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

Abstract

The invention discloses a battery module and a manufacturing method thereof, a battery pack and electric equipment. The battery module comprises a battery cell assembly, a first component, a first detection assembly, a first bonding piece and a filling piece, the battery cell assembly comprises a plurality of battery cells, and each battery cell comprises a battery cell shell and an electrode terminal. The battery core shell and the first component are arranged along a first direction, and the first component is provided with a first opening; the first detection assembly comprises a first connection part and a first detection part. One end of the first connecting part is arranged on one side, deviating from the battery cell shell, of the first component, and the other end penetrates through the first opening and is connected with the first detection part; the first bonding piece is connected to the battery cell shell and is connected to the first detection part; the filling piece abuts against the first connecting part. The first detection part is connected with the battery cell shell through the first bonding piece and abuts against the first connection part through the filling piece, the position of the first connection part is limited, movement of the first detection part and the first connection part is reduced, and the detection accuracy is improved.

Description

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

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

[0002] Battery modules are currently widely used in drones, electric vehicles, smart energy storage devices, and other fields. To facilitate the management of battery modules, it is necessary to detect the data of the battery cells within the battery modules. However, current detection methods suffer from inaccurate measurements.

[0003] Summary of the Invention

[0004] In view of this, it is necessary to provide a battery module and a manufacturing method thereof, a battery pack and an electrical device to solve the problem of inaccurate measurement.

[0005] An embodiment of the present application provides a battery module, comprising a cell assembly, a first component, a first detection assembly, a first adhesive and a filling member. The cell assembly comprises a plurality of cells, each cell comprising a cell housing and an electrode terminal. The cell housing and the first component are arranged along a first direction, and the first component is provided with a first opening. The first detection assembly comprises a first connecting portion and a first detection portion. One end of the first connecting portion is provided on a side of the first component away from the cell housing, and the other end passes through the first opening and is connected to the first detection portion. The first adhesive is connected to the cell housing, and the first adhesive is connected to the first detection portion. The filling member abuts against the first connecting portion. The first detection portion of the present application is connected to the cell housing through the first adhesive, and abuts against the first connecting portion through the filling member, thereby limiting the position of the first connecting portion, reducing the movement of the first detection portion and the first connecting portion, and improving the accuracy of detection.

[0006] Optionally, in some embodiments of the present application, at least a portion of the filling member is disposed at the first opening, or, along the first direction, the filling member is located between the first opening and the battery cell casing.

[0007] Optionally, in some embodiments of the present application, the first opening includes a first sub-opening. At least a portion of the filling member is disposed in the first sub-opening. The filling member limits movement of the first connecting portion in the first sub-opening, thereby improving detection accuracy.

[0008] Optionally, in some embodiments of the present application, the first opening includes a second sub-opening connected to the first sub-opening. Along the second direction, the width of the second sub-opening is smaller than the width of the first sub-opening. A portion of the first connecting portion is disposed within the second sub-opening, with the first direction perpendicular to the second direction. A filler member confines the portion of the first connecting portion within the second sub-opening, thereby reducing movement of the first connecting portion and improving detection accuracy.

[0009] Optionally, in some embodiments of the present application, the filling member is provided separately from the first adhesive member.

[0010] Optionally, in some embodiments of the present application, the first connecting portion includes a first section, a second section, and a third section. The first section is disposed on a side of the first component facing away from the battery cell housing. The second section is disposed at the first opening and connects the first section and the third section. The third section is connected to the first detection portion.

[0011] Optionally, in some embodiments of the present application, the filling piece abuts against the second section to limit the position of the second section, which is beneficial to improving the accuracy of detection.

[0012] Optionally, in some embodiments of the present application, the filling piece abuts against the third section to limit the position of the third section, which is beneficial to improving the accuracy of detection.

[0013] Optionally, in some embodiments of the present application, along the first direction, the projection of the first detection portion is located within the projection of the filling piece, which is conducive to fixing the position of the first detection portion.

[0014] Optionally, in some embodiments of the present application, along the first direction, the battery cell housing includes a first wall facing the first component, and the first detection portion is provided on the first wall and can measure the temperature of the first wall.

[0015] Optionally, in some embodiments of the present application, the battery cell housing includes a main body and a sealing portion. The battery cell includes an electrode assembly, which is disposed in the main body. The main body includes a first wall. The sealing portion includes a first sealing portion. The first sealing portion is connected to the first wall. The electrode terminal is connected to the electrode assembly and extends from the first sealing portion. The first member has a plurality of second openings. The electrode terminal extends through the second openings and is disposed on a side of the first member facing away from the battery cell housing.

[0016] Optionally, in some embodiments of the present application, one of the second openings is connected to the first opening, which facilitates the setting of the first opening and helps to reduce the impact of the setting of the first opening on the structural strength of the first component.

[0017] Optionally, in some embodiments of the present application, the battery cell includes a first battery cell, the first detection portion is provided on a first wall of the first battery cell, and the first adhesive connects the first sealing portion of the first battery cell and the first detection portion.

[0018] Optionally, in some embodiments of the present application, multiple battery cells are stacked along the second direction. Along the second direction, the projection of the first adhesive overlaps the projection of the electrode terminal of the first battery cell. The temperature at the electrode terminal is typically the highest temperature in the battery cell. Connecting the first detection unit to the first sealing portion at the electrode terminal via the first adhesive can further improve measurement accuracy.

[0019] Optionally, in some embodiments of the present application, along the second direction, the filling piece abuts against the electrode terminal of the first battery cell, which is conducive to limiting the position of the filling piece.

[0020] Optionally, in some embodiments of the present application, the electrode terminals of the first battery cell are separated from the first detection component to improve protection of the electrode terminals of the first battery cell.

[0021] Optionally, in some embodiments of the present application, the battery module includes a fixing member. The fixing member is disposed on a side of the first member facing away from the cell housing. A portion of the first connecting portion is disposed between the first member and the fixing member. This fixes the position of the portion of the first connecting portion, reduces movement of the first connecting portion, and minimizes the impact on the first detection unit.

[0022] Optionally, in some embodiments of the present application, along the first direction, the filling piece does not extend beyond the side surface of the first component facing away from the battery cell housing, which is beneficial for the filling piece to fix the first detection component and reduce the filling piece from being squeezed by external force.

[0023] Optionally, in some embodiments of the present application, the first adhesive includes thermally conductive adhesive, which is beneficial for conducting the temperature of the battery core to the first detection part, thereby improving the accuracy of the detected temperature.

[0024] Optionally, in some embodiments of the present application, the first detection component is configured to detect the temperature of the battery cell.

[0025] Optionally, in some embodiments of the present application, the first component includes a circuit board.

[0026] Optionally, in some embodiments of the present application, the battery module includes a busbar. The busbar is disposed on a side of the first component away from the cell housing, and the battery cells are connected via the busbar. The first component includes a plurality of second openings, and the busbar is connected to the electrode terminals through the second openings.

[0027] Another embodiment of the present application provides a battery module, including a cell assembly, a first component, a first detection assembly, a first adhesive and a filling member. The cell assembly includes a plurality of cells, each cell including a cell housing and an electrode terminal. The cell housing and the first component are arranged along a first direction, and the first component is provided with a first opening. The first detection assembly includes a first connecting portion and a first detection portion, one end of the first connecting portion is provided on a side of the first component away from the cell housing, and the other end passes through the first opening and is connected to the first detection portion. The first adhesive is connected to the cell housing, and the first adhesive is connected to the first detection portion. At least a portion of the filling member is provided at the first opening, or, along the first direction, the filling member is located between the first opening and the cell housing, and the filling member is configured to limit the movement of the first detection assembly. The first detection portion of the present application is connected to the cell housing through the first adhesive, and the movement of the first detection assembly is limited by the filling member, thereby improving the accuracy of detection.

[0028] One embodiment of the present application provides a method for manufacturing a battery module according to any of the above embodiments, comprising the following steps: disposing a first detection portion between a cell housing and a first component through a first opening; disposing a filler at least partially within the first opening, or disposing the filler at least partially between the first opening and the cell housing along a first direction, the filler restricting movement of the first connection portion; disposing a first adhesive member within the cell housing, and connecting the first detection portion to the cell housing via the first adhesive member.

[0029] An embodiment of the present application provides a battery pack, comprising the battery module according to any one of the above embodiments.

[0030] Optionally, in some embodiments of the present application, the battery pack includes a conductive component and a second circuit board, the conductive component connects the first component and the second circuit board, and the conductive component is configured to transmit electrical signals of the battery cell to the second circuit board.

[0031] An embodiment of the present application provides an electric device, comprising the battery pack according to any one of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG1 is an exploded schematic diagram of a battery pack in some embodiments.

[0033] FIG2 is a schematic diagram showing a partial structure of a battery module in some embodiments.

[0034] FIG3 is a schematic diagram showing an exploded view of a portion of the structure of the battery module in FIG2 .

[0035] FIG4 is a schematic diagram showing a partial structure of a battery module in some embodiments.

[0036] FIG5 is a schematic diagram showing a partial structure of the battery module in FIG4 from another perspective.

[0037] FIG6 is an enlarged schematic diagram showing a partial structure of the battery module in FIG5 .

[0038] FIG7 is a schematic cross-sectional view showing a partial structure of the battery module in FIG5 .

[0039] FIG8 is an enlarged schematic diagram showing a partial structure of the battery module in FIG7 .

[0040] FIG9 is a schematic diagram showing a partial structure of a battery module in some other embodiments.

[0041] FIG10 is a schematic cross-sectional view showing a partial structure of a battery module in some other embodiments.

[0042] FIG. 11 shows an enlarged schematic diagram of the embodiment in FIG. 10 .

[0043] FIG12 is a schematic diagram showing the structure of a battery cell in some embodiments.

[0044] FIG13 shows a schematic structural diagram of the first component in some embodiments.

[0045] FIG14 shows a schematic structural diagram of the first detection component in some embodiments.

[0046] FIG15 shows a schematic structural diagram of the first detection component in some other embodiments.

[0047] FIG16 is a schematic cross-sectional view showing a partial structure of the battery module in FIG2 .

[0048] FIG17 is an enlarged schematic diagram showing a part of the structure in FIG16 .

[0049] FIG18 is a schematic structural diagram of the second component in some embodiments.

[0050] FIG19 is a schematic structural diagram of the second component from another perspective in some embodiments.

[0051] FIG20 is a schematic flow chart showing a method for manufacturing a battery module in some embodiments.

[0052] FIG21 shows a schematic structural diagram of electrical equipment in some embodiments.

[0053] Description of the main component symbols: Battery module 100 Battery cell assembly 10 Battery cell 11 First battery cell 11a Battery cell housing 111 Main body 111a Sealing portion 111b Gap 111c First wall 1111 First sealing portion 1112 Second wall 1113 Third wall 1114 Fourth wall 1115 Fifth wall 1116 Sixth wall 1117 First component 20 First opening 20a Second opening 20b First sub-opening 201 Second sub-opening 202 First notch 20c First conductive sheet 21 Second conductive sheet 22 Third opening 23 Fourth opening 24 First detection component 30 First detection portion 31 First connecting portion 32 First section 321 Second section 322 Third section323 First Adhesive Component 40 Filler 50 Fixing Component 101 Second Detection Assembly 102 Second Connecting Portion 102a Second Detection Portion 102b First Group of Battery Cells 103 Second Group of Battery Cells 104 Second Component 60 First Recess 601 Base 61 Connecting Protrusion 611 First Sidewall 62 First Limiting Portion 63 Second Limiting Portion 64 Third Limiting Portion 65 Fourth Limiting Portion 66 Fifth Limiting Portion 67 Sixth Limiting Portion 68 First Insulator 70 Heat Sink 80 First Heat Dissipation Channel 80a First Through Hole 801 Conductive Component 90 Second Circuit Board 110 First Electrical Connector 120 Second Electrical Connector 130 Second Insulator 140 Third Insulator 150 Fourth Insulator 160 Battery Pack1000 Housing 170 Housing opening 170a Housing front wall 171 Housing rear wall 172 Housing left wall 173 Housing right wall 174 Housing bottom wall 175 Top cover 176 Heat conducting element 180 Electrical device 2000 First direction X Second direction Y Third direction Z

[0054] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0056] When a component is referred to as being “disposed on” another component, it can be directly disposed on the other component or there may be a component intervening therebetween. When a component is referred to as being “connected to” another component, it can be directly connected to the other component or there may be a component intervening therebetween.

[0057] It can be understood that the term "perpendicular" is used to describe the ideal state between two components. In actual production or use, there may be a state that is approximately perpendicular between the two components. For example, combined with numerical descriptions, perpendicularity can refer to the angle between two straight lines being between 90°±10°, perpendicularity can also refer to the dihedral angle between two planes being between 90°±10°, and perpendicularity can also refer to the angle between a straight line and a plane being between 90°±10°. The two components described as "perpendicular" may not be absolute straight lines or planes, but may be roughly straight lines or planes. From a macroscopic perspective, a component can be considered a "straight line" or a "plane" if the overall extension direction is a straight line or a plane.

[0058] The terms "left", "right", "top", "bottom", "front", "back" and similar expressions used herein are for illustrative purposes only and are not intended to limit the present application.

[0059] The term "parallel" is used to describe the ideal state between two components. In actual production or use, there may be a state of approximate parallelism between the two components. For example, combined with numerical descriptions, parallel can refer to the angle between two straight lines being in the range of 180°±10°, parallel can also refer to the dihedral angle between two planes being in the range of 180°±10°, and parallel can also refer to the angle between a straight line and a plane being in the range of 180°±10°. The two components described as "parallel" may not be absolute straight lines or planes, but may be roughly straight lines or planes. From a macroscopic perspective, a component can be considered a "straight line" or a "plane" if its overall extension direction is a straight line or a plane.

[0060] Unless otherwise defined, the term "plurality" herein, when used to describe the number of components, specifically means that the components are two or more.

[0061] In the first direction X, it includes the first direction X and a direction opposite to the first direction X; in the second direction Y, it includes the second direction Y and a direction opposite to the second direction Y; in the third direction Z, it includes the third direction Z and a direction opposite to the third direction Z.

[0062] An embodiment of the present application provides a battery module, comprising a cell assembly, a first component, a first detection assembly, a first adhesive and a filling member. The cell assembly comprises a plurality of cells, each cell comprising a cell housing and an electrode terminal. The cell housing and the first component are arranged along a first direction, and the first component is provided with a first opening. The first detection assembly comprises a first connecting portion and a first detection portion. One end of the first connecting portion is provided on a side of the first component away from the cell housing, and the other end passes through the first opening and is connected to the first detection portion. The first adhesive is connected to the cell housing, and the first adhesive is connected to the first detection portion. The filling member abuts against the first connecting portion. The first detection portion of the present application is connected to the cell housing through the first adhesive, and abuts against the first connecting portion through the filling member, thereby limiting the position of the first connecting portion, reducing the movement of the first detection portion and the first connecting portion, and improving the accuracy of detection.

[0063] The following embodiments will be described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0064] Referring to Figures 2 to 17, an embodiment of the present application provides a battery module 100, including a battery cell assembly 10 and a first detection assembly 30. The battery cell assembly 10 includes a plurality of battery cells 11, and the first detection assembly 30 is configured to detect information of at least one of the battery cells 11.

[0065] In some embodiments, each battery cell 11 includes a battery cell case 111 and an electrode terminal 112 .

[0066] In some embodiments, the battery module 100 further includes a first member 20 , and the first member 20 is provided with a first opening 20 a . The cell housing 111 and the first member 20 are arranged along a first direction X. Along the first direction X, the first opening 20 a penetrates the first member 20 .

[0067] In some embodiments, the first component 20 includes a circuit board. Optionally, the circuit board includes a flexible printed circuit (FPC). Optionally, the circuit board includes a printed circuit board (PCB).

[0068] In some embodiments, the battery module 100 further includes electronic components disposed in the first component 20 , and the electronic components can collect information of the battery cell assembly 10 or control the battery cell assembly.

[0069] In some embodiments, the first member 20 includes an insulating support.

[0070] In some embodiments, the first detection assembly 30 includes a first detection portion 31 and a first connection portion 32. One end of the first connection portion 32 is located on a side of the first component 20 away from the cell housing 111, and the other end passes through the first opening 20a and is connected to the first detection portion 31.

[0071] In some embodiments, the battery module 100 further includes a filling member 50 , which is configured to limit the movement of the first detection assembly 30 within the first opening 20 a .

[0072] In some embodiments, the filling member 50 abuts against the first connection portion 32 . Abutment refers to the presence of an interaction force between the two components. For example, the filling member 50 applies pressure to the first connection portion 32 to limit the position of the first connection portion 32 .

[0073] In some embodiments, at least a portion of the filling member 50 is disposed at the first opening 20 a , or along the first direction X, the filling member 50 is located between the first opening 20 a and the cell casing 111 .

[0074] In some embodiments, the filler 50 is a flexible structure with elasticity to reduce the risk of damaging the first detection portion 31 or the battery cell 11. The filler 50 can be elastically compressed and positioned in the first opening 20a, which helps to fix the position of the filler 50. Optionally, the filler 50 includes thermoplastic polyurethane (TPU), which can enhance the bonding strength between the first adhesive member 40 and the filler 50.

[0075] In some embodiments, the filling member 50 may be disposed in the first opening 20 a by interference fit.

[0076] In some embodiments, the filler 50 can be fixed to the first component 20 by snaps, screws, etc.

[0077] In some embodiments, the battery module 100 further includes a first adhesive member 40 connected to the cell housing 111 and the first detection unit 31. The first adhesive member 40 fixes the first detection unit 31 to the cell housing 111, restricting movement of the first detection unit 31.

[0078] In some embodiments, the first adhesive 40 includes thermally conductive adhesive, which facilitates conducting the heat of the battery cell 11 to the first detection unit 31 , thereby improving the accuracy of temperature detection.

[0079] In some embodiments, the thermal conductivity of the thermal conductive adhesive is 0.8-3.0 W / (m·K), which is beneficial for the thermal conductive adhesive to transfer the heat of the battery cell 11 to the first detection unit 31 .

[0080] The first detection part 31 of the present application is connected to the battery cell housing 111 through the first adhesive 40 and abuts against the first connection part 32 through the filling part 50, thereby limiting the position of the first connection part 32, reducing the movement of the first detection part 31 and the first connection part 32, and improving the accuracy of detection.

[0081] In some embodiments, the first detection unit 31 is configured to detect the temperature of the battery cell 11. In other embodiments, the first detection unit 31 may also be configured to detect other data of the battery cell 11, such as current, voltage, resistance, electrolyte, moisture, etc. This application uses the detection of the temperature of the battery cell 11 as an example for description.

[0082] In some embodiments, the first detection unit 31 includes a temperature sensor, which can sense temperature and convert it into a usable output signal.

[0083] In some embodiments, the first detection portion 31 is wrapped by the first adhesive 40 , which helps to improve the fixation of the first detection portion 31 .

[0084] 8 , in some embodiments, the cell housing 111 includes a first wall 1111 facing the first component 20 , and the first detection unit 31 is disposed on the first wall 1111 . The first detection unit 31 can measure the temperature of the first wall 1111 .

[0085] In some embodiments, the first detection portion 31 is fixedly connected to the first wall 1111 via a first adhesive 40. The first detection portion 31 is connected to the first wall 1111 to measure the temperature of the battery cell 11. Optionally, the first detection portion 31 includes a temperature sensor. Optionally, the first detection portion 31 is waterproof.

[0086] Referring to Figure 12 , in some embodiments, each battery cell 11 includes an electrode assembly (not shown) and an electrode terminal 112 . The battery cell housing 111 includes a main body 111a and a sealing portion 111b . The electrode assembly is disposed within the main body 111a . The main body 111a includes a first wall 1111 , and the sealing portion 111b includes a first sealing portion 1112 , which is connected to the first wall 1111 . The electrode terminal 112 is connected to the electrode assembly and extends from the first sealing portion 1112 .

[0087] In some embodiments, the battery cell 11 includes a first battery cell 11a, and the first detection unit 31 is disposed on a first wall 1111 of the first battery cell 11a. Optionally, the first battery cell 11a may be any one of the plurality of battery cells 11.

[0088] In some embodiments, multiple battery cells 11 are stacked along the second direction Y. The first battery cell 11a is the center-most battery cell along the second direction Y. Cells closer to the center typically have higher temperatures. For example, if the battery cell assembly 10 includes seven battery cells, the first battery cell 11a may be the fourth battery cell. For example, if the battery cell assembly 10 includes six battery cells, the first battery cell 11a may be the fourth or fifth battery cell.

[0089] In some embodiments, the filling member 50 abuts against the electrode terminal 112 of the first battery cell 11 a , which helps to limit the position of the filling member 50 .

[0090] In some embodiments, the electrode terminal 112 of the first battery cell 11 a is separated from the first detection assembly 30 , thereby improving protection of the electrode terminal 112 of the first battery cell 11 a .

[0091] In some embodiments, multiple battery cells 11 are stacked along the second direction Y. The projection of the first adhesive 40 overlaps the projection of the electrode terminal 112 of the first battery cell 11a along the second direction Y. The temperature at the electrode terminal 112 is typically the highest temperature in the battery cell 11. Connecting the first detection unit 31 to the first sealing portion 1112 at the electrode terminal 112 via the first adhesive 40 can further improve measurement accuracy.

[0092] In some embodiments, the first adhesive 40 connects the first sealing portion 1112 of the first battery cell 11 a and the first detection portion 31 . The first detection portion 31 is connected to the first sealing portion 1112 , and the temperature of the first sealing portion 1112 can be measured.

[0093] The heat of the electrode terminal 112 is transferred to the first sealing portion 1112 . The temperature of the first sealing portion 1112 is the highest in the battery cell 11 , which is beneficial for improving the accuracy of the measurement.

[0094] In some embodiments, the first adhesive 40 connects the first sealing portion 1112 of the first battery cell 11a and the first wall 1111. The first detection portion 31 is connected to the first sealing portion 1112 of the first battery cell 11a, and the first detection portion 31 is also connected to the first wall 1111. The first detection portion 31 can simultaneously detect the temperature of the first sealing portion 1112 and the first wall 1111, and transmit the higher temperature.

[0095] Referring to Figures 6 and 13 , in some embodiments, the first opening 20a includes a first sub-opening 201, and at least a portion of the filler 50 is disposed within the first sub-opening 201. The first connecting portion 32 is disposed within the first sub-opening 201, and the filler 50 abuts against the first connecting portion 32. The filler 50 restricts movement of the first connecting portion 32 within the first sub-opening 201, thereby improving detection accuracy.

[0096] In some embodiments, the first opening 20a includes a second sub-opening 202 that communicates with the first sub-opening 201. Along the second direction Y, the width h1 of the second sub-opening 202 is less than the width h2 of the first sub-opening 201. At least a portion of the filler 50 is disposed within the first sub-opening 201, and a portion of the first connection portion 32 is disposed within the second sub-opening 202. The filler 50 confines a portion of the first connection portion 32 within the second sub-opening 202, reducing movement of the first connection portion 32 and facilitating improved detection accuracy. The second direction Y is perpendicular to the first direction X. In some embodiments of the present application, the second direction Y may be the thickness direction of the battery cell 11.

[0097] In some embodiments, the first component 20 is provided with a plurality of second openings 20 b , and the electrode terminal 112 passes through one of the second openings 20 b and is provided on a side of the first component 20 facing away from the cell casing 111 .

[0098] In some embodiments, the first member 20 is provided with a plurality of second openings, and the battery module includes a busbar (not shown) disposed on a side of the first member 20 away from the cell housing 111. The electrode terminals 112 are connected in series and / or in parallel via the busbar. Optionally, the cell 11 comprises a prismatic cell. Optionally, the cell comprises a cylindrical cell.

[0099] In some embodiments, one of the second openings 20 b is connected to the first opening 20 a , which facilitates the provision of the first opening 20 a and helps reduce the impact of the provision of the first opening 20 a on the structural strength of the first component 20 .

[0100] In some embodiments, at least a portion of the filling member 50 is located in the second opening 20 b communicating with the first opening 20 a and abuts against the electrode terminal 112 passing through the second opening 20 b .

[0101] In some embodiments, the second opening 20b is connected to the first sub-opening 201, and the second sub-opening 202 is connected to the second opening 20b through the first sub-opening 201. Optionally, the electrode terminal 112 of the first battery cell 11a passes through the second opening 20b connected to the first opening 20a.

[0102] Referring to Figures 6, 8, 9, 11, and 14 to 17, in some embodiments, the first connecting portion 32 includes a first section 321, a second section 322, and a third section 323. The first section 321 is located on a side of the first component 20 facing away from the battery cell housing 111, the second section 322 is located in the first opening 20a, the second section 322 connects the first section 321 and the third section 323, and the third section 323 is connected to the first detecting portion 31.

[0103] In some embodiments, the first section 321 is located outside the first opening 20 a .

[0104] In some embodiments, the third section 323 is located outside the first opening 20 a .

[0105] In some embodiments, the filler 50 is configured to confine the second segment 322 within the first opening 20 a .

[0106] In some embodiments, the filler 50 is configured to confine the second segment 322 within the second sub-opening 202 .

[0107] In some embodiments, the filler 50 abuts against the second section 322 .

[0108] In some embodiments, the filler 50 abuts against the third section 323 .

[0109] In some embodiments, the filler 50 abuts against the second section 322 and the third section 323 .

[0110] Referring to Figure 6, in some embodiments, the battery module 100 includes a fixing member 101, which is disposed on a side of the first member 20 facing away from the cell housing 111. A portion of the first connecting portion 32 is disposed between the first member 20 and the fixing member 101, thereby fixing the position of the first connecting portion 32, reducing movement of the first connecting portion 32 and minimizing the impact on the first detecting portion 31. Optionally, at least a portion of the first segment 321 is disposed between the first member 20 and the fixing member 101. Optionally, the fixing member 101 includes foam and glue, and the glue secures the foam to the first connecting portion 32, thereby enhancing protection for the first connecting portion 32.

[0111] In some embodiments, the fixing member 101 is arranged on the side of the first component 20 away from the battery cell shell 111 to fix the position of the first section 321. By limiting the positions of the first section 321, the second section 322 and the third section 323, the overall movement of the first connecting portion 32 is reduced, which is conducive to improving the accuracy of detection.

[0112] In some embodiments, along the first direction X, the filler 50 does not extend beyond the surface of the first component 20 facing away from the cell housing 111 , which helps the filler 50 fix the first detection assembly 30 and reduces the risk of the filler 50 being squeezed by external forces.

[0113] Referring to Figures 8 and 15 , in some embodiments, the first segment 321 is connected to the side of the first component 20 facing away from the battery cell housing 111, the second segment 322 is located in the second sub-opening 202, and the end of the third segment 323 connected to the first detection portion 31 is substantially parallel to the first wall 1111. Along the first direction X, one end of the filler 50 connects the first adhesive 40 and the first detection portion 31, thereby restricting the position of the first detection portion 31 so that the first detection portion 31 is located on the first wall 1111 and connected to the first sealing portion 1112. The other end of the filler 50 is located in the first sub-opening 201, restricting the second segment 322 to the second sub-opening 202. The filler 50 abuts against the third segment 323, restricting the position of the third segment 323.

[0114] In some embodiments, along the first direction X, the projection of the first detection portion 31 is located within the projection of the filling piece 50 , which is beneficial for fixing the position of the first detection portion 31 .

[0115] In some embodiments, along the first direction X, one end of the filling member 50 is connected to the first adhesive member 40 and the first detection portion 31, and the other end is arranged at the first sub-opening 201 and the second sub-opening 202, so that the filling member 50 abuts against the second section 322 and the third section 323, which can further limit the movement of the second section 322 in the second sub-opening 202.

[0116] Referring to Figure 9 , in some embodiments, along the first direction X, the filler 50 is positioned between the first opening 20a and the battery cell casing 111. One end of the filler 50 connects to the first adhesive 40 and the first detection portion 31, restricting the position of the first detection portion 31 so that the first detection portion 31 is located on the first wall 1111 and connected to the first sealing portion 1112. The other end of the filler 50 is spaced apart from the first opening 20a. The filler 50 abuts against the third segment 323, restricting the position of the third segment 323.

[0117] In some embodiments, along the first direction X, a portion of the filling member 50 is located between the first opening 20 a and the cell casing 111 , and a portion of the filling member 50 is located within the first opening 20 a .

[0118] Referring to Figure 11 , in some embodiments, the filler 50 and the first adhesive 40 are provided separately. The first segment 321 connects to the side of the first component 20 facing away from the cell housing 111. The second segment 322 is provided in the second sub-opening 202. The end of the third segment 323 connected to the first detection portion 31 is substantially perpendicular to the first wall 1111, reducing the bending of the first connection portion 32 and facilitating connection of the first detection portion 31 to the first wall 1111 and / or the first sealing portion 1112.

[0119] In some embodiments, the filling member 50 is arranged at the first sub-opening 201 to limit the second section 322 to the second sub-opening 202. The fixing member 101 is arranged on the side of the first component 20 away from the battery cell shell 111 to fix the position of the first section 321. By limiting the position of the first section 321 and the second section 322, the movement of the first connecting portion 32 is reduced, which helps to improve the accuracy of detection.

[0120] In some embodiments, the filling member 50 also abuts against a portion of the third section 323 to limit the position of the portion of the third section 323 , further reducing the movement of the first connecting portion 32 and improving the accuracy of detection.

[0121] In some embodiments, along the first direction X, the filling member 50 is disposed in the first sub-opening 201 and the second sub-opening 202 , such that the filling member 50 abuts against the second section 322 , further restricting the second section 322 from moving within the second sub-opening 202 .

[0122] Referring to Figures 4, 5, and 13, in some embodiments, the first member 20 has a first notch 20c, and the battery module 100 includes a second detection assembly 102, which is connected to the outermost battery cell 11. The second detection assembly 102 includes a second connecting portion 102a and a second detecting portion 102b. One end of the second connecting portion 102a is connected to the side of the first member 20 facing away from the battery cell housing 111, and the other end is disposed between the first member 20 and the battery cell housing 111 through the first notch 20c and connected to the second detecting portion 102b. The second detecting portion 102b is connected to the battery cell housing 111.

[0123] In some embodiments, the second detection unit 102b is configured to detect the temperature of the battery cell 11. In other embodiments, the second detection unit 102b may also be configured to detect other data of the battery cell 11, such as current, voltage, resistance, electrolyte, moisture, etc.

[0124] 2 to 4 and 12 to 14 , in some embodiments, the battery module 100 includes a second member 60 disposed on a side of the first member 20 facing away from the cell casing 111. The second member 60 has a first recess 601, and a portion of each electrode terminal 112 is disposed in the first recess 601.

[0125] The battery module 100 further includes a first insulating member 70 , at least part of which is disposed in the gap between the electrode terminal 112 and the second component 60 , thereby enhancing the sealing and insulating protection of the electrode terminal 212 and thereby enhancing the sealing and insulating protection of the battery module 100 .

[0126] In some embodiments, the first insulating member 70 covers at least a portion of each first sealing portion 1112 , further enhancing the sealing and insulating protection of the electrode terminal 212 , thereby further enhancing the sealing and insulating protection of the battery module 100 .

[0127] In some embodiments, the first insulating member 70 covers the filler 50 and a portion of the first connecting portion 32 to seal and insulate the filler 50 and a portion of the first connecting portion 32. Optionally, the first insulating member 70 covers the first segment 321, the second segment 322, and a portion of the third segment 323.

[0128] In some embodiments, the first insulating member 70 covers the first adhesive member 40 to seal the first adhesive member 40 .

[0129] In some embodiments, the first insulating member 70 is configured to be formed by solidifying a first insulating material, by placing the first insulating material in the first recess 601 and then solidifying the first insulating material.

[0130] In some embodiments, the first insulating member 70 is formed by placing the battery module 100 upside down and injecting a first insulating material into the first recess 601 and curing it, wherein the upside-down placement refers to rotating the battery module 100 180 degrees in the first direction X and then placing it according to the diagram shown in Figure 2.

[0131] In some embodiments, the first insulating material includes, but is not limited to, polyurethane glue, epoxy glue, and silicone glue. Alternatively, the first insulating material includes potting glue. Alternatively, the first insulating material includes foam glue.

[0132] In some embodiments, the battery module 100 includes a heat sink 80 , and the heat sink 80 includes a first heat dissipation channel 80 a . The first heat dissipation channel 80 a is connected to the outside, which is beneficial for dissipating heat from the battery cell assembly 10 .

[0133] In some embodiments, the battery cell assembly 10 includes a first group of battery cells 103 and a second group of battery cells 104. The first group of battery cells 103 includes at least two battery cells 11 stacked along a second direction Y, and the second group of battery cells 104 includes at least two battery cells 11 stacked along the second direction Y. The first group of battery cells 103 and the second group of battery cells 104 are arranged along a third direction Z. The heat sink 80 is disposed between the first group of battery cells 103 and the second group of battery cells 104 to dissipate heat from the first group of battery cells 103 and the second group of battery cells 104. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0134] In some embodiments, the heat dissipation member 80 is provided with a first through hole 801 , and the first insulating material is provided to the first recess 601 through the first through hole 801 to form the first insulating member 70 .

[0135] In some embodiments, the first member 20 includes a plurality of second openings 20 b , which are spaced apart along the second direction Y, and each second opening 20 b extends along the third direction Z. The electrode terminal 112 of an adjacent battery cell 11 passes through the second opening 20 b , and the electrode terminal 112 of another battery cell 11 passes through another second opening 20 b . The two electrode terminals 112 are stacked and connected to the first member 20 .

[0136] In some embodiments, the battery module 100 includes a plurality of first conductive sheets 21 disposed on a first member 20. The first conductive sheets 21 are connected to the first member 20. The electrode terminals 112 of adjacent battery cells 11 pass through the second openings 20b, and the electrode terminal 112 of another battery cell 11 passes through another second opening 20b. The two electrode terminals 112 are stacked and welded to the first conductive sheets 21. Welding methods include, but are not limited to, laser welding and ultrasonic welding. In other embodiments, the electrode terminals 112 and the first conductive sheets 21 may be connected using other methods, such as conductive adhesive.

[0137] In one embodiment, the first conductive sheet 21 is configured to collect electrical signal information of the battery cell.

[0138] In one embodiment, the first component 20 is further provided with a second conductive sheet 22. The second conductive sheet 22 connects the electrode terminals 112 of the first group of battery cells 103 and the electrode terminals 112 of the second group of battery cells 104, and is used to transfer current from the first group of battery cells 103 to the second group of battery cells 104, thereby achieving a series connection or a parallel connection between the first group of battery cells 103 and the second group of battery cells 104.

[0139] In some embodiments, the first component 20 further includes a third opening 23 . The third opening 23 can facilitate the first insulating material to flow into the first recess 601 , thereby improving the efficiency of injecting the first insulating material into the first recess 601 .

[0140] In some embodiments, the first component 20 is further provided with a fourth opening 24 . Along the third direction Z, the fourth opening 24 is provided at a middle position of the first component 20 .

[0141] The battery module 100 further includes a conductive assembly 90 disposed in the fourth opening 24. The conductive assembly 90 is configured to transmit electrical signal information from the battery cell 11 and / or transmit power from the battery cell assembly 10 to the second circuit board 110. In this embodiment, the conductive assembly 90 is configured to transmit electrical signal information from the battery cell 11 as an example. Electrical signal information includes, but is not limited to, voltage, current, temperature, and resistance.

[0142] Referring to Figures 2 to 4 , in some embodiments, the battery module 100 further includes a first electrical connector 120 and a second electrical connector 130 . The first electrical connector 120 and the second electrical connector 130 are connected to external devices to enable input or output of electrical energy. Optionally, the first electrical connector 120 and the second electrical connector 130 are welded to the first component 20 . Optionally, the first electrical connector 120 comprises a copper busbar, and the second electrical connector 130 comprises a copper busbar.

[0143] Referring to Figures 2 to 4 and 12 to 19 , in some embodiments, the outer surface of the second member 60 is insulating. Alternatively, the second member 60 is made of an insulating material. Alternatively, the second member 60 is made of a metal material and an insulating material, and the insulating material may cover the outer surface of the metal material.

[0144] In some embodiments, the second member 60 includes a base 61, which is disposed on a side of the first member 20 facing away from the cell casing 111. A connecting protrusion 611 is provided on the side of the base 61 facing the first member 20. The connecting protrusion 611 connects to the first member 20, creating a gap between the first member 20 and the base 61. This facilitates the flow of the first insulating material into the gap, covering the stacked portion of the electrode terminals 112, insulating and protecting the stacked portion of the electrode terminals 112, and facilitating the bonding of the first member 20 to the base 61.

[0145] In some embodiments, the second member 60 includes a first sidewall 62 , which is formed by extending from the edge of the base 61 . The first sidewall 62 and the base 61 form a first recess 601 , which is disposed toward the battery cell assembly 10 in a direction opposite to the first direction X. Optionally, the second member 60 includes four first sidewalls 62 , which enclose the base 61 to form the first recess 601 .

[0146] In some embodiments, along the second direction Y, the projection of the first component 20 is located within the projection of the first recess 601 , which can insulate and protect the first component 20 .

[0147] In some embodiments, along the second direction Y, the projection of the electrode terminal 112 is located within the projection of the first sidewall 62, which can insulate and protect the electrode terminal 112. Alternatively, the projection of the first sealing portion 1112 is located within the projection of the first sidewall 62, which can further insulate and protect the electrode terminal 112.

[0148] In some embodiments, the second component 60 includes a first limiting portion 63 connected to a side of the base 61 facing away from the first component 20 . The conductive component 90 passes through the base 61 and is led out from the first limiting portion 63 .

[0149] In some embodiments, the battery module 100 includes a second insulating member 140. At least a portion of the second insulating member 140 is disposed in the gap between the conductive component 90 and the first stopper 63 to seal and insulate the conductive component 90. The second insulating member 140 is formed by disposing a second insulating material in the gap between the conductive component 90 and the first stopper 63 and then curing the material.

[0150] In some embodiments, the second insulating material comprises one of polyurethane glue, epoxy glue, and silicone glue. Alternatively, the second insulating material comprises quick-drying glue.

[0151] In some embodiments, the second component 60 includes a second limiting portion 64 connected to a side of the base 61 facing the first component 20 . The second limiting portion 64 is connected to the first component 20 to reduce the second insulating material from entering the first recess 601 .

[0152] In some embodiments, the second component 60 includes a third limiting portion 65 connected to a side of the base 61 facing away from the first component 20 . The first electrical connector 120 passes through the base 61 and is led out from the third limiting portion 65 .

[0153] In some embodiments, the battery module 100 includes a third insulating member 150. At least a portion of the third insulating member 150 is disposed in the gap between the first electrical connector 120 and the third limiting portion 65 to seal and insulate the first electrical connector 120. The third insulating member 150 is formed by disposing a third insulating material in the gap between the first electrical connector 120 and the third limiting portion 65 and then curing the material.

[0154] In some embodiments, the second component 60 includes a fourth limiting portion 66 connected to the side of the base 61 facing the first component 20 . The fourth limiting portion 66 is connected to the first component 20 to reduce the third insulating material from entering the first recess 601 .

[0155] In some embodiments, the second component 60 includes a fifth limiting portion 67 connected to a side of the base 61 facing away from the first component 20 . The second electrical connector 130 passes through the base 61 and is led out from the fifth limiting portion 67 .

[0156] In some embodiments, the third insulating material includes one of polyurethane glue, epoxy glue, and silicone glue. Alternatively, the third insulating material includes quick-drying glue.

[0157] In some embodiments, the battery module 100 includes a fourth insulating member 160. At least a portion of the fourth insulating member 160 is disposed in the gap between the second electrical connector 130 and the fifth stopper 67 to seal and insulate the second electrical connector 130. The fourth insulating member 160 is formed by disposing a fourth insulating material in the gap between the second electrical connector 130 and the fifth stopper 67 and then curing the material.

[0158] In some embodiments, the second component 60 includes a sixth limiting portion 68 , which is connected to the side of the base 61 facing the first component 20 . The sixth limiting portion 68 is connected to the first component 20 to reduce the fourth insulating material from entering the first recess 601 .

[0159] In some embodiments, the fourth insulating material comprises one of polyurethane glue, epoxy glue, and silicone glue. Alternatively, the fourth insulating material comprises quick-drying glue.

[0160] 1 , 3 and 4 , an embodiment of the present application provides a battery pack 1000 , including a housing 170 . The housing 170 is provided with a receiving space, and the battery module 100 is located in the receiving space.

[0161] In some embodiments, the housing 170 includes a housing front wall 171, a housing rear wall 172, a housing left wall 173, a housing right wall 174, a housing bottom wall 175, and a top cover 176. The housing bottom wall 175 and the top cover 176 are arranged along a first direction X, the housing front wall 171 and the housing rear wall 172 are arranged along a second direction Y, and the housing left wall 173 and the housing right wall 174 are arranged along a third direction Z. The housing front wall 171 connects the housing left wall 173 and the housing right wall 174, the housing rear wall 172 connects the housing left wall 173 and the housing right wall 174, the housing bottom wall 175 connects the housing front wall 171, the housing rear wall 172, the housing left wall 173, and the housing right wall 174, and the top cover 176 connects the housing front wall 171, the housing rear wall 172, the housing left wall 173, and the housing right wall 174 to form a receiving space.

[0162] In some embodiments, the first heat dissipation channel 80 a is connected to the outside through the housing openings 170 a on the housing front wall 171 and the housing rear wall 172 .

[0163] In some embodiments, the battery pack 1000 includes a thermal conductor 180 , which connects the battery cell housing 111 , the heat dissipating element 80 and the outer shell 170 , and can conduct the heat of the battery cell 11 to the outer shell 170 and the heat dissipating element 80 through the thermal conductor 180 , and dissipate the heat through the heat dissipating element 80 and the outer shell 170 .

[0164] Referring to FIG. 12 , in some embodiments, the cell housing 111 includes a second wall 1113, a third wall 1114, a fourth wall 1115, a fifth wall 1116, and a sixth wall 1117. The second wall 1113 and the first wall 1111 are arranged along a first direction X, the third wall 1114 and the fourth wall 1115 are arranged along a third direction Z, and the fifth wall 1116 and the sixth wall 1117 are arranged along a second direction Y. A heat conducting member 180 connects the second wall 1113, the third wall 1114, the fourth wall 1115, and the fifth wall 1116 of the cell housing 111, or alternatively, the heat conducting member 180 connects the second wall 1113, the third wall 1114, the fourth wall 1115, and the sixth wall 1117 of the cell housing 111, facilitating heat dissipation.

[0165] In some embodiments, the battery pack 1000 includes a second circuit board 110 , and the conductive component 90 is connected to the second circuit board 110 .

[0166] The second circuit board 110 includes a BMS assembly (Battery Management System), which includes multiple electronic components. The multiple electronic components can realize functions such as control, protection, communication, power calculation, signal transmission, and power transmission of the battery cell 11.

[0167] Optionally, the second circuit board 110 includes a flexible printed circuit (FPC). Optionally, the second circuit board 110 includes a printed circuit board (PCB), and a plurality of first connection portions (not shown) are provided on the second circuit board 110.

[0168] Referring to FIG. 20 , the present application further provides a method for manufacturing the battery module 100 , comprising the following steps:

[0169] Step 1: Install the first detection unit 31 between the cell housing 111 and the first component 20 through the first opening 20 a ;

[0170] Step 2: The filling member 50 is at least partially disposed in the first opening 20 a , or along the first direction X, the filling member 50 is at least partially located between the first opening 20 a and the battery cell housing 111 ;

[0171] Step 3: The first adhesive member 40 is disposed on the cell case 111 , and the first detection unit 31 is connected to the cell case 111 through the first adhesive member 40 .

[0172] 6 to 11 , step 1 specifically includes: disposing the third section 323 between the first opening 20 a and the cell casing 111 , disposing the first detection portion 31 on the first wall 1111 , and disposing the second section 322 in the second sub-opening 202 .

[0173] Step 2 specifically includes: placing the filling piece 50 at the first sub-opening 201 , or placing the filling piece 50 between the first opening 20 a and the cell housing 111 , wherein the filling piece 50 abuts against the second section 322 and / or the third section 323 to restrict movement of the first connecting portion 32 .

[0174] In some embodiments, step 3 specifically includes: setting a first adhesive 40 on the first wall 1111 to connect the first detection part 31 to the first wall 1111, or setting a first adhesive 40 on the first wall 1111 and the first sealing part 1112 to connect the first detection part 31 to the first wall 1111 and the first sealing part 1112.

[0175] In some embodiments, step 3 specifically includes: after completing steps 1 and 3, executing step 2. For example, the first adhesive 40 can be disposed on the cell housing 111 through the first opening 20a and / or the second opening 20b.

[0176] Referring to Figures 8 and 15, in some embodiments, the first adhesive 40 is first disposed on the first wall 1111, and then the first detection portion 31 is immersed in the first adhesive 40. The second section 322 is disposed in the second sub-opening 202. Before the first adhesive 40 is cured, the filler 50 is inserted from the first sub-opening 201, so that one end of the filler 50 connects the first adhesive 40 and the first detection portion 31, and the other end is disposed in the first sub-opening 201. Finally, the fixing member 101 is disposed on the side of the first component 20 facing away from the battery cell housing 111 to fix the position of the first section 321.

[0177] In some embodiments, step 3 specifically includes: after completing steps 1 and 2, performing step 3, for example, placing the first adhesive 40 on the cell housing 111 through the gaps 111 c between the first sealing portions 1112 of adjacent cell 11 .

[0178] Please refer to Figure 11. In some embodiments, the first detection part 31 is first placed on the first wall 1111 and as close to the first sealing part 1112 as possible. Then, the filler 50 is set in the first sub-opening 201 to restrict the second section 322. Then, the first adhesive 40 is injected from the side through the gap between the first sealing parts 1112 of adjacent battery cells 11 to immerse the first detection part 31 in the first adhesive 40.

[0179] In some embodiments, the above steps further include: bonding the fixing member 101 to a side of the first component 20 facing away from the battery cell housing 111 , so that the first section 321 is located between the first component 20 and the fixing member 101 .

[0180] 21 , the present application also provides an electrical device 2000 that utilizes the battery pack 1000. In one embodiment, the electrical device 2000 of the present application may be, but is not limited to, electronic equipment, drones, backup power supplies, electric vehicles, electric motorcycles, electric power-assisted bicycles, power tools, large household battery modules, and the like.

[0181] Those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present application and are not intended to limit the present application. As long as they are within the spirit of the present application, appropriate changes and modifications to the above embodiments fall within the scope disclosed in the present application.

Claims

1. A battery module, characterized in that: include: A battery cell assembly, wherein the battery cell assembly comprises a plurality of battery cells, each of the battery cells comprises a battery cell housing and an electrode terminal; A first component, the battery cell housing and the first component are arranged along a first direction, and the first component is provided with a first opening; A first detection assembly, comprising a first connecting portion and a first detection portion, wherein one end of the first connecting portion is disposed on a side of the first member away from the battery cell housing, and the other end passes through the first opening and is connected to the first detection portion; A first adhesive member, the first adhesive member is connected to the battery cell housing, and the first adhesive member is connected to the first detection unit; A filling piece is abutted against the first connecting portion.

2. The battery module according to claim 1, characterized in that: At least a portion of the filling member is disposed at the first opening, or, along the first direction, the filling member is located between the first opening and the battery cell casing.

3. The battery module according to claim 1, characterized in that: The first opening includes a first sub-opening; At least a portion of the filling piece is disposed at the first sub-opening.

4. The battery module according to claim 3, characterized in that: The first opening includes a second sub-opening. Along the second direction, the width of the second sub-opening is smaller than the width of the first sub-opening. Part of the first connecting portion is arranged in the second sub-opening. The first direction is perpendicular to the second direction.

5. The battery module according to claim 1, characterized in that: The filling member is disposed separately from the first adhesive member.

6. The battery module according to claim 1, characterized in that: The first connecting portion includes a first section, a second section and a third section; The first section is arranged on a side of the first member facing away from the battery cell housing; The second section is disposed at the first opening, and the second section connects the first section and the third section; The third section is connected to the first detection unit.

7. The battery module according to claim 6, characterized in that: The filling member abuts against the second section.

8. The battery module according to claim 6 or 7, characterized in that: The filling piece abuts against the third section.

9. The battery module according to claim 1, characterized in that: Along the first direction, a projection of the first detection portion is located within a projection of the filling member.

10. The battery module according to claim 1, characterized in that: Along the first direction, the cell case includes a first wall facing the first component, and the first detection portion is provided on the first wall.

11. The battery module according to any one of claims 1 to 10, characterized in that: The battery cell housing includes a main body and a sealing portion, the battery cell includes an electrode assembly, and the electrode assembly is arranged on the main body; The main body includes a first wall, the sealing portion includes a first sealing portion, the first sealing portion is connected to the first wall, and the electrode terminal is connected to the electrode assembly and is led out from the first sealing portion; The first component is provided with a plurality of second openings, and the electrode terminal passes through the second openings and is provided on a side of the first component away from the battery cell casing.

12. The battery module according to claim 11, characterized in that: One of the second openings is connected to the first opening.

13. The battery module according to claim 11, characterized in that: The battery cell includes a first battery cell, the first detection portion is disposed on a first wall of the first battery cell, The first adhesive connects the first sealing portion and the first detection portion of the first battery cell.

14. The battery module according to claim 13, characterized in that: The plurality of battery cells are stacked along a second direction, and along the second direction, a projection of the first adhesive member overlaps with a projection of an electrode terminal of the first battery cell.

15. The battery module according to claim 13, characterized in that: Along the second direction, the filling member abuts against the electrode terminal of the first battery cell.

16. The battery module according to claim 13, characterized in that: The electrode terminal of the first battery cell is separated from the first detection component.

17. The battery module according to any one of claims 1 to 16, characterized in that: The battery module includes a fixing member, which is arranged on a side of the first component away from the battery cell housing, and a portion of the first connecting portion is arranged between the first component and the fixing member.

18. The battery module according to any one of claims 1 to 17, characterized in that: Along the first direction, the filling piece does not extend beyond a surface of a side of the first component facing away from the battery cell casing.

19. The battery module according to any one of claims 1 to 16, characterized in that: The first adhesive member includes thermally conductive adhesive.

20. The battery module according to any one of claims 1 to 19, characterized in that: The first detection component is configured to detect the temperature of the battery cell.

21. The battery module according to any one of claims 1 to 20, characterized in that: The first component includes a circuit board.

22. A battery module, characterized in that: include: A battery cell assembly, wherein the battery cell assembly comprises a plurality of battery cells, each of the battery cells comprises a battery cell housing and an electrode terminal; A first component, the battery cell housing and the first component are arranged along a first direction, and the first component is provided with a first opening; A first detection assembly, comprising a first connecting portion and a first detection portion, wherein one end of the first connecting portion is disposed on a side of the first member away from the battery cell housing, and the other end passes through the first opening and is connected to the first detection portion; A first adhesive member, the first adhesive member is connected to the battery cell housing, and the first adhesive member is connected to the first detection unit; A filling piece, at least a portion of which is disposed at the first opening, or, along the first direction, the filling piece is located between the first opening and the battery cell housing, and the filling piece is configured to limit movement of the first detection component.

23. A method for manufacturing a battery module according to any one of claims 1 to 21 or claim 22, characterized in that: The steps include: The first detection unit is disposed between the battery cell housing and the first member through the first opening; The filling member is at least partially disposed at the first opening, or along the first direction, the filling member is at least partially located between the first opening and the battery cell housing, and the filling member limits the movement of the first connecting portion; The first adhesive member is disposed on the cell case, and the first detection unit is connected to the cell case through the first adhesive member.

24. A battery pack, characterized in that: A battery module comprising any one of claims 1 to 23.

25. The battery pack according to claim 24, characterized in that The battery pack includes a conductive component and a second circuit board. The conductive component connects the first component and the second circuit board, and the conductive component is configured to transmit the electrical signal of the battery cell to the second circuit board.

26. An electrical equipment, characterized in that: Comprising a battery pack as claimed in claim 24 or 25.

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