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

Abstract

The application discloses a battery module, a manufacturing method thereof, a battery pack and a power utilization device. The battery module comprises a battery cell assembly, a first component, a first insulating component and a second component. The battery cell assembly comprises a plurality of battery cells, each of which comprises a battery cell shell and an electrode terminal drawn from the battery cell shell. The battery cell assembly and the first component are arranged along a first direction, and the first component has a first recess, and a part of each electrode terminal is arranged in the first recess. At least part of the first insulating component is arranged 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 first recess comprises a first opening facing the second component, and along the first direction, a projection of the first through hole and a projection of the first opening overlap. By arranging the first insulating component in the gap between the electrode terminal and the first component, the sealing and insulation protection of the electrode terminal are strengthened, and the sealing and insulation protection of the battery module are further strengthened.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage, and in particular to a battery module, a manufacturing method thereof, a battery pack and a power consumption device. BACKGROUND

[0002] At present, battery packs are widely used in the fields of unmanned aerial vehicles, electric vehicles, intelligent energy storage devices, etc. The application environment of power consumption devices can be outdoor, and the sealing and insulation protection of the battery pack need to be strengthened. SUMMARY

[0003] Therefore, it is necessary to provide a battery module, a manufacturing method thereof, a battery pack and a power consumption device, which can strengthen the sealing and insulation protection of the battery module and the battery pack.

[0004] Embodiments of the present application provide a battery module, which comprises a cell assembly, a first member, a first insulation member and a second member. The cell assembly comprises a plurality of cells, each cell comprising a cell shell and an electrode terminal, the electrode terminal being led out from the cell shell. The cell assembly and the first member are arranged along a first direction, the first member having a first recess, and a part of each electrode terminal being arranged in the first recess. At least a part of the first insulation member is arranged in a gap between the electrode terminal and the first member. The second member is provided with a first through hole, and the second member and the first member are arranged along the first direction. The first recess comprises a first opening facing the second member, and along the first direction, a projection of the first through hole and a projection of the first opening overlap. The present application arranges a part of each electrode terminal in the first recess, and strengthens the sealing and insulation protection of the electrode terminal by arranging the first insulation member in the gap between the electrode terminal and the first member, thereby strengthening the sealing and insulation protection of the battery module.

[0005] Optionally, in some embodiments of the present application, the second member comprises a top wall and a protruding portion, and the first through hole penetrates through the protruding portion. Along the first direction, the protruding 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 insulation material is injected, the external device extends into the first space from the first through hole, which can provide space for the external device to extend into, facilitate the extension of the external device, and reduce the risk of damage to the elements in the first recess by the external device.

[0006] Optionally, in some embodiments of the present application, the protruding portion is located outside the first recess, which reduces the occupation of the first recess by the protruding portion, reduces the length of the extension of the external device into the first recess, and further reduces the risk of damage to the elements in the first recess by the external device.

[0007] Optionally, in some embodiments of the present application, the first through hole is located outside the first recess, which facilitates the external device to pass through the first through hole and enter the first recess.

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

[0009] Optionally, in some embodiments of the present application, the first through hole is provided with a first insulating member, and the first through hole is sealed by the first insulating member, so as to reduce the impurities such as dust from entering 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 member is greater than the length of the plurality of stacked battery cells, and the two ends of the second member protrude out of the battery cell assembly, which is conducive to the arrangement of the protrusion so that the protrusion is located outside the first recess.

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

[0012] Optionally, in some embodiments of the present application, the second member and the plurality of battery cells are arranged in the second direction, and in the first direction, the protrusion exceeds the main body portion, thereby reducing the influence of the protrusion on the heat dissipation of the main body portion, facilitating heat dissipation, and the first direction is perpendicular to the second direction.

[0013] Optionally, in some embodiments of the present application, in 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, thereby reducing the risk of damage to the first sealing portion caused by the external equipment extending into the first through hole.

[0014] Optionally, in some embodiments of the present application, 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 in 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 comprises at least two battery cells arranged in the third direction, and the second group of battery cells comprises at least two battery cells arranged in the third direction. The first direction, the second direction and the third direction are perpendicular to each other. In 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, thereby reducing the risk of damage to the first sealing portion caused by the external equipment extending into the first through hole.

[0015] Optionally, in some embodiments of the present application, the battery module further comprises a third member, and the electrode terminal penetrates through the third member and is connected to the side of the third member away from the battery cell shell. The first insulating member covers at least part of the third member, thereby sealing and insulating the third member.

[0016] Optionally, in some embodiments of the present application, the electrode terminal, the third member and the first member are adhesively connected by the first insulating member.

[0017] Optionally, in some embodiments of the present application, the battery module further comprises a first limiting portion. The first member comprises a base portion, and the first limiting portion is connected to a side of the base portion facing away from the third member. The first limiting portion comprises a second opening. The first member comprises a second through hole penetrating through the base portion. The battery module further comprises a conductive assembly connected to the third member, and the conductive assembly 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 comprises a second insulating member. At least part of the second insulating member is arranged in a gap between the conductive assembly and the first limiting portion, and the second insulating member seals and insulates part of the conductive assembly.

[0019] Optionally, in some embodiments of the present application, before the second insulating member is arranged in the gap, the second through hole is in communication with the second opening. After the second insulating member is arranged in the gap, the second through hole is isolated from the second opening by the second insulating member.

[0020] Optionally, in some embodiments of the present application, the battery module further comprises a second limiting portion. The second limiting portion is connected to a side of the base portion facing the third member. The second limiting portion comprises a third opening. The conductive assembly is led out from the third opening, the second through hole and the second opening. The second insulating member is at least partially arranged in a gap between the second limiting portion and the conductive assembly, and the second insulating member seals and insulates the conductive assembly located in the second limiting portion.

[0021] Optionally, in some embodiments of the present application, the battery module further comprises a third insulating member. The third insulating member is configured to be arranged in the first limiting portion and the second limiting portion and solidified by a third insulating material. 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 waterproof performance of the conductive assembly. After the third insulating material solidifies to form the third insulating member, the second insulating material is injected into the first limiting portion, and the second insulating material solidifies to form the second insulating member.

[0022] Optionally, in some embodiments of the present application, the battery module comprises a first sealing member. In the first direction, the first sealing member is located between the third member and the second limiting portion, and can isolate the first recess and the third opening, further reducing the entry of the second insulating material into the first recess.

[0023] Optionally, in some embodiments of the present application, the outer surface of the first member has insulating properties, which reduces the risk of short circuit.

[0024] Optionally, in some embodiments of the present application, the first member includes a base and four first sidewalls, and the base and the four first sidewalls enclose the first recess.

[0025] Optionally, in some embodiments of the present application, the four first sidewalls form the first opening away from one end of the base.

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

[0027] Optionally, in some embodiments of the present application, the first through hole is configured to provide the first insulation material to the first recess through the first through hole to form the first insulation member, which facilitates the arrangement of the first insulation member.

[0028] Optionally, in some embodiments of the present application, the second member is a heat dissipation member, and the heat dissipation member includes a first heat dissipation channel, and the first heat dissipation channel is in communication with the outside, which facilitates heat dissipation.

[0029] Optionally, in some embodiments of the present application, the first through hole and the first heat dissipation channel are separated, which reduces interference between the first through hole and the first heat dissipation channel, and facilitates the extension of the external device into the first recess from the first through hole.

[0030] Optionally, in some embodiments of the present application, the first recess is arranged towards the battery cell assembly in a direction opposite to the first direction.

[0031] Another embodiment of the present application provides a battery module, which includes a battery cell assembly, a first member, a first insulation member, and a second member. The battery cell assembly includes a plurality of battery cells, and each battery cell includes a battery cell shell and an electrode terminal, and the electrode terminal is drawn out from the battery cell shell. The battery cell assembly and the first member are arranged along a first direction, and the first member has a first recess, and a portion of each electrode terminal is arranged in the first recess. At least a portion of the first insulation member is arranged in a gap between the electrode terminal and the first member. The second member is provided with a first through hole, and the second member and the first member are arranged along the first direction. The second member includes a top wall and a protrusion, and the protrusion extends from the top wall, and the first through hole penetrates the protrusion. In the first direction, the protrusion extends from the top wall. The first recess includes a first opening towards the second member. In the first direction, the top wall and the first opening have a first space, and at least a portion of the first through hole is located in the first space in a third direction, and the third direction is perpendicular to the first direction.

[0032] The present application arranges a portion of each electrode terminal in the first recess, arranges the first insulation member in the gap between the electrode terminal and the first member, and strengthens the sealing and insulation protection of the battery module. By arranging the first through hole in the protrusion and arranging the first insulation member in the first recess through the first through hole, other channel structures in the battery module can be reduced, and the limitation on the structure of the battery module is reduced.

[0033] Optionally, in some embodiments of the present application, the projection of the first through hole and the projection of the first space overlap along the third direction.

[0034] Optionally, in some embodiments of the present application, along the first direction, the projection of the first through hole along the third direction is between the projection of the top wall along the third direction and the projection of the first recess along the third direction.

[0035] Optionally, in some embodiments of the present application, the convex portion is located outside the first recess, reducing the occupation of the convex portion to the first recess, reducing the length of the external device extending into the first recess, and further reducing the risk of the external device damaging the elements in the first recess.

[0036] Optionally, in some embodiments of the present application, the first through hole is located outside the first recess, facilitating the external device to pass through the first through hole and enter the first recess.

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

[0038] Optionally, in some embodiments of the present application, the first through hole is provided with a first insulating member, and the first through hole can be sealed by the first insulating member, reducing the entry of dust and other impurities into the first recess through the first through hole.

[0039] Optionally, in some embodiments of the present application, along the third direction, the length of the second member is greater than the length of the plurality of stacked battery cells, and the two ends of the second member extend out of the battery cell assembly, facilitating the setting of the convex portion so that the convex portion 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 shell includes a main body portion and a sealing portion, and the electrode assembly is arranged in the main body portion. The sealing portion includes a first sealing portion, and the electrode terminal is connected to the electrode assembly and led out from the first sealing portion. Each first sealing portion is at least partially located in the first recess. The first insulating member covers at least part of each first sealing portion, and the sealing and insulation protection of the first sealing portion are strengthened.

[0041] Optionally, in some embodiments of the present application, the second member and the plurality of battery cells are arranged along the second direction, and along the first direction, the convex portion exceeds the main body portion, reducing the influence of the convex portion on the heat dissipation of the main body portion, facilitating 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 the external device extending into the first through hole and damaging the first sealing portion.

[0043] 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 connects to a side of the third member away from the battery cell housing. The first insulating member covers at least part of the third member, and seals and insulates the third member.

[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 connects to a side of the third member away from the battery cell housing. The first insulating member covers at least part of the third member, and seals and insulates the third member.

[0045] Optionally, in some embodiments of the present application, the electrode terminal, the third member and the first member are connected by the first insulating member.

[0046] Optionally, in some embodiments of the present application, the battery module further comprises a first limiting part. The first member comprises a base part, the first limiting part connects to a side of the base part away from the third member, and the first limiting part comprises a second opening. The first member comprises a second through hole penetrating through the base part. The battery module further comprises a conductive assembly connected to the third member, and the conductive assembly 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 comprises a second insulating member, at least part of the second insulating member is arranged in a gap between the conductive assembly and the first limiting part, and the second insulating member seals and insulates part of the conductive assembly.

[0048] Optionally, in some embodiments of the present application, before the second insulating member is arranged in the gap, the second through hole communicates with the second opening, and after the second insulating member is arranged in the gap, the second through hole is isolated from the second opening by the second insulating member.

[0049] Optionally, in some embodiments of the present application, the battery module further comprises a second limiting part, the second limiting part connects to a side of the base part facing the third member, and the second limiting part comprises a third opening. The conductive assembly is led out from the third opening, the second through hole and the second opening. At least part of the second insulating member is arranged in a gap between the second limiting part and the conductive assembly, and the second insulating member seals and insulates the conductive assembly located in the second limiting part.

[0050] Optionally, in some embodiments of the application, the battery module further comprises a third insulating member configured to be formed by curing the third insulating material after the first and second limiting portions. 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 third insulating material has a viscosity greater than that of the second insulating material, which is conducive to waterproofing the reinforced conductive assembly. After the third insulating member is formed by curing the third insulating material, the second insulating material is poured into the first limiting portion, and the second insulating material is cured to form the second insulating member.

[0051] Optionally, in some embodiments of the application, the battery module comprises a first sealing member located between the third member and the second limiting portion in the first direction, which can isolate the first recess and the third opening, and further reduce the entry of the second insulating material into the first recess.

[0052] Optionally, in some embodiments of the application, the outer surface of the first member has insulating properties, which reduces the risk of short circuit.

[0053] Optionally, in some embodiments of the application, the first member comprises a base and four first side walls, which enclose the first recess.

[0054] Optionally, in some embodiments of the application, the four first side walls have first openings at one end away from the base.

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

[0056] Optionally, in some embodiments of the application, the first through hole is configured to provide the first insulating material to the first recess through the first through hole to form the first insulating member, which is conducive to the arrangement of the first insulating member.

[0057] Optionally, in some embodiments of the application, the second member is a heat dissipation member comprising a first heat dissipation channel, which is in communication with the outside, which is conducive to heat dissipation.

[0058] Optionally, in some embodiments of the application, the first through hole and the first heat dissipation channel are separated, which reduces the interference between the first through hole and the first heat dissipation channel, and facilitates the extension of the external device into the first recess from the first through hole.

[0059] Optionally, in some embodiments of the application, the first recess is arranged towards the cell assembly in a direction opposite to the first direction.

[0060] Another embodiment of the present application provides a battery module, comprising a cell assembly, a first member, a third member, a second limiting part, a conductive assembly and a second insulating part. The cell assembly comprises a plurality of cells, each of which comprises a cell housing and an electrode terminal drawn from the cell housing. The third member comprises a first hole and a second hole, and the electrode terminal passes through the first hole and the second hole. The cell housing and the third member are arranged along a first direction. The first member comprises an outer surface provided with an insulating material, a base, and a second through hole penetrating the base. The base is arranged on a side of the third member away from the cell housing along the first direction. The second limiting part is arranged on a side of the base facing the cell housing and comprises a third opening. The conductive assembly is connected to the cell assembly, and part of the conductive assembly is arranged in the second limiting part. The conductive assembly is drawn from the third opening and the second through hole. The second insulating part is arranged at least partially in a gap between the second limiting part and the conductive assembly.

[0061] The second insulating part is configured to be formed by curing the second insulating material in the gap between the conductive assembly and the second limiting part. The second limiting part can limit the second insulating material from overflowing out of the second limiting part. The insulation and fixation of the conductive assembly 110 are enhanced by the second insulating part 90, which is conducive to further improving the safety performance of the battery module 100.

[0062] Embodiments of the present application provide a battery pack, comprising the battery module in any of the above embodiments. The battery pack comprises a shell and a top cover, and the shell and the top cover form a receiving space. The battery module is located in the receiving space, thereby enhancing the sealing and insulation protection of the battery pack.

[0063] Optionally, in some embodiments of the present application, the battery pack further comprises a second circuit board electrically connected to the cell assembly.

[0064] Optionally, in some embodiments of the present application, the cell assembly and the top cover are arranged along a first direction. Along the first direction, the second member does not protrude beyond the shell.

[0065] Optionally, in some embodiments of the present application, the battery pack further comprises a first fastener. The shell is provided with a first fixing hole, and the first fastener is arranged in the first fixing hole and the first through hole. This reduces the entry of dust and other impurities into the first recess through the first through hole, and also serves to connect the second member to the front wall of the shell.

[0066] Optionally, in some embodiments of the present application, the battery pack comprises a sealing member arranged in the first through hole, thereby reducing the entry of dust and other impurities into the first recess through the first through hole.

[0067] An embodiment of the present application also provides a power consumption device comprising the battery pack in any of the above embodiments.

[0068] The embodiment of the present application further provides a manufacturing method of the battery module in any one of the above embodiments, comprising the following steps: connecting the cell assembly, the second component and the first component. The battery module is inverted, the first insulating material is injected into the first recess through the first through hole, and the first insulating material is solidified to form the first insulating piece.

[0069] The present application sets the first insulating piece through the first through hole to the first recess, and the first insulating material is injected into the first recess. BRIEF DESCRIPTION OF DRAWINGS

[0070] Figure 1 Part structure schematic diagrams of the battery module in some embodiments are shown.

[0071] Figure 2 Part structure schematic diagrams of the battery module in some embodiments are shown.

[0072] Figure 3 Part structure schematic diagrams of the battery module in some embodiments are shown. Figure 1 Part structure schematic diagrams of the battery module in some embodiments are shown.

[0073] Figure 4 Structure schematic diagrams of the cell in some embodiments are shown.

[0074] Figure 5 Part structure schematic diagrams of the cell in some embodiments are shown.

[0075] Figure 6 Part structure schematic diagrams of the cell and the heat conduction piece in some embodiments are shown.

[0076] Figure 7 Structure schematic diagrams of the cell and the heat conduction piece in some embodiments are shown.

[0077] Figure 8 Part structure schematic diagrams of the battery module in some embodiments are shown.

[0078] Figure 9 Structure schematic diagrams of the third component and the conductive assembly in some embodiments are shown.

[0079] Figure 10 Part structure schematic diagrams of the battery module in some embodiments are shown. Figure 1 Part structure schematic diagrams of the battery module in some embodiments are shown.

[0080] Figure 11 Part structure schematic diagrams of the battery module in some embodiments are shown. Figure 10 Enlarged schematic diagrams of B in some embodiments are shown.

[0081] Figure 12 Part structure schematic diagrams of the battery module in some embodiments are shown. Figure 2 Part structure schematic diagrams of the battery module in some embodiments are shown.

[0082] Figure 13 A cross-sectional view of a part of the battery module is shown. Figure 2

[0083] Figure 14 A cross-sectional view of a part of the battery module is shown. Figure 13

[0084] Figure 15 A cross-sectional view of a part of the battery module is shown. Figure 2

[0085] Figure 16 A cross-sectional view of a part of the battery module is shown.

[0086] Figure 17 A cross-sectional view of a part of the battery module is shown. Figure 16

[0087] Figure 18 A cross-sectional view of a part of the battery module is shown.

[0088] Figure 19 A cross-sectional view of a part of the battery module is shown. Figure 17

[0089] A cross-sectional view of a part of the battery module is shown. Figure 20 Figure 19

[0090] Figure 21 A cross-sectional view of a part of the battery module is shown.

[0091] Figure 22 A cross-sectional view of a part of the battery module is shown.

[0092] Figure 23 A cross-sectional view of a part of the battery module is shown.

[0093] Figure 24 A cross-sectional view of a part of the battery module is shown.

[0094] Figure 25 A cross-sectional view of a part of the battery module is shown. Figure 23

[0095] A cross-sectional view of a part of the battery module is shown. Figure 26 A cross-sectional view of a part of the battery module is shown.​​​​​​

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

[0097] Figure 28 A exploded schematic of a battery pack in some embodiments is shown.

[0098] Figure 29 A structural schematic of a portion of a battery pack in some embodiments is shown.

[0099] Figure 30 A structural schematic of a portion of a battery pack from another perspective in some embodiments is shown.

[0100] Figure 31 A structural schematic of a portion of a housing in some embodiments is shown.

[0101] Figure 32 A flow schematic of a manufacturing direction of a battery module in some embodiments is shown.

[0102] Figure 33 A structural schematic of an electrical device in some embodiments is shown.

[0103] Explanation of main element symbols:

[0104] Battery module 100

[0105] First fastener 100a

[0106] Second heat-conductive adhesive 100b

[0107] Insulator 100c

[0108] Battery cell assembly 20

[0109] Battery cell 21

[0110] Battery cell housing 211

[0111] Main body portion 211a

[0112] First housing 2111

[0113] First housing recess 2111a

[0114] Second housing 2112

[0115] Second housing recess 2112a

[0116] First extension edge 2113

[0117] Second extension edge 2114

[0118] Main body left wall 2101

[0119] Main body 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 portion 2115

[0126] Second sealing portion 2116

[0127] Electrode terminal 212

[0128] Connection region 212a

[0129] Electrode assembly 213

[0130] First member 30

[0131] First recess 301

[0132] First opening 301a

[0133] First space 301b

[0134] Second opening 302

[0135] Third opening 303

[0136] Fourth opening 304

[0137] Fifth opening 305

[0138] Sixth opening 306

[0139] Seventh opening 307

[0140] Third gap 30a

[0141] Base 31

[0142] Connecting protrusion 311

[0143] Second through-hole 312

[0144] Third through-hole 313

[0145] Fourth through-hole 314

[0146] First side wall 32

[0147] First limiting portion 33

[0148] First connecting wall 331

[0149] Second connecting wall 332

[0150] Third connecting wall 333

[0151] Fourth connecting wall 334

[0152] Second limiting portion 34

[0153] Third limiting portion 35

[0154] Fourth limiting portion 36

[0155] Fifth limiting portion 37

[0156] Sixth limiting portion 38

[0157] Second member 40

[0158] First heat dissipation channel 40a

[0159] Protrusion 40b

[0160] First through hole 401

[0161] Front wall 41

[0162] Second opening 411

[0163] Rear wall 42

[0164] Fourth opening 421

[0165] Top wall 43

[0166] Protruding portion 44

[0167] Bottom wall 45

[0168] Left wall 46

[0169] Right wall 47

[0170] First insulating member 50

[0171] Thermally conductive member 60

[0172] First portion 61

[0173] Second portion 62

[0174] First gap 62a

[0175] Third portion 63

[0176] Second gap 63a

[0177] Third member 70

[0178] First hole 71

[0179] Second hole 72

[0180] First conductive sheet 73

[0181] Second conductive sheet 74

[0182] Third hole 75

[0183] Fourth hole 76

[0184] Second insulating member 90

[0185] Fourth insulating member 91

[0186] Fifth insulating member 92

[0187] Conductive assembly 110

[0188] First connecting portion 110a

[0189] Conductive wire 110b

[0190] First segment 1101

[0191] First sub-segment 1101a

[0192] Second sub-segment 1101b

[0193] Second segment 1102

[0194] Second connecting portion 110c

[0195] First electrical connecting member 120

[0196] First conductive portion 120a

[0197] First insulating portion 120b

[0198] Second electrical connecting member 130

[0199] Second conductive portion 130a

[0200] Second insulating portion 130b

[0201] First sealing member 140

[0202] Battery pack 200

[0203] Second circuit board 210

[0204] First fixing member 220

[0205] First elastic member 230

[0206] 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] First aperture 111

[0213] First fixing hole 112

[0214] Housing rear wall 12

[0215] Third aperture 121

[0216] Housing left wall 13

[0217] First fin 131

[0218] Housing right wall 14

[0219] Second fin 141

[0220] Housing bottom wall 15

[0221] Top cover 16

[0222] Third fin 161

[0223] Support 17

[0224] First direction X

[0225] Second direction Y

[0226] Third direction Z

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

[0228] The following detailed description is exemplary and not limiting, and is intended to provide a basic understanding of the application, and is not intended to confirm key or decisive elements of the application or limit the scope of protection. As long as there is no structural conflict, the 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 a middle component can be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or a middle component can be present.

[0230] It is understood that the term "perpendicular, equal" is used to describe an ideal state between two components. In actual production or use, there can be a state close to or equal to the state between the two components. For example, in conjunction with numerical description, perpendicular can refer to the angle between two straight lines within the range of 90°±10°, perpendicular can also refer to the dihedral angle between two planes within the range of 90°±10°, and perpendicular can also refer to the angle between a straight line and a plane within the range of 90°±10°. The two components described as "perpendicular" can not be absolute straight lines or planes, but can be approximately straight lines or planes, and as a whole, the overall extension direction is considered to be a "straight line" or a "plane".

[0231] The terms "perpendicular", "horizontal", "left", "right", "top", "bottom", "front", "back", and similar expressions used herein are for illustrative purposes only and are not intended to limit the application.

[0232] The term "parallel" is used to describe an ideal state between two components. In actual production or use, there can be a state close to or equal to the state between the two components. For example, in conjunction with numerical description, parallel can refer to the angle between two straight lines within the range of 180°±10°, parallel can also refer to the dihedral angle between two planes within the range of 180°±10°, and parallel can also refer to the angle between a straight line and a plane within the range of 180°±10°. The two components described as "parallel" can not be absolute straight lines or planes, but can be approximately straight lines or planes, and as a whole, the overall extension direction is considered to be a "straight line" or a "plane".

[0233] Unless otherwise defined, the term "a plurality" herein, when used to describe the number of components, specifically refers to two or more of the components.

[0234] In the first direction X, including the first direction X and in the opposite direction of the first direction X, in the second direction Y, including the second direction Y and in the opposite direction of the second direction Y, in the third direction Z, including the third direction Z and in the opposite direction of the third direction Z.

[0235] Please refer to Figures 1 to 3 and Figures 17 to 22In an embodiment of the present application, a battery module 100 is provided, which includes a cell assembly 20, a first member 30, a second member 40, and a first insulation member 50. The cell assembly 20 includes a plurality of cells 21, each of which includes a cell case 211 and an electrode terminal 212 that is drawn out from the cell case 211. The cell cases 211 and the first member 30 are arranged along a first direction X, and the first member 30 has a first recess 301 in which a portion of each electrode terminal 212 is disposed. At least a portion of the first insulation member 50 is disposed in a gap between the electrode terminal 212 and the first member 30. The second member 40 is provided with a first through hole 401, and the second member 40 and the first member 30 are arranged along the first direction X. The first recess 301 includes a first opening 301a facing the second member 40, and along the first direction X, a projection of the first through hole 401 and a projection of the first opening 301a overlap.

[0236] In the present application, a portion of each electrode terminal 212 is disposed in the first recess 301, and the first insulation member 50 is disposed in the gap between the electrode terminal 212 and the first member 30, so that the sealing and insulation protection of the electrode terminal 212 are enhanced, and the sealing and insulation protection of the battery module 100 are further enhanced.

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

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

[0239] In some embodiments, the first through hole 401 is configured to provide the first insulation material to the first recess 301 through the first through hole 401, so as to form the first insulation member 50.

[0240] Please refer to Figure 3 , Figure 4 and Figure 8 , each cell 21 includes an electrode assembly 213 disposed in the cell case 211, and the electrode terminal 212 is connected to the cell case 211 and drawn out from the cell case 211. Adjacent electrode terminals 212 are connected to form a connection region 212a.

[0241] In some embodiments, the battery cell 21 comprises a pouch battery cell. The battery cell housing 211 comprises a main body portion 211a and a sealing portion 211b. The main body portion 211a is provided with an accommodation space. The battery cell housing 211 comprises a first housing 2111 and a second housing 2112. The first housing 2111 is provided with a first housing recess 2111a. The second housing 2112 is provided with a second housing recess 2112a. The first housing 2111 is connected to the second housing 2112 and forms the accommodation space. The electrode assembly 213 is partially arranged in the first housing recess 2111a and partially arranged in the second housing recess 2112a. The first housing 2111 is outwardly extended along a circumferential side thereof to form a first extension edge 2113. The second housing 2112 is outwardly extended along a circumferential side thereof 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 are overlapped and sealingly connected to form the sealing portion 211b.

[0242] In some embodiments, the main body portion 211a is provided with an accommodation space. The main body portion 211a comprises a first housing 2111 and a second housing 2112. The first housing 2111 is provided with a first housing recess 2111a. The second housing 2112 is flat. The first housing 2111 is connected to the second housing 2112 and forms the accommodation space. The electrode assembly 213 is arranged in the first housing recess 2111a.

[0243] In some embodiments, the sealing portion 211b comprises a first sealing portion 2115 and two second sealing portions 2116. The first sealing portion 2115 is connected to the two second sealing portions 2116. The two second sealing portions 2116 are arranged along a 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 portion 211a comprises 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 of the two second sealing portions 2116 is connected to the main body left wall 2101. The other of the two second sealing portions 2116 is connected to the main body right wall 2102. The first sealing portion 2115 is connected to the main body top wall 2104.

[0245] In some embodiments, the second member 40 is a heat dissipation member. The heat dissipation member comprises a first heat dissipation channel 40a. The first heat dissipation channel 40a is in communication with the outside, which is conducive to dissipating heat from the battery cell assembly 20.

[0246] In some embodiments, the second member 40 comprises a front wall 41 and a rear wall 42 arranged along a third direction Z. The first heat dissipation channel 40a penetrates through the front wall 41 and the rear wall 42 along the third direction Z. The first direction, the second direction, and the third direction are perpendicular to each other.

[0247] In some embodiments, the battery module 100 can utilize a cooling medium to pass through the first heat dissipation channel 40a to take away heat. Optionally, the cooling medium includes air and liquid. Optionally, the liquid can be liquid from an external environment, such as rain.

[0248] Taking air as an example of the cooling medium, in some embodiments, the battery module 100 can be used on a device that is static during use. When the battery module 100 is static, natural wind or an external air cooling device, such as a fan, can be utilized for heat dissipation. Optionally, the battery module 100 can be used on a device that is dynamic during use, such as a drone, an electric moped, etc. Since the device is moving, the air flow speed is faster, which can achieve rapid heat dissipation of the battery module 100.

[0249] It can be understood that, according to 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 is used as an air inlet, the side where the rear wall 42 is located is used as an air outlet. When the front wall 41 is used as an air outlet, the rear wall 42 is used as an air inlet.

[0250] Please refer to 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. The second group of battery cells 202 includes at least two battery cells 21 stacked along the 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. The second member 40 is arranged between the first group of battery cells 201 and the second group of battery cells 202 to dissipate heat from the first group of battery cells 201 and the second group of battery cells 202.

[0251] Please refer to Figures 16 to 23 In some embodiments, the second member 40 includes a top wall 43 and a protrusion 44. The top wall 43 connects the front wall 41 and the rear wall 42. The protrusion 44 extends from the top wall 43 along a first direction X. A first through hole 401 penetrates the protrusion 44 along the third direction Z. A first space 301b is present between the top wall 43 and the first opening 301a along the first direction X. The first through hole 401 communicates with the first recess 301 through the first space 301b. When the first insulating material is injected, the external device extends from the first through hole 401. The first space 301b can provide space for the external device to extend, facilitate the extension of the external device, and reduce the risk of damage to the elements in the first recess 301 by the external device. The first insulating material can enter the first recess 301 through the first space 301b.

[0252] Please refer to Figures 16 to 23In some embodiments, the protrusion 44 is located outside the first recess 301, reducing the occupation of the protrusion 44 in the first recess 301, reducing the length of the external device extending into the first recess 301, and further reducing the risk of the external device damaging the elements in the first recess 301.

[0253] In some embodiments, the first through hole 401 is located outside the first recess 301, facilitating the external device to pass through the first through hole 401 and enter the first recess 301.

[0254] In some embodiments, the battery module 100 includes a waterproof and breathable valve (not shown), which seals the first through hole 401. The waterproof and breathable valve can prevent external impurities from entering the first recess 301 and can be used to exhaust gas in the battery module 100.

[0255] In some embodiments, the first through hole 401 is separated from the first insulating member 50, facilitating the connection of the first fastener 100a to the first through hole 401. In some embodiments, the first through hole 401 is provided with the first insulating member 50, which can seal the first through hole 401 and reduce the entry of dust and other impurities through the first through hole 401 into the first recess 301.

[0256] In some embodiments, in the third direction Z, the length of the second member 40 is greater than the length of the plurality of stacked battery cells 21, and the two ends of the second member 40 extend out of the battery cell assembly 20, facilitating the setting of 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 exceeds the main body portion 211a, reducing the influence of the protrusion 44 on the heat dissipation of the main body portion 211a, and facilitating heat dissipation.

[0258] In some embodiments, the second member 40 includes two protrusions 44, which are spaced apart on the top wall 43 along the third direction Z. The first insulating material can be injected through the first through hole 401 provided on the two protrusions 44, which facilitates the improvement of 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 the external device extending from 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 between the first sealing part 2115 of the first group of battery cells 201 and the first sealing part 2115 of the second group of battery cells 202. Along the third direction Z, the projection of the protrusion 44 is apart from the first sealing part 2115 of the first group of battery cells 201. Along the third direction Z, the projection of the protrusion 44 is apart from the projection of the first sealing part 2115 of the second group of battery cells 202, which can reduce the risk of the external device inserted from the first through hole 401 damaging the first sealing part 2115.

[0261] In some embodiments, the first through hole 401 is apart from the first heat dissipation channel 40a, which reduces the interference between the first through hole 401 and the first heat dissipation channel 40a, and facilitates the external device to be inserted into the first recess 301 from 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] Please refer to Figures 3 to 7 , Figure 29 and Figure 30 In some embodiments, the battery module 100 includes a heat conduction member 60. The heat conduction member 60 includes a first part 61 and a second part 62. Along the third direction Z, the main body part 211a includes a main body front wall 2105 and a main body rear wall 2106, the first part 61 is connected to the main body front wall 2105 or the main body rear wall 2106, and the second part 62 is connected to the first part 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 part 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 left wall 46 through the second part 62, and is dissipated through the first heat dissipation channel 40a.

[0264] In some embodiments, the second part 62 is in contact with the left wall 46, which is conducive to heat dissipation.

[0265] In some embodiments, the battery module 100 includes a first heat conduction adhesive (not shown in the figure), and the second part 62 is connected to the left wall 46 through the first heat conduction adhesive, which is further conducive to heat dissipation.

[0266] In some embodiments, the heat conduction member 60 includes a first part 61 and two second parts 62, and the two second parts 62 are connected to the two sides of the first part 61 along the second direction Y. The first part 61 is connected to the main body front wall 2105 or the main body rear wall 2106. Along the second direction Y, one of the second parts 62 is arranged on one side of the main body left wall 2101, and the other second part 62 is arranged 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 comprises a third portion 63 connected to the first portion 61. The second portion 62 and the bottom wall 2103 of the main body are arranged along the first direction X. The heat of the front wall 2105 or the rear wall 2106 of the main body is dissipated through the third portion 63.

[0268] In some embodiments, along the third direction Z, each main body part 211a is provided with two heat-conducting members 60. One of the two heat-conducting members 60 has the first portion 61 connected to the front wall 2105 of the main body, and the other heat-conducting member 60 has the first portion 61 connected to the rear wall 2106 of the main body, so that the front wall 2105 and the rear wall 2106 of each main body part 211a can be dissipated, which is conducive to improving the heat dissipation efficiency.

[0269] In some embodiments, the battery module 100 comprises a second heat-conducting adhesive 100b, and the first portion 61 is connected to the front wall 2105 and the rear wall 2106 of the main body through the second heat-conducting adhesive 100b, which is conducive to heat dissipation.

[0270] In some embodiments, the battery module 100 comprises a third heat-conducting adhesive (not shown in the figure), and the third portion 63 is connected to the bottom wall 2103 of the main body through the third heat-conducting adhesive, which is conducive to heat dissipation.

[0271] In some embodiments, the battery module 100 comprises an insulator 100c arranged between the third portion 63 and the bottom wall 2103 of the main body.

[0272] In some embodiments, along the second direction Y, between the two second portions 62 of the heat-conducting members 60 arranged on both sides of the same main body part 211a along the third direction Z, there is a first gap 62a (as shown in Figure 30 , which reduces the possibility of stacking of the two second portions 62, improves the flatness of the second portion 62, facilitates the connection of the left wall 46, ensures the heat dissipation area, facilitates assembly, and is conducive to production.

[0273] In some embodiments, along the first direction X, between the two third portions 63 of the heat-conducting members 60 arranged on both sides of the same main body part 211a along the third direction Z, there is a second gap 63a (as shown in Figure 29 , which reduces the possibility of stacking of the two third portions 63, improves the flatness of the third portion 63, ensures the heat dissipation area, facilitates assembly, and is conducive to production.

[0274] Please refer to Figure 6 and Figure 7In some embodiments, when the electric cell 21 is not connected with the heat-conducting member 60, the second part 62 of the heat-conducting member 60 is configured to be arranged away from the first part 61, so that the second part 62 is arranged obliquely relative to the first part 61, and the included angle between the second part 62 and the first part 61 is an obtuse angle a. When the electric cell 21 is placed on the heat-conducting member 60, the electric cell 21 can slide along the inclined surface of the second part 62 and be connected to the first part 61, which can reduce the risk of scratching the electric cell shell 211 by the second part 62 and facilitate the installation of the electric cell 21.

[0275] Please refer to Figure 3 、 Figure 8 、 Figure 9 、 Figure 18 and Figure 20 In some embodiments, the battery module 100 further comprises a third member 70. In the first direction X, the protrusions 44 and the third member 70 are arranged with a spacing between the protrusions 44 and the third member 70, which reduces the influence of external equipment extending into the first through hole 401 on the third member 70.

[0276] In some embodiments, the electrode terminal 212 penetrates through the third member 70 and is connected to the side of the third member 70 away from the electric cell shell 211, and the first insulating member 50 covers at least part of the third member 70 to insulate and protect the third member 70.

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

[0278] In some embodiments, the first insulating member 50 covers at least part of each first sealing part 2115 and the part of the electrode terminal 212 extending out of the electric cell shell 211, which strengthens the protection of the first sealing part 2115 and improves the heat dissipation of the electric cell shell 211.

[0279] In some embodiments, the third member 70 is provided with a first hole 71 and a second hole 72 arranged in the third direction Z. The first hole 71 and the second hole 72 are arranged extending in the second direction Y. The electrode terminal 212 of one adjacent electric cell 21 penetrates through the first hole 71, and the electrode terminal 212 of another electric cell 21 penetrates through the second hole 72, so that the two electrode terminals are connected in a stacked manner and form a connection area 212a, the connection area 212a is connected to the third member 70, and the connection area 212a is located between the third member 70 and the first member 30.

[0280] In some embodiments, the third member 70 comprises a plurality of first conductive pieces 73, the first conductive pieces 73 are connected to the third member 70, the electrode terminals 212 of the adjacent battery cells 21 pass through the first holes 71, the electrode terminals 212 of the other battery cells 21 pass through the second holes 72, and the two electrode terminals are welded on the first conductive pieces 73 in a stacked manner. The welding includes laser welding, ultrasonic welding, etc. In other embodiments, the connecting areas 212a and the first conductive pieces 73 can also be connected by other connecting methods such as conductive glue.

[0281] In an embodiment, the first conductive pieces 73 are configured to collect electrical signal information of the battery cells, which includes but is not limited to voltage, current, temperature, and resistance.

[0282] In an embodiment, the third member 70 is further provided with second conductive pieces 74. The second conductive pieces 74 are connected to the electrode terminals 212 of the first group of battery cells 201 and the electrode terminals 212 of the second group of battery cells 202, for transmitting current from the first group of battery cells 201 to the second group of battery cells 202, to realize series connection or 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 is further provided with a third hole 75, which is located between the first hole 71 and the second hole 72 along the third direction Z and viewed along the direction X' opposite to the first direction X. 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, which is located at a middle position of the third member 70 along the second direction Y. The battery module 100 further comprises a conductive assembly 110. The conductive assembly 110 comprises a first connecting portion 110a, a wire 110b, and a second connecting portion 110c, the first connecting portion 110a is connected to the third member 70 through the 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 assembly 110 is configured to transmit electrical signal information of the battery cells 21 and / or transmit power of the battery cell assembly 20, which includes but is not limited to voltage, current, temperature, and resistance. In this embodiment, the conductive assembly 110 is configured to transmit electrical signal information of the battery cells 21 as an example.

[0286] Optionally, the third member 70 comprises a first circuit board, and the first circuit board comprises a flexible printed circuit (FPC). Optionally, the first circuit board comprises a printed circuit board (PCB).

[0287] Referring to Figures 1 to 3 and Figure 8 In some embodiments, the battery module 100 further comprises a first electrical connector 120 and a second electrical connector 130, which are connected to external devices to realize 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 comprises a copper bar, and the second electrical connector 130 comprises a copper bar.

[0288] In some embodiments, the first electrical connector 120 comprises a first conductive part 120a and a first insulating part 120b, the first conductive part 120a extends from both ends of the first insulating part 120b, one end of the first conductive part 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 part 120a overlap, which can reduce the bending of the electrode terminal 212, simplify the assembly process, facilitate the welding connection of the electrode terminal 212 to the first conductive sheet 73, and facilitate the welding connection of the first conductive part 120a to the first conductive sheet 73.

[0290] In some embodiments, the second electrical connector 130 comprises a second conductive part 130a and a second insulating part 130b, the second conductive part 130a extends from both ends of the second insulating part 130b, one end of the second conductive part 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 the other first conductive sheet 73, the projection of the electrode terminal 212, and the projection of the second conductive part 130a overlap, which can reduce the bending of the electrode terminal 212, simplify the assembly process, facilitate the welding connection of the electrode terminal 212 to the other first conductive sheet 73, and facilitate the welding connection of the second conductive part 130a to the other first conductive sheet 73.

[0292] Referring to Figures 1 to 3 , Figure 21 and Figure 23 In some embodiments, the outer surface of the first member 30 is insulating. Optionally, the first member 30 is made of insulating material. Optionally, the first member 30 is made of metal material and insulating material, and the insulating material can cover the outer surface of the metal material.

[0293] In some embodiments, the first member 30 includes a base 31 disposed on a side of the third member 70 away from the cell housing 211. The base 31 is provided with a connecting protrusion 311 on a side thereof facing the third member 70, the connecting protrusion 311 connecting the third member 70 such that the third member 70 and the base 31 have a third gap 30a therebetween, the connecting region 212a being located within the third gap 30a, facilitating the first insulating material flowing into the third gap 30a to cover and insulate and protect the connecting region 212a, and facilitating bonding of the third member 70 to the base 31.

[0294] In some embodiments, the first member 30 includes a first side wall 32 extending from an edge of the base 31, the first side wall 32 and the base 31 forming a first recess 301, the first recess 301 being disposed towards the cell assembly 20 in a direction opposite to the first direction X. Optionally, the first member 30 includes four first side walls 32, the four first side walls 32 and the base 31 enclosing the first recess 301.

[0295] In some embodiments, the four first side walls 32 are formed with a first opening 301a at an end thereof away from the base 31.

[0296] In some embodiments, along the second direction Y, a projection of the third member 70 is located within a projection of the first recess 301, the third member 70 being insulated and protected.

[0297] In some embodiments, along the second direction Y, a projection of the electrode terminal 212 is located within a projection of the first side wall 32, the electrode terminal 212 being insulated and protected. Optionally, a projection of the first sealing portion 2115 is located within a projection of the first side wall 32, the electrode terminal 212 being further insulated and protected.

[0298] Please refer to Figures 1 to 3 , Figures 10 to 12 and Figure 20 In some embodiments, the battery module 100 includes a first limiting portion 33 connected to a side of the base 31 away from the third member 70, the first limiting portion 33 including a second opening 302.

[0299] In some embodiments, the first member 30 includes a second through hole 312 penetrating the base 31 along the first direction X. Along the first direction X, the second through hole 312 and the second opening 302 are in communication before the first insulating material is poured. The conductive assembly 110 is led out from the second through hole 312 and the second opening 302.

[0300] In some embodiments, the first connecting portion 110a connects the third member 70 through the second through hole 312, and the conductive wire 110b is led out from the second opening 302 and the second through hole 312.

[0301] In some embodiments, the battery module 100 comprises a second insulating member 90, at least a portion of the second insulating member 90 is disposed in the gap between the electrically conductive assembly 110 and the first limiting portion 33. The second insulating member 90 is configured to be formed by curing the second insulating material after being disposed in the gap between the electrically conductive assembly 110 and the first limiting portion 33.

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

[0303] In some embodiments, before the second insulating material is injected, the second through hole 312 is in communication with the second opening 302. After the second insulating material is injected, 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 in communication with the second opening 302.

[0304] In some embodiments, the battery module 100 comprises a second limiting portion 34, along the first direction X, the projection of the second through hole 312 is located in the projection of the second limiting portion 34. The second limiting portion 34 is connected to the side of the base portion 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 entering the first recess 301. The second limiting portion 34 comprises a third opening 303. The electrically conductive assembly 110 is led out from the third opening 303, the second through hole 312 and the second opening 302.

[0305] Before the second insulating material is injected, the second through hole 312 is in communication with the third opening 303. After the second insulating material is injected, 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 in communication with the third opening 303.

[0306] Before the first insulating material is injected, the second insulating material is injected first, so that the third opening 303 is no longer communicated with the second through hole 312, and the first insulating material is reduced to enter 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 assembly 110 and the gap between the second limiting portion 34 and the conductive assembly 110. Optionally, the second insulating member 90 covers the connection between the first connecting portion 110a of the second limiting portion 34 and the third member 70, insulates and protects the connection between the first connecting portion 110a of the second limiting portion 34 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 conductive wire 110b. The second insulating member 90 is arranged in the gap between adjacent conductive wires 110b.

[0307] In some embodiments, the battery module 100 includes the first limiting portion 33 and the second limiting portion 34, and before the second insulating material is injected, the third opening 303, the second through hole 312 and the second opening 302 are communicated with each other. The second insulating member 90 is arranged in 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 communicated with each other.

[0308] In some embodiments, the battery module 100 includes the second limiting portion 34, and before the second insulating material is injected, the third opening 303 and the second through hole 312 are communicated with each other. The second insulating member 90 is arranged in 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 communicated with each other. The second limiting portion 34 can limit the second insulating material from overflowing out of the second limiting portion 34.

[0309] In some embodiments, in the first direction X, the projection of the first limiting portion 33 and the projection of the second limiting portion 34 overlap. The first limiting portion 33 and the second limiting portion 34 can be any structure surrounding the first connecting portion 110a and the conductive 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, a heterogeneous cylindrical structure, etc. The regular prism structure can be a triangular prism, a quadrangular prism, a pentagonal prism, etc. The present application takes the first limiting portion 33 as a quadrangular prism as an example for description.

[0310] In some embodiments, the first limiting part 33 comprises 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 limiting part 33. The first connecting wall 331, the second connecting wall 332, the third connecting wall 333 and the fourth connecting wall 334 are connected to the base 31. When viewed in the 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 part 110a and the wire 110b located in the second opening 302.

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

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

[0313] In some embodiments, the battery module 100 comprises a first sealing member 140, which is arranged between the third member 70 and the second limiting part 34, and connects the third member 70 and the second limiting part 34, so as to further isolate the first recess 301 and the third opening 303, and further reduce the second insulating material entering the first recess 301. Optionally, the first sealing member 140 comprises an elastic member that can be compressed, such as foam, such as a silicone pad.

[0314] In some embodiments, when the second insulating material is injected, the conductive assembly 110 is first straightened so that the conductive assembly 110 is substantially perpendicular to the third member 70, and then the second insulating material is injected into the first limiting part 33 and the second limiting part 34. The second insulating material is fixed to form a second insulating member.

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

[0316] In some embodiments, the wire 110b comprises a first segment 1101 arranged in the first limiting part 33 and a second segment 1102 extending from the first limiting part 33. The first segment 1101 comprises a first section 1101a and a second section 1101b, and the first section 1101a connects the first connecting part 110a and the second section 1101b.

[0317] The battery module 100 further comprises a third insulation member configured to be formed by curing a third insulation material after being arranged at the first limiting portion 33 and the second limiting portion 34. The third insulation 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 third insulation material has a viscosity greater than that of the second insulation material, which is conducive to waterproofing of the reinforced conductive assembly 110. After the third insulation material is cured to form the third insulation member, the second insulation material is poured into the first limiting portion 33, and the second insulation material is cured to form the second insulation material.

[0318] Referring to Figures 1 to 3 , Figure 13 , Figure 14 In some embodiments, the battery module 100 comprises a third limiting portion 35 connected to the base 31 on a side facing away from the third member 70, and the third limiting portion 35 comprises a fourth opening 304. The first member 30 comprises a third through hole 313 extending through the base 31 along the first direction X. The first electrical connection 120 extends 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 comprises a fourth insulation member 91. The fourth insulation member 91 is configured to be formed by curing a fourth insulation material after being arranged at the third limiting portion 35, and at least a portion of the fourth insulation member 91 is arranged in a gap between the first electrical connection 120 and the third limiting portion 35. The fourth insulation 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. 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 insulation 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 them.

[0321] Optionally, the projection of the first insulating part 120b is located within the projection of the third limiting part 35. The third limiting part 35 insulates and protects the first conductive part 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 part 120b located within the third limiting part 35. The fourth insulating member 91 covers the first conductive part 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 part 120b located within the third limiting part 35, to further insulate and protect.

[0322] In some embodiments, before the fourth insulating material is injected, the third through hole 313 is in communication with the fourth opening 304. After the fourth insulating material is injected, the fourth insulating member 91 fills the fourth opening 304 of the third limiting part 35, so that the third through hole 313 is no longer in communication with the fourth opening 304.

[0323] In some embodiments, the battery module 100 includes a fourth limiting part 36. In the first direction X, the projection of the third through hole 313 is located within the projection of the fourth limiting part 36. The fourth limiting part 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 part 36 includes a fifth opening 305. The first electrical connection 120 is led out from the fifth opening 305, the third through hole 313, and the fourth opening 304.

[0324] Before the fourth insulating material is injected, the third through hole 313 is in communication with the fourth opening 304. After the fourth insulating material is injected, the fourth insulating member 91 fills the fifth opening 305 of the fourth limiting part 36, so that the third through hole 313 is no longer in communication with the fifth opening 305.

[0325] Before the first insulating material is injected, the fourth insulating material is injected first, so that the fifth opening 305 is no longer in communication with the third through hole 313, and the first insulating material is reduced from entering the fourth limiting part 36 and the third limiting part 35. The fourth insulating member 91 is arranged in the fourth limiting part 36 through the third through hole 313. The fourth insulating member 91 covers the first conductive part 120a, the electrode terminal 212, and the first conductive sheet 73 located within the fourth limiting part 36, to further insulate and protect, and reduce the risk of short circuit.

[0326] In some embodiments, the battery module 100 includes the third limiting part 35 and the fourth limiting part 36. Before the fourth insulating material is injected, the fourth opening 304, the third through hole 313, and the fifth opening 305 are in communication with each other. The fourth insulating member 91 is arranged in 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 in communication with each other.

[0327] In some embodiments, the projection of the third limiting part 35 and the projection of the fourth limiting part 36 overlap along the first direction X.

[0328] In some embodiments, the third limiting part 35 and the fourth limiting part 36 have substantially the same structure as the first limiting part 33 and the second limiting part 34, which will not be repeated here.

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

[0330] In some embodiments, the third limiting part 35 and the fourth limiting part 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] In some embodiments, the battery module 100 includes a fifth limiting part 37 connected to the base 31 away from the third member 70, the fifth limiting part 37 includes a sixth opening 306. The base 31 has a fourth through hole 314 penetrating the base 31 along the first direction X. The second electric connecting piece 130 is led out from the fourth through hole 314 and the sixth opening 306. Figures 1 to 3 Figure 15 Optionally, along the third direction Z, the projection of the second conductive part 130a is located within the projection of the fifth limiting part 37. The second conductive part 130a is insulated and protected by the fifth limiting part 37. The battery module 100 includes a fifth insulating piece 92. The fifth insulating piece 92 is configured to be formed by setting a fifth insulating material at the fifth limiting part 37 and solidifying, at least part of the fifth insulating piece 92 is set in the gap between the second electric connecting piece 130 and the fifth limiting part 37, and the fifth insulating piece 92 covers the second conductive part 130a to further insulate and protect.

[0333] Optionally, along the third direction Z, the projection of the second conductive part 130a, the projection of the part of the electrode terminal 212 extending out of the fourth through hole 314, and the projection of the part of the first conductive sheet 73 extending out of the fourth through hole 314 are located within the projection of the fifth limiting part 37, and the second conductive part 130a, the electrode terminal 212, and the first conductive sheet 73 are further insulated and protected by the fifth limiting part 37. The fifth insulating piece 92 covers the second conductive part 130a, the part of the electrode terminal 212 extending out of the fourth through hole 314, and the part of the first conductive sheet 73 extending out of the fourth through hole 314 to further insulate and protect.

[0334]

[0335] ​​Optionally, the projection of the second insulating part 130b is located within the projection of the fifth limiting part 37. The fifth limiting part 37 insulates and protects the second conductive part 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 part 130b located within the fifth limiting part 37. The fifth insulating member 92 covers the second conductive part 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 part 130b located within the fifth limiting part 37, to further insulate and protect.

[0336] In some embodiments, before the fifth insulating material is injected, the fourth through hole 314 is in communication with the sixth opening 306. After the fifth insulating material is injected, the fifth insulating member 92 fills the sixth opening 306, so that the fourth through hole 314 is no longer in communication with the sixth opening 306.

[0337] In some embodiments, the battery module 100 includes a sixth limiting part 38. In the first direction X, the projection of the fourth through hole 314 is located within the projection of the sixth limiting part 38. The sixth limiting part 38 is connected to the side of the base 31 facing the third member 70, which can reduce the entry of the fourth insulating material into the first recess 301. The sixth limiting part 38 includes a seventh opening 307. The second electrical connection 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 injected, the fourth through hole 314 is in communication with the seventh opening 307. After the fifth insulating material is injected, the fifth insulating member 92 fills the seventh opening 307, so that the fourth through hole 314 is no longer in communication with the seventh opening 307.

[0339] Before the first insulating material is injected, the fifth insulating material is injected first, so that the seventh opening 307 is no longer in communication with the fourth through hole 314, reducing the entry of the first insulating material into the sixth limiting part 38 and the fifth limiting part 37.

[0340] In some embodiments, the fifth insulating member 92 is arranged in the sixth limiting part 38 through the fourth through hole 314. The fifth insulating member 92 covers the second conductive part 130a, the electrode terminal 212, and the first conductive sheet 73 located within the sixth limiting part 38, further insulating and protecting, and reducing the risk of short circuit.

[0341] In some embodiments, the battery module 100 includes the fifth limiting part 37 and the sixth limiting part 38. Before the fourth insulating material is injected, the sixth opening 306, the fourth through hole 314, and the seventh opening 307 are in communication with each other. The fifth insulating member 92 is arranged in 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 in communication.

[0342] In some embodiments, the projection of the fifth limiting part 37 and the projection of the sixth limiting part 38 overlap along the first direction X.

[0343] In some embodiments, the fifth limiting part 37 and the sixth limiting part 38 have substantially the same structure as the first limiting part 33 and the second limiting part 34, which will not be repeated here.

[0344] In some embodiments, the fifth limiting part 37 and the sixth limiting part 38 are integrally formed with the base 31. For example, integrally formed by injection molding process.

[0345] In some embodiments, the fifth limiting part 37 and the sixth limiting part 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] Referring to Figures 1 to 25 Another embodiment of the present application provides a battery module 100, which includes a cell assembly 20, a first member 30, a second member 40, and a first insulating piece 50. The cell assembly 20 includes a plurality of cells 21, each of which includes a cell shell 211 and an electrode terminal 212 extending from the cell shell 211. The cell shell 211 and the first member 30 are arranged along a first direction X, and the first member 30 has a first recess 301 in which a portion of each electrode terminal 212 is arranged. At least a portion of the first insulating piece 50 is arranged in a gap between the electrode terminal 212 and the first member 30. The second member 40 is provided with a first through hole 401, and the second member 40 and the first member 30 are arranged along the first direction X. The second member 40 includes a top wall 43 and a protrusion 44 extending from the top wall 43, and the first through hole 401 penetrates the protrusion 44. Along the first direction X, the top wall 43 and the first recess 301 have a first space 301b, and at least a portion of the first through hole 401 is located in the first space 301b as viewed along a third direction Z perpendicular to the first direction.

[0348] In some embodiments, all of the first through hole 401 is located in the first space 301b as viewed along the third direction Z perpendicular to the first direction.

[0349] In some embodiments, the projection of the first through hole 401 and the projection of the first space 301b overlap along the third direction Z.

[0350] In some embodiments, along the first direction X, the projection of the first through hole 401 along the third direction Z is located between the projection of the top wall 43 along the third direction Z and the projection of the first recess 301 along the third direction Z.

[0351] The part of each electrode terminal 212 is arranged in the first recess 301, and the sealing and insulation protection of the electrode terminal 212 are enhanced by arranging the first insulating member 50 in the gap between the electrode terminal 212 and the first member 30. By arranging the first through hole 401 in the protrusion 44 and arranging the first insulating member 50 in the first recess 301 through the first through hole 401, other channel structures arranged in the battery module 100 can be reduced, and the limitation on the structure of the battery module 100 is reduced.

[0352] It can be understood that other structures of the battery module 100 of the embodiment are the same as those of the battery module 100 of the foregoing embodiments, and will not be described herein.

[0353] Referring to Figures 1 to 25 Another embodiment of the present application provides a battery module 100, which comprises a cell assembly 20, a first member 30, a third member 70, a second limiting portion 34, a conductive assembly 110, and a second insulating member 90. The cell assembly 20 comprises a plurality of cells 21, each of which comprises a cell shell 211 and an electrode terminal 212, and the electrode terminal 212 is drawn out from the cell shell 211. The third member 70 comprises 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 shell 211 and the third member 70 are arranged along a first direction. The outer surface of the first member 30 is provided with an insulating material, and the first member 30 comprises a base 31. The base 31 is arranged on the side of the third member 70 away from the cell shell 211 along the first direction X. The first member 30 comprises a second through hole 312 penetrating the base 31. The second limiting portion 34 is arranged on the side of the base 31 facing the cell shell 211, and the second limiting portion 34 comprises a third opening 303. The conductive assembly 110 is connected to the cell assembly 20. Part of the conductive assembly 110 is arranged in the second limiting portion 34, and the conductive assembly 110 is drawn out from the third opening and the second through hole 312. The second insulating member 90 is at least partially arranged in the gap between the second limiting portion 34 and the conductive assembly 110.

[0354] The second insulating member 90 is configured to be formed by curing the second insulating material in the gap between the conductive assembly 110 and the second limiting portion 34. 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 assembly 110 are enhanced by the second insulating member 90, which is conducive to further improving the safety performance of the battery module 100.

[0356] It can be understood that other structures of the battery module 100 of the embodiment are the same as those of the battery module 100 of the foregoing embodiments, and will not be described herein.

[0357] Referring toFigure 32 The application also provides a manufacturing method of the battery module 100, comprising the following steps:

[0358] Step 1: connecting the cell assembly 20, the second member 40 and the first member 30;

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

[0360] Please refer to Figure 17 Inverting the battery module 100 comprises arranging the battery module 100 in a direction opposite to the first direction X.

[0361] Please refer to Figures 1 to 3 In some embodiments, Step 1 specifically comprises installing the second member 40 between the first group of cells 201 and the second group of cells 202, directing the first opening 301a of the first member 30 towards the cell assembly 20, and arranging the part of the electrode terminal 212 of the cell assembly 20 in the first recess 301.

[0362] Please refer to Figures 1 to 3 、 Figure 11 、 Figures 14 to 15 In some embodiments, after Step 1, the method further comprises sealing the first member 30. Specifically, the method comprises injecting the second insulating material into the second limiting portion 34 and the first limiting portion 33, solidifying the second insulating material to form the second insulating member 90, extending the first electrical connecting member 120 from the fourth opening 304, injecting the fourth insulating material into the fourth limiting portion 36 and the third limiting portion 35, solidifying the fourth insulating material to form the fourth insulating member 91, extending the second electrical connecting member from the sixth opening 306, injecting the fifth insulating material into the sixth limiting portion 38 and the fifth limiting portion 37, and solidifying the fifth insulating material to form the fifth insulating member 92.

[0363] Please refer to Figure 16 In some embodiments, Step 2 specifically comprises 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 solidifying the first insulating material to form the first insulating member 50.

[0364] Please refer to Figures 26 to 31 In another embodiment of the application, a battery pack 200 comprising the battery module 100 in any of the above embodiments is provided. The battery pack 200 comprises 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 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 protrude beyond the housing 10.

[0366] Referring to Figure 28 In some embodiments, the battery pack 200 comprises the housing 10. The housing 10 comprises a housing front wall 11, a housing back 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 back 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 back 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 back 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 back wall 12, the housing left wall 13, the housing right wall 14, and forms a receiving space. Optionally, the cell assembly 20, the second member 40, the first member 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 protrude beyond any one of the housing front wall 11, the housing back wall 12, the housing left wall 13, and the housing right wall 14.

[0368] In some embodiments, the battery pack 200 comprises a bracket 17, which connects the housing front wall 11, the housing back 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 connects the bracket 17.

[0369] In some embodiments, at least one of the housing front wall 11, the housing back wall 12, the housing left wall 13, the housing right wall 14, the housing bottom wall 15, and the top cover 16 comprises a heat-conducting material, which can improve the heat dissipation performance. Optionally, the housing front wall 11, the housing back wall 12, the housing left wall 13, the housing right wall 14, the housing bottom wall 15, and the top cover 16 all comprise a metal heat-conducting material and a heat-conducting insulating material, which can be covered on the outer surface of the metal heat-conducting material. Optionally, the metal heat-conducting material comprises aluminum.

[0370] Referring to Figure 28 and Figure 29 In some embodiments, at least one of the housing front wall 11, the housing back 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, which further improves the heat dissipation performance.

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

[0372] Referring to Figures 26 to 28 In some embodiments, the shell 10 comprises a shell opening 101, the shell opening 101 comprises a first shell opening 10a and a second shell opening 10b. The first shell opening 10a penetrates the shell front wall 11, and the second shell opening 10b penetrates the shell rear wall 12. The first heat dissipation channel 40a communicates the first shell opening 10a and the second shell opening 10b, and the first heat dissipation channel 40a communicates with the outside through the first shell opening 10a and the second shell opening 10b.

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

[0374] Referring to Figure 28 and Figure 31 In some embodiments, the battery pack 200 comprises a second circuit board 210, and the second circuit board 210 is connected to the top cover 16. The second connecting part 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 comprises a BMS component (Battery Management System), and the BMS component comprises a plurality of electronic components, which can realize the functions of control, protection, communication, power calculation, signal transmission, and power transmission of the battery cell 21.

[0376] Optionally, the second circuit board 210 comprises a flexible circuit board (FPC, Flexible Printed Circuit). Optionally, the second circuit board 210 comprises a printed circuit board (PCB, Printed Circuit Board), and a plurality of wires (not shown) are arranged on the second circuit board 210.

[0377] Referring to Figures 26 to 28 In some embodiments, the front wall 41 is connected to the shell front wall 11, and the rear wall 42 is connected to the shell rear wall 12.

[0378] In some embodiments, the battery pack 200 further comprises a first fixing part 220, the shell front wall 11 is provided with a first opening 111, the front wall 41 is provided with a second opening 411, the first fixing part 220 penetrates the first opening 111 and is connected to the second opening 411, thereby fixing the front wall 41 to the shell front wall 11. Optionally, the first fixing part 220 comprises a screw.

[0379] In some embodiments, the battery module 100 further comprises a second fixing member (not shown in the figure), the housing rear wall 12 is provided with a third opening 121, the rear wall 42 is provided with a fourth opening 421, the second fixing member passes through the third opening 121 and connects the fourth opening 421 to fix and connect the rear wall 42 to the housing rear wall 12. Optionally, the second fixing member comprises a screw.

[0380] In some embodiments, the battery module 100 further comprises a second sealing member (not shown in the figure), the second sealing member is arranged between the housing front wall 11 and the front wall 41, and the second sealing member connects the housing front wall 11 and the front wall 41 to increase the sealing between the housing front wall 11 and the front wall 41. Optionally, the second sealing member is bonded to the housing front wall 11 and the front wall 41. Optionally, the second sealing member comprises foam. Optionally, the second sealing member comprises sealant.

[0381] In some embodiments, the battery module 100 further comprises a third sealing member (not shown in the figure), the third sealing member is arranged between the housing rear wall 12 and the rear wall 42, and the third sealing member connects the housing rear wall 12 and the rear wall 42 to increase the sealing between the housing rear wall 12 and the rear wall 42. Optionally, the third sealing member is bonded to the housing rear wall 12 and the rear wall 42. Optionally, the third sealing member comprises foam. Optionally, the third sealing member comprises sealant.

[0382] Please refer to Figures 23 to 28 In some embodiments, the housing front wall 11 is provided with a first fixing hole 112 penetrating the housing front wall 11. The first fixing hole 112 and the first through hole 401 are in communication. After the first insulation member 50 is arranged in the first recess 301, the first through hole 401 can be used to discharge the gas in the battery module 100, balance the pressure inside and outside the battery module 100, and improve the safety of the battery module 100.

[0383] In some embodiments, the battery module 200 further comprises a first fastener 100a arranged in the first fixing hole 112 and the first through hole 401 to close the first through hole 401, reduce the impurities such as dust entering the first recess 301 through the first through hole 401, and also serve to connect the second member 40 to the housing front wall 11. Optionally, the first fastener 100a comprises a screw.

[0384] It can be understood that when it is necessary to discharge gas, the first fastener 100a can be removed, and after the discharge of gas is completed, the first fastener 100a can be arranged in the first through hole 401 to continue to close the first through hole 401 and reduce the impurities such as dust from entering the battery module 100.

[0385] In some embodiments, the first through hole 401 is separated from the first insulation member 50 to facilitate the connection of the first fastener 100a to the first through hole 401.

[0386] In some embodiments, the battery pack 200 comprises a sealant disposed in the first through hole 401 to reduce the entry of dust and other impurities into the first recess 301 through the first through hole 401. Optionally, the sealant comprises a sealant glue.

[0387] In some embodiments, the battery pack 200 comprises a waterproof and air-permeable valve (not shown) disposed to close the first fixing hole 112, which can prevent the entry of external impurities into the first recess 301 and can be used to discharge gas in the battery module 100.

[0388] In some embodiments, the second member 40 comprises a protrusion 40b disposed in the first heat dissipation channel 40a and extending 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 the 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 the surface of the left wall 46 facing the right wall 47. In some embodiments, the protrusion 40b is disposed on the 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] Please refer to Figure 6 、 Figure 7 、 Figures 29 to 30 In some embodiments, the heat conduction member 60 comprises a first portion 61 and two second portions 62 connected to the two sides of the first portion 61 along the second direction Y. The first portion 61 is connected to the front wall 2105 or the rear wall 2106 of the main body. When the battery module 100 is disposed in the accommodation space, along the second direction Y, one of the second portions 62 is disposed between the left wall 2101 of the main body and the left wall 13 of the shell, and the other second portion 62 is disposed between the right wall 2102 of the main body and the left wall 46. The heat of the front wall 2105 or the rear wall 2106 of the main body is conducted to the left wall 13 of the shell and the left wall 46 through the second portion 62, which further facilitates heat dissipation.

[0391] In some embodiments, one of the second portions 62 is connected to the left wall 13 of the shell, and the other second portion is connected to the left wall 46, which facilitates heat dissipation.

[0392] In some embodiments, the battery module 100 comprises a first heat-conducting glue (not shown), and one of the second portions 62 is connected to the left wall 13 of the shell through the first heat-conducting glue, and the other second portion 62 is connected to the left wall 46 through the first heat-conducting glue, which facilitates heat dissipation.

[0393] In some embodiments, the heat-conducting member 60 comprises a third portion 63 connected to the first portion 61. The second portion 62 is arranged between the bottom wall 15 of the shell and the bottom wall 2103 of the main body, and the third portion 63 is connected to the bottom wall 15 of the shell. Heat from the front wall 2105 or the rear wall 2106 of the main body is conducted to the bottom wall 15 of the shell through the third portion 63, which further facilitates heat dissipation.

[0394] In some embodiments, the third portion 63 is connected to the bottom wall 15 of the shell through the first heat-conducting adhesive, which facilitates heat dissipation.

[0395] In some embodiments, along the third direction Z, each main body portion 211a is provided with two heat-conducting members 60. The two second portions 62 on the same side of the two heat-conducting members 60 are arranged between the left wall 13 of the shell and the left wall 2101 of the main body, and the two second portions 62 are connected to the left wall 13 of the shell. The two second portions 62 on the same side of the two heat-conducting members 60 are arranged between the right wall 2102 and the left wall 46 of the main body, and the two second portions 62 are connected to the left wall 46. The two third portions 63 on the same side of the two heat-conducting members 60 are arranged between the bottom wall 15 of the shell and the bottom wall 2103 of the main body, and the two third portions 63 are connected to the bottom wall 15 of the shell. The second portion 62 is connected to the left wall 13 of the shell and the left wall 46, and the third portion 63 is connected to the bottom wall 15 of the shell. The second portion 62 and the third portion 63 can conduct heat from the main body portion 211a, which further improves the heat dissipation efficiency.

[0396] Please refer to Figure 6 and Figure 7 In some embodiments, when the battery cell 21 is not connected to the heat-conducting member 60, the second portion 62 of the heat-conducting member 60 is arranged to be inclined relative to the first portion 61, so that the second portion 62 is arranged to be inclined relative to the first portion 61, and the included angle between the second portion 62 and the first portion 61 is an obtuse angle α. When the battery cell 21 is placed on the heat-conducting member 60, the battery cell 21 can slide along the inclined surface of the second portion 62 and be connected to the first portion 61, which can reduce the risk of scratching the battery cell shell 211 by the second portion 62 and facilitate the installation of the battery cell 21.

[0397] In some embodiments, the two second portions 62 of the heat-conducting member 60 are configured to be arranged away from the first portion 61, such that the two second portions 62 are flared, the battery cell 21 slides along the inclined surfaces of the two second portions 62, and is connected to the first portion 61. When the battery cell assembly 20, the second member 40 and the heat-conducting member 60 are installed into the housing 10, the left wall 13 of the housing and the left wall 46 can press the second portions 62 arranged in an inclined manner, such that the second portions 62 are close to the first portion 61 and are substantially parallel to the surface of the left wall 13 of the housing. Alternatively, after assembly, the second portions 62 are perpendicular to the first portion 61. Not only can the risk of scratching the battery cell shell 211 be reduced, but also the installation of the battery cell 21 is facilitated, the space reserved for the installation of the battery cell 21 can be reduced, the size of the heat-conducting member 60 can be reduced, the space occupied by the heat-conducting member 60 can be reduced, and the space utilization can be improved.

[0398] In some embodiments, before assembly, the first angle A at which the second portion 62 is 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] Please refer to Figure 3 , Figure 28 and Figure 29 In some embodiments, the battery module 100 comprises a first elastic member 230. The first elastic member 230 is arranged between the front wall 11 of the housing and the first portion 61 connected to the first battery cell 21a, 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, can reduce the temperature difference between the plurality of battery cells 21, and is conducive to improving the performance of the battery pack 200.

[0400] In some embodiments, the first elastic member 230 is arranged between the rear wall 12 of the housing and the first portion 61 connected to the second battery cell 21b, 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, can reduce the temperature difference between the plurality of battery cells 21, and is further conducive to improving the performance of the battery pack 200. Alternatively, the first elastic member 230 comprises foam.

[0401] Please refer to Figure 3 In some embodiments, the battery module 100 comprises a second elastic member 240, and the second elastic member 240 is arranged between adjacent first portions 61, can provide expansion space for the battery cell 21. Alternatively, the second elastic member 240 comprises foam.

[0402] Please refer to Figure 28In some embodiments, after the battery module 100 is assembled, the battery module 100 is installed in a housing, the conductive assembly 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] Please refer to Figure 33 The application also provides a power consumption device 300 using the above battery pack 200. In an embodiment, the power consumption device 300 of the application can be, but is not limited to, an electronic device, a drone, a backup power supply, an electric vehicle, an electric motorcycle, an electric power-assisted bicycle, an electric tool, a household large-scale battery module, etc.

[0404] Those skilled in the art should recognize that the above embodiments are only used to illustrate the application, and are not used as a limitation to the application. Any appropriate changes and variations to the above embodiments, as long as they fall within the spirit and scope of the application, are within the scope of the disclosure of the application.

Claims

1. A battery module, characterized by, The application relates to a battery module, comprising: a plurality of battery cells, each of which comprises a battery cell shell and an electrode terminal drawn out from the battery cell shell; a first member arranged along a first direction with the battery cell assembly, the first member having a first recess, the first recess being directed towards the battery cell assembly along a direction opposite to the first direction, and a portion of each electrode terminal being arranged in the first recess; a first insulating member arranged at least partially in a gap between the electrode terminal and the first member; a second member provided with a first through hole, the second member and the first member being arranged along the first direction, the second member being a heat dissipation member, and the heat dissipation member comprising a first heat dissipation channel in communication with the outside; the first recess comprises a first opening directed towards the second member, and a projection of the first through hole and a projection of the first opening overlap along the first direction, the first through hole being located between the first opening and the first heat dissipation channel, the first through hole being located at the top of the first heat dissipation channel, the first through hole being configured to provide a first insulating material to the first recess through the first through hole to form the first insulating member, and the first through hole being configured to communicate with the first recess before the first insulating material is poured in.

2. The battery module of claim 1, wherein, the second member comprises a top wall and a protrusion, the first through hole penetrating through the protrusion, and the protrusion extending from the top wall along the first direction; the top wall and the first opening have a first space therebetween along the first direction.

3. The battery module of claim 2, wherein, the protrusion is located outside the first recess.

4. The battery module of claim 1, wherein, the first through hole is located outside the first recess.

5. The battery module of claim 1, wherein, the first through hole is separated from the first insulating member.

6. The battery module of claim 2, wherein, each of the battery cells comprises an electrode assembly, the battery cell shell comprises a main body and a sealing part, and the electrode assembly is arranged in the main body; the sealing part comprises a first sealing part, the electrode terminal connects the electrode assembly and is drawn 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 parts.

7. The battery module of claim 6, wherein, the second member and the plurality of battery cells are arranged along a second direction, the protrusion exceeds the main body along the first direction, and the second direction is perpendicular to the first direction.

8. The battery module of claim 6, wherein, a projection of the first through hole is separated from a projection of the first sealing part along a third direction, and the first direction is perpendicular to the third direction.

9. The battery module of claim 6, wherein, 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 member is located between the first group of battery cells and the second group of battery cells; the first group of battery cells comprises at least two battery cells arranged in a stack along a third direction, the second group of battery cells comprises at least two battery cells arranged in a stack along the third direction, the first direction, the second direction and the third direction are perpendicular to each other; at least a portion of the protrusion is located between the first sealing part of the first group of battery cells and the first sealing part of the second group of battery cells along the second direction.

10. The battery module of claim 1, wherein, The battery module further comprises a third member, the electrode terminal passes through the third member and connects a side of the third member away from the cell case; The first insulating member covers at least part of the third member.

11. The battery module of claim 10, wherein, The electrode terminal, the third member and the first member are connected by the first insulating member.

12. The battery module of claim 10, wherein, The battery module further comprises a first limiting part; The first member comprises a base, the first limiting part is arranged on a side of the base away from the third member, and the first limiting part comprises a second opening; The first member further comprises a second through hole, the second through hole penetrates the base along the first direction; The battery module further comprises a conductive assembly, the conductive assembly connects the third member, and the conductive assembly leads out from the second through hole and the second opening.

13. The battery module of claim 12, wherein, The battery module further comprises a second insulating member, at least part of the second insulating member is arranged in a gap between the conductive assembly and the first limiting part.

14. The battery module of claim 13, wherein, The battery module further comprises a second limiting part, the second limiting part is arranged on a side of the base facing the third member; The second limiting part comprises a third opening, the conductive assembly leads out from the third opening, the second through hole and the second opening; The second insulating member is at least partially arranged in a gap between the second limiting part and the conductive assembly.

15. The battery module of claim 14, wherein, The battery module comprises a first sealing member, the first sealing member is located between the third member and the second limiting part along the first direction.

16. The battery module of claim 1, wherein, The outer surface of the first member has insulation.

17. The battery module of claim 1, wherein, The first member comprises a base and four first side walls, and the base and the four first side walls enclose the first recess.

18. The battery module of claim 17, wherein, The four first side walls form the first opening at an end away from the base.

19. The battery module of claim 1, wherein, The first insulating member is configured to be formed by curing of a first insulating material.

20. The battery module of claim 1, wherein, The first through hole and the first heat dissipation channel are separated.

21. A battery module, comprising: Comprise: A cell assembly, the cell assembly comprises a plurality of cells, each of the cells comprises a cell case and an electrode terminal, and the electrode terminal leads out from the cell case; A first member, the cell assembly and the first member are arranged along a first direction, the first member has a first recess, and part of each of the electrode terminals is arranged in the first recess; A first insulating member, at least part of the first insulating member is arranged in a gap between the electrode terminal and the first member; A second member provided with a first through hole, the second member and the first member are arranged along the first direction, the second member is a heat dissipation member, the heat dissipation member comprises a first heat dissipation channel, and the first heat dissipation channel is in communication with the outside; The second member comprises a top wall and a protrusion, the first through hole penetrates the protrusion, and the protrusion extends from the top wall along the first direction; The first recess comprises a first opening facing the second member, and there is a first space between the top wall and the first opening along the first direction; At least part of the first through hole is located in the first space as viewed along a third direction, and the third direction is perpendicular to the first direction.

22. The battery module of claim 21, wherein, The protrusion is located outside the first recess.

23. The battery module of claim 21, wherein the battery module is configured to be mounted to a battery module mounting surface of a battery module mounting structure. The first through hole is located outside the first recess.

24. The battery module of claim 21, wherein, The first through hole is separated from the first insulating member.

25. The battery module of claim 21, wherein the battery module is configured to be mounted to a battery module mounting surface of a battery module mounting structure. Each of the battery cells includes an electrode assembly, the battery cell housing includes a main body portion and a sealing portion, and the electrode assembly is provided in the main body portion; The sealing portion includes a first sealing portion, and the electrode terminal connects the electrode assembly and is led out from the first sealing portion, and each of the first sealing portions is at least partially located in the first recess portion; The first insulating member covers at least part of each of the first sealing portions.

26. The battery module of claim 25, wherein, The second member and the plurality of battery cells are arranged in a second direction, the protrusion portion protrudes beyond the main body portion in the first direction, and the second direction is perpendicular to the first direction.

27. The battery module of claim 25, wherein, In the third direction, a projection of the first through hole is separated from a projection of the first sealing portion.

28. The battery module of claim 21, wherein, 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 in a second direction, and the second member is located between the first group of battery cells and the second group of battery cells; The first group of battery cells includes at least two battery cells arranged in a third direction, the second group of battery cells includes at least two battery cells arranged in the third direction, and the first direction, the second direction and the third direction are perpendicular to each other; In the second direction, at least part of the protrusion portion 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.

29. The battery module of claim 21, wherein, The battery module further includes a third member, the electrode terminal passes through the third member and connects a side of the third member away from the battery cell housing; The first insulating member covers at least part of the third member.

30. The battery module of claim 29, wherein, The electrode terminal, the third member and the first member are adhesively connected by the first insulating member.

31. The battery module of claim 29, wherein the battery module is configured to be mounted to a battery module mounting surface of a battery module mounting structure. The battery module further includes a first limiting portion; The first member includes a base portion, the first limiting portion is located on a side of the base portion away from the third member, and the first limiting portion includes a second opening; The first member further includes a second through hole, and in the first direction, the second through hole penetrates through the base portion; The battery module further includes a conductive assembly, the conductive assembly connects the third member, and the conductive assembly is led out from the second through hole and the second opening.

32. The battery module of claim 31, wherein, The battery module further includes a second insulating member, and at least part of the second insulating member is located in a gap between the conductive assembly and the first limiting portion.

33. The battery module of claim 32, wherein, The battery module further includes a second limiting portion, and the second limiting portion is located on a side of the base portion facing the third member; The second limiting portion includes a third opening, and the conductive assembly is led out from the third opening, the second through hole and the first limiting portion; The second insulating member is at least partially located in a gap between the second limiting portion and the conductive assembly.

34. The battery module of claim 33, wherein the battery module is configured to be mounted to a battery module mounting surface of a battery module mounting structure. The battery module includes a first sealing member, and in the first direction, the first sealing member is located between the third member and the second limiting portion.

35. The battery module of claim 21, wherein, The outer surface of the first member has insulating properties.

36. The battery module of claim 21, wherein, The first member includes a base portion and four first side walls, and the base portion and the four first side walls enclose the first recess portion.

37. The battery module of claim 36, wherein the battery module is configured to be mounted to a battery module mounting surface of a battery module mounting structure. The four first side walls form the first opening at an end away from the base portion.

38. The battery module of claim 21, wherein, The first insulating member is configured to be formed by solidification of a first insulating material.

39. The battery module of claim 21, wherein, The first through hole is configured to provide the first recess with a first insulation material through the first through hole to form a first insulation piece.

40. The battery module of claim 21, wherein, The second member is a heat dissipation piece, and the heat dissipation piece comprises a first heat dissipation channel, and the first heat dissipation channel is in communication with the outside.

41. The battery module of claim 40, wherein, The first through hole and the first heat dissipation channel are separated.

42. The battery module of claim 21, wherein, The first recess is arranged towards the battery cell assembly in a direction opposite to the first direction.

43. A battery pack comprising the battery module according to any one of claims 1 to 20 or the battery module according to any one of claims 21 to 42, a housing and a top cover, the housing and the top cover forming a receiving space, and the battery module being located in the receiving space.

44. The battery of claim 43, wherein the cathode comprises a lithium metal oxide. The battery pack further comprises a second circuit board, and the second circuit board is electrically connected to the battery cell assembly.

45. The battery of claim 44, wherein the cathode comprises a lithium metal oxide. The battery cell assembly and the top cover are arranged in the first direction. The second member does not exceed the housing in the first direction.

46. The battery of claim 43, wherein the cathode comprises a lithium metal oxide. The battery pack further comprises a first fastener, the housing is provided with a first fixing hole, and the first fastener is arranged in the first fixing hole and the first through hole.

47. The battery of claim 43, wherein the cathode comprises a lithium metal oxide. The battery pack comprises a sealing piece, and the sealing piece is arranged in the first through hole.

48. An electrical device, comprising: The battery pack comprises the battery pack according to any one of claims 43 to 47.

49. A method of manufacturing a battery module as claimed in any one of claims 1 to 20 or a battery module as claimed in any one of claims 21 to 42, characterised by, The method comprises the following steps: connecting the battery cell assembly, the second member and the first member; inverting the battery module, injecting the first insulation material into the first recess from the first through hole, and solidifying the first insulation material to form the first insulation piece.

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