Battery pack

Abstract

The utility model relates to the technical field of batteries, and discloses a battery pack which comprises a box body, the box body comprises a box body main body and a hanging structure extending along a first direction, a containing cavity is arranged in the box body main body, and the hanging structure is arranged in the containing cavity and is connected with the box body main body; the battery module is arranged in the accommodating cavity; the battery management unit is arranged in the accommodating cavity; the connecting assembly comprises a cable and a connecting end which are both arranged in the containing cavity and electrically connected with each other, the cable comprises a straight section and a first avoiding section, the straight section extends in the second direction, the two ends, in the second direction, of the first avoiding section are both connected with the straight section and form a first notch, and the hanging structure is at least partially contained in the first notch; and the straight section is electrically connected with the battery management unit through the connecting end. Through the structure, the cable avoids the mounting structure, and interference between the cable and the mounting structure is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery pack. Background Art

[0002] At present, for battery packs with larger lengths, the flexible circuit boards used to collect voltage and temperature information are also longer. There are also many mounting structures in the battery pack, which are prone to interfere with the collection structure, making assembly difficult. Utility Model Content

[0003] The purpose of the utility model is to provide a battery pack that can avoid the mounting structure and prevent interference.

[0004] In order to achieve the above object, the utility model provides a battery pack, comprising:

[0005] A box body having a first direction, a second direction and a third direction intersecting in pairs, the box body comprising a box body main body and a mounting structure extending along the first direction, the box body main body having a receiving cavity, the mounting structure being arranged in the receiving cavity and connected to the box body;

[0006] A battery module is disposed in the accommodating cavity;

[0007] A battery management unit is disposed in the accommodating cavity;

[0008] A connecting component includes a cable and a connecting end which are both arranged in the accommodating cavity and electrically connected to each other, the cable includes a first avoidance section and a plurality of straight sections, the straight section is extended along the second direction, both ends of the first avoidance section along the second direction are connected to the straight section and form a first notch, the mounting structure is at least partially accommodated in the first notch, the straight section is electrically connected to the battery management unit through the connecting end, the straight section and the first avoidance section are electrically connected and at least one of them is connected to the battery module.

[0009] In some embodiments of the present application:

[0010] The position of the cable corresponding to the mounting structure is folded toward one side of the cable along the third direction to form the first notch, the folded portion of the cable forms the first avoidance section, and the unfolded portion of the cable forms the straight section.

[0011] In some embodiments of the present application:

[0012] The first avoidance section includes a first angle, a second angle, a third angle and a fourth angle arranged along the second direction, the second angle is connected to one of the straight sections through the first angle, the third angle is connected to another straight section through the fourth angle, the second angle is connected to the third angle, and the first angle and the second angle enclose at least a part of the first notch.

[0013] In some embodiments of the present application:

[0014] In the second direction, the first fold angle and the fourth fold angle are respectively located on two sides of the mounting structure.

[0015] In some embodiments of the present application, the battery pack further includes:

[0016] An electrical isolation plate is disposed in the accommodating cavity, and the electrical isolation plate is located between the cable and the battery module.

[0017] In some embodiments of the present application:

[0018] The electrical isolation plate is provided with a through hole penetrating along the first direction, the through hole is connected with the first notch in the first direction, and the mounting structure is penetrated through the through hole and the first notch.

[0019] In some embodiments of the present application:

[0020] Along the first direction, the first avoidance section covers at least a portion of the through hole.

[0021] In some embodiments of the present application, the battery pack further includes:

[0022] a collection component, comprising a first collection piece for collecting first information of the battery module, the first collection piece being located on a side of the electrical isolation plate along the first direction facing the cable, the first collection piece being located on at least one side of the straight section along the third direction, the first collection piece being electrically connected to the battery module and the straight section;

[0023] The acquisition component also includes a second acquisition member for acquiring second information of the battery module, the second acquisition member is disposed on a side of the electrical isolation plate away from the cable along the first direction, and the second acquisition member is electrically connected to the straight section.

[0024] In some embodiments of the present application:

[0025] A mounting groove and a first limiting member are provided on one side surface of the electrical isolation plate facing the battery module along the first direction, the mounting groove is located on at least one side of the straight section along the third direction, the second collecting member is at least partially disposed in the mounting groove, the electrical isolation plate is further provided with a channel connecting the mounting groove and the side of the electrical isolation plate facing the cable, the channel is located at one end of the mounting groove facing the straight section along the third direction, the first limiting member is provided on both sides of the channel along the second direction, the first limiting member is located on one side of the second collecting member facing the straight section along the third direction, the first limiting member is used to limit the second collecting member from passing through the channel, the second collecting member is connected to the battery module and electrically connected to the straight section.

[0026] In some embodiments of the present application, the battery pack further includes:

[0027] A second limiter is disposed on the electrical isolation plate, and at least a portion of the second limiter is located on a side of the straight section away from the battery module along the first direction to limit the position of the straight section in the first direction.

[0028] In some embodiments of the present application, the battery pack further includes:

[0029] An anti-wear component, wherein at least a portion of the anti-wear component is arranged on a side of the first avoidance section away from the battery module along the first direction.

[0030] In some embodiments of the present application:

[0031] The connection assembly further includes a plug-in component and a waterproof component, wherein the plug-in component forms the connection end, the plug-in component is arranged on the straight section, and the plug-in component is located at one end of the cable along the second direction;

[0032] The battery management unit also includes a controller and a socket arranged on the controller, the connector is plugged into the socket, the straight section and the controller are electrically connected through the connector, at least a portion of the waterproof component is sleeved on the straight section, and the waterproof component covers the socket.

[0033] In some embodiments of the present application:

[0034] The number of the cables is set to be multiple, and each of the cables is stacked in the first direction. At least one of the cables also includes a second avoidance section, and the straight sections are arranged at both ends of the second avoidance section along the second direction. The second avoidance section and the straight section form a second gap, and the second gap is used to avoid the connection ends of other stacked cables. There is a distance between the straight sections at both ends of the second avoidance section in the third direction.

[0035] In some embodiments of the present application:

[0036] The battery module comprises a shell, a cover and a battery pack, the shell is arranged in the accommodating cavity, a cavity is arranged inside the shell and a second opening communicating with the cavity is arranged in the first direction, the cover is arranged at the second opening, the battery pack is arranged in the cavity, and the electrical isolation plate is arranged between the cover and the battery pack in the first direction;

[0037] The cover body includes a main body and a third avoidance portion arranged on the main body. In the first direction, the position of the third avoidance portion corresponds to the position of the first avoidance section, and the third avoidance portion is recessed in a direction away from the electrical isolation plate to avoid the first avoidance section.

[0038] The utility model provides a battery pack, which has the following beneficial effects compared with the prior art:

[0039] The battery pack of the utility model includes a box, a battery module, a battery management unit and a connection component. A mounting structure is arranged in the box, and the mounting structure is used for hoisting during the manufacturing process of the battery pack. The connection component includes a cable, and a straight section and a first avoidance section are arranged on the cable. The first avoidance section and the straight section form a first gap, and the mounting structure is at least partially arranged in the first gap. Through such a structure, the cable avoids the mounting structure, preventing interference between the cable and the mounting structure, reducing the difficulty of assembly, and reducing the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the structure inside the battery pack of an embodiment of the utility model.

[0041] Figure 2 yes Figure 1 A magnified schematic diagram of center A.

[0042] Figure 3 It is a structural schematic diagram of an electrical isolation plate according to an embodiment of the utility model.

[0043] Figure 4 yes Figure 3 A magnified schematic diagram of point B in the middle.

[0044] Figure 5 yes Figure 3 Enlarged schematic diagram of point C in the middle.

[0045] Figure 6 yes Figure 3 Schematic diagram of the structure of the electrical isolation board from another angle.

[0046] Figure 7 yes Figure 5 Enlarged schematic diagram of point D in the middle.

[0047] Figure 8 It is a schematic diagram of the structure of a battery pack according to an embodiment of the utility model.

[0048] Fig. 9 yes Figure 8 Enlarged schematic diagram of point E in the middle.

[0049] Fig.10 yes Figure 8 Enlarged schematic diagram of point F in the middle.

[0050] Fig.11 yes Figure 2 A schematic diagram showing the first fold angle, the second fold angle, the third fold angle and the fourth fold angle.

[0051] In the figure, 1, box; 2, battery management unit; 3, connection component; 4, electrical isolation plate; 5, collection component; 6, second limiter; 7, anti-wear part; 8, battery module;

[0052] 11. mounting structure; 12. accommodating cavity; 13. box body; 21. controller; 31. cable; 32. connector; 33. waterproof part; 34. second avoidance section; 35. second notch; 36. connecting end; 311. straight section; 312. first avoidance section; 313. first notch; 3121. first folding angle; 3122. second folding angle; 3123. third folding angle; 3124. fourth folding angle; 41. mounting groove; 42. first stopper; 43. channel; 44. through hole; 51. first collection part; 52. second collection part; 81. cover; 811. body; 812. third avoidance part;

[0053] Z, first direction; X, second direction; Y, third direction. DETAILED DESCRIPTION

[0054] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0055] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0056] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] The term "parallel" in this application includes not only the absolute parallel situation, but also the generally parallel situation conventionally recognized in engineering, such as "parallel" refers to the state where the angle formed by a straight line, a straight line and a plane, or a plane and a plane is -1° to 1°; at the same time, "vertical" also includes not only the absolute vertical situation, but also the generally vertical situation conventionally recognized in engineering, such as "vertical" refers to the state where the angle formed by a straight line, a straight line and a plane, or a plane and a plane is 89° to 91°. Equal distances or equal angles include not only the absolute equal situation, but also the generally equal situation conventionally recognized in engineering, that is, there may be a certain error, such as the state where the tolerance range is -1% to 1%.

[0058] In addition, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0059] For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0060] Please refer to Figure 1 and Figure 2 A battery pack according to a preferred embodiment of the utility model includes: a box body 1, a battery module 8, a battery management unit 2 and a connecting component 3.

[0061] The box body 1 has a first direction Z, a second direction X, and a third direction Y that intersect each other. The box body 1 includes a box body body 13 and a mounting structure 11 extending along the first direction Z. The box body body 13 has a receiving cavity 12. The mounting structure 11 is disposed in the receiving cavity 12 and connected to the box body body 13. The mounting structure 11 is disposed in the receiving cavity 12. The mounting structure 11 may be directly connected to the box body 1 and placed in the receiving cavity 12, or the mounting structure 11 may be connected to other components (such as a beam) in the receiving cavity 12 and be located in the receiving cavity 12. No specific limitation is made here.

[0062] In this embodiment, the height direction of the box body 1 is the first direction Z, the length direction of the box body 1 is the second direction X, and the width direction of the box body 1 is the third direction Y. The first direction Z, the second direction X and the third direction Y are perpendicular to each other.

[0063] Please refer to Figure 2 The mounting structure 11 is a column with a lifting hole fixedly arranged on the box body 13. The mounting structure 11 is used to provide a lifting point for the box body 13 during the battery pack manufacturing process to realize the lifting operation.

[0064] The battery module 8 is disposed in the accommodating cavity 12 .

[0065] The battery module may be a battery pack or a battery module.

[0066] The battery management unit 2 is disposed in the accommodating cavity 12 .

[0067] The connecting component 3 includes a cable 31 and a connecting end 36, which are both arranged in the accommodating cavity 12 and electrically connected to each other. The cable 31 includes a first avoidance section 312 and multiple straight sections 311. The straight section 311 is extended along the second direction X. Both ends of the first avoidance section 312 along the second direction X are connected with the straight sections 311 and form a first notch 313. It can be understood that the first avoidance section 312 and the straight sections 311 at both ends jointly form the first notch 313, and the mounting structure 11 is at least partially accommodated in the first notch 313. The straight section 311 is electrically connected to the battery management unit 2 through the connecting end 36. The straight section 311 and the first avoidance section 312 are electrically connected and at least one of them is connected to the battery module.

[0068] In the prior art, the height of the mounting structure 11 is relatively high, and the cable 31 may interfere with the mounting structure 11. In this embodiment, a first avoidance section 312 is provided on the cable 31, so that the cable 31 vacates the position of the mounting structure 11, thereby avoiding the mounting structure 11 and preventing interference between the cable 31 and the mounting structure 11.

[0069] The cable 31 may be provided in one piece. In other words, the straight section 311 and the first avoidance section 312 are merely different positions of the cable 31 .

[0070] In this embodiment, the position of the cable 31 corresponding to the mounting structure 11 is folded toward one side of the cable 31 along the third direction Y to form a first notch 313 , the folded portion of the cable 31 forms a first avoidance section 312 , and the unfolded portion of the cable 31 forms a straight section 311 .

[0071] The cable 31 itself is flexible, and when installed in the battery pack, the cable 31 can be folded to avoid the mounting structure 11, and then folded back to the original planned position after avoiding the mounting structure 11. By folding, there is no need to switch through the wiring harness, reducing the wiring harness cost and line internal resistance.

[0072] In other embodiments, the cable 31 may be provided in separate parts, and the straight section 311 and the first avoidance section 312 are different parts that can be assembled together.

[0073] Please refer to Figure 2 and Fig.11 The first avoidance section 312 includes a first corner 3121, a second corner 3122, a third corner 3123 and a fourth corner 3124 arranged along the second direction X, the second corner 3122 is connected to a straight section 311 through the first corner 3121, the third corner 3123 is connected to another straight section 311 through the fourth corner 3124, the second corner 3122 and the third corner 3123 are connected, and the first corner 3121 and the second corner 3122 enclose at least a part of the first notch 313.

[0074] The first folded corner 3121, the second folded corner 3122, the third folded corner 3123 and the fourth folded corner 3124 are respectively formed by folding the cable 31 four times. Folding four times can allow the first folded corner 3121, the second folded corner 3122, the third folded corner 3123 and the fourth folded corner 3124 to form a recess in the original extension direction of the cable 31, that is, the first notch 313, so that at least a part of the mounting structure 11 is set in the first notch 313, thereby avoiding the mounting structure 11.

[0075] Please refer to Fig.11 The area of ​​the first folded corner 3121 is the area of ​​the overlapping part of the cable 31 after the first folding, the area of ​​the second folded corner 3122 is the area of ​​the cable 31 after the second folding and a part of the part extending before the third folding, the area of ​​the third folded corner 3123 is the area of ​​the cable 31 after the third folding and another part extending before the third folding, and the area of ​​the fourth folded corner 3124 is the area of ​​the overlapping part of the cable 31 after the fourth folding.

[0076] In this embodiment, in the second direction X, the first folded corner 3121 and the fourth folded corner 3124 are respectively located on two sides of the mounting structure 11 .

[0077] When the cable 31 encounters the mounting structure 11, it is first folded once in the third direction Y to form a first folded angle 3121. At this time, the extension direction of the cable 31 is extended in the third direction Y, and then folded once to form a second folded angle 3122. At this time, the extension direction of the cable 31 returns to the second direction X. When it is about to pass through the mounting structure 11, the other direction of the cable 31 that is deviated from the third direction Y is folded once to form a third folded angle 3123, and then folded once in the second direction X to form a fourth folded angle 3124, thereby allowing the cable 31 to return to the extension direction before the first folding, that is, the two straight sections 311 before and after the folding are on the same straight line.

[0078] Therefore, the first avoidance section 312 can be set by workers only during installation, without the need to set up additional procedures or workstations to reprocess the cable 31. The first avoidance section 312 can be set relatively easily, thereby realizing the avoidance mounting structure 11.

[0079] In some embodiments, the battery pack further includes an electrical isolation plate 4 , which is disposed in the accommodating cavity 12 , and the electrical isolation plate 4 is located between the cable 31 and the battery module 8 .

[0080] In the battery pack, the electrical isolation board 4 carries the connecting piece, the cable 31 and the acquisition component to achieve the connection of the battery pack or the single cell of the battery module 8, transmit data and collect the voltage, temperature and other related data of the battery pack or the single cell.

[0081] Please refer to Figure 2 The electrical isolation plate 4 is provided with a through hole 44 penetrating along the first direction Z. The through hole 44 is connected to the first notch 313 in the first direction Z. The mounting structure 11 is penetrated through the through hole 44 and the first notch 313 .

[0082] Since the mounting structure 11 is relatively high, the mounting structure 11 will interfere with the electrical isolation plate 4. A through hole 44 is provided on the electrical isolation plate 4 to allow the mounting structure 11 to pass through, so that the electrical isolation plate 4 avoids the mounting structure 11. The cable 31 also has a first avoidance section 312 here to avoid the mounting structure 11.

[0083] Along the first direction Z, the first avoidance section 312 covers at least a portion of the through hole 44 .

[0084] The aperture of the through hole 44 is larger than the mounting structure 11. If the first avoidance section 312 completely avoids the through hole 44, the first notch 313 will also be too large, resulting in excessive space occupation and material waste after the cable 31 is folded. The purpose of setting the first avoidance section 312 is to avoid the mounting structure 11, not to avoid the through hole 44. Therefore, the first avoidance section 31 can cover at least part of the through hole 44 to reduce space occupation and reduce material usage.

[0085] In some embodiments, the battery pack further includes a collection component 5, the collection component 5 includes a first collection member 51 for collecting the voltage of the battery module 8, the first collection member 51 is located on a side of the electrical isolation plate 4 along the first direction Z facing the cable 31, the first collection member 51 is located on at least one side of the straight section 311 along the third direction Y, and the first collection member 51 is electrically connected to the battery module 8 and the straight section 311;

[0086] The collection assembly 5 further includes a second collection member 52 for collecting the temperature of the battery module 8 . The second collection member 52 is disposed on a side of the electrical isolation plate 4 away from the cable 31 along the first direction Z. The second collection member 52 is electrically connected to the straight section 311 .

[0087] Please refer to Figure 3-4 The first collecting component 51 is used to collect the first information of the battery module 8. The straight section 311 of the cable 31 that is not folded is connected to the first collecting component 51, and the first avoidance section 312 formed by folding is not connected to the first collecting component 51. The mounting structure 11 extends upward from the bottom of the box body 13. Therefore, the single battery of the battery module 8 at the mounting structure 11 also needs to avoid the mounting structure 11, and the first collecting component 51 is not set here.

[0088] Please refer to Figure 6-7 The second collecting member 52 is used to collect the second information of the battery module 8, and is also arranged on the straight section 311 of the cable 31 that is not folded, and the first avoidance section 312 formed by folding is not connected to the second collecting member 52. The first information may be one of the voltage information and the temperature information of the battery module, and the second information may be the other of the voltage information and the temperature information of the battery module.

[0089] The first collecting member 51 is disposed above the electrical isolation plate 4 , and the first collecting member 51 may be disposed on the connecting sheet, while the second collecting member 52 is disposed below the electrical isolation plate 4 , closer to the single cells of the battery module 8 .

[0090] In some embodiments, a mounting groove 41 and a first limiting member 42 are provided on a side surface of the electrical isolation plate 4 along the first direction Z toward the battery module 8, the mounting groove 41 is located on at least one side of the straight section 311 along the third direction Y, the second collecting member 52 is at least partially disposed in the mounting groove 41, the electrical isolation plate 4 is further provided with a channel 43 connecting the mounting groove 41 and the side of the electrical isolation plate 4 toward the cable 31, the channel 43 is located at one end of the mounting groove 41 along the third direction Y toward the straight section 311, the first limiting member 42 is provided on both sides of the channel 43 along the second direction X, the first limiting member 42 is located on one side of the second collecting member 52 along the third direction Y toward the straight section 311, the first limiting member 42 is used to limit the second collecting member 52 from passing through the channel 43, the second collecting member 52 is connected to the battery module 8, and is electrically connected to the straight section 311.

[0091] Since a wire connection is set between the second collecting member 52 and the straight section 311, the second collecting member 52 is set in the installation groove 41, and the channel 43 is used for the wire to pass through. At the same time, in order to limit the second collecting member 52 to maintain its position in the installation groove 41, a first limiting member 42 is set to block the second collecting member 52 and prevent the second collecting member 52 from leaving the installation groove 41 through the channel 43.

[0092] In this embodiment, the second collecting member 52 is bonded in the installation groove 41 .

[0093] In some embodiments, the battery pack also includes a second limiter 6, which is disposed on the electrical isolation plate 4, and at least a portion of the second limiter 6 is located on the side of the straight section 311 away from the battery module 8 along the first direction Z to limit the position of the straight section 311 in the first direction Z.

[0094] Please refer to Figure 5 The second limiting member 6 is configured in a strip shape and is arranged above the cable 31 and crosses the cable 31 . The second limiting member 6 is hot-melted on the electrical isolation plate 4 to limit the height of the cable 31 .

[0095] In some embodiments, the battery pack further includes an anti-wear component 7 , and at least a portion of the anti-wear component 7 is disposed on a side of the first avoidance section 312 away from the battery module 8 along the first direction Z.

[0096] Since the first avoidance section 312 is formed by folding the cable 31, there will be a rebound phenomenon at the folding point, which will cause the height of the first avoidance section 312 to be higher. In order to prevent the first avoidance section 312 from being worn by other structures in the battery pack, an anti-wear part 7 is provided to protect the first avoidance section 312.

[0097] The anti-wear member 7 may be an anti-wear cloth, which is wrapped around the first avoidance section 312 , thereby protecting the first avoidance section 312 .

[0098] In some embodiments, the connection assembly 3 further includes a connector 32 and a waterproof member 33, the connector 32 forms a connection end 36, the connector 32 is disposed on the straight section 311, and the connector 32 is located at one end of the cable 31 along the second direction X;

[0099] The battery management unit 2 also includes a controller 21 and a socket arranged on the controller 21, a connector 32 is inserted into the socket, the straight section 311 and the controller 21 are electrically connected via the connector 32, at least a portion of the waterproof component 33 is sleeved on the straight section 311, and the waterproof component 33 covers the socket.

[0100] The connector 32 is used to electrically connect the cable 31 to the battery management unit 2 .

[0101] Due to the influence of various factors such as the temperature change outside the battery pack, the heating of the internal battery and the cooling of the water cooling plate, condensation is easily formed on the surface of the internal structure of the battery pack. In order to prevent condensation from affecting the connection between the plug connector 32 and the socket on the controller 21, a waterproof member 33 is provided to cover the socket, thereby shielding the connection between the plug connector 32 and the controller 21, thereby playing a role in preventing condensation.

[0102] In some embodiments, please refer to Figure 5 and Fig.10 The number of cables 31 is set to be multiple, and each cable 31 is stacked in the first direction Z. At least one cable 31 also includes a second avoidance section 34. The straight sections 311 are arranged at both ends of the second avoidance section 34 along the second direction X. The second avoidance section 34 and the straight section 311 form a second gap 35. The second gap 35 is used to avoid the connection ends 36 of other stacked cables 31. There is a distance between the straight sections 311 at both ends of the second avoidance section 34 in the third direction Y.

[0103] Although there may be multiple cables 31 , the stacked cables 31 need to be separated at the connection ends 36 to avoid the connection positions of other cables 31 and the controller 21 .

[0104] In this embodiment, the second avoidance section 34 is also folded like the first avoidance section 312. Since the purpose of the second avoidance section 34 is to stagger the positions of the connection ends 36 of the cables 31, the sockets of the controller 21 are usually only arranged adjacent to each other, and the orientations of the sockets are the same. Therefore, the second avoidance section 34 only needs to be folded twice, that is, to form two corners so that it can be staggered with the connection ends 36 of other cables 31, and at the same time, it does not affect its own connection with the socket of the controller 21.

[0105] There is a distance between the straight sections 311 at both ends of the second avoidance section 34 in the third direction Y because the second avoidance section 34 is provided so that the straight sections 311 at both ends of the second avoidance section 34 are not on the same straight line, so as to achieve the purpose of avoiding the connecting end 36 .

[0106] In some embodiments, please refer to Figure 8-Figure 10 The battery module 8 includes a shell, a cover 81 and a battery pack. The shell is arranged in the accommodating cavity 12. A cavity is arranged inside the shell and a second opening connected to the cavity is arranged in the first direction Z. The cover 81 is covered at the second opening. The battery pack is arranged in the cavity. In the first direction Z, the electrical isolation plate 4 is arranged between the cover 81 and the battery pack.

[0107] The cover body 81 includes a main body 811 and a third avoidance portion 812 arranged on the main body 811. In the first direction Z, the position of the third avoidance portion 812 corresponds to the position of the first avoidance section 312, and the third avoidance portion 812 is recessed in a direction away from the electrical isolation plate 4 to avoid the first avoidance section 312.

[0108] In this embodiment, since the cover body 81 is provided, the cover body 81 will contact the first avoidance section 312, causing the cover body 81 to wear the first avoidance section 312. By providing the third avoidance portion 812, the third avoidance portion 812 protrudes upward, thereby avoiding the first avoidance section 312 and preventing the first avoidance section 312 from being worn.

[0109] A third avoidance portion 812 corresponding to the second avoidance section 34 may also be provided. The third avoidance portion 612 avoids the second avoidance section 34 to prevent the first avoidance section 312 from being worn.

[0110] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A battery pack, characterized in that: include: A box (1) has a first direction (Z), a second direction (X) and a third direction (Y) intersecting in pairs, the box (1) comprising a box body (13) and a mounting structure (11) extending along the first direction (Z), the box body (13) having a receiving cavity (12) therein, the mounting structure (11) being arranged in the receiving cavity (12) and connected to the box body (13); A battery module (8) is arranged in the accommodating cavity (12); A battery management unit (2) is arranged in the accommodating cavity (12); A connection assembly (3) comprises a cable (31) and a connection end (36) both of which are arranged in the accommodating cavity (12) and electrically connected to each other, the cable (31) comprising a first avoidance section (312) and a plurality of straight sections (311), the straight sections (311) extending along the second direction (X), both ends of the first avoidance section (312) along the second direction (X) being connected to the straight sections (311) and forming a first notch (313), the mounting structure (11) being at least partially accommodated in the first notch (313), the straight section (311) being electrically connected to the battery management unit (2) via the connection end (36), the straight section (311) being electrically connected to the first avoidance section (312) and at least one of them being connected to the battery module (8).

2. The battery pack according to claim 1, characterized in that: The cable (31) is folded toward one side of the cable (31) along the third direction (Y) at a position corresponding to the mounting structure (11) to form the first notch (313); the folded portion of the cable (31) forms the first avoidance section (312), and the unfolded portion of the cable (31) forms the straight section (311).

3. The battery pack according to claim 2, characterized in that: The first avoidance section (312) comprises a first folded angle (3121), a second folded angle (3122), a third folded angle (3123) and a fourth folded angle (3124) arranged along the second direction (X); the second folded angle (3122) is connected to one of the straight sections (311) via the first folded angle (3121); the third folded angle (3123) is connected to another of the straight sections (311) via the fourth folded angle (3124); the second folded angle (3122) and the third folded angle (3123) are connected; the first folded angle (3121) and the second folded angle (3122) enclose at least a portion of the first notch (313).

4. The battery pack according to claim 3, characterized in that: In the second direction (X), the first folded angle (3121) and the fourth folded angle (3124) are respectively located on two sides of the mounting structure (11).

5. The battery pack according to claim 1, characterized in that: The battery pack further comprises: An electrical isolation plate (4) is disposed in the accommodating cavity (12), and the electrical isolation plate (4) is located between the cable (31) and the battery module (8).

6. The battery pack according to claim 5, characterized in that: The electrical isolation plate (4) is provided with a through hole (44) penetrating along the first direction (Z), the through hole (44) is connected to the first notch (313) in the first direction (Z), and the mounting structure (11) is penetrated through the through hole (44) and the first notch (313).

7. The battery pack according to claim 6, characterized in that: Along the first direction (Z), the first avoidance section (312) covers at least a portion of the through hole (44).

8. The battery pack according to claim 5, characterized in that: Also includes: A collection component (5), comprising a first collection piece (51) for collecting first information of the battery module (8), the first collection piece (51) being located on a side of the electrical isolation plate (4) along the first direction (Z) facing the cable (31), the first collection piece (51) being located on at least one side of the straight section (311) along the third direction (Y), and the first collection piece (51) being electrically connected to the battery module (8) and the straight section (311); And / or, the acquisition component (5) comprises a second acquisition component (52) for acquiring second information of the battery module (8), the second acquisition component (52) being arranged on a side of the electrical isolation plate (4) away from the cable (31) along the first direction (Z), and the second acquisition component (52) being electrically connected to the straight section (311).

9. The battery pack according to claim 8, characterized in that: A mounting groove (41) and a first limiting member (42) are provided on a side surface of the electrical isolation plate (4) facing the battery module (8) along the first direction (Z); the mounting groove (41) is located on at least one side of the straight section (311) along the third direction (Y); the second collecting member (52) is at least partially arranged in the mounting groove (41); the electrical isolation plate (4) is further provided with a channel (43) connecting the mounting groove (41) and a side of the electrical isolation plate (4) facing the cable (31); the channel (43) is located at one end of the mounting groove (41) facing the straight section (311) along the third direction (Y); the first limiting member (42) is arranged on both sides of the channel (43) along the second direction (X); and the first limiting member (42) is located on a side of the second collecting member (52) facing the straight section (311) along the third direction (Y).

10. The battery pack according to claim 5, characterized in that: The battery pack further comprises: A second limiting member (6) is arranged on the electrical isolation plate (4), and at least a portion of the second limiting member (6) is located on a side of the straight section (311) away from the battery module (8) along the first direction (Z) to limit the position of the straight section (311) in the first direction (Z).

11. The battery pack according to claim 1, characterized in that: Also includes: An anti-wear component (7), wherein at least a portion of the anti-wear component (7) is arranged on a side of the first avoidance section (312) away from the battery module (8) along the first direction (Z).

12. The battery pack according to claim 1, characterized in that: The connection assembly (3) further comprises a plug-in connector (32) and a waterproof component (33), wherein the plug-in connector (32) forms the connection end (36), the plug-in connector (32) is arranged on the straight section (311), and the plug-in connector (32) is located at one end of the cable (31) along the second direction (X); The battery management unit (2) further comprises a controller (21) and a socket arranged on the controller (21), the connector (32) being inserted into the socket, the straight section (311) and the controller (21) being electrically connected via the connector (32), at least a portion of the waterproof component (33) being sleeved on the straight section (311), and the waterproof component (33) covering the socket.

13. The battery pack according to claim 1, characterized in that: The number of the cables (31) is set to be multiple, and each of the cables (31) is stacked in the first direction (Z). At least one of the cables (31) further comprises a second avoidance section (34). The straight sections (311) are arranged at both ends of the second avoidance section (34) along the second direction (X). The second avoidance section (34) and the straight section (311) form a second gap (35). The second gap (35) is used to avoid the connection ends (36) of other stacked cables (31). There is a distance between the straight sections (311) at both ends of the second avoidance section (34) in the third direction (Y).

14. The battery pack according to claim 5, characterized in that: The battery module (8) comprises a shell, a cover (81) and a battery pack, the shell being arranged in the accommodating cavity (12), a cavity being arranged inside the shell and a second opening being arranged in the first direction (Z) and communicating with the cavity, the cover (81) being arranged to cover the second opening, the battery pack being arranged in the cavity, and the electrical isolation plate (4) being arranged between the cover (81) and the battery pack in the first direction (Z); The cover body (81) includes a main body (811) and a third avoidance portion (812) arranged on the main body (811); in the first direction (Z), the position of the third avoidance portion (812) corresponds to the position of the first avoidance section (312), and the third avoidance portion (812) is recessed in a direction away from the electrical isolation plate (4) to avoid the first avoidance section (312).

Images