Battery module and manufacturing method thereof, battery pack and electric equipment

Abstract

The invention discloses a battery module and a manufacturing method thereof, a battery pack and electric equipment. The battery module comprises a battery cell assembly, a first component, a first insulating part and a second component, the battery cell assembly comprises a plurality of battery cells, each battery cell comprises a battery cell shell and an electrode terminal, and the electrode terminals are led out from the battery cell shells. The battery core assembly and the first component are arranged in the first direction, the first component is provided with a first concave part, and a part of each electrode terminal is arranged in the first concave part. At least a portion of the first insulator is disposed in a gap between the electrode terminal and the first member. 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 includes a first opening toward the second member, and a projection of the first through hole and a projection of the first opening overlap in a first direction. The first insulating part is arranged in the gap between the electrode terminal and the first component, so that the sealing and insulating protection of the electrode terminal is enhanced, and the sealing and insulating protection of the battery module is further enhanced.

Description

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. Summary of the invention

[0003] 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.

[0004] An embodiment of the present application provides a battery module, including a cell assembly, a first component, a first insulating member, and a second component. The cell assembly includes a plurality of cells, each cell including a cell housing and an electrode terminal, and the electrode terminal is led out from the cell housing. The cell assembly and the first component are arranged along a first direction, the first component has a first recess, and a portion of each electrode terminal is arranged in the first recess. At least a portion of the first insulating member is arranged in the 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 in the first direction. The first recess includes a first opening toward 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 arranges a portion of each electrode terminal in the first recess, and by arranging the first insulating member in the gap between the electrode terminal and the first component, the sealing and insulation protection of the electrode terminal is strengthened, thereby strengthening the sealing and insulation protection of the battery module.

[0005] Optionally, in some embodiments of the present application, the second member includes a top wall and a convex portion, and the first through hole passes through the convex portion. Along the first direction, the convex portion extends from the top wall. Along the first direction, there is a first space between the top wall and the first opening. When the first insulating material is injected, an external device extends from the first through hole, and the first space can provide space for the external device, facilitating the external device to extend therein, thereby reducing the risk of the external device damaging the components in the first recess.

[0006] Optionally, in some embodiments of the present application, the protrusion is located outside the first recess, which reduces the occupation of the first recess by the protrusion, reduces the length of the external device extending into the first recess, and further reduces the risk of external devices damaging components in the first recess.

[0007] Optionally, in some embodiments of the present application, the first through hole is located outside the first recess, so as to facilitate an external device to pass through the first through hole into the first recess.

[0008] Optionally, in some embodiments of the present application, the first through hole is separated from the first insulating member to facilitate the first fastener to connect to the first through hole.

[0009] 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 the entry of impurities such as dust into the first recess through the first through hole.

[0010] 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.

[0011] Optionally, in some embodiments of the present application, each battery cell includes an electrode assembly, the battery cell housing includes a main body and a sealing portion, and the electrode assembly is disposed in the main body. The sealing portion includes a first sealing portion, the electrode terminal is connected to the electrode assembly and is led out from the first sealing portion, and each first sealing portion is at least partially located in the first recess. The first insulating member covers at least a portion of each first sealing portion to strengthen the sealing and insulation protection of the first sealing portion.

[0012] 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 exceeds 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.

[0013] 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.

[0014] 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 the 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 part 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 from the first through hole to damage the first sealing portion.

[0015] Optionally, in some embodiments of the present application, the battery module further comprises 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 member to seal and insulate the third member.

[0016] 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.

[0017] Optionally, in some embodiments of the present application, the battery module further includes a first limiting portion. The first member includes a base, the first limiting portion is connected to a side of the base away from the third member, and the first limiting portion includes a second opening. The first member includes a second through hole, and the second through hole passes through the base. The battery module further includes a conductive component, the conductive component is connected to the third member, and the conductive component is led out from the second opening and the second through hole.

[0018] Optionally, in some embodiments of the present application, the battery module further includes a second insulating member, and at least a portion of the second insulating member is disposed in a gap between the conductive component and the first limiting portion to seal and insulate a portion of the conductive component.

[0019] Optionally, in some embodiments of the present application, before the second insulating member is disposed in the gap, the second through hole is connected to the second opening, and after the second insulating member is disposed in the gap, the second through hole and the second opening are isolated from each other by the second insulating member.

[0020] Optionally, in some embodiments of the present application, a second limiting portion is further included, the second limiting portion is connected to the side of the base portion facing the third member, and the second limiting portion includes a third opening. 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 the gap between the second limiting portion and the conductive component to seal and insulate the conductive component located at the second limiting portion.

[0021] 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 after the third insulating material is 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 is conducive to strengthening 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.

[0022] 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.

[0023] Optionally, in some embodiments of the present application, the outer surface of the first component is insulating to reduce the risk of short circuit.

[0024] 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.

[0025] 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.

[0026] Optionally, in some embodiments of the present application, the first insulating member is configured to be formed by solidifying the first insulating material.

[0027] 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 beneficial for setting the first insulating member.

[0028] 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.

[0029] Optionally, in some embodiments of the present application, the first through hole and the first heat dissipation channel are separated, so as to reduce interference between the first through hole and the first heat dissipation channel and facilitate external equipment to extend into the first recess through the first through hole.

[0030] 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.

[0031] Another embodiment of the present application provides a battery module, including a cell assembly, a first component, a first insulating member, and a second component. The cell assembly includes a plurality of cells, each cell including a cell housing and an electrode terminal, and the electrode terminal is led out from the cell housing. The cell assembly and the first component are arranged along a first direction, the first component has a first recess, and a portion of each electrode terminal is 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 includes a top wall and a convex portion, the convex portion extends from the top wall, and the first through hole passes through the convex portion. Along the first direction, the convex portion extends from the top wall. The first recess includes a first opening toward 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 in the first space, and the third direction is perpendicular to the first direction.

[0032] The present application arranges part of each electrode terminal in the first recess, and arranges the first insulating member in the gap between the electrode terminal and the first member to strengthen the sealing and insulation protection of the battery module. In addition, by arranging the first through hole in the convex part and arranging the first insulating member toward the first recess through the first through hole, it is possible to reduce the need to arrange other channel structures in the battery module and reduce restrictions on the battery module structure.

[0033] 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.

[0034] 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.

[0035] Optionally, in some embodiments of the present application, the protrusion is located outside the first recess, which reduces the occupation of the first recess by the protrusion, reduces the length of the external device extending into the first recess, and further reduces the risk of external devices damaging components in the first recess.

[0036] Optionally, in some embodiments of the present application, the first through hole is located outside the first recess, so as to facilitate an external device to pass through the first through hole into the first recess.

[0037] Optionally, in some embodiments of the present application, the first through hole is separated from the first insulating member to facilitate the first fastener to connect to the first through hole.

[0038] 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 the entry of impurities such as dust into the first recess through the first through hole.

[0039] 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.

[0040] Optionally, in some embodiments of the present application, each battery cell includes an electrode assembly, the battery cell housing includes a main body and a sealing portion, and the electrode assembly is disposed in the main body. The sealing portion includes a first sealing portion, the electrode terminal is connected to the electrode assembly and is led out from the first sealing portion, and each first sealing portion is at least partially located in the first recess. The first insulating member covers at least a portion of each first sealing portion to strengthen the sealing and insulation protection of the first sealing portion.

[0041] 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 exceeds 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.

[0042] 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.

[0043] 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 the 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 part 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 from the first through hole to damage the first seal.

[0044] Optionally, in some embodiments of the present application, the battery module further comprises 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 member to seal and insulate the third member.

[0045] 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.

[0046] Optionally, in some embodiments of the present application, the battery module further includes a first limiting portion. The first member includes a base, the first limiting portion is connected to a side of the base away from the third member, and the first limiting portion includes a second opening. The first member includes a second through hole, and the second through hole passes through the base. The battery module further includes a conductive component, the conductive component is connected to the third member, and the conductive component is led out from the second opening and the second through hole.

[0047] Optionally, in some embodiments of the present application, the battery module further includes a second insulating member, and at least a portion of the second insulating member is disposed in a gap between the conductive component and the first limiting portion to seal and insulate a portion of the conductive component.

[0048] Optionally, in some embodiments of the present application, before the second insulating member is disposed in the gap, the second through hole is connected to the second opening, and after the second insulating member is disposed in the gap, the second through hole and the second opening are isolated from each other by the second insulating member.

[0049] Optionally, in some embodiments of the present application, a second limiting portion is further included, the second limiting portion is connected to a side of the base portion facing the third member, and the second limiting portion includes a third opening. 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 to seal and insulate the conductive component located in the second limiting portion.

[0050] 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 after the third insulating material is 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 is conducive to strengthening 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.

[0051] 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.

[0052] Optionally, in some embodiments of the present application, the outer surface of the first component is insulating to reduce the risk of short circuit.

[0053] 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.

[0054] 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.

[0055] Optionally, in some embodiments of the present application, the first insulating member is configured to be formed by solidifying the first insulating material.

[0056] 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 beneficial for setting the first insulating member.

[0057] 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.

[0058] Optionally, in some embodiments of the present application, the first through hole and the first heat dissipation channel are separated, so as to reduce interference between the first through hole and the first heat dissipation channel and facilitate external equipment to extend into the first recess through the first through hole.

[0059] 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.

[0060] Another embodiment of the present application provides a battery module, including a cell assembly, a first component, a third component, a second limiting portion, a conductive component and a second insulating member. The cell assembly includes a plurality of cells, each cell including a cell housing and an electrode terminal, and the electrode terminal is led out of the cell housing. The third component includes a first hole and a second hole, and the electrode terminal passes through the first hole and the second hole, and the cell housing and the third component are arranged along a first direction. An insulating material is provided on the outer surface of the first component, and the first component includes a base, which is arranged on a side of the third component away from the cell housing, and along the first direction, the first component includes a second through hole that passes through the base. The second limiting portion is arranged on a side of the base facing the cell housing, and the second limiting portion includes a third opening. The conductive component connects the cell assembly, and a portion of the conductive component is arranged on the second limiting portion, and the conductive component is led out from the third opening and the second through hole. The second insulating member is at least partially arranged in the gap between the second limiting portion and the conductive component.

[0061] The second insulating member is configured to be formed by setting the second insulating material in the gap between the conductive component and the second limiting portion and then solidifying. The second limiting portion can limit the second insulating material from overflowing the second limiting portion. Strengthening the insulation and fixation of the conductive component 110 by the second insulating member 90 is conducive to further improving the safety performance of the battery module 100.

[0062] 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.

[0063] 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.

[0064] 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 exceed the housing.

[0065] Optionally, in some embodiments of the present application, the battery pack also includes a first fastener, the outer shell is provided with a first fixing hole, the first fastener is provided at the first fixing hole and the first through hole, so as to reduce the entry of impurities such as dust 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.

[0066] Optionally, in some embodiments of the present application, the battery pack includes a seal, which is disposed in the first through hole to reduce the entry of impurities such as dust into the first recess through the first through hole.

[0067] An embodiment of the present application further provides an electrical device, comprising the battery pack in any of the above embodiments.

[0068] An embodiment of the present application further provides a method for manufacturing a battery module in any of the above embodiments, comprising the following steps: connecting a battery cell assembly, a second component and a 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.

[0069] The present application arranges a first insulating member 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

[0070] Figure 1 A partial structural schematic diagram of a battery module in some embodiments is shown.

[0071] Figure 2 A partial structural schematic diagram of a battery module from another perspective in some embodiments is shown.

[0072] Figure 3 Shows Figure 1 A schematic diagram of the partial structure of the battery module in the embodiment.

[0073] Figure 4 Schematic diagrams of the structures of battery cells in some embodiments are shown.

[0074] Figure 5 Schematic diagrams of the exploded view of the battery cells in some embodiments are shown.

[0075] Figure 6 Schematic diagrams of the exploded view of the battery cells and the heat conducting components in some embodiments are shown.

[0076] Figure 7 Schematic diagrams of the structures of battery cells and heat conducting components in some embodiments are shown.

[0077] Figure 8 A partial structural schematic diagram of a battery module in some embodiments is shown.

[0078] Fig. 9 Schematic diagrams of the structures of the third member and the conductive assembly in some embodiments are shown.

[0079] Fig.10 Shows Figure 1 A schematic cross-sectional view of a portion of the structure of the battery module in the embodiment along the II-II direction.

[0080] Fig.11 Shows Fig.10 An enlarged schematic diagram of point B in the embodiment.

[0081] Fig.12 Shows Figure 2 A schematic cross-sectional view of a portion of the structure of the battery module in the embodiment along the III-III direction.

[0082] Fig.13 Shows Figure 2 A schematic cross-sectional view of a partial structure of a battery module in an embodiment along direction IV-IV.

[0083] Fig.14 Shows Fig.13 An enlarged schematic diagram of point C in the embodiment.

[0084] Fig.15 Shows Figure 2 A schematic cross-sectional view of a portion of the structure of the battery module in the embodiment along the VV direction.

[0085] Fig.16 A structural schematic diagram showing a partial structure of a battery pack from another perspective.

[0086] Fig.17 Shows Fig.16 A schematic cross-sectional view of a partial structure of an inverted battery pack in an embodiment along the VI-VI direction.

[0087] Fig.18 A schematic structural diagram of a partial structure of a battery module observed along a third direction Z is shown, wherein the first insulating material is not provided in the first recess.

[0088] Fig.19 Shows Fig.17 A partial structural diagram of a battery module in another embodiment.

[0089] Fig. 20 Shows Fig.19 An enlarged schematic diagram of point E in the embodiment.

[0090] Fig.21 A schematic structural diagram of the first component in some embodiments is shown.

[0091] Fig. 22 A schematic structural diagram of the first component from another perspective in some embodiments is shown.

[0092] Fig.23 Schematic diagrams of the structure of the second component in some embodiments are shown.

[0093] Fig.24 A schematic structural diagram of a second component from another perspective in some embodiments is shown.

[0094] Fig.25 Shows Fig.23 A schematic cross-sectional view of a partial structure of a battery module in an embodiment along the VII-VII direction.

[0095] Fig.26 A schematic diagram of the structure of a battery pack in some embodiments is shown.

[0096] Fig. 27 A schematic structural diagram of a battery pack from another perspective in some embodiments is shown.

[0097] Fig.28 An exploded schematic diagram of a battery pack in some embodiments is shown.

[0098] Fig.29 A schematic diagram showing the structure of part of a battery pack in some embodiments.

[0099] Fig.30 A schematic diagram of the structure of a portion of a battery pack from another perspective in some embodiments is shown.

[0100] Fig.31 A schematic structural diagram of part of a housing in some embodiments is shown.

[0101] Fig.32 A schematic diagram showing the manufacturing process of a battery module in some embodiments.

[0102] Fig.33 Shown are schematic structural diagrams of electrical equipment in some embodiments.

[0103] Description of main component symbols:

[0104] Battery module 100

[0105] First fastening member 100a

[0106] The second thermal conductive adhesive 100b

[0107] Insulator 100c

[0108] Battery cell assembly 20

[0109] Battery 21

[0110] Battery shell 211

[0111] Main body 211a

[0112] First housing 2111

[0113] First housing recess 2111a

[0114] Second housing 2112

[0115] Second housing recess 2112a

[0116] First extended edge 2113

[0117] The second extended edge 2114

[0118] Main left wall 2101

[0119] Main right wall 2102

[0120] Main body bottom wall 2103

[0121] Main body top wall 2104

[0122] Main body front wall 2105

[0123] Main body rear wall 2106

[0124] Sealing portion 211b

[0125] First sealing part 2115

[0126] Second sealing part 2116

[0127] Electrode terminal 212

[0128] Connection area 212a

[0129] Electrode assembly 213

[0130] The first member 30

[0131] first recess 301

[0132] First opening 301a

[0133] First space 301b

[0134] Second opening 302

[0135] The third opening 303

[0136] Fourth opening 304

[0137] Fifth opening 305

[0138] Sixth opening 306

[0139] Seventh opening 307

[0140] The third gap 30a

[0141] Base 31

[0142] Connecting protrusion 311

[0143] The second through hole 312

[0144] The third through hole 313

[0145] Fourth through hole 314

[0146] First side wall 32

[0147] The first limiting portion 33

[0148] The first connecting wall 331

[0149] The second connecting wall 332

[0150] The third connecting wall 333

[0151] Fourth connecting wall 334

[0152] The second limiting portion 34

[0153] The third limiting portion 35

[0154] Fourth limiting portion 36

[0155] Fifth limiting portion 37

[0156] Sixth limiting portion 38

[0157] The second member 40

[0158] First heat dissipation channel 40a

[0159] Protrusion 40b

[0160] First through hole 401

[0161] Front wall 41

[0162] The second opening 411

[0163] Rear wall 42

[0164] Fourth opening 421

[0165] Top wall 43

[0166] Projection 44

[0167] Bottom wall 45

[0168] Left wall 46

[0169] Right wall 47

[0170] The first insulating member 50

[0171] Heat conducting element 60

[0172] Part 161

[0173] Part 262

[0174] First gap 62a

[0175] Part 363

[0176] Second gap 63a

[0177] The third member 70

[0178] First hole 71

[0179] Second hole 72

[0180] The first conductive sheet 73

[0181] The second conductive sheet 74

[0182] The third hole 75

[0183] Fourth hole 76

[0184] Second insulating member 90

[0185] Fourth insulating member 91

[0186] Fifth insulating member 92

[0187] Conductive component 110

[0188] First connection portion 110a

[0189] Wire 110b

[0190] First paragraph 1101

[0191] First segment 1101a

[0192] Second segment 1101b

[0193] Second paragraph 1102

[0194] The second connection portion 110c

[0195] First electrical connector 120

[0196] The first conductive portion 120a

[0197] The first insulating portion 120b

[0198] The second electrical connection member 130

[0199] The second conductive portion 130a

[0200] The second insulating portion 130b

[0201] The first seal 140

[0202] Battery Pack 200

[0203] Second circuit board 210

[0204] The first fixing member 220

[0205] The first elastic member 230

[0206] The second elastic member 240

[0207] Housing 10

[0208] First housing opening 10a

[0209] Second housing opening 10b

[0210] Housing opening 101

[0211] Housing front wall 11

[0212] The first opening 111

[0213] The first fixing hole 112

[0214] Housing rear wall 12

[0215] The third opening 121

[0216] Shell left wall 13

[0217] First heat sink 131

[0218] Right wall of housing 14

[0219] Second heat sink 141

[0220] Shell bottom wall 15

[0221] Top cover 16

[0222] The third heat sink 161

[0223] Bracket 17

[0224] First direction X

[0225] Second direction Y

[0226] The third direction Z

[0227] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0228] The following specific embodiments are exemplary and non-limiting, and are intended to provide a basic understanding of the present application, and are 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 each embodiment can be combined in any way.

[0229] When a component is considered to be “provided on” another component, it can be directly provided on the other component or there may be a component in between. When a component is considered to be “connected to” another component, it can be directly connected to the other component or there may be a component in between.

[0230] It can be understood that the terms "perpendicular, equal" are used to describe an ideal state between two components. In actual production or use, there may be a state between two components that is approximately perpendicular or equal. For example, in combination with numerical descriptions, perpendicularity can refer to the angle between two straight lines being in the range of 90°±10°, perpendicularity can also refer to the dihedral angle between two planes being in the range of 90°±10°, and perpendicularity 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.

[0231] The terms “vertical”, “horizontal”, “left”, “right”, “top”, “bottom”, “front”, “back” and similar expressions used in this document are for illustrative purposes only and are not intended to limit this application.

[0232] The term "parallel" is used to describe an ideal state between two components. In actual production or use, two components may be approximately parallel. For example, combined with numerical descriptions, parallel can refer to the angle between two straight lines being between 180°±10°, parallel can also refer to the dihedral angle between two planes being between 180°±10°, and parallel can also refer to the angle between a straight line and a plane being between 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 the overall extension direction is a straight line or a plane.

[0233] Unless otherwise defined, when the term "plurality" is used to describe the number of components, it specifically means that the components are two or more.

[0234] 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, and in the third direction Z, it includes the third direction Z and a direction opposite to the third direction Z.

[0235] See also Figures 1 to 3 as well as Figures 17 to 22, an embodiment of the present application provides a battery module 100, including 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, and the electrode terminal 212 is led out 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, and a portion of each electrode terminal 212 is disposed in the first recess 301. At least a portion of the first insulating member 50 is disposed in a gap between the electrode terminal 212 and the first component 30. The second component 40 is provided with a first through hole 401, the second component 40 and the first component 30 are arranged along the first direction X, the first recess 301 includes a first opening 301a facing the second component 40, and along the first direction X, the projection of the first through hole 401 overlaps with the projection of the first opening 301a.

[0236] The present application disposes a portion of each electrode terminal 212 in the first recess 301 , and disposes the first insulating member 50 in the gap between the electrode terminal 212 and the first component 30 , thereby strengthening the sealing and insulation protection of the electrode terminal 212 , thereby strengthening the sealing and insulation protection of the battery module 100 .

[0237] In some embodiments, the first insulating member 50 is configured to be formed by curing a first insulating material.

[0238] In some embodiments, the first insulating material includes one of polyurethane glue, epoxy glue, and silicone glue. Optionally, the first insulating material includes potting glue. Optionally, the first insulating material includes foam glue.

[0239] 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 .

[0240] See also Figure 3 , Figure 4 and Figure 8 Each battery cell 21 includes an electrode assembly 213, which is disposed in a battery cell housing 211. An electrode terminal 212 is connected to the battery cell housing 211 and is led out from the battery cell housing 211. Adjacent electrode terminals 212 are connected to form a connection region 212a.

[0241] In some embodiments, the battery cell 21 includes a soft-pack battery cell. The battery cell housing 211 includes a main body 211a and a sealing portion 211b. The main body 211a is provided with a storage space, and the battery cell housing 211 includes a first housing 2111 and a second housing 2112. The first housing 2111 is provided with a first housing recess 2111a, and the second housing 2112 is provided with a second housing recess 2112a. The first housing 2111 is connected to the second housing 2112 to form a storage space. Part of the electrode assembly 213 is provided in the first housing recess 2111a, and part of it is provided in the second housing recess 2112a. The circumference of the first housing 2111 extends outward to form a first extension edge 2113, and the circumference of the second housing 2112 extends outward to form a second extension edge 2114. After the first housing 2111 is connected to the second housing 2112, the first extension edge 2113 and the second extension edge 2114 overlap and are sealed and connected to form a sealing portion 211b.

[0242] In some embodiments, in one embodiment, the main body 211a is provided with a storage space, the main body 211a includes a first shell 2111 and a second shell 2112, the first shell 2111 is provided with a first shell recess 2111a, and the second shell 2112 is flat. The first shell 2111 is connected to the second shell 2112 and forms a storage space. The electrode assembly 213 is provided in the first shell recess 2111a.

[0243] 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.

[0244] In some embodiments, the main body 211a includes a main body left wall 2101, a main body right wall 2102, a main body bottom wall 2103 and a main body top wall 2104. One second sealing portion 2116 is connected to the main body left wall 2101, another second sealing portion 2116 is connected to the main body right wall 2102, and the first sealing portion 2115 is connected to the main body top wall 2104.

[0245] Please note that in some embodiments, the second component 40 is a heat sink, and the heat sink includes a first heat dissipation channel 40 a . The first heat dissipation channel 40 a is connected to the outside, which is beneficial to dissipate heat for the battery cell assembly 20 .

[0246] 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 penetrates the front wall 41 and the rear wall 42. The first direction, the second direction and the third direction are perpendicular to each other.

[0247] In some embodiments, the battery module 100 can use a cooling medium to remove heat by passing the cooling medium through the first heat dissipation channel 40a. Optionally, the cooling medium includes air and liquid. Optionally, the liquid can be a liquid from the external environment, such as rain.

[0248] Taking air as the cooling medium as an example, in some embodiments, the battery module 100 can be used on a device that is in a static state during use. When the battery module 100 is in a static state, natural wind or external air cooling equipment, such as a fan, can be used to dissipate heat. Alternatively, the battery module 100 can be used on a device that is in a dynamic state during use, such as a drone, an electric power-assisted vehicle, etc. Since the air flows faster when the device is moving, rapid heat dissipation of the battery module 100 can be achieved.

[0249] It is understandable that, depending on the moving direction of the battery module 100, the side where the front wall 41 is located can be used as an air inlet or an air outlet. When the side where the front wall 41 is located can be used as an air inlet, the side where the rear wall 42 is located can be used as an air outlet. When the front wall 41 is used as an air outlet, the rear wall 42 can be used as an air inlet.

[0250] See also Figure 2 In some embodiments, the battery cell assembly 20 includes a first group of battery cells 201 and a second group of battery cells 202. The first group of battery cells 201 includes at least two battery cells 21 stacked along a third direction Z, and the second group of battery cells 202 includes at least two battery cells 21 stacked along a third direction Z. The first group of battery cells 201 and the second group of battery cells 202 are arranged along a second direction Y, and the second component 40 is disposed between the first group of battery cells 201 and the second group of battery cells 202 to dissipate heat for the first group of battery cells 201 and the second group of battery cells 202.

[0251] See also Figures 16 to 23 In some embodiments, the second member 40 includes a top wall 43 and a convex portion 44, and the top wall 43 connects the front wall 41 and the rear wall 42. The convex portion 44 extends from the top wall 43 along the first direction X. The first through hole 401 penetrates the convex portion 44 along the third direction Z. Along the first direction X, there is a first space 301b 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 from the first through hole 401, and the first space 301b can provide space for the external device, facilitate the external device to extend, and reduce 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.

[0252] See also Figures 16 to 23In some embodiments, the protrusion 44 is located outside the first recess 301, which reduces the occupation of the first recess 301 by the protrusion 44, reduces the length of the external device extending into the first recess 301, and further reduces the risk of external devices damaging components in the first recess 301.

[0253] 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 .

[0254] In some embodiments, the battery module 100 includes a waterproof breathable valve (not shown), which closes 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 in the battery module 100 .

[0255] In some embodiments, the first through hole 401 is separated from the first insulating member 50, so that the first fastener 100a can be connected to the first through hole 401. In some embodiments, the first through hole 401 is provided with the first insulating member 50, and the first through hole 401 can be sealed by the first insulating member 50 to reduce dust and other impurities from entering the first recess 301 through the first through hole 401.

[0256] 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 .

[0257] In some embodiments, along the second direction Y and along the first direction X, the protrusion 44 extends beyond the main body 211 a , thereby reducing the effect of the protrusion 44 on the heat dissipation of the main body 211 a and facilitating heat dissipation.

[0258] 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 simultaneously injected through the first through holes 401 provided on the two protrusions 44 , which is beneficial to improving the glue injection efficiency.

[0259] 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 .

[0260] 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. Along the third direction Z, the projection of the protrusion 44 is separated from the projection of the first sealing portion 2115 of the second group of battery cells 202, which can reduce the risk of external equipment extending from the first through hole 401 to damage the first sealing portion 2115.

[0261] In some embodiments, the first through hole 401 and the first heat dissipation channel 40 a are separated, so as to reduce the interference between the first through hole 401 and the first heat dissipation channel 40 a and facilitate the external device to extend into the first recess 301 through the first through hole 401 .

[0262] 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.

[0263] See also Figures 3 to 7 , Fig.29 and Fig.30 In some embodiments, the battery module 100 includes a heat conductor 60. The heat conductor 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 member 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. The heat of 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 the heat is dissipated through the first heat dissipation channel 40a.

[0264] In some embodiments, the second portion 62 contacts and connects to the left wall 46 , which is beneficial for heat dissipation.

[0265] 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.

[0266] In some embodiments, the heat conducting member 60 includes a first portion 61 and two second portions 62, and the two second portions 62 connect the two sides of the first portion 61 along the second direction Y. The first portion 61 connects 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 disposed on one side of the main body left wall 2101, and the other second portion 62 is disposed between the main body right wall 2102 and the left wall 46, which is further conducive to heat dissipation.

[0267] 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 .

[0268] In some embodiments, along the third direction Z, heat conducting members 60 are provided on both sides of each main body portion 211a. The first portion 61 of one 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, which can dissipate heat from the main body front wall 2105 and the main body rear wall 2106 of each main body portion 211a, which is beneficial to improving heat dissipation efficiency.

[0269] In some embodiments, the battery module 100 includes a second thermally conductive adhesive 100b, and the first portion 61 is connected to the main body front wall 2105 and the main body rear wall 2106 through the second thermally conductive adhesive 100b, which is beneficial to heat dissipation.

[0270] 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.

[0271] 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.

[0272] In some embodiments, when viewed along the second direction Y, in the third direction Z, there is a first gap 62a (eg, Fig.30 As shown), the possibility of stacking the two second parts 62 is reduced, the flatness of the second part 62 can be improved, which is conducive to connecting the left wall 46, ensuring the heat dissipation area, facilitating assembly, and facilitating production.

[0273] In some embodiments, when viewed along the first direction X, in the third direction Z, there is a second gap 63a (eg, Fig.29 As shown), the possibility of stacking the two third parts 63 is reduced, the flatness of the third part 63 can be improved, the heat dissipation area is guaranteed, the assembly is convenient, and the production is beneficial.

[0274] See also Figure 6 and Figure 7In some embodiments, when the battery cell 21 is not connected to the heat conductive member 60, the second portion 62 of the heat conductive member 60 is configured to be arranged in a direction away from the first portion 61, so that the second portion 62 is arranged obtusely with respect to the first portion 61, and the angle between the second portion 62 and the first portion 61 is arranged at an obtuse angle α. When the battery cell 21 is placed on the heat conductive member 60, the battery cell 21 can slide in along the inclined surface of the second portion 62 and be connected to the first portion 61, which can reduce the risk of the second portion 62 scratching the battery cell housing 211, and facilitate the installation of the battery cell 21.

[0275] See also Figure 3 , Figure 8 , Fig. 9 , Fig.18 and Fig. 20 In some embodiments, the battery module 100 further includes a third component 70 , and 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 , so as to reduce the impact of external equipment extending from the first through hole 401 on the third component 70 .

[0276] 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 housing 211 , and the first insulating member 50 covers at least a portion of the third member 70 to insulate and protect the third member 70 .

[0277] In some embodiments, the electrode terminal 212 , the third component 70 and the first component 30 are bonded by the first insulating member 50 , which improves the connection stability of the electrode terminal 212 , the third component 70 and the first component 30 and seals and insulates the electrode terminal 212 , the third component 70 and the first component 30 .

[0278] 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 .

[0279] 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 are extended along the second direction Y. The electrode terminal 212 of the 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 to form a connection area 212a, and the connection area 212a is connected to the third member 70. The connection area 212a is located between the third member 70 and the first member 30.

[0280] 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 the adjacent battery cell 21 passes through the first hole 71, the electrode terminal 212 of another battery cell 21 passes through the second hole 72, and the two electrode terminals are stacked and welded on the first conductive sheet 73. Welding includes laser welding, ultrasonic welding, etc. In other embodiments, the connection area 212a and the first conductive sheet 73 can also be connected by other means such as conductive glue.

[0281] In one embodiment, the first conductive sheet 73 is configured to collect electrical signal information of the battery cell, and the electrical signal information includes but is not limited to voltage, current, temperature, and resistance.

[0282] In one embodiment, the third member 70 is further provided with a second conductive sheet 74. The second conductive sheet 74 connects the electrode terminal 212 of the first group of battery cells 201 and the electrode terminal 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 realizing a series connection or a parallel connection between the first group of battery cells 201 and the second group of battery cells 202.

[0283] In some embodiments, the third member 70 further includes a third hole 75, and when viewed along a direction X' opposite to the first direction X, along the third direction Z, the third hole 75 is located between the first hole 71 and the second hole 72. The third hole 75 can facilitate the first insulating material to flow into the first recess 301, thereby improving the efficiency of injecting the first insulating material into the first recess 301.

[0284] In some embodiments, the third member 70 is further provided with a fourth hole 76, and the fourth hole 76 is provided at the middle position of the third member 70 along the second direction Y. The battery module 100 further includes a conductive component 110. The conductive component 110 includes a first connecting portion 110a, a wire 110b, and a second connecting portion 110c. The first connecting portion 110a is connected to the third member 70 through a plurality of fourth holes 76, and the wire 110b connects the first connecting portion 110a and the second connecting portion 110c.

[0285] In some embodiments, the conductive component 110 is configured to transmit the electrical signal information of the battery cell 21 and / or transmit the power of the battery cell component 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 the electrical signal information of the battery cell 21 as an example.

[0286] 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).

[0287] See also Figures 1 to 3 and Figure 8 In some embodiments, the battery module 100 further includes a first electrical connector 120 and a second electrical connector 130, and the first electrical connector 120 and the second electrical connector 130 are connected to an external device to realize the input or output of electric 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 includes a copper busbar, and the second electrical connector 130 includes a copper busbar.

[0288] 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.

[0289] 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 welding the electrode terminal 212 to connect to the first conductive sheet 73 and facilitate welding the first conductive portion 120a to connect to the first conductive sheet 73.

[0290] 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.

[0291] 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 welding the electrode terminal 212 to connect to another first conductive sheet 73 and facilitate welding the second conductive portion 130a to connect to another first conductive sheet 73.

[0292] See also Figures 1 to 3 , Fig.21 and Fig.23 In some embodiments, the outer surface of the first member 30 is insulating. Optionally, the first member 30 is made of an insulating material. Optionally, 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.

[0293] In some embodiments, the first component 30 includes a base 31, which is disposed on a side of the third component 70 away from the battery cell housing 211. A connecting protrusion 311 is disposed on a side of the base 31 facing the third component 70, and the connecting protrusion 311 is connected to the third component 70, so that a third gap 30a is provided between the third component 70 and the base 31, and the connecting area 212a is located in the third gap 30a, which is conducive to the first insulating material flowing into the third gap 30a, covering the connecting area 212a, insulating and protecting the connecting area 212a, and facilitating the bonding of the third component 70 to the base 31.

[0294] In some embodiments, the first member 30 includes a first side wall 32, the first side wall 32 is formed by extending the edge of the base 31, the first side wall 32 and the base 31 form a first recess 301, and the first recess 301 is arranged toward the battery cell assembly 20 in a direction opposite to the first direction X. Optionally, the first member 30 includes four first side walls 32, and the four first side walls 32 and the base 31 enclose the first recess 301.

[0295] In some embodiments, one end of the four first side walls 32 away from the base 31 forms a first opening 301 a .

[0296] 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 , so that the third member 70 can be insulated and protected.

[0297] 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. Optionally, 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.

[0298] See also Figures 1 to 3 , Figures 10 to 12 and Fig. 20 In some embodiments, the battery module 100 includes a first limiting portion 33 , the first limiting portion 33 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 .

[0299] 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 .

[0300] 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 .

[0301] In some embodiments, the battery module 100 includes a second insulating member 90, at least a portion of which is disposed in a 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.

[0302] In some embodiments, the second insulating member 90 covers the connection between the first connection portion 110a and the third member 70, and insulates and protects the connection between the first connection portion 110a and the third member 70. The second insulating member 90 covers the conductive component 110 located in the first limiting portion 33. Optionally, the second insulating member 90 covers the wire 110b and the first connection portion 110a located in the first limiting portion 33.

[0303] In some embodiments, before the second insulating material is poured, the second through hole 312 is connected to 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 is no longer connected to the second opening 302.

[0304] In some embodiments, the battery module 100 includes a second limiting portion 34, and along the first direction X, the projection of the second through hole 312 is located within the projection of the second limiting portion 34. The second limiting portion 34 is connected to the side of the base 31 facing the third member 70, and the second limiting portion 34 is connected to the third member 70, which can reduce the second insulating material from entering the first recess 301. The second limiting portion 34 includes a third opening 303. The conductive component 110 is led out from the third opening 303, the second through hole 312 and the second opening 302.

[0305] 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.

[0306] Before pouring the first insulating material, the second insulating material is poured first, so that the third opening 303 is no longer connected to the second through hole 312, and the first insulating material is reduced from entering the first limiting portion 33 and the second limiting portion 34. At least part of the second insulating member 90 is arranged in the gap between the first limiting portion 33 and the conductive component 110 and 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 at the second limiting portion 34 and the third member 70, insulates and protects the connection between the first connecting portion 110a and the third member 70, reduces the risk of short circuit, and the second insulating member 90 covers the first connecting portion 110a and the wire 110b, and the second insulating member 90 is arranged in the gap between adjacent wires 110b.

[0307] In some embodiments, the battery module 100 includes a first limiting portion 33 and a second limiting portion 34. Before the second insulating material is poured, the third opening 303, the second through hole 312 and the second opening 302 are connected to each other. The second insulating member 90 is disposed at 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.

[0308] In some embodiments, the battery module 100 includes a second limiting portion 34. Before the second insulating material is poured, the third opening 303 and the second through hole 312 are connected to each other. The second insulating member 90 is disposed at the third opening 303, the second through hole 312 and the second opening 302, so that the third opening 303 and the second through hole 312 are no longer connected. The second limiting portion 34 can limit the second insulating material from overflowing outside the second limiting portion 34.

[0309] In some embodiments, along the first direction X, the projection of the first limiting portion 33 overlaps with the projection of the second limiting portion 34. The first limiting portion 33 and the second limiting portion 34 may be any structure surrounding the first connecting portion 110a and the wire 110b located in 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 may be a triangular prism, a quadrangular prism, a pentagonal prism, etc. This application is described by taking the first limiting portion 33 as a quadrangular prism as an example.

[0310] 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, and forms 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 wire 110b located in the second opening 302.

[0311] In some embodiments, the first limiting portion 33 and the second limiting portion 34 are integrally formed with the base 31, for example, by injection molding.

[0312] In some embodiments, the first limiting portion 33 and the second limiting portion 34 are adhesively connected to the base 31 .

[0313] 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, and can further isolate the first recess 301 and the third opening 303, further reducing the second insulating material from entering the first recess 301. Optionally, the first seal 140 includes a compressible elastic member, such as foam, such as a silicone pad.

[0314] 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.

[0315] In some embodiments, the second insulating material includes at least one of polyurethane glue, epoxy glue, and silicone glue. Optionally, the second insulating material includes quick-drying glue.

[0316] In some embodiments, the wire 110b includes a first section 1101 disposed at the first limiting portion 33 and a second section 1102 extending from the first limiting portion 33. The first section 1101 includes a first segment 1101a and a second segment 1101b, and the first segment 1101a connects the first connection portion 110a and the second segment 1101b.

[0317] The battery module 100 also includes a third insulating member, which is configured to be formed by curing after the third insulating material is provided on the first limiting portion 33 and the second limiting portion 34. The third insulating member is partially located at the second limiting portion 34, partially located at the first limiting portion 33, and partially located at the second through hole 312. The viscosity of the third insulating material is greater than that of the second insulating material, which is conducive to strengthening the waterproofness of the conductive component 110. After the third insulating material is cured to form the third insulating member, the second insulating material is poured into the first limiting portion 33, and the second insulating material is cured to form the second insulating material.

[0318] See also Figures 1 to 3 , Fig.13 , Fig.14 In some embodiments, the battery module 100 includes a third stopper 35, the third stopper 35 is connected to the side of the base 31 away from the third member 70, and the third stopper 35 includes a fourth opening 304. The first member 30 includes a third through hole 313, and the third through hole 313 penetrates the base 31 along the first direction X. The first electrical connector 120 is led out from the third through hole 313 and the fourth opening 304.

[0319] 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 first conductive portion 120a is insulated and protected by the third limiting portion 35. The battery module 100 includes a fourth insulating member 91. The fourth insulating member 91 is configured to be formed by setting a fourth insulating material on the third limiting portion 35 and then curing it. At least a portion of the fourth insulating member 91 is set 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.

[0320] 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 out of the third through hole 313, and the projection of the portion of the first conductive sheet 73 extending out of the third through hole 313 are located within the projection of the third limiting portion 35, and the first conductive portion 120a, the electrode terminal 212, and the first conductive sheet 73 are further insulated and protected by the third limiting portion 35. The fourth insulating member 91 covers the first conductive portion 120a, the portion of the electrode terminal 212 extending out of the third through hole 313, and the portion of the first conductive sheet 73 extending out of the third through hole 313, to further insulate and protect.

[0321] Optionally, the projection of the first insulating portion 120b is located within the projection of the third limiting portion 35. The first conductive portion 120a, the portion of the electrode terminal 212 extending out of the third through hole 313, the portion of the first conductive sheet 73 extending out of the third through hole 313, and the first insulating portion 120b located within the third limiting portion 35 are insulated and protected by the third limiting portion 35. The fourth insulating member 91 covers the first conductive portion 120a, the portion of the electrode terminal 212 extending out of the third through hole 313, the portion of the first conductive sheet 73 extending out of the third through hole 313, and the first insulating portion 120b located within the third limiting portion 35 for further insulation and protection.

[0322] In some embodiments, before the fourth insulating material is poured, the third through hole 313 is connected to 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 is no longer connected to the fourth opening 304.

[0323] In some embodiments, the battery module 100 includes a fourth limiting portion 36, and along the first direction X, the projection of the third through hole 313 is located within the projection of the fourth limiting portion 36. The fourth limiting portion 36 is connected to the side of the base 31 facing the third member 70, which can reduce the fourth insulating material from entering the first recess 301. The fourth limiting portion 36 includes a fifth opening 305. The first electrical connector 120 is led out from the fifth opening 305, the third through hole 313 and the fourth opening 304.

[0324] 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.

[0325] 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, 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, and the fourth insulating member 91 covers the first conductive portion 120a, the electrode terminal 212 and the first conductive sheet 73 located in the fourth limiting portion 36, further insulating and protecting, and reducing the risk of short circuit.

[0326] In some embodiments, the battery module 100 includes a third limiting portion 35 and a fourth limiting portion 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.

[0327] 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.

[0328] In some embodiments, the structures of the third limiting portion 35 and the fourth limiting portion 36 are substantially the same as the structures of the first limiting portion 33 and the second limiting portion 34 , and are not described in detail herein.

[0329] In some embodiments, the third limiting portion 35 and the fourth limiting portion 36 are integrally formed with the base 31, for example, by injection molding.

[0330] In some embodiments, the third limiting portion 35 and the fourth limiting portion 36 are adhesively connected to the base 31 .

[0331] In some embodiments, the fourth insulating material includes one of polyurethane glue, epoxy glue, and silicone glue. Optionally, the fourth insulating material includes quick-drying glue.

[0332] See also Figures 1 to 3 and Fig.15 In some embodiments, the battery module 100 includes a fifth stopper 37, the fifth stopper 37 is connected to the side of the base 31 away from the third member 70, and the fifth stopper 37 includes a sixth opening 306. The base 31 has a fourth through hole 314, and the fourth through hole 314 penetrates the base 31 along the first direction X. The second electrical connector 130 is led out from the fourth through hole 314 and the sixth opening 306.

[0333] 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 second conductive portion 130a is insulated and protected by the fifth limiting portion 37. The battery module 100 includes a fifth insulating member 92. The fifth insulating member 92 is configured to be formed by setting a fifth insulating material on the fifth limiting portion 37 and then curing it. At least a portion of the fifth insulating member 92 is set 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.

[0334] 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 out of the fourth through hole 314, and the projection of the portion of the first conductive sheet 73 extending out of the fourth through hole 314 are located within the projection of the fifth limiting portion 37, and the second conductive portion 130a, the electrode terminal 212, and the first conductive sheet 73 are further insulated and protected by the fifth limiting portion 37. The fifth insulating member 92 covers the second conductive portion 130a, the portion of the electrode terminal 212 extending out of the fourth through hole 314, and the portion of the first conductive sheet 73 extending out of the fourth through hole 314, to further insulate and protect.

[0335] Optionally, the projection of the second insulating portion 130b is located within the projection of the fifth limiting portion 37. The second conductive portion 130a, the portion of the electrode terminal 212 extending out of the fourth through hole 314, the portion of the first conductive sheet 73 extending out of the fourth through hole 314, and the second insulating portion 130b located within the fifth limiting portion 37 are insulated and protected by the fifth limiting portion 37. The fifth insulating member 92 covers the second conductive portion 130a, the portion of the electrode terminal 212 extending out of the fourth through hole 314, the portion of the first conductive sheet 73 extending out of the fourth through hole 314, and the second insulating portion 130b located within the fifth limiting portion 37 for further insulation and protection.

[0336] In some embodiments, before the fifth insulating material is poured, the fourth through hole 314 is connected to 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 is no longer connected to the sixth opening 306.

[0337] In some embodiments, the battery module 100 includes a sixth limiting portion 38, and along the first direction X, the projection of the fourth through hole 314 is located within the projection of the sixth limiting portion 38. The sixth limiting portion 38 is connected to the side of the base 31 facing the third member 70, which can reduce the fourth insulating material from entering the first recess 301. The sixth limiting portion 38 includes a seventh opening 307. The second electrical connector 130 is led out from the seventh opening 307, the fourth through hole 314 and the sixth opening 306.

[0338] 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.

[0339] 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 .

[0340] 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.

[0341] In some embodiments, the battery module 100 includes a fifth limiting portion 37 and a sixth limiting portion 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, so that the sixth opening 306, the fourth through hole 314 and the seventh opening 307 are no longer connected.

[0342] 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.

[0343] In some embodiments, the structures of the fifth limiting portion 37 and the sixth limiting portion 38 are substantially the same as the structures of the first limiting portion 33 and the second limiting portion 34 , and are not described in detail herein.

[0344] 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.

[0345] In some embodiments, the fifth limiting portion 37 and the sixth limiting portion 38 are adhesively connected to the base 31 .

[0346] In some embodiments, the fifth insulating material includes one of polyurethane glue, epoxy glue, and silicone glue. Optionally, the fifth insulating material includes quick-drying glue.

[0347] See also Figures 1 to 25 Another embodiment of the present application provides a battery module 100, including 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, and the electrode terminal 212 is led out 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, and a portion of each electrode terminal 212 is disposed in the first recess 301. At least a portion of the first insulating member 50 is disposed in a gap between the electrode terminal 212 and the first component 30. The second component 40 is provided with 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 convex portion 44, the convex portion 44 extends from the top wall 43, and the first through hole 401 passes through the convex portion 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.

[0348] In some embodiments, when viewed along the 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.

[0349] 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.

[0350] 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.

[0351] In the present application, a portion of each electrode terminal 212 is disposed in the first recess 301, and the first insulating member 50 is disposed in the gap between the electrode terminal 212 and the first member 30, thereby strengthening the sealing and insulation protection of the electrode terminal 212. Furthermore, by disposing the first through hole 401 in the convex portion 44 and disposing the first insulating member 50 toward the first recess 301 through the first through hole 401, it is possible to reduce the need to dispose other channel structures in the battery module 100, thereby reducing restrictions on the structure of the battery module 100.

[0352] 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 will not be elaborated herein.

[0353] See also Figures 1 to 25 Another embodiment of the present application provides a battery module 100, including a cell assembly 20, a first component 30, a third component 70, a second stopper 34, a conductive component 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, and the electrode terminal 212 is led out of the cell housing 211. The third component 70 includes a first hole 71 and a second hole 72, and the electrode terminal 212 passes through the first hole 71 and the second hole 72. The cell housing 211 and the third component 70 are arranged along a first direction. An insulating material is provided on the outer surface of the first component 30, and the first component includes a base 31, which is provided on a side of the third component 70 away from the cell housing 211. Along the first direction X, the first component 30 includes a second through hole 312 that penetrates the base 31. The second stopper 34 is provided on a side of the base 31 facing the cell housing 211, and the second stopper 34 includes a third opening 303. The conductive component 110 is connected to the cell component 20, and is partially disposed on 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.

[0354] The second insulating member 90 is configured to be formed by placing a second insulating material in a 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 limit the second insulating material from overflowing out of the second limiting portion 34.

[0355] 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 .

[0356] 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 will not be elaborated herein.

[0357] See also Fig.32 The present application also provides a method for manufacturing the battery module 100, comprising the following steps:

[0358] Step 1: Connect the battery cell assembly 20, the second component 40 and the first component 30;

[0359] Step 2: Invert the battery module, inject the first insulating material from the first through hole 401 into the first recess 301 , and solidify the first insulating material to form the first insulating member 50 .

[0360] See also Fig.17 Inverting the battery module 100 includes arranging the battery module 100 in a direction opposite to the first direction X.

[0361] See also 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 arranging a portion of the electrode terminal 212 of the battery cell assembly 20 in the first recess 301 .

[0362] See also Figures 1 to 3 , Fig.11 , Figure 14 to Figure 15 In some embodiments, after step 1, the method further includes: closing the first component 30. Specifically, the method includes injecting a second insulating material into the second limiting portion 34 and the first limiting portion 33, and solidifying the second insulating material 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, and solidifying the fourth insulating material 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, and solidifying the fifth insulating material to form a fifth insulating member 92.

[0363] Please also read Fig.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 the first insulating material into the first recess 301, and the first insulating material is solidified to form the first insulating member 50.

[0364] See also Figure 26 to Figure 31 In another embodiment of the present application, a battery pack 200 is provided including the battery module 100 in any of the above embodiments, and the battery pack 200 includes a housing 10 and a top cover 16. The top cover 16 is connected to the housing 10 and forms a receiving space, and the battery module 100 is located in the receiving space.

[0365] 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 .

[0366] See also Fig.28 In some embodiments, the 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 the second direction Y, and the housing front wall 11 and the housing rear wall 12 are arranged along the 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, 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, and the 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, and forms 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.

[0367] 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 .

[0368] In some embodiments, the battery pack 200 includes a bracket 17, which 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 the first direction X, and the top cover 16 is connected to the bracket 17.

[0369] 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 includes 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 include a metal thermally conductive material and a thermally conductive insulating material, and the insulating material may cover the outer surface of the metal thermally conductive material. Optionally, the metal thermally conductive material includes aluminum.

[0370] See also Fig.28 and Fig.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.

[0371] Optionally, along the second direction Y, a first heat sink 131 is provided on the side of the left housing wall 13 away from the right housing wall 14 , and a second heat sink 141 is provided on the side of the right housing wall 14 away from the left housing wall 13 . Optionally, the top cover 16 is provided with a third heat sink 161 .

[0372] See also Figure 26 to Figure 28 In some embodiments, the housing 10 includes a housing opening 101, and the housing opening 101 includes a first housing opening 10a and a second housing opening 10b. The first housing opening 10a penetrates the housing front wall 11, and the second housing opening 10b penetrates the housing rear wall 12. The first heat dissipation channel 40a communicates with 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.

[0373] It is understandable that, according to the moving direction of the battery pack 200, the first housing opening 10a can be used as an air inlet or an air outlet. When the first housing opening 10a can be used as an air inlet, the second housing opening 10b can be used as an air outlet. When the first housing opening 10a can be used as an air outlet, the second housing opening 10b can be used as an air inlet.

[0374] See also Fig.28 and Fig.31 In some embodiments, the battery pack 200 includes a second circuit board 210, and the second circuit board 210 is connected to the top cover 16. The second connecting portion 110c is connected to the second circuit board 210, and the collected information can be transmitted to the second circuit board 210.

[0375] 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.

[0376] 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 disposed on the second circuit board 210.

[0377] See also Figure 26 to Figure 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.

[0378] 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, 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, and fixes the front wall 41 to the housing front wall 11. Optionally, the first fixing member 220 includes a screw.

[0379] 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, the rear wall 42 is provided with a fourth opening 421, and the second fixing member passes through the third opening 121 and connects to the fourth opening 421 to fix the rear wall 42 to the housing rear wall 12. Optionally, the second fixing member includes a screw.

[0380] In some embodiments, the battery module 100 further includes a second seal (not shown), which is disposed between the front wall 11 and the front wall 41 of the housing, and the second seal connects the front wall 11 and the front wall 41 of the housing, and can increase the sealing between the front wall 11 and the front wall 41 of the housing. Optionally, the second seal is bonded to the front wall 11 and the front wall 41 of the housing. Optionally, the second seal includes foam. Optionally, the second seal includes sealant.

[0381] In some embodiments, the battery module 100 further includes a third seal (not shown), which is disposed between the rear wall 12 of the housing and the rear wall 42. The third seal connects the rear wall 12 of the housing and the rear wall 42, and can increase the sealing between the rear wall 12 of the housing and the rear wall 42. Optionally, the third seal is bonded to the rear wall 12 of the housing and the rear wall 42. Optionally, the third seal includes foam. Optionally, the third seal includes sealant.

[0382] See also Figure 23 to Figure 28 In some embodiments, the front wall 11 of the housing is provided with a first fixing hole 112, and the first fixing hole 112 passes through the front wall 11 of the housing. The first fixing hole 112 is connected to the first through hole 401. After the first insulating member 50 is disposed in the first recess 301, the first through hole 401 can be used to discharge the gas in the battery module 100, so as to achieve pressure balance inside and outside the battery module 100 and improve the safety of the battery module 100.

[0383] 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, and can close the first through hole 401, reduce dust and other impurities from entering the first recess 301 through the first through hole 401, and also plays a role in connecting the second member 40 to the housing front wall 11. Optionally, the first fastener 100a includes a screw.

[0384] 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.

[0385] In some embodiments, the first through hole 401 is separated from the first insulating member 50 , so that the first fastener 100 a can be connected to the first through hole 401 .

[0386] 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 a sealant.

[0387] 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 .

[0388] In some embodiments, the second component 40 includes a protrusion 40b, the protrusion 40b is disposed in the first heat dissipation channel 40a, and the protrusion 40b is extended along the third direction Z. Along the third direction Z, one end surface of the protrusion 40b is coplanar with the front wall 41, and the other end surface is coplanar with the rear wall 42. The second opening 411 is disposed on one end surface, and the 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.

[0389] In some embodiments, the protrusion 40b is disposed on a side surface of the left wall 46 facing the right wall 47. In some embodiments, the protrusion 40b is disposed on a side surface of the right wall 47 facing the left wall 46. In some embodiments, the surfaces of the left wall 46 and the right wall 47 facing each other are both provided with protrusions 40b.

[0390] See also Figure 6 , Figure 7 , Figure 29 to Figure 30 In some embodiments, the heat conducting member 60 includes a first portion 61 and two second portions 62, and the two second portions 62 are connected to both sides of the first portion 61 along the 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 arranged in the receiving space, along the second direction Y, one of the second portions 62 is arranged between the main body left wall 2101 and the shell left wall 13, and the other second portion 62 is arranged between the main body right wall 2102 and the left wall 46. The heat of the main body front wall 2105 or the main body rear wall 2106 is conducted to the shell left wall 13 and the left wall 46 through the second portion 62, which is further conducive to heat dissipation.

[0391] 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.

[0392] 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 another second portion 62 is connected to the left wall 46 through the first thermally conductive adhesive, which is beneficial to heat dissipation.

[0393] In some embodiments, the heat conducting member 60 includes a third portion 63, and the third portion 63 is connected to the first portion 61. The second portion 62 is disposed between the housing bottom wall 15 and the body bottom wall 2103, and the third portion 63 is connected to the housing bottom wall 15, and the heat of the body front wall 2105 or the body rear wall 2106 is conducted to the housing bottom wall 15 through the third portion 63, which is further conducive to heat dissipation.

[0394] 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 to heat dissipation.

[0395] 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 parts 62 located on the same side of the two heat conducting members 60 are located between the left wall 13 of the shell and the left wall 2101 of the main body, and the two second parts 62 are connected to the left wall 13 of the shell. The two second parts 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 parts 62 are connected to the left wall 46. The two third parts 63 located on the same side of the two heat conducting members 60 are located between the bottom wall 15 of the shell and the bottom wall 2103 of the main body, and the two third parts 63 are connected to the bottom wall 15 of the shell. The second part 62 is connected to the left wall 13 of the shell and the left wall 46, and the third part 63 is connected to the bottom wall 15 of the shell. Both the second part 62 and the third part 63 can conduct the heat of the main body 211a, further improving the heat dissipation efficiency.

[0396] See also Figure 6 and Figure 7 In some embodiments, when the battery cell 21 is not connected to the heat conductive member 60, the second portion 62 of the heat conductive member 60 is configured to be arranged in a direction away from the first portion 61, so that the second portion 62 is arranged obtusely with respect to the first portion 61, and the angle between the second portion 62 and the first portion 61 is arranged at an obtuse angle α. When the battery cell 21 is placed on the heat conductive member 60, the battery cell 21 can slide in along the inclined surface of the second portion 62 and be connected to the first portion 61, which can reduce the risk of the second portion 62 scratching the battery cell housing 211, and facilitate the installation of the battery cell 21.

[0397] In some embodiments, the two second parts 62 of the heat conductive member 60 are configured to be arranged in a direction away from the first part 61, so that the two second parts 62 are flared, and the battery cell 21 slides in along the inclined surfaces of the two second parts 62 and is connected to the first part 61. When the battery cell assembly 20, the second member 40 and the heat conductive member 60 are installed in the housing 10, the left wall 13 and the left wall 46 of the housing can squeeze the second part 62 arranged obliquely, so that the second part 62 is close to the first part 61 and is roughly parallel to the surface of the left wall 13 of the housing. Optionally, after the assembly is completed, the second part 62 is perpendicular to the first part 61. Not only can the risk of scratching the battery cell housing 211 be reduced, and the battery cell 21 can be installed conveniently, but also the space reserved for installing the battery cell 21 can be reduced, which is conducive to reducing the size of the heat conductive member 60, thereby reducing the space occupied by the heat conductive member 60 and improving the space utilization.

[0398] 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°.

[0399] See also Figure 3 , Fig.28 and Fig.29 In some embodiments, the battery module 100 includes a first elastic member 230. The first elastic member 230 is disposed between the front wall 11 of the housing and the first portion 61 connected to the first battery cell 21a, which can provide expansion space for the battery cell 21, and can reduce the heat dissipation of the first portion 61 connected to the first battery cell 21a through the front wall 11 of the housing, and can reduce the temperature difference between the multiple battery cells 21, which is beneficial to improving the performance of the battery pack 200.

[0400] In some embodiments, the first elastic member 230 is disposed between the rear wall 12 of the housing and the first portion 61 connected to the second battery cell 21b, which can provide expansion space for the battery cell 21, and can reduce the heat dissipation of the first portion 61 connected to the second battery cell 21b through the rear wall 12 of the housing, and can reduce the temperature difference between the multiple battery cells 21, which is further beneficial to improve the performance of the battery pack 200. Optionally, the first elastic member 230 includes foam.

[0401] See also Figure 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 cell 21. Optionally, the second elastic member 240 includes foam.

[0402] See also Fig.28In 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.

[0403] See also Fig.33 The present application also provides an electric device 300 using the above-mentioned battery pack 200. In one embodiment, the electric device 300 of the present application can be, but is not limited to, electronic equipment, drones, backup power supplies, electric vehicles, electric motorcycles, electric power-assisted bicycles, electric tools, large household battery modules, etc.

[0404] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present application, and are not used as limitations on the present application. As long as they are within the spirit of the present application, appropriate changes and modifications to the above embodiments are within the scope of 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 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.

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, characterized in that: 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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