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, and the battery pack comprises a box body, a battery pack and at least two first protection plates; the box body is provided with a containing cavity, the battery pack is arranged in the containing cavity and comprises a plurality of batteries arranged in the first direction, and the two first protection plates are oppositely arranged on the two sides of the battery pack in the second direction and connected with the battery pack; the first protection plate is provided with a plurality of protrusions facing the battery pack, the protrusions are arranged at intervals in the first direction and connected with the battery pack, a first groove is formed between every two adjacent protrusions, and the first grooves are opposite to the batteries. According to the battery pack, the first protection plate is arranged, the bulge and the first groove are matched with the battery, and the first groove provides an expansion space for the battery and provides expansion buffer when the battery is subjected to thermal runaway expansion, so that the safety of the battery pack is effectively improved.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and specifically relates to a battery pack and an electrical device. Background Art

[0002] As battery packs develop towards high integration and high energy density, they will inevitably compress some of the space originally used to set up safety protection components. This means that when thermal runaway occurs inside the battery pack, there is no mechanical structure inside the battery pack to absorb the expansion of the battery shell, resulting in reduced safety. Utility Model Content

[0003] Purpose of the utility model: An embodiment of the present application provides a battery pack, aiming to solve the problem that the existing battery pack has no mechanical structure inside to absorb the expansion of the battery shell; another purpose of the embodiment of the present application is to provide an electrical device.

[0004] Technical solution: A battery pack according to an embodiment of the present application, wherein the battery pack has a first direction and a second direction intersecting each other, comprising:

[0005] A box body, wherein the box body has a containing cavity;

[0006] A battery pack, the battery pack being arranged in the accommodating cavity; the battery pack comprising a plurality of batteries arranged along the first direction;

[0007] At least two first protective plates, wherein two of the first protective plates are arranged on both sides of the battery pack relatively to each other along the second direction and are connected to the battery pack; the first protective plate is provided with a plurality of protrusions facing the battery pack, the plurality of protrusions are arranged at intervals along the first direction and are connected to the battery pack, a first groove is formed between two adjacent protrusions, and the first groove is opposite to the battery.

[0008] In some embodiments, the battery has a relative first side along the second direction, the first side faces the first protective plate, and a plurality of the protrusions are arranged at intervals along the first direction, and the protrusions are partially fitted with the first side of one of the batteries, or the protrusions are partially fitted with the first side of two adjacent batteries.

[0009] In some embodiments, the first protective plate includes a body extending along the first direction, a plurality of the protrusions are disposed on a side of the body facing the battery pack and connected to the body, and two adjacent protrusions and the body enclose the first groove.

[0010] In some embodiments, the first protective plate includes a plurality of bodies extending along the first direction, two adjacent bodies are relatively arranged on both sides of a protrusion along the first direction and connected to the protrusion, and two adjacent protrusions and one body enclose the first groove.

[0011] In some embodiments, a plurality of the battery packs are included, and the plurality of the battery packs are disposed in the accommodating cavity and arranged at intervals along the second direction, two first protective plates are disposed between two adjacent battery groups, and each first protective plate is connected to the battery group adjacent to it; the bodies of the two first protective plates between two adjacent battery groups are at least partially fitted.

[0012] In some embodiments, the first protective plate has a second groove on a side facing away from the battery, and the second grooves of two first protective plates between two adjacent battery packs face each other and enclose a cavity, and the cavity is used to accommodate a cooling pipe.

[0013] In some embodiments, a second protective plate is also included, the battery also has a second side surface opposite to the first direction, the first side surface intersects with the second side surface, the second protective plate faces the second side surface and is connected to the battery, and the second protective plate is connected to the two first protective plates on both sides of the battery.

[0014] In some embodiments, the second protective plate has a window, the window penetrates the second protective plate along the first direction, and the second side covers the window.

[0015] In some embodiments, the battery pack further includes a fixing platform, which is disposed in the accommodating cavity and connected to the box body; the fixing platform is located on a side of the second protective plate away from the battery and is connected to the second protective plate.

[0016] In some embodiments, the second protection plate comprises:

[0017] a plate body, the plate body being connected to the second side surface, and the window penetrating the plate body;

[0018] At least two first limit members, at least two of which are arranged on both sides of the window relatively along the second direction; the fixed platform is arranged between two adjacent first limit members and connected to the first limit members, and the first limit member is connected to the first protective plate on one side away from the fixed platform.

[0019] In some embodiments,

[0020] The box body comprises a bottom plate, the bottom plate is used to enclose the accommodating cavity, and the fixing platform is connected to the bottom plate;

[0021] The second protection plate further includes a second stopper, which is disposed on a side of the window away from the bottom plate and connected to the plate body, and is connected to the fixing platform on a side facing the bottom plate.

[0022] In some embodiments, the second protection plate further includes a boss, the boss is disposed on a side of the fixing platform away from the bottom plate and is spaced apart from the fixing platform, and the boss is connected to a side of the plate body away from the battery.

[0023] In some embodiments, the second protective plate further includes a flange structure, the flange structure is located on a side of the boss away from the second limiting member, and the flange structure is connected to a side of the plate body away from the battery.

[0024] Accordingly, an electric device described in an embodiment of the present application includes a battery pack described in any one of the aforementioned embodiments, and the battery pack is used to supply power to the electric device.

[0025] Beneficial effects: Compared with the prior art, a battery pack according to an embodiment of the present application has a first direction and a second direction intersecting each other, and the battery pack includes a box, a battery pack, and at least two first protective plates; the box has a receiving cavity, the battery pack is arranged in the receiving cavity, the battery pack includes a plurality of batteries arranged along the first direction, wherein two first protective plates are arranged on both sides of the battery pack in a relative manner along the second direction and connected to the battery pack; the first protective plate is provided with a plurality of protrusions facing the battery pack, the plurality of protrusions are arranged at intervals along the first direction and connected to the battery pack, a first groove is formed between two adjacent protrusions, and the first groove is opposite to the battery. The present application provides a first protective plate, utilizes the protrusions and the first groove to cooperate with the battery, and the first groove provides expansion space for the battery, and provides expansion buffer when the battery expands due to thermal runaway, thereby effectively improving the safety of the battery pack.

[0026] Compared with the prior art, an electric device in an embodiment of the present application includes a battery pack as described in any one of the above embodiments, and the battery pack is used to power the electric device. It is understandable that the electric device can have all the technical features and corresponding beneficial effects of the above battery pack, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1is a schematic diagram of the overall structure of a battery pack according to an embodiment of the present application;

[0029] Figure 2 is a top view of a battery pack without a cover plate according to an embodiment of the present application;

[0030] Figure 3 is an exploded view of a battery pack according to an embodiment of the present application;

[0031] Figure 4 is an enlarged view of a local structure of a battery pack according to an embodiment of the present application;

[0032] Figure 5 is a schematic structural diagram of a first protective plate in an embodiment of the present application;

[0033] Figure 6 is a schematic structural diagram of a second protective plate in an embodiment of the present application;

[0034] Figure 7 is a schematic structural diagram of the second protective plate of an embodiment of the present application from another perspective;

[0035] Figure 8 It is a cross-sectional view of a battery pack along the second direction according to an embodiment of the present application.

[0036] Reference numerals:

[0037] 1. Box body; 11. Accommodating cavity; 12. Bottom plate; 2. Battery pack; 21. Battery; 211. First side; 212. Second side; 3. Fixing platform; 4. Cover plate; 41. Explosion-proof window; 5. First protection plate; 51. Main body; 52. Protrusion; 53. First groove; 54. Second groove; 55. Cavity; 6. Second protection plate; 61. Window; 62. Boss; 63. Flanging structure; 64. Plate body; 65. First stopper; 651. First section; 652. Second section; 66. Second stopper; Y, first direction; X, second direction; Z, height direction. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0039] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "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 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 therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, and at least one means one, two or more, unless otherwise clearly and specifically defined. In the description of this application, "vertical" means completely vertical at 90° or almost completely vertical, for example, an angle within the range of 80° to 100° is considered vertical. Similarly, "parallel" means completely parallel or almost completely parallel, for example, an angle within 10° of completely parallel is considered parallel.

[0040] It should also be noted that in the drawings of the present application, the arrow marked Y indicates the first direction Y, the arrow marked X indicates the second direction X, and the arrow marked Z indicates the height direction Z. In the embodiment of the present application, the first direction Y is the direction in which the multiple batteries 21 are arranged, the second direction X is the direction in which the multiple battery packs 2 are arranged, and the height direction Z is the height direction of the battery 21, that is, the direction in which the bottom plate 12 faces the battery 21; the first direction X and the second direction Y are introduced to facilitate the description of the structural position relationship of the various components of the battery, and thus facilitate the understanding of its structure. In the embodiment of the present application, the first direction X and the second direction Y are preferably perpendicular to each other.

[0041] The applicant noted that with the deployment of the dual-carbon strategy and the development of new energy vehicles, the safety performance and maintainability of battery packs, as key components, have become the focus of attention. At present, the integrated development of battery packs at home and abroad has posed a huge challenge to the safety performance and maintainability of battery packs. Highly integrated, high-energy-density battery packs will inevitably compress some of the space originally set up for safety protection components, which means that when thermal safety runaway occurs inside the battery pack, the battery pack cannot be effectively mechanically protected. At the same time, high integration also brings difficulties to maintenance, which increases maintenance costs.

[0042] In view of this, the present application provides a battery pack, aiming to solve the above-mentioned problem that the battery cannot obtain mechanical protection against outward expansion due to thermal runaway.

[0043] like Figure 1-Figure 8As shown, a battery pack of an embodiment of the present application has a first direction Y and a second direction X that intersect, preferably the first direction Y and the second direction X are perpendicular, the battery pack includes a box body 1, a battery pack 2 and at least two first protective plates 5; the box body 1 has a accommodating cavity 11, the battery pack 2 is arranged in the accommodating cavity 11, the battery pack 2 includes a plurality of batteries 21 arranged along the first direction Y, wherein the two first protective plates 5 are relatively arranged on both sides of the battery pack 2 along the second direction X and connected to the battery pack 2; the first protective plate 5 is provided with a plurality of protrusions 52 facing the battery pack 2, the plurality of protrusions 52 are arranged at intervals and connected to the battery pack 2, a first groove 53 is formed between two adjacent protrusions 52, and the first groove 53 is opposite to the battery 21.

[0044] In the embodiment of the present application, a plurality of batteries 21 are arranged along the first direction Y to form a battery pack 2, and two first protective plates 5 are arranged oppositely on both sides of the battery pack 2, and the protrusions 52 of the first protective plate 5 are connected to the battery 21, and the first grooves 53 between the two adjacent protrusions 52 are opposite to the side of the battery 21. The present application uses the protrusions 52 to support, fix and position the battery 21, and uses the battery 21 to be opposite to the first grooves 53, so that when the battery 21 expands due to thermal runaway caused by overcharging, the part of the shell of the battery 21 opposite to the first groove 53 can expand into the first groove 53, and the first groove 53 is used to provide expansion space for the battery 21, so as to avoid the flat fixing plate directly connected and fixed to the battery pack 2. The plate-shaped fixing plate is prevented from squeezing the side of the battery 21, so that the battery 21 cannot expand to the side and can only explode outward through the explosion-proof valve, thereby increasing the difficulty of maintenance. Therefore, the present application utilizes the protrusion 52 of the first protective plate 5 not only to achieve support and fixation of each battery 21 in the battery pack 2, but also utilizes the first groove 53 to provide expansion space for the battery 21 when thermal runaway occurs, thereby reducing the risk of explosion of the battery 21, improving the safety of the battery 21, and reducing the difficulty of maintenance when the battery 21 thermally runs away.

[0045] It should be noted that, in this embodiment, the first protective plate 5 can be arranged on two opposite sides of the battery pack 2 along the first direction Y. At this time, the first protective plate 5 is used to provide expansion space for the large surface of the battery 21, that is, the second side surface 212. The protrusion 52 is fitted with the second side surface 212 to support and fix the battery 21, and the first groove 53 provides expansion space for the second side surface 212. The first protective plate 5 can also be arranged on two sides of the battery pack 2 that are opposite to each other along the second direction X. In this case, the first protective plate 5 is used to provide expansion space for the first side surface 211 of the battery 21; wherein, the protrusion 52 can be fitted with the first side surface 211, and the first groove 53 can provide expansion space for the portion of the first side surface 211 that is not fitted with the protrusion 52; a protrusion 52 can be fitted with the first side surface 211 of a battery 21, in which case the first groove 53 is opposite to the portion of the first side surfaces 211 of two adjacent batteries 21, thus providing expansion space for the first side surfaces 211 of the two batteries 21; or a protrusion 52 can be fitted with the first side surfaces 211 of two adjacent batteries 21, in which case the first groove 53 between the two adjacent protrusions 52 is opposite to the first side surface 211 of a battery 21, thus providing expansion space for the first side surfaces 211 of the two batteries 21. Of course, at this time, the extension direction of the protrusion 52 and the first groove 53 is the same as the height direction Z of the battery 21.

[0046] It should also be noted that when the first protective plate 5 is connected to the second side 212 of the battery 21, the protrusion 52 and the first groove 53 can also extend along the second direction X. At this time, the protrusion 52 is arranged at intervals along the height direction Z of the battery 21. At this time, the first groove 53 can also provide expansion space for the second side 212. When the first protective plate 5 is connected to the first side 211 of the battery 21, the protrusion 52 and the first groove 53 can also extend along the first direction Y. At this time, the protrusion 52 is connected to multiple batteries 21 arranged along the first direction Y, and the first groove 53 is opposite to multiple batteries 21 arranged along the first direction Y, which is used to provide expansion space for the first side 211 of multiple batteries 21.

[0047] In some embodiments, the battery 21 has a relative first side 211 along the second direction X, the first side 211 faces the first protective plate 5, and multiple protrusions 52 are arranged at intervals along the first direction Y. The protrusions 52 are partially fitted with the first side 211 of one battery 21, or the protrusions 52 are partially fitted with the first side 211 of two adjacent batteries 21.

[0048] In this embodiment, the first protective plate 5 is relatively arranged on both sides of the battery pack 2 along the second direction X, and partially fits with the first side surface 211. Specifically, the protrusions 52 and the first grooves 53 are arranged at intervals along the first direction Y, and the extending directions of the protrusions 52 and the first grooves 53 are perpendicular to the arrangement direction of the batteries 21. In this embodiment, each protrusion 52 can be partially fitted with the first side surface 211 of a battery 21. At this time, the protrusions 52 of the relatively arranged first protective plate 5 are opposite to the first side surfaces 211 on both sides of the battery 21 and fit with the first side surfaces 211 to achieve the fixation of the battery 21. The part of the first side surface 211 that is not fitted with the protrusions 52 is opposite to the first grooves 53, and expands and deforms during thermal runaway. The protrusion 52 can also fit with the part of the first side surface 211 of two adjacent batteries 21 at the same time. At this time, the protrusion 52 of the first protective plate 5 arranged oppositely is connected with the two adjacent batteries 21 to fix the two batteries 21. The part of the first side surface 211 not fitting with the protrusion 52 is opposite to the first groove 53 and expands and deforms during thermal runaway. At this time, since the protrusion 52 is only connected to the edge of the first side surface 211, the middle part of the first side surface 211 is opposite to the first groove 53 for expansion. Since the middle part of the first side surface 211 corresponds to the inner cavity of the battery 21, and the first side surface 211 has no other bending or reinforcement structure in this area, it is more conducive to expansion deformation, and a better expansion and pressure reduction effect can be achieved at this time, thereby ensuring a better effect of improving safety.

[0049] In some embodiments, the first protective plate 5 includes a main body 51 extending along a first direction Y, a plurality of protrusions 52 are arranged on a side of the main body 51 facing the battery pack 2 and connected to the main body 51 , and two adjacent protrusions 52 and the main body 51 enclose a first groove 53 .

[0050] It should be noted that, in this embodiment, the body 51 is a flat plate, and a plurality of protrusions 52 are arranged at intervals along the first direction Y on the side of the body 51 facing the battery pack 2, and two adjacent protrusions 52 are connected to the body 51 and surround a first groove 53. In this case, the first protective plate can be a flat profile, and a plurality of protrusions are milled one by one on the side facing the battery pack, or it can be integrally injection molded, or a plurality of protrusions are welded and connected to the body, and the whole is easy to shape and convenient for production.

[0051] In some embodiments, the first protective plate 5 includes a plurality of main bodies 51 extending along the first direction Y, two adjacent main bodies 51 are relatively arranged on both sides of a protrusion 52 along the first direction Y and connected to the protrusion 52, and two adjacent protrusions 52 and the main body 51 enclose a first groove 53.

[0052] It should be noted that, in the present embodiment, there are a plurality of bodies 51 and a plurality of protrusions 52, which are arranged alternately and spaced in sequence along the first direction. In this structure, each body 51 and the two protrusions 52 connected thereto together enclose a first groove 53. The plurality of bodies 51 and the plurality of protrusions 52 can form a variety of structures. For example, the body 51 may be connected to the side opposite to the protrusion 52 along the first direction Y, and the side of the body 51 facing away from the battery pack 2 is coplanar with the side of the protrusion 52 facing away from the battery pack 2; or, the body 51 is connected to the side of the protrusion 52 facing away from the battery pack 2, in which case the two bodies 51 connected to one protrusion 52 can be connected or spaced. If the two bodies 51 are spaced apart, the two bodies 51 and the protrusion 52 can enclose a second groove 54.

[0053] Please refer to Figure 3 and Figure 4 As shown, in some embodiments, a plurality of battery packs 2 are included, the plurality of battery packs 2 are disposed in the accommodating cavity 11 and are arranged at intervals along the second direction X, two first protective plates 5 are disposed between two adjacent battery packs 2, and each first protective plate 5 is connected to the battery pack 2 adjacent thereto; the main bodies 51 of the two first protective plates 5 between two adjacent battery packs 2 are at least partially fitted.

[0054] In this embodiment, each battery pack 2 is provided with a first protective plate 5 on both sides opposite to each other along the second direction X. At this time, the first protective plate 5 is connected to the battery pack 2, so that two first protective plates 5 are provided between two adjacent battery packs 2, and the two first protective plates 5 are adjacent. In order to save the internal space of the battery pack, the two adjacent first protective plates 5 are connected, which can reduce the occupation of the internal space of the battery pack. At the same time, the opposite side of the two first protective plates 5 can be completely fitted or partially fitted, that is, there is a concave-convex structure on the opposite side of the two first protective plates 5, so that space can be provided for providing buffering energy absorption or for use with a common liquid cooling component to liquid cool the side of the battery 21.

[0055] like Figure 4 As shown, in some embodiments, the first protective plate 5 has a second groove 54 on the side facing away from the battery 21, and the second groove 54 is recessed along the second direction X-direction protrusion 52. The second grooves 54 of the two first protective plates 5 between two adjacent battery packs 2 are opposite and enclosed to form a cavity 55, and the cavity 55 is used to accommodate the cooling pipe.

[0056] In the embodiment of the present application, the second groove 54 is arranged on the side of the first protective plate 5 away from the battery 21 and at a position opposite to the protrusion 52. At this time, the second groove 54 also forms a concave-convex structure on the side of the first protective plate 5 away from the battery 21. In this way, on the one hand, the flatness of the large surface of the first protective plate 5 is not affected, and the second groove 54 is only sunken into the protrusion 52, which reduces the weight of the first protective plate 5, thereby reducing the weight of the entire battery pack and improving the energy density of the battery 21; on the other hand, the second grooves 54 of two adjacent first protective plates 5 will be partially attached to realize the splicing of the two opposite second grooves 54 to form a cavity 55. At this time, the cavity 55 can be used to accommodate the cooling pipe to perform heat exchange cooling on the adjacent batteries 21.

[0057] Please refer to Figure 1-Figure 4 , Figure 6-Figure 7 In some embodiments, a second protective plate 6 is further included, and the battery 21 also has a second side surface 212 opposite to the first direction Y, the first side surface 211 intersects with the second side surface 212, the second protective plate 6 faces the second side surface 212 and is connected to the battery 21, and the second protective plate 6 is connected to the two first protective plates 5 on both sides of the battery 21.

[0058] In the embodiment of the present application, the second protective plate 6 positions and fixes the battery pack 2 from both sides in the first direction Y. Thus, the battery pack 2 is enclosed by two second protective plates 6 arranged opposite to each other in the first direction Y and the first protective plates 5 arranged opposite to each other in the second direction X, and the battery pack 2 is fixed, so that the batteries 21 of the battery pack 2 are stably fixed.

[0059] like Figure 6 and Figure 7 As shown, in some embodiments, the second protective plate 6 has a window 61 , the window 61 penetrates the second protective plate 6 along the first direction Y, and the second side surface 212 covers the window 61 .

[0060] In the embodiment of the present application, the second protective plate 6 is connected to the second side surface 212, and is used to support and fix the second side surface 212 of the battery 21; in addition, by providing the window 61, it is possible to provide expansion space for the second side surface 212, so that when the battery 21 has thermal runaway, the second side surface 212 can be used to expand and deform into the window 61 to reduce the pressure inside the battery 21, and prevent the battery 21 from exploding when the thermal runaway is not serious. Therefore, the embodiment of the present application, combined with the first groove 53 of the first protective plate 5 and the window 61 of the second protective plate 6, can provide expansion space for the battery pack 2 from all sides of the battery pack 2, thereby effectively improving the safety of the battery pack.

[0061] Please refer to Figure 1 , Figure 2 , Figure 4 and Figure 8 In some embodiments, the battery pack further includes a fixing platform 3, which is disposed in the accommodating cavity 11 and connected to the box body 1; the fixing platform 3 is located on a side of the second protective plate 6 away from the battery 21 and is connected to the second protective plate 6.

[0062] In the embodiment of the present application, the fixing platform 3 is arranged in the accommodating cavity 11 of the box body 1 and connected to the box body 1. There are at least two fixing platforms 3, wherein the two fixing platforms 3 are arranged opposite to each other along the first direction Y, the battery pack 2 is arranged between the two opposite fixing platforms 3, and the fixing platform 3 is arranged on the side of the second protective plate 6 away from the battery 21. According to the number of battery packs 2 in the battery pack, multiple groups of two oppositely arranged fixing platforms 3 can be set, and the multiple groups of two oppositely arranged fixing platforms 3 are arranged at intervals along the second direction X, and at this time, two adjacent first protective plates 5 are located between two adjacent fixing platforms 3.

[0063] It should be noted that, in the embodiment of the present application, by setting the fixing platform 3 on both sides of the battery pack 2 along the first direction Y, the fixing platform 3 can be used to fix the battery pack 2, and the second protective plate 6 can be fixed on the fixing platform 3. At this time, the two first protective plates 5 arranged opposite to each other are located on both sides of the fixing platform 3 along the second direction X, and the second protective plate 6 and the battery pack 2 are located between the two fixing platforms 3 arranged opposite to each other along the first direction Y, so that the battery pack 2 can be limited and fixed on both sides of the first direction Y and the second direction X, and the battery pack 2 can be fixed in the battery pack.

[0064] like Figure 3 , Figure 6 and Figure 7 As shown, in some embodiments, the second protective plate 6 includes a plate body 64 and at least two first limiting members 65, the plate body 64 is connected to the second side surface 212, and the window 61 passes through the plate body 64; at least two first limiting members 65 are relatively arranged on both sides of the window 61 along the second direction X; the fixing platform 3 is arranged between two adjacent first limiting members 65 and connected to the first limiting member 65, and the first limiting member 65 is connected to the first protective plate 5 on the side facing away from the fixing platform 3.

[0065] In the embodiment of the present application, the second protective plate 6 is connected to the second side 212 of the battery 21 using the plate body 64, the window 61 provides expansion space for the second side 212, the first limit member 65 is arranged on both sides of the window 61 and is located on two opposite sides of the fixing platform 3 along the second direction X and the first limit member 65 is connected to the fixing platform 3, so as to realize the fixation of the battery pack 2 in the box body 1.

[0066] It should be noted that, in the embodiment of the present application, the first position-limiting member 65 includes a first section 651 and a second section 652; the first section 651 is connected to the plate body 64 and is opposite to the fixing platform 3 along the second direction X, and the first section 651 is connected to the first protective plate 5; the second section 652 is connected to the first section 651 and is bent relative to the first section 651, the second section 652 is connected to the plate body 64, and the second section 652 is arranged on the side of the fixing platform 3 away from the bottom plate 12 and is connected to the fixing platform 3. Therefore, the two first position-limiting members 65 are arranged on both sides of the fixing platform 3 along the second direction X by using the first section 651 to achieve the position limiting of the battery pack 2 in the second direction X; the two first position-limiting members 65 are connected to the side of the fixing platform 3 away from the bottom plate 12 by using the second section 652 to achieve the position limiting of the battery pack 2 in the height direction Z of the battery 21. The two fixing platforms 3 arranged opposite to each other along the first direction Y achieve the position limiting of the battery pack 2 in the first direction Y.

[0067] It should also be noted that, since the battery pack 2 of the embodiment of the present application is first surrounded by the first protective plate 5 and the second protective plate 6 to form a frame fixed around the battery pack 2, the battery pack 2 is grouped, and then the battery pack 2 can be placed in the accommodating cavity 11 or taken out of the accommodating cavity 11. When the second section 652 is not fixedly connected to the fixing platform 3, the battery pack 2 can support the battery pack 2 in the height direction Z by using the cooperation between the fixing platform 3 and the second section 652.

[0068] It should also be noted that the connection between the second section 652 and the fixing platform 3 can be fixed by gluing or by bolt locking.

[0069] Please refer to Figure 6-Figure 8 In some embodiments, the box body 1 includes a bottom plate 12, which is used to enclose a accommodating cavity 11, and the fixing platform 3 is connected to the bottom plate 12; the second protective plate 6 also includes a second limit member 66, which is arranged on the side of the window 61 away from the bottom plate 12 and connected to the plate body 64, and the second limit member 66 is connected to the fixing platform 3 on the side facing the bottom plate 12.

[0070] In the embodiment of the present application, the second limiting member 66 is provided to further provide a limiting support member between the two first limiting members 65 , thereby improving the structural strength and stability of the connection between the second protection plate 6 and the fixing platform 3 .

[0071] It should be noted that the connection between the second limiting member 66 and the fixing platform 3 can be fixed by gluing or by bolt locking.

[0072] Please refer to Figure 6-Figure 8 In some embodiments, the second protective plate 6 further includes a boss 62 , which is disposed on a side of the fixing platform 3 away from the bottom plate 12 and spaced apart from the fixing platform 3 , and the boss 62 is connected to a side of the plate body 64 away from the battery 21 .

[0073] In the embodiment of the present application, since the first protective plate 5 and the second protective plate 6 enclose and fix the battery pack 2 to form an integral structure, the battery pack 2 needs to be lifted when being taken out and placed in the accommodating cavity 11 of the box body 1. Therefore, a boss 62 is provided to provide a fixing ear to facilitate the taking out and placing of the battery pack 2.

[0074] Please refer to Figure 6-Figure 8 In some embodiments, the second protective plate 6 further includes a flange structure 63 , which is located on a side of the boss 62 away from the second limiting member 66 , and is connected to a side of the plate body 64 away from the battery 21 .

[0075] It should be noted that, since the second protective plate 6 is usually a profile plate, the boss 62 and the second stopper 66 are arranged behind the window 61, and both are bent and extended from the edge of the window 61 to the side away from the battery 21. At this time, it is equivalent to providing an arc-shaped transition of the edge of the window 61, which can avoid puncturing the outer shell of the battery 21. When there is a gap between the boss 62 and the frame of the adjacent window 61 along the second direction X, the boss 62 will cause a sharp corner to appear on the edge of the window 61. At this time, the sharp corner is set as a flange structure 63 extending to the side away from the battery 21, which can avoid the sharp corner from causing puncture to the battery 21.

[0076] In some embodiments, the battery pack further includes a cover plate 4 , which is connected to the box body 1 and seals the accommodating cavity 11 ; the cover plate 4 includes an explosion-proof window 41 , which is opposite to the battery pack 2 .

[0077] In the embodiment of the present application, an explosion-proof window 41 is provided on the cover plate 4, which can timely discharge the thermal runaway gas in the battery pack accommodating cavity 11 when the battery pack thermally runs away, thereby avoiding the explosion of the battery 21.

[0078] Correspondingly, an electric device according to an embodiment of the present application comprises the battery pack of any one of the aforementioned embodiments, and the battery pack is used to supply power to the electric device.

[0079] It is understandable that the electrical device can have all the technical features and corresponding beneficial effects of the above-mentioned battery pack, which will not be elaborated here.

[0080] Of course, the electrical equipment referred to in this application may include but is not limited to backup power supplies, electrodes, electric vehicles, electric bicycles, electric motorcycles, large batteries, etc.

[0081] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0082] The above is a detailed introduction to a battery pack and an electrical device provided in the embodiments of the present application, and specific examples are used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present application; ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims

1. A battery pack, characterized in that: The battery pack has a first direction and a second direction intersecting each other, and includes: A box body, wherein the box body has a containing cavity; A battery pack, the battery pack being arranged in the accommodating cavity; the battery pack comprising a plurality of batteries arranged along the first direction; At least two first protective plates, wherein two of the first protective plates are arranged on both sides of the battery pack relatively to each other along the second direction and are connected to the battery pack; the first protective plate is provided with a plurality of protrusions facing the battery pack, and the plurality of protrusions are arranged at intervals along the first direction and are connected to the battery pack; a first groove is formed between two adjacent protrusions, and the first groove is opposite to the battery.

2. The battery pack according to claim 1, characterized in that: The battery has a first side surface relative to the second direction, the first side surface faces the first protective plate, and a plurality of protrusions are arranged at intervals along the first direction, and the protrusions are partially fitted with the first side surface of one of the batteries, or the protrusions are partially fitted with the first side surfaces of two adjacent batteries.

3. The battery pack according to claim 1, characterized in that: The first protective plate includes a body extending along the first direction, a plurality of protrusions are arranged on a side of the body facing the battery pack and connected to the body, and two adjacent protrusions and the body enclose the first groove.

4. The battery pack according to claim 1, characterized in that: The first protective plate includes a plurality of bodies extending along the first direction, two adjacent bodies are relatively arranged on both sides of a protrusion along the first direction and connected to the protrusion, and two adjacent protrusions and one body enclose the first groove.

5. The battery pack according to claim 3 or 4, characterized in that: It includes a plurality of the battery packs, which are arranged in the accommodating cavity and spaced apart along the second direction, two first protective plates are arranged between two adjacent battery packs, and each first protective plate is connected to the battery pack adjacent to it; the bodies of the two first protective plates between two adjacent battery packs are at least partially fitted.

6. The battery pack according to claim 5, characterized in that: The first protective plate has a second groove on the side facing away from the battery, and the second groove is recessed toward the protrusion along the second direction. The second grooves of the two first protective plates between two adjacent battery packs are opposite and enclosed to form a cavity, and the cavity is used to accommodate the cooling pipe.

7. The battery pack according to claim 2, characterized in that: It also includes a second protective plate, the battery also has a second side surface opposite to the first direction, the first side surface intersects with the second side surface, the second protective plate faces the second side surface and is connected to the battery, and the second protective plate is connected to the two first protective plates on both sides of the battery.

8. The battery pack according to claim 7, characterized in that: The second protection plate has a window, the window penetrates the second protection plate along the first direction, and the second side covers the window.

9. The battery pack according to claim 8, characterized in that: The battery pack further includes a fixing platform, which is disposed in the accommodating cavity and connected to the box body; the fixing platform is located on a side of the second protection plate away from the battery and connected to the second protection plate.

10. The battery pack according to claim 9, characterized in that: The second protection plate comprises: a plate body, the plate body being connected to the second side surface, and the window penetrating the plate body; At least two first limit members, at least two of which are arranged on both sides of the window relatively along the second direction; the fixed platform is arranged between two adjacent first limit members and connected to the first limit members, and the first limit member is connected to the first protective plate on one side away from the fixed platform.

11. The battery pack according to claim 10, characterized in that: The box body comprises a bottom plate, the bottom plate is used to enclose the accommodating cavity, and the fixing platform is connected to the bottom plate; The second protection plate further includes a second stopper, which is disposed on a side of the window away from the bottom plate and connected to the plate body, and is connected to the fixing platform on a side facing the bottom plate.

12. The battery pack according to claim 11, characterized in that: The second protection plate further includes a boss, which is disposed on a side of the fixing platform away from the bottom plate and spaced apart from the fixing platform, and is connected to a side of the plate body away from the battery.

13. The battery pack according to claim 12, characterized in that: The second protective plate further includes a flange structure, the flange structure is located on a side of the boss away from the second limiting member, and the flange structure is connected to a side of the plate body away from the battery.

14. An electrical device, characterized in that: It comprises a battery pack as described in any one of claims 1 to 13, wherein the battery pack is used to supply power to the electrical device.

Images