Shell, shell assembly, battery device and electric equipment

Abstract

The utility model discloses a shell, a shell assembly, a battery device and electric equipment, a containing space is defined by the shell, the containing space is suitable for containing a battery, the battery comprises a battery cell and a shell, the battery cell is contained in the shell, the shell is suitable for limiting deformation of the shell in a first direction, and the first direction is suitable for being the same as the height direction of the battery. A containing space is defined by the shell, the containing space is suitable for containing the battery, the battery comprises a battery cell and a shell, the battery cell is contained in the shell, the shell is suitable for limiting deformation of the shell in the first direction, and the first direction is suitable for being the same as the height direction of the battery. Therefore, the phenomenon that the electrolyte is sprayed out from the height direction of the battery under the supporting action of the shell is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a shell, a shell component, a battery device and an electrical device. Background Art

[0002] Battery is a common new energy storage device. It converts electrical energy into chemical energy for storage through chemical cells, and converts chemical energy into electrical energy for release when needed. Usually, a heat insulation structure is set between multiple batteries to isolate multiple batteries.

[0003] When the length of the battery is much greater than its height and thickness, when the battery experiences thermal runaway, the electrolyte has a longer path to flow to the explosion-proof valve to spray out and release pressure, and the plate of the battery shell is thinner in the height direction, so the electrolyte is easy to spray out from the height direction of the battery and destroy the battery structure. Utility Model Content

[0004] The utility model aims to provide a shell, a shell assembly, a battery device and an electrical device, which can solve the problem that the electrolyte is easy to spray out from the height direction of the battery when the battery is overheated.

[0005] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0006] In a first aspect, the utility model provides a shell, which encloses a receiving space, the receiving space is suitable for receiving a battery, the battery comprises a battery cell and a shell, the battery cell is received in the shell, the shell is suitable for limiting the deformation of the shell in a first direction, the first direction is suitable to be the same as the height direction of the battery.

[0007] In one embodiment, the outer shell includes a bottom plate, a top plate, a first connecting plate and a second connecting plate, the bottom plate and the top plate are opposite to each other in the first direction, and the first connecting plate and the second connecting plate are spaced apart in the second direction; one end of the first connecting plate in the first direction is connected to the top plate, and the other end is connected to the bottom plate, and one end of the second connecting plate in the first direction is connected to the top plate, and the other end is connected to the bottom plate; the second direction is suitable to be the same as the thickness direction of the battery.

[0008] In one embodiment, the first connecting plate has a first surface and a second surface opposite to each other in the second direction, the second surface faces the second connecting plate, and the first surface is provided with a first accommodating groove recessed toward the second surface.

[0009] In one embodiment, there are a plurality of first accommodating grooves, and the plurality of first accommodating grooves are spaced apart in a third direction, and the third direction is suitable to be the same as the length direction of the battery.

[0010] In one embodiment, the first accommodating groove is a through groove that passes through the first surface and the second surface, and the first accommodating groove connects the first surface and the accommodating space; the first connecting plate forms a plurality of first connecting ribs, and the plurality of first connecting ribs are spaced apart in the third direction.

[0011] In one embodiment, the second connecting plate has a third surface and a fourth surface opposite to each other in the second direction, the fourth surface faces the first connecting plate, and the third surface is provided with a second accommodating groove extending through the fourth surface; the second connecting plate forms a plurality of second connecting ribs, and the plurality of second connecting ribs are spaced apart in the third direction.

[0012] In one embodiment, the first connecting rib and the second connecting rib at least partially overlap in an orthographic projection in the second direction.

[0013] In one embodiment, the first connecting rib and the second connecting rib are arranged at intervals in the orthographic projection in the second direction.

[0014] In one embodiment, the top plate includes a first main body portion, a first bent portion, and a second bent portion, the first bent portion and the second bent portion are respectively connected to the edges of the first main body portion in the second direction, and the first bent portion and the second bent portion are bent toward one side of the bottom plate; the first connecting plate is connected to the first bent portion, and the second connecting plate is connected to the second bent portion.

[0015] In one embodiment, the first main body portion and the first curved portion transition smoothly, and / or the first main body portion and the second curved portion transition smoothly, and / or the first curved portion and the first connecting plate transition smoothly, and / or the second curved portion and the second connection transition smoothly.

[0016] In one embodiment, the thickness of the bottom plate is greater than the thickness of the first connecting plate and the second connecting plate, and / or the thickness of the top plate is greater than the thickness of the first connecting plate and the second connecting plate.

[0017] In one embodiment, the housing is an integrated structure.

[0018] In a second aspect, the utility model further provides a shell assembly, comprising a heat insulating sheet and the shell described in the embodiment of the first aspect, wherein the heat insulating sheet is accommodated in a first receiving groove of the shell, and / or the heat insulating sheet is accommodated in a second receiving groove of the shell.

[0019] In one embodiment, the thickness of the heat insulation sheet in the second direction is A, and the depth of the first receiving groove in the second direction is B, satisfying A≤B.

[0020] In a third aspect, the utility model further provides a battery device, comprising a battery and the shell described in the embodiment of the first aspect, wherein the battery is accommodated in a receiving space of the shell; or, the battery device comprises a battery and the shell assembly described in the embodiment of the second aspect, wherein the battery is accommodated in a receiving space of the shell of the shell assembly.

[0021] In a fourth aspect, the present invention further provides an electrical device, comprising the battery device described in the implementation of the third aspect.

[0022] By setting a shell, the shell encloses a receiving space, and the receiving space is suitable for receiving a battery. The battery includes a battery cell and a shell. The battery cell is received in the shell. The shell is suitable for limiting the deformation of the shell in a first direction, and the first direction is suitable for being the same as the height direction of the battery, so that the battery is not prone to electrolyte spraying out from the height direction of the battery under the support of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 is a layout diagram of a battery device of an embodiment;

[0025] Figure 2 is a plan view of a battery device according to an embodiment;

[0026] Figure 3 is a structural diagram of a housing of an embodiment;

[0027] Figure 4 is a side cross-sectional view of a battery device according to an embodiment.

[0028] Description of reference numerals:

[0029] 1000-battery device;

[0030] 100-housing assembly;

[0031] 10-housing, 11-accommodating space, 12-bottom plate, 121-second main body, 122-third curved portion, 123-fourth curved portion, 13-top plate, 131-first main body, 132-first curved portion, 133-second curved portion, 14-first connecting plate, 141-first surface, 142-second surface, 143-first accommodating groove, 144-first connecting rib, 15-second connecting plate, 151-third surface, 152-fourth surface, 153-second accommodating groove, 154-second connecting rib;

[0032] 20- thermal insulation sheet;

[0033] 200-battery, 201-shell, 2011-first cover plate, 2012-second cover plate, 2013-pole, 2014-sampling point, 2015-explosion-proof valve, 2016-liquid filling port, 202-battery core, 203-sealed space, 204-insulating film;

[0034] 2000-fixed component, 2001-base, 2002-covering plate, 2003-baffle, 2004-installation space;

[0035] X-first direction, Y-second direction, Z-third direction. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0038] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0039] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0040] Please refer to Figure 1 The present invention provides an electrical device (not shown), including an electrical device (not shown) and a battery device 1000 in an embodiment of the present invention, wherein the battery device 1000 is suitable for supplying power to the electrical device. The electrical device may be a vehicle, a household appliance, a commercial appliance, an industrial appliance, etc., without limitation. The battery device 1000 in the embodiment of the present invention realizes the storage of electrical energy and supplies power to the electrical device by converting chemical energy and electrical energy. The battery device 1000 in the embodiment of the present invention may be a power battery 200, a household energy storage battery 200, a commercial energy storage battery 200, an industrial energy storage battery 200, etc., without limitation.

[0041] Optionally, there may be multiple battery devices 1000, and the multiple battery devices 1000 are arranged in sequence along the second direction, and the second direction is suitable to be the same as the thickness direction of the battery device 1000. Optionally, the electrical equipment also includes a fixing assembly 2000, and the fixing assembly 2000 includes a base 2001, a sealing plate 2002 and a baffle 2003. The base 2001 and the sealing plate 2002 are arranged opposite to each other in the height direction of the battery device 1000, and the two ends of the baffle 2003 are respectively connected to the sealing plate 2002 and the base 2001, and the base 2001 is used to connect and fix with a fixed foundation (not shown). Optionally, there may be two baffles 2003, and the two baffles 2003 are arranged opposite to each other in the length direction of the base 2001, and are enclosed with the base 2001 and the sealing plate 2002 to form an installation space 2004, and the battery device 1000 is accommodated in the installation space 2004. Optionally, the fixed foundation can be the ground, the wall, the chassis of the vehicle, etc., without limitation. Optionally, the baffle 2003 and the base 2001 may be an integrated structure, or may be detachably connected by screwing, clamping, riveting, etc., without limitation. Optionally, the connection method between the sealing plate 2002 and the baffle 2003 is similar to the connection method between the baffle 2003 and the base 2001, which can be referred to and will not be repeated.

[0042] The electrical equipment realizes the storage and output of electrical energy through the electrical device and the battery device 1000 in the embodiment of the utility model. At the same time, the electrolyte in the battery device 1000 is not easy to spray out from the height direction of the battery device 1000, thereby preventing the battery device 1000 from being short-circuited due to the damage of the leaked electrolyte.

[0043] Please refer to Figure 2The present invention further provides a battery device 1000, comprising a battery 200 and a housing 10 in an embodiment of the present invention, wherein the battery 200 is accommodated in a receiving space 11 of the housing 10. Alternatively, the battery device 1000 comprises a battery 200 and a housing assembly 100 in an embodiment of the present invention, wherein the battery 200 is accommodated in a receiving space 11 of the housing 10 of the housing assembly 100, and a heat insulating sheet 20 of the housing assembly 100 and the battery 200 are arranged relative to each other in the thickness direction of the battery 200. The heat insulating sheet 20 is suitable for being arranged between two adjacent battery devices 1000, so that when a battery device 1000 has thermal runaway, the high temperature generated by it is not easy to affect the working state of another adjacent battery device 1000. Optionally, the heat insulating sheet 20 can also be arranged between the battery device 1000 and the aforementioned fixing assembly 2000 to prevent the external environment from affecting the working state of the battery device 1000.

[0044] Optional, please refer to Figure 1 and Figure 4 The battery 200 includes a housing 201 and a battery cell 202. The housing 201 encloses a sealed space 203, and the battery cell 202 is accommodated in the sealed space 203. Optionally, the sealed space 203 is filled with an electrolyte (not shown), and the battery cell 202 is immersed in the electrolyte so that the battery cell 202 can be charged and discharged by the electrolyte. Optionally, the shell 201 includes a first cover plate 2011 and a second cover plate 2012, and the first cover plate 2011 and the second cover plate 2012 are respectively arranged back to back in the length direction of the shell 201, and the first cover plate 2011 and the second cover plate 2012 are both provided with a pole 2013 and a sampling point 2014. The first cover plate 2011 is also provided with an explosion-proof valve 2015, and the second cover plate 2012 is also provided with a liquid injection port 2016. The pole 2013 is used to electrically connect the battery device 1000 with the aforementioned electrical device or other battery devices 1000, the sampling point 2014 is used to collect electrolyte, the liquid injection port 2016 is used to inject electrolyte into the sealed space and is closed after the electrolyte is injected, and the explosion-proof valve 2015 is used to spray out the electrolyte when the battery 200 generates high temperature and high pressure due to abnormal conditions such as overcharging and short circuit.

[0045] The battery device 1000 is provided with a battery 200 and a housing 10 in the embodiment of the present invention, and the battery 200 is accommodated in the accommodation space 11 of the housing 10. Alternatively, the battery device 1000 includes a battery 200 and a housing assembly 100 in the embodiment of the present invention, and the battery 200 is accommodated in the accommodation space 11 of the housing 10 of the housing assembly 100. The heat insulating sheet 20 of the housing assembly 100 and the battery 200 are arranged relative to each other in the thickness direction of the battery 200, so as to realize the storage and output of electric energy. Meanwhile, the electrolyte in the battery 200 is not easy to be ejected from the height direction of the battery 200 under the support of the housing 10 or the housing assembly 100, so as to prevent the battery 200 from being short-circuited due to the damage of the leaked electrolyte. The heat insulating sheet 20 can effectively isolate multiple batteries 200, so that the multiple batteries 200 have a relatively isolated working environment, and the battery 200 is not easily affected by other batteries 200 or the external environment.

[0046] Please refer to Figure 4 , the thickness of the heat insulation sheet 20 in the second direction is A, and the depth of the first receiving groove 143 in the second direction is B, satisfying A≤B. Optionally, the depth of the second receiving groove 153 in the second direction is C, satisfying C≤B. Optionally, an insulating film 204 is also provided between the shell 201 and the outer shell 10. Optionally, an insulating film 204 is also provided between the heat insulation sheet 20 and the outer shell 10. Optionally, the insulating film 204 can be made of a material with stable chemical properties, good electrical insulation and high temperature resistance, specifically polypropylene, polyimide, aluminum oxide, polyolefin and polyurethane, etc., without limitation.

[0047] By setting the thickness of the heat insulating sheet 20 in the second direction to A and the depth of the first receiving groove 143 in the second direction to B, A≤B is satisfied, so that the thickness of the battery device 1000 does not increase, thereby preventing the energy density of the electrical equipment from being reduced.

[0048] Please refer to Figure 2 The present invention also provides a shell assembly 100, including a heat insulating sheet 20 and a shell 10 in an embodiment of the present invention, the heat insulating sheet 20 is accommodated in the first receiving groove 143 of the shell 10, and / or the heat insulating sheet 20 is accommodated in the second receiving groove 153 of the shell 10. Optionally, the heat insulating sheet 20 may be made of a material with low thermal conductivity, stable chemical properties and high temperature resistance, specifically aerogel, glass fiber, ceramic fiber and polyimide, etc., without limitation. Optionally, the heat insulating sheet 20 may be connected and fixed to the shell 10 by bonding, hot pressing and welding, etc., without limitation. Optionally, the thickness of the heat insulating sheet 20 is relatively thin, so that the electrical equipment used has a higher energy storage density.

[0049] The shell assembly 100 uses the heat insulation sheet 20 and the shell 10 in the embodiment of the utility model. The heat insulation sheet 20 is accommodated in the first receiving groove 143 of the shell 10, and / or the heat insulation sheet 20 is accommodated in the second receiving groove 153 of the shell 10, so that the shell assembly 100 supports the battery 200, prevents the electrolyte from spraying out from the height direction of the battery 200, and avoids the battery 200 from short-circuiting due to the damage of the leaked electrolyte. The heat insulation sheet 20 can effectively isolate multiple batteries 200, so that the multiple batteries 200 have a relatively isolated working environment, and the battery 200 is not easily affected by other batteries 200 or the external environment.

[0050] The housing 10 in the embodiment of the utility model is described in detail below.

[0051] Please refer to Figure 2 and Figure 3 The utility model also provides a shell 10, which encloses a receiving space 11. The receiving space 11 is suitable for receiving a battery 200. The battery includes a shell 201 and a battery cell 202. The battery cell 202 is received in the shell 201. The shell 10 is suitable for limiting the deformation of the shell 201 in a first direction, and the first direction is suitable for being the same as the height direction of the battery 200.

[0052] Optionally, there may be multiple shells 10, and the multiple shells 10 are arranged in sequence along the third direction, and the third direction is suitable to be the same as the length direction of the battery 200. Optionally, the multiple shells 10 can be arranged at intervals or connected in sequence, without limitation. Optionally, the shell 10 can be made of a material that meets the structural strength and is easy to process and form, specifically aluminum alloy, carbon fiber, special alloy and the like, without limitation.

[0053] By setting the shell 10, the shell 10 encloses a receiving space 11, and the receiving space 11 is suitable for receiving a battery 200. The battery includes a shell 201 and a battery cell 202. The battery cell 202 is received in the shell 201. The shell 10 is suitable for limiting the deformation of the shell 201 in a first direction, and the first direction is suitable to be the same as the height direction of the battery 200, so that the battery 200 is not prone to electrolyte spraying out from the height direction of the battery 200 under the support of the shell 10.

[0054] Please refer to Figure 3 The housing 10 includes a bottom plate 12, a top plate 13, a first connecting plate 14 and a second connecting plate 15. The bottom plate 12 and the top plate 13 are opposite to each other in a first direction. The first connecting plate 14 and the second connecting plate 15 are spaced apart in a second direction. One end of the first connecting plate 14 in the first direction is connected to the top plate 13, and the other end is connected to the bottom plate 12. One end of the second connecting plate 15 in the first direction is connected to the top plate 13, and the other end is connected to the bottom plate 12. The second direction is suitable to be the same as the thickness direction of the battery 200.

[0055] Optionally, in the orthographic projection in the third direction, the outline shape of the housing 10 may be a rectangle, a parallelogram, a trapezoid, etc., without limitation, so that the shape of the housing 10 matches the shape of the battery 200 .

[0056] By setting the bottom plate 12, the top plate 13, the first connecting plate 14 and the second connecting plate 15, the bottom plate 12 and the top plate 13 are opposite to each other in the first direction, the first connecting plate 14 and the second connecting plate 15 are opposite to each other in the second direction, one end of the first connecting plate 14 in the first direction is connected to the top plate 13, and the other end is connected to the bottom plate 12, the second connecting plate 15 is connected to the top plate 13 at one end in the first direction, and the other end is connected to the bottom plate 12, and the second direction is suitable to be the same as the thickness direction of the battery 200, so that the top plate 13 and the bottom plate 12 are connected and fixed by the first connecting plate 14 and the second connecting plate 15 to provide support force for the shell 201 to prevent the electrolyte from spraying out in the height direction of the battery 200 during thermal runaway.

[0057] Please refer to Figure 4 The first connecting plate 14 has a first surface 141 and a second surface 142 facing each other in the second direction, the second surface 142 faces the second connecting plate 15, and the first surface 141 is provided with a first receiving groove 143 recessed toward the second surface 142, and the first receiving groove 143 is used to accommodate the aforementioned heat insulation sheet 20. Optionally, in the orthographic projection in the second direction, the contour shape of the first receiving groove 143 may be rectangular, circular, elliptical, non-circular, etc., without limitation. Optionally, the side wall surface of the first receiving groove 143 is smoothly connected to the connection with the first surface 141 to prevent the sharp part of the housing 10 from causing damage to the operator and other parts of the battery device 1000. Optionally, the first receiving groove 143 may be made by stamping, injection molding, cutting, etc., without limitation.

[0058] The first connecting plate 14 is provided with a first surface 141 and a second surface 142 opposite to each other in a second direction, the second surface 142 faces the second connecting plate 15, and the first surface 141 is provided with a first receiving groove 143 recessed toward the second surface 142, so that the first receiving groove 143 can accommodate the aforementioned thermal insulation sheet 20, so that after the outer shell 10 is sleeved on the battery 200, the thickness of the battery device 1000 will not be increased, thereby ensuring the energy density of the electrical equipment.

[0059] Please refer to Figure 3 There are multiple first accommodating grooves 143, and the multiple first accommodating grooves 143 are arranged at intervals in the third direction, and the third direction is suitable to be the same as the length direction of the battery. Optionally, the multiple first accommodating grooves 143 can also be arranged at intervals in the first direction. Optionally, the multiple first accommodating grooves 143 can also be arranged in a grid, staggered, or free arrangement on the first connecting plate 14, without limitation.

[0060] By providing a plurality of first accommodating grooves 143, the plurality of first accommodating grooves 143 are spaced apart in a third direction, and the third direction is adapted to be the same as the length direction of the battery, so that the outer shell 10 has a higher structural strength, so that the outer shell 10 can provide a greater supporting force for the shell 201, thereby preventing the electrolyte from spraying out in the height direction of the battery 200 during thermal runaway.

[0061] Please refer to Figure 3 The first receiving groove 143 is a through groove that passes through the first surface 141 and the second surface 142. The first receiving groove 143 connects the first surface 141 and the receiving space 11. The first connecting plate 14 forms a plurality of first connecting ribs 144, and the plurality of first connecting ribs 144 are arranged at intervals in the third direction. Optionally, the side wall surface of the first receiving groove 143 is smoothly connected to the connection point of the second surface 142 to prevent the sharp part of the shell 10 from scratching the housing 201.

[0062] Optionally, the ratio of the width dimension of the first connecting rib 144 in the third direction to the length dimension of the housing 10 in the third direction can be 1 / 40-1 / 30, specifically 1 / 40, 1 / 45 and 1 / 30, etc., without limitation. Optionally, the first connecting rib 144 can be extended along the first direction, or can be inclined between the bottom plate 12 and the top plate 13, without limitation. Optionally, the shape of the first connecting rib 144 in the orthographic projection in the second direction can be a rectangle, a parallelogram, a non-parallelogram, etc., without limitation.

[0063] By setting the first accommodating groove 143 as a through groove penetrating the first surface 141 and the second surface 142, the first accommodating groove 143 connects the first surface 141 and the accommodating space 11, and the first connecting plate 14 forms a plurality of first connecting ribs 144, and the plurality of first connecting ribs 144 are arranged at intervals in the third direction. Compared with the solution in which the first accommodating groove 143 does not penetrate to the second surface 142, the first accommodating groove 143 can accommodate a thicker heat insulating sheet 20 without increasing the thickness of the battery device 1000, thereby further enhancing the heat insulating performance of the heat insulating sheet 20. At the same time, after the first connecting plate 14 is provided with a plurality of first accommodating grooves 143, it still has a structural strength that meets the requirements, thereby ensuring the supporting force provided by the outer shell 10 to the shell 201, and preventing the electrolyte from spraying out in the height direction of the battery 200 during thermal runaway.

[0064] Please refer to Figure 3 The second connecting plate 15 has a third surface 151 and a fourth surface 152 opposite to each other in the second direction, the fourth surface 152 faces the first connecting plate 14, the third surface 151 is provided with a second accommodating groove 153 that passes through the fourth surface 152, and the second connecting plate 15 forms a plurality of second connecting ribs 154, and the plurality of second connecting ribs 154 are arranged at intervals in the third direction.

[0065] Optionally, the width of the second connecting rib 154 in the third direction is similar to that of the first connecting rib 144, which can be used as a reference and will not be described in detail. Optionally, the extension direction of the second connecting rib 154 is similar to that of the first connecting rib 144, which can be used as a reference and will not be limited. Optionally, the shape of the second connecting rib 154 in the orthographic projection in the second direction is similar to that of the first connecting rib 144, which can be used as a reference and will not be described in detail.

[0066] Optionally, the second accommodating groove 153 may also be a groove concave from the third surface 151 to the fourth surface 152, without limitation. Optionally, there are multiple second accommodating grooves 153, and the multiple second accommodating grooves 153 are arranged at intervals in the third direction, and the third direction is suitable to be the same as the length direction of the battery. Optionally, the multiple second accommodating grooves 153 may also be arranged at intervals in the first direction. Optionally, the multiple second accommodating grooves 153 may also be arranged in a grid, staggered, free, etc. on the second connecting plate 15, without limitation.

[0067] The second connecting plate 15 is provided with a third surface 151 and a fourth surface 152 opposite to each other in the second direction, the fourth surface 152 faces the first connecting plate 14, and the third surface 151 is provided with a second accommodating groove 153 penetrating to the fourth surface 152. The second connecting plate 15 forms a plurality of second connecting ribs 154, and the plurality of second connecting ribs 154 are arranged at intervals in the third direction, so that both ends of the outer shell 10 in the first direction can be provided with a heat insulating sheet 20, and the heat insulating performance of the heat insulating sheet 20 can be further enhanced without increasing the thickness of the battery device 1000, thereby ensuring the energy density of the electrical equipment. At the same time, the plurality of second connecting ribs 154 can provide the bottom plate 12 and the top plate 13 with a tensile force sufficient for the structural strength, thereby ensuring the supporting force provided by the outer shell 10 to the shell 201, and preventing the electrolyte from spraying out in the height direction of the battery 200 during thermal runaway.

[0068] Please refer to Figure 3 , the first connecting rib 144 and the second connecting rib 154 at least partially overlap in the orthographic projection in the second direction. Optionally, the first connecting rib 144 and the second connecting rib 154 may be arranged opposite to each other in the second direction. Optionally, the first connecting rib 144 and the second connecting rib 154 may be arranged partially overlapping in the second direction, and the ratio of the overlapping area of ​​the first connecting rib 144 and the second connecting rib 154 to the area of ​​the first connecting rib 144 may be 1 / 10-10 / 10, specifically 1 / 10, 2 / 10, 2 / 10, 4 / 10, 5 / 10, 6 / 10, 7 / 10, 8 / 10, 9 / 10 and 10 / 10, etc., without limitation.

[0069] By arranging the first connecting rib 144 and the second connecting rib 154 to at least partially overlap in the orthographic projection in the second direction, the first connecting rib 144 and the second connecting rib 154 can be arranged directly opposite to each other in the second direction, or can be arranged to partially overlap in the second direction, so that the tension provided by the multiple first connecting ribs 144 and the multiple second connecting ribs 154 to the bottom plate 12 and the top plate 13 is more uniform, thereby ensuring the supporting force provided by the outer shell 10 to the shell 201, and preventing the electrolyte from spraying out in the height direction of the battery 200 during thermal runaway.

[0070] Please refer to Figure 3 , the first connecting rib 144 and the second connecting rib 154 are arranged at intervals in the orthographic projection in the second direction. Optionally, in the orthographic projection in the second direction, one second connecting rib 154 is located in the middle between two adjacent first connecting ribs 144, or can be arranged near any first connecting rib 144. Optionally, in the orthographic projection in the second direction, a plurality of second connecting ribs 154 can be arranged between two adjacent first connecting ribs 144, and the plurality of second connecting ribs 154 are evenly spaced between the two first connecting ribs 144.

[0071] Optionally, in the orthographic projection in the second direction, one first connecting rib 144 is located in the middle between two adjacent second connecting ribs 154, or may be located near any second connecting rib 154. Optionally, in the orthographic projection in the second direction, a plurality of first connecting ribs 144 may be provided between two adjacent second connecting ribs 154, and the plurality of first connecting ribs 144 are evenly spaced between the two second connecting ribs 154.

[0072] By arranging the first connecting ribs 144 and the second connecting ribs 154 to be spaced apart in the orthographic projection in the second direction, one or more second connecting ribs 154 may be arranged between two adjacent first connecting ribs 144 in the orthographic projection in the second direction, or one or more first connecting ribs 144 may be arranged between two adjacent second connecting ribs 154, so that the pulling force provided by the multiple first connecting ribs 144 and the multiple second connecting ribs 154 to the bottom plate 12 and the top plate 13 is more uniform, thereby ensuring the supporting force provided by the outer shell 10 to the shell 201, preventing the electrolyte from spraying out in the height direction of the battery 200 during thermal runaway, and reducing the difficulty of the manufacturing process of the outer shell 10, which is beneficial to reducing the manufacturing cost of the outer shell 10.

[0073] Please refer to Figure 3The top plate 13 includes a first main body portion 131, a first bent portion 132 and a second bent portion 133, the first bent portion 132 and the second bent portion 133 are respectively connected to the edges of the first main body portion 131 in the second direction, and the first bent portion 132 and the second bent portion 133 are bent toward one side of the bottom plate 12, the first connecting plate 14 is connected to the first bent portion 132, and the second connecting plate 15 is connected to the second bent portion 133.

[0074] Optionally, the ratio of the width dimension of the first main body 131 in the second direction to the width dimension of the shell 10 in the second direction can be 2 / 5-4 / 5, specifically 2 / 5, 3 / 5 and 4 / 5, etc., without limitation. When the ratio of the width dimension of the first main body 131 in the second direction to the width dimension of the shell 10 in the second direction is less than 2 / 5, the contact area between the first main body 131 and the shell 201 is small, and there is a risk of insufficient support for the shell 10. When the ratio of the width dimension of the first main body 131 in the second direction to the width dimension of the shell 10 in the second direction is greater than 4 / 5, the size of the first curved portion 132 and the second curved portion 133 is too small, the processing difficulty is large, and the production cost is high. Optionally, the first curved portion 132 can be multiple, and the multiple first curved portions 132 are spaced in the first direction and connected to the multiple first connecting plates 14 one by one. Optionally, the second curved portion 133 is also multiple, and the multiple second curved portions 133 are spaced in the first direction and connected to the multiple second connecting plates 15 one by one. Optionally, the base plate 12 includes a second main body portion 121, a third bent portion 122 and a fourth bent portion 123. The structures of the second main body portion 121, the third bent portion 122 and the fourth bent portion 123 are similar to the structures of the first main body portion 131, the first bent portion 132 and the second bent portion 133, respectively, and they can be used for reference only and will not be repeated here.

[0075] By setting the top plate 13 to include a first main body portion 131, a first bent portion 132 and a second bent portion 133, the first bent portion 132 and the second bent portion 133 are respectively connected to the edges of the first main body portion 131 in the second direction, and the first bent portion 132 and the second bent portion 133 are bent toward one side of the bottom plate 12, the first connecting plate 14 is connected to the first bent portion 132, and the second connecting plate 15 is connected to the second bent portion 133, so that the respective connections between the bottom plate 12 and the top plate 13 and the first connecting plate 14 and the second connecting plate 15 can be matched with the connection between the two adjacent panels of the shell 201, so that the shell 201 can be accommodated in the accommodating space 11 of the shell 10, thereby improving the stability of the connection between the shell 10 and the shell 201, and preventing the sharp parts of the shell 10 from causing damage to other components or assemblers.

[0076] Please refer to Figure 3The first main body 131 and the first curved portion 132 have a smooth transition, and / or the first main body 131 and the second curved portion 133 have a smooth transition, and / or the first curved portion 132 and the first connecting plate 14 have a smooth transition, and / or the second curved portion 133 and the second connecting plate 15 have a smooth transition. Optionally, the structure of the bottom plate 12 is similar to that of the first connecting plate 14, which can be referred to and will not be described in detail.

[0077] By arranging a smooth transition between the first main body 131 and the first curved portion 132, and / or a smooth transition between the first main body 131 and the second curved portion 133, and / or a smooth transition between the first curved portion 132 and the first connecting plate 14, and / or a smooth transition between the second curved portion 133 and the second connecting plate 15, the stress at the connection between the first main body 131 and the first curved portion 132 and the second connecting plate 15 is small, the stress at the connection between the first curved portion 132 and the first connecting plate 14 is small, and the stress at the connection between the second curved portion 133 and the second curved portion 133 is small, so that deformation and fracture are not easy to occur, thereby preventing the electrolyte from spraying out in the height direction of the battery 200 during thermal runaway, and preventing the sharp part of the shell 10 from causing damage to other components or assemblers.

[0078] Please refer to Figure 4 , the thickness of the bottom plate 12 is greater than the thickness of the first connecting plate 14 and the second connecting plate 15, and / or, the thickness of the top plate 13 is greater than the thickness of the first connecting plate 14 and the second connecting plate 15. Optionally, the thickness of the first connecting plate 14 may be 0.1mm (millimeter)-0.4mm, specifically 0.1mm, 0.2mm, 0.3mm and 0.4mm, etc., without limitation. Optionally, the thickness of the second connecting plate 15 is similar to that of the first connecting plate 14, which can be referred to and will not be described in detail. Optionally, the thickness of the bottom plate 12 may be 0.4mm-0.7mm, specifically 0.4mm, 0.5mm, 0.6mm and 0.7mm, etc., without limitation. Optionally, the thickness of the top plate 13 is similar to that of the bottom plate 12, which can be referred to and will not be described in detail.

[0079] Optionally, the thickness of the second main body 121 may be greater than the thickness of the first connecting plate 14 and the second connecting plate 15, and the thickness of the third bent portion 122 gradually decreases from the second main body 121 to the first connecting plate 14 to the same as the first connecting plate 14. Optionally, the thickness of the fourth bent portion 123 gradually decreases from the second main body 121 to the second connecting plate 15 to the same as the second connecting plate 15. Optionally, the thickness of the first main body 131, the second bent portion 133 and the second bent portion 133 are similar to the thickness of the second main body 121, the third bent portion 122 and the fourth bent portion 123, which can be referred to and will not be repeated.

[0080] By setting the thickness of the bottom plate 12 to be greater than the thickness of the first connecting plate 14 and the second connecting plate 15, and / or the thickness of the top plate 13 to be greater than the thickness of the first connecting plate 14 and the second connecting plate 15, the bottom plate 12 and the top plate 13 have greater structural strength, thereby preventing the electrolyte from spraying out in the height direction of the battery 200 during thermal runaway.

[0081] Please refer to Figure 3 The housing 10 is an integrated structure. Optionally, the housing 10 can be made by laser welding, stamping, and compression molding, etc., without limitation. Optionally, the housing 10 can also be a detachable structure, and the housing 10 can be assembled by riveting, screwing, and clamping.

[0082] By setting the shell 10 as an integrated structure, the shell 10 has higher strength and stability, preventing the electrolyte from spraying out from the height direction of the battery 200 during thermal runaway. In addition, the molding method is mature, the production cost is low, and the production difficulty is low.

[0083] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0084] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A housing, It is characterized in that The shell encloses a receiving space, and the receiving space is suitable for receiving a battery. The battery includes a battery cell and a shell. The battery cell is received in the shell. The shell is suitable for limiting the deformation of the shell in a first direction, and the first direction is suitable to be the same as the height direction of the battery.

2. The housing according to claim 1, It is characterized in that The housing comprises a bottom plate, a top plate, a first connecting plate and a second connecting plate, the bottom plate and the top plate are opposite to each other in the first direction, and the first connecting plate and the second connecting plate are spaced apart in the second direction; One end of the first connecting plate in the first direction is connected to the top plate, and the other end is connected to the bottom plate; one end of the second connecting plate in the first direction is connected to the top plate, and the other end is connected to the bottom plate; The second direction is adapted to be the same as a thickness direction of the battery.

3. The housing according to claim 2, It is characterized in that The first connecting plate has a first surface and a second surface opposite to each other in the second direction, the second surface faces the second connecting plate, and the first surface is provided with a first accommodating groove recessed toward the second surface.

4. The housing according to claim 3, It is characterized in that There are a plurality of the first accommodating grooves, and the plurality of the first accommodating grooves are arranged at intervals in a third direction, and the third direction is suitable to be the same as the length direction of the battery.

5. The housing according to claim 4, It is characterized in that The first containing groove is a through groove that passes through the first surface and the second surface, and the first containing groove communicates with the first surface and the containing space; The first connecting plate forms a plurality of first connecting ribs, and the plurality of first connecting ribs are arranged at intervals in the third direction.

6. The housing according to claim 5, It is characterized in that The second connecting plate has a third surface and a fourth surface facing each other in the second direction, the fourth surface faces the first connecting plate, and the third surface is provided with a second receiving groove penetrating to the fourth surface; The second connecting plate forms a plurality of second connecting ribs, and the plurality of second connecting ribs are arranged at intervals in the third direction.

7. The housing according to claim 6, It is characterized in that The first connecting rib and the second connecting rib at least partially overlap in an orthographic projection in the second direction.

8. The housing according to claim 6, It is characterized in that The first connecting rib and the second connecting rib are arranged at intervals in the orthographic projection in the second direction.

9. The housing according to claim 2, It is characterized in that The top plate includes a first main body portion, a first curved portion, and a second curved portion, wherein the first curved portion and the second curved portion are respectively connected to the edge of the first main body portion in the second direction, and the first curved portion and the second curved portion are curved toward one side of the bottom plate; The first connecting plate is connected to the first bent portion, and the second connecting plate is connected to the second bent portion.

10. The housing according to claim 9, It is characterized in that The first main body portion and the first curved portion have a smooth transition, and / or the first main body portion and the second curved portion have a smooth transition, and / or the first curved portion and the first connecting plate have a smooth transition, and / or the second curved portion and the second connecting plate have a smooth transition.

11. The housing according to claim 2, It is characterized in that The thickness of the bottom plate is greater than the thickness of the first connecting plate and the second connecting plate, and / or the thickness of the top plate is greater than the thickness of the first connecting plate and the second connecting plate.

12. The housing according to any one of claims 1 to 11, It is characterized in that The shell is an integrated structure.

13. A housing assembly, It is characterized in that It comprises a heat insulating sheet and a housing as described in any one of claims 1 to 12, wherein the heat insulating sheet is received in a first receiving groove of the housing, and / or the heat insulating sheet is received in a second receiving groove of the housing.

14. The housing assembly according to claim 13, It is characterized in that The thickness of the heat insulation sheet in the second direction is A, and the depth of the first accommodation groove in the second direction is B, satisfying A≤B.

15. A battery device, It is characterized in that comprising a battery and a housing as claimed in any one of claims 1 to 12, wherein the battery is accommodated in a receiving space of the housing; or, The battery device comprises a battery and a housing assembly as claimed in claim 13 or 14, wherein the battery is accommodated in a housing space of a housing of the housing assembly.

16. An electrical device, It is characterized in that Comprising the battery device as claimed in claim 15.

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