Battery modules and electrical equipment

Abstract

This application discloses a battery module and an electrical device. The battery module includes a battery pack, a circuit board, a first connector, a second connector, and a third connector. The battery pack includes a circuit board and a first battery group and a second battery group arranged along a first direction. The first connector is connected to and electrically connected to both the first battery group and the circuit board. Along a second direction perpendicular to the first direction, the first connector is at least partially located on one side of the battery pack. The second connector is connected to and electrically connected to the circuit board and is at least partially located on the side of the battery pack opposite to the first connector. The third connector is connected to and electrically connected to both the first and second battery groups and is located on the side of the battery pack opposite to the first connector. The arrangement of the first, second, and third connectors in this application improves the stability of the connection between the circuit board and the first and second battery groups, and also improves the space utilization of the battery pack.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to a battery module and an electrical device. Background Technology

[0002] With the development and application of electrical equipment, the demand for power capacity is gradually increasing. To improve power capacity, multiple batteries are connected in series or parallel to form battery packs, and multiple battery packs connected in series or parallel to form battery modules. However, current battery modules are prone to displacement between multiple battery packs and circuit boards when subjected to impact. Summary of the Invention

[0003] In view of this, this application provides a battery module that is beneficial to improving the stability of the connection of internal components.

[0004] Some embodiments of this application provide a battery module, which includes a battery pack, a circuit board, a first connector, a second connector, and a third connector. The battery pack includes a first battery group and a second battery group arranged along a first direction. Along the first direction, the distance between the circuit board and the first battery group is less than the distance between the circuit board and the second battery group. The first connector is connected to and electrically connected to both the first battery group and the circuit board. Along a second direction perpendicular to the first direction, the first connector is at least partially located on one side of the battery pack. The second connector is connected to and electrically connected to the circuit board. Along the second direction, the second connector is at least partially located on the side of the battery pack facing away from the first connector. The third connector is connected to and electrically connected to both the first and second battery groups. Along the second direction, the third connector is located on the side of the battery pack facing away from the first connector.

[0005] In the above embodiments, the first connector connects the first battery pack and the circuit board, and has the function of restricting the mutual displacement of the first battery pack and the circuit board. The third connector connects the first battery pack and the second battery pack, and has the function of restricting the mutual movement of the first battery pack and the second battery pack. Thus, the battery pack is affected by the restriction of movement on both sides opposite to each other in the second direction, making the force distribution of the battery pack more uniform. This is beneficial to improving the stability of the connection between the circuit board and the first and second battery packs. Both sides opposite to each other in the second direction of the battery pack can be used to set components, which is beneficial to improving the space utilization of the battery pack.

[0006] In some embodiments, the first battery group includes a first battery block, a second battery block, a first conductive plate, a second conductive plate, and a third conductive plate. Along a first direction, the first conductive plate is located on the side of the first battery block and the second battery block facing the second battery group. The first conductive plate is connected to and electrically connected to the first battery block and the second battery block. Along the first direction, the second conductive plate and the third conductive plate are located on the side of the first battery block and the second battery block facing the circuit board. The second conductive plate is connected to the first battery block, and the third conductive plate is connected to the second battery block.

[0007] In the above embodiments, the first conductive plate is beneficial for connecting the first battery block and the second battery block in series, and the second conductive plate and the third conductive plate are beneficial for drawing out the polarity of the first battery block and the second battery block.

[0008] In some embodiments, the first battery group further includes a third battery block, a fourth battery block, a fourth conductive plate, and a fifth conductive plate. The third conductive plate is connected to and electrically conductive with the second battery block and the circuit board. The fourth conductive plate is located between the fourth battery block and the circuit board. The fourth conductive plate is connected to and electrically conductive with the fourth battery block. Along a first direction, the fifth conductive plate is located on the side of the third battery block and the fourth battery block facing the second battery group. The fifth conductive plate is connected to and electrically conductive with the third battery block and the fourth battery block.

[0009] In the above embodiments, the first conductive plate facilitates connecting the first battery block and the second battery block in series, the third conductive plate facilitates connecting the second battery block and the third battery block in series, and the fifth conductive plate facilitates connecting the third battery block and the fourth battery block in series.

[0010] In some embodiments, the fourth conductive plate is connected to the third connector and electrically connects the first battery block and the third connector, and the second conductive plate is connected to the first connector and electrically connects the first battery block and the first connector.

[0011] In the above embodiments, the fourth conductive plate and the second conductive plate are beneficial for drawing out the polarity of the first battery group, thereby facilitating the electrical connection between the first battery group and the first circuit board or with other battery groups.

[0012] In some embodiments, the battery pack further includes a first insulating layer disposed between the first battery pack and the circuit board.

[0013] In the above embodiments, the first insulating layer is disposed between the first battery pack and the circuit board, which helps to reduce the risk of short circuit when the second conductive plate, the third conductive plate or the fourth conductive plate comes into contact with the circuit board.

[0014] In some embodiments, when viewed along a second direction, the first connector at least partially overlaps with the first battery pack.

[0015] In the above embodiments, the first connector and the first battery pack at least partially overlap, which is beneficial for the connection between the first connector and the first battery pack.

[0016] In some embodiments, when viewed along the second direction, the third connector at least partially overlaps with the first battery pack and at least partially overlaps with the second battery pack.

[0017] In the above embodiments, when viewed along the second direction, the third connector at least partially overlaps with the first battery group and at least partially overlaps with the second battery group, which is beneficial for the third connector to be connected to both the first and second battery groups.

[0018] In some embodiments, when viewed along the second direction, the first connector and the third connector at least partially overlap.

[0019] In the above embodiments, when viewed along the second direction, the first connector and the third connector at least partially overlap, which is beneficial for the first connector to restrict the working position of the first battery pack and the circuit board, and for the third connector to restrict the working position of the first battery pack and the second battery pack to at least partially overlap when viewed along the second direction, thereby further improving the uniformity of the force on the battery pack.

[0020] In some embodiments, the third connector includes a first main body, a first connecting part, and a second connecting part. The first main body connects the first connecting part and the second connecting part. The first connecting part is connected to the first battery pack, and the second connecting part is connected to the second battery pack. Along the third direction, the width of the first main body is greater than the width of the first connecting part, and the width of the first main body is greater than the width of the second connecting part. The third direction is perpendicular to both the first and second directions.

[0021] In the above embodiments, along the third direction, the width of the first main body is greater than the width of the first connecting part, and the width of the first main body is greater than the width of the second connecting part. This is beneficial for the third connecting part to melt under the extreme condition of the battery module generating a large current, thereby facilitating the timely interruption of the circuit and playing the role of protecting the battery module or the device electrically connected to the battery module.

[0022] In some embodiments, along a third direction, the third connector further includes a third connecting portion spaced apart from the first connecting portion and a fourth connecting portion spaced apart from the second connecting portion. The first main body portion connects the third connecting portion and the fourth connecting portion. The third connecting portion is connected to the first battery pack, and the fourth connecting portion is connected to the second battery pack. Along a third direction, the width of the first main body portion is greater than the width of the third connecting portion, and the width of the first main body portion is greater than the width of the fourth connecting portion.

[0023] In the above embodiments, the provision of a third connecting portion and a fourth connecting portion that are easier to melt than the first main body portion is beneficial to increasing the number of connection points between the third connector and the first battery group and the second battery group, thereby enhancing the effect of the third connector in restricting the mutual movement of the first battery group and the second battery group.

[0024] In some embodiments, the first main body has a first segment, a second segment, and a third segment connected sequentially along a third direction. The first segment connects the first connecting portion and the second connecting portion, and the third segment connects the third connecting portion and the fourth connecting portion. When viewed along the first direction, the second segment is bent.

[0025] In the above embodiments, the bending of the second segment is conducive to the deformation of the third connector, so that the first segment and the third segment can move closer to each other or further away from each other in the third direction, thereby absorbing stress and reducing the risk of the first, second, third and fourth connectors breaking due to stress.

[0026] In some embodiments, along a third direction, a first notch is provided on one side of the first main body portion, and a second notch is provided on the other side of the first main body portion.

[0027] In the above embodiments, the first notch and the second notch facilitate deformation of the third connector, allowing the end of the first segment connecting to the first connecting part and the end of the first segment connecting to the second connecting part to move closer or further apart in the first direction, and allowing the end of the third segment connecting to the third connecting part and the end of the third segment connecting to the fourth connecting part to move closer or further apart in the first direction, thereby absorbing stress and reducing the risk of the first connecting part, the second connecting part, the third connecting part and the fourth connecting part breaking due to stress.

[0028] In some embodiments, when viewed along a third direction, the first gap and the second gap are separate.

[0029] In the above embodiments, when viewed from a third direction, the first notch and the second notch are separate, which helps to reduce the risk of reduced strength due to the first main body being located too narrow between the first and second notches.

[0030] In some embodiments, the first main body has a first wall, a second wall, and a third wall that enclose a first notch. The first wall and the second wall are disposed opposite each other along a first direction, and the third wall connects the first wall and the second wall. The third wall is an arc-shaped wall.

[0031] In the above embodiments, setting the third wall as an arc-shaped wall is beneficial for absorbing stress, reducing the risk of the third wall cracking under stress, and thus reducing the risk of the third connector being damaged under stress.

[0032] In some embodiments, the first connecting portion has a first region connected to the first battery pack, and the first connecting portion is provided with a first through hole, which is located between the first region and the first main body portion along a first direction; the third connecting portion has a second region connected to the first battery pack, and the third connecting portion is provided with a second through hole, which is located between the second region and the first main body portion along a first direction.

[0033] In the above embodiments, the provision of the first through hole and the second through hole helps to further reduce the strength of the first connecting part and the third connecting part, making the first connecting part and the third connecting part easier to melt, which in turn helps the third connecting part to melt in time when the battery module is in the extreme situation of generating a large current.

[0034] In some embodiments, the battery pack further includes a third battery group located on the side of the second battery group away from the first battery group along a first direction, and the second connector is connected to and electrically connected to the third battery group.

[0035] In the above embodiments, the third battery pack is beneficial for further increasing the battery module's capacity.

[0036] In some embodiments, the battery module further includes a fourth connector, which is connected to and electrically conductive with both the second and third battery groups, and is located on the side of the battery group away from the third connector along the second direction.

[0037] In the above embodiments, the fourth connector helps to restrict the mutual movement between the second battery pack and the third battery pack, thereby improving the reliability of the battery pack.

[0038] In some embodiments, when viewed along the second direction, the fourth connector at least partially overlaps with the second battery pack and at least partially overlaps with the third battery pack.

[0039] In the above embodiments, the fourth connector at least partially overlaps with the second battery group and at least partially overlaps with the third battery group, which is beneficial for the fourth connector to be connected to both the second and third battery groups.

[0040] In some embodiments, when viewed along a first direction, the first connector and the fourth connector at least partially overlap.

[0041] In some embodiments, when viewed along a first direction, the third connector at least partially overlaps with the second connector; when viewed along a third direction, the third connector at least partially overlaps with the second connector, and the third direction overlaps with both the first and second directions.

[0042] In some embodiments, when viewed along the second direction, the second connector at least partially overlaps with the first battery group, the second battery group, and the third battery group.

[0043] In some embodiments, the battery module further includes a sampling device, which is connected to and electrically conductive with the circuit board, the first battery group, the second battery group, and the third battery group.

[0044] In the above embodiments, the sampling device is connected to and electrically conductive with the circuit board, the first battery group, the second battery group, and the third battery group. This allows the circuit board to collect parameters such as voltage, temperature, current, and voltage of the first battery group, the second battery group, and the third battery group through the sampling device. This facilitates the monitoring of the operating status of the first battery group, the second battery group, and the third battery group, thereby improving the reliability of the battery module.

[0045] In some embodiments, the sampling element is located on the side of the battery pack facing the third direction, which is perpendicular to both the first and second directions.

[0046] In the above embodiments, the sampling component is located on the side of the battery pack facing the third direction, so that the battery pack can be installed on a side different from the side where the first connector, the second connector and the third connector are provided, thereby improving the space utilization of the battery pack.

[0047] In some embodiments, when viewed along a third direction, the sampler partially overlaps with the first battery group, the second battery group, and the third battery group.

[0048] In the above embodiments, the sampling device partially overlaps with the first battery group, the second battery group, and the third battery group, which is beneficial for the connection between the sampling device and the first battery group, the second battery group, and the third battery group.

[0049] In some embodiments, the first battery pack further includes a plurality of batteries and a first bracket and a second bracket connected to each other. The first bracket and the second bracket are arranged along a first direction. Along the first direction, one end of the plurality of batteries in the first battery pack is connected to the first bracket and the other end is connected to the second bracket. A first connector is connected to the first bracket and electrically connected to the plurality of batteries.

[0050] In the above embodiments, the first connector is also connected to the circuit board and the first bracket, which helps to improve the stability of the connection between the entire first battery pack and the circuit board.

[0051] In some embodiments, the second battery pack further includes a plurality of batteries and a third and fourth bracket connected to each other. The first, second, third and fourth brackets are arranged sequentially along a first direction. Along the first direction, one end of the plurality of batteries in the second battery pack is connected to the third bracket and the other end is connected to the fourth bracket. A portion of the third connector is connected to the first bracket and a portion of the third connector is connected to the third bracket.

[0052] In the above embodiments, the third connector is connected to the first bracket and the third bracket, which helps to improve the stability of the connection between the first battery group and the second battery group.

[0053] In some embodiments, the battery module further includes a first housing, a second housing, and a third housing. Along a first direction, the first housing, the second housing, and the third housing are arranged sequentially and surround a receiving cavity, which houses the battery pack, the circuit board, the first connector, the second connector, and the third connector.

[0054] In the above embodiments, the first housing, the second housing, and the third housing are beneficial for protecting the battery pack, the circuit board, the first connector, the second connector, and the third connector.

[0055] In some embodiments, the battery pack has a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall connected sequentially. The first and third sidewalls are disposed opposite each other along a second direction, and the second and fourth sidewalls are disposed opposite each other along a third direction, which is perpendicular to both the first and second directions. A first connector is connected to the first sidewall, and both the second and third connectors are connected to the third sidewall.

[0056] In addition, this application also provides an electrical device that helps improve reliability.

[0057] Some embodiments of this application provide an electrical device, which includes a battery module as described in any of the above embodiments.

[0058] In the above embodiments, the stability of the connection between the circuit board and the first battery group and the second battery group is improved, so that the circuit board, the first battery group and the second battery group are less likely to move between each other during assembly, transportation and use, thereby improving the reliability of the battery module and thus improving the reliability of the electrical equipment.

[0059] The battery module in this application includes a battery pack, a circuit board, a first connector, a second connector, and a third connector. The first and second battery groups of the circuit board battery pack are arranged sequentially along a first direction. The first connector is connected to both the first battery group and the circuit board; the second connector is connected to the circuit board and electrically conductive; and the third connector is connected to both the first and second battery groups and electrically conductive. Along a second direction, the first connector is on one side of the battery pack, and the second and third connectors are on the other side. The first and third connectors restrict movement on both opposite sides of the battery pack in the second direction, resulting in a more uniform force distribution on the battery pack. This improves the stability of the connection between the circuit board and the first and second battery groups. Since components can be installed on both opposite sides of the battery pack in the second direction, the space utilization of the battery pack is improved. Attached Figure Description

[0060] Figure 1 This is a side view of a battery module provided in an embodiment of this application.

[0061] Figure 2 for Figure 1 A side view of the battery module from another perspective.

[0062] Figure 3 This is a schematic diagram of the structure of a battery module provided in one embodiment of this application.

[0063] Figure 4 for Figure 3 A structural schematic diagram of the battery module from another perspective.

[0064] Figure 5 for Figure 3 A top view of the battery module.

[0065] Figure 6 This is a schematic diagram of a first battery pack provided in an embodiment of this application.

[0066] Figure 7 This is a schematic diagram of the structure of a battery provided in one embodiment of this application.

[0067] Figure 8 This is a schematic diagram of the structure of a battery provided in another embodiment of this application.

[0068] Figure 9 This is a schematic diagram of a first battery pack provided in an embodiment of this application.

[0069] Figure 10 This is a schematic diagram of a first battery pack provided in an embodiment of this application.

[0070] Figure 11 This is a schematic diagram of a battery module provided in one embodiment of this application.

[0071] Figure 12 This is a schematic diagram of a battery module provided in another embodiment of this application.

[0072] Figure 13 This is a schematic diagram of a battery module provided in yet another embodiment of this application.

[0073] Figure 14 This is a schematic diagram of the structure of the first support provided in an embodiment of this application.

[0074] Figure 15 This is a schematic diagram of the structure of the second support provided in an embodiment of this application.

[0075] Figure 16 This is a schematic diagram of the structure of the third support provided in an embodiment of this application.

[0076] Figure 17 This is a schematic diagram of the structure of the fourth support provided in an embodiment of this application.

[0077] Figure 18 for Figure 1 Another side view of the battery module.

[0078] Figure 19 This is a schematic diagram of the structure of a third connector provided in an embodiment of this application.

[0079] Figure 20 for Figure 17 Side view of the third connector.

[0080] Figure 21 This is a schematic diagram of the structure of the fourth connector provided in an embodiment of this application.

[0081] Figure 22 This is a side view of a battery module provided in an embodiment of this application.

[0082] Figure 23 for Figure 20 A cross-sectional view of the battery module after it has been reversed.

[0083] Figure 24 This is a schematic diagram of an electrical device provided in an embodiment of this application.

[0084] Explanation of main component symbols

[0085] Battery Module 100

[0086] Battery pack 10

[0087] First Battery Group 11

[0088] First battery block 111

[0089] Second battery block 112

[0090] Third battery block 113

[0091] Fourth battery block 114

[0092] First conductive plate 115

[0093] Second conductive plate 116

[0094] Third conductive plate 117

[0095] Fourth conductive plate 118

[0096] Fifth conductive plate 119

[0097] First support 11a

[0098] First clearance hole 11a 1

[0099] Second support 11b

[0100] Second clearance hole 11b 1

[0101] Second battery group 12

[0102] Sixth conductive plate 121

[0103] Seventh conductive plate 122

[0104] Eighth conductive plate 123

[0105] Ninth conductive plate 124

[0106] Tenth conductive plate 125

[0107] Third support 12a

[0108] Third clearance hole 12a 1

[0109] Fourth support 12b

[0110] Fourth clearance hole 12b 1

[0111] Third Battery Group 13

[0112] Eleventh conductive plate 131

[0113] Twelfth conductive plate 132

[0114] Thirteenth Conductive Plate 133

[0115] Fourteenth conductive plate 134

[0116] The fifteenth conductive plate 135

[0117] First insulating layer 14

[0118] Second insulating layer 15

[0119] Third insulating layer 16

[0120] First sidewall 10a

[0121] Second sidewall 10b

[0122] Third sidewall 10c

[0123] Fourth sidewall 10d

[0124] Fifth lateral wall 10e

[0125] Sixth sidewall 10f

[0126] Circuit board 20

[0127] First connector 30

[0128] Part 1, Chapter 31

[0129] Part 2, 32

[0130] Second connector 40

[0131] Part 3, 41

[0132] Part 4, 42

[0133] Third connector 50

[0134] First Main Body Section 51

[0135] First paragraph 511

[0136] Second paragraph 512

[0137] Third paragraph 513

[0138] First gap 514

[0139] First Wall 5141

[0140] Second Wall 5142

[0141] Third Wall 5143

[0142] Second gap 515

[0143] Fourth Wall 5151

[0144] Fifth Wall 5152

[0145] Sixth Wall 5153

[0146] First connecting part 52

[0147] Area 1, 521

[0148] First through hole 522

[0149] Second connecting part 53

[0150] Third connecting part 54

[0151] Second area 541

[0152] Second through hole 542

[0153] Fourth connecting part 55

[0154] Fourth connector 60

[0155] Second Main Body Section 61

[0156] Fifth connecting part 62

[0157] Sixth connecting part 63

[0158] Seventh connecting part 64

[0159] Eighth connecting part 65

[0160] Sample 70

[0161] First shell 80

[0162] Second shell 90

[0163] Third shell 91

[0164] 92-cell cavity

[0165] Battery 101

[0166] Cylinder 101a

[0167] Cover 101b

[0168] Packaging bag 101c

[0169] Electrode terminal 101d

[0170] 1000 electrical appliances

[0171] First direction X

[0172] Second direction Y

[0173] Third direction Z Detailed Implementation

[0174] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0175] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or may also have an intervening component. When a component is considered to be "placed" on another component, it can be directly placed on the other component or may also have an intervening component. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "back," and similar expressions used in this article are for illustrative purposes only.

[0176] The term "perpendicular" 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 perpendicular. For example, in numerical terms, 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 straight or plane, the component can be considered a "straight line" or "plane".

[0177] It should be noted that when a parameter is greater than, equal to or less than a certain endpoint value, it should be understood that the endpoint value is allowed to have a tolerance of ±5%.

[0178] Unless otherwise stated, the term "multiple" as used herein refers to two or more.

[0179] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0180] This application discloses a battery module, which includes a battery pack, a circuit board, a first connector, a second connector, and a third connector. The battery pack includes a first battery group and a second battery group arranged along a first direction. Along the first direction, the circuit board is located on the side of the first battery group facing away from the second battery group. The first connector is connected to and electrically connected to both the first battery group and the circuit board, and along a second direction perpendicular to the first direction, the first connector is at least partially located on one side of the battery pack. The second connector is connected to and electrically connected to the circuit board, and along the second direction, the second connector is at least partially located on the side of the battery pack facing away from the first connector. The third connector is connected to and electrically connected to both the first and second battery groups, and along the second direction, the third connector is located on the side of the battery pack facing away from the first connector.

[0181] The first connector connects the first battery pack and the circuit board, and has the function of restricting the mutual displacement of the first battery pack and the circuit board. The third connector connects the first battery pack and the second battery pack, and has the function of restricting the mutual movement of the first battery pack and the second battery pack. Thus, the battery pack is affected by the restriction of movement on both sides of the opposite direction in the second direction, making the force distribution of the battery pack more uniform. This helps to improve the stability of the connection between the circuit board and the first and second battery packs. Both sides of the battery pack in the second direction can be used to set components, which helps to improve the space utilization of the battery pack.

[0182] Some embodiments of this application will now be described with reference to the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0183] Please see Figure 1 and Figure 2 This application provides a battery module 100, which includes a battery pack 10, a circuit board 20, a first connector 30, a second connector 40, and a third connector 50. The battery pack 10 includes a first battery group 11 and a second battery group 12 arranged along a first direction X. Along the first direction X, the distance between the circuit board 20 and the first battery group 11 is less than the distance between the circuit board 20 and the second battery group 12. The first connector 30 is connected to and electrically connected to both the first battery group 11 and the circuit board 20. Along a second direction Y perpendicular to the first direction X, the first connector 30 is at least partially located on one side of the battery pack 10. The second connector 40 is connected to and electrically connected to the circuit board 20. Along the second direction Y, the second connector 40 is at least partially located on the side of the battery pack 10 opposite to the first connector 30. The third connector 50 is connected to and electrically connected to both the first battery group 11 and the second battery group 12. Along the second direction Y, the third connector 50 is located on the side of the battery pack 10 opposite to the first connector 30.

[0184] In this embodiment, the first connector 30 connects the first battery pack 11 and the circuit board 20, and has the function of restricting the mutual displacement of the first battery pack 11 and the circuit board 20. The third connector 50 connects the first battery pack 11 and the second battery pack 12, and has the function of restricting the mutual movement of the first battery pack 11 and the second battery pack 12. This restricts the movement of the battery pack 10 on both sides opposite to each other in the second direction Y, making the force distribution of the battery pack 10 more uniform. This is beneficial to improving the stability of the connection between the circuit board 20 and the first battery pack 11 and the second battery pack 12, thereby improving the reliability of the battery pack 10. The battery pack 10 can be used to set components on both sides opposite to each other in the second direction Y, which is beneficial to improving the space utilization of the battery pack 10.

[0185] In some embodiments, please refer to Figures 1 to 3 Along the first direction X, the circuit board 20 is located on the side of the first battery group 11 away from the second battery group 12, so that the circuit board 20, the first battery group 11 and the second battery group 12 are arranged along the first direction X.

[0186] In some embodiments, please refer to Figures 3 to 5 The battery pack 10 has a first sidewall 10a and a third sidewall 10c arranged opposite each other along the second direction Y, a second sidewall 10b and a fourth sidewall 10d arranged opposite each other along the third direction Z, and a fifth sidewall 10e and a sixth sidewall 10f arranged opposite each other along the first direction X.

[0187] It is understood that the first sidewall 10a and the third sidewall 10c are the walls formed by the overall structure of the battery pack 10 when viewed along the second direction Y and along a direction opposite to the second direction Y. The second sidewall 10b and the fourth sidewall 10d are the walls formed by the overall structure of the battery pack 10 when viewed along the third direction Z and along a direction opposite to the third direction Z. The fifth sidewall 10e and the sixth sidewall 10f are the walls formed by the overall structure of the battery pack 10 when viewed along the first direction X and along a direction opposite to the first direction X.

[0188] In some embodiments, please refer to Figure 3 and Figure 4 The first connector 30 is connected to the first sidewall 10a, and the second connector 40 and the third connector 50 are both connected to the third sidewall 10c.

[0189] In some embodiments, please refer to Figures 3 to 5 The circuit board 20 is at least partially connected to the fifth sidewall 10e, the first connector 30 is at least partially connected to the first sidewall 10a, the second connector 40 is at least partially connected to the third sidewall 10c, and the third connector 50 is at least partially connected to the third sidewall 10c.

[0190] In some embodiments, please refer to Figure 4 and Figure 6 The first battery group 11 and the second battery group 12 are connected in series or in parallel via a third connector 50. The first battery group 11 includes a first battery block 111 and a second battery block 112, which are arranged along the second direction Y.

[0191] In other embodiments, the first battery block 111 and the second battery block 112 are arranged along a third direction Z, which is perpendicular to the first direction X and the second direction Y.

[0192] The first battery block 111 includes a plurality of batteries 101, and the second battery block 112 includes a plurality of batteries 101. For example, please refer to [link to example]. Figure 6 The first battery block 111 includes eight batteries 101 numbered C1, C2, C3, C4, C5, C6, C7 and C8, which are arranged along the second direction Y and the third direction Z. The second battery block 112 includes eight batteries 101 numbered C9, C10, C11, C12, C13, C14, C15 and C16, which are arranged along the second direction Y and the third direction Z.

[0193] In some embodiments, please refer to Figure 6The first battery block 111 consists of eight batteries 101 numbered C1, C2, C3, C4, C5, C6, C7 and C8 connected in parallel. The second battery block 112 consists of eight batteries 101 numbered C9, C10, C11, C12, C13, C14, C15 and C16C connected in parallel. The first battery block 111 and the second battery block 112 are connected in series.

[0194] In other embodiments, the first battery block 111 and the second battery block 112, as well as the batteries 101 within the first battery block 111 and the second battery block 112, can also be electrically connected through other series or parallel connections, which will not be listed here.

[0195] In some embodiments, please refer to Figure 7 The battery 101 is a cylindrical battery. The battery 101 includes a cylindrical body 101a, a cover 101b, and an electrode assembly (not shown). The cylindrical body 101a and the cover 101b are insulated from each other and form a receiving cavity (not shown). The receiving cavity houses the electrode assembly.

[0196] In other embodiments, please refer to Figure 8 The battery 101 is a pouch battery, comprising a packaging bag 101c, an electrode assembly (not shown), and electrode terminals 101d. The packaging bag 101c can be a flexible aluminum-plastic film. The electrode assembly is housed within the packaging bag 101c, and the electrode terminals 101d are connected to the electrode assembly. At least a portion of the electrode terminals 101d extends outside the packaging bag 101c to lead out the polarity of the electrode assembly. In other embodiments, the battery 101 is a prismatic battery; the specific structure will not be described in detail here.

[0197] The electrode assembly includes a first electrode, a second electrode, and a separator film located between the first and second electrodes. The first electrode, the second electrode, and the separator film can be stacked or stacked and then wound together. The first electrode can be a positive electrode or a negative electrode, and the second electrode can be a positive electrode or a negative electrode. The first and second electrodes have opposite polarities, and electrodes with different polarities are made of different metal layers.

[0198] As an example, the first electrode is a positive electrode, comprising a metallic aluminum layer and a positive electrode active material layer coated on the surface of the metallic aluminum layer. The positive electrode active material layer includes one or more of lithium nickel cobalt manganese oxide, lithium nickel cobalt manganese oxide, lithium cobalt oxide, lithium iron phosphate, lithium nickel cobalt manganese oxide, lithium manganese oxide, lithium manganese iron phosphate, and cobalt-free materials. The second electrode is a negative electrode, comprising a metallic copper layer and a negative electrode active material layer coated on the metallic copper layer. The negative electrode active material layer includes one or more of artificial graphite, natural graphite, and silicon materials.

[0199] In some embodiments, the separator is an insulating film material such as polyethylene film, polypropylene film, polyester film, or polyimide film, so as to isolate the positive electrode and the negative electrode.

[0200] When the battery 101 is a cylindrical battery, one of the first electrode and the second electrode is in contact with the cylinder 101a, and the other of the first electrode and the second electrode is in contact with the cover 101b, so that the cylinder 101a and the cover 101b of the battery 101 have different polarities.

[0201] In some embodiments, please refer to Figure 9 The first battery group 11 also includes a first conductive plate 115, a second conductive plate 116, and a third conductive plate 117. Along the first direction X, the first conductive plate 115 is located on the side of the first battery block 111 and the second battery block 112 facing the second battery group 12. The first conductive plate 115 is connected to and electrically conductive with the first battery block 111 and the second battery block 112, allowing the first battery block 111 and the second battery block 112 to be connected in series. Along the first direction X, the second conductive plate 116 and the third conductive plate 117 are located on the side of the first battery block 111 and the second battery block 112 facing the circuit board 20. The second conductive plate 116 is connected to the first battery block 111, and the third conductive plate 117 is connected to the second battery block 112.

[0202] As an example, the first conductive plate 115 contacts the cylindrical body 101a of eight batteries 101 numbered C1, C2, C3, C4, C5, C6, C7, and C8, thereby connecting the eight batteries 101 numbered C1-C8 in parallel. The first conductive plate 115 also contacts the cover 101b of eight batteries 101 numbered C9, C10, C11, C12, C13, C14, C15, and C16C, thereby connecting the eight batteries 101 numbered C9-C16 in parallel. The first conductive plate 115 contacts sixteen batteries 101 numbered C1-C16, thereby connecting the first battery block 111 and the second battery block 112 in series.

[0203] It should be noted that the second conductive plate 116 can be electrically connected to the positive electrode of the battery 101 in the first battery block 111, and the second conductive plate 116 can also be electrically connected to the negative electrode of the battery 101 in the first battery block 111.

[0204] It is understood that the second conductive plate 116 can also be electrically connected to the first connector 30, the third connector 50 or other batteries 101, and the third conductive plate 117 can also be electrically connected to the first connector 30, the third connector 50 or other batteries 101.

[0205] In some embodiments, the first conductive plate 115, the second conductive plate 116, and the third conductive plate 117 may be copper sheets or aluminum sheets, without specific limitations.

[0206] In some embodiments, please refer to Figure 10 and Figure 11 The first battery group 11 also includes a third battery block 113 and a fourth battery block 114. The first battery block 111, the second battery block 112, the third battery block 113 and the fourth battery block 114 are arranged along the second direction Y.

[0207] In other embodiments, the first battery block 111, the second battery block 112, the third battery block 113, and the fourth battery block 114 are arranged along a third direction Z.

[0208] The third battery block 113 includes multiple batteries arranged along the second direction Y or the third direction Z. The fourth battery block 114 includes multiple batteries 101 arranged along the second direction Y or the third direction Z.

[0209] In some embodiments, please refer to Figure 10 and Figure 11 Multiple batteries 101 in the third battery block 113 are connected in parallel, and multiple batteries 101 in the fourth battery block 114 are connected in parallel. The first battery block 111, the second battery block 112, the third battery block 113 and the fourth battery block 114 are connected in series.

[0210] As an example, please refer to Figure 10 The third battery block 113 includes eight batteries 101 numbered C17, C18, C19, C20, C21, C22, C23 and C24 respectively, and the fourth battery block 114 includes eight batteries 101 numbered C25, C26, C27, C28, C29, C30, C31 and C32 respectively.

[0211] In some embodiments, please refer to Figure 10 The eight batteries 101 numbered C1-C8 in the first battery block 111 are connected in parallel; the eight batteries 101 numbered C9-C16 in the second battery block 112 are connected in parallel; the eight batteries 101 numbered C17-C24 in the third battery block 113 are connected in parallel; and the eight batteries 101 numbered C25-C32 in the fourth battery block 114 are connected in parallel. The first battery block 111, the second battery block 112, the third battery block 113, and the fourth battery block 114 are connected in series.

[0212] In other embodiments, the batteries 101 in the first battery block 111, the second battery block 112, the third battery block 113, the fourth battery block 114, and the third battery block 113 and the fourth battery block 114 can also be electrically connected in other series or parallel ways, which will not be listed here.

[0213] In some embodiments, please refer to Figure 10 and Figure 11 The third conductive plate 117 is connected to and electrically conductive with the second battery block 112 and the third battery block 113. The first battery group 11 also includes a fourth conductive plate 118 and a fifth conductive plate 119. Along the first direction X, the fourth conductive plate 118 is located between the fourth battery block 114 and the circuit board 20, and is connected to and electrically conductive with the fourth battery block 114. Along the first direction X, the fifth conductive plate 119 is located on the side of the third battery block 113 and the fourth battery block 114 facing the second battery group 12, and is connected to and electrically conductive with the third battery block 113 and the fourth battery block 114, so that the first battery block 111, the second battery block 112, the third battery block 113 and the fourth battery block 114 are connected in series.

[0214] As an example, the third conductive plate 117 contacts the cylindrical body 101a of eight batteries 101 numbered C9, C10, C11, C12, C13, C14, C15, and C16C, thereby connecting the eight batteries 101 numbered C9-16 in parallel. The third conductive plate 117 also contacts the cover 101b of eight batteries 101 numbered C17, C18, C19, C20, C21, C22, C23, and C24, thereby connecting the eight batteries 101 numbered C17-C24 in parallel. The third conductive plate 117 contacts sixteen batteries 101 numbered C9-C24 simultaneously, thereby connecting the second battery block 112 and the third battery block 113 in series.

[0215] As an example, the fourth conductive plate 118 contacts the cylinder 101a of eight batteries 101 numbered C25, C26, C27, C28, C29, C30, C31 and C32, thereby connecting the eight batteries 101 numbered C25-C32 in parallel.

[0216] As an example, the fifth conductive plate 119 contacts the cylindrical body 101a of eight batteries 101 numbered C17, C18, C19, C20, C21, C22, C23 and C24, thereby connecting the eight batteries 101 numbered C17-C24 in parallel. The fifth conductive plate 119 contacts the cover 101b of eight batteries 101 numbered C25, C26, C27, C28, C29, C30, C31 and C32, thereby connecting the eight batteries 101 numbered C25-C32 in parallel. The fifth conductive plate 119 contacts sixteen batteries 101 numbered C17-C32 simultaneously, thereby connecting the third battery block 113 and the fourth battery block 114 in series.

[0217] In some embodiments, please refer to Figure 10 and Figure 11 The fourth conductive plate 118 is connected to the third connector 50 and electrically connects the fourth battery block 114 and the third connector 50. The second conductive plate 116 is connected to the first connector 30 and electrically connects the first battery block 111 and the first connector 30.

[0218] In some embodiments, please refer to Figures 11 to 13 The second battery group 12 also includes a sixth conductive plate 121, a seventh conductive plate 122, an eighth conductive plate 123, a ninth conductive plate 124, and a tenth conductive plate 125. The sixth conductive plate 121, the seventh conductive plate 122, the eighth conductive plate 123, the ninth conductive plate 124, and the tenth conductive plate 125 are used to connect the different battery blocks included in the second battery group 12 in series or in parallel. The specific arrangement can be referred to the arrangement of the first conductive plate 115, the second conductive plate 116, the third conductive plate 117, the fourth conductive plate 118, and the fifth conductive plate 119 with the first battery block 111, the second battery block 112, the third battery block 113, and the fourth battery block 114, and will not be described again here.

[0219] In some embodiments, the sixth conductive plate 121, the seventh conductive plate 122, the eighth conductive plate 123, the ninth conductive plate 124, and the tenth conductive plate 125 may be copper sheets or aluminum sheets, without specific limitations.

[0220] In some embodiments, please refer to Figures 11 to 13 The battery pack 10 also includes a third battery group 13, which is located on the side of the second battery group 12 away from the first battery group 11 along the first direction X.

[0221] In some embodiments, please refer to Figures 11 to 13The third battery group 13 also includes an eleventh conductive plate 131, a twelfth conductive plate 132, a thirteenth conductive plate 133, a fourteenth conductive plate 134, and a fifteenth conductive plate 135. The eleventh conductive plate 131, the twelfth conductive plate 132, the thirteenth conductive plate 133, the fourteenth conductive plate 134, and the fifteenth conductive plate 135 are used to connect the different battery blocks included in the third battery group 13 in series or in parallel. The specific arrangement can be referred to the arrangement of the first conductive plate 115, the second conductive plate 116, the third conductive plate 117, the fourth conductive plate 118, and the fifth conductive plate 119 with the first battery block 111, the second battery block 112, the third battery block 113, and the fourth battery block 114, and will not be described again here.

[0222] In some embodiments, the eleventh conductive plate 131, the twelfth conductive plate 132, the thirteenth conductive plate 133, the fourteenth conductive plate 134, and the fifteenth conductive plate 135 may be copper sheets or aluminum sheets, without specific limitations.

[0223] In some embodiments, please refer to Figures 11 to 13 The first connector 30 is connected to both the circuit board 20 and the second conductive plate 116 to electrically connect the circuit board 20 and the second conductive plate 116. The second connector 40 is connected to both the circuit board 20 and the fourteenth conductive plate 134 to electrically connect the circuit board 20 and the fourteenth conductive plate 134. The third connector 50 is connected to both the fourth conductive plate 118 and the ninth conductive plate 124 to electrically connect the fourth conductive plate 118 and the ninth conductive plate 124, thereby electrically connecting the first battery group 11 and the second battery group 12.

[0224] The composition of the second battery group 12 and the third battery group 13, and the specific series and parallel connection of the internal batteries, can refer to the implementation method in any of the embodiments of the first battery group 11 described above, and will not be repeated here.

[0225] In some embodiments, please refer to Figures 11 to 13 The second connector 40 is connected to the third battery group 13, and the second connector 40 electrically connects the third battery group 13 and the circuit board 20. It can make the negative terminal portion of the second connector 40 and the third battery group 13 conductive, or make the positive terminal portion of the second connector 40 and the third battery group 13 conductive.

[0226] In some embodiments, the polarity of the second connector 40 is opposite to that of the first connector 30, which facilitates the connection of the first connector 30 and the second connector 40 to the circuit board 20 with different polarities of the battery pack 10.

[0227] In some embodiments, please refer to Figures 11 to 13The battery module 100 also includes a fourth connector 60, which is connected to and electrically conductive with both the second battery group 12 and the third battery group 13. Along the second direction Y, the fourth connector 60 is located on the side of the battery group 10 opposite to the third connector 50. The fourth connector 60 helps to restrict the mutual movement between the second battery group 12 and the third battery group 13, thereby improving the reliability of the battery group 10.

[0228] In some embodiments, please refer to Figures 11 to 13 The fourth connector 60 is connected to both the seventh conductive plate 122 and the twelfth conductive plate 132 to conduct electricity through the seventh conductive plate 122 and the twelfth conductive plate 132, thereby connecting and conducting electricity through the second battery group 12 and the third battery group 13.

[0229] In some embodiments, please refer to 3. Figures 11 to 13 The fourth connector 60 is at least partially connected to the first sidewall 10a.

[0230] In some embodiments, please refer to Figures 11 to 13 The battery pack 10 also includes a first insulating layer 14, which is disposed between the first battery pack 11 and the circuit board 20. This helps to reduce the risk of short circuits caused by contact between the second conductive plate 116, the third conductive plate 117, or the fourth conductive plate 118 and the circuit board 20.

[0231] In some embodiments, please refer to Figures 11 to 13 The battery pack 10 also includes a second insulating layer 15, which is disposed on the side of the first conductive plate 115 and the fifth conductive plate 119 facing the second battery pack 12. This helps to reduce the risk of short circuit when the first conductive plate 115 or the fifth conductive plate 119 comes into contact with the second battery pack 12.

[0232] In some embodiments, please refer to Figures 11 to 13 The battery pack 10 also includes a third insulating layer 16, which is disposed between the second battery group 12 and the third battery group 13. This helps to reduce the risk of short circuits caused by direct contact between the conductive components of the second battery group 12 and the third battery group 13.

[0233] In some embodiments, please refer to Figure 2 , Figure 14 and Figure 15The first battery group 11 also includes a first support 11a and a second support 11b connected to each other. The first support 11a and the second support 11b are arranged along a first direction X. One end of the first battery block 111, the second battery block 112, the third battery block 113, and the fourth battery block 114 is connected to the first support 11a, and the other end of the first battery block 111, the second battery block 112, the third battery block 113, and the fourth battery block 114 is connected to the second support 11b. The arrangement of the first support 11a and the second support 11b helps to improve the overall integrity of the first battery group 11 and helps to suppress the mutual movement between the multiple batteries 101 of the first battery group 11.

[0234] In some embodiments, the first bracket 11a and the second bracket 11b are engaged, and in other embodiments, the first bracket 11a and the second bracket 11b are bolted or glued together, which helps to improve the suppression of mutual movement between the multiple batteries of the first battery group 11.

[0235] In some embodiments, please refer to Figure 14 Along the first direction X, the first support 11a and the wall opposite to the first battery block 111, the second battery block 112, the third battery block 113 and the fourth battery block 114 are provided with a plurality of first clearance holes 11a 1. Along the first direction X, the end of each battery facing the first support 11a is exposed from one of the first clearance holes 11a 1, which is conducive to connecting multiple batteries in the first battery group 11 in series or in parallel.

[0236] In some embodiments, please refer to Figure 15 Along the first direction X, the second bracket 11b has multiple second clearance holes 11b 1 through the wall opposite to the first battery block 111, the second battery block 112, the third battery block 113 and the fourth battery block 114. Along the first direction X, the end of each battery facing the second bracket 11b is exposed from one of the second clearance holes 11b 1, which is conducive to connecting multiple batteries of the first battery group 11 in series or in parallel.

[0237] In some embodiments, please refer to Figure 1 , Figure 14 and Figure 15 The first connector 30 is also connected to the circuit board 20 and the first bracket 11a, which helps to improve the stability of the connection between the entire first battery group 11 and the circuit board 20.

[0238] In some embodiments, please refer to Figure 1 , Figure 14 and Figure 15 The first connector 30 is connected to the first bracket 11a by bolts.

[0239] In some embodiments, please refer to Figure 1 , Figure 16 and Figure 17 The battery pack 10 also includes a third support 12a and a fourth support 12b connected to each other. The first support 11a, the second support 11b, the third support 12a, and the fourth support 12b are arranged sequentially along the first direction X. The second battery group 12 includes multiple batteries. Along the first direction X, one end of the multiple batteries in the second battery group 12 is connected to the third support 12a, and the other end of the multiple batteries in the second battery group 12 is connected to the fourth support 12b. The arrangement of the third support 12a and the fourth support 12b helps to improve the overall integrity of the second battery group 12 and helps to suppress the mutual movement between the multiple batteries in the second battery group 12.

[0240] In some embodiments, the third bracket 12a and the fourth bracket 12b are engaged, and in other embodiments, the third bracket 12a and the fourth bracket 12b are bolted or glued together, which helps to improve the suppression of mutual movement between the multiple batteries of the second battery group 12.

[0241] In some embodiments, please refer to Figure 16 Along the first direction X, the wall of the third bracket 12a opposite to the multiple batteries of the second battery group 12 is provided with multiple third clearance holes 12a1. Along the first direction X, the portion of each battery facing the end of the third bracket 12a is exposed from one of the third clearance holes 12a1, which is conducive to connecting multiple batteries in the second battery group 12 in series or in parallel.

[0242] In some embodiments, please refer to Figure 17 Along the first direction X, the fourth bracket 12b and the wall opposite to the multiple batteries of the second battery group 12 are provided with multiple fourth clearance holes 12b 1. Along the first direction X, the portion of each battery facing the end of the fourth bracket 12b is exposed from one of the fourth clearance holes 12b 1, which is conducive to connecting multiple batteries in the second battery group 12 in series or in parallel.

[0243] In some embodiments, please refer to Figure 2 A portion of the third connector 50 is connected to the first bracket 11a, and a portion of the third connector 50 is connected to the third bracket 12a, which helps to improve the stability of the connection between the first battery group 11 and the second battery group 12.

[0244] In some embodiments, please refer to Figure 2 The third connector 50 is connected to both the first bracket 11a and the third bracket 12a by bolts.

[0245] In some embodiments, please refer to Figure 2The battery pack 10 also includes a fifth and a sixth bracket connected to each other. The first bracket 11a, the second bracket 11b, the third bracket 12a, the fourth bracket 12b, the fifth bracket, and the sixth bracket are arranged sequentially along the first direction X. The third battery group 13 includes multiple batteries. Along the first direction X, one end of the multiple batteries in the third battery group 13 is connected to the fifth bracket, and the other end of the multiple batteries in the third battery group 13 is connected to the sixth bracket. The arrangement of the fifth and sixth brackets helps to improve the overall integrity of the third battery group 13 and helps to suppress the mutual movement between the multiple batteries in the third battery group 13.

[0246] In some embodiments, please refer to Figure 2 The second connector 40 is connected to the circuit board 20 and the fifth bracket.

[0247] In some embodiments, please refer to Figure 2 The second connector 40 is bolted to the fifth bracket.

[0248] It should be noted that the fifth and sixth supports can also refer to the implementation methods of the first support 11a, the second support 11b, the third support 12a and the fourth support 12b in the above embodiments, which will not be described in detail here.

[0249] In some embodiments, please refer to Figure 2 The circuit board 20 can be a BMS (Battery Management System) board, which can collect parameters such as voltage, temperature, current and voltage of the battery pack 10 to monitor the operating status of the battery pack 10, thereby improving the reliability of the battery module 100.

[0250] In some embodiments, please refer to Figure 1 and Figure 2 When viewed along the second direction Y, the first connector 30 and the first battery group 11 at least partially overlap, which is beneficial for the connection between the first connector 30 and the first battery group 11.

[0251] In some embodiments, please refer to Figure 1 and Figure 2 When viewed along the second direction Y, the third connector 50 overlaps at least partially with the first battery group 11 and at least partially with the second battery group 12, which is beneficial for the third connector 50 to be connected to both the first battery group 11 and the second battery group 12.

[0252] In some embodiments, please refer to Figure 1 and Figure 2When viewed along the second direction Y, the first connector 30 and the third connector 50 at least partially overlap, which helps to restrict the working position of the first battery group 11 and the circuit board 20 by the first connector 30, and the third connector 50 restricts the working position of the first battery group 11 and the second battery group 12 by at least partially overlapping when viewed along the second direction Y, thereby helping to further improve the uniformity of the force on the battery group 10.

[0253] In some embodiments, please refer to Figure 1 and Figure 2 When viewed along the second direction Y, the fourth connector 60 at least partially overlaps with the second battery group 12 and the third battery group 13, which is beneficial for the fourth connector 60 to be connected to both the second battery group 12 and the third battery group 13.

[0254] In some embodiments, please refer to Figure 1 and Figure 3 When viewed along the first direction X, the first connector 30 and the fourth connector 60 at least partially overlap, which helps to further improve the uniformity of the force on the battery pack 10.

[0255] In some embodiments, please refer to Figure 2 and Figure 4 When viewed along the first direction X, the third connector 50 and the second connector 40 at least partially overlap; when viewed along the third direction Z, the third connector 50 and the second connector 40 at least partially overlap, which helps to further improve the uniformity of force on the battery pack 10.

[0256] In some embodiments, please refer to Figure 2 and Figure 4 When viewed along the second direction Y, the second connector 40 overlaps at least partially with the first battery group 11, the second battery group 12 and the third battery group 13, which facilitates the connection between the second connector 40 and the third battery group 13.

[0257] In some embodiments, the battery module 100 further includes a sampling element 70, which is connected and electrically conductive to the circuit board 20, the first battery group 11, the second battery group 12, and the third battery group 13. This facilitates the circuit board 20 to collect parameters such as voltage, temperature, current, and voltage of the first battery group 11, the second battery group 12, and the third battery group 13 through the sampling element 70. This helps to monitor the operating status of the first battery group 11, the second battery group 12, and the third battery group 13, thereby improving the reliability of the battery module 100.

[0258] In the embodiment with a first conductive plate 115, a second conductive plate 116, a third conductive plate 117, a fourth conductive plate 118, and a fifth conductive plate 119, the sampling member 70 is connected to the first conductive plate 115, the second conductive plate 116, the third conductive plate 117, the fourth conductive plate 118, and the fifth conductive plate 119 to achieve connection and electrical conduction with the first battery group 11, and to facilitate the collection of parameters such as voltage, temperature, current, and resistance of each battery block included in the first battery group 11.

[0259] In the embodiment with a sixth conductive plate 121, a seventh conductive plate 122, an eighth conductive plate 123, a ninth conductive plate 124, and a tenth conductive plate 125, the sampling member 70 is connected to the sixth conductive plate 121, the seventh conductive plate 122, the eighth conductive plate 123, the ninth conductive plate 124, and the tenth conductive plate 125 to achieve connection and electrical conduction with the second battery group 12, and to facilitate the collection of parameters such as voltage, temperature, current, and resistance of each battery block included in the second battery group 12.

[0260] In the embodiment with an eleventh conductive plate 131, a twelfth conductive plate 132, a thirteenth conductive plate 133, a fourteenth conductive plate 134, and a fifteenth conductive plate 135, the sampling member 70 is connected to the eleventh conductive plate 131, the twelfth conductive plate 132, the thirteenth conductive plate 133, the fourteenth conductive plate 134, and the fifteenth conductive plate 135 to achieve connection and electrical conduction with the third battery group 13, and to facilitate the collection of parameters such as voltage, temperature, current, and resistance of each battery block included in the third battery group 13.

[0261] In some embodiments, please refer to Figure 5 and Figure 18 The sampling component 70 is located on the side of the battery pack 10 in the third direction Z, so that the battery pack 10 can be installed on a side different from the side where the first connector 30, the second connector 40 and the third connector 50 are provided, thereby improving the space utilization of the battery pack 10.

[0262] In some embodiments, please refer to Figure 5 The sampling element 70 is at least partially connected to the second sidewall 10b.

[0263] In some embodiments, please refer to Figure 18 When viewed along the third direction Z, the sampling component 70 partially overlaps with the first battery group 11, the second battery group 12, and the third battery group 13, which is beneficial for the connection between the sampling component 70 and the first battery group 11, the second battery group 12, and the third battery group 13.

[0264] In some embodiments, please refer to Figure 1The first connector 30 includes a first portion 31 and a second portion 32. The first portion 31 is connected to the first battery pack 11 and extends along a third direction Z, which helps to increase the area where the first connector 30 can be connected to the first battery pack 11. The second portion 32 is connected to the circuit board 20 and extends along a first direction X, which helps to connect the circuit board 20 and the first battery pack 11. As an example, the first portion 31 and the second portion 32 can be combined to form an L-shaped structure or a T-shaped structure.

[0265] In some embodiments, please refer to Figure 2 The second connector 40 includes a third portion 41 and a fourth portion 42. The third portion 41 is connected to the third battery group 13 and extends along a third direction Z, which helps to increase the area where the first connector 30 can be connected to the third battery group 13. The fourth portion 42 is connected to the circuit board 20 and extends along a first direction X, which helps to connect the circuit board 20 and the third battery group 13. As an example, the third portion 41 and the fourth portion 42, when combined, form an L-shaped structure or a T-shaped structure.

[0266] In some embodiments, please refer to Figure 2 and Figure 19 The third connector 50 includes a first main body 51, a first connecting part 52, and a second connecting part 53. The first main body 51 connects the first connecting part 52 and the second connecting part 53. The first connecting part 52 is connected to the first battery group 11, and the second connecting part 53 is connected to the second battery group 12. Along the third direction Z, the width of the first main body 51 is greater than the width of the first connecting part 52, and the width of the first main body 51 is greater than the width of the second connecting part 53. This is beneficial for the third connector 50 to melt under the extreme condition of the battery module 100 generating a large current, thereby facilitating the timely interruption of the circuit and playing the role of protecting the battery module 100 or protecting the device electrically connected to the battery module 100.

[0267] It is understood that in embodiments with a first battery group 11, a second battery group 12, and a third battery group 13, when the battery module 100 is operating, current flows sequentially through the first circuit board 20, the first connector 30, the first battery group 11, the third connector 50, the second battery group 12, the fourth connector 60, the third battery group 13, and the second connector 40, or in the opposite direction. In extreme cases, when a large current flows through the battery module 100, by setting the width of the first main body portion 51 to be greater than the width of the first connector portion 52, and the width of the first main body portion 51 to be greater than the width of the second connector portion 53, the third connector 50 has a narrower width and a weaker strength in the first connector portion 52 and the second connector portion 53. This makes it easier for the first connector portion 52 and the second connector portion 53 to melt when a large current flows through the third connector 50, thereby facilitating timely circuit interruption and protecting the battery module 100 or devices electrically connected to the battery module 100.

[0268] In some embodiments, please refer to Figure 19 The third connector 50 also includes a third connecting portion 54 spaced apart from the first connecting portion 52 and a fourth connecting portion 55 spaced apart from the second connecting portion 53. The first main body portion 51 connects the third connecting portion 54 and the fourth connecting portion 55. The third connecting portion 54 is connected to the first battery group 11, and the fourth connecting portion 55 is connected to the second battery group 12. Along the third direction Z, the width of the first main body portion 51 is greater than the width of the third connecting portion 54, and the width of the first main body portion 51 is greater than the width of the fourth connecting portion 55. By providing the third connecting portion 54 and the fourth connecting portion 55, which are easier to melt than the first main body portion 51, it is beneficial to increase the number of connection points between the third connector 50 and the first battery group 11 and the second battery group 12, thereby improving the effect of the third connector 50 in restricting the mutual movement of the first battery group 11 and the second battery group 12.

[0269] In some embodiments, please refer to Figure 19 and Figure 20The first main body 51 has a first segment 511, a second segment 512, and a third segment 513 connected sequentially along a third direction Z. The first segment 511 connects the first connecting part 52 and the second connecting part 53, and the third segment 513 connects the third connecting part 54 and the fourth connecting part 55. Viewed along a first direction X, the second segment 512 is bent. It should be noted that the first battery group 11 and the second battery group 12 may shift or tend to shift during assembly, transportation, or use. This will cause stress on the third connecting member 50 connecting the first battery group 11 and the second battery group 12. By bending the second segment 512, it is beneficial to deform the third connecting member 50, so that the first segment 511 and the third segment 513 can move closer or further apart in the third direction Z, thereby absorbing stress and reducing the risk of breakage of the first connecting part 52, the second connecting part 53, the third connecting part 54, and the fourth connecting part 55 due to stress.

[0270] In some embodiments, please refer to Figure 19 Along the third direction Z, a first notch 514 is provided on one side of the first main body 51, which is conducive to the deformation of the third connector 50, so that the end of the first segment 511 connected to the first connecting part 52 and the end of the first segment 511 connected to the second connecting part 53 can move closer or further apart in the first direction X, thereby absorbing stress. It also helps to reduce the risk of the first connecting part 52, the second connecting part 53, the third connecting part 54 and the fourth connecting part 55 breaking due to stress.

[0271] In some embodiments, please refer to Figure 19 Along the third direction Z, the first main body 51 has a second notch 515 on the side opposite to the first notch 514, which is conducive to the deformation of the third connector 50, so that the end of the third segment 513 connected to the third connecting part 54 and the end of the third segment 513 connected to the fourth connecting part 55 can be close to or far away from each other in the first direction X, thereby absorbing stress. It also helps to reduce the risk of the first connecting part 52, the second connecting part 53, the third connecting part 54 and the fourth connecting part 55 breaking due to stress.

[0272] In some embodiments, please refer to Figure 19 Looking along the third direction Z, the first notch 514 and the second notch 515 are separated, which helps to reduce the risk of reduced strength caused by the first main body 51 being too narrow between the first notch 514 and the second notch 515.

[0273] In some embodiments, please refer to Figure 19The first main body 51 has a first wall 5141, a second wall 5142, and a third wall 5143 that surround and form a first notch 514. The first wall 5141 and the second wall 5142 are arranged opposite to each other along a first direction X. The third wall 5143 connects the first wall 5141 and the second wall 5142. The third wall 5143 is an arc-shaped wall. The arc-shaped design of the third wall 5143 helps to absorb stress and reduces the risk of the third wall 5143 cracking under stress, thereby reducing the risk of the third connector 50 being damaged under stress.

[0274] In some embodiments, please refer to Figure 19 The first main body 51 has a fourth wall 5151, a fifth wall 5152, and a sixth wall 5153 that enclose and form a second notch 515. The fourth wall 5151 and the fifth wall 5152 are arranged opposite each other along a first direction X. The sixth wall 5153 connects the fourth wall 5151 and the fifth wall 5152, and the sixth wall 5153 is an arc-shaped wall. The arc-shaped design of the sixth wall 5153 helps to absorb stress, reduces the risk of the sixth wall 5153 cracking under stress, and thus reduces the risk of the third connector 50 being damaged under stress.

[0275] In some embodiments, please refer to Figure 19 The first connecting portion 52 has a first region 521 connected to the first battery pack 11. The first connecting portion 52 has a first through hole 522 located between the first region 521 and the first main body portion 51 along the first direction X. The third connecting portion 54 has a second region 541 connected to the first battery pack 11. The third connecting portion 54 has a second through hole 542 located between the second region 541 and the first main body portion 51 along the first direction X. The arrangement of the first through hole 522 and the second through hole 542 helps to further reduce the strength of the first connecting portion 52 and the third connecting portion 54, making the first connecting portion 52 and the third connecting portion 54 easier to melt, thereby facilitating the timely melting of the third connecting member 50 when the battery module 100 is in the extreme condition of generating a large current.

[0276] In some embodiments, please refer to Figure 21 The fourth connector 60 includes a second main body portion 61, a fifth connecting portion 62, a sixth connecting portion 63, a seventh connecting portion 64, and an eighth connecting portion 65. The specific structure of the fourth connector 60 can be referred to the embodiments described above regarding the third connector 50, and will not be repeated here.

[0277] In some embodiments, the first connector 30, the second connector 40, the third connector 50, the fourth connector 60, and the sampling member 70 are made of conductive materials such as copper, aluminum, or nickel.

[0278] In some embodiments, please refer to Figure 22 and Figure 23 The battery module 100 also includes a first housing 80, a second housing 90, and a third housing 91. Along the first direction X, the first housing 80, the second housing 90, and the third housing 91 are arranged in sequence and surround to form a receiving cavity 92. The receiving cavity 92 houses the battery pack 10, the circuit board 20, the first connector 30, the second connector 40, and the third connector 50, which helps to protect the battery pack 10, the circuit board 20, the first connector 30, the second connector 40, and the third connector 50.

[0279] It is understood that in the embodiment where a fourth connector 60 and a sampling member 70 are provided, the fourth connector 60 and the sampling member 70 are disposed within the receiving cavity 92.

[0280] In some embodiments, the first housing, the second housing, and the third housing may be connected by snap-fit, bolt, or adhesive, without any specific limitation.

[0281] Please see Figure 24 The embodiments in this application also provide an electrical device 1000, which includes the battery module 100 in any of the above embodiments. Since the electrical device 1000 adopts the technical solutions of any of the above embodiments, it has at least the beneficial effects brought about by the technical solutions of any of the above embodiments, which will not be described in detail here.

[0282] Among them, electrical equipment 1000 can be drones, electric two-wheelers, cleaning robots, energy storage devices, power tools, etc.

[0283] Furthermore, 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 essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. A battery module, characterized in that, include: The battery pack includes a first battery group and a second battery group arranged along a first direction. The circuit board, along the first direction, is positioned such that the distance between the circuit board and the first battery pack is less than the distance between the circuit board and the second battery pack. A first connector is connected to and electrically conductive to both the first battery pack and the circuit board. Along a second direction perpendicular to the first direction, the first connector is at least partially located on one side of the battery pack. The second connector is connected to and electrically conductive to the circuit board, and along the second direction, the second connector is at least partially located on the side of the battery pack opposite to the first connector; The third connector is connected to and electrically conductive with both the first and second battery groups. Along the second direction, the third connector is located on the side of the battery group opposite to the first connector.

2. The battery module according to claim 1, characterized in that, The first battery pack includes a first battery block, a second battery block, a first conductive plate, a second conductive plate, and a third conductive plate. Along the first direction, the first conductive plate is located on the side of the first battery block and the second battery block facing the second battery pack. The first conductive plate is connected to and electrically conductive with the first battery block and the second battery block. Along the first direction, the second conductive plate and the third conductive plate are located on the side of the first battery block and the second battery block facing the circuit board. The second conductive plate is connected to the first battery block, and the third conductive plate is connected to the second battery block.

3. The battery module according to claim 2, characterized in that, The first battery pack further includes a third battery block, a fourth battery block, a fourth conductive plate, and a fifth conductive plate. The third conductive plate is connected to and electrically conductive with the second battery block and the circuit board. The fourth conductive plate is located between the fourth battery block and the circuit board and is connected to and electrically conductive with the fourth battery block. Along the first direction, the fifth conductive plate is located on the side of the third battery block and the fourth battery block facing the second battery pack and is connected to and electrically conductive with the third battery block and the fourth battery block.

4. The battery module according to claim 3, characterized in that, The fourth conductive plate is connected to the third connector and electrically connects the fourth battery block and the third connector. The second conductive plate is connected to the first connector and electrically connects the first battery block and the first connector.

5. The battery module according to claim 1, characterized in that, The battery pack further includes a first insulating layer, which is disposed between the first battery pack and the circuit board.

6. The battery module according to claim 1, characterized in that, Viewed along the second direction, the first connector at least partially overlaps with the first battery pack.

7. The battery module according to claim 1 or 6, characterized in that, Viewed along the second direction, the third connector at least partially overlaps with the first battery pack, and the third connector at least partially overlaps with the second battery pack.

8. The battery module according to claim 1, characterized in that, Viewed along the second direction, the first connector and the third connector at least partially overlap.

9. The battery module according to claim 1, characterized in that, The third connector includes a first main body, a first connecting part, and a second connecting part. The first main body connects the first connecting part and the second connecting part. The first connecting part is connected to the first battery pack, and the second connecting part is connected to the second battery pack. Along a third direction, the width of the first main body is greater than the width of the first connecting part, and the width of the first main body is greater than the width of the second connecting part. The third direction is perpendicular to both the first direction and the second direction.

10. The battery module according to claim 9, characterized in that, Along the third direction, the third connector further includes a third connecting portion spaced apart from the first connecting portion and a fourth connecting portion spaced apart from the second connecting portion. The first main body portion connects the third connecting portion and the fourth connecting portion. The third connecting portion is connected to the first battery pack, and the fourth connecting portion is connected to the second battery pack. Along the third direction, the width of the first main body portion is greater than the width of the third connecting portion, and the width of the first main body portion is greater than the width of the fourth connecting portion.

11. The battery module according to claim 10, characterized in that, The first main body has a first segment, a second segment, and a third segment connected sequentially along the third direction. The first segment connects the first connecting part and the second connecting part, and the third segment connects the third connecting part and the fourth connecting part. When viewed along the first direction, the second segment is curved.

12. The battery module according to claim 9 or 10, characterized in that, Along the third direction, a first notch is provided on one side of the first main body, and a second notch is provided on the other side of the first main body.

13. The battery module according to claim 12, characterized in that, When viewed along the third direction, the first gap is separate from the second gap.

14. The battery module according to claim 12, characterized in that, The first main body has a first wall, a second wall, and a third wall that surround and form the first gap. The first wall and the second wall are arranged opposite to each other along the first direction. The third wall connects the first wall and the second wall and is an arc-shaped wall.

15. The battery module according to claim 10, characterized in that, The first connecting portion has a first region connected to the first battery pack, and the first connecting portion is provided with a first through hole, which is located between the first region and the first main body portion along the first direction; the third connecting portion has a second region connected to the first battery pack, and the third connecting portion is provided with a second through hole, which is located between the second region and the first main body portion along the first direction.

16. The battery module according to claim 1, characterized in that, The battery pack further includes a third battery group, which is located on the side of the second battery group away from the first battery group along the first direction. The second connector is connected to the third battery group and electrically connected.

17. The battery module according to claim 16, characterized in that, The battery module further includes a fourth connector, which is connected to and electrically conductive with both the second battery group and the third battery group. Along the second direction, the fourth connector is located on the side of the battery group opposite to the third connector.

18. The battery module according to claim 17, characterized in that, Viewed along the second direction, the fourth connector at least partially overlaps with the second battery pack, and the fourth connector at least partially overlaps with the third battery pack.

19. The battery module according to claim 17, characterized in that, Viewed along the first direction, the first connector and the fourth connector at least partially overlap.

20. The battery module according to claim 16, characterized in that, Viewed along the first direction, the third connector at least partially overlaps with the second connector; viewed along the third direction, the third connector at least partially overlaps with the second connector, and the third direction overlaps with both the first and second directions.

21. The battery module according to claim 16, characterized in that, Viewed along the second direction, the second connector at least partially overlaps with the first battery group, the second battery group, and the third battery group.

22. The battery module according to claim 16, characterized in that, The battery module also includes a sampling component, which is connected to and electrically conductive with the circuit board, the first battery group, the second battery group, and the third battery group.

23. The battery module according to claim 22, characterized in that, The sampling device is located on the side of the battery pack facing a third direction, which is perpendicular to both the first and second directions.

24. The battery module according to claim 23, characterized in that, When viewed along the third direction, the sampling element partially overlaps with the first battery group, the second battery group, and the third battery group.

25. The battery module according to claim 1, characterized in that, The first battery pack also includes multiple batteries and connected first and second brackets. The first and second brackets are arranged along the first direction. Along the first direction, one end of each of the multiple batteries in the first battery pack is connected to the first bracket, and the other end is connected to the second bracket. The first connector is connected to the first bracket and electrically connected to the multiple batteries.

26. The battery module according to claim 25, characterized in that, The second battery pack also includes multiple batteries and connected third and fourth brackets. The first bracket, the second bracket, the third bracket, and the fourth bracket are arranged sequentially along the first direction. Along the first direction, one end of each of the multiple batteries in the second battery pack is connected to the third bracket, and the other end is connected to the fourth bracket. A portion of the third connector is connected to the first bracket, and a portion of the third connector is connected to the third bracket.

27. The battery module according to claim 1, characterized in that, The battery module further includes a first housing, a second housing, and a third housing. Along the first direction, the first housing, the second housing, and the third housing are arranged in sequence and surround a receiving cavity, which houses the battery pack, the circuit board, the first connector, the second connector, and the third connector.

28. The battery module according to claim 1, characterized in that, The battery pack has a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall connected in sequence. The first sidewall and the third sidewall are arranged opposite each other along the second direction, and the second sidewall and the fourth sidewall are arranged opposite each other along the third direction. The third direction is perpendicular to both the first direction and the second direction. The first connector is connected to the first sidewall, and both the second connector and the third connector are connected to the third sidewall.

29. An electrical appliance, characterized in that, Includes the battery module as described in any one of claims 1 to 28.

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