shows a schematic structural diagram of the second component from another perspective in some embodiments.

[0063] FIG25 is a schematic cross-sectional view showing a partial structure of the battery module in the embodiment of FIG23 along the VII-VII direction.

[0064] FIG26 shows a schematic structural diagram of a battery pack in some embodiments.

[0065] FIG27 is a schematic structural diagram of a battery pack from another perspective in some embodiments.

[0066] FIG. 28 shows an exploded schematic diagram of a battery pack in some embodiments.

[0067] FIG29 is a schematic diagram showing a portion of a battery pack in some embodiments.

[0068] FIG30 is a schematic structural diagram showing a portion of a battery pack from another perspective in some embodiments.

[0069] FIG31 is a schematic structural diagram showing a portion of a housing in some embodiments.

[0070] FIG32 is a schematic flow chart showing a method for manufacturing a battery module in some embodiments.

[0071] FIG33 shows a schematic structural diagram of electrical equipment in some embodiments.

[0072] Description of main component symbols: Battery module 100 Second thermal conductive adhesive 100b Insulator 100c Battery cell assembly 20 Battery cell 21 First battery cell 21a Second battery cell 21b Third battery cell 21c Battery cell housing 211 Main body 211a First housing 2111 First housing recess 2111a Second housing 2112 Second housing recess 2112a First extended edge 2113 Second extended edge 2114 Main body left wall 2101 Main body right wall 2102 Main body bottom wall 2103 Main body top wall 2104 Main body front wall 2105 Main body rear wall 2106 Sealing portion 211b First sealing portion 2115 Second sealing portion 2116 Electrode terminal 212 Connecting area 212a Electrode assembly 213 First component 22 First component opening22a First hole 221 Second hole 222 First conductive sheet 223 Second conductive sheet 224 Third hole 225 Fourth hole 226 Second component 30 First recess 301 Recess opening 301a First gap 302 Base 31 First side wall 32 Connecting protrusion 33 Through hole 31a First through hole 311 Second through hole 312 Third through hole 313 Limiting portion 40 Opening 401 First limiting portion 41 First opening 401a Third opening 401b Fifth opening 401c First connecting wall 411 Second connecting wall 412 Third connecting wall 413 Fourth connecting wall 414 Second limiting portion 42 Third limiting portion 43 Conductive component 50Conductive component 51, first connecting portion 51a, wire 51b, second connecting portion 51c, first electrical connector 52, first conductive portion 521, first insulating portion 522, second electrical connector 53, second conductive portion 531, second insulating portion 532, sealing member 60, first sealing member 61, second sealing member 62, third sealing member 63, extension portion 70, extension portion opening 701, first extension portion 71, first extension wall 711, second extension wall 712, third extension wall 713, fourth extension wall 714, second extension portion 72, third extension portion 73, second opening 701a, fourth opening 701b, sixth opening 701c, first insulating member 80, heat sink 90, first heat dissipation channel 90a, heat dissipation protrusion 90b, fourth through hole901 Heat dissipation front wall 91 Second recess opening 911 Heat dissipation rear wall 92 Fourth recess opening 921 Heat dissipation left wall 93 Heat dissipation top wall 95 First space 95a Protrusion 96 Heat dissipation bottom wall 97 Partition 120 Heat conduction member 130 First portion 130a Second portion 130b Third portion 130c Third gap 1301 Fourth gap 1302 Battery pack 200 First fastener 100a Housing 10 Housing through-hole 101 First fixing member 210 Second circuit board 220 First elastic member 230 Second elastic member 240 First housing through-hole 10a Second housing through-hole 10b Housing front wall 11 First recess opening 111 First fixing hole 112 Housing rear wall12 Third concave opening 121 Left wall of the housing 13 First heat sink 131 Right wall of the housing 14 Second heat sink 141 Bottom wall of the housing 15 Top cover 16 Third heat sink 161 Bracket 17 Electric device 300 First direction X Second direction Y Third direction Z

[0073] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0074] The following detailed description is illustrative and non-limiting. It is intended to provide a basic understanding of the present application and is not intended to identify the key or decisive elements of the present application or to limit the scope of protection. As long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any manner.

[0075] When a component is referred to as being “disposed on” another component, it can be directly disposed on the other component or there may be a component intervening therebetween. When a component is referred to as being “connected to” another component, it can be directly connected to the other component or there may be a component intervening therebetween.

[0076] It can be understood that the terms "perpendicular, equal" are used to describe the ideal state between two components. In actual production or use, there may be a state that is approximately perpendicular or equal between the two components. For example, combined with numerical descriptions, perpendicular can refer to the angle between two straight lines being in the range of 90°±10°, perpendicular can also refer to the dihedral angle between two planes being in the range of 90°±10°, and perpendicular can also refer to the angle between a straight line and a plane being in the range of 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 perspective, a component can be considered a "straight line" or a "plane" if the overall extension direction is a straight line or a plane.

[0077] The terms “vertical,” “horizontal,” “left,” “right,” “top,” “bottom,” “front,” “back,” and similar expressions used herein are for illustrative purposes only and are not intended to limit this application.

[0078] The term "parallel" is used to describe an ideal state between two components. In actual production or use, two components may be approximately parallel. For example, in conjunction with numerical descriptions, parallel can refer to the angle between two lines being within 180°±10°, the dihedral angle between two planes being within 180°±10°, or the angle between a line and a plane being within 180°±10°. Two components described as "parallel" do not have to be absolutely straight lines or planes, but can be roughly straight lines or planes. From a macroscopic perspective, a component can be considered "straight" or "planar" if its overall extension direction is a straight line or plane.

[0079] Unless otherwise defined, the term "plurality" herein, when used to describe the number of components, specifically means that the components are two or more.

[0080] In the first direction X, it includes the first direction X and a direction opposite to the first direction X; in the second direction Y, it includes the second direction Y and a direction opposite to the second direction Y; in the third direction Z, it includes the third direction Z and a direction opposite to the third direction Z.

[0081] Referring to Figures 1 to 3, 8 to 10, and 21 and 22, one embodiment of the present application provides a battery module 100 comprising a cell assembly 20, a second member 30, a retaining portion 40, a conductive assembly 50, and a seal 60. The cell assembly 20 includes a plurality of cells 21 and a first member 22. Each cell 21 includes a cell housing 211 and an electrode terminal 212, with the electrode terminal 212 extending from the cell housing 211. The first member 22 and the cell housing 211 are arranged along a first direction X. The first member 22 includes a plurality of first member openings 22a, through which the electrode terminals 212 extend. The outer surface of the second member 30 is provided with insulating material. The second member 30 includes a base 31, which is located on a side of the first member 22 away from the cell housing 211. The second member 30 includes a through-hole 31a extending through the base 31 along the first direction X. The stopper 40 is connected to the side of the base 31 facing the cell housing 211 and includes an opening 401. The conductive assembly 50 is connected to the cell assembly 20. A portion of the conductive assembly 50 is located within the stopper 40 and extends through the stopper 40 and the through-hole 31a. A seal 60 is provided in the gap between the conductive assembly 50 and the stopper 40.

[0082] The present application provides sealing and insulation protection for the battery cell assembly 20 and the conductive assembly 50 by arranging the sealing member 60 in the gap between the conductive assembly 50 and the limiting portion 40 , which helps to reduce the risk of short circuit.

[0083] In some embodiments, the through hole 31 a is configured to provide a sealing material to the stopper 40 to form a seal 60 .

[0084] In some embodiments, the conductive component 50 is configured to transmit electrical signal information of the battery cell 21 and / or transmit the power of the battery cell assembly 20. The electrical signal information includes but is not limited to voltage, current, temperature, and resistance. In this embodiment, the conductive component 50 is configured to transmit electrical signal information of the battery cell 21 as an example.

[0085] In some embodiments, the sealing material includes one of polyurethane glue, epoxy glue, and silicone glue. Alternatively, the sealing material includes quick-drying glue.

[0086] In some embodiments, the limiting portion 40 and the base portion 31 are integrally formed, for example, by injection molding.

[0087] In some embodiments, the limiting portion 40 is adhesively connected to the base 31 .

[0088] In some embodiments, when viewed along a direction opposite to the first direction X, the through hole 31 a is located in a space enclosed by the limiting portion 40 .

[0089] In some embodiments, the battery module 100 includes an extension 70 connected to the side of the base 31 facing away from the cell housing 211. The extension 70 includes an extension opening 701. The conductive component 50 is extended through the opening 401, the through-hole 31a, and the extension opening 701. A seal 60 is provided in the gap between the conductive component 50 and the extension 70 to further seal and insulate the cell assembly 20 and the conductive component 50, further reducing the risk of short circuits.

[0090] In some embodiments, the extension portion 70 is integrally formed with the base portion 31, for example, by injection molding.

[0091] In some embodiments, the extension portion 70 is adhesively connected to the base portion 31 .

[0092] 4, 5, and 6, in some embodiments, each battery cell 21 includes an electrode assembly 213 disposed within a battery cell housing 211. Electrode terminals 212 are connected to and extend from the battery cell housing 211. Adjacent electrode terminals 212 are connected to form a connection region 212a.

[0093] In some embodiments, the battery cell 21 comprises a pouch cell. The battery cell housing 211 comprises a main body 211a and a sealing portion 211b. The main body 211a defines a storage space. The battery cell housing 211 comprises a first housing 2111 and a second housing 2112. The first housing 2111 defines a first housing recess 2111a, while the second housing 2112 defines a second housing recess 2112a. The first housing 2111 connects to the second housing 2112, forming a storage space. The electrode assembly 213 is partially located in the first housing recess 2111a and partially located in the second housing recess 2112a. The periphery of the first housing 2111 extends outward to form a first extended edge 2113, while the periphery of the second housing 2112 extends outward to form a second extended edge 2114. When the first housing 2111 connects to the second housing 2112, the first and second extended edges 2113 and 2114 overlap and are sealed together, forming a sealing portion 211b.

[0094] In one embodiment, the main body 211a has a storage space. The main body 211a includes a first housing 2111 and a second housing 2112. The first housing 2111 has a first housing recess 2111a, and the second housing 2112 is flat. The first housing 2111 connects to the second housing 2112 to form a storage space. The electrode assembly 213 is located in the first housing recess 2111a.

[0095] In some embodiments, the sealing portion 211 b includes a first sealing portion 2115 and two second sealing portions 2116 . The first sealing portion 2115 connects the two second sealing portions 2116 , and the two second sealing portions 2116 are arranged along the second direction Y. The electrode terminal 212 extends from the first sealing portion 2115 .

[0096] Referring to FIG. 1 , in some embodiments, a cell assembly 20 includes a first cell assembly 201 and a second cell assembly 202 . The first cell assembly 201 and the second cell assembly 202 are arranged along a second direction Y. The first cell assembly 201 includes at least two cells 21 stacked along a third direction Z, and the second cell assembly 202 includes at least two cells 21 stacked along the third direction Z. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0097] Referring to Figures 10 and 20 to 22, in some embodiments, the second member 30 has a first recess 301, and the first recess 301 includes a recess opening 301a facing the battery cell assembly 20. Optionally, at least a portion of the electrode terminal 212 is located in the first recess 301. The electrode terminal 212 can be sealed and insulated. Optionally, at least a portion of the first member 22 and the electrode terminal 212 is located in the first recess 301, and the first member 22 and the electrode terminal 212 can be sealed and insulated. Optionally, the first sealing portion 2115, the electrode terminal 212, and the first member 22 are located in the first recess 301, and the first sealing portion 2115, the electrode terminal 212, and the first member 22 can be sealed and insulated.

[0098] In some embodiments, the battery module 100 includes a first insulating member 80 . At least a portion of the first insulating member 80 is disposed in the gap between the electrode terminal 212 and the second component 30 to provide sealing and insulation protection for the battery module 100 .

[0099] In some embodiments, the first insulating member 80 is configured to be formed by placing a first insulating material in the first recess 301 and then curing the first insulating material.

[0100] In some embodiments, the first insulating member 80 is disposed in the gap between the base 31 and the connection region 212 a to further seal and insulate the base 31 and the connection region 212 a.

[0101] In some embodiments, the first insulating member 80 covers the connection region 212 a to seal and insulate the connection region 212 a.

[0102] In some embodiments, the first insulating member 80 covers at least a portion of the first component 22, sealing and insulating the first component 22 and the portion of the electrode terminal 212 extending beyond the cell casing 211. The electrode terminal 212, the first component 22, and the second component 30 are adhesively connected by the first insulating member 80, improving the connection stability of the electrode terminal 212, the first component 22, and the second component 30, and providing sealing and insulating protection for the electrode terminal 212, the first component 22, and the second component 30.

[0103] In some embodiments, the first insulating member 80 covers the portion of the electrode terminal 212 extending out of the cell housing 211 and at least a portion of each first sealing portion 2115 , thereby enhancing sealing and insulating protection of the electrode terminal 212 and the first component 22 .

[0104] In some embodiments, the first insulating material comprises one of polyurethane glue, epoxy glue, and silicone glue. Alternatively, the first insulating material comprises potting glue. Alternatively, the first insulating material comprises foam glue.

[0105] Referring to Figures 3, 8, and 9, in some embodiments, the first member 22 includes a first circuit board. The first member opening 22a includes a first hole 221 and a second hole 222, which extend along the second direction Y. The first hole 221 and the second hole 222 are arranged along the third direction Z. The electrode terminal 212 of an adjacent battery cell 21 passes through the first hole 221, and the electrode terminal 212 of another battery cell 21 passes through the second hole 222. The two electrode terminals 212 are stacked and connected to each other, forming a connection region 212a. The connection region 212a is connected to the first circuit board and is located between the first circuit board and the base 31.

[0106] In some embodiments, the first circuit board includes multiple first conductive sheets 223. The first conductive sheets 223 are connected to the first circuit board. The electrode terminals 212 of adjacent battery cells 21 pass through the first holes 221, and the electrode terminals 212 of another battery cell 21 pass through the second holes 222. The two electrode terminals 212 are stacked and welded to the first conductive sheets 223. Welding methods include laser welding, ultrasonic welding, etc. In other embodiments, the connection region 212a and the first conductive sheet 223 can also be connected using other methods such as conductive adhesive.

[0107] In one embodiment, the first conductive sheet 223 is configured to collect electrical signal information of the battery cell 21 , where the electrical signal information includes but is not limited to voltage, current, temperature, and resistance.

[0108] In one embodiment, the first circuit board is further provided with a second conductive sheet 224. The second conductive sheet 224 connects the electrode terminal 212 of the first battery cell assembly 201 and the electrode terminal 212 of the second battery cell assembly 202, and is used to transfer current from the first battery cell assembly 201 to the second battery cell assembly 202, thereby achieving a series connection or a parallel connection between the first battery cell assembly 201 and the second battery cell assembly 202.

[0109] In some embodiments, the first circuit board further includes a third hole 225. When viewed along a direction X' opposite to the first direction X, the third hole 225 is located between the first hole 221 and the second hole 222 along a third direction Z. The third hole 225 facilitates the flow of the first insulating material into the first recess 301, thereby improving the efficiency of injecting the first insulating material into the first recess 301.

[0110] In some embodiments, the first circuit board further defines a fourth hole 226 . Along the second direction Y, the fourth hole 226 is located in the middle of the first circuit board.

[0111] In some embodiments, the conductive component 50 includes a conductive component 51, which includes a first connecting portion 51a, a wire 51b and a second connecting portion 51c. The first connecting portion 51a is connected to the first circuit board through a plurality of fourth holes 226, and the wire 51b connects the first connecting portion 51a and the second connecting portion 51c.

[0112] Optionally, the first circuit board includes a flexible printed circuit (FPC). Optionally, the first circuit board includes a printed circuit board (PCB).

[0113] Referring to FIG. 8 , in some embodiments, the conductive assembly 50 includes a first electrical connector 52 and a second electrical connector 53 . The first electrical connector 52 and the second electrical connector 53 are connected to an external device to enable power input or output. Optionally, the first electrical connector 52 and the second electrical connector 53 are soldered to the first circuit board. Optionally, the first electrical connector 52 comprises a copper busbar, and the second electrical connector 53 comprises a copper busbar.

[0114] In some embodiments, the first electrical connector 52 includes a first conductive portion 521 and a first insulating portion 522 . The first conductive portion 521 extends from both ends of the first insulating portion 522 . One end of the first conductive portion 521 is connected to the first conductive sheet 223 , and the other end is connected to an external device.

[0115] Please refer to Figure 14. In some embodiments, along the third direction Z, the projection of one of the first conductive sheets 223, the projection of one of the electrode terminals 212, and the projection of the first conductive portion 521 overlap, which can reduce the bending of the electrode terminal 212, simplify the assembly process, and facilitate the welding connection of the electrode terminal 212 to the first conductive sheet 223 and the welding connection of the first conductive portion 521 to the first conductive sheet 223.

[0116] Please refer to Figure 8. In some embodiments, the second electrical connector 53 includes a second conductive portion 531 and a second insulating portion 532. The second conductive portion 531 extends from both ends of the second insulating portion 532. One end of the second conductive portion 531 is connected to another first conductive sheet 223, and the other end is connected to an external device.

[0117] Please refer to Figure 15. In some embodiments, along the third direction Z, the projection of another first conductive sheet 223, the projection of another electrode terminal 212, and the projection of the second conductive portion 531 overlap, which can reduce the bending of the electrode terminal 212, simplify the assembly process, and facilitate welding the electrode terminal 212 to connect to another first conductive sheet 223 and facilitate welding the second conductive portion 531 to connect to another first conductive sheet 223.

[0118] 1 to 3, 10 to 15, 21 and 22, in some embodiments, the second member 30 is made of an insulating material. In some embodiments, the second member 30 is made of a metal material and an insulating material, and the insulating material may cover the outer surface of the metal material.

[0119] In some embodiments, the second member 30 includes a first sidewall 32, which is formed by extending the edge of the base 31, and the first sidewall 32 and the base 31 form a first recess 301. Optionally, the second member 30 includes four first sidewalls 32, which enclose the base 31 to form the first recess 301.

[0120] In some embodiments, the second member 30 includes a connecting protrusion 33 connected to the side of the base 31 facing the battery cell housing 211. The connecting protrusion 33 is connected to the first member 22, so that a first gap 302 is defined between the first member 22 and the base 31. The connecting region 212a is located in the first gap 302, which facilitates the flow of the first insulating material into the first gap 302, covering the connecting region 212a, sealing and insulating the connecting region 212a, and facilitating the bonding of the first member 22 to the base 31 through the first insulating member 80.

[0121] In some embodiments, one end of the four first side walls 32 away from the base 31 forms a recess opening 301 a.

[0122] In some embodiments, the limiting portion 40 includes a first limiting portion 41 connected to a side of the base 31 facing the first member 22. The first limiting portion 41 includes a first opening 401a. The through hole 31a includes a first through hole 311, which extends through the base 31 along the first direction X. The conductive component 51 is led out through the first opening 401a and the first through hole 311.

[0123] In some embodiments, the first connecting portion 51 a passes through the first through hole 311 to connect to the first circuit board, and the wire 51 b is led out from the first opening 401 a and the first through hole 311 .

[0124] In some embodiments, the seal 60 includes a first seal 61. The first seal 61 is formed by applying a first sealing material to the first limiting portion 41 and then curing the first seal. The first seal 61 covers the connection between the first connecting portion 51a and the first member 22, sealing and insulating the connection between the first connecting portion 51a and the first member 22. Optionally, the first seal 61 covers the connection between the first connecting portion 51a and the first circuit board, sealing and insulating the connection between the first connecting portion 51a and the first circuit board.

[0125] In some embodiments, before the first sealing material is injected, the first through hole 311 is connected to the first opening 401a. After the first sealing material is injected, the first sealing member 61 fills the first opening 401a, so that the first through hole 311 is no longer connected to the first opening 401a. In some embodiments, the first sealing material includes one of polyurethane glue, epoxy glue, and silicone glue. Alternatively, the first sealing material includes quick-drying glue.

[0126] In some embodiments, the first sealing member 61 covers the wire 51 b and the first connecting portion 51 a located in the first limiting portion 41 , further sealing and insulating the wire 51 b and the first connecting portion 51 a .

[0127] In some embodiments, the first limiting portion 41 is connected to the first component 22 , which can reduce the first sealing material from entering the first recess 301 , and is conducive to the solidification of the first sealing material to form the first limiting portion 41 .

[0128] In some embodiments, the battery module 100 includes a separator 120, which is disposed between the first member 22 and the first limiting portion 41. The separator 120 connects the first member 22 and the first limiting portion 41, and can isolate the first opening 401a from the first recess 301, further reducing the ingress of the first sealing material into the first recess 301. Optionally, the separator 120 includes a compressible elastic member, such as foam or a silicone pad.

[0129] In some embodiments, the extension portion 70 includes a first extension portion 71 connected to a side of the base portion 31 facing away from the first member 22 and including a second opening 701a. The conductive component 51 extends through the first opening 401a, the first through-hole 311, and the second opening 701a. A first sealing member 61 is disposed in the gap between the first extension portion 71 and the conductive component 51. The first sealing member 61 covers the first connecting portion 51a and a portion of the conductive wire 51b. Alternatively, a portion of the first connecting portion 51a is disposed on the first stopper 41, a portion of the first connecting portion 51a is disposed on the first extension portion 71, a portion of the conductive wire 51b is disposed on the first extension portion 71, and the second connecting portion 51c and a portion of the conductive wire 51b extend from the first extension portion 71. Alternatively, the first connecting portion 51a is disposed on the first stopper 41, a portion of the conductive wire 51b is disposed on the first extension portion 71, and the second connecting portion 51c and a portion of the conductive wire 51b extend from the first extension portion 71.

[0130] Before the first sealing material is poured, the first through hole 311 is connected to the second opening 701a. After the first sealing material is poured, the first sealing member 61 fills the second opening 701a, so that the first through hole 311 is no longer connected to the second opening 701a.

[0131] Before pouring the first insulating material, the first sealing material is poured first, so that the first opening 401 a is no longer connected to the first through hole 311 , thereby reducing the first insulating material from entering the first limiting portion 41 and the first extending portion 71 .

[0132] In some embodiments, the limiting portion 40 includes a first limiting portion 41, and the extending portion 70 includes a first extending portion 71. Before the first sealing material is injected, the second opening 701a, the first through hole 311, and the first opening 401a are interconnected. The first sealing member 61 is disposed at the second opening 701a, the first through hole 311, and the first opening 401a, so that the second opening 701a, the first through hole 311, and the first opening 401a are no longer interconnected.

[0133] In some embodiments, the projection of the first limiting portion 41 and the projection of the first extending portion 71 overlap along the first direction X. The first limiting portion 41 and the first extending portion 71 can be any structure that surrounds the first connecting portion 51a and the conductive wire 51b located within the first limiting portion 41, the first through hole 311, and the first extending portion 71, such as a cylindrical structure, an elliptical cylindrical structure, a regular prism structure, an anisotropic cylindrical structure, etc., wherein the regular prism structure can be a triangular prism, a quadrangular prism, a pentagonal prism, etc. This application uses the example of the first limiting portion 41 being a quadrangular prism as an example.

[0134] In some embodiments, the first position-limiting portion 41 includes a first connecting wall 411, a second connecting wall 412, a third connecting wall 413, and a fourth connecting wall 414. The first connecting wall 411 and the second connecting wall 412 are arranged along the second direction Y, and the third connecting wall 413 and the fourth connecting wall 414 are arranged along the third direction Z. The first connecting wall 411 connects the third connecting wall 413 and the fourth connecting wall 414, and the second connecting wall 412 connects the third connecting wall 413 and the fourth connecting wall 414, forming the first position-limiting portion 41. The first connecting wall 411, the second connecting wall 412, the third connecting wall 413, and the fourth connecting wall 414 are connected to the base 31.

[0135] Viewed along a direction X′ opposite to the first direction X, the first connecting wall 411 , the second connecting wall 412 , the third connecting wall 413 and the fourth connecting wall 414 surround the first connecting portion 51 a and the conductive wire 51 b located in the first opening 401 a .

[0136] In some embodiments, the first extension portion 71 includes a first extension wall 711, a second extension wall 712, a third extension wall 713, and a fourth extension wall 714. The first extension wall 711 and the second extension wall 712 are arranged along the second direction Y, and the third extension wall 713 and the fourth extension wall 714 are arranged along the third direction Z. The first extension wall 711 connects the third extension wall 713 and the fourth extension wall 714, and the second extension wall 712 connects the third extension wall 713 and the fourth extension wall 714, forming the first extension portion 71. The first extension wall 711, the second extension wall 712, the third extension wall 713, and the fourth extension wall 714 are connected to the base 31.

[0137] Viewed along a direction X′ opposite to the first direction X, the first extending wall 711 , the second extending wall 712 , the third extending wall 713 and the fourth extending wall 714 surround the first connecting portion 51 a and the conductive wire 51 b located in the second opening 701 a .

[0138] In some embodiments, when injecting the first sealing material, the conductive component 51 is first straightened to make the conductive component 51 substantially perpendicular to the first member 22 , and then the first sealing material is injected into the first limiting portion 41 and the first extending portion 71 . The first sealing material is fixed to form the first sealing member 61 .

[0139] The battery module 100 also includes a second insulating member (not shown). The second insulating member is formed by applying a second insulating material to the first limiting portion 41 and the first extension portion 71 and then curing the material. The second insulating member is partially located in the first limiting portion 41, partially located in the first extension portion 71, and partially located in the first through-hole 311. The viscosity of the second insulating material is greater than that of the first sealing material, which helps to strengthen the waterproofing of the conductive component 51. After the second insulating material cures to form the second insulating member, the first sealing material is injected into the first extension portion 71, and the first sealing material cures to form the first sealing member 61.

[0140] In some embodiments, the stopper 40 includes a second stopper 42 connected to a side of the base 31 facing the first member 22. The second stopper 42 includes a third opening 401b. The through hole 31a includes a second through hole 312 that extends through the base 31 along the first direction X. The first electrical connector 52 is led out through the third opening 401b and the second through hole 312.

[0141] In some embodiments, the seal 60 includes a second seal 62, which is formed by placing a second sealing material on the second limiting portion 42 and then curing it. The second seal 62 is disposed in the gap between the first electrical connector 52 and the second limiting portion 42. The second seal 62 covers the first conductive portion 521, the electrode terminal 212, and the first conductive sheet 223 within the second limiting portion 42, providing sealing and insulation protection.

[0142] In some embodiments, the second sealing material includes one of polyurethane glue, epoxy glue, and silicone glue. Optionally, the second sealing material includes quick-drying glue.

[0143] In some embodiments, the second limiting portion 42 is connected to the first component 22 . The second limiting portion 42 can separate the third opening 401 b and the first recess 301 , thereby reducing the second sealing material from entering the first recess 301 .

[0144] In some embodiments, before the second sealing material is injected, the second through hole 312 is connected to the third opening 401b. After the second sealing material is injected, the second sealing member 62 fills the third opening 401b, so that the second through hole 312 is no longer connected to the third opening 401b.

[0145] In some embodiments, the extension portion 70 includes a second extension portion 72 connected to a side of the base portion 31 facing away from the first member 22. The second extension portion 72 includes a fourth opening 701b. The first electrical connector 52 is extended through the third opening 401b, the second through-hole 312, and the fourth opening 701b. A second sealing member 62 is provided in the gap between the second extension portion 72 and the first electrical connector 52. The second extension portion 72 seals and insulates the first conductive portion 521, the electrode terminal 212, and the first conductive sheet 223. The second sealing member 62 covers the first conductive portion 521, the electrode terminal 212, and the first conductive sheet 223 within the second extension portion 72, further providing sealing and insulation protection.

[0146] Before the second sealing material is poured, the second through hole 312 is connected to the fourth opening 701b. After the second sealing material is poured, the second sealing member 62 fills the fourth opening 701b, so that the second through hole 312 is no longer connected to the fourth opening 701b.

[0147] Before pouring the first insulating material, the second sealing material is poured first, so that the fourth opening 701 b is no longer connected to the second through hole 312 , thereby reducing the first insulating material from entering the second limiting portion 42 and the second extending portion 72 .

[0148] In some embodiments, the limiting portion 40 includes a second limiting portion 42, and the extending portion 70 includes a second extending portion 72. Before the second sealing material is injected, the fourth opening 701b, the second through hole 312, and the third opening 401b are interconnected. The second sealing member 62 is disposed at the fourth opening 701b, the second through hole 312, and the third opening 401b, so that the fourth opening 701b, the second through hole 312, and the third opening 401b are no longer interconnected.

[0149] In some embodiments, the projection of the second limiting portion 42 overlaps the projection of the second extending portion 72 along the first direction X. The second limiting portion 42 and the second extending portion 72 may be any structure surrounding the first conductive portion 521, the electrode terminal 212, and the first conductive sheet 223, such as a cylindrical structure, an elliptical cylindrical structure, a regular prism structure, an anisotropic cylindrical structure, etc., wherein the regular prism structure may be a triangular prism, a quadrangular prism, a pentagonal prism, etc.

[0150] In some embodiments, the second limiting portion 42 includes four walls, and the structure of the second limiting portion 42 is basically the same as that of the first limiting portion 41. The second extending portion 72 includes four walls, and the structure of the first extending portion 71 and the second extending portion 72 is basically the same, which will not be repeated here.

[0151] In some embodiments, the limiting portion 40 includes a third limiting portion 43 connected to the side of the base 31 facing the first member 22. The third limiting portion 43 includes a fifth opening 401c. The through hole 31a includes a third through hole 313. The second electrical connector 53 is led out through the fifth opening 401c and the third through hole 313.

[0152] In some embodiments, the seal 60 includes a third seal 63. The third seal 63 is formed by placing a third sealing material on the third limiting portion 43 and then curing it. The third seal 63 is disposed in the gap between the second electrical connector 53 and the third limiting portion 43. The third seal 63 covers the second conductive portion 531, the electrode terminal 212, and the first conductive sheet 223 within the third limiting portion 43, providing sealing and insulation protection.

[0153] In some embodiments, the third sealing material includes one of polyurethane glue, epoxy glue, and silicone glue. Optionally, the third sealing material includes quick-drying glue.

[0154] In some embodiments, the third limiting portion 43 is connected to the first component 22 . The third limiting portion 43 can isolate the fifth opening 401 c from the first recess 301 , thereby reducing the entry of the sealing material into the first recess 301 .

[0155] In some embodiments, before the third sealing material is injected, the third through hole 313 is connected to the fifth opening 401c. After the third sealing material is injected, the third sealing member 63 fills the fifth opening 401c, so that the third through hole 313 is no longer connected to the fifth opening 401c.

[0156] In some embodiments, the extension portion 70 includes a third extension portion 73 connected to the side of the base portion 31 facing away from the first member 22. The third extension portion 73 includes a sixth opening 701c. The second electrical connector 53 is extended through the fifth opening 401c, the third through-hole 313, and the sixth opening 701c. A third sealing member 63 is provided in the gap between the third extension portion 73 and the second electrical connector 53. The third extension portion 73 seals and insulates the second conductive portion 531, the electrode terminal 212, and the first conductive sheet 223. The third sealing member 63 covers the second conductive portion 531, the electrode terminal 212, and the first conductive sheet 223 within the third extension portion 73, further providing sealing and insulation protection.

[0157] Before the third sealing material is poured, the third through hole 313 is connected to the sixth opening 701 c. After the third sealing material is poured, the third sealing member 63 fills the sixth opening 701 c, so that the third through hole 313 is no longer connected to the sixth opening 701 c.

[0158] Before pouring the first insulating material, the third sealing material is poured first, so that the sixth opening 701 c is no longer connected to the third through hole 313 , thereby reducing the first insulating material from entering the third limiting portion 43 and the third extending portion 73 .

[0159] In some embodiments, the limiting portion 40 includes a third limiting portion 43, and the extending portion 70 includes a third extending portion 73. Before the third sealing material is injected, the sixth opening 701c, the third through hole 313, and the fifth opening 401c are interconnected. The third sealing member 63 is disposed at the sixth opening 701c, the third through hole 313, and the fifth opening 401c, so that the sixth opening 701c, the third through hole 313, and the fifth opening 401c are no longer connected.

[0160] In some embodiments, the projection of the third limiting portion 43 overlaps with the projection of the third extending portion 73 along the first direction X. The third limiting portion 43 and the third extending portion 73 may be any structure surrounding the second conductive portion 531, the electrode terminal 212, and the first conductive sheet 223, such as a cylindrical structure, an elliptical cylindrical structure, a regular prism structure, an anisotropic cylindrical structure, etc., wherein the regular prism structure may be a triangular prism, a quadrangular prism, a pentagonal prism, etc.

[0161] In some embodiments, the third limiting portion 43 includes four walls, and the structure of the third limiting portion 43 is basically the same as that of the first limiting portion 41. The third extension portion 73 includes four walls, and the structure of the first extension portion 71 and the third extension portion 73 of the third limiting portion 43 is basically the same, which will not be repeated here.

[0162] Referring to Figures 1 to 4, 18, 20, and 23 to 25, in some embodiments, the battery module 100 includes a heat sink 90, which is located between the first battery cell assembly 201 and the second battery cell assembly 202. The heat sink 90 is disposed between the first battery cell assembly 201 and the second battery cell assembly 202 to dissipate heat from the first battery cell assembly 201 and the second battery cell assembly 202.

[0163] In some embodiments, the heat sink 90 includes a fourth through hole 901. Before the first insulating material is injected, the fourth through hole 901 is connected to the first recess 301. The fourth through hole 901 is configured to provide the first insulating material to the first recess 301 to form the first insulating member 80. The heat sink 90 includes a first heat dissipation channel 90a, which is connected to the outside. The first heat dissipation channel 90a is connected to the outside, which can dissipate heat from the battery module 100. The first insulating member 80 is positioned in the gap between the electrode terminal 212 and the second component 30 through the fourth through hole 901, thereby strengthening the fixation and heat dissipation of the electrode terminal 212. It can also reduce the need for other glue injection channel structures in the battery module 100, reducing restrictions on the structure of the battery module 100.

[0164] In some embodiments, the heat dissipation element 90 includes a heat dissipation front wall 91 and a heat dissipation rear wall 92 arranged along the third direction Z. Along the third direction Z, a first heat dissipation channel 90 a penetrates the heat dissipation front wall 91 and the heat dissipation rear wall 92 .

[0165] In some embodiments, the battery module 100 can utilize a cooling medium, which passes through the first heat dissipation channel 90a to remove heat. Optionally, the cooling medium includes air and liquid. Optionally, the liquid can be a liquid from the external environment, such as rain.

[0166] Taking air as the cooling medium, in some embodiments, the battery module 100 can be used on a device that is static during use. When the battery module 100 is static, heat can be dissipated by natural wind or external air cooling equipment, such as a fan. Alternatively, the battery module 100 can be used on a device that is dynamic during use, such as a drone or electric scooter. Since the air flow rate is faster when the device is moving, rapid heat dissipation of the battery module 100 can be achieved.

[0167] It is understood that, depending on the direction of movement of the battery module 100, the heat dissipation front wall 91 can serve as either an air inlet or an air outlet. When the side where the heat dissipation front wall 91 is located serves as an air inlet, the side where the heat dissipation rear wall 92 is located serves as an air outlet. When the side where the heat dissipation front wall 91 is located serves as an air outlet, the heat dissipation rear wall 92 serves as an air inlet.

[0168] In some embodiments, the heat dissipation element 90 includes a heat dissipation left wall 93 and a heat dissipation right wall 94 arranged along the second direction Y, the heat dissipation left wall 93 connects the heat dissipation front wall 91 and the heat dissipation rear wall 92, and the heat dissipation right wall 94 connects the heat dissipation front wall 91 and the heat dissipation rear wall 92.

[0169] In some embodiments, the main body 211a includes a left wall 2101, a right wall 2102, a bottom wall 2103, and a top wall 2104. One second sealing portion 2116 is connected to the left wall 2101, another second sealing portion 2116 is connected to the right wall 2102, and the first sealing portion 2115 is connected to the top wall 2104.

[0170] In some embodiments, along the second direction Y, one of the second sealing portions 2116 of the first battery cell assembly 201 and the left wall 2101 of the main body are aligned along the second direction Y, and the other second sealing portion 2116 is located between the right wall 2102 of the main body and the left heat dissipation wall 93. Heat is transferred to the left heat dissipation wall 93 to dissipate heat from the first battery cell assembly 201.

[0171] In some embodiments, along the second direction Y, one of the second sealing portions 2116 of the second battery cell assembly 202 is located between the heat dissipation right wall 94 and the main body left wall 2101 , and the main body right wall 2102 and the other second sealing portion 2116 are arranged along the second direction Y. Heat is transferred to the heat dissipation right wall 94 to dissipate heat from the second battery cell assembly 202 .

[0172] Referring to Figures 16 to 18 and 23 , in some embodiments, the heat sink 90 includes a heat dissipation top wall 95 and a protrusion 96. The heat dissipation top wall 95 connects the heat dissipation front wall 91 and the heat dissipation rear wall 92, and the fourth through hole 901 is provided in the protrusion 96. The protrusion 96 extends from the heat dissipation top wall 95 along a first direction X, and the fourth through hole 901 extends through the protrusion 96 along a third direction Z. A first space 95a is defined between the heat dissipation top wall 95 and the first recess 301 along the first direction X. The first insulating material can enter the first recess 301 through the first space 95a. When the first insulating material is injected, an external device can be inserted through the fourth through hole 901. The first space 95a provides space for the external device, facilitating its insertion and reducing the risk of damage to components within the first recess 301.

[0173] Please refer to Figures 16 to 25. In some embodiments, the protrusion 96 is located outside the first recess 301, reducing the occupation of the first recess 301 by the protrusion 96, reducing the length of the external device extending into the first recess 301, and further reducing the risk of external equipment damaging components in the first recess 301.

[0174] In some embodiments, in the third direction Z, the length of the heat sink 90 is greater than the length of the stacked multiple battery cells 21, and both ends of the heat sink 90 extend out of the battery cell assembly 20, which is conducive to setting the protrusion 96 so that the protrusion 96 is located outside the first recess 301.

[0175] In some embodiments, along the second direction Y, the protrusion 96 is located between the first sealing portion 2115 of the first battery cell assembly 201 and the first sealing portion 2115 of the second battery cell assembly 202, and along the third direction Z, the projection of the protrusion 96 is separated from the projection of the first sealing portion 2115, which can reduce the risk of external equipment extending through the fourth through hole 901 and damaging the first sealing portion 2115.

[0176] In some embodiments, along the second direction Y and along the first direction X, the protrusion 96 extends beyond the main body 211 a , thereby reducing the effect of the protrusion 96 on the heat dissipation of the main body 211 a and facilitating heat dissipation.

[0177] In some embodiments, the heat sink 90 includes two protrusions 96 , which are spaced apart on the heat dissipation top wall 95 along the third direction Z. The first insulating material can be injected simultaneously through the fourth through holes 901 provided on the two protrusions 96 , which helps to improve the glue filling efficiency.

[0178] Along the third direction Z, the distance occupied by the battery cell 21 between the two outermost battery cells 21 is smaller than the distance between the two protrusions 96 , which can increase the distance between the two protrusions 96 and further increase the distance between external devices, thereby reducing the impact of the short distance between external devices on the glue filling efficiency.

[0179] In some embodiments, the fourth through hole 901 is located outside the first recess 301 , so that an external device can pass through the fourth through hole 901 and enter the first recess 301 .

[0180] In some embodiments, a first insulating member 80 is disposed in the fourth through hole 901 . The first insulating member 80 can seal the fourth through hole 901 to reduce the entry of impurities such as dust into the first recess 301 through the fourth through hole 901 .

[0181] In some embodiments, along the third direction Z, the projection of the fourth through hole 901 is separated from the projection of the first sealing portion 2115 , which can reduce the risk of external devices extending through the fourth through hole 901 and damaging the first sealing portion 2115 .

[0182] In some embodiments, along the second direction Y, the protrusion 96 is located between the first sealing portion 2115 of the first group of battery cells 201 and the first sealing portion 2115 of the second group of battery cells 202. Along the third direction Z, the projection of the protrusion 96 is separated from the projection of the first group of battery cells 201, and the projection of the protrusion 96 is separated from the projection of the first sealing portion 2115 of the second group of battery cells 202. This can reduce the risk of external equipment extending through the fourth through hole 901 and damaging the first sealing portion 2115.

[0183] In some embodiments, the fourth through hole 901 and the first heat dissipation channel 90 a are separated, reducing interference between the fourth through hole 901 and the first heat dissipation channel 90 a and facilitating external devices to extend into the first recess 301 through the fourth through hole 901 .

[0184] In some embodiments, the heat dissipation element 90 includes a heat dissipation bottom wall 97 , and the heat dissipation bottom wall 97 and the heat dissipation top wall 95 are arranged along the first direction X.

[0185] Referring to Figures 3 to 7, 29, and 30, in some embodiments, the battery module 100 includes a heat conducting member 130. The heat conducting member 130 includes a first portion 130a and a second portion 130b. Along the third direction Z, the main body 211a includes a main body front wall 2105 and a main body rear wall 2106. The first portion 130a is connected to the main body front wall 2105 or the main body rear wall 2106, and the second portion 130b is connected to the first portion 130a. Along the second direction Y, the second portion 130b is disposed between the main body right wall 2102 and the heat dissipation left wall 93. Heat from the main body front wall 2105 or the main body rear wall 2106 is conducted to the heat dissipation left wall 93 through the second portion 130b, and dissipated through the first heat dissipation channel 90a.

[0186] In some embodiments, the second portion 130b contacts and connects to the left heat dissipation wall 93, which is beneficial to heat dissipation.

[0187] In some embodiments, the battery module 100 includes a first thermally conductive adhesive (not shown), and the second portion 130b is connected to the heat dissipation left wall 93 through the first thermally conductive adhesive, which further facilitates heat dissipation.

[0188] In some embodiments, the thermal conductor 130 includes a first portion 130a and two second portions 130b, wherein the two second portions 130b connect two sides of the first portion 130a along the second direction Y. The first portion 130a is connected to the main body front wall 2105 or the main body rear wall 2106. Along the second direction Y, one of the second portions 130b and the main body left wall 2101 are aligned along the second direction Y, and the other second portion 130b is located between the main body right wall 2102 and the heat dissipation left wall 93, further facilitating heat dissipation.

[0189] In some embodiments, the heat conducting member 130 includes a third portion 130c connected to the first portion 130a. The second portion 130b and the bottom wall 2103 are arranged along the first direction X. Heat from the front wall 2105 or the rear wall 2106 of the main body is dissipated through the third portion 130c.

[0190] In some embodiments, a heat conducting member 130 is provided on both sides of each main body portion 211a along the third direction Z. The first portion 130a of one of the two heat conducting members 130 is connected to the main body front wall 2105, and the first portion 130a of the other heat conducting member 130 is connected to the main body rear wall 2106. This can dissipate heat from the main body front wall 2105 and the main body rear wall 2106 of each main body portion 211a, thereby improving heat dissipation efficiency.

[0191] In some embodiments, the battery module 100 includes a second thermally conductive adhesive 100 b , and the first portion 130 a is connected to the main body front wall 2105 and the main body rear wall 2106 via the second thermally conductive adhesive 100 b , which is beneficial to heat dissipation.

[0192] In some embodiments, the battery module 100 includes a third thermally conductive adhesive (not shown), and the third portion 130c is connected to the bottom wall 2103 of the main body via the third thermally conductive adhesive, which is beneficial to heat dissipation.

[0193] In some embodiments, the battery module 100 includes an insulator 100 c , which is disposed on the third portion 130 c and the bottom wall 2103 of the main body.

[0194] In some embodiments, when observed along the second direction Y, in the third direction Z, there is a third gap 1301 between the two second parts 130b of the heat conducting member 130 located on both sides of the same main body 211a, which reduces the possibility of stacking the two second parts 130b and improves the flatness of the second part 130b, which is conducive to connecting the heat dissipation left wall 93, ensuring the heat dissipation area, facilitating assembly, and facilitating production.

[0195] In some embodiments, when observed along the first direction X, in the third direction Z, there is a fourth gap 1302 between the two third parts 130c of the heat conducting member 130 located on both sides of the same main body 211a, which reduces the possibility of stacking the two third parts 130c, improves the flatness of the third part 130c, ensures the heat dissipation area, facilitates assembly, and is beneficial to production.

[0196] Referring to Figures 6 and 7 , in some embodiments, when the battery cell 21 is not connected to the thermally conductive member 130, the second portion 130b of the thermally conductive member 130 is configured to face away from the first portion 130a, such that the second portion 130b is tilted relative to the first portion 130a, and the angle α between the second portion 130b and the first portion 130a is obtuse. When the battery cell 21 is placed on the thermally conductive member 130, the risk of the second portion 130b scratching the battery cell housing 211 is reduced, facilitating installation of the battery cell 21.

[0197] Referring to FIG. 32 , an embodiment of the present application provides a method for manufacturing the battery module, including the following steps:

[0198] Step 1: Connect the battery cell assembly 20, the second component 30, the limiting portion 40 and the conductive assembly 50;

[0199] Step 2: injecting a sealing material into the limiting portion 40 from the through hole 31 a , and solidifying the sealing material to form a sealing member 60 .

[0200] Referring to Figures 1 to 3 , in some embodiments, step 1 specifically includes aligning the recess opening 301a of the second member 30 toward the cell assembly 20, positioning the electrode terminal 212 of the cell assembly 20 within the first recess 301, aligning the retaining portion 40 with the base 31 facing one side of the cell housing 211, and connecting the conductive component 50 to the cell assembly 20 and extending it through the retaining portion 40 and through-hole 31a. Referring to Figures 1 to 3 , in some embodiments, step 2 specifically includes injecting a sealing material from the through-hole 31a into the retaining portion 40 using an external device, and allowing the sealing material to solidify to form a sealing member 60.

[0201] 26 to 31 , another embodiment of the present application provides a battery pack 200 including the battery module 100 of any of the above embodiments. The battery pack 200 includes a housing 10 and a top cover 16. The top cover 16 is connected to the housing 10 to form a receiving space, and the battery module 100 is located in the receiving space.

[0202] Referring to FIG. 28 , in some embodiments, the housing 10 includes a housing front wall 11, a housing rear wall 12, a housing left wall 13, a housing right wall 14, and a housing bottom wall 15. The housing left wall 13 and the housing right wall 14 are arranged along the second direction Y, and the housing front wall 11 and the housing rear wall 12 are arranged along the third direction Z. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other. The housing front wall 11 connects the housing left wall 13 and the housing right wall 14, the housing rear wall 12 connects the housing left wall 13 and the housing right wall 14, and the housing bottom wall 15 connects the housing front wall 11, the housing rear wall 12, the housing left wall 13, and the housing right wall 14 to form a storage space. Optionally, the battery cell assembly 20, the second component 30, the limiting portion 40, part of the conductive assembly 50, and the sealing member 60 are all accommodated in the storage space.

[0203] In some embodiments, along the first direction X, the second member 30 does not extend beyond any one of the housing front wall 11 , the housing rear wall 12 , the housing left wall 13 , and the housing right wall 14 .

[0204] In some embodiments, the housing 10 includes a bracket 17 that connects the housing front wall 11 , the housing rear wall 12 , the housing left wall 13 , and the housing right wall 14 . The bracket 17 and the top cover 16 are arranged along a first direction X, and the top cover 16 is connected to the bracket 17 .

[0205] In some embodiments, at least one of the housing front wall 11, the housing rear wall 12, the housing left wall 13, the housing right wall 14, the housing bottom wall 15, and the top cover 16 comprises a thermally conductive material to improve heat dissipation performance. Optionally, the housing front wall 11, the housing rear wall 12, the housing left wall 13, the housing right wall 14, the housing bottom wall 15, and the top cover 16 all comprise a metal thermally conductive material and a thermally conductive insulating material. The insulating material may cover the outer surface of the metal thermally conductive material. Optionally, the metal thermally conductive material comprises aluminum.

[0206] Please refer to Figures 28 and 29. In some embodiments, at least one of the housing front wall 11, the housing rear wall 12, the housing left wall 13, the housing right wall 14, the housing bottom wall 15 and the top cover 16 is provided with a heat sink to further improve the heat dissipation performance.

[0207] Optionally, along the second direction Y, a first heat sink 131 is provided on the side of the left housing wall 13 facing away from the right housing wall 14 , and a second heat sink 141 is provided on the side of the right housing wall 14 facing away from the left housing wall 13 . Optionally, the top cover 16 is provided with a third heat sink 161 .

[0208] In some embodiments, the housing 10 includes housing through-holes 101, which include a first housing through-hole 10a and a second housing through-hole 10b. The first housing through-hole 10a extends through the housing front wall 11, and the second housing through-hole 10b extends through the housing rear wall 12. A first heat dissipation channel 90a connects the first housing through-hole 10a and the second housing through-hole 10b, and the first heat dissipation channel 90a communicates with the outside through the first housing through-hole 10a and the second housing through-hole 10b.

[0209] It is understood that, depending on the movement direction of the battery module 100, the first housing through-hole 10a can serve as either an air inlet or an air outlet. When the first housing through-hole 10a serves as an air inlet, the second housing through-hole 10b serves as an air outlet. When the first housing through-hole 10a serves as an air outlet, the second housing through-hole 10b serves as an air inlet.

[0210] Please refer to Figures 26 to 28. In some embodiments, the heat dissipation front wall 91 is connected to the housing front wall 11, and the heat dissipation rear wall 92 is connected to the housing rear wall 12.

[0211] In some embodiments, the battery pack 200 further includes a first fixing member 210. The housing front wall 11 is provided with a first recessed opening 111, and the heat dissipation front wall 91 is provided with a second recessed opening 911. The first fixing member 210 passes through the first recessed opening 111 and connects to the second recessed opening 911, thereby fixing the heat dissipation front wall 91 to the housing front wall 11. Optionally, the first fixing member 210 includes a screw.

[0212] In some embodiments, the battery module 100 further includes a second fixing member (not shown). The housing rear wall 12 is provided with a third recessed opening 121, and the heat dissipation rear wall 92 is provided with a fourth recessed opening 921. The second fixing member passes through the third recessed opening 121 and connects to the fourth recessed opening 921, thereby securing the heat dissipation rear wall 92 to the housing rear wall 12. Optionally, the second fixing member includes a screw.

[0213] Referring to Figures 25 to 28 , in some embodiments, the heat sink 90 includes a heat dissipation protrusion 90b disposed within the first heat dissipation channel 90a and extending along the third direction Z. Along the third direction Z, one end surface of the heat dissipation protrusion 90b is coplanar with the heat dissipation front wall 91, and the other end surface is coplanar with the heat dissipation rear wall 92. A second recessed opening 911 is disposed on one end surface, and a fourth recessed opening 921 is disposed on the other end surface. The second and fourth recessed openings 911 and 921 are aligned along the third direction Z. Optionally, the heat dissipation protrusion 90b is disposed on a side surface of the heat dissipation left wall 93 facing the heat dissipation right wall 94. Optionally, the heat dissipation protrusion 90b is disposed on a side surface of the heat dissipation right wall 94 facing the heat dissipation left wall 93. Optionally, the heat dissipation protrusion 90b is disposed on both surfaces of the heat dissipation left wall 93 and the heat dissipation right wall 94 facing each other.

[0214] In some embodiments, the battery module 100 further includes a fourth sealant (not shown). The fourth sealant is disposed between the housing front wall 11 and the heat dissipation front wall 91. The fourth sealant connects the housing front wall 11 and the heat dissipation front wall 91, thereby enhancing the seal between the housing front wall 11 and the heat dissipation front wall 91. Optionally, the fourth sealant is bonded to the housing front wall 11 and the heat dissipation front wall 91. Optionally, the fourth sealant comprises foam. Optionally, the fourth sealant comprises sealant.

[0215] In some embodiments, the battery module 100 further includes a fifth sealant (not shown). The fifth sealant is disposed between the housing rear wall 12 and the heat dissipation rear wall 92. The fifth sealant connects the housing rear wall 12 and the heat dissipation rear wall 92, thereby enhancing the seal between the housing rear wall 12 and the heat dissipation rear wall 92. Optionally, the fifth sealant is bonded to the housing rear wall 12 and the heat dissipation rear wall 92. Optionally, the fifth sealant comprises foam. Optionally, the fifth sealant comprises sealant.

[0216] In some embodiments, the front wall 11 of the shell is provided with a first fixing hole 112, and the first fixing hole 112 passes through the front wall 11 of the shell. The first fixing hole 112 is connected to the fourth through hole 901. After the first insulating member 80 is provided in the first recess 301, the fourth through hole 901 can be used to discharge the gas in the battery module 100, achieve pressure balance inside and outside the battery module 100, and improve the safety of the battery pack 200. In some embodiments, the battery pack 200 also includes a first fastener 100a, and the first fastener 100a is provided in the first fixing hole 112 and the fourth through hole 901, which can close the fourth through hole 901, reduce dust and other impurities from entering the first space 95a through the fourth through hole 901, and also play the role of connecting the heat sink 90 to the front wall 11 of the shell. Optionally, the first fastener 100a includes a screw.

[0217] In some embodiments, the fourth through hole 901 is separated from the first insulating member 80 , which facilitates the first fastener 100 a to connect to the fourth through hole 901 .

[0218] It is understandable that when exhaust is required, the first fastener 100a can be removed. After exhaust is completed, the first fastener 100a can be set in the first fixing hole 112 and the fourth through hole 901 to continue to close the fourth through hole 901 to reduce dust and other impurities from entering the battery module 100.

[0219] In some embodiments, the battery pack 200 includes a sealant, which is disposed in the fourth through hole 901 to reduce the entry of impurities such as dust into the first recess 301 through the fourth through hole 901. Optionally, the sealant includes sealant.

[0220] In some embodiments, the battery pack 200 includes a waterproof breathable valve (not shown), which is configured to seal the first fixing hole 112 . The waterproof breathable valve can prevent external impurities from entering the first space and can be used to discharge gas from the battery pack 200 .

[0221] Referring to Figures 28 to 30 , in some embodiments, when the battery module 100 is positioned within the receiving space, the two second portions 130b located on the same side of the two heat-conducting members 130 are located between the left housing wall 13 and the left main body wall 2101, and are connected to the left housing wall 13. The two second portions 130b located on the same side of the two heat-conducting members 130 are located between the right main body wall 2102 and the left heat-dissipating wall 93, and are connected to the left heat-dissipating wall 93. The two third portions 130c located on the same side of the two heat-conducting members 130 are located between the bottom housing wall 15 and the bottom main body wall 2103, and are connected to the bottom housing wall 15. The second portion 130b is connected to the left housing wall 13 and the left heat-dissipating wall 93, while the third portion 130c is connected to the bottom housing wall 15. Both the second portion 130b and the third portion 130c conduct heat away from the main body 211a, further improving heat dissipation efficiency.

[0222] Referring to Figures 28 to 30, in some embodiments, the two second portions 130b of the heat conductor 130 are configured to be arranged in a direction away from the first portion 130a, so that the two second portions 130b are flared. When the battery cell assembly 20, the heat sink 90, and the heat conductor 130 are installed in the housing 10, the left wall 13 of the housing and the left heat dissipation wall 93 can squeeze the inclined second portion 130b, so that the second portion 130b is close to the first portion 130a and is roughly parallel to the surface of the left wall 13 of the housing. Optionally, after assembly is completed, the second portion 130b is perpendicular to the first portion 130a. This not only reduces the risk of scratching the battery cell housing 211 and facilitates the installation of the battery cell 21, but also reduces the space reserved for installing the battery cell 21, which is conducive to reducing the size of the heat conductor 130, thereby reducing the space occupied by the heat conductor 130 and improving space utilization.

[0223] Please refer to Figure 6. In some embodiments, before assembly, the first angle A of the second portion 130b folded relative to the first portion 130a satisfies 3°≤A≤20°, and A can be any one of 3°, 4°, 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°, 15°, 16°, 17°, 18°, 19°, and 20°.

[0224] 31 , in some embodiments, the battery pack 200 includes a second circuit board 220 . The second connecting portion 51 c is connected to the second circuit board 220 and can transmit the collected information to the second circuit board 220 .

[0225] Optionally, the second circuit board 220 includes a BMS component (Battery Management System), which includes multiple electronic components. The multiple electronic components can realize functions such as control, protection, communication, power calculation, signal transmission, and power transmission of the battery cell 21.

[0226] Optionally, the second circuit board 220 includes a flexible printed circuit (FPC). Optionally, the second circuit board 220 includes a printed circuit board (PCB), and a plurality of wires (not shown) are provided on the second circuit board 220.

[0227] Referring to Figures 28 to 30 , in some embodiments, the battery pack 200 includes a first elastic member 230 . The battery cells 21 include a first battery cell 21a, a second battery cell 21b, and a third battery cell 21c. Along the third direction Z, the first battery cell 21a and the second battery cell 21b are located at the outermost positions, and the third battery cell 21c is located between the first battery cell 21a and the second battery cell 21b. The first elastic member 230 is disposed between the front wall 11 of the housing and the first portion 130a connected to the first battery cell 21a. This provides expansion space for the battery cells 21 and reduces the amount of heat dissipated from the first portion 130a connected to the first battery cell 21a through the front wall 11 of the housing. This reduces the temperature difference between the multiple battery cells 21, thereby improving the performance of the battery pack 200.

[0228] In some embodiments, the first elastic member 230 is disposed between the housing rear wall 12 and the first portion 130a connected to the second battery cell 21b, providing expansion space for the battery cell 21 and reducing the amount of heat dissipated from the first portion 130a connected to the second battery cell 21b through the housing rear wall 12. This reduces the temperature difference between the multiple battery cells 21, further improving the performance of the battery pack 200. Optionally, the first elastic member 230 includes foam.

[0229] 3 , in some embodiments, the battery pack 200 includes a second elastic member 240. The second elastic member 240 is disposed between adjacent first portions 130a to provide expansion space for the battery cells 21. Optionally, the second elastic member 240 includes foam.

[0230] 1 , 6 , and 11 to 15 , when the battery pack 200 is installed, the battery cells 21 are connected to the heat conducting member 130 , thereby stacking a plurality of battery cells 21 to form a first battery cell assembly 201 and a second battery cell assembly 202 , and then installing the second component 30 and the heat dissipating member 90 .

[0231] Straighten the conductive component 51, and place the first sealing material on the first limiting portion 41 and the first extension portion 71 to form a first sealing member 61. Place the second sealing material on the second limiting portion 42 and the second extension portion 72 to form a second sealing member 62. Place the third sealing material on the third limiting portion 43 and the third extension portion 73 to form a third sealing member 63. The second component 30 is sealed by the first sealing member 61, the second sealing member 62, and the third sealing member 63. Then, invert the battery module 100 (as shown in FIG. 19 ), and inject the first insulating material from the fourth through hole 901 into the first recess 301. After the first insulating material solidifies, it forms the first insulating member 80. Install the top cover 16 to complete the assembly of the battery pack 200.

[0232] Referring to FIG. 33 , the present application further provides an electrical device 300 employing the battery pack 200. In one embodiment, the electrical device 300 of the present application may be, but is not limited to, electronic equipment, drones, backup power supplies, electric vehicles, electric motorcycles, electric power-assisted bicycles, power tools, large household battery modules, and the like.

[0233] Those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present application and are not intended to limit the present application. As long as they are within the spirit of the present application, appropriate changes and modifications to the above embodiments fall within the scope disclosed in the present application.

Claims

1. A battery module, characterized in that: include: A cell assembly, the cell assembly comprising a first member and a plurality of cells, each of the cells comprising a cell housing and an electrode terminal, the electrode terminal being led out of the cell housing, the first member comprising a plurality of first member openings, the electrode terminals passing through the first member openings, and the first member and the cell housing being arranged along a first direction; A second member, wherein an insulating material is provided on an outer surface of the second member, the second member comprises a base, the base is provided on a side of the first member away from the battery cell housing, and the second member comprises a through hole, and the through hole penetrates the base along the first direction; A limiting portion, the limiting portion is connected to a side of the base portion facing the battery cell housing, and the limiting portion includes an opening; A conductive component, the conductive component is connected to the battery core component, a portion of the conductive component is disposed at the limiting portion, and the conductive component is led out from the opening and the through hole; A sealing member is arranged in a gap between the conductive component and the limiting portion.

2. The battery module according to claim 1, characterized in that: The through hole is configured to provide a sealing material to the stop portion to form the seal.

3. The battery module according to claim 2, characterized in that: The battery module includes an extension portion, the extension portion is connected to a side of the base portion away from the battery cell housing, and the extension portion includes an extension portion opening; The conductive component is led out from the opening, the through hole and the extension opening; The sealing member is at least partially disposed in a gap between the conductive component and the extension portion.

4. The battery module according to claim 3, characterized in that: The limiting portion includes a first limiting portion, and the first limiting portion includes a first opening; The through hole comprises a first through hole; The conductive component is connected to the first member and is led out from the first opening and the first through hole.

5. The battery module according to claim 4, characterized in that: The sealing member includes a first sealing member, and the first sealing member is at least partially disposed in a gap between the conductive component and the first limiting portion.

6. The battery module according to claim 5, characterized in that: The conductive component includes a first connection portion and a wire, the first connection portion is connected to the first member, and the wire is connected to the first connection portion and extends out from the first opening and the first through hole; The first sealing element at least partially covers a connection between the first connecting portion and the first component.

7. The battery module according to claim 5, characterized in that: The extension portion includes a first extension portion, the first extension portion includes a second opening, and the conductive component is led out from the first opening, the first through hole, and the second opening; The first sealing member is at least partially disposed in a gap between the first extension portion and the conductive component.

8. The battery module according to any one of claims 5 to 7, characterized in that: The first sealing member is configured to be formed by curing the first sealing material.

9. The battery module according to claim 7, characterized in that: Along the first direction, a projection of the first limiting portion overlaps with a projection of the first extending portion.

10. The battery module according to claim 8, characterized in that: The battery module further includes a second insulating member, wherein the second insulating member is configured to be formed by arranging a second insulating material on the first limiting portion and the first extending portion and then curing the second insulating material; Part of the second insulating member is located at the first limiting portion, part of the second insulating member is located at the first extending portion, and part of the second insulating member is located at the first through hole, and the first sealing member is located at the first extending portion; The viscosity of the second insulating material is greater than the viscosity of the first sealing material.

11. The battery module according to any one of claims 3 to 10, characterized in that: When viewed from a direction opposite to the first direction, the through hole is located in a space enclosed by the limiting portion.

12. The battery module according to any one of claims 3 to 11, characterized in that: The first component includes a first circuit board, the first circuit board is provided with a first conductive sheet, and the adjacent electrode terminals pass through openings of the first component and are stacked and connected to the first conductive sheet.

13. The battery module according to claim 12, characterized in that: The conductive component includes a first electrical connector, the limiting portion includes a second limiting portion, and the sealing member includes a second sealing member; A portion of one of the electrode terminals, a portion of one of the first conductive sheets, and a portion of the first electrical connector are disposed on the second limiting portion; The second sealing member covers a portion of the electrode terminal, a portion of the first conductive sheet, and a portion of the first electrical connector.

14. The battery module according to any one of claims 3 to 13, characterized in that: The second member includes four first side walls, the four first side walls are connected to the base and form a first recess, and at least a portion of the electrode terminal is located in the first recess; The battery module further includes a first insulating member, at least a portion of which is disposed in a gap between the electrode terminal and the second member.

15. The battery module according to claim 14, characterized in that: The first insulating member is configured to provide a first insulating material to the first recess to form the first insulating member, the first insulating member covering at least a portion of the electrode terminal.

16. The battery module according to claim 14, characterized in that: The second member includes a connecting protrusion, and the connecting protrusion is connected to the first member; A first gap is formed between the first component and the base, and the first insulating member is disposed in the first gap.

17. The battery module according to claim 14, characterized in that: Each of the battery cells includes an electrode assembly, the battery cell housing includes a main body and a sealing portion, and the electrode assembly is disposed on the main body; The sealing part includes a first sealing part, the electrode terminal is connected to the electrode assembly and is led out from the first sealing part, and each of the first sealing parts is at least partially located in the first recess; The first insulating member covers at least a portion of each of the first sealing portions.

18. The battery module according to claim 14, characterized in that: The first recessed portion and the limiting portion are arranged separately.

19. The battery module according to claim 4, characterized in that: The battery module further includes a separator, and the separator is located between the first component and the first limiting portion.

20. The battery module according to any one of claims 3 to 19, characterized in that: The limiting portion, the extending portion and the base are integrally formed.

21. The battery module according to any one of claims 1 to 20, characterized in that: The conductive component is configured to transmit electrical signal information of the battery cell component and / or transmit power of the battery cell component.

22. A battery pack, characterized in that: Comprising a battery module as described in any one of claims 1 to 21, the battery pack comprises an outer shell and a top cover, the outer shell and the top cover form a receiving space, and the battery module is located in the receiving space.

23. An electrical equipment, characterized in that: Comprising the battery pack of claim 22.

24. A method for manufacturing a battery module according to any one of claims 1 to 21, characterized in that: The following steps are involved: Connecting the battery cell assembly, the second component, the limiting portion and the conductive assembly; A sealing material is injected into the limiting portion from the through hole, and the sealing material is solidified to form a sealing member.

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