Battery pack and electric device

Abstract

The utility model discloses a battery pack and a power utilization device, the battery pack has a first direction and a second direction which are intersected, the battery pack comprises a battery pack, a liquid cooling plate, a plate piece, a conductive structure and a flexible fixing piece, the battery pack comprises a plurality of battery monomers arranged along the first direction, and the liquid cooling plate is arranged at one side of the battery pack along the second direction and is connected with the battery monomers; the plate is connected to one side of the liquid cooling plate away from the battery pack; the conductive structure is conductively connected with the battery pack and is partially arranged on one side, far away from the liquid cooling plate, of the plate; the flexible fixing part is connected with the plate and the conductive structure. The liquid cooling plate is used for providing a supporting surface for the plate, a supporting frame does not need to be additionally arranged for fixing the plate, and on the basis, the conductive structure is fixed to the plate through the flexible fixing piece, so that the fixing structure of the conductive structure is simplified, space occupation is reduced, layout of all structures in the battery pack is better facilitated, and the battery pack is more convenient to use. And the volume energy density of the battery pack is improved.

Description

Technical Field

[0001] This application belongs to the technical field of batteries, and particularly relates to a battery pack and an electrical device. Background Art

[0002] After multiple battery cells in a battery pack are connected in series and parallel, multiple strands of wire harnesses are required for overcurrent and signal transmission. The multiple strands of wire harnesses are usually wound around the battery pack composed of multiple battery cells, and the multiple strands of wire harnesses need to be fixed to ensure the safety of the circuits in the battery pack. However, the current wire harness fixing structure is complex and occupies a large space, which is not conducive to improving the volume energy density of the battery pack. Summary of the Utility Model

[0003] Utility Model Objective: The embodiments of this application provide a battery pack, aiming to solve the problems that the existing fixing structure of multiple strands of wire harnesses is complex and occupies a large space, which is not conducive to improving the volume energy density of the battery pack; another objective of the embodiments of this application is to provide an electrical device.

[0004] Technical Solution: The battery pack described in the embodiments of this application has a first direction and a second direction that intersect, and includes a battery pack, a liquid cooling plate, a plate member, a conductive structure, and a flexible fixing member. The battery pack includes multiple battery cells arranged along the first direction. The liquid cooling plate is disposed on one side of the battery pack along the second direction and is connected to the battery cells; the plate member is connected to the side of the liquid cooling plate away from the battery pack; the conductive structure is electrically connected to the battery pack, and a part of the conductive structure is disposed on the side of the plate member away from the liquid cooling plate; the flexible fixing member is respectively connected to the plate member and the conductive structure.

[0005] In some embodiments, the plate member has a groove, and the groove is disposed on the side of the plate member facing the liquid cooling plate; the battery pack includes an adhesive layer, and the adhesive layer is accommodated in the groove and is respectively connected to both the liquid cooling plate and the plate member.

[0006] In some embodiments, the plate member has multiple such grooves, and the multiple grooves are arranged in an array on the side of the plate member facing the liquid cooling plate; the battery pack includes multiple such adhesive layers, and each adhesive layer is accommodated in one groove.

[0007] In some embodiments, the battery pack has a third direction that intersects with both the first direction and the second direction; the plate member has a through hole, and the through hole penetrates the plate member along the third direction. The through hole is disposed on the side of the groove away from the liquid cooling plate, a part of the flexible fixing member passes through the through hole, and the flexible fixing member surrounds the conductive structure.

[0008] In some embodiments, the plate member includes:

[0009] A main body, with the groove disposed on a side of the main body facing the liquid cooling plate. The adhesive layer is accommodated in the groove, and the adhesive layer is connected to both the main body and the liquid cooling plate respectively;

[0010] A convex portion is disposed on a side of the main body away from the liquid cooling plate, and the convex portion is connected to the main body; the through hole is disposed in the convex portion, and the through hole penetrates the convex portion along the third direction.

[0011] In some embodiments, the plate member includes a plurality of the convex portions, and the plurality of convex portions are all connected to the main body and are spaced apart along the third direction; the plate member includes a plurality of the through holes, each through hole is disposed in one convex portion, and each through hole penetrates one convex portion along the third direction; the battery pack includes a plurality of the flexible fixing members, and each flexible fixing member passes through one through hole.

[0012] In some embodiments, along the third direction, the central axes of two adjacent through holes do not coincide.

[0013] In some embodiments, the convex portion includes:

[0014] A first transition section, connected to the main body;

[0015] A positioning section, connected to an end of the first transition section away from the main body;

[0016] A second transition section, connected to an end of the positioning section away from the first transition section, and an end of the second transition section close to the main body is connected to the main body;

[0017] Wherein, the first transition section, the positioning section, the second transition section and the main body enclose the through hole.

[0018] In some embodiments, the battery pack includes a plurality of the plate members, and the plurality of plate members are spaced apart along the first direction.

[0019] Correspondingly, an electrical device according to an embodiment of the present application includes the battery pack according to any one of the foregoing embodiments.

[0020] Beneficial effects: Compared with the prior art, a battery pack according to an embodiment of the present application has intersecting first and second directions, and includes a battery pack, a liquid cooling plate, a plate member, a conductive structure, and a flexible fixing member. The battery pack includes a plurality of battery cells arranged along the first direction, the liquid cooling plate is disposed on one side of the battery pack along the second direction and is connected to the battery cells; the plate member is connected to the side of the liquid cooling plate away from the battery pack; the conductive structure is electrically connected to the battery pack, and a part of the conductive structure is disposed on the side of the plate member away from the liquid cooling plate; the flexible fixing member is respectively connected to the plate member and the conductive structure. In the present application, by fixing the plate member on the side of the liquid cooling plate away from the battery pack, the existing liquid cooling plate in the battery pack is used to provide a supporting surface for the plate member, and there is no need to additionally provide a support frame to fix the plate member. On this basis, the conductive structure is fixed on the plate member by using the flexible fixing member, so as to simplify the fixing structure of the conductive structure, reduce the space occupied by the battery pack, be more conducive to the layout of each structure in the battery pack, and be beneficial to improving the volume energy density of the battery pack.

[0021] Compared with the prior art, an electrical device according to an embodiment of the present application includes the battery pack as described in any one of the foregoing embodiments. It can be understood that the electrical device of the present application includes all the technical features and technical effects of the foregoing battery pack, which will not be elaborated herein. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 is an overall structural schematic diagram of a battery pack according to an embodiment of the present application;

[0024] Figure 2 is an exploded view of a battery pack according to an embodiment of the present application;

[0025] Figure 3 is a structural schematic diagram of the connection between the conductive structure and the liquid cooling plate when the conductive structure is a wire harness according to an embodiment of the present application;

[0026] Figure 4 is a structural schematic diagram of the connection between the conductive structure and the liquid cooling plate when the conductive structure is a copper busbar according to an embodiment of the present application;

[0027] Figure 5 is an exploded view of the plate member, the liquid cooling plate, the conductive structure, the flexible fixing member, and the adhesive layer according to an embodiment of the present application;

[0028] Figure 6 is Figure 5 an exploded view of part A in

[0029] Figure 7 is Figure 5 An exploded view of part B in it;

[0030] Figure 8 It is a schematic diagram of the overall structure of the plate member of the embodiment of the present application;

[0031] Figure 9 It is a schematic diagram of the structure of the plate member of the embodiment of the present application on the side facing the liquid cooling plate;

[0032] Figure 10 It is a schematic diagram of the side of the plate member of the embodiment of the present application facing away from the liquid cooling plate.

[0033] Figure 11 It is a schematic diagram of the plate member of the embodiment of the present application along the central axis direction of the through hole.

[0034] Reference numerals: 1, battery pack; 11, battery cell; 2, liquid cooling plate; 3, plate member; 31, groove; 32, through hole; 321, central axis; 33, body; 34, convex part; 341, first transition section; 342, fixed section; 343, second transition section; 4, conductive structure; 5, flexible fixing member; 6, adhesive layer; 7, box body; 71, accommodating cavity; X, first direction; Y, second direction; Z, third direction. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0036] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality of" means two or more, and at least one means one, two or more, unless otherwise specifically defined. In the description of the present application, "vertical" means completely vertical at 90° or almost completely vertical. For example, within the range of an included angle of 80° to 100°, it is considered vertical. Similarly, "parallel" means completely parallel or almost completely parallel. For example, within a range of 10° of complete parallelism, it is considered parallel.

[0037] It should also be noted that in the drawings of the present application, an arrow marked with X indicates the first direction X, an arrow marked with Y indicates the second direction Y, and an arrow marked with Z indicates the third direction Z. The introduction of the first direction X, the second direction Y, and the third direction Z is for the convenience of describing the structural positional relationship of the battery pack, and thus facilitating the understanding of its structure. In the embodiments of the present application, the first direction X is the arrangement direction of a plurality of battery cells 11; the second direction Y is the arrangement direction of the battery pack 1 and the liquid cooling plate 2; the third direction Z is the height direction of the battery cell 11; and the first direction X, the second direction Y, and the third direction Z intersect with each other. Further, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0038] The interior of the battery pack includes a plurality of battery cells. The plurality of battery cells need to be connected in series and / or in parallel and input and output through a unified conductive structure. In addition, there are also some other structures, such as a liquid cooling plate and a high-voltage distribution box, etc. Among them, the conductive structure, the liquid cooling plate, the high-voltage distribution box, etc. all have requirements for the internal structure layout space of the battery pack. At the same time, the conductive structure also needs a corresponding fixing structure to fix it inside the battery to ensure the internal safety of the battery pack. However, the fixing structure for the conductive structure usually requires a relatively large space, thus causing the internal space of the battery pack to be occupied, which is not conducive to the improvement of the volume energy density of the battery pack.

[0039] In view of this, the embodiments of the present application provide a battery pack, aiming to solve the above problems.

[0040] Please refer toFigures 1-7 , a battery pack according to an embodiment of the present application has intersecting first direction X and second direction Y, and includes a battery pack 1, a liquid cooling plate 2, a plate member 3, a conductive structure 4 and a flexible fixing member 5. The battery pack 1 includes a plurality of battery cells 11 arranged along the first direction X. The liquid cooling plate 2 is arranged on one side of the battery pack 1 along the second direction Y and is connected to the battery cells 11. The plate member 3 is connected to the side of the liquid cooling plate 2 away from the battery pack 1. The conductive structure 4 is electrically connected to the battery pack 1, and a part of the conductive structure 4 is arranged on the side of the plate member 3 away from the liquid cooling plate 2. The flexible fixing member 5 is respectively connected to the plate member 3 and the conductive structure 4.

[0041] In the embodiment of the present application, by fixing the plate member 3 on the side of the liquid cooling plate 2 away from the battery pack 1, the liquid cooling plate 2 is used to provide a support surface for the plate member 3, and there is no need to additionally provide a support frame to fix the plate member 3. On this basis, the flexible fixing member 5 is used to fix the conductive structure 4 on the plate member 3, thus simplifying the fixing structure of the conductive structure 4, reducing the space occupation, being more conducive to the layout of each structure in the battery pack, and being beneficial to improving the volume energy density of the battery pack.

[0042] It should be noted that the battery pack includes a box body 7, and the box body 7 has a receiving cavity 71. The battery pack usually has at least one battery pack 1 according to requirements. To ensure the safety of the battery pack 1, a liquid cooling plate 2 is further arranged on the side of the battery pack 1 to cool the battery cells 11 of the battery pack 1. Both the liquid cooling plate 2 and the battery pack 1 are arranged in the receiving cavity 71. To reduce the weight of the battery pack and improve the space utilization rate of the receiving cavity 71, the liquid cooling plate 2 is usually combined with the side plate, that is, the liquid cooling plate 2 is used as the side plate, and the liquid cooling plate 2 extends along the arrangement direction of the plurality of battery cells 11 in the battery pack 1, and the liquid cooling plate 2 is connected to the plurality of battery cells 11, so as to realize the fixation and cooling of the plurality of battery cells 11 of the battery pack 1 by the liquid cooling plate 2. The conductive structure 4 is used to realize the current or signal transmission in the battery pack. It is usually wound around the outer peripheral side of the battery pack 1, and the conductive structure 4 is located between the liquid cooling plate 2 and the inner side wall of the battery pack box body 7. In the present application, the plate member 3 is pasted on the existing liquid cooling plate 2 in the battery pack, and the plate member 3 is used to provide a fixing fulcrum for the flexible fixing member 5, so as to facilitate the binding of the flexible fixing member 5 to the conductive structure 4. At this time, the space between the liquid cooling plate 2 and the inner side wall of the box body 7 can be reduced, and especially when the space between the liquid cooling plate 2 and the inner side wall of the box body 7 is small, a good fixing effect of the conductive structure 4 can still be maintained.

[0043] It should also be noted that the conductive structure 4 in the embodiment of the present application can be a wire harness or a conductive copper bar. Both can be used for signal transmission.

[0044] It should also be noted that, in the embodiments of the present application, the flexible fixing member 5 can be a flexible cable tie. The cable tie is connected to the plate member 3, and the conductive structure 4 is close to the plate member 3. The cable tie binds the conductive structure 4 to achieve the fixation of the conductive structure 4. The cable tie can be directly welded to the plate member 3, or glued to the plate member 3, or the plate member 3 is provided with fixing holes, and the cable tie is partially inserted into the fixing holes to realize the connection between the cable tie and the plate member 3. The flexible fixing member 5 can also be an elastic buckle arranged oppositely. The two elastic buckles and the plate member 3 can be integrally connected. At this time, the two elastic buckles and the plate member 3 jointly enclose a fixing space. At this time, the conductive structure 4 can outwardly expand the elastic buckle and enter the elastic space, and then the elastic buckle resets to realize the fixed limit of the conductive structure 4. The flexible fixing member 5 can also be other flexible and variable fixing structures that can realize the binding of the conductive structure 4 and can be deformed to adapt to the space size.

[0045] It should also be noted that the plate member 3 in the embodiments of the present application is connected to the liquid cooling plate 2. It can be a welded connection between the plate member 3 and the liquid cooling plate 2, or the plate member 3 is glued to the liquid cooling plate 2. At this time, the connection between the plate member 3 and the liquid cooling plate 2 can reduce other redundant connection structures, and avoid the redundant structures occupying space and increasing the overall weight of the battery pack.

[0046] As Figure 9 shown, in some embodiments, the plate member 3 has a groove 31, and the groove 31 is arranged on the side of the plate member 3 facing the liquid cooling plate 2; the battery pack includes an adhesive layer 6, and the adhesive layer 6 is accommodated in the groove 31 and is connected to both the liquid cooling plate 2 and the plate member 3.

[0047] In the embodiments of the present application, an adhesive layer 6 can be arranged between the liquid cooling plate 2 and the plate member 3, and the adhesive layer 6 is used to bond the liquid cooling plate 2 and the plate member 3 respectively to realize the adhesive connection between the plate member 3 and the liquid cooling plate 2. Using the adhesive layer 6 for bonding can simplify the bonding process of the liquid cooling plate 2 and the plate member 3 and reduce the connection difficulty between the plate member 3 and the liquid cooling plate 2. Further, a groove 31 is arranged on the side of the plate member 3 facing the liquid cooling plate 2. At this time, the groove 31 can provide a larger glue accommodating space for the adhesive layer 6, so as to increase the thickness of the adhesive layer 6 and improve the bonding effect between the plate member 3 and the liquid cooling plate 2.

[0048] It should be noted that the adhesive layer 6 in the embodiments of the present application can be an adhesive layer 6 with adhesiveness such as structural adhesive. The plate member 3 can be an integrally formed structure, specifically integrally injection molded, so that the groove 31 structure can be directly formed.

[0049] As Figure 9 shown, in some embodiments, the plate member 3 has a plurality of grooves 31, and the plurality of grooves 31 are arranged in an array on the side of the plate member 3 facing the liquid cooling plate 2; the battery pack includes a plurality of adhesive layers 6, and each adhesive layer 6 is accommodated in one groove 31.

[0050] In the embodiments of the present application, by providing a plurality of grooves 31, the adhesive layer 6 can be accommodated in regions, so as to achieve a more uniform distribution of the adhesive layer 6, thereby further ensuring the bonding area of the adhesive layer 6 and improving the bonding stability between the liquid cooling plate 2 and the plate member 3.

[0051] Please refer to Figure 8 and Figure 11 , in some embodiments, the battery pack has a third direction Z intersecting the first direction X and the second direction Y respectively; the plate member 3 has a through hole 32, the through hole 32 penetrates the plate member 3 along the third direction Z, the through hole 32 is arranged on the side of the groove 31 away from the liquid cooling plate 2, and a part of the flexible fixing member 5 is inserted through the through hole 32, and the flexible fixing member 5 is arranged around the conductive structure 4.

[0052] In the embodiments of the present application, the flexible fixing member 5 can be a flexible tie. By providing the through hole 32 on the plate member 3, at this time the flexible fixing member 5 can pass through the through hole 32, and after both ends go around the conductive structure 4, they are tied and fixed. The setting of this structure can realize the split setting of the plate member 3 and the flexible fixing member 5. At this time, the two can be detachably connected, so it is more convenient for each to prepare materials for production, and different flexible fixing members 5 can be replaced according to actual use requirements, so as to achieve a better fixing effect on the conductive structure 4.

[0053] Please refer to Figures 6-11 , in some embodiments, the plate member 3 includes a body 33 and a convex portion 34; the groove 31 is arranged on the side of the body 33 facing the liquid cooling plate 2, the adhesive layer 6 is accommodated in the groove 31, and the adhesive layer 6 is connected to the body 33 and the liquid cooling plate 2 respectively; the convex portion 34 is arranged on the side of the body 33 away from the liquid cooling plate 2, and the convex portion 34 is connected to the body 33; the through hole 32 is arranged on the convex portion 34, and the through hole 32 penetrates the convex portion 34 along the third direction Z.

[0054] In the embodiments of the present application, by setting the plate body as the body 33 and the convex portion 34, and arranging the convex portion 34 on the side of the body 33 facing away from the liquid cooling plate 2, and at the same time the through hole 32 penetrates the convex portion 34, at this time, the convex portion 34 is used to provide a formation position for the through hole 32. Compared with the through hole 32 directly penetrating the entire plate body, the material consumption of the plate body can be effectively reduced, and further the overall weight of the plate body can be reduced, which is beneficial to realizing the lightweight of the battery pack.

[0055] It should be noted that the dimension of the convex portion 34 along the third direction Z can be as narrow as possible. The corresponding material consumption of the convex portion 34 is less, and at the same time, the occupation of the length dimension of the flexible fixing member 5 can be reduced, and further, the flexible fixing member 5 and the conductive structure 4 can be supported to have a larger contact area, so as to achieve a better fixing effect on the conductive structure 4.

[0056] Please refer to Figure 8 , Figure 10 andFigure 11 , in some embodiments, the plate member 3 includes a plurality of convex portions 34, the plurality of convex portions 34 are all connected to the main body 33, and the plurality of convex portions 34 are arranged at intervals along the third direction Z; the plate member 3 includes a plurality of through holes 32, each through hole 32 is arranged in one convex portion 34, and each through hole 32 penetrates one convex portion 34 along the third direction Z; the battery pack includes a plurality of flexible fixing members 5, and each flexible fixing member 5 passes through one through hole 32.

[0057] In the embodiments of the present application, there may be a plurality of through holes 32 corresponding to the plurality of convex portions 34, and correspondingly, a plurality of fixing points can be provided, so that a plurality of flexible fixing members 5 can be fixed. At this time, a plurality of conductive structures 4 can be fixed separately, so that the fixing effect can be further improved. At the same time, the contact and wear between adjacent conductive structures 4 can be reduced, and the safety of the internal circuit of the battery pack can be ensured.

[0058] As Figure 10 shown, in some embodiments, along the third direction Z, the central axes 321 of two adjacent through holes 32 do not coincide.

[0059] In the embodiments of the present application, the central axes 321 of two adjacent through holes 32 do not coincide. At this time, the two adjacent through holes 32 are arranged in a staggered manner. Further, the two adjacent convex portions 34 may be arranged in a staggered manner. In this way, when the flexible fixing members 5 are respectively passed through the through holes 32 on the two adjacent convex portions 34, the flexible fixing members 5 can be prevented from interfering with each other, so that the occupation of more surrounding space can be further avoided.

[0060] As Figure 11 shown, in some embodiments, the convex portion 34 includes a first transition section 341, a positioning section and a second transition section 343. The first transition section 341 is connected to the main body 33, the positioning section is connected to the end of the first transition section 341 away from the main body 33, the second transition section 343 is connected to the end of the positioning section away from the first transition section 341, and the end of the second transition section 343 away from the main body 33 is connected to the main body 33; wherein, the first transition section 341, the positioning section, the second transition section 343 and the main body 33 enclose the through hole 32.

[0061] In the embodiments of the present application, by dividing the convex portion 34 into three sections and cooperating with the main body 33 to enclose the through hole 32, compared with directly using the convex portion 34 to enclose the through hole 32, the occupation of the size of the convex portion 34 in the second direction Y can be further reduced, so as to further reduce the occupation of space by the plate member 3 along the second direction Y, and further improve the space utilization rate.

[0062] It should be noted that in the embodiments of the present application, one end of the first transition section 341 and the second transition section 343 away from the main body 33 inclines towards each other, so that a smooth transition at the connection between the first transition section 341 and the second transition section 343 and the positioning section can be achieved. Furthermore, when the positioning section is pulled by the flexible fixing member 5, the stress between the positioning section and the first transition section 341 and the second transition section 343 can be reduced, thereby improving the structural strength.

[0063] It should also be noted that the positioning section can be a straight section parallel to the main body 33. At this time, when the flexible fixing member 5 is inserted into the through hole 32, the flexible fixing member 5 can have a larger contact area with the positioning section, so that the relative sliding wear between the flexible fixing member 5 and the positioning member can be reduced, and further the service life of the plate member 3 can be improved.

[0064] Please refer to Figures 3-5 , in some embodiments, the battery pack includes a plurality of plate members 3, and the plurality of plate members 3 are arranged at intervals along the first direction X.

[0065] In the embodiments of the present application, by providing a plurality of plate members 3, correspondingly, a plurality of fixing points can be provided in the first direction X, and correspondingly, there can be a plurality of flexible fixing members 5. The plurality of flexible fixing members 5 are arranged corresponding to the plurality of plate members 3, thereby extremely improving the fixing effect on the conductive structure 4 and enhancing the stability of the internal structure of the battery pack.

[0066] It should be noted that the plurality of fixing members can flexibly adjust the fixing positions according to the actual wiring requirements, so as to be applicable to various application scenarios and improve the adaptability.

[0067] Correspondingly, an electrical device according to an embodiment of the present application includes the battery pack as described in any one of the foregoing embodiments.

[0068] In the embodiments of the present application, the electrical device includes the foregoing battery pack, and the foregoing battery pack is used to supply power to the electrical device. Therefore, the electrical device includes all the technical features and technical effects of the foregoing battery pack, which will not be elaborated herein.

[0069] Of course, the electrical device referred to in this application can be application devices such as vehicles, mobile phones, portable devices, laptop computers, ships, spacecraft, electric toys, and electric tools. The vehicle can be a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle, an extended-range electric vehicle, etc.; the spacecraft includes airplanes, rockets, space shuttles, and spaceships, etc.; the electric toys include stationary or mobile electric toys, for example, game consoles, electric vehicle toys, electric ship toys, and electric airplane toys, etc.; the electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, for example, electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact electric drills, concrete vibrators, and electric planers, etc. The embodiments of this application do not impose special restrictions on the above-mentioned electrical devices.

[0070] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0071] The above has introduced in detail a battery pack and an electrical device provided by the embodiments of this application, and specific examples have been used to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only used to help understand the technical solution and its core idea of this application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery pack, characterized in that: Having an intersecting first direction and a second direction, comprising: A battery pack, comprising a plurality of battery cells arranged along the first direction; a liquid cooling plate, arranged on one side of the battery pack along the second direction and connected to the battery cell; A plate member connected to a side of the liquid cooling plate away from the battery pack; A conductive structure, conductively connected to the battery pack; a portion of the conductive structure is disposed on a side of the plate away from the liquid cooling plate; The flexible fixing member is connected to the plate member and the conductive structure respectively.

2. The battery pack according to claim 1, characterized in that: The plate has a groove, and the groove is arranged on a side of the plate facing the liquid cooling plate; The battery pack includes a glue layer, which is accommodated in the groove and is respectively connected to the liquid cooling plate and the plate member.

3. The battery pack according to claim 2, characterized in that: The plate has a plurality of grooves, and the plurality of grooves are arranged in an array on a side of the plate facing the liquid cooling plate; The battery pack includes a plurality of the adhesive layers, and each of the adhesive layers is accommodated in one of the grooves.

4. The battery pack according to claim 2, characterized in that: The battery pack has a third direction intersecting with the first direction and the second direction respectively; the plate has a through hole, and the through hole penetrates the plate along the third direction. The through hole is arranged on a side of the groove away from the liquid cooling plate, and a part of the flexible fixing member is passed through the through hole, and the flexible fixing member is arranged around the conductive structure.

5. The battery pack according to claim 4, characterized in that: The plate comprises: A body, wherein the groove is arranged on a side of the body facing the liquid cooling plate, the adhesive layer is accommodated in the groove, and the adhesive layer is respectively connected to the body and the liquid cooling plate; The convex portion is arranged on a side of the main body away from the liquid cooling plate, and the convex portion is connected to the main body; the through hole is arranged on the convex portion, and the through hole penetrates the convex portion along the third direction.

6. The battery pack according to claim 5, characterized in that: The plate comprises a plurality of protrusions, the plurality of protrusions are connected to the body, and the plurality of protrusions are arranged at intervals along the third direction; The plate comprises a plurality of through holes, each of which is disposed in one of the convex parts, and each of which penetrates one of the convex parts along the third direction; The battery pack includes a plurality of the flexible fixing members, and each of the flexible fixing members is passed through one of the through holes.

7. The battery pack according to claim 6, characterized in that: Along the third direction, central axes of two adjacent through holes do not overlap.

8. The battery pack according to claim 6, characterized in that: The convex portion comprises: A first transition section connected to the main body; A positioning section connected to an end of the first transition section away from the main body; A second transition section is connected to an end of the positioning section away from the first transition section, and an end of the second transition section close to the body is connected to the body; Wherein, the first transition section, the positioning section, the second transition section and the main body form the through hole.

9. The battery pack according to claim 1, characterized in that: The battery pack includes a plurality of the plates, and the plurality of the plates are spaced apart along the first direction.

10. An electrical device, characterized in that: Comprising a battery pack as described in any one of claims 1-9.

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