Battery module, battery pack and electric equipment

Abstract

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

Description

[0001] This application is a divisional application of application number 202380039113.X, filed on June 16, 2023, entitled "Battery Module and Manufacturing Method Thereof, Battery Pack and Electrical Equipment". Technical Field

[0002] This application relates to the field of energy storage technology, and in particular to a battery module, battery pack and electrical equipment. Background Technology

[0003] Currently, battery packs are widely used in drones, electric vehicles, smart energy storage devices and other fields. Since the application environment of electrical equipment may be outdoors, it is necessary to strengthen the sealing and insulation protection of battery packs. Summary of the Invention

[0004] In view of this, it is necessary to provide a battery module, battery pack and electrical equipment that can enhance the sealing and insulation protection of the battery module and battery pack.

[0005] This application provides a battery module including a cell assembly, a first component, a first insulating component, and a second component. The cell assembly includes multiple cells, each cell including a cell housing and electrode terminals, with the electrode terminals extending from the cell housing. The cell assembly and the first component are arranged along a first direction. The first component has a first recess, and a portion of each electrode terminal is disposed within the first recess. At least a portion of the first insulating component is disposed in the gap between the electrode terminal and the first component. The second component has a first through-hole, and the second component and the first component are arranged along the first direction. The first recess includes a first opening facing the second component, and the projections of the first through-hole and the first opening overlap along the first direction. This application, by disposing a portion of each electrode terminal within the first recess and by disposing the first insulating component in the gap between the electrode terminal and the first component, strengthens the sealing and insulation protection of the electrode terminals, thereby enhancing the sealing and insulation protection of the battery module.

[0006] Optionally, in some embodiments of this application, the second component includes a top wall and a protrusion, with a first through-hole penetrating the protrusion. The protrusion extends from the top wall along a first direction. A first space exists between the top wall and the first opening along the first direction. When the first insulating material is injected, an external device extends through the first through-hole; the first space provides space for the external device, facilitating its insertion and reducing the risk of damage to components within the first recess by the external device.

[0007] Optionally, in some embodiments of this application, the protrusion is located outside the first recess, reducing the area occupied by the protrusion in 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 components inside the first recess.

[0008] Optionally, in some embodiments of this application, the first through hole is located outside the first recess, so that external devices can pass through the first through hole into the first recess.

[0009] Optionally, in some embodiments of this application, the first through hole is separate from the first insulating member, which facilitates the connection of the first fastener to the first through hole.

[0010] Optionally, in some embodiments of this application, a first insulating element is provided in the first through hole, which can seal the first through hole and reduce the entry of dust and other impurities into the first recess through the first through hole.

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

[0012] Optionally, in some embodiments of this application, each battery cell includes an electrode assembly, and the battery cell housing includes a main body and a sealing portion, with the electrode assembly disposed in the main body. The sealing portion includes a first sealing portion, and electrode terminals are connected to and extend from the electrode assembly. Each first sealing portion is at least partially located in a first recess. A first insulating member covers at least a portion of each first sealing portion, thereby enhancing the sealing and insulating protection of the first sealing portion.

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

[0014] Optionally, in some embodiments of this application, the projection of the first through hole is separate from the projection of the first sealing part along a third direction, and the first direction is perpendicular to the third direction, which can reduce the risk of external devices extending into the first through hole and damaging the first sealing part.

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

[0016] Optionally, in some embodiments of this application, the battery module further includes a third component, through which electrode terminals pass and connect to the side of the third component opposite to the cell housing. A first insulating member covers at least a portion of the third component, providing sealing and insulating protection for the third component.

[0017] Optionally, in some embodiments of this application, the electrode terminals, the third component, and the first component are bonded together by a first insulating member.

[0018] Optionally, in some embodiments of this application, the battery module further includes a first limiting portion. The first component includes a base, and the first limiting portion connects to the side of the base opposite to the third component. The first limiting portion includes a second opening. The first component includes a second through hole that penetrates the base. The battery module further includes a conductive component connected to the third component, and the conductive component extends from the second opening and the second through hole.

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

[0020] Optionally, in some embodiments of this application, before the second insulating member is disposed in the gap, the second through hole connects to the second opening, and after the second insulating member is disposed in the gap, the second through hole and the second opening are isolated by the second insulating member.

[0021] Optionally, in some embodiments of this application, a second limiting portion is further included, which is connected to the side of the base facing the third member. The second limiting portion includes a third opening. The conductive component extends out from the third opening, the second through hole, and the second opening. A second insulating member is at least partially disposed in the gap between the second limiting portion and the conductive component, providing sealing and insulating protection for the conductive component located in the second limiting portion.

[0022] Optionally, in some embodiments of this application, the battery module further includes a third insulating member, which is configured to be formed by curing a third insulating material after it has been disposed on the first limiting portion and the second limiting portion. The third insulating member is partially located in the second limiting portion, partially in the first limiting portion, and partially in the second through-hole. The viscosity of the third insulating material is greater than that of the second insulating material, which is beneficial for enhancing the waterproofing of the conductive components. After the third insulating material cures to form the third insulating member, the second insulating material is poured into the first limiting portion, and the second insulating material cures to form the second insulating material.

[0023] Optionally, in some embodiments of this application, the battery module includes a first seal. Along a first direction, the first seal is located between the third member and the second limiting portion, which can isolate the first recess and the third opening, further reducing the entry of the second insulating material into the first recess.

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

[0025] Optionally, in some embodiments of this application, the first component includes a base and four first sidewalls, the base and the four first sidewalls forming a first recess.

[0026] Optionally, in some embodiments of this application, the ends of the four first sidewalls away from the base form a first opening.

[0027] Optionally, in some embodiments of this application, the first insulating element is configured to be formed by curing a first insulating material.

[0028] Optionally, in some embodiments of this application, the first through hole is configured to provide a first insulating material to the first recess through the first through hole to form a first insulating element, which is beneficial for setting the first insulating element.

[0029] Optionally, in some embodiments of this application, the second component is a heat sink, which includes a first heat sink channel that communicates with the outside, thus facilitating heat dissipation.

[0030] Optionally, in some embodiments of this application, the first through hole and the first heat dissipation channel are separated to reduce interference between the first through hole and the first heat dissipation channel, making it easier for external devices to extend into the first recess from the first through hole.

[0031] Optionally, in some embodiments of this application, the first recess is disposed toward the cell assembly in a direction opposite to the first direction.

[0032] Another embodiment of this application provides a battery module, including a cell assembly, a first component, a first insulator, and a second component. The cell assembly includes a plurality of cells, each cell including a cell housing and electrode terminals, the electrode terminals extending from the cell housing. The cell assembly and the first component are arranged along a first direction, the first component having a first recess, a portion of each electrode terminal being disposed in the first recess. At least a portion of the first insulator is disposed in the gap between the electrode terminals and the first component. The second component has a first through-hole, and the second component and the first component are arranged along the first direction. The second component includes a top wall and a protrusion, the protrusion extending from the top wall, the first through-hole penetrating the protrusion. Along the first direction, the protrusion extends from the top wall. The first recess includes a first opening facing the second component. Along the first direction, the top wall and the first opening form a first space, and viewed along a third direction, at least a portion of the first through-hole is located within the first space, the third direction being perpendicular to the first direction.

[0033] This application places a portion of each electrode terminal within the first recess. By placing a first insulating member in the gap between the electrode terminal and the first component, the sealing and insulation protection of the battery module is enhanced. Furthermore, by providing a first through hole in the protrusion and then placing the first insulating member through the first through hole into the first recess, the need for other channel structures within the battery module can be reduced, thus lessening the constraints on the battery module structure.

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

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

[0036] Optionally, in some embodiments of this application, the protrusion is located outside the first recess, reducing the area occupied by the protrusion in 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 components inside the first recess.

[0037] Optionally, in some embodiments of this application, the first through hole is located outside the first recess, so that external devices can pass through the first through hole into the first recess.

[0038] Optionally, in some embodiments of this application, the first through hole is separate from the first insulating member, which facilitates the connection of the first fastener to the first through hole.

[0039] Optionally, in some embodiments of this application, a first insulating element is provided in the first through hole, which can seal the first through hole and reduce the entry of dust and other impurities into the first recess through the first through hole.

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

[0041] Optionally, in some embodiments of this application, each battery cell includes an electrode assembly, and the battery cell housing includes a main body and a sealing portion, with the electrode assembly disposed in the main body. The sealing portion includes a first sealing portion, and electrode terminals are connected to and extend from the electrode assembly. Each first sealing portion is at least partially located in a first recess. A first insulating member covers at least a portion of each first sealing portion, thereby enhancing the sealing and insulating protection of the first sealing portion.

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

[0043] Optionally, in some embodiments of this application, the projection of the first through hole is separate from the projection of the first sealing part along a third direction, and the first direction is perpendicular to the third direction, which can reduce the risk of external devices extending into the first through hole and damaging the first sealing part.

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

[0045] Optionally, in some embodiments of this application, the battery module further includes a third component, through which electrode terminals pass and connect to the side of the third component opposite to the cell housing. A first insulating member covers at least a portion of the third component, providing sealing and insulating protection for the third component.

[0046] Optionally, in some embodiments of this application, the electrode terminals, the third component, and the first component are bonded together by a first insulating member.

[0047] Optionally, in some embodiments of this application, the battery module further includes a first limiting portion. The first component includes a base, and the first limiting portion connects to the side of the base opposite to the third component. The first limiting portion includes a second opening. The first component includes a second through hole that penetrates the base. The battery module further includes a conductive component connected to the third component, and the conductive component extends from the second opening and the second through hole.

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

[0049] Optionally, in some embodiments of this application, before the second insulating member is disposed in the gap, the second through hole connects to the second opening, and after the second insulating member is disposed in the gap, the second through hole and the second opening are isolated by the second insulating member.

[0050] Optionally, in some embodiments of this application, a second limiting portion is further included, which is connected to the side of the base facing the third member. The second limiting portion includes a third opening. The conductive component extends out from the third opening, the second through hole, and the second opening. A second insulating member is at least partially disposed in the gap between the second limiting portion and the conductive component, providing sealing and insulating protection for the conductive component located within the second limiting portion.

[0051] Optionally, in some embodiments of this application, the battery module further includes a third insulating member, which is configured to be formed by curing a third insulating material after it has been disposed on the first limiting portion and the second limiting portion. The third insulating member is partially located in the second limiting portion, partially in the first limiting portion, and partially in the second through-hole. The viscosity of the third insulating material is greater than that of the second insulating material, which is beneficial for enhancing the waterproofing of the conductive components. After the third insulating material cures to form the third insulating member, the second insulating material is poured into the first limiting portion, and the second insulating material cures to form the second insulating material.

[0052] Optionally, in some embodiments of this application, the battery module includes a first seal. Along a first direction, the first seal is located between the third member and the second limiting portion, which can isolate the first recess and the third opening, further reducing the entry of the second insulating material into the first recess.

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

[0054] Optionally, in some embodiments of this application, the first component includes a base and four first sidewalls, the base and the four first sidewalls forming a first recess.

[0055] Optionally, in some embodiments of this application, the ends of the four first sidewalls away from the base form a first opening.

[0056] Optionally, in some embodiments of this application, the first insulating element is configured to be formed by curing a first insulating material.

[0057] Optionally, in some embodiments of this application, the first through hole is configured to provide a first insulating material to the first recess through the first through hole to form a first insulating element, which is beneficial for setting the first insulating element.

[0058] Optionally, in some embodiments of this application, the second component is a heat sink, which includes a first heat sink channel that communicates with the outside, thus facilitating heat dissipation.

[0059] Optionally, in some embodiments of this application, the first through hole and the first heat dissipation channel are separated to reduce interference between the first through hole and the first heat dissipation channel, making it easier for external devices to extend into the first recess from the first through hole.

[0060] Optionally, in some embodiments of this application, the first recess is disposed toward the cell assembly in a direction opposite to the first direction.

[0061] Another embodiment of this application provides a battery module including a cell assembly, a first component, a third component, a second limiting portion, a conductive component, and a second insulating component. The cell assembly includes multiple cells, each cell including a cell housing and electrode terminals, the electrode terminals extending from the cell housing. The third component includes a first hole and a second hole, through which the electrode terminals pass. The cell housing and the third component are arranged along a first direction. The outer surface of the first component is provided with an insulating material. The first component includes a base located on the side of the third component away from the cell housing, and along the first direction, the first component includes a second through hole penetrating the base. The second limiting portion is located on the side of the base facing the cell housing, and the second limiting portion includes a third opening. The conductive component connects to the cell assembly, a portion of which is located in the second limiting portion, and the conductive component extends from the third opening and the second through hole. The second insulating component is at least partially located in the gap between the second limiting portion and the conductive component.

[0062] The second insulating member is configured to be formed by curing a second insulating material after it has been disposed in the gap between the conductive component and the second limiting portion. The second limiting portion can prevent the second insulating material from overflowing outside the second limiting portion. The second insulating member 90 strengthens the insulation and fixation of the conductive component 110, which helps to further improve the safety performance of the battery module 100.

[0063] The embodiments of this application provide a battery pack, including the battery module in any of the above embodiments. The battery pack includes a housing and a top cover, which form a receiving space. The battery module is located within the receiving space, thereby enhancing the sealing and insulation protection of the battery pack.

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

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

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

[0067] Optionally, in some embodiments of this application, the battery pack includes a seal disposed in the first through hole to reduce the entry of dust and other impurities into the first recess through the first through hole.

[0068] An embodiment of this application also provides an electrical device, including the battery pack in any of the above embodiments.

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

[0070] This application provides a first insulating element through a first through hole into a first recess, which facilitates the injection of the first insulating material into the first recess. Attached Figure Description

[0071] Figure 1 A partial structural schematic diagram of the battery module is shown in some embodiments.

[0072] Figure 2 A partial structural schematic diagram of the battery module from another perspective is shown in some embodiments.

[0073] Figure 3 It shows Figure 1 An exploded view of part of the battery module structure in the embodiment.

[0074] Figure 4 Schematic diagrams of the battery cell structure are shown in some embodiments.

[0075] Figure 5 An exploded view of the battery cell is shown in some embodiments.

[0076] Figure 6 Exploded schematic diagrams of the battery cell and heat-conducting components in some embodiments are shown.

[0077] Figure 7 Schematic diagrams of the battery cell and heat-conducting components in some embodiments are shown.

[0078] Figure 8 A partial structural schematic diagram of the battery module is shown in some embodiments.

[0079] Figure 9 Schematic diagrams of the third component and conductive assembly are shown in some embodiments.

[0080] Figure 10 It shows Figure 1 A cross-sectional view of a portion of the battery module structure along the II-II direction in the embodiment.

[0081] Figure 11 It shows Figure 10 Enlarged schematic diagram at point B in the embodiment.

[0082] Figure 12 It shows Figure 2 A cross-sectional view of a portion of the battery module structure along the III-III direction in the embodiment.

[0083] Figure 13 It shows Figure 2 A cross-sectional view of a portion of the battery module structure along the IV-IV direction in the embodiment.

[0084] Figure 14 It shows Figure 13 An enlarged schematic diagram of point C in the embodiment.

[0085] Figure 15 It shows Figure 2 A cross-sectional view of a portion of the battery module structure along the VV direction in the embodiment.

[0086] Figure 16 This diagram shows a partial view of the battery pack structure.

[0087] Figure 17 It shows Figure 16 A cross-sectional view of the inverted battery pack structure in the embodiment along the VI-VI direction.

[0088] Figure 18 The diagram shows a partial structure of the battery module viewed along the third direction Z, where the first insulating material is not provided in the first recess.

[0089] Figure 19 It shows Figure 17 A partial structural diagram of the battery module in another embodiment.

[0090] Figure 20 It shows Figure 19 An enlarged schematic diagram of point E in the embodiment.

[0091] Figure 21 A structural schematic diagram of the first component is shown in some embodiments.

[0092] Figure 22 A structural schematic diagram of the first component from another perspective is shown in some embodiments.

[0093] Figure 23 A structural schematic diagram of the second component is shown in some embodiments.

[0094] Figure 24 A structural schematic diagram of the second component from another perspective is shown in some embodiments.

[0095] Figure 25 It shows Figure 23 A cross-sectional view of a portion of the battery module structure along the VII-VII direction in the embodiment.

[0096] Figure 26 Schematic diagrams of the battery pack structure are shown in some embodiments.

[0097] Figure 27 A schematic diagram of the battery pack structure from another perspective is shown in some embodiments.

[0098] Figure 28 An exploded schematic diagram of the battery pack is shown in some embodiments.

[0099] Figure 29 A schematic diagram of the structure of a portion of the battery pack in some embodiments is shown.

[0100] Figure 30 A schematic diagram of a portion of the battery pack from another perspective is shown in some embodiments.

[0101] Figure 31 A structural schematic diagram of a portion of the housing is shown in some embodiments.

[0102] Figure 32 A flowchart illustrating the manufacturing direction of the battery module in some embodiments is shown.

[0103] Figure 33 Schematic diagrams of electrical equipment in some embodiments are shown.

[0104] Explanation of key component symbols: Battery module 100, first fastener 100a, second thermally conductive adhesive 100b, insulator 100c, cell assembly 20, cell 21, cell housing 211, main body 211a, first housing 2111, first housing recess 2111a, second housing 2112, second housing recess 2112a, first extension edge 2113, second extension edge 2114, main body left wall 2101, main body right wall 2102, main body bottom wall 2103, main body top wall 2104, main body front wall 2105, main body rear wall 2106, sealing part 211b, first sealing part 2115, second sealing part 2116, electrode terminal 212, connection area 212a, electrode assembly 213, first component 30, first recess 30 1. First opening 301a, First space 301b, Second opening 302, Third opening 303, Fourth opening 304, Fifth opening 305, Sixth opening 306, Seventh opening 307, Third gap 30a, Base 31, Connecting protrusion 311, Second through hole 312, Third through hole 313, Fourth through hole 314, First sidewall 32, First limiting part 33, First connecting wall 331, Second connecting wall 332, Third connecting wall 333, Fourth connecting wall 334, Second limiting part 34, Third limiting part 35, Fourth limiting part 36, Fifth limiting part 37, Sixth limiting part 38, Second component 40, First heat dissipation channel 40a, Protrusion 40b, First through hole 401, Front wall 41, Second opening 41 1. Rear wall 42, Fourth opening 421, Top wall 43, Protrusion 44, Bottom wall 45, Left wall 46, Right wall 47, First insulating component 50, Heat-conducting component 60, First part 61, Second part 62, First gap 62a, Third part 63, Second gap 63a, Third component 70, First hole 71, Second hole 72, First conductive sheet 73, Second conductive sheet 74, Third hole 75, Fourth hole 76, Second insulating component 90, Fourth insulating component 91, Fifth insulating component 92, Conductive assembly 110, First connecting part 110a, Wire 110b, First segment 1101, First section 1101a, Second section 1101b, Second segment 1102, Second connecting part 110c, First electrical connector 120, First conductor Electrical component 120a, first insulating component 120b, second electrical connector 130, second conductive component 130a, second insulating component 130b, first sealing component 140, battery pack 200, second circuit board 210, first fixing component 220, first elastic component 230, second elastic component 240, housing 10, first housing opening 10a, second housing opening 10b, housing opening 101, housing front wall 11, first opening 111, first fixing hole 112, housing rear wall 12, third opening 121, housing left wall 13, first heat sink 131, housing right wall 14, second heat sink 141, housing bottom wall 15, top cover 16, third heat sink 161, bracket 17, first direction X, second direction Y, third direction Z.

[0105] The following specific embodiments will further illustrate this application in conjunction with the above-described accompanying drawings. Detailed Implementation

[0106] The following specific embodiments are exemplary and not limiting, and are intended to provide a basic understanding of this application, and are not intended to identify key or decisive elements of this application or limit the scope of protection. As long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any manner.

[0107] When a component is considered to be "located" on another component, it can be directly on the other component or may also be interspersed with other components. When a component is considered to be "connected" to another component, it can be directly connected to the other component or may also be interspersed with other components.

[0108] It's understandable that the terms "perpendicular" or "equal to" are used to describe an ideal state between two components. In actual production or use, two components can exist in a state that is approximately perpendicular or equal to each other. For example, combined with numerical descriptions, perpendicularity can refer to the angle between two straight lines within the range of 90° ± 10°, the dihedral angle between two planes within the range of 90° ± 10°, or the angle between a straight line and a plane within the range of 90° ± 10°. The two components described as "perpendicular" do not have to be absolutely straight lines or planes; they can be approximately straight lines or planes. From a macroscopic perspective, if the overall direction of extension is a straight line or plane, the component can be considered a "straight line" or "plane."

[0109] The terms “vertical,” “horizontal,” “left,” “right,” “top,” “bottom,” “front,” “back,” and similar expressions used herein are for illustrative purposes only and are not intended to limit this application.

[0110] The term "parallel" is used to describe an ideal state between two components. In actual production or use, two components can exist in a state that is approximately parallel. For example, in numerical terms, parallel can refer to the angle between two straight lines within the range of 180° ± 10°, the dihedral angle between two planes within the range of 180° ± 10°, or the angle between a straight line and a plane within the range of 180° ± 10°. The two components described as "parallel" do not have to be absolutely straight lines or planes; they can be approximately straight lines or planes. From a macroscopic perspective, if the overall direction of extension is straight or plane, the component can be considered a "straight line" or "plane".

[0111] Unless otherwise defined, the term "multiple" in this document, when used to describe the number of components, specifically means that the component is two or more.

[0112] In the first direction X, it includes the first direction X and the direction opposite to the first direction X; in the second direction Y, it includes the second direction Y and the direction opposite to the second direction Y; in the third direction Z, it includes the third direction Z and the direction opposite to the third direction Z.

[0113] Please see Figures 1 to 3 as well as Figures 17 to 22 This application provides a battery module 100, including a cell assembly 20, a first component 30, a second component 40, and a first insulating member 50. The cell assembly 20 includes a plurality of cells 21, each cell 21 including a cell housing 211 and an electrode terminal 212, the electrode terminal 212 extending from the cell housing 211. The cell housing 211 and the first component 30 are arranged along a first direction X. The first component 30 has a first recess 301, and a portion of each electrode terminal 212 is disposed in the first recess 301. At least a portion of the first insulating member 50 is disposed in the gap between the electrode terminal 212 and the first component 30. The second component 40 has a first through hole 401. The second component 40 and the first component 30 are arranged along the first direction X. The first recess 301 includes a first opening 301a facing the second component 40. Along the first direction X, the projection of the first through hole 401 and the projection of the first opening 301a overlap.

[0114] This application places a portion of each electrode terminal 212 within the first recess 301. By placing the first insulating member 50 in the gap between the electrode terminal 212 and the first member 30, the sealing and insulation protection of the electrode terminal 212 is enhanced, thereby enhancing the sealing and insulation protection of the battery module 100.

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

[0116] In some embodiments, the first insulating material includes one of polyurethane adhesive, epoxy adhesive, and silicone adhesive. Optionally, the first insulating material includes potting compound. Optionally, the first insulating material includes expanding foam.

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

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

[0119] In some embodiments, the battery cell 21 includes a pouch cell. The battery cell housing 211 includes a main body portion 211a and a sealing portion 211b. The main body portion 211a has a receiving space, and the battery cell housing 211 includes a first housing 2111 and a second housing 2112. The first housing 2111 has a first housing recess 2111a, and the second housing 2112 has a second housing recess 2112a. The first housing 2111 is connected to the second housing 2112, forming the receiving space. A portion of the electrode assembly 213 is disposed in the first housing recess 2111a, and a portion is disposed in the second housing recess 2112a. A first extending edge 2113 is formed by the peripheral side of the first housing 2111 extending outward, and a second extending edge 2114 is formed by the peripheral side of the second housing 2112 extending outward. After the first housing 2111 is connected to the second housing 2112, the first extending edge 2113 and the second extending edge 2114 overlap and are sealed together to form the sealing portion 211b.

[0120] In some embodiments, in one embodiment, the main body 211a is provided with a receiving space. The main body 211a includes a first housing 2111 and a second housing 2112. The first housing 2111 has a first housing recess 2111a, and the second housing 2112 is flat. The first housing 2111 is connected to the second housing 2112, forming the receiving space. The electrode assembly 213 is disposed in the first housing recess 2111a.

[0121] In some embodiments, the sealing portion 211b includes a first sealing portion 2115 and two second sealing portions 2116, the first sealing portion 2115 connecting the two second sealing portions 2116, and the two second sealing portions 2116 arranged along a second direction Y. An electrode terminal 212 extends from the first sealing portion 2115. The second direction is perpendicular to the first direction.

[0122] In some embodiments, the main body 211a includes a left wall 2101, a right wall 2102, a bottom wall 2103, and a top wall 2104. One second sealing part 2116 is connected to the left wall 2101, another second sealing part 2116 is connected to the right wall 2102, and a first sealing part 2115 is connected to the top wall 2104.

[0123] Please refer to the following embodiments: the second component 40 is a heat sink, which includes a first heat sink channel 40a and is connected to the outside, which is beneficial for heat dissipation of the battery cell assembly 20.

[0124] In some embodiments, the second member 40 includes a front wall 41 and a rear wall 42 disposed along a third direction Z. A first heat dissipation channel 40a penetrates 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. In some embodiments, the battery module 100 may utilize a cooling medium through which heat is dissipated from the first heat dissipation channel 40a. Optionally, the cooling medium includes air and liquid. Optionally, the liquid may be a liquid from the external environment, such as rain.

[0125] Taking air as the cooling medium, in some embodiments, the battery module 100 can be used on devices that are static during use. When the battery module 100 is static, it can be cooled by natural wind or external air-cooling equipment, such as a fan. Optionally, the battery module 100 can be used on devices that are dynamic during use, such as drones and electric bicycles. Since the airflow speed is faster when the device is moving, the battery module 100 can be cooled quickly.

[0126] Understandably, depending on the direction of movement of the battery module 100, the side containing the front wall 41 can serve as either an air inlet or an air outlet. When the side containing the front wall 41 can serve as an air inlet, the side containing the rear wall 42 serves as an air outlet. When the front wall 41 can serve as an air outlet, the rear wall 42 serves as an air inlet.

[0127] Please see Figure 2 In some embodiments, the battery cell assembly 20 includes a first group of battery cells 201 and a second group of battery cells 202. The first group of battery cells 201 includes at least two battery cells 21 stacked along a third direction Z, and the second group of battery cells 202 includes at least two battery cells 21 stacked along a third direction Z. The first group of battery cells 201 and the second group of battery cells 202 are arranged along a second direction Y, and a second component 40 is disposed 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.

[0128] Please see Figures 16 to 23 In some embodiments, the second component 40 includes a top wall 43 and a protrusion 44, with the top wall 43 connecting 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 a third direction Z. A first space 301b exists 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, an external device extends into the first through-hole 401. The first space 301b provides space for the external device, facilitating its insertion and reducing the risk of damage to components within the first recess 301. The first insulating material can enter the first recess 301 through the first space 301b.

[0129] Please see Figures 16 to 23In some embodiments, the protrusion 44 is located outside the first recess 301, which reduces the area occupied by the protrusion 44 in the first recess 301, reduces the length of the external device extending into the first recess 301, and further reduces the risk of the external device damaging the components inside the first recess 301.

[0130] In some embodiments, the first through hole 401 is located outside the first recess 301, so that external devices can pass through the first through hole 401 into the first recess 301.

[0131] In some embodiments, the battery module 100 includes a waterproof vent valve (not shown), which closes the first through hole 401 and prevents external impurities from entering the first recess 301. The waterproof vent valve can be used to discharge gas inside the battery module 100.

[0132] In some embodiments, the first through hole 401 is separate from the first insulating member 50, which facilitates 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 into the first recess 301 through the first through hole 401. In some embodiments, in the third direction Z, the length of the second member 40 is greater than the length of the stack of multiple cells 21, and the two ends of the second member 40 extend out of the cell assembly 20, which facilitates the provision of the protrusion 44, such that the protrusion 44 is located outside the first recess 301.

[0133] In some embodiments, the protrusion 44 extends beyond the main body 211a along the second direction Y and the first direction X, reducing the impact of the protrusion 44 on the heat dissipation of the main body 211a and facilitating heat dissipation.

[0134] In some embodiments, the second component 40 includes two protrusions 44, which are spaced apart on the top wall 43 in a third direction Z. The first insulating material can be injected simultaneously through the first through hole 401 provided on the two protrusions 44, which helps to improve the potting efficiency.

[0135] In some embodiments, the projection of the first through hole 401 along the third direction Z is separate from the projection of the first sealing portion 2115, which can reduce the risk of external devices extending through the first through hole 401 and damaging the first sealing portion 2115.

[0136] In some embodiments, along the second direction Y, the protrusion 44 is located between the first sealing portion 2115 of the first group of battery cells 201 and the first sealing portion 2115 of the second group of battery cells 202. Along the third direction Z, the projection of the protrusion 44 is separate from the projection of the first sealing portion 2115 of the first group of battery cells 201. This separation of the projection of the protrusion 44 from the projection of the first sealing portion 2115 of the second group of battery cells 202 reduces the risk of external devices penetrating through the first through-hole 401 and damaging the first sealing portion 2115.

[0137] In some embodiments, the first through hole 401 and the first heat dissipation channel 40a are separated to reduce interference between the first through hole 401 and the first heat dissipation channel 40a, making it easier for external devices to extend into the first recess 301 from the first through hole 401.

[0138] In some embodiments, the second component 40 includes a bottom wall 45, and the bottom wall 45 and the top wall 43 are arranged along a first direction X.

[0139] Please see Figures 3 to 7 , Figure 29 and Figure 30 In some embodiments, the battery module 100 includes a heat-conducting element 60. The heat-conducting element 60 includes a first portion 61 and a second portion 62. Along a third direction Z, the main body 211a includes a front wall 2105 and a rear wall 2106, with the first portion 61 connecting to either the front wall 2105 or the rear wall 2106, and the second portion 62 connecting to the first portion 61. The second component 40 includes a left wall 46 and a right wall 47 arranged along a second direction Y. Along the second direction Y, the second portion 62 is disposed between the right wall 2102 and the left wall 46. Heat from the front wall 2105 or the rear wall 2106 is conducted to the left wall 46 through the second portion 62 and dissipated through the first heat dissipation channel 40a.

[0140] In some embodiments, the second part 62 contacts the left wall 46, which is beneficial for heat dissipation.

[0141] In some embodiments, the battery module 100 includes a first thermally conductive adhesive (not shown), and the second part 62 is connected to the left wall 46 through the first thermally conductive adhesive, which further facilitates heat dissipation.

[0142] In some embodiments, the heat-conducting element 60 includes a first portion 61 and two second portions 62, which connect the two sides of the first portion 61 along a second direction Y. The first portion 61 connects to the front wall 2105 or the rear wall 2106 of the main body. Along the second direction Y, one of the second portions 62 is located on one side of the left wall 2101 of the main body, and the other second portion 62 is located between the right wall 2102 and the left wall 46 of the main body, which further facilitates heat dissipation.

[0143] In some embodiments, the heat-conducting element 60 includes a third portion 63 connected to the first portion 61. The second portion 62 and the bottom wall 2103 of the body are arranged along a first direction X. Heat from the front wall 2105 or the rear wall 2106 of the body is dissipated through the third portion 63.

[0144] In some embodiments, heat-conducting elements 60 are provided on both sides of each main body portion 211a along the third direction Z. The first part 61 of one of the two heat-conducting elements 60 is connected to the front wall 2105 of the main body, and the first part 61 of the other heat-conducting element 60 is connected to the rear wall 2106 of the main body, which can dissipate heat from the front wall 2105 and the rear wall 2106 of each main body portion 211a, thereby improving heat dissipation efficiency.

[0145] In some embodiments, the battery module 100 includes a second thermally conductive adhesive 100b, and the first part 61 is connected to the front wall 2105 and the rear wall 2106 of the main body through the second thermally conductive adhesive 100b, which is beneficial for heat dissipation.

[0146] In some embodiments, the battery module 100 includes a third thermally conductive adhesive (not shown), and the third part 63 is connected to the bottom wall 2103 of the main body through the third thermally conductive adhesive, which is beneficial for heat dissipation.

[0147] In some embodiments, the battery module 100 includes an insulator 100c, which is disposed in the third portion 63 and the bottom wall 2103 of the main body.

[0148] In some embodiments, viewed along the second direction Y, in the third direction Z, there is a first gap 62a between the two second portions 62 of the heat-conducting member 60 located on both sides of the same main body 211a (e.g., ...). Figure 30 As shown), reducing the possibility of stacking the two second parts 62 can improve the flatness of the second part 62, which is beneficial for connecting the left wall 46, ensuring the heat dissipation area, facilitating assembly, and benefiting production.

[0149] In some embodiments, viewed along the first direction X, in the third direction Z, there is a second gap 63a between the two third portions 63 of the heat-conducting member 60 located on both sides of the same main body 211a (e.g., ...). Figure 29 As shown, reducing the possibility of stacking the two third parts 63 can improve the flatness of the third part 63, ensure heat dissipation area, facilitate assembly, and benefit production.

[0150] Please see Figure 6 and Figure 7In some embodiments, when the battery cell 21 is not connected to the heat-conducting component 60, the second portion 62 of the heat-conducting component 60 is configured to be positioned away from the first portion 61, such that the second portion 62 is inclined relative to the first portion 61, and the 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 component 60, the battery cell 21 can slide in along the inclined surface of the second portion 62 and connect to the first portion 61, which reduces the risk of the second portion 62 scratching the battery cell housing 211 and facilitates the installation of the battery cell 21.

[0151] Please see Figure 3 , Figure 8 , Figure 9 , Figure 18 and Figure 20 In some embodiments, the battery module 100 further includes a third component 70. Along the first direction X, the protrusion 44 and the third component 70 are arranged with the protrusion 44 and the third component 70 spaced apart to reduce the impact of external devices extending into the first through hole 401 on the third component 70.

[0152] In some embodiments, the electrode terminal 212 passes through the third member 70 and connects to the side of the third member 70 away from the cell housing 211, and the first insulating member 50 covers at least a portion of the third member 70 to insulate and protect the third member 70.

[0153] In some embodiments, the electrode terminal 212, the third component 70, and the first component 30 are bonded together by the first insulating member 50, thereby improving the connection stability of the electrode terminal 212, the third component 70, and the first component 30, and providing sealing and insulation protection for the electrode terminal 212, the third component 70, and the first component 30.

[0154] In some embodiments, the first insulating member 50 covers a portion of the electrode terminal 212 extending out of the cell housing 211 and at least a portion of each first sealing portion 2115, thereby enhancing the protection of the first sealing portion 2115 and improving heat dissipation of the cell housing 211.

[0155] In some embodiments, the third component 70 is provided with a first hole 71 and a second hole 72 arranged along a third direction Z. The first hole 71 and the second hole 72 extend along a second direction Y. The electrode terminal 212 of an adjacent cell 21 passes through the first hole 71, and the electrode terminal 212 of another cell 21 passes through the second hole 72. The two electrode terminals are stacked and connected to each other, forming a connection region 212a. The connection region 212a connects to the third component 70 and is located between the third component 70 and the first component 30.

[0156] In some embodiments, the third component 70 includes a plurality of first conductive sheets 73, which are connected to the third component 70. The electrode terminals 212 of adjacent cells 21 pass through a first hole 71, and the electrode terminals 212 of another cell 21 pass through a second hole 72. The two electrode terminals are stacked and welded onto the first conductive sheets 73. Welding includes laser welding, ultrasonic welding, etc. In other embodiments, the connection area 212a and the first conductive sheet 73 can also be connected by other methods such as conductive adhesive.

[0157] In one embodiment, the first conductive sheet 73 is configured to collect electrical signal information of the battery cell, including but not limited to voltage, current, temperature, and resistance.

[0158] In one embodiment, the third component 70 is further provided with a second conductive sheet 74. The second conductive sheet 74 is 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, and is used to transfer current from the first group of battery cells 201 to the second group of battery cells 202, thereby realizing a series connection or a parallel connection between the first group of battery cells 201 and the second group of battery cells 202.

[0159] In some embodiments, the third component 70 further includes a third hole 75. Viewed along a direction X' opposite to the first direction X, the third hole 75 is located between the first hole 71 and the second hole 72 along the third direction Z. The third hole 75 facilitates the flow of the first insulating material into the first recess 301, thereby improving the efficiency of injecting the first insulating material into the first recess 301.

[0160] In some embodiments, the third component 70 is further provided with a fourth hole 76, which is located at the middle position of the third component 70 along the second direction Y. The battery module 100 also includes a conductive component 110. The conductive component 110 includes a first connecting portion 110a, a wire 110b, and a second connecting portion 110c. The first connecting portion 110a is connected to the third component 70 through a plurality of fourth holes 76, and the wire 110b connects the first connecting portion 110a and the second connecting portion 110c.

[0161] In some embodiments, the conductive component 110 is configured to transmit electrical signal information of the battery cell 21 and / or transmit the power of the battery cell assembly 20. The electrical signal information includes, but is not limited to, voltage, current, temperature, and resistance. In this embodiment, the conductive component 110 is configured to transmit electrical signal information of the battery cell 21 as an example.

[0162] Optionally, the third component 70 includes a first circuit board, which includes a flexible printed circuit board (FPC). Optionally, the first circuit board includes a printed circuit board (PCB).

[0163] Please see Figures 1 to 3 and Figure 8 In some embodiments, the battery module 100 further includes a first electrical connector 120 and a second electrical connector 130, which are connected to external devices to realize the input or output of electrical energy. Optionally, the first electrical connector 120 and the second electrical connector 130 are welded to the third component 70. Optionally, the first electrical connector 120 includes a copper busbar, and the second electrical connector 130 includes a copper busbar.

[0164] In some embodiments, the first electrical connector 120 includes a first conductive portion 120a and a first insulating portion 120b. The first conductive portion 120a extends from both ends of the first insulating portion 120b. One end of the first conductive portion 120a is connected to the first conductive sheet 73, and the other end is connected to an external device.

[0165] In some embodiments, along the third direction Z, the projections of the first conductive sheet 73, the electrode terminal 212, and the first conductive portion 120a overlap, which can reduce the bending of the electrode terminal 212, simplify the assembly process, and facilitate the welding of the electrode terminal 212 to the first conductive sheet 73 and the welding of the first conductive portion 120a to the first conductive sheet 73.

[0166] In some embodiments, the second electrical connector 130 includes a second conductive portion 130a and a second insulating portion 130b. The second conductive portion 130a extends from both ends of the second insulating portion 130b. One end of the second conductive portion 130a is connected to another first conductive sheet 73, and the other end is connected to an external device.

[0167] In some embodiments, along the third direction Z, the projections of another first conductive sheet 73, the electrode terminal 212, and the second conductive portion 130a overlap, which can reduce the bending of the electrode terminal 212, simplify the assembly process, facilitate the welding of the electrode terminal 212 to another first conductive sheet 73, and facilitate the welding of the second conductive portion 130a to another first conductive sheet 73.

[0168] Please see Figures 1 to 3 , Figure 21 and Figure 23 In some embodiments, the outer surface of the first component 30 is insulating. Optionally, the first component 30 is made of an insulating material. Optionally, the first component 30 is made of a metallic material and an insulating material, with the insulating material covering the outer surface of the metallic material.

[0169] In some embodiments, the first member 30 includes a base 31, which is disposed on the side of the third member 70 facing away from the cell housing 211. The base 31 has a connecting protrusion 311 on the side facing the third member 70, which connects the third member 70, such that there is a third gap 30a between the third member 70 and the base 31. The connecting area 212a is located within the third gap 30a, which facilitates the flow of the first insulating material into the third gap 30a, covering the connecting area 212a, insulating and protecting the connecting area 212a, and facilitating the bonding of the third member 70 to the base 31.

[0170] In some embodiments, the first member 30 includes a first sidewall 32 extending from the edge of the base 31, the first sidewall 32 and the base 31 forming a first recess 301, the first recess 301 being disposed toward the cell assembly 20 in a direction opposite to the first direction X. Optionally, the first member 30 includes four first sidewalls 32, the four first sidewalls 32 and the base 31 surrounding the first recess 301.

[0171] In some embodiments, the ends of the four first sidewalls 32 away from the base 31 form a first opening 301a.

[0172] In some embodiments, along the second direction Y, the projection of the third member 70 is located within the projection of the first recess 301, which can insulate and protect the third member 70.

[0173] In some embodiments, along the second direction Y, the projection of the electrode terminal 212 is located within the projection of the first sidewall 32, which can insulate and protect the electrode terminal 212. Optionally, the projection of the first sealing portion 2115 is located within the projection of the first sidewall 32, which can further insulate and protect the electrode terminal 212.

[0174] Please see 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 the side of the base 31 away from the third member 70, and the first limiting portion 33 includes a second opening 302.

[0175] In some embodiments, the first component 30 includes a second through-hole 312 that extends through the base 31 along a first direction X. Along the first direction X, before the first insulating material is injected, the second through-hole 312 and the second opening 302 are connected. The conductive component 110 extends from the second through-hole 312 and the second opening 302.

[0176] In some embodiments, the first connecting portion 110a passes through the second through hole 312 to connect to the third component 70, and the wire 110b is led out from the second opening 302 and the second through hole 312.

[0177] In some embodiments, the battery module 100 includes a second insulating member 90, at least a portion of which is disposed in the gap between the conductive component 110 and the first limiting portion 33. The second insulating member 90 is configured to be formed by curing a second insulating material disposed in the gap between the conductive component 110 and the first limiting portion 33.

[0178] In some embodiments, the second insulating member 90 covers the connection between the first connecting portion 110a and the third component 70, providing insulation and protection for the connection. The second insulating member 90 also covers the conductive component 110 located within the first limiting portion 33. Optionally, the second insulating member 90 covers the wire 110b and the first connecting portion 110a located within the first limiting portion 33.

[0179] In some embodiments, before the second insulating material is poured, the second through hole 312 is in communication with the second opening 302. After the second insulating material is poured, the second insulating member 90 fills the second opening 302 of the first limiting portion 33, so that the second through hole 312 is no longer in communication with the second opening 302.

[0180] In some embodiments, the battery module 100 includes a second limiting portion 34, and the projection of the second through hole 312 is located within the projection of the second limiting portion 34 along the first direction X. The second limiting portion 34 is connected to the side of the base 31 facing the third member 70, and the connection between the second limiting portion 34 and the third member 70 reduces the ingress of the second insulating material into the first recess 301. The second limiting portion 34 includes a third opening 303. The conductive component 110 extends from the third opening 303, the second through hole 312, and the second opening 302.

[0181] Before the second insulating material is poured, the second through hole 312 is connected to the third opening 303. After the second insulating material is poured, the second insulating member 90 fills the third opening 303 of the first limiting part 33, so that the second through hole 312 is no longer connected to the third opening 303.

[0182] Before injecting the first insulating material, the second insulating material is injected first, so that the third opening 303 no longer connects to the second through hole 312, reducing the amount of the first insulating material entering the first limiting part 33 and the second limiting part 34. At least a portion of the second insulating member 90 is disposed in the gap between the first limiting part 33 and the conductive component 110 and the gap between the second limiting part 34 and the conductive component 110. Optionally, the second insulating member 90 covers the connection between the first connecting part 110a and the third component 70 located in the second limiting part 34, insulating and protecting the connection between the first connecting part 110a and the third component 70, reducing the risk of short circuit. The second insulating member 90 covers the first connecting part 110a and the wire 110b, and the second insulating member 90 is disposed in the gap between adjacent wires 110b.

[0183] In some embodiments, the battery module 100 includes a first limiting portion 33 and a second limiting portion 34. Before the second insulating material is injected, the third opening 303, the second through hole 312, and the second opening 302 are interconnected. The second insulating member 90 is disposed on 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 interconnected.

[0184] In some embodiments, the battery module 100 includes a second limiting portion 34. Before the second insulating material is injected, the third opening 303 and the second through hole 312 are interconnected. A second insulating member 90 is disposed at the third opening 303, the second through hole 312, and the second opening 302, so that the third opening 303 and the second through hole 312 are no longer interconnected. The second limiting portion 34 can restrict the second insulating material from overflowing out of the second limiting portion 34.

[0185] In some embodiments, along the first direction X, the projections of the first limiting portion 33 and 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 conductor 110b located within the second opening 302 and the third opening 303, such as a cylindrical structure, an elliptical cylinder structure, a regular prism structure, or an irregular prism structure, etc. The regular prism structure can be a triangular prism, a square prism, a pentagonal prism, etc. This application uses a square prism as an example for illustration.

[0186] In some embodiments, the first limiting portion 33 includes a first connecting wall 331, a second connecting wall 332, a third connecting wall 333, and a fourth connecting wall 334. The first connecting wall 331 and the second connecting wall 332 are disposed along a third direction Z, and the third connecting wall 333 and the fourth connecting wall 334 are disposed along a second direction Y. The first connecting wall 331 connects the third connecting wall 333 and the fourth connecting wall 334, and the second connecting wall 332 connects the third connecting wall 333 and the fourth connecting wall 334, forming the first limiting portion 33. The first connecting wall 331, the second connecting wall 332, the third connecting wall 333, and the fourth connecting wall 334 connect the base 31. Viewed along a direction X' opposite to the first direction X, the first connecting wall 331, the second connecting wall 332, the third connecting wall 333, and the fourth connecting wall 334 surround the first connecting portion 110a and the wire 110b located within the second opening 302.

[0187] In some embodiments, the first limiting portion 33 and the second limiting portion 34 are integrally formed with the base 31. For example, they are integrally formed by injection molding.

[0188] In some embodiments, the first limiting portion 33 and the second limiting portion 34 are bonded to the base portion 31.

[0189] In some embodiments, the battery module 100 includes a first seal 140 disposed between the third member 70 and the second limiting portion 34. The first seal 140 connects the third member 70 and the second limiting portion 34, further isolating the first recess 301 and the third opening 303, and further reducing the ingress of the second insulating material into the first recess 301. Optionally, the first seal 140 includes a compressible elastic element, such as foam or a silicone pad.

[0190] In some embodiments, when injecting the second insulating material, the conductive component 110 is first straightened so that it is substantially perpendicular to the third member 70, and then the second insulating material is injected into the first limiting portion 33 and the second limiting portion 34. The second insulating material is then fixed to form the second insulating member.

[0191] In some embodiments, the second insulating material includes at least one selected from polyurethane adhesive, epoxy adhesive, and silicone adhesive. Optionally, the second insulating material includes a fast-drying adhesive.

[0192] In some embodiments, the wire 110b includes a first segment 1101 disposed on the first limiting portion 33 and a second segment 1102 extending from the first limiting portion 33. The first segment 1101 includes a first section 1101a and a second section 1101b, and the first section 1101a connects the first connecting portion 110a and the second section 1101b.

[0193] The battery module 100 also includes a third insulating element, which is configured to be formed by curing a third insulating material after it is disposed on the first limiting portion 33 and the second limiting portion 34. The third insulating element is partially located in the second limiting portion 34, partially in the first limiting portion 33, and partially in the second through-hole 312. The viscosity of the third insulating material is greater than that of the second insulating material, which is beneficial for waterproofing the reinforced conductive component 110. After the third insulating material cures to form the third insulating element, the second insulating material is poured into the first limiting portion 33, and the second insulating material cures to form the second insulating material.

[0194] Please see Figures 1 to 3 , Figure 13 , Figure 14 In some embodiments, the battery module 100 includes a third limiting portion 35 connected to the side of the base 31 opposite to the third member 70, and the third limiting portion 35 includes a fourth opening 304. The first member 30 includes a third through hole 313 extending through the base 31 along a first direction X. A first electrical connector 120 extends from the third through hole 313 and the fourth opening 304.

[0195] Optionally, along the third direction Z, the projection of the first conductive portion 120a is located within the projection of the third limiting portion 35. The first conductive portion 120a is insulated and protected by the third limiting portion 35. The battery module 100 includes a fourth insulating member 91. The fourth insulating member 91 is configured to be formed by curing a fourth insulating material after it is disposed on the third limiting portion 35. At least a portion of the fourth insulating member 91 is disposed in the gap between the first electrical connector 120 and the third limiting portion 35. The fourth insulating member 91 covers the first conductive portion 120a for further insulation and protection.

[0196] Optionally, along the third direction Z, the projections of 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 are located within the projection of the third limiting portion 35. The third limiting portion 35 further insulates and protects the first conductive portion 120a, the electrode terminal 212, and the first conductive sheet 73. The fourth insulating member 91 covers the portion of 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 for further insulation and protection.

[0197] Optionally, the projection of the first insulating portion 120b is located within the projection of the third limiting portion 35. The third limiting portion 35 insulates and protects the first conductive portion 120a, the portion of the electrode terminal 212 extending out of the third through hole 313, the portion of the first conductive sheet 73 extending out of the third through hole 313, and the first insulating portion 120b located within the third limiting portion 35. The fourth insulating member 91 covers the first conductive portion 120a, the portion of the electrode terminal 212 extending out of the third through hole 313, the portion of the first conductive sheet 73 extending out of the third through hole 313, and the first insulating portion 120b located within the third limiting portion 35 for further insulation and protection.

[0198] In some embodiments, before the fourth insulating material is poured, the third through hole 313 is connected to the fourth opening 304. After the fourth insulating material is poured, the fourth insulating member 91 fills the fourth opening 304 of the third limiting portion 35, so that the third through hole 313 is no longer connected to the fourth opening 304.

[0199] In some embodiments, the battery module 100 includes a fourth limiting portion 36, and the projection of the third through hole 313 is located within the projection of the fourth limiting portion 36 along the first direction X. The fourth limiting portion 36 is connected to the side of the base 31 facing the third member 70, which can reduce the ingress of the fourth insulating material into the first recess 301. The fourth limiting portion 36 includes a fifth opening 305. The first electrical connector 120 extends from the fifth opening 305, the third through hole 313, and the fourth opening 304.

[0200] Before the fourth insulating material is poured, the third through hole 313 is connected to the fourth opening 304. After the fourth insulating material is poured, the fourth insulating member 91 fills the fifth opening 305 of the fourth limiting part 36, so that the third through hole 313 is no longer connected to the fifth opening 305.

[0201] Before pouring the first insulating material, the fourth insulating material is poured first, so that the fifth opening 305 is no longer connected to the third through hole 313, reducing the amount of the first insulating material entering the fourth limiting part 36 and the third limiting part 35. The fourth insulating member 91 is provided 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 in the fourth limiting part 36, further insulating and protecting them, and reducing the risk of short circuit.

[0202] In some embodiments, the battery module 100 includes a third limiting portion 35 and a fourth limiting portion 36. Before the fourth insulating material is injected, the fourth opening 304, the third through hole 313, and the fifth opening 305 are interconnected. The fourth insulating member 91 is disposed on 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 interconnected.

[0203] In some embodiments, along the first direction X, the projection of the third limiting portion 35 and the projection of the fourth limiting portion 36 overlap.

[0204] In some embodiments, the structures of the third limiting part 35 and the fourth limiting part 36 are basically the same as those of the first limiting part 33 and the second limiting part 34, and will not be described in detail here.

[0205] In some embodiments, the third limiting portion 35 and the fourth limiting portion 36 are integrally formed with the base 31. For example, they are integrally formed by injection molding.

[0206] In some embodiments, the third limiting portion 35 and the fourth limiting portion 36 are bonded to the base portion 31.

[0207] In some embodiments, the fourth insulating material includes one of polyurethane adhesive, epoxy adhesive, and silicone adhesive. Optionally, the fourth insulating material includes a fast-drying adhesive.

[0208] Please see Figures 1 to 3 and Figure 15 In some embodiments, the battery module 100 includes a fifth limiting portion 37 connected to the side of the base 31 opposite to the third member 70, and the fifth limiting portion 37 includes a sixth opening 306. The base 31 has a fourth through hole 314 extending through the base 31 along a first direction X. The second electrical connector 130 extends from the fourth through hole 314 and the sixth opening 306.

[0209] Optionally, along the third direction Z, the projection of the second conductive portion 130a lies within the projection of the fifth limiting portion 37. The fifth limiting portion 37 provides insulation and protection for the second conductive portion 130a. The battery module 100 includes a fifth insulating member 92. The fifth insulating member 92 is configured to be formed by applying a fifth insulating material to the fifth limiting portion 37 and then curing it. At least a portion of the fifth insulating member 92 is disposed in the gap between the second electrical connector 130 and the fifth limiting portion 37. The fifth insulating member 92 covers the second conductive portion 130a for further insulation and protection.

[0210] Optionally, along the third direction Z, the projections of the second conductive portion 130a, the portion of the electrode terminal 212 extending out of the fourth through hole 314, and the portion of the first conductive sheet 73 extending out of the fourth through hole 314 are located within the projection of the fifth limiting portion 37. The fifth limiting portion 37 further insulates and protects the second conductive portion 130a, the electrode terminal 212, and the first conductive sheet 73. The fifth insulating member 92 covers the portion of the second conductive portion 130a, the portion of the electrode terminal 212 extending out of the fourth through hole 314, and the portion of the first conductive sheet 73 extending out of the fourth through hole 314 for further insulation and protection.

[0211] Optionally, the projection of the second insulating portion 130b is located within the projection of the fifth limiting portion 37. The fifth limiting portion 37 insulates and protects the second conductive portion 130a, the portion of the electrode terminal 212 extending out of the fourth through hole 314, the portion of the first conductive sheet 73 extending out of the fourth through hole 314, and the second insulating portion 130b located within the fifth limiting portion 37. The fifth insulating member 92 covers the second conductive portion 130a, the portion of the electrode terminal 212 extending out of the fourth through hole 314, the portion of the first conductive sheet 73 extending out of the fourth through hole 314, and the second insulating portion 130b located within the fifth limiting portion 37 for further insulation and protection.

[0212] In some embodiments, before the fifth insulating material is poured, the fourth through hole 314 is in communication with the sixth opening 306. After the fifth insulating material is poured, the fifth insulating member 92 fills the sixth opening 306, so that the fourth through hole 314 is no longer in communication with the sixth opening 306.

[0213] In some embodiments, the battery module 100 includes a sixth limiting portion 38, and the projection of the fourth through hole 314 is located within the projection of the sixth limiting portion 38 along the first direction X. The sixth limiting portion 38 is connected to the side of the base 31 facing the third member 70, which can reduce the ingress of the fourth insulating material into the first recess 301. The sixth limiting portion 38 includes a seventh opening 307. The second electrical connector 130 extends from the seventh opening 307, the fourth through hole 314, and the sixth opening 306.

[0214] Before the fifth insulating material is poured, the fourth through hole 314 is connected to the seventh opening 307. After the fifth insulating material is poured, the fifth insulating element 92 fills the seventh opening 307, so that the fourth through hole 314 is no longer connected to the seventh opening 307.

[0215] Before injecting the first insulating material, the fifth insulating material is injected first, so that the seventh opening 307 is no longer connected to the fourth through hole 314, thereby reducing the amount of the first insulating material entering the sixth limiting part 38 and the fifth limiting part 37.

[0216] In some embodiments, the fifth insulating member 92 is disposed on the sixth limiting portion 38 through the fourth through hole 314. The fifth insulating member 92 covers the second conductive portion 130a, the electrode terminal 212 and the first conductive sheet 73 located in the sixth limiting portion 38, to further insulate and protect them and reduce the risk of short circuit.

[0217] In some embodiments, the battery module 100 includes a fifth limiting portion 37 and a sixth limiting portion 38. Before the fourth insulating material is injected, the sixth opening 306, the fourth through hole 314, and the seventh opening 307 are interconnected. The fifth insulating member 92 is disposed on 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 interconnected.

[0218] In some embodiments, along the first direction X, the projection of the fifth limiting portion 37 and the projection of the sixth limiting portion 38 overlap.

[0219] In some embodiments, the structures of the fifth limiting part 37 and the sixth limiting part 38 are basically the same as those of the first limiting part 33 and the second limiting part 34, and will not be described in detail here.

[0220] In some embodiments, the fifth limiting portion 37 and the sixth limiting portion 38 are integrally formed with the base 31. For example, they are integrally formed by injection molding.

[0221] In some embodiments, the fifth limiting portion 37 and the sixth limiting portion 38 are bonded to the base portion 31.

[0222] In some embodiments, the fifth insulating material includes one of polyurethane adhesive, epoxy adhesive, and silicone adhesive. Optionally, the fifth insulating material includes a fast-drying adhesive.

[0223] Please see Figures 1 to 25 Another embodiment of this application provides a battery module 100, including a cell assembly 20, a first component 30, a second component 40, and a first insulating member 50. The cell assembly 20 includes a plurality of cells 21, each cell 21 including a cell housing 211 and an electrode terminal 212 extending from the cell housing 211. The cell housing 211 and the first component 30 are arranged along a first direction X. The first component 30 has a first recess 301, and a portion of each electrode terminal 212 is disposed in the first recess 301. At least a portion of the first insulating member 50 is disposed in the gap between the electrode terminal 212 and the first component 30. The second component 40 has a first through hole 401. The second component 40 and the first component 30 are arranged along the first direction X. The second component 40 includes a top wall 43 and a protrusion 44 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 opening 301a form a first space 301b. When viewed along the third direction Z, at least a portion of the first through hole 401 is located within the first space 301b, and the third direction is perpendicular to the first direction.

[0224] In some embodiments, when viewed along the third direction Z, the entire first through-hole 401 is located within the first space 301b, and the third direction is perpendicular to the first direction.

[0225] In some embodiments, along the third direction Z, the projection of the first through hole 401 and the projection of the first space 301b overlap.

[0226] In some embodiments, in 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.

[0227] This application places a portion of each electrode terminal 212 within the first recess 301. By placing the first insulating member 50 in the gap between the electrode terminal 212 and the first member 30, the sealing and insulation protection of the electrode terminal 212 is enhanced. Furthermore, by providing a first through hole 401 in the protrusion 44 and providing the first insulating member 50 through the first through hole 401 to the first recess 301, the need for other channel structures within the battery module 100 can be reduced, thus lessening the limitations on the structure of the battery module 100.

[0228] It is understood that the other structures of the battery module 100 in this embodiment are the same as those of the battery module 100 in the previous embodiment, and will not be described in detail here.

[0229] Please see Figures 1 to 25 Another embodiment of this application provides a battery module 100, including a cell assembly 20, a first component 30, a third component 70, a second limiting portion 34, a conductive component 110, and a second insulating component 90. The cell assembly 20 includes a plurality of cells 21, each cell 21 including a cell housing 211 and an electrode terminal 212, the electrode terminal 212 extending from the cell housing 211. The third component 70 includes a first hole 71 and a second hole 72, the electrode terminal 212 passing through the first hole 71 and the second hole 72. The cell housing 211 and the third component 70 are arranged along a first direction. The outer surface of the first component 30 is provided with an insulating material. The first component includes a base 31, located on the side of the third component 70 away from the cell housing 211. Along the first direction X, the first component 30 includes a second through hole 312 penetrating the base 31. The second limiting portion 34 is located on the side of the base 31 facing the cell housing 211, and the second limiting portion 34 includes a third opening 303. The conductive component 110 is connected to the cell assembly 20. A portion of the conductive component 110 is located in the second limiting portion 34, and the conductive component 110 extends out from the third opening and the second through hole 312. The second insulating member 90 is at least partially located in the gap between the second limiting portion 34 and the conductive component 110.

[0230] The second insulating member 90 is configured to be formed by curing a second insulating material after it has been disposed in the gap between the conductive component 110 and the second limiting portion 34. The second limiting portion 34 can prevent the second insulating material from overflowing out of the second limiting portion 34.

[0231] In this application, the insulation and fixation of the conductive component 110 are strengthened by the second insulating member 90, which helps to further improve the safety performance of the battery module 100.

[0232] It is understood that the other structures of the battery module 100 in this embodiment are the same as those of the battery module 100 in the previous embodiment, and will not be described in detail here.

[0233] Please see Figure 32 This application also provides a method for manufacturing the above-mentioned battery module 100, comprising the following steps: Step 1: Connect the cell assembly 20, the second component 40, and the first component 30; Step 2: Invert the battery module and inject the first insulating material into the first recess 301 through the first through hole 401. The first insulating material is cured to form the first insulating component 50.

[0234] Please see Figure 17 Inverting the battery module 100 includes setting the battery module 100 in a direction opposite to the first direction X.

[0235] Please see Figures 1 to 3 In some embodiments, step 1 specifically includes installing the second component 40 between the first group of battery cells 201 and the second group of battery cells 202, oriented the first opening 301a of the first component 30 toward the battery cell assembly 20, and placing a portion of the electrode terminal 212 of the battery cell assembly 20 in the first recess 301.

[0236] Please see Figures 1 to 3 , Figure 11 , Figures 14 to 15 In some embodiments, after step 1, the method further includes: sealing the first component 30. Specifically, this includes injecting a second insulating material into the second limiting portion 34 and the first limiting portion 33, the second insulating material curing to form a second insulating member 90, extending the first electrical connector 120 from the fourth opening 304, injecting a fourth insulating material into the fourth limiting portion 36 and the third limiting portion 35, the fourth insulating material curing to form a fourth insulating member 91, the second electrical connector extending from the sixth opening 306, and injecting a fifth insulating material into the sixth limiting portion 38 and the fifth limiting portion 37, the fifth insulating material curing to form a fifth insulating member 92.

[0237] Please refer to the following: Figure 16 In some embodiments, step 2 specifically includes inverting the battery module 100, inserting an external device into the first recess 301 through the first through hole 401, and injecting a first insulating material into the first recess 301. After the first insulating material is cured, it forms a first insulating component 50.

[0238] Please see Figures 26 to 31 In another embodiment of this application, a battery pack 200 is provided, which includes the battery module 100 in any of the above embodiments. The battery pack 200 includes a housing 10 and a top cover 16. The top cover 16 is connected to the housing 10 and forms a receiving space, in which the battery module 100 is located.

[0239] In some embodiments, the cell assembly 20 and the top cover 16 are arranged along a first direction X. Along the first direction X, the second member 40 does not extend beyond the housing 10.

[0240] Please see Figure 28 In some embodiments, the battery pack 200 includes a housing 10. The housing 10 includes a front wall 11, a rear wall 12, a left wall 13, a right wall 14, and a bottom wall 15. The left wall 13 and the right wall 14 are arranged along a second direction Y, and the front wall 11 and the rear wall 12 are arranged along a third direction Z. The front wall 11 connects to the left wall 13 and the right wall 14, the rear wall 12 connects to the left wall 13 and the right wall 14, the bottom wall 15 connects to the front wall 11, the rear wall 12, the left wall 13, and the right wall 14, and the top cover 16 connects to the front wall 11, the rear wall 12, the left wall 13, and the right wall 14, forming a receiving space. Optionally, the cell assembly 20, the second component 40, the first component 30, and the first insulating component 50 are all housed within the receiving space.

[0241] In some embodiments, along the first direction X, the second member 40 does not extend beyond any one of the front wall 11, rear wall 12, left wall 13, or right wall 14 of the housing.

[0242] In some embodiments, the battery pack 200 includes a bracket 17, which connects the front wall 11, rear wall 12, left wall 13, and right wall 14 of the housing. The bracket 17 and the top cover 16 are arranged along a first direction X, and the top cover 16 is connected to the bracket 17.

[0243] In some embodiments, at least one of the front wall 11, rear wall 12, left wall 13, right wall 14, bottom wall 15, and top cover 16 of the housing includes a thermally conductive material to improve heat dissipation performance. Optionally, the front wall 11, rear wall 12, left wall 13, right wall 14, bottom wall 15, and top cover 16 of the housing all include a metallic thermally conductive material and a thermally conductive insulating material, with the insulating material covering the outer surface of the metallic thermally conductive material. Optionally, the metallic thermally conductive material includes aluminum.

[0244] Please see Figure 28 and Figure 29 In some embodiments, at least one of the front wall 11, rear wall 12, left wall 13, right wall 14, bottom wall 15, and top cover 16 of the housing is provided with heat sinks to further improve heat dissipation performance.

[0245] Optionally, along the second direction Y, a first heat sink 131 is provided on the side of the left wall 13 of the outer casing opposite to the right wall 14 of the outer casing, and a second heat sink 141 is provided on the side of the right wall 14 of the outer casing opposite to the left wall 13 of the outer casing. Optionally, a third heat sink 161 is provided on the top cover 16.

[0246] Please see Figures 26 to 28In some embodiments, the housing 10 includes a housing opening 101, which includes a first housing opening 10a and a second housing opening 10b. The first housing opening 10a penetrates the front wall 11 of the housing, and the second housing opening 10b penetrates the rear wall 12 of the housing. A first heat dissipation channel 40a connects the first housing opening 10a and the second housing opening 10b, and the first heat dissipation channel 40a communicates with the outside through the first housing opening 10a and the second housing opening 10b.

[0247] Understandably, depending on the direction of movement of the battery pack 200, the first housing opening 10a can serve as either an air inlet or an air outlet. When the first housing opening 10a serves as an air inlet, the second housing opening 10b serves as an air outlet. When the first housing opening 10a serves as an air outlet, the second housing opening 10b serves as an air inlet.

[0248] Please see Figure 28 and Figure 31 In some embodiments, the battery pack 200 includes a second circuit board 210 connected to the top cover 16. A second connection portion 110c is connected to the second circuit board 210 and can transmit collected information to the second circuit board 210.

[0249] Optionally, the second circuit board 210 includes a BMS (Battery Management System) component, which includes multiple electronic components that can perform functions such as control, protection, communication, power calculation, signal transmission, and power transmission of the battery cell 21.

[0250] Optionally, the second circuit board 210 includes a flexible printed circuit (FPC). Optionally, the second circuit board 210 includes a printed circuit board (PCB), on which multiple conductors (not shown) are disposed.

[0251] Please see Figures 26 to 28 In some embodiments, the front wall 41 is connected to the front wall 11 of the outer casing, and the rear wall 42 is connected to the rear wall 12 of the outer casing.

[0252] In some embodiments, the battery pack 200 further includes a first fixing member 220. The front wall 11 of the housing has a first opening 111, and the front wall 41 has a second opening 411. The first fixing member 220 passes through the first opening 111 and connects to the second opening 411, thereby fixing the front wall 41 to the front wall 11 of the housing. Optionally, the first fixing member 220 includes a screw.

[0253] In some embodiments, the battery module 100 further includes a second fastener (not shown), the rear wall 12 of the housing has a third opening 121, and the rear wall 42 has a fourth opening 421. The second fastener passes through the third opening 121 and connects to the fourth opening 421, thereby fixing the rear wall 42 to the rear wall 12 of the housing. Optionally, the second fastener includes a screw.

[0254] In some embodiments, the battery module 100 further includes a second seal (not shown), disposed between the front wall 11 and the front wall 41 of the housing, connecting the front wall 11 and the front wall 41 to increase the sealing between them. Optionally, the second seal is bonded to the front wall 11 and the front wall 41 of the housing. Optionally, the second seal includes foam. Optionally, the second seal includes sealant.

[0255] In some embodiments, the battery module 100 further includes a third seal (not shown), disposed between the rear wall 12 and the rear wall 42 of the housing, connecting the rear wall 12 and the rear wall 42 to increase the sealing between them. Optionally, the third seal is bonded to the rear wall 12 and the rear wall 42 of the housing. Optionally, the third seal includes foam. Optionally, the third seal includes sealant.

[0256] Please see Figures 23 to 28 In some embodiments, the front wall 11 of the outer casing is provided with a first fixing hole 112, which penetrates the front wall 11 of the outer casing. The first fixing hole 112 communicates with the first through hole 401. After the first insulating member 50 is provided in the first recess 301, the first through hole 401 can be used to discharge gas inside the battery module 100, thereby achieving pressure balance inside and outside the battery module 100 and improving the safety of the battery module 100.

[0257] In some embodiments, the battery pack 200 further includes a first fastener 100a, which is disposed in the first fixing hole 112 and the first through hole 401. The first fastener 100a can seal the first through hole 401 to reduce the entry of dust and other impurities into the first recess 301 through the first through hole 401, and also serves to connect the second component 40 to the front wall 11 of the housing. Optionally, the first fastener 100a includes a screw.

[0258] It is understandable that when venting is required, the first fastener 100a can be removed. After venting is completed, the first fastener 100a can be placed in the first through hole 401 to continue to seal the first through hole 401 and reduce the entry of dust and other impurities into the battery module 100.

[0259] In some embodiments, the first through hole 401 is separate from the first insulating member 50, so that the first fastener 100a can connect to the first through hole 401.

[0260] In some embodiments, the battery pack 200 includes a seal disposed in a 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 seal includes a sealant.

[0261] In some embodiments, the battery pack 200 includes a waterproof and breathable valve (not shown), which is provided to close the first fixing hole 112. The waterproof and breathable valve can prevent external impurities from entering the first recess 301 and can be used to discharge gas inside the battery module 100.

[0262] In some embodiments, the second component 40 includes a protrusion 40b disposed within the first heat dissipation channel 40a, extending along a third direction Z. Along the third direction Z, one end face of the protrusion 40b is coplanar with the front wall 41, and the other end face is coplanar with the rear wall 42. A second opening 411 is provided on one end face, and a fourth opening 421 is provided on the other end face; the second opening 411 and the fourth opening 421 are arranged along the third direction Z.

[0263] In some embodiments, a protrusion 40b is provided on the surface of the left wall 46 facing the right wall 47. In some embodiments, a protrusion 40b is provided on the surface of the right wall 47 facing the left wall 46. In some embodiments, both the left wall 46 and the right wall 47 have protrusions 40b on their surfaces facing each other.

[0264] Please see Figure 6 , Figure 7 , Figures 29 to 30 In some embodiments, the heat-conducting element 60 includes a first portion 61 and two second portions 62, which connect the two sides of the first portion 61 along a second direction Y. The first portion 61 connects to the front wall 2105 or the rear wall 2106 of the main body. When the battery module 100 is disposed within the receiving 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 outer casing, and the other second portion 62 is disposed between the right wall 2102 and the left wall 46 of the main body. Heat from the front wall 2105 or the rear wall 2106 of the main body is conducted to the left wall 13 and the left wall 46 of the outer casing through the second portions 62, further facilitating heat dissipation.

[0265] In some embodiments, the second part 62 is connected to the left wall 13 of the housing, and another second part is connected to the left wall 46, which is beneficial for heat dissipation.

[0266] In some embodiments, the battery module 100 includes a first thermally conductive adhesive (not shown), in which one second part 62 is connected to the left wall 13 of the housing via the first thermally conductive adhesive, and the other second part 62 is connected to the left wall 46 via the first thermally conductive adhesive, which is beneficial for heat dissipation.

[0267] In some embodiments, the heat-conducting element 60 includes a third portion 63 connected to the first portion 61. The second portion 62 is disposed between the bottom wall 15 of the outer casing and the bottom wall 2103 of the main body, and the third portion 63 is connected to the bottom wall 15 of the outer casing. Heat from the front wall 2105 or the rear wall 2106 of the main body is conducted to the bottom wall 15 of the outer casing through the third portion 63, which further facilitates heat dissipation.

[0268] In some embodiments, the third part 63 is connected to the bottom wall 15 of the housing via the first thermally conductive adhesive, which facilitates heat dissipation.

[0269] In some embodiments, along the third direction Z, each main body portion 211a has heat-conducting elements 60 on both sides. Two second portions 62 located on the same side of the two heat-conducting elements 60 are located between the left wall 13 of the outer casing and the left wall 2101 of the main body, and the two second portions 62 are connected to the left wall 13 of the outer casing. Two second portions 62 located on the same side of the two heat-conducting elements 60 are located 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. Two third portions 63 located on the same side of the two heat-conducting elements 60 are located between the bottom wall 15 of the outer casing and the bottom wall 2103 of the main body, and the two third portions 63 are connected to the bottom wall 15 of the outer casing. The second portions 62 are connected to the left wall 13 and the left wall 46 of the outer casing, and the third portions 63 are connected to the bottom wall 15 of the outer casing. Both the second portions 62 and the third portions 63 can conduct heat from the main body portion 211a, further improving heat dissipation efficiency.

[0270] Please see Figure 6 and Figure 7 In some embodiments, when the battery cell 21 is not connected to the heat-conducting component 60, the second portion 62 of the heat-conducting component 60 is configured to be positioned away from the first portion 61, such that the second portion 62 is inclined relative to the first portion 61, and the 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 component 60, the battery cell 21 can slide in along the inclined surface of the second portion 62 and connect to the first portion 61, which reduces the risk of the second portion 62 scratching the battery cell housing 211 and facilitates the installation of the battery cell 21.

[0271] In some embodiments, the two second portions 62 of the heat-conducting element 60 are configured to be positioned away from the first portion 61, such that the two second portions 62 are flared. The battery cell 21 slides into the inclined surfaces of the two second portions 62 and connects to the first portion 61. When the battery cell assembly 20, the second member 40, and the heat-conducting element 60 are installed inside the housing 10, the left wall 13 and the left wall 46 of the housing can compress the inclined second portions 62, causing the second portions 62 to approach the first portion 61 and be substantially parallel to the surface of the left wall 13 of the housing. Optionally, after assembly, the second portions 62 are perpendicular to the first portion 61. This not only reduces the risk of scratching the battery cell housing 211 and facilitates the installation of the battery cell 21, but also reduces the space reserved for installing the battery cell 21, which is beneficial for reducing the size of the heat-conducting element 60, thereby reducing the space occupied by the heat-conducting element 60 and improving space utilization.

[0272] In some embodiments, before assembly, the first angle A of the second part 62 folding relative to the first part 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°.

[0273] Please see Figure 3 , Figure 28 and Figure 29 In some embodiments, the battery module 100 includes a first elastic member 230. The first elastic member 230 is disposed between the front wall 11 of the housing and the first portion 61 connecting the first cell 21a, which can provide expansion space for the cell 21 and reduce the heat dissipation of the first portion 61 connecting the first cell 21a through the front wall 11 of the housing, thereby reducing the temperature difference between multiple cells 21 and improving the performance of the battery pack 200.

[0274] In some embodiments, the first elastic member 230 is disposed between the rear wall 12 of the housing and the first portion 61 connecting the second cell 21b, which can provide expansion space for the cell 21 and reduce the heat dissipation of the first portion 61 connecting the second cell 21b through the rear wall 12 of the housing, thereby reducing the temperature difference between the multiple cells 21 and further improving the performance of the battery pack 200. Optionally, the first elastic member 230 includes foam.

[0275] Please see Figure 3 In some embodiments, the battery module 100 includes a second elastic member 240 disposed between adjacent first portions 61, which can provide expansion space for the battery cell 21. Optionally, the second elastic member 240 includes foam.

[0276] Please see Figure 28In some embodiments, after the battery module 100 is assembled, the battery module 100 is installed in the housing, the conductive component 110, the first electrical connector 120 and the second electrical connector 130 are connected to the second circuit board 210, and then the bracket 17 and the top cover 16 are installed.

[0277] Please see Figure 33 This application also provides an electrical device 300 employing the aforementioned battery pack 200. In one embodiment, the electrical device 300 of this application may be, but is not limited to, electronic devices, drones, backup power supplies, electric vehicles, electric motorcycles, electric-assisted bicycles, power tools, large household battery modules, etc.

[0278] Those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the spirit and essence of this application fall within the scope of this application's disclosure.

Claims

1. A battery module, characterized in that, include: A battery cell assembly, the battery cell assembly including a plurality of battery cells, each battery cell including a battery cell housing and electrode terminals, the electrode terminals being led out from the battery cell housing; A first component, wherein the battery cell assembly and the first component are arranged along a first direction, the first component having a first recess, and a portion of each of the electrode terminals is disposed in the first recess; A first insulating element, at least a portion of which is disposed in the gap between the electrode terminal and the first component; The second component has a first through hole, and the second component and the first component are arranged along the first direction; The second component includes a top wall and a protrusion, the first through hole penetrates the protrusion, and the protrusion extends from the top wall along the first direction; The first recess includes a first opening toward the second member, and a first space exists between the top wall and the first opening along the first direction; The first through hole communicates with the first recess through the first space.

2. The battery module as described in claim 1, characterized in that, The battery cell assembly includes a first group of battery cells and a second group of battery cells, which are arranged along a second direction. The first group of battery cells includes at least two cells stacked along a third direction, and the second group of battery cells includes at least two cells stacked along the third direction. The first direction, the second direction, and the third direction are perpendicular to each other. The second component includes a left wall and a right wall arranged along the second direction, and a top wall connects the left wall and the right wall. The left wall and the right wall are located between the first group of battery cells and the second group of battery cells.

3. The battery module as described in claim 2, characterized in that, Each of the battery cells includes an electrode assembly, and the battery cell housing includes a main body portion and a sealing portion. The electrode assembly is disposed in the main body portion. The sealing portion includes a first sealing portion. The electrode terminals are connected to the electrode assembly and extend from the first sealing portion. Each first sealing portion is at least partially located in the first recess. The first insulating element covers at least a portion of each of the first sealing portions.

4. The battery module as described in claim 3, characterized in that, Along the second direction, at least a portion of the protrusion is located between the first sealing portion of the first group of cells and the first sealing portion of the second group of cells.

5. The battery module as described in any one of claims 2 to 4, characterized in that, The second component includes a front wall and a rear wall disposed along the third direction, and the top wall connects the front wall and the rear wall.

6. The battery module as described in claim 5, characterized in that, The second component is a heat sink, which includes a first heat sink channel that communicates with the outside; along the third direction, the first heat sink channel passes through the front wall and the rear wall.

7. The battery module as described in any one of claims 1 to 6, characterized in that, The first component includes a base and four first sidewalls, the base and the four first sidewalls forming the first recess.

8. The battery module as described in any one of claims 1 to 7, characterized in that, The first through hole is configured to provide a first insulating material to the first recess through the first through hole to form the first insulating element.

9. A battery pack, characterized in that, Includes a battery module, a housing, and a top cover as described in any one of claims 1 to 8, wherein the housing and the top cover form a receiving space, and the battery module is located within the receiving space.

10. An electrical appliance, characterized in that, Includes the battery pack as described in claim 9.

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