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

Abstract

The present application discloses a battery module and a manufacturing method therefor, a battery pack, and an electric device. The battery module comprises a battery cell assembly, a first component, a first insulating member and a second component. The battery cell assembly comprises a plurality of battery cells, each battery cell comprises a battery cell casing and electrode terminals, and the electrode terminals are led out from the battery cell casing. The battery cell assembly and the first component are arranged in a first direction, the first component is provided with a first recess, and part of each electrode terminal is disposed in the first recess. At least part of the first insulating member is disposed in the gap between the electrode terminals and the first component. The second component is provided with a first through hole, and the second component and the first component are arranged in the first direction. The first recess comprises a first opening facing the second component, and the projection of the first through hole and the projection of the first opening overlap in the first direction. The first insulating member is disposed in the gap between the electrode terminals and the first component, so that the sealing and insulating protection of the electrode terminals is enhanced, thereby enhancing the sealing and insulating protection of the battery module.

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 packs are widely used in drones, electric vehicles, smart energy storage equipment and other fields. The application environment of electrical equipment may be outdoors, and it is necessary to strengthen the sealing and insulation protection of the battery pack.

[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, which can enhance the sealing and insulation protection of the battery module and the battery pack.

[0005] An embodiment of the present application provides a battery module, comprising a cell assembly, a first component, a first insulating component, and a second component. The cell assembly comprises a plurality of cells, each cell comprising a cell housing and an electrode terminal, the electrode terminal being led out from the cell housing. The cell assembly and the first component are arranged along a first direction, the first component having a first recess, and a portion of each electrode terminal being disposed in the first recess. At least a portion of the first insulating component is disposed in a gap between the electrode terminal and the first component. The second component is provided with a first through hole, and the second component and the first component are arranged along a first direction. The first recess comprises a first opening facing the second component, and along the first direction, the projection of the first through hole and the projection of the first opening overlap. The present application disposes a portion of each electrode terminal in the first recess, and by disposing the first insulating component in the gap between the electrode terminal and the first component, the sealing and insulation protection of the electrode terminal is enhanced, thereby enhancing the sealing and insulation protection of the battery module.

[0006] Optionally, in some embodiments of the present application, the second member includes a top wall and a protrusion, with the first through-hole extending through the protrusion. Along a first direction, the protrusion extends from the top wall. Along the first direction, a first space exists between the top wall and the first opening. When the first insulating material is injected, an external device extends through the first through-hole. The first space provides space for the external device, facilitating insertion and reducing the risk of damage to components within the first recessed portion.

[0007] 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.

[0008] Optionally, in some embodiments of the present application, the first through hole is located outside the first recess, so as to facilitate external equipment to pass through the first through hole into the first recess.

[0009] Optionally, in some embodiments of the present application, the first through hole is separated from the first insulating member to facilitate connection of the first fastener to the first through hole.

[0010] Optionally, in some embodiments of the present application, a first insulating member is provided in the first through hole, and the first through hole can be sealed by the first insulating member to reduce dust and other impurities from entering the first recess through the first through hole.

[0011] Optionally, in some embodiments of the present application, in the third direction, the length of the second component is greater than the length of the multiple battery cells stacked, and both ends of the second component extend out of the battery cell assembly, which is conducive to setting the protrusion so that the protrusion is located outside the first recess.

[0012] 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.

[0013] Optionally, in some embodiments of the present application, the second component and the multiple battery cells are arranged in the second direction, and along the first direction, the protrusion extends beyond the main body, reducing the impact of the protrusion on the heat dissipation of the main body, which is beneficial to heat dissipation, and the first direction is perpendicular to the second direction.

[0014] 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, and the first direction is perpendicular to the third direction, which can reduce the risk of external equipment extending through the first through hole and damaging the first sealing portion.

[0015] Optionally, in some embodiments of the present application, the battery cell assembly includes a first group of battery cells and a second group of battery cells, the first group of battery cells and the second group of battery cells are arranged along a second direction, and the second member is located between the first group of battery cells and the second group of battery cells. The first group of battery cells includes at least two battery cells stacked along a third direction, and the second group of battery cells includes at least two battery cells stacked along the third direction. The first direction, the second direction, and the third direction are perpendicular to each other. Along the second direction, at least a portion of the protrusion is located between the first sealing portion of the first group of battery cells and the first sealing portion of the second group of battery cells, which can reduce the risk of external equipment extending through the first through hole and damaging the first sealing portion.

[0016] Optionally, in some embodiments of the present application, the battery module further comprises a third member, the electrode terminal passing through the third member and connected to a side of the third member facing away from the cell housing. The first insulating member covers at least a portion of the third member to seal and insulate the third member.

[0017] Optionally, in some embodiments of the present application, the electrode terminal, the third component and the first component are bonded and connected via a first insulating member.

[0018] Optionally, in some embodiments of the present application, the battery module further comprises a first position-limiting portion. The first member comprises a base, the first position-limiting portion being connected to a side of the base facing away from the third member, and the first position-limiting portion comprising a second opening. The first member comprises a second through-hole extending through the base. The battery module further comprises a conductive component connected to the third member and extending through the second opening and the second through-hole.

[0019] Optionally, in some embodiments of the present application, the battery module further includes a second insulating member, at least a portion of which is disposed in a gap between the conductive component and the first limiting portion to seal and insulate a portion of the conductive component.

[0020] Optionally, in some embodiments of the present application, before the second insulating member is provided in the gap, the second through hole is connected to the second opening, and after the second insulating member is provided in the gap, the second through hole and the second opening are isolated from each other by the second insulating member.

[0021] Optionally, some embodiments of the present application further include a second limiting portion, connected to a side of the base portion facing the third member, the second limiting portion including a third opening. The conductive component is led out through the third opening, the second through hole, and the second opening. A second insulating member is at least partially disposed in a gap between the second limiting portion and the conductive component to provide sealing and insulation protection for the conductive component located in the second limiting portion.

[0022] Optionally, in some embodiments of the present application, the battery module further includes a third insulating member, which is configured to be formed by curing a third insulating material provided on the first limiting portion and the second limiting portion. The third insulating member is partially located in the second limiting portion, partially located in the first limiting portion, and partially located in the second through hole. The viscosity of the third insulating material is greater than that of the second insulating material, which helps to strengthen the waterproofness of the conductive component. After the third insulating material is cured to form the third insulating member, the second insulating material is poured into the first limiting portion, and the second insulating material is cured to form the second insulating material.

[0023] Optionally, in some embodiments of the present application, the battery module includes a first seal, which is located between the third component and the second limiting portion along the first direction, and can isolate the first recess and the third opening, further reducing the second insulating material from entering the first recess.

[0024] Optionally, in some embodiments of the present application, the outer surface of the first component is insulating to reduce the risk of short circuit.

[0025] Optionally, in some embodiments of the present application, the first component includes a base and four first side walls, and the base and the four first side walls enclose a first recess.

[0026] Optionally, in some embodiments of the present application, a first opening is formed at one end of the four first side walls away from the base.

[0027] Optionally, in some embodiments of the present application, the first insulating member is configured to be formed by solidifying the first insulating material.

[0028] Optionally, in some embodiments of the present application, the first through hole is configured to provide a first insulating material to the first recess through the first through hole to form a first insulating member, which is conducive to setting the first insulating member.

[0029] Optionally, in some embodiments of the present application, the second component is a heat sink, and the heat sink includes a first heat dissipation channel, and the first heat dissipation channel is connected to the outside to facilitate heat dissipation.

[0030] Optionally, in some embodiments of the present application, the first through hole and the first heat dissipation channel are separated, thereby reducing interference between the first through hole and the first heat dissipation channel and facilitating the external device to extend into the first recess through the first through hole.

[0031] Optionally, in some embodiments of the present application, the first recess is arranged toward the battery cell assembly along a direction opposite to the first direction.

[0032] Another embodiment of the present application provides a battery module, comprising a cell assembly, a first component, a first insulating member, and a second component. The cell assembly comprises a plurality of cells, each cell comprising a cell housing and an electrode terminal, the electrode terminal extending from the cell housing. The cell assembly and the first component are arranged along a first direction, the first component having a first recess, and a portion of each electrode terminal being disposed in the first recess. At least a portion of the first insulating member is disposed in a gap between the electrode terminal and the first component. The second component is provided with a first through-hole, and the second component and the first component are arranged along the first direction. The second component comprises a top wall and a protrusion, the protrusion extending from the top wall, and the first through-hole passing through the protrusion. Along the first direction, the protrusion extends from the top wall. The first recess comprises a first opening facing the second component. Along the first direction, a first space exists between the top wall and the first opening, and when viewed along a third direction, at least a portion of the first through-hole is located within the first space, the third direction being perpendicular to the first direction.

[0033] This application positions a portion of each electrode terminal within the first recess and places a first insulating member in the gap between the electrode terminal and the first member, thereby enhancing the sealing and insulation protection of the battery module. Furthermore, by providing a first through-hole in the convex portion and positioning the first insulating member through the first through-hole toward the first recess, the need for additional channel structures within the battery module is reduced, thereby reducing restrictions on the battery module structure.

[0034] Optionally, in some embodiments of the present application, along the third direction, the projection of the first through hole and the projection of the first space overlap.

[0035] Optionally, in some embodiments of the present application, in the first direction, a projection of the first through hole along the third direction is located between a projection of the top wall along the third direction and a projection of the first recess along the third direction.

[0036] 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.

[0037] Optionally, in some embodiments of the present application, the first through hole is located outside the first recess, so as to facilitate external equipment to pass through the first through hole into the first recess.

[0038] Optionally, in some embodiments of the present application, the first through hole is separated from the first insulating member to facilitate connection of the first fastener to the first through hole.

[0039] Optionally, in some embodiments of the present application, a first insulating member is provided in the first through hole, and the first through hole can be sealed by the first insulating member to reduce dust and other impurities from entering the first recess through the first through hole.

[0040] Optionally, in some embodiments of the present application, in the third direction, the length of the second component is greater than the length of the multiple battery cells stacked, and both ends of the second component extend out of the battery cell assembly, which is conducive to setting the protrusion so that the protrusion is located outside the first recess.

[0041] 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.

[0042] Optionally, in some embodiments of the present application, the second component and the multiple battery cells are arranged in the second direction, and along the first direction, the protrusion extends beyond the main body, reducing the impact of the protrusion on the heat dissipation of the main body, which is beneficial to heat dissipation, and the first direction is perpendicular to the second direction.

[0043] 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, and the first direction is perpendicular to the third direction, which can reduce the risk of external equipment extending through the first through hole and damaging the first sealing portion.

[0044] Optionally, in some embodiments of the present application, the battery cell assembly includes a first group of battery cells and a second group of battery cells, the first group of battery cells and the second group of battery cells are arranged along a second direction, and the second member is located between the first group of battery cells and the second group of battery cells. The first group of battery cells includes at least two battery cells stacked along a third direction, and the second group of battery cells includes at least two battery cells stacked along the third direction. The first direction, the second direction, and the third direction are perpendicular to each other. Along the second direction, at least a portion of the protrusion is located between the first sealing portion of the first group of battery cells and the first sealing portion of the second group of battery cells, which can reduce the risk of external equipment extending through the first through hole and damaging the first seal.

[0045] Optionally, in some embodiments of the present application, the battery module further comprises a third member, the electrode terminal passing through the third member and connected to a side of the third member facing away from the cell housing. The first insulating member covers at least a portion of the third member to seal and insulate the third member.

[0046] Optionally, in some embodiments of the present application, the electrode terminal, the third component and the first component are bonded and connected via a first insulating member.

[0047] Optionally, in some embodiments of the present application, the battery module further comprises a first position-limiting portion. The first member comprises a base, the first position-limiting portion being connected to a side of the base facing away from the third member, and the first position-limiting portion comprising a second opening. The first member comprises a second through-hole extending through the base. The battery module further comprises a conductive component connected to the third member and extending through the second opening and the second through-hole.

[0048] Optionally, in some embodiments of the present application, the battery module further includes a second insulating member, at least a portion of which is disposed in a gap between the conductive component and the first limiting portion to seal and insulate a portion of the conductive component.

[0049] Optionally, in some embodiments of the present application, before the second insulating member is provided in the gap, the second through hole is connected to the second opening, and after the second insulating member is provided in the gap, the second through hole and the second opening are isolated from each other by the second insulating member.

[0050] Optionally, some embodiments of the present application further include a second limiting portion, the second limiting portion being connected to a side of the base portion facing the third member, the second limiting portion including a third opening. The conductive component is led out through the third opening, the second through hole, and the second opening. A second insulating member is at least partially disposed in a gap between the second limiting portion and the conductive component, providing sealing and insulation protection for the conductive component within the second limiting portion.

[0051] Optionally, in some embodiments of the present application, the battery module further includes a third insulating member, which is configured to be formed by curing a third insulating material provided on the first limiting portion and the second limiting portion. The third insulating member is partially located in the second limiting portion, partially located in the first limiting portion, and partially located in the second through hole. The viscosity of the third insulating material is greater than that of the second insulating material, which helps to strengthen the waterproofness of the conductive component. After the third insulating material is cured to form the third insulating member, the second insulating material is poured into the first limiting portion, and the second insulating material is cured to form the second insulating material.

[0052] Optionally, in some embodiments of the present application, the battery module includes a first seal, which is located between the third component and the second limiting portion along the first direction, and can isolate the first recess and the third opening, further reducing the second insulating material from entering the first recess.

[0053] Optionally, in some embodiments of the present application, the outer surface of the first component is insulating to reduce the risk of short circuit.

[0054] Optionally, in some embodiments of the present application, the first component includes a base and four first side walls, and the base and the four first side walls enclose a first recess.

[0055] Optionally, in some embodiments of the present application, a first opening is formed at one end of the four first side walls away from the base.

[0056] Optionally, in some embodiments of the present application, the first insulating member is configured to be formed by solidifying the first insulating material.

[0057] Optionally, in some embodiments of the present application, the first through hole is configured to provide a first insulating material to the first recess through the first through hole to form a first insulating member, which is conducive to setting the first insulating member.

[0058] Optionally, in some embodiments of the present application, the second component is a heat sink, and the heat sink includes a first heat dissipation channel, and the first heat dissipation channel is connected to the outside to facilitate heat dissipation.

[0059] Optionally, in some embodiments of the present application, the first through hole and the first heat dissipation channel are separated, thereby reducing interference between the first through hole and the first heat dissipation channel and facilitating the external device to extend into the first recess through the first through hole.

[0060] Optionally, in some embodiments of the present application, the first recess is arranged toward the battery cell assembly along a direction opposite to the first direction.

[0061] Another embodiment of the present application provides a battery module comprising a cell assembly, a first component, a third component, a second stopper, a conductive component, and a second insulating member. The cell assembly includes a plurality of cells, each of which includes a cell housing and electrode terminals, with the electrode terminals extending from the cell housing. The third component includes a first hole and a second hole, through which the electrode terminals pass. The cell housing and the third component are arranged along a first direction. The outer surface of the first component is provided with insulating material. The first component includes a base, which is located on a side of the third component away from the cell housing. The first component includes a second through-hole extending through the base along the first direction. The second stopper is located on a side of the base facing the cell housing and includes a third opening. The conductive component is connected to the cell assembly, with a portion of the conductive component located within the second stopper and extending through the third opening and the second through-hole. The second insulating member is at least partially located in the gap between the second stopper and the conductive component.

[0062] The second insulating member 90 is formed by placing a second insulating material in the gap between the conductive component and the second stopper and then curing it. The second stopper prevents the second insulating material from overflowing outside the second stopper. The second insulating member 90 strengthens the insulation and fixation of the conductive component 110, further improving the safety of the battery module 100.

[0063] 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, the battery module is located in the receiving space, and the sealing and insulation protection of the battery pack are enhanced.

[0064] Optionally, in some embodiments of the present application, the battery pack further includes a second circuit board, and the second circuit board is electrically connected to the battery cell assembly.

[0065] Optionally, in some embodiments of the present application, the battery cell assembly and the top cover are arranged along a first direction. Along the first direction, the second component does not extend beyond the housing.

[0066] Optionally, in some embodiments of the present application, the battery pack further includes a first fastener, the outer shell is provided with a first fixing hole, the first fastener is provided in the first fixing hole and the first through hole, to reduce the entry of dust and other impurities into the first recess through the first through hole, and also serves to connect the second component to the front wall of the outer shell.

[0067] Optionally, in some embodiments of the present application, the battery pack includes a seal, which is provided in the first through hole to reduce dust and other impurities from entering the first recess through the first through hole.

[0068] An embodiment of the present application further provides an electrical device, comprising the battery pack according to any of the above embodiments.

[0069] One embodiment of the present application further provides a method for manufacturing the battery module of any of the above embodiments, comprising the following steps: connecting the battery cell assembly, the second component, and the first component; inverting the battery module; injecting a first insulating material from the first through-hole into the first recess; and curing the first insulating material to form a first insulating member.

[0070] In the present application, a first insulating member is provided toward the first recess through the first through hole, so as to facilitate injection of the first insulating material into the first recess. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] FIG1 is a schematic diagram showing a partial structure of a battery module in some embodiments.

[0072] FIG2 is a schematic diagram showing a partial structure of a battery module from another perspective in some embodiments.

[0073] FIG3 is a schematic diagram showing an exploded view of a portion of the structure of the battery module in the embodiment of FIG1 .

[0074] FIG4 is a schematic diagram showing the structure of a battery cell in some embodiments.

[0075] FIG5 shows an exploded schematic diagram of a battery cell in some embodiments.

[0076] FIG6 shows an exploded schematic diagram of a battery cell and a heat conducting member in some embodiments.

[0077] FIG7 is a schematic diagram showing the structure of a battery cell and a heat conducting member in some embodiments.

[0078] FIG8 is a schematic diagram showing a partial structure of a battery module in some embodiments.

[0079] FIG9 is a schematic structural diagram of a third member and a conductive component in some embodiments.

[0080] 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.

[0081] FIG11 shows an enlarged schematic diagram of point B in the embodiment of FIG10 .

[0082] FIG12 is a schematic cross-sectional view of a portion of the battery module in the embodiment of FIG2 along the III-III direction.

[0083] 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.

[0084] FIG14 shows an enlarged schematic diagram of point C in the embodiment of FIG13 .

[0085] FIG15 is a schematic cross-sectional view of a portion of the battery module in the embodiment of FIG2 along the VV direction.

[0086] FIG16 is a schematic structural diagram showing a partial structure of a battery pack from another perspective.

[0087] FIG17 is a schematic cross-sectional view of a partial structure of the battery pack in an inverted position in the embodiment of FIG16 along the VI-VI direction.

[0088] FIG18 is a schematic structural diagram showing a partial structure of the battery module as viewed along a third direction Z, wherein the first insulating material is not provided in the first recess.

[0089] FIG19 is a schematic diagram showing a partial structure of a battery module in another embodiment of FIG17 .

[0090] FIG20 shows an enlarged schematic diagram of point E in the embodiment of FIG19 .

[0091] FIG21 is a schematic structural diagram of the first component in some embodiments.

[0092] FIG22 shows a schematic structural diagram of the first component from another perspective in some embodiments.

[0093] FIG23 is a schematic structural diagram of the second component in some embodiments.

[0094] FIG24 shows a schematic structural diagram of the second component from another perspective in some embodiments.

[0095] 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.

[0096] FIG26 shows a schematic structural diagram of a battery pack in some embodiments.

[0097] FIG27 is a schematic structural diagram of a battery pack from another perspective in some embodiments.

[0098] FIG. 28 shows an exploded schematic diagram of a battery pack in some embodiments.

[0099] FIG29 is a schematic diagram showing a portion of a battery pack in some embodiments.

[0100] FIG30 is a schematic structural diagram showing a portion of a battery pack from another perspective in some embodiments.

[0101] FIG31 is a schematic structural diagram showing a portion of a housing in some embodiments.

[0102] FIG32 is a schematic flow chart showing the manufacturing direction of a battery module in some embodiments.

[0103] FIG33 shows a schematic structural diagram of electrical equipment in some embodiments.

[0104] Description of the main component symbols: Battery module 100 First fastener 100a Second thermal conductive adhesive 100b Insulator 100c Battery cell assembly 20 Battery cell 21 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 Connection area 212a Electrode assembly 213 First component 30 First recess 301 First opening 301a First space301b Second opening 302 Third opening 303 Fourth opening 304 Fifth opening 305 Sixth opening 306 Seventh opening 307 Third gap 30a Base 31 Connecting protrusion 311 Second through hole 312 Third through hole 313 Fourth through hole 314 First side wall 32 First limiting portion 33 First connecting wall 331 Second connecting wall 332 Third connecting wall 333 Fourth connecting wall 334 Second limiting portion 34 Third limiting portion 35 Fourth limiting portion 36 Fifth limiting portion 37 Sixth limiting portion 38 Second component 40 First heat dissipation channel 40a Protrusion 40b First through hole 401 Front wall 41 Second opening 411 Rear wall 42 Fourth opening421 Top wall 43 Protrusion 44 Bottom wall 45 Left wall 46 Right wall 47 First insulating member 50 Thermal conductive member 60 First portion 61 Second portion 62 First gap 62a Third portion 63 Second gap 63a Third component 70 First hole 71 Second hole 72 First conductive plate 73 Second conductive plate 74 Third hole 75 Fourth hole 76 Second insulating member 90 Fourth insulating member 91 Fifth insulating member 92 Conductive component 110 First connecting portion 110a Wire 110b First segment 1101 First section 1101a Second section 1101b Second segment 1102 Second connecting portion 110c First electrical connector120 First conductive portion 120a First insulating portion 120b Second electrical connector 130 Second conductive portion 130a Second insulating portion 130b First sealing member 140 Battery pack 200 Second circuit board 210 First fixing member 220 First elastic member 230 Second elastic member 240 Housing 10 First housing opening 10a Second housing opening 10b Housing opening 101 Housing front wall 11 First opening 111 First fixing hole 112 Housing rear wall 12 Third opening 121 Housing left wall 13 First heat sink 131 Housing right wall 14 Second heat sink 141 Housing bottom wall 15 Top cover 16 Third heat sink 161 Bracket 17 First direction X Second direction Y Third directionZ

[0105] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0106] 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.

[0107] 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.

[0108] 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 between the two components that is approximately perpendicular or equal. 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.

[0109] 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.

[0110] The term "parallel" is used to describe the ideal state between two components. In actual production or use, there may be a state of approximate parallelism between the two components. For example, combined with numerical descriptions, parallel can refer to the angle between two straight lines being in the range of 180°±10°, parallel can also refer to the dihedral angle between two planes being in the range of 180°±10°, and parallel can also refer to the angle between a straight line and a plane being in the range of 180°±10°. The two components described as "parallel" 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 its overall extension direction is a straight line or a plane.

[0111] Unless otherwise defined, the term "plurality" herein, when used to describe the number of components, specifically means that the components are two or more.

[0112] 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.

[0113] Referring to Figures 1 to 3 and 17 to 22, one embodiment of the present application provides a battery module 100 comprising a cell assembly 20, a first member 30, a second member 40, and a first insulating member 50. The cell assembly 20 includes a plurality of cells 21. Each cell 21 includes a cell housing 211 and an electrode terminal 212. The electrode terminal 212 extends from the cell housing 211. The cell housing 211 and the first member 30 are arranged along a first direction X. The first member 30 has a first recess 301, with a portion of each electrode terminal 212 disposed within the first recess 301. At least a portion of the first insulating member 50 is disposed within the gap between the electrode terminal 212 and the first member 30. The second member 40 has a first through-hole 401. The second member 40 and the first member 30 are arranged along the first direction X. The first recess 301 includes a first opening 301a facing the second member 40. Along the first direction X, the projection of the first through-hole 401 overlaps the projection of the first opening 301a.

[0114] The present application arranges a portion of each electrode terminal 212 in the first recess 301 , and by arranging the first insulating member 50 in the gap between the electrode terminal 212 and the first component 30 , strengthens the sealing and insulation protection of the electrode terminal 212 , thereby strengthening the sealing and insulation protection of the battery module 100 .

[0115] In some embodiments, the first insulating member 50 is configured to be formed by curing a first insulating material.

[0116] 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.

[0117] In some embodiments, the first through hole 401 is configured to provide the first insulating material to the first recess 301 through the first through hole 401 to form the first insulating member 50 .

[0118] 3, 4 and 8, each battery cell 21 includes an electrode assembly 213 disposed within a battery cell housing 211. Electrode terminals 212 are connected to and extended from the battery cell housing 211. Adjacent electrode terminals 212 are connected to form a connection region 212a.

[0119] 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.

[0120] 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.

[0121] In some embodiments, the sealing portion 211b 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. The second direction is perpendicular to the first direction.

[0122] 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.

[0123] Please note that in some embodiments, the second component 40 is a heat sink, which includes a first heat dissipation channel 40 a . The first heat dissipation channel 40 a is connected to the outside, which is beneficial for dissipating heat from the battery cell assembly 20 .

[0124] In some embodiments, the second component 40 includes a front wall 41 and a rear wall 42 arranged along the third direction Z. Along the third direction Z, the first heat dissipation channel 40a passes through the front wall 41 and the rear wall 42. The first direction, the second direction and the third direction are perpendicular to each other.

[0125] In some embodiments, the battery module 100 can utilize a cooling medium, which passes through the first heat dissipation channel 40a to remove heat. Optionally, the cooling medium includes air and liquid. Optionally, the liquid can be liquid from the external environment, such as rain.

[0126] 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 speed is faster when the device is moving, rapid heat dissipation of the battery module 100 can be achieved.

[0127] It is understood that, depending on the movement direction of the battery module 100, the side where the front wall 41 is located can serve as either an air inlet or an air outlet. When the side where the front wall 41 is located serves as an air inlet, the side where the rear wall 42 is located serves as an air outlet. When the front wall 41 is located as an air outlet, the rear wall 42 serves as an air inlet.

[0128] Referring to FIG. 2 , in some embodiments, a cell assembly 20 includes a first group of cells 201 and a second group of cells 202 . The first group of cells 201 includes at least two cells 21 stacked along a third direction Z, and the second group of cells 202 includes at least two cells 21 stacked along a third direction Z. The first group of cells 201 and the second group of cells 202 are arranged along a second direction Y. The second member 40 is disposed between the first group of cells 201 and the second group of cells 202 to dissipate heat from the first group of cells 201 and the second group of cells 202 .

[0129] Referring to Figures 16 to 23, in some embodiments, the second component 40 includes a top wall 43 and a protrusion 44, and the top wall 43 connects the front wall 41 and the rear wall 42. The protrusion 44 extends from the top wall 43 along the first direction X. The first through hole 401 penetrates the protrusion 44 along the third direction Z. Along the first direction X, a first space 301b is present between the top wall 43 and the first opening 301a. The first through hole 401 is connected to the first recess 301 through the first space 301b. When the first insulating material is injected, an external device extends into the first through hole 401. The first space 301b can provide space for the external device, facilitating the external device's insertion and reducing the risk of the external device damaging the components in the first recess 301. The first insulating material can enter the first recess 301 through the first space 301b.

[0130] Please refer to Figures 16 to 23. In some embodiments, the protrusion 44 is located outside the first recess 301, reducing the occupation of the first recess 301 by the protrusion 44, reducing the length of the external device extending into the first recess 301, and further reducing the risk of external equipment damaging the components in the first recess 301.

[0131] In some embodiments, the first through hole 401 is located outside the first recess 301 , so that an external device can pass through the first through hole 401 and enter the first recess 301 .

[0132] In some embodiments, the battery module 100 includes a waterproof breathable valve (not shown), which seals the first through hole 401 . The waterproof breathable valve can prevent external impurities from entering the first recess 301 and can be used to discharge gas from the battery module 100 .

[0133] In some embodiments, the first through hole 401 is separated from the first insulating member 50 to facilitate the first fastener 100a to connect to the first through hole 401. In some embodiments, the first insulating member 50 is disposed in the first through hole 401 to seal the first through hole 401 and prevent dust and other impurities from entering the first recess 301 through the first through hole 401.

[0134] In some embodiments, in the third direction Z, the length of the second component 40 is greater than the length of the stacked multiple battery cells 21, and both ends of the second component 40 extend out of the battery cell assembly 20, which is conducive to setting the protrusion 44 so that the protrusion 44 is located outside the first recess 301.

[0135] In some embodiments, the protrusion 44 extends beyond the main body 211 a along the second direction Y and along the first direction X, thereby reducing the effect of the protrusion 44 on the heat dissipation of the main body 211 a and facilitating heat dissipation.

[0136] In some embodiments, the second component 40 includes two protrusions 44 , which are spaced apart on the top wall 43 along the third direction Z. The first insulating material can be injected simultaneously through the first through holes 401 provided on the two protrusions 44 , which helps to improve the glue injection efficiency.

[0137] In some embodiments, along the third direction Z, the projection of the first through hole 401 is separated from the projection of the first sealing portion 2115 , which can reduce the risk of external devices extending through the first through hole 401 and damaging the first sealing portion 2115 .

[0138] In some embodiments, along the second direction Y, the protrusion 44 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 44 is separated from the first sealing portion 2115 of the first group of battery cells 201. This separation of the projection of the protrusion 44 from the first sealing portion 2115 of the second group of battery cells 202 along the third direction Z reduces the risk of external devices penetrating through the first through-hole 401 and damaging the first sealing portion 2115.

[0139] In some embodiments, the first through hole 401 and the first heat dissipation channel 40 a are separated, reducing interference between the first through hole 401 and the first heat dissipation channel 40 a and facilitating external devices to extend into the first recess 301 through the first through hole 401 .

[0140] In some embodiments, the second member 40 includes a bottom wall 45 , and the bottom wall 45 and the top wall 43 are arranged along the first direction X.

[0141] Referring to Figures 3 to 7, 29, and 30, in some embodiments, the battery module 100 includes a heat conducting member 60. The heat conducting member 60 includes a first portion 61 and a second portion 62. 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 61 connects the main body front wall 2105 or the main body rear wall 2106, and the second portion 62 connects the first portion 61. The second component 40 includes a left wall 46 and a right wall 47 arranged along the second direction Y. Along the second direction Y, the second portion 62 is disposed between the main body right wall 2102 and the left wall 46. Heat from the main body front wall 2105 or the main body rear wall 2106 is conducted to the left wall 46 through the second portion 62 and dissipated through the first heat dissipation channel 40a.

[0142] In some embodiments, the second portion 62 contacts and connects to the left wall 46 , which is beneficial for heat dissipation.

[0143] In some embodiments, the battery module 100 includes a first thermally conductive adhesive (not shown), and the second portion 62 is connected to the left wall 46 via the first thermally conductive adhesive, which further facilitates heat dissipation.

[0144] In some embodiments, the heat conducting member 60 includes a first portion 61 and two second portions 62 , wherein the two second portions 62 connect two sides of the first portion 61 along the second direction Y. The first portion 61 connects to the main body front wall 2105 or the main body rear wall 2106 . Along the second direction Y, one of the second portions 62 is located on one side of the main body left wall 2101 , and the other second portion 62 is located between the main body right wall 2102 and the left wall 46 , further facilitating heat dissipation.

[0145] In some embodiments, the heat conducting member 60 includes a third portion 63 connected to the first portion 61 . The second portion 62 and the body bottom wall 2103 are arranged along the first direction X. Heat from the body front wall 2105 or the body rear wall 2106 is dissipated through the third portion 63 .

[0146] In some embodiments, heat conducting members 60 are provided on both sides of each main body portion 211a along the third direction Z. The first portion 61 of the two heat conducting members 60 is connected to the main body front wall 2105, and the first portion 61 of the other heat conducting member 60 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.

[0147] In some embodiments, the battery module 100 includes a second thermally conductive adhesive 100 b , and the first portion 61 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.

[0148] In some embodiments, the battery module 100 includes a third thermally conductive adhesive (not shown), and the third portion 63 is connected to the bottom wall 2103 of the main body through the third thermally conductive adhesive, which is beneficial to heat dissipation.

[0149] In some embodiments, the battery module 100 includes an insulator 100 c , which is disposed on the third portion 63 and the bottom wall 2103 of the main body.

[0150] In some embodiments, when observed along the second direction Y, in the third direction Z, there is a first gap 62a (as shown in Figure 30) between the two second parts 62 of the heat conducting member 60 located on both sides of the same main body 211a, which reduces the possibility of stacking the two second parts 62 and improves the flatness of the second part 62, which is beneficial for connecting to the left wall 46, ensuring the heat dissipation area, facilitating assembly, and facilitating production.

[0151] In some embodiments, when observed along the first direction X, in the third direction Z, there is a second gap 63a (as shown in Figure 29) between the two third parts 63 of the heat conducting member 60 located on both sides of the same main body 211a, which reduces the possibility of stacking the two third parts 63, improves the flatness of the third part 63, ensures the heat dissipation area, facilitates assembly, and is beneficial to production.

[0152] Referring to Figures 6 and 7 , in some embodiments, when the battery cell 21 is not connected to the thermally conductive member 60, the second portion 62 of the thermally conductive member 60 is configured to face away from the first portion 61, such that the second portion 62 is tilted relative to the first portion 61, and the angle formed between the second portion 62 and the first portion 61 forms an obtuse angle α. When the battery cell 21 is placed on the thermally conductive member 60, the battery cell 21 can slide along the inclined surface of the second portion 62 and connect to the first portion 61. This reduces the risk of the second portion 62 scratching the battery cell housing 211 and facilitates installation of the battery cell 21.

[0153] Please refer to Figures 3, 8, 9, 18 and 20. In some embodiments, the battery module 100 further includes a third component 70. Along the first direction X, the protrusion 44 and the third component 70 are arranged, and the protrusion 44 is spaced apart from the third component 70 to reduce the impact of external equipment extending into the first through hole 401 on the third component 70.

[0154] In some embodiments, the electrode terminal 212 passes through the third member 70 and connects to a side of the third member 70 facing away from the cell casing 211 . The first insulating member 50 covers at least a portion of the third member 70 to insulate and protect the third member 70 .

[0155] In some embodiments, the electrode terminal 212 , the third component 70 and the first component 30 are bonded together by the first insulating member 50 , thereby improving the connection stability of the electrode terminal 212 , the third component 70 and the first component 30 and sealing and insulating the electrode terminal 212 , the third component 70 and the first component 30 .

[0156] In some embodiments, the first insulating member 50 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 strengthening protection of the first sealing portion 2115 and improving heat dissipation of the cell housing 211 .

[0157] In some embodiments, the third member 70 is provided with a first hole 71 and a second hole 72 arranged along the third direction Z. The first hole 71 and the second hole 72 extend along the second direction Y. The electrode terminal 212 of an adjacent battery cell 21 passes through the first hole 71, and the electrode terminal 212 of another battery cell 21 passes through the second hole 72. The two electrode terminals are stacked and connected to each other, forming a connection region 212a. The connection region 212a is connected to the third member 70, and the connection region 212a is located between the third member 70 and the first member 30.

[0158] In some embodiments, the third member 70 includes a plurality of first conductive sheets 73. The first conductive sheets 73 are connected to the third member 70. The electrode terminal 212 of an adjacent battery cell 21 passes through the first hole 71, and the electrode terminal 212 of another battery cell 21 passes through the second hole 72. The two electrode terminals are stacked and welded to the first conductive sheets 73. Welding methods include laser welding, ultrasonic welding, etc. In other embodiments, the connection region 212a and the first conductive sheet 73 can also be connected by other methods such as conductive adhesive.

[0159] In one embodiment, the first conductive sheet 73 is configured to collect electrical signal information of the battery cell, where the electrical signal information includes but is not limited to voltage, current, temperature, and resistance.

[0160] In one embodiment, the third member 70 is further provided with a second conductive sheet 74. The second conductive sheet 74 connects the electrode terminals 212 of the first group of battery cells 201 and the electrode terminals 212 of the second group of battery cells 202, and is used to transfer current from the first group of battery cells 201 to the second group of battery cells 202, thereby achieving a series connection or a parallel connection between the first group of battery cells 201 and the second group of battery cells 202.

[0161] In some embodiments, the third member 70 further includes a third hole 75. When viewed in a direction X' opposite to the first direction X, the third hole 75 is located between the first hole 71 and the second hole 72 along the third direction Z. The third hole 75 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.

[0162] In some embodiments, the third member 70 further comprises a fourth hole 76 disposed in the middle of the third member 70 along the second direction Y. The battery module 100 further comprises a conductive assembly 110. The conductive assembly 110 comprises a first connecting portion 110a, a conductive wire 110b, and a second connecting portion 110c. The first connecting portion 110a is connected to the third member 70 via a plurality of fourth holes 76, and the conductive wire 110b connects the first connecting portion 110a and the second connecting portion 110c.

[0163] In some embodiments, the conductive component 110 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 110 is configured to transmit electrical signal information of the battery cell 21 as an example.

[0164] Optionally, the third component 70 includes a first circuit board, and the first circuit board includes a flexible printed circuit (FPC). Optionally, the first circuit board includes a printed circuit board (PCB).

[0165] Referring to Figures 1 to 3 and 8, in some embodiments, the battery module 100 further includes a first electrical connector 120 and a second electrical connector 130. The first electrical connector 120 and the second electrical connector 130 are connected to external devices to enable input or output of electrical energy. Optionally, the first electrical connector 120 and the second electrical connector 130 are welded to the third member 70. Optionally, the first electrical connector 120 comprises a copper busbar, and the second electrical connector 130 comprises a copper busbar.

[0166] In some embodiments, the first electrical connector 120 includes a first conductive portion 120a and a first insulating portion 120b. The first conductive portion 120a extends from both ends of the first insulating portion 120b. One end of the first conductive portion 120a is connected to the first conductive sheet 73, and the other end is connected to an external device.

[0167] In some embodiments, along the third direction Z, the projection of the first conductive sheet 73, the projection of the electrode terminal 212, and the projection of the first conductive portion 120a 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 73 and the welding connection of the first conductive portion 120a to the first conductive sheet 73.

[0168] In some embodiments, the second electrical connector 130 includes a second conductive portion 130a and a second insulating portion 130b. The second conductive portion 130a extends from both ends of the second insulating portion 130b. One end of the second conductive portion 130a is connected to another first conductive sheet 73, and the other end is connected to an external device.

[0169] In some embodiments, along the third direction Z, the projection of another first conductive sheet 73, the projection of the electrode terminal 212, and the projection of the second conductive portion 130a 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 another first conductive sheet 73 and the welding connection of the second conductive portion 130a to another first conductive sheet 73.

[0170] Referring to Figures 1 to 3, 21, and 23, in some embodiments, the outer surface of the first member 30 is insulating. Alternatively, the first member 30 is made of an insulating material. Alternatively, the first 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.

[0171] In some embodiments, the first component 30 includes a base 31, which is disposed on a side of the third component 70 facing away from the cell casing 211. A connecting protrusion 311 is disposed on a side of the base 31 facing the third component 70. The connecting protrusion 311 connects to the third component 70, thereby defining a third gap 30a between the third component 70 and the base 31. The connecting region 212a is located within the third gap 30a, facilitating the flow of the first insulating material into the third gap 30a, covering the connecting region 212a, insulating and protecting the connecting region 212a, and facilitating bonding of the third component 70 to the base 31.

[0172] In some embodiments, the first member 30 includes a first sidewall 32 , which is formed by extending from the edge of the base 31 . The first sidewall 32 and the base 31 form a first recess 301 , which is disposed toward the battery cell assembly 20 in a direction opposite to the first direction X. Optionally, the first member 30 includes four first sidewalls 32 , which enclose the base 31 to form the first recess 301 .

[0173] In some embodiments, the four first side walls 32 form a first opening 301 a at one end away from the base 31 .

[0174] In some embodiments, along the second direction Y, the projection of the third member 70 is located within the projection of the first recess 301 , which can insulate and protect the third member 70 .

[0175] In some embodiments, along the second direction Y, the projection of the electrode terminal 212 is located within the projection of the first side wall 32, which can insulate and protect the electrode terminal 212. Alternatively, the projection of the first sealing portion 2115 is located within the projection of the first side wall 32, which can further insulate and protect the electrode terminal 212.

[0176] Referring to Figures 1 to 3, 10 to 12 and 20, in some embodiments, the battery module 100 includes a first limiting portion 33, which is connected to a side of the base 31 away from the third component 70, and the first limiting portion 33 includes a second opening 302.

[0177] In some embodiments, the first member 30 includes a second through hole 312 that penetrates the base 31 along the first direction X. Before the first insulating material is poured along the first direction X, the second through hole 312 communicates with the second opening 302 . The conductive component 110 is led out from the second through hole 312 and the second opening 302 .

[0178] In some embodiments, the first connection portion 110 a passes through the second through hole 312 to connect to the third component 70 , and the wire 110 b is led out from the second opening 302 and the second through hole 312 .

[0179] In some embodiments, the battery module 100 includes a second insulating member 90, at least a portion of which is disposed in the gap between the conductive component 110 and the first limiting portion 33. The second insulating member 90 is configured to be formed by disposing a second insulating material in the gap between the conductive component 110 and the first limiting portion 33 and then curing the second insulating material.

[0180] In some embodiments, the second insulating member 90 covers the connection between the first connecting portion 110a and the third member 70, insulating and protecting the connection between the first connecting portion 110a and the third member 70. The second insulating member 90 covers the conductive component 110 located within the first limiting portion 33. Optionally, the second insulating member 90 covers the conductive wire 110b and the first connecting portion 110a located within the first limiting portion 33.

[0181] In some embodiments, before the second insulating material is poured, the second through hole 312 communicates with the second opening 302. After the second insulating material is poured, the second insulating member 90 fills the second opening 302 of the first limiting portion 33, so that the second through hole 312 no longer communicates with the second opening 302.

[0182] In some embodiments, the battery module 100 includes a second stopper 34. Along the first direction X, the projection of the second through-hole 312 lies within the projection of the second stopper 34. The second stopper 34 is connected to the side of the base 31 facing the third member 70. The second stopper 34 is connected to the third member 70 to prevent the second insulating material from entering the first recess 301. The second stopper 34 includes a third opening 303. The conductive component 110 is led out through the third opening 303, the second through-hole 312, and the second opening 302.

[0183] Before pouring the second insulating material, the second through hole 312 is connected to the third opening 303. After pouring the second insulating material, the second insulating member 90 fills the third opening 303 of the first limiting portion 33, so that the second through hole 312 is no longer connected to the third opening 303.

[0184] Before pouring the first insulating material, the second insulating material is poured first so that the third opening 303 no longer communicates with the second through-hole 312, thereby reducing the amount of first insulating material that enters the first limiting portion 33 and the second limiting portion 34. At least a portion of the second insulating member 90 is disposed in the gap between the first limiting portion 33 and the conductive component 110, and in the gap between the second limiting portion 34 and the conductive component 110. Optionally, the second insulating member 90 covers the connection between the first connecting portion 110a located in the second limiting portion 34 and the third member 70, insulating and protecting the connection between the first connecting portion 110a and the third member 70 to reduce the risk of short circuits. The second insulating member 90 covers the first connecting portion 110a and the conductive wire 110b, and the second insulating member 90 is disposed in the gap between adjacent conductive wires 110b.

[0185] In some embodiments, the battery module 100 includes a first stopper 33 and a second stopper 34. Before the second insulating material is poured, the third opening 303, the second through hole 312, and the second opening 302 are interconnected. The second insulating member 90 is disposed between the third opening 303, the second through hole 312, and the second opening 302, so that the third opening 303, the second through hole 312, and the second opening 302 are no longer connected.

[0186] In some embodiments, the battery module 100 includes a second stopper 34. Before the second insulating material is poured, the third opening 303 and the second through-hole 312 are interconnected. The second insulating member 90 is disposed between the third opening 303, the second through-hole 312, and the second opening 302, thereby disabling the connection between the third opening 303 and the second through-hole 312. The second stopper 34 prevents the second insulating material from overflowing beyond the second stopper 34.

[0187] In some embodiments, the projection of the first limiting portion 33 and the projection of the second limiting portion 34 overlap along the first direction X. The first limiting portion 33 and the second limiting portion 34 can be any structure that surrounds the first connecting portion 110a and the conductive wire 110b located within the second opening 302 and the third opening 303, 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 is described using the example of the first limiting portion 33 being a quadrangular prism.

[0188] In some embodiments, the first position-limiting portion 33 includes a first connecting wall 331, a second connecting wall 332, a third connecting wall 333, and a fourth connecting wall 334. The first connecting wall 331 and the second connecting wall 332 are arranged along the third direction Z, and the third connecting wall 333 and the fourth connecting wall 334 are arranged along the second direction Y. The first connecting wall 331 connects the third connecting wall 333 and the fourth connecting wall 334, and the second connecting wall 332 connects the third connecting wall 333 and the fourth connecting wall 334, forming the first position-limiting portion 33. The first connecting wall 331, the second connecting wall 332, the third connecting wall 333, and the fourth connecting wall 334 connect the base 31. When viewed in a direction X' opposite to the first direction X, the first connecting wall 331, the second connecting wall 332, the third connecting wall 333, and the fourth connecting wall 334 surround the first connecting portion 110a and the conductive wire 110b located within the second opening 302.

[0189] In some embodiments, the first limiting portion 33 and the second limiting portion 34 are integrally formed with the base portion 31, for example, by injection molding.

[0190] In some embodiments, the first limiting portion 33 and the second limiting portion 34 are adhesively connected to the base 31 .

[0191] In some embodiments, the battery module 100 includes a first seal 140, which is disposed between the third member 70 and the second stopper 34. The first seal 140 connects the third member 70 and the second stopper 34, further isolating the first recess 301 from the third opening 303 and further reducing the ingress of the second insulating material into the first recess 301. Optionally, the first seal 140 includes a compressible elastic member, such as a foam or a silicone pad.

[0192] In some embodiments, when injecting the second insulating material, the conductive component 110 is first straightened to make the conductive component 110 substantially perpendicular to the third member 70, and then the second insulating material is injected into the first limiting portion 33 and the second limiting portion 34. The second insulating material is fixed to form a second insulating member.

[0193] In some embodiments, the second insulating material includes at least one of polyurethane glue, epoxy glue, and silicone glue. Alternatively, the second insulating material includes quick-drying glue.

[0194] In some embodiments, the wire 110b includes a first segment 1101 disposed on the first limiting portion 33 and a second segment 1102 extending from the first limiting portion 33. The first segment 1101 includes a first section 1101a and a second section 1101b. The first section 1101a connects the first connecting portion 110a and the second section 1101b.

[0195] The battery module 100 also includes a third insulating member. The third insulating member is formed by placing a third insulating material on the first and second limiting portions 33 and 34 and then curing it. The third insulating member is partially located on the second limiting portion 34, partially located on the first limiting portion 33, and partially located on the second through-hole 312. The viscosity of the third insulating material is greater than that of the second insulating material, which helps to strengthen the waterproofing of the conductive assembly 110. After the third insulating material cures to form the third insulating member, the second insulating material is poured into the first limiting portion 33 and cured to form the second insulating material.

[0196] Referring to Figures 1 to 3, 13, and 14, in some embodiments, the battery module 100 includes a third stopper 35 connected to a side of the base 31 facing away from the third member 70. The third stopper 35 includes a fourth opening 304. The first member 30 includes a third through hole 313 extending through the base 31 along the first direction X. The first electrical connector 120 extends through the third through hole 313 and the fourth opening 304.

[0197] Optionally, along the third direction Z, the projection of the first conductive portion 120a is located within the projection of the third limiting portion 35. The third limiting portion 35 insulates and protects the first conductive portion 120a. The battery module 100 includes a fourth insulating member 91. The fourth insulating member 91 is formed by applying a fourth insulating material to the third limiting portion 35 and then curing it. At least a portion of the fourth insulating member 91 is disposed in the gap between the first electrical connector 120 and the third limiting portion 35. The fourth insulating member 91 covers the first conductive portion 120a to further insulate and protect it.

[0198] Optionally, along the third direction Z, the projection of the first conductive portion 120a, the projection of the portion of the electrode terminal 212 extending from the third through-hole 313, and the projection of the portion of the first conductive sheet 73 extending from the third through-hole 313 are located within the projection of the third limiting portion 35. The third limiting portion 35 further insulates and protects the first conductive portion 120a, the electrode terminal 212, and the first conductive sheet 73. The fourth insulating member 91 covers the first conductive portion 120a, the portion of the electrode terminal 212 extending from the third through-hole 313, and the portion of the first conductive sheet 73 extending from the third through-hole 313 to provide further insulation and protection.

[0199] Optionally, the projection of the first insulating portion 120b is located within the projection of the third limiting portion 35. The third limiting portion 35 insulates and protects the first conductive portion 120a, the portion of the electrode terminal 212 extending from the third through-hole 313, the portion of the first conductive sheet 73 extending from the third through-hole 313, and the first insulating portion 120b located within the third limiting portion 35. The fourth insulating member 91 covers the first conductive portion 120a, the portion of the electrode terminal 212 extending from the third through-hole 313, the portion of the first conductive sheet 73 extending from the third through-hole 313, and the first insulating portion 120b located within the third limiting portion 35 to further provide insulation and protection.

[0200] In some embodiments, before the fourth insulating material is poured, the third through hole 313 communicates with the fourth opening 304. After the fourth insulating material is poured, the fourth insulating member 91 fills the fourth opening 304 of the third limiting portion 35, so that the third through hole 313 no longer communicates with the fourth opening 304.

[0201] In some embodiments, the battery module 100 includes a fourth stopper 36. Along the first direction X, the projection of the third through hole 313 is located within the projection of the fourth stopper 36. The fourth stopper 36 is connected to the side of the base 31 facing the third member 70 to prevent the fourth insulating material from entering the first recess 301. The fourth stopper 36 includes a fifth opening 305. The first electrical connector 120 extends through the fifth opening 305, the third through hole 313, and the fourth opening 304.

[0202] Before pouring the fourth insulating material, the third through hole 313 is connected to the fourth opening 304. After pouring the fourth insulating material, the fourth insulating member 91 fills the fifth opening 305 of the fourth limiting portion 36, so that the third through hole 313 is no longer connected to the fifth opening 305.

[0203] Before pouring the first insulating material, the fourth insulating material is poured first, so that the fifth opening 305 is no longer connected to the third through-hole 313, thereby reducing the first insulating material from entering the fourth limiting portion 36 and the third limiting portion 35. The fourth insulating member 91 is disposed in the fourth limiting portion 36 through the third through-hole 313. The fourth insulating member 91 covers the first conductive portion 120a, electrode terminal 212, and first conductive sheet 73 within the fourth limiting portion 36, further insulating and protecting them and reducing the risk of short circuits.

[0204] In some embodiments, the battery module 100 includes a third stopper 35 and a fourth stopper 36. Before the fourth insulating material is poured, the fourth opening 304, the third through hole 313, and the fifth opening 305 are interconnected. The fourth insulating member 91 is disposed at the fourth opening 304, the third through hole 313, and the fifth opening 305, so that the fourth opening 304, the third through hole 313, and the fifth opening 305 are no longer connected.

[0205] In some embodiments, along the first direction X, the projection of the third limiting portion 35 and the projection of the fourth limiting portion 36 overlap.

[0206] In some embodiments, the structures of the third limiting portion 35 and the fourth limiting portion 36 are substantially the same as those of the first limiting portion 33 and the second limiting portion 34 , and are not described in detail herein.

[0207] In some embodiments, the third limiting portion 35 and the fourth limiting portion 36 are integrally formed with the base portion 31, for example, by injection molding.

[0208] In some embodiments, the third limiting portion 35 and the fourth limiting portion 36 are adhesively connected to the base 31 .

[0209] In some embodiments, the fourth insulating material comprises one of polyurethane glue, epoxy glue, and silicone glue. Alternatively, the fourth insulating material comprises quick-drying glue.

[0210] Referring to Figures 1 to 3 and 15 , in some embodiments, the battery module 100 includes a fifth stopper 37 connected to a side of the base 31 facing away from the third member 70. The fifth stopper 37 includes a sixth opening 306. The base 31 has a fourth through hole 314 extending through the base 31 along the first direction X. The second electrical connector 130 extends through the fourth through hole 314 and the sixth opening 306.

[0211] Optionally, along the third direction Z, the projection of the second conductive portion 130a is located within the projection of the fifth limiting portion 37. The fifth limiting portion 37 insulates and protects the second conductive portion 130a. The battery module 100 includes a fifth insulating member 92. The fifth insulating member 92 is formed by applying a fifth insulating material to the fifth limiting portion 37 and then curing it. At least a portion of the fifth insulating member 92 is disposed in the gap between the second electrical connector 130 and the fifth limiting portion 37. The fifth insulating member 92 covers the second conductive portion 130a to further insulate and protect it.

[0212] Optionally, along the third direction Z, the projection of the second conductive portion 130a, the projection of the portion of the electrode terminal 212 extending from the fourth through-hole 314, and the projection of the portion of the first conductive sheet 73 extending from the fourth through-hole 314 are located within the projection of the fifth limiting portion 37. The fifth limiting portion 37 further insulates and protects the second conductive portion 130a, the electrode terminal 212, and the first conductive sheet 73. The fifth insulating member 92 covers the second conductive portion 130a, the portion of the electrode terminal 212 extending from the fourth through-hole 314, and the portion of the first conductive sheet 73 extending from the fourth through-hole 314 to provide further insulation and protection.

[0213] Optionally, the projection of the second insulating portion 130b is located within the projection of the fifth limiting portion 37. The fifth limiting portion 37 insulates and protects the second conductive portion 130a, the portion of the electrode terminal 212 extending from the fourth through-hole 314, the portion of the first conductive sheet 73 extending from the fourth through-hole 314, and the second insulating portion 130b located within the fifth limiting portion 37. The fifth insulating member 92 covers the second conductive portion 130a, the portion of the electrode terminal 212 extending from the fourth through-hole 314, the portion of the first conductive sheet 73 extending from the fourth through-hole 314, and the second insulating portion 130b located within the fifth limiting portion 37 to further provide insulation and protection.

[0214] In some embodiments, before the fifth insulating material is poured, the fourth through hole 314 communicates with the sixth opening 306 . After the fifth insulating material is poured, the fifth insulating member 92 fills the sixth opening 306 , so that the fourth through hole 314 no longer communicates with the sixth opening 306 .

[0215] In some embodiments, the battery module 100 includes a sixth stopper 38. Along the first direction X, the projection of the fourth through hole 314 is located within the projection of the sixth stopper 38. The sixth stopper 38 is connected to the side of the base 31 facing the third member 70 to reduce the intrusion of the fourth insulating material into the first recess 301. The sixth stopper 38 includes a seventh opening 307. The second electrical connector 130 extends through the seventh opening 307, the fourth through hole 314, and the sixth opening 306.

[0216] Before the fifth insulating material is poured, the fourth through hole 314 is connected to the seventh opening 307. After the fifth insulating material is poured, the fifth insulating member 92 fills the seventh opening 307, so that the fourth through hole 314 is no longer connected to the seventh opening 307.

[0217] Before pouring the first insulating material, the fifth insulating material is poured first, so that the seventh opening 307 is no longer connected to the fourth through hole 314 , thereby reducing the first insulating material from entering the sixth limiting portion 38 and the fifth limiting portion 37 .

[0218] In some embodiments, the fifth insulating member 92 is disposed in the sixth limiting portion 38 through the fourth through hole 314. The fifth insulating member 92 covers the second conductive portion 130a, the electrode terminal 212 and the first conductive sheet 73 located in the sixth limiting portion 38 to further insulate and protect and reduce the risk of short circuit.

[0219] In some embodiments, the battery module 100 includes a fifth stopper 37 and a sixth stopper 38. Before the fourth insulating material is poured, the sixth opening 306, the fourth through hole 314, and the seventh opening 307 are interconnected. The fifth insulating member 92 is disposed at the sixth opening 306, the fourth through hole 314, and the seventh opening 307, thereby discontinuing the communication between the sixth opening 306, the fourth through hole 314, and the seventh opening 307.

[0220] In some embodiments, along the first direction X, the projection of the fifth limiting portion 37 and the projection of the sixth limiting portion 38 overlap.

[0221] In some embodiments, the structures of the fifth limiting portion 37 and the sixth limiting portion 38 are substantially the same as those of the first limiting portion 33 and the second limiting portion 34 , and are not described in detail herein.

[0222] In some embodiments, the fifth limiting portion 37 and the sixth limiting portion 38 are integrally formed with the base portion 31, for example, by injection molding.

[0223] In some embodiments, the fifth limiting portion 37 and the sixth limiting portion 38 are adhesively connected to the base 31 .

[0224] In some embodiments, the fifth insulating material comprises one of polyurethane glue, epoxy glue, and silicone glue. Alternatively, the fifth insulating material comprises quick-drying glue.

[0225] Referring to Figures 1 to 25 , another embodiment of the present application provides a battery module 100 comprising a cell assembly 20, a first component 30, a second component 40, and a first insulating member 50. The cell assembly 20 includes a plurality of cells 21. Each cell 21 includes a cell housing 211 and an electrode terminal 212. The electrode terminal 212 extends from the cell housing 211. The cell housing 211 and the first component 30 are arranged along a first direction X. The first component 30 has a first recess 301, with a portion of each electrode terminal 212 disposed within the first recess 301. At least a portion of the first insulating member 50 is disposed within the gap between the electrode terminal 212 and the first component 30. The second component 40 has a first through-hole 401. The second component 40 and the first component 30 are arranged along the first direction X. The second component 40 includes a top wall 43 and a protrusion 44. The protrusion 44 extends from the top wall 43, and the first through-hole 401 extends through the protrusion 44. Along the first direction X, a first space 301 b exists between the top wall 43 and the first opening 301 a . When viewed along the third direction Z, at least a portion of the first through hole 401 is located in the first space 301 b . The third direction is perpendicular to the first direction.

[0226] In some embodiments, when viewed along a third direction Z, all of the first through holes 401 are located in the first space 301 b , and the third direction is perpendicular to the first direction.

[0227] In some embodiments, along the third direction Z, the projection of the first through hole 401 and the projection of the first space 301b overlap.

[0228] In some embodiments, in the first direction X, a projection of the first through hole 401 along the third direction Z is located between a projection of the top wall 43 along the third direction Z and a projection of the first recess 301 along the third direction Z.

[0229] In this application, a portion of each electrode terminal 212 is positioned within the first recess 301. By positioning the first insulating member 50 in the gap between the electrode terminal 212 and the first member 30, the sealing and insulation protection of the electrode terminal 212 are enhanced. Furthermore, by providing the first through-hole 401 in the convex portion 44 and positioning the first insulating member 50 through the first through-hole 401 toward the first recess 301, the need for additional channel structures within the battery module 100 is reduced, thereby reducing structural constraints on the battery module 100.

[0230] It is understandable that other structures of the battery module 100 of this embodiment are the same as those of the battery module 100 of the aforementioned embodiment, and are not described in detail here.

[0231] Referring to Figures 1 to 25 , another embodiment of the present application provides a battery module 100 comprising a cell assembly 20, a first member 30, a third member 70, a second stopper 34, a conductive assembly 110, and a second insulating member 90. The cell assembly 20 includes a plurality of cells 21. Each cell 21 includes a cell housing 211 and an electrode terminal 212, which extends from the cell housing 211. The third member 70 includes a first hole 71 and a second hole 72, through which the electrode terminal 212 passes. The cell housing 211 and the third member 70 are arranged along a first direction. The outer surface of the first member 30 is coated with insulating material. The first member includes a base 31, which is located on the side of the third member 70 facing away from the cell housing 211. The first member 30 includes a second through-hole 312 extending through the base 31 along the first direction X. The second stopper 34 is located on the side of the base 31 facing the cell housing 211 and includes a third opening 303. The conductive component 110 is connected to the battery cell assembly 20 and is partially disposed in the second limiting portion 34. The conductive component 110 is led out from the third opening and the second through hole 312. The second insulating member 90 is at least partially disposed in the gap between the second limiting portion 34 and the conductive component 110.

[0232] The second insulating member 90 is formed by placing a second insulating material in the gap between the conductive component 110 and the second limiting portion 34 and then curing the second insulating material. The second limiting portion 34 can prevent the second insulating material from overflowing outside the second limiting portion 34.

[0233] In the present application, the insulation and fixation of the conductive component 110 are strengthened by the second insulating member 90 , which is beneficial to further improve the safety performance of the battery module 100 .

[0234] It is understandable that other structures of the battery module 100 of this embodiment are the same as those of the battery module 100 of the aforementioned embodiment, and are not described in detail here.

[0235] Referring to FIG. 32 , the present application further provides a method for manufacturing the battery module 100 , comprising the following steps:

[0236] Step 1: Connect the battery cell assembly 20, the second component 40 and the first component 30;

[0237] Step 2: Turn the battery module upside down, inject a first insulating material into the first recess 301 from the first through hole 401 , and solidify the first insulating material to form a first insulating member 50 .

[0238] Referring to FIG. 17 , inverting the battery module 100 includes placing the battery module 100 in a direction opposite to the first direction X.

[0239] Referring to Figures 1 to 3, in some embodiments, step 1 specifically includes installing the second component 40 between the first group of battery cells 201 and the second group of battery cells 202, orienting the first opening 301a of the first component 30 toward the battery cell assembly 20, and positioning a portion of the electrode terminal 212 of the battery cell assembly 20 in the first recess 301.

[0240] Referring to Figures 1 to 3, 11, and 14 to 15, in some embodiments, after step 1, the process further includes: sealing the first component 30. Specifically, the process includes injecting a second insulating material into the second limiting portion 34 and the first limiting portion 33, causing the second insulating material to solidify to form a second insulating member 90, extending the first electrical connector 120 from the fourth opening 304, injecting a fourth insulating material into the fourth limiting portion 36 and the third limiting portion 35, causing the fourth insulating material to solidify to form a fourth insulating member 91, extending the second electrical connector from the sixth opening 306, injecting a fifth insulating material into the sixth limiting portion 38 and the fifth limiting portion 37, causing the fifth insulating material to solidify to form a fifth insulating member 92.

[0241] Please also refer to Figure 16. In some embodiments, step 2 specifically includes inverting the battery module 100, extending the external device into the first recess 301 from the first through hole 401, and injecting a first insulating material into the first recess 301. After the first insulating material is cured, it forms a first insulating member 50.

[0242] 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.

[0243] In some embodiments, the battery cell assembly 20 and the top cover 16 are arranged along the first direction X. Along the first direction X, the second member 40 does not extend beyond the housing 10 .

[0244] Referring to FIG. 28 , in some embodiments, a battery pack 200 includes a housing 10. 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 a second direction Y, and the housing front wall 11 and the housing rear wall 12 are arranged along a third direction Z. 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. A top cover 16 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 receiving space. Optionally, the battery cell assembly 20, the second component 40, the first component 30, and the first insulating member 50 are all accommodated in the receiving space.

[0245] In some embodiments, along the first direction X, the second member 40 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 .

[0246] In some embodiments, the battery pack 200 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 .

[0247] 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.

[0248] 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.

[0249] 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 .

[0250] Referring to Figures 26 to 28 , in some embodiments, the housing 10 includes a housing opening 101, which includes a first housing opening 10a and a second housing opening 10b. The first housing opening 10a extends through the housing front wall 11, and the second housing opening 10b extends through the housing rear wall 12. A first heat dissipation channel 40a connects the first housing opening 10a and the second housing opening 10b, and the first heat dissipation channel 40a communicates with the outside through the first housing opening 10a and the second housing opening 10b.

[0251] It is understood that, depending on the movement direction of the battery pack 200, the first housing opening 10a can function as either an air inlet or an air outlet. When the first housing opening 10a functions as an air inlet, the second housing opening 10b functions as an air outlet. When the first housing opening 10a functions as an air outlet, the second housing opening 10b functions as an air inlet.

[0252] 28 and 31 , in some embodiments, the battery pack 200 includes a second circuit board 210 connected to the top cover 16 . The second connecting portion 110 c is connected to the second circuit board 210 and can transmit the collected information to the second circuit board 210 .

[0253] Optionally, the second circuit board 210 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.

[0254] Optionally, the second circuit board 210 includes a flexible printed circuit (FPC). Optionally, the second circuit board 210 includes a printed circuit board (PCB), and a plurality of wires (not shown) are provided on the second circuit board 210.

[0255] Please refer to Figures 26 to 28. In some embodiments, the front wall 41 is connected to the front wall 11 of the housing, and the rear wall 42 is connected to the rear wall 12 of the housing.

[0256] In some embodiments, the battery pack 200 further includes a first fixing member 220. The housing front wall 11 is provided with a first opening 111, and the front wall 41 is provided with a second opening 411. The first fixing member 220 passes through the first opening 111 and connects to the second opening 411, thereby fixing the front wall 41 to the housing front wall 11. Optionally, the first fixing member 220 includes a screw.

[0257] 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 opening 121, and the rear wall 42 is provided with a fourth opening 421. The second fixing member passes through the third opening 121 and connects to the fourth opening 421, thereby fixing the rear wall 42 to the housing rear wall 12. Optionally, the second fixing member includes a screw.

[0258] In some embodiments, the battery module 100 further includes a second sealing member (not shown). The second sealing member is disposed between the housing front wall 11 and the housing front wall 41. The second sealing member connects the housing front wall 11 and the housing front wall 41 to enhance the sealing between the housing front wall 11 and the housing front wall 41. Optionally, the second sealing member is bonded to the housing front wall 11 and the housing front wall 41. Optionally, the second sealing member comprises foam. Optionally, the second sealing member comprises sealant.

[0259] In some embodiments, the battery module 100 further includes a third sealant (not shown). The third sealant is disposed between the rear wall 12 and the rear wall 42 of the housing. The third sealant connects the rear wall 12 and the rear wall 42 of the housing, thereby enhancing the seal between the rear wall 12 and the rear wall 42 of the housing. Optionally, the third sealant is bonded to the rear wall 12 and the rear wall 42 of the housing. Optionally, the third sealant includes foam. Optionally, the third sealant includes sealant.

[0260] Referring to Figures 23 to 28 , in some embodiments, the housing front wall 11 is provided with a first fixing hole 112 that extends through the housing front wall 11. The first fixing hole 112 communicates with the first through-hole 401. After the first insulating member 50 is positioned in the first recess 301, the first through-hole 401 can be used to discharge gas from the battery module 100, achieving pressure balance between the inside and outside of the battery module 100 and improving the safety of the battery module 100.

[0261] In some embodiments, the battery pack 200 further includes a first fastener 100a, which is disposed in the first fixing hole 112 and the first through hole 401. The first fastener 100a can seal the first through hole 401, thereby reducing the entry of dust and other impurities into the first recess 301 through the first through hole 401. The first fastener 100a also serves to connect the second member 40 to the housing front wall 11. Optionally, the first fastener 100a includes a screw.

[0262] 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 through hole 401 to continue to close the first through hole 401 to reduce dust and other impurities from entering the battery module 100.

[0263] In some embodiments, the first through hole 401 is separated from the first insulating member 50 , which facilitates the first fastener 100 a to connect to the first through hole 401 .

[0264] In some embodiments, the battery pack 200 includes a sealant, which is disposed in the first through hole 401 to reduce the entry of impurities such as dust into the first recess 301 through the first through hole 401. Optionally, the sealant includes sealant.

[0265] 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 recess 301 and can be used to discharge gas from the battery module 100 .

[0266] In some embodiments, the second component 40 includes a protrusion 40 b disposed within the first heat dissipation channel 40 a and extending along the third direction Z. Along the third direction Z, one end surface of the protrusion 40 b is coplanar with the front wall 41, and the other end surface is coplanar with the rear wall 42. A second opening 411 is disposed on one end surface, and a fourth opening 421 is disposed on the other end surface. The second opening 411 and the fourth opening 421 are arranged along the third direction Z.

[0267] In some embodiments, protrusion 40b is provided on a side surface of left wall 46 facing right wall 47. In some embodiments, protrusion 40b is provided on a side surface of right wall 47 facing left wall 46. In some embodiments, protrusion 40b is provided on the surface of left wall 46 and right wall 47 facing each other.

[0268] Referring to Figures 6, 7, and 29-30, in some embodiments, the heat conducting member 60 includes a first portion 61 and two second portions 62, with the two second portions 62 connecting opposite sides of the first portion 61 along a second direction Y. The first portion 61 is connected to the main body front wall 2105 or the main body rear wall 2106. When the battery module 100 is positioned within the receiving space, along the second direction Y, one of the second portions 62 is positioned between the main body left wall 2101 and the outer shell left wall 13, while the other second portion 62 is positioned between the main body right wall 2102 and the left wall 46. Heat from the main body front wall 2105 or the main body rear wall 2106 is transferred to the outer shell left wall 13 and the left wall 46 via the second portions 62, further facilitating heat dissipation.

[0269] In some embodiments, the second portion 62 is connected to the left wall 13 of the housing, and another second portion is connected to the left wall 46, which is beneficial to heat dissipation.

[0270] In some embodiments, the battery module 100 includes a first thermally conductive adhesive (not shown), wherein one second portion 62 is connected to the left wall 13 of the housing through the first thermally conductive adhesive, and the other second portion 62 is connected to the left wall 46 through the first thermally conductive adhesive, which is beneficial to heat dissipation.

[0271] In some embodiments, the heat conducting member 60 includes a third portion 63 connected to the first portion 61. The second portion 62 is disposed between the housing bottom wall 15 and the body bottom wall 2103. The third portion 63 is connected to the housing bottom wall 15. Heat from the body front wall 2105 or the body rear wall 2106 is conducted to the housing bottom wall 15 through the third portion 63, further facilitating heat dissipation.

[0272] In some embodiments, the third portion 63 is connected to the bottom wall 15 of the housing via a first thermally conductive adhesive, which is beneficial for heat dissipation.

[0273] In some embodiments, along the third direction Z, heat conducting members 60 are provided on both sides of each main body 211a. The two second portions 62 located on the same side of the two heat conducting members 60 are located between the left wall 13 of the housing and the left wall 2101 of the main body, and the two second portions 62 are connected to the left wall 13 of the housing. The two second portions 62 located on the same side of the two heat conducting members 60 are located between the right wall 2102 of the main body and the left wall 46, and the two second portions 62 are connected to the left wall 46. The two third portions 63 located on the same side of the two heat conducting members 60 are located between the bottom wall 15 of the housing and the bottom wall 2103 of the main body, and the two third portions 63 are connected to the bottom wall 15 of the housing. The second portion 62 is connected to the left wall 13 and the left wall 46 of the housing, and the third portion 63 is connected to the bottom wall 15 of the housing. Both the second portion 62 and the third portion 63 can conduct heat from the main body 211a, further improving heat dissipation efficiency.

[0274] Referring to Figures 6 and 7 , in some embodiments, when the battery cell 21 is not connected to the thermally conductive member 60, the second portion 62 of the thermally conductive member 60 is configured to face away from the first portion 61, such that the second portion 62 is tilted relative to the first portion 61, and the angle formed between the second portion 62 and the first portion 61 forms an obtuse angle α. When the battery cell 21 is placed on the thermally conductive member 60, the battery cell 21 can slide along the inclined surface of the second portion 62 and connect to the first portion 61. This reduces the risk of the second portion 62 scratching the battery cell housing 211 and facilitates installation of the battery cell 21.

[0275] In some embodiments, the two second portions 62 of the thermal conductor 60 are configured to be arranged in a direction away from the first portion 61, so that the two second portions 62 are flared, and the battery cell 21 slides along the inclined surfaces of the two second portions 62 and connects to the first portion 61. When the battery cell assembly 20, the second component 40, and the thermal conductor 60 are installed in the housing 10, the left wall 13 and the left wall 46 of the housing can squeeze the inclined second portion 62, so that the second portion 62 is close to the first portion 61 and is roughly parallel to the surface of the left wall 13 of the housing. Optionally, after assembly is completed, the second portion 62 is perpendicular to the first portion 61. 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 thermal conductor 60, thereby reducing the space occupied by the thermal conductor 60 and improving space utilization.

[0276] In some embodiments, before assembly, the first angle A of the second portion 62 folded relative to the first portion 61 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°.

[0277] 3 , 28 , and 29 , in some embodiments, the battery module 100 includes a first elastic member 230. The first elastic member 230 is disposed between the housing front wall 11 and the first portion 61 connected to the first battery cell 21 a . The first elastic member 230 provides expansion space for the battery cell 21 and reduces the amount of heat dissipated from the first portion 61 connected to the first battery cell 21 a through the housing front wall 11 . This reduces the temperature difference between the multiple battery cells 21 and improves the performance of the battery pack 200.

[0278] In some embodiments, the first elastic member 230 is disposed between the housing rear wall 12 and the first portion 61 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 61 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.

[0279] 3 , in some embodiments, the battery module 100 includes a second elastic member 240, which is disposed between adjacent first portions 61 to provide expansion space for the battery cells 21. Optionally, the second elastic member 240 includes foam.

[0280] Please refer to Figure 28. In some embodiments, after the battery module 100 is assembled, the battery module 100 is installed in the housing, the conductive component 110, the first electrical connector 120 and the second electrical connector 130 are connected to the second circuit board 210, and then the bracket 17 and the top cover 16 are installed.

[0281] 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.

[0282] 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 battery cell assembly, wherein the battery cell assembly includes a plurality of battery cells, each of the battery cells includes a battery cell housing and an electrode terminal, and the electrode terminal is led out from the battery cell housing; A first member, the battery cell assembly and the first member are arranged along a first direction, the first member has a first recess, and a portion of each of the electrode terminals is disposed in the first recess; a first insulating member, wherein at least a portion of the first insulating member is disposed in a gap between the electrode terminal and the first member; A second component is provided with a first through hole, and the second component and the first component are arranged along a first direction; The first recess includes a first opening facing the second member, and along the first direction, a projection of the first through hole overlaps with a projection of the first opening.

2. The battery module according to claim 1, characterized in that: The second component includes a top wall and a convex portion, the first through hole passes through the convex portion, and the convex portion extends from the top wall along the first direction; Along the first direction, a first space exists between the top wall and the first opening.

3. The battery module according to claim 2, characterized in that: The convex portion is located outside the first concave portion.

4. The battery module according to any one of claims 1 to 3, characterized in that: The first through hole is located outside the first recess.

5. The battery module according to any one of claims 1 to 4, characterized in that: The first through hole is separated from the first insulating member.

6. The battery module according to any one of claims 2 to 5, 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.

7. The battery module according to claim 6, characterized in that: The second component and the plurality of battery cells are arranged in a second direction, along the first direction, the protrusion exceeds the main body, and the second direction is perpendicular to the first direction.

8. The battery module according to claim 6, characterized in that: Along the third direction, a projection of the first through hole is separated from a projection of the first sealing portion, and the first direction is perpendicular to the third direction.

9. The battery module according to claim 6, characterized in that: The battery cell assembly comprises a first group of battery cells and a second group of battery cells, the first group of battery cells and the second group of battery cells are arranged along a second direction, and the second component is located between the first group of battery cells and the second group of battery cells; The first group of battery cells includes at least two battery cells stacked along a third direction, the second group of battery cells includes at least two battery cells stacked along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other; Along the second direction, at least part of the protrusion is located at the first sealing part of the first group of battery cells. and between the first sealing parts of the second group of battery cells.

10. The battery module according to any one of claims 1 to 9, characterized in that: The battery module further includes a third member, the electrode terminal passes through the third member and is connected to a side of the third member away from the battery cell housing; The first insulating member covers at least a portion of the third component.

11. The battery module according to claim 10, characterized in that: The electrode terminal, the third member and the first member are bonded and connected via the first insulating member.

12. The battery module according to claim 10, characterized in that: The battery module also includes a first limiting portion; The first member includes a base, the first limiting portion is arranged on a side of the base away from the third member, and the first limiting portion includes a second opening; The first member further comprises a second through hole, and along the first direction, the second through hole penetrates the base; The battery module further includes a conductive component connected to the third component, and the conductive component is led out from the second through hole and the second opening.

13. The battery module according to claim 12, characterized in that: The battery module further includes a second insulating member, at least a portion of which is disposed in a gap between the conductive component and the first limiting portion.

14. The battery module according to claim 13, characterized in that: The battery module further includes a second limiting portion, which is disposed on a side of the base portion facing the third member; The second limiting portion includes a third opening, and the conductive component is led out from the third opening, the second through hole and the second opening; The second insulating member is at least partially disposed in a gap between the second limiting portion and the conductive component.

15. The battery module according to claim 14, characterized in that: The battery module includes a first sealing member, and along the first direction, the first sealing member is located between the third component and the second limiting portion.

16. The battery module according to any one of claims 1 to 15, characterized in that: The first member has an outer surface with insulating properties.

17. The battery module according to any one of claims 1 to 16, characterized in that: The first component includes a base and four first side walls, and the base and the four first side walls enclose and form the first recess.

18. The battery module according to claim 17, characterized in that: The first opening is formed at one end of the four first side walls away from the base.

19. The battery module according to any one of claims 1 to 18, characterized in that: The first insulating member is configured to be formed by curing a first insulating material.

20. The battery module according to any one of claims 1 to 19, characterized in that: The first through hole is configured to provide a first insulating material to the first recess through the first through hole to form a first insulating member.

21. The battery module according to any one of claims 1 to 20, characterized in that: The second component is a heat sink, and the heat sink includes a first heat dissipation channel, and the first heat dissipation channel is connected to the outside.

22. The battery module according to claim 21, characterized in that: The first through hole and the first heat dissipation channel are separated.

23. The battery module according to any one of claims 1 to 22, characterized in that: Along a direction opposite to the first direction, the first recess is arranged toward the battery cell assembly.

24. A battery module, characterized in that: include: A battery cell assembly, wherein the battery cell assembly includes a plurality of battery cells, each of the battery cells includes a battery cell housing and an electrode terminal, and the electrode terminal is led out from the battery cell housing; A first member, the battery cell assembly and the first member are arranged along a first direction, the first member has a first recess, and a portion of each of the electrode terminals is disposed in the first recess; a first insulating member, wherein at least a portion of the first insulating member is disposed in a gap between the electrode terminal and the first member; A second component is provided with a first through hole, and the second component and the first component are arranged along a first direction; The second component includes a top wall and a convex portion, the first through hole passes through the convex portion, and the convex portion extends from the top wall along the first direction; The first recess comprises a first opening facing the second member, and along the first direction, a first space exists between the top wall and the first opening; When viewed along a third direction, at least a portion of the first through hole is located in the first space, and the third direction is perpendicular to the first direction.

25. The battery module according to claim 24, characterized in that: The convex portion is located outside the first concave portion.

26. The battery module according to any one of claims 24 to 25, characterized in that: The first through hole is located outside the first recess.

27. The battery module according to any one of claims 24 to 26, characterized in that: The first through hole is separated from the first insulating member.

28. The battery module according to any one of claims 24 to 27, 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.

29. The battery module according to claim 28, characterized in that: The second component and the plurality of battery cells are arranged in a second direction, along the first direction, the protrusion exceeds the main body, and the second direction is perpendicular to the first direction.

30. The battery module according to claim 28, wherein: Along the third direction, a projection of the first through hole is separated from a projection of the first sealing portion.

31. The battery module according to any one of claims 24 to 30, characterized in that: The battery cell assembly comprises a first group of battery cells and a second group of battery cells, the first group of battery cells and the second group of battery cells are arranged along a second direction, and the second component is located between the first group of battery cells and the second group of battery cells; The first group of battery cells includes at least two battery cells stacked along a third direction, the second group of battery cells includes at least two battery cells stacked along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other; Along the second direction, at least a portion of the protrusion is located between the first sealing portion of the first group of battery cells and the first sealing portion of the second group of battery cells.

32. The battery module according to any one of claims 24 to 31, characterized in that: The battery module further includes a third member, the electrode terminal passes through the third member and is connected to a side of the third member away from the battery cell housing; The first insulating member covers at least a portion of the third component.

33. The battery module according to claim 32, characterized in that: The electrode terminal, the third member and the first member are bonded and connected via the first insulating member.

34. The battery module according to claim 32, wherein: The battery module also includes a first limiting portion; The first member includes a base, the first limiting portion is arranged on a side of the base away from the third member, and the first limiting portion includes a second opening; The first member further comprises a second through hole, and along the first direction, the second through hole penetrates the base; The battery module further includes a conductive component connected to the third component, and the conductive component is led out from the second through hole and the second opening.

35. The battery module according to claim 34, characterized in that: The battery module further includes a second insulating member, at least a portion of which is disposed in a gap between the conductive component and the first limiting portion.

36. The battery module according to claim 35, characterized in that: The battery module further includes a second limiting portion, which is disposed on a side of the base portion facing the third member; The second limiting portion includes a third opening, and the conductive component is led out from the third opening, the second through hole and the first limiting portion; The second insulating member is at least partially disposed in a gap between the second limiting portion and the conductive component.

37. The battery module according to claim 36, characterized in that: The battery module includes a first sealing member, and along the first direction, the first sealing member is located between the third component and the second limiting portion.

38. The battery module according to any one of claims 24 to 37, characterized in that: The first member has an outer surface with insulating properties.

39. The battery module according to any one of claims 24 to 38, characterized in that: The first component includes a base and four first side walls, and the base and the four first side walls enclose and form the first recess.

40. The battery module according to claim 39, wherein: The first opening is formed at one end of the four first side walls away from the base.

41. The battery module according to any one of claims 24 to 40, characterized in that: The first insulating member is configured to be formed by curing a first insulating material.

42. The battery module according to any one of claims 24 to 41, characterized in that: The first through hole is configured to provide a first insulating material to the first recess through the first through hole to form a first insulating member.

43. The battery module according to any one of claims 24 to 42, characterized in that: The second component is a heat sink, and the heat sink includes a first heat dissipation channel, and the first heat dissipation channel is connected to the outside.

44. The battery module according to claim 43, characterized in that: The first through hole and the first heat dissipation channel are separated.

45. The battery module according to any one of claims 24 to 44, characterized in that: Along a direction opposite to the first direction, the first recess is arranged toward the battery cell assembly.

46. ​​A battery pack, comprising a battery module as described in any one of claims 1 to 23 or a battery module as described in any one of claims 24 to 45, a shell and a top cover, wherein the shell and the top cover form a receiving space, and the battery module is located in the receiving space.

47. The battery pack according to claim 46, characterized in that The battery pack further includes a second circuit board electrically connected to the battery cell assembly.

48. The battery pack according to claim 47, characterized in that The battery cell assembly and the top cover are arranged along the first direction; Along the first direction, the second component does not extend beyond the housing.

49. The battery pack according to any one of claims 46 to 48, characterized in that: The battery pack further includes a first fastener, the housing is provided with a first fixing hole, and the first fastener is provided at the first fixing hole and the first through hole.

50. The battery pack according to any one of claims 46 to 48, characterized in that: The battery pack includes a sealing member, and the sealing member is disposed in the first through hole.

51. An electrical device, characterized in that: A battery pack comprising a battery as claimed in any one of claims 46 to 50.

52. A method for manufacturing a battery module according to any one of claims 1 to 23 or a battery module according to any one of claims 24 to 45, characterized in that: The following steps are involved: connecting the battery cell assembly, the second component and the first component; The battery module is turned upside down, and a first insulating material is injected from the first through hole into the first recess, and the first insulating material is solidified to form a first insulating member.

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