CN218274840U - Battery box, battery and consumer - Google Patents

Abstract

The application discloses box, battery and consumer of battery belongs to battery technical field. The box includes the boundary beam, and the boundary beam is used for injecing the chamber that holds of the box of battery, and the boundary beam is hollow structure, and the inside crumple zone that sets up of boundary beam, the crumple zone is configured to take place to warp when receiving external force. Because the boundary beam is hollow structure and is provided with the crumple zone in inside, the crumple zone is configured to take place to warp when receiving external force. When the battery is subjected to external force, the crumple zone is compressed and deformed so as to absorb energy generated by the external force, reduce the energy transmitted to the inside of the box body, reduce the risk of failure of the battery module in the battery and improve the safety of the battery.

Description

Battery box, battery and consumer

Technical Field

The application relates to the technical field of batteries, in particular to a battery box, a battery and electric equipment.

Background

Batteries are widely used in electronic devices such as mobile phones, notebook computers, battery cars, electric automobiles, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, electric tools, and the like.

In addition to improving the performance of batteries, the safety of batteries is also a concern in the development of battery technology.

Therefore, how to improve the safety of the battery is a problem to be solved urgently in the battery technology.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the present application provides a battery case, a battery, and an electric device, which can improve the safety of the battery.

In a first aspect, the application provides a box of battery, the box includes the boundary beam, and the boundary beam is used for injecing the chamber that holds of the box of battery, and the boundary beam is hollow structure, and the inside crumple zone that sets up of boundary beam, the crumple zone is configured to take place to warp when receiving external force.

In the technical scheme of this application embodiment, because the boundary beam is hollow structure and inside is provided with the crumple zone, the crumple zone is configured to take place to warp when receiving external force. When the battery is subjected to external force, the crumple zone is compressed and deformed so as to absorb energy generated by the external force, reduce the energy transmitted to the inside of the box body, reduce the risk of failure of the battery module in the battery and improve the safety of the battery.

In some embodiments, the first support rib is disposed inside the side beam in the crush zone, and the first support rib is connected between two opposite wall portions of the crush zone, and the first support rib is disposed obliquely relative to the two opposite wall portions. When the battery receives lateral force, the first supporting ribs which are obliquely arranged relative to the two opposite wall parts can guide the adjacent area to deform more easily, and then the crumple zone is guided to be compressed, so that the crumple zone can absorb energy.

In some embodiments, the included angle between the plane of the first supporting rib and the thickness direction of the two opposite wall parts is alpha, and the included angle is more than 0 degrees and less than or equal to 45 degrees. With the plane at first support muscle place and the contained angle setting between the thickness direction of two relative wall portions in reasonable within range, on the one hand, can reduce because of the battery that the contained angle undersize leads to receive the unable guide of first support muscle when the lateral force bursts to contract, burst the not good risk of district's compression difficulty energy-absorbing effect of contracting, on the other hand can reduce because of the contained angle too big easy deformation of boundary beam that leads to, the unstable risk of battery carry.

In some embodiments, the thickness of the first supporting rib is A, and the thickness of the wall part of the edge beam is B, so that A/B is more than or equal to 0.1 and less than or equal to 0.5. The ratio setting of the thickness of the wall portion of the thickness of first support muscle and boundary beam is in reasonable within range, on the one hand, can reduce because of the ratio is too big, and the battery that first support muscle thickness is too big leads to receives the lateral force when first support muscle can't guide to burst and contracts, bursts and contracts the not good risk of district's compression difficulty energy-absorbing effect, and on the other hand can reduce because of the ratio undersize, first support muscle thickness undersize boundary beam yielding, the unstable risk of battery carry.

In some embodiments, the first support rib is provided in plurality, and the plurality of first support ribs are arranged at intervals. By the design, when the battery is subjected to lateral force, the range of the crumple zone is expanded, the transfer time of energy generated by the lateral force is prolonged, and the energy absorption capacity of the crumple zone is improved.

In some embodiments, the edge beam is provided with a second support rib inside, the second support rib is connected between two opposite wall parts of the edge beam, the second support rib is located outside the crumple zone, and the thickness of the second support rib is larger than that of the first support rib. Due to the design, the first supporting ribs are easier to deform than the second supporting ribs, when the battery is subjected to lateral force, the crumple zone deforms before other areas of the edge beam, most of energy generated by the lateral force is absorbed by the crumple zone, and the possibility of transmitting excessive energy to the battery is reduced.

In some embodiments, the second support rib is provided in plurality, and the plurality of second support ribs are arranged at intervals. Due to the design, the structural strength of the edge beam is improved.

In some embodiments, the boundary beam comprises a first beam and a second beam, the first beam is used for limiting the inner space of the box body, the second beam is arranged on the outer side of the first beam, a mounting hole is formed in the second beam, and the crumple zone is located on the second beam. Due to the design, the distance between the interior of the box body and the crumple zone is increased, and the possibility of energy transmission to the interior of the box body is reduced.

In some embodiments, the boundary beam comprises a first beam and a second beam, the first beam is used for limiting the inner space of the box body, the second beam is arranged on the outer side of the first beam, a mounting hole is formed in the second beam, and the crumple zone is located on the first beam. Due to the design, the arrangement mode of the crumple zone in the boundary beam is enriched. The crumple zone can also be positioned on the first beam and the second beam, so that the range of the crumple zone is expanded, the transfer time of energy generated by lateral force is prolonged, and the energy absorption capacity of the crumple zone is improved.

In a second aspect, the present application provides a battery comprising the case of the above embodiment.

In a third aspect, the present application provides a powered device comprising the battery of the above embodiments.

The foregoing description is only an overview of the technical solutions of the present application, and the following detailed description of the present application is given to make the technical means of the present application more clearly understood and to make other objects, features, and advantages of the present application more obvious and understandable.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Moreover, like reference numerals are used to refer to like elements throughout. In the drawings:

FIG. 1 is a schematic structural diagram of a vehicle according to some embodiments of the present application;

fig. 2 is a side view of a battery according to some embodiments of the present application;

FIG. 3 is a cross-sectional view of an edge rail according to some embodiments of the present application;

FIG. 4 is an enlarged view of a portion of the present application at D in FIG. 3;

FIG. 5 is a cross-sectional view of an edge rail according to further embodiments of the present application;

fig. 6 is a partial enlarged view of fig. 5 at E.

The reference numbers in the detailed description are as follows:

1000-a vehicle; 300-a controller; 400-a motor; 100-a battery; 11-edge beam; 10-a box body; 111-a first beam; 112-a second beam; 113-a first support rib; 114-second support ribs; 115-a wall portion; 116-crumple zone.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural pieces" refers to two or more (including two).

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the directions or positional relationships indicated in the drawings, and are only for convenience of description of the embodiments of the present application and for simplicity of description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

The batteries referred to in the art may be classified into disposable batteries and rechargeable batteries according to whether they are rechargeable or not. Types of rechargeable batteries that are common today are: lead-acid batteries, nickel-metal hydride batteries, and lithium ion batteries. Lithium ion batteries are currently widely used in pure electric vehicles and hybrid electric vehicles, and the lithium ion batteries used for such purposes have relatively low capacity, larger output and charging currents, longer service life and higher cost.

The battery described in the embodiments of the present application refers to a rechargeable battery. Hereinafter, embodiments disclosed in the present application will be described mainly with reference to a lithium ion battery as an example. It should be understood that embodiments disclosed herein are applicable to any other suitable type of rechargeable battery. The batteries referred to in the embodiments disclosed in the present application may be applied directly or indirectly to a suitable device for powering the device.

In some high power applications, such as electric vehicles, the application of batteries includes three levels: battery cell, battery module and battery. The battery module is formed by electrically coupling a certain number of battery cells together and putting them in a frame in order to protect the battery cells from external impact, heat, vibration, etc. The battery refers to a final state of a battery system incorporated in the electric vehicle. Batteries generally include a case for enclosing one or more battery cells. The box body generally consists of a cover body and a box shell.

Taking an electric vehicle as an example, a body sill beam of the electric vehicle is one of important protective components of the vehicle, and can resist the impact of external force when the vehicle is subjected to side collision, so that the injury degree of vehicle personnel is reduced. The battery is generally installed near a car body sill beam of the electric vehicle, and the box body and the sill beam are two completely independent systems which need to be connected together through a connecting piece. One of them relative side of the frame of box or one of them relative side of frame of battery generally is provided with the boundary beam, generally is provided with a plurality of carry holes that are used for being connected with the threshold roof beam on the boundary beam, for the stability that improves threshold roof beam and battery be connected, sets up carry portion at the carry hole more. The side beam of the box body and the threshold beam can be connected together through the mounting part.

The inventor has noted that, in order to ensure the structural strength of the box body, when designing the side beam having the mounting hole, the cross section of the side beam is generally designed to be a square shape and a closed cavity with an equal wall thickness. However, such a design has problems in that, for example, when the vehicle is involved in a side collision, energy generated by a lateral force due to the collision is transmitted to the inside of the case, and an electrolyte in the battery may leak, causing the battery to catch fire or explode, and the like. The inventor further researches and discovers that the above situation is caused by the fact that all areas of the side beam of the existing box body deform simultaneously when lateral force is applied, the side beam cannot effectively collapse and absorb energy, a large amount of energy is transmitted to the inside of the box body when a vehicle is impacted from the side, the battery fails, and the safety of the battery cannot be guaranteed.

Based on the consideration, in order to solve the problem that the safety of the battery is poor due to the fact that the boundary beam of the box body cannot be effectively collapsed and energy is absorbed, through intensive research, the inventor designs the box body of the battery, the boundary beam of the box body is provided with a collapse area, when the battery is subjected to lateral force, the collapse area can deform to absorb the energy, namely, the energy generated by the lateral force transmitted to the interior of the box body is reduced, and the safety of the battery is improved.

The technical scheme described in the embodiment of the application is suitable for the battery and the electric equipment using the battery. Powered devices include, but are not limited to: mobile phones, portable devices, notebook computers, battery cars, electric vehicles, ships, spacecraft, electric toys, electric tools, and the like, for example, spacecraft including airplanes, rockets, space shuttle, spacecraft, and the like, electric toys including stationary or mobile electric toys, for example, game machines, electric vehicle toys, electric ship toys, electric plane toys, and the like, electric tools including metal cutting electric tools, grinding electric tools, assembly electric tools, and electric tools for railways, for example, electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact electric drills, concrete vibrators, and electric planers. Powered devices include, but are not limited to: mobile phones, portable devices, notebook computers, battery cars, electric vehicles, ships, spacecraft, electric toys, electric tools, and the like, for example, spacecraft including airplanes, rockets, space shuttle, spacecraft, and the like, electric toys including stationary or mobile electric toys, for example, game machines, electric vehicle toys, electric ship toys, electric plane toys, and the like, electric tools including metal cutting electric tools, grinding electric tools, assembly electric tools, and electric tools for railways, for example, electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact electric drills, concrete vibrators, and electric planers.

For convenience of description, the following embodiments take an example in which a power consuming apparatus according to an embodiment of the present application is a vehicle 1000.

For example, referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the present application, where the vehicle 1000 may be a fuel-oil vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid electric vehicle, or an extended range vehicle. The vehicle 1000 may be provided with a motor 400, a controller 300, and a battery 100 inside, and the controller 300 is used to control the battery 100 to supply power to the motor 400. For example, the battery 100 may be provided at the bottom or the head or tail of the vehicle 1000. The battery 100 may be used for power supply of the vehicle 1000, for example, the battery 100 may be used as an operating power source of the vehicle 1000 for a circuit system of the vehicle 1000, for example, for power demand for operation during starting, navigation and operation of the vehicle 1000. In another embodiment of the present application, the battery 100 may be used not only as an operating power source of the vehicle 1000, but also as a driving power source of the vehicle 1000, instead of or in part of fuel or natural gas, to provide driving power to the vehicle 1000.

For example, referring to fig. 2, fig. 2 is a side view of a battery 100 according to some embodiments of the present disclosure, where the battery 100 may include a plurality of battery cells. The battery 100 may further include a case 10, the case 10 having a hollow structure therein, and a plurality of battery cells accommodated in the case 10. A plurality of battery cells are connected in parallel or in series-parallel combination and then placed in the box body 10. One of the opposite side surfaces of the box body 10 is provided with a side beam 11, the side beam 11 is provided with a mounting hole, and the box body 10 is connected with the vehicle 1000 through a mounting part arranged in the mounting hole.

According to some embodiments of the present application, referring to fig. 2, 3 and 4, the present application provides a case 10 of a battery 100, the case 10 includes a side beam 11, the side beam 11 is used for defining a receiving cavity of the case 10 of the battery 100, the side beam 11 is a hollow structure, a crush zone 116 is disposed inside the side beam 11, and the crush zone 116 is configured to deform when an external force is applied.

The outline of the edge beam 11 can be L-shaped, U-shaped, straight-line-shaped, etc.

The material of the boundary beam 11 is a material with strong anti-extrusion capability, and comprises aluminum alloy, stainless steel and the like.

The edge beam 11 may be formed by bending and welding stainless steel, stamping and welding stainless steel, casting aluminum alloy, or extruding aluminum alloy.

In some embodiments, the sill 11 includes a plurality of walls 115, and the plurality of walls 115 enclose a hollow cavity.

In some embodiments, the first support rib 113 may be disposed within the edge rail 11, the first support rib 113 being connected between two opposing wall portions 115 of the edge rail 11, the first support rib 113 satisfying: are disposed obliquely with respect to the two opposing wall portions 115 and/or are of a thickness less than the thickness of the wall portions 115 of the edge beam 11. When the first support rib 113 meets the above conditions, and the battery 100 is subjected to an external force, the support rib may deform to further guide the adjacent region to deform to absorb energy, the region that deforms first is the crumple zone 116, for example, the second support rib 114 with a thickness greater than that of the first support rib 113 may be arranged in the edge beam 11 to improve the deformation resistance of the region outside the crumple zone 116 in the edge beam 11, and the deformation and energy absorption range of the edge beam 11 may be controlled in the crumple zone 116 as much as possible.

In the technical solution of the embodiment of the present application, since the boundary beam 11 is a hollow structure and is provided with the crumple zone 116 inside, the crumple zone 116 is configured to deform when receiving an external force. When the battery 100 is subjected to an external force, the crush zone 116 is compressed and deformed to absorb energy generated by the external force, so as to reduce energy transmitted to the inside of the case 10, reduce the risk of failure of the battery 100 module inside the battery 100, and improve the safety of the battery 100.

According to some embodiments of the present application, referring to fig. 3 and 4, in the crush zone 116, the first support rib 113 is disposed inside the side sill 11, the first support rib 113 is connected between two opposite wall portions 115 of the crush zone 116, and the first support rib 113 is disposed obliquely with respect to the two opposite wall portions 115.

The number of the first supporting ribs 113 may be one or more, for example, if the number of the first supporting ribs 113 is multiple, the multiple first supporting ribs 113 are arranged at intervals.

In some embodiments, the thickness of the first support rib 113 may be equal to or less than the thickness of the wall portion 115 of the edge beam 11.

When the battery 100 is subjected to a lateral force, the first support rib 113 obliquely arranged relative to the two opposite wall portions 115 can more easily guide the deformation of the area nearby, and further guide the compression of the crush zone 116, so that the crush zone 116 absorbs more energy.

According to some embodiments of the present application, referring to fig. 3 and 4, an angle α between a plane in which the first support rib 113 is located and a thickness direction of the two opposing wall portions 115 is satisfied, where 0 ° < α ≦ 45 °.

Referring to fig. 3 and 5, a broken line a in the cross-sectional view is a plane where the first support rib 113 is located, and the X direction is a thickness direction of the two opposite wall portions 115.

α may be any number greater than 0 ° and equal to or less than 45 °, for example, 1 °, 2 °, 3 °, 4 °, 5 °, 6 °, 7 °, 8 °, 9 °, 10 °, 11 °, 12 °, 13 °, 14 °, 15 °, 16 °, 17 °, 18 °, 19 °, 20 °, 21 °, 22 °, 23 °, 24 °, 25 °, 26 °, 27 °, 28 °, 29 °, 30 °, 31 °, 32 °, 33 °, 34 °, 35 °, 36 °, 37 °, 38 °, 39 °, 40 °, 41 °, 42 °, 43 °, 44 °, 45 °.

With the contained angle setting between the plane at first support rib 113 place and the thickness direction of two relative wall portions 115 at reasonable within range, on the one hand, can reduce because of the battery 100 that the contained angle undersize leads to receives lateral force the unable guide of first support rib 113 and burst and contract, burst contract district 116 compression difficulty energy-absorbing effect not good risk, on the other hand, can reduce because of the too big yielding of contained angle lead to boundary beam 11, the unstable risk of battery 100 carry.

According to some embodiments of the present application, referring to FIGS. 3 and 4, the thickness of the first support rib 113 is A and the thickness of the wall portion 115 of the side sill 11 is B, such that 0.1 ≦ A/B ≦ 0.5.

a/B represents the ratio of the thickness of the first support rib 113 to the thickness of the wall portion 115 of the side member 11.

In some embodiments, the thickness of the first support rib 113 is less than the thickness of the wall portion 115 of the edge rail 11, and a/B may be any value between 0.1 and 0.5, such as 0.1, 0.12, 0.14, 0.16, 0.18, 0.2, 0.22, 0.24, 0.26, 0.28, 0.30, 0.32, 0.34, 0.36, 0.38, 0.4, 0.42, 0.44, 0.46, 0.48, 0.5.

With the ratio setting of the thickness of first support rib 113's thickness and the wall 115's of boundary beam 11 thickness in reasonable within range, on the one hand, can reduce because of the ratio is too big, first support rib 113 can't guide when the battery 100 that 113 thicknesses of first support rib lead to receives the yawing force and burst and contract, the not good risk of the difficult energy-absorbing effect of 116 compression of the district that bursts, on the other hand, can reduce because of the ratio undersize, 113 thicknesses of first support rib undersize boundary beam 11 is yielding, the unstable risk of battery 100 carry.

According to some embodiments of the present application, referring to fig. 3 and 4, the first support rib 113 is provided in plurality, and the plurality of first support ribs 113 are provided at intervals.

The plurality of first support ribs 113 may be parallel/non-parallel.

The thicknesses of the plurality of first support ribs 113 may be the same/different.

The angle between the plane of each first support rib 113 and the thickness direction of the two opposing wall portions 115 may be the same/different.

With such a design, when the battery 100 is subjected to a lateral force, the range of the crush zone 116 is expanded, the transmission time of energy generated by the lateral force is prolonged, and the energy absorption capability of the crush zone 116 is improved.

According to some embodiments of the present application, referring to fig. 3 and 4, the second support rib 114 is disposed inside the edge beam 11, the second support rib 114 is connected between two opposite wall portions 115 of the edge beam 11, the second support rib 114 is located outside the crumple zone 116, and the thickness of the second support rib 114 is greater than that of the first support rib 113.

The second support rib 114 may be one or more.

Due to the design, the first support rib 113 is easier to deform than the second support rib 114, and when the battery 100 is subjected to a lateral force, the crumple zone 116 deforms before other areas of the side beam 11, so that most of energy generated by the lateral force is absorbed by the crumple zone 116, and the possibility of excessive energy being transmitted to the battery 100 is reduced.

According to some embodiments of the present application, referring to fig. 5 and 6, the second support rib 114 is provided in plurality, and the plurality of second support ribs 114 are provided at intervals.

The plurality of second support ribs 114 may be parallel/non-parallel.

The thicknesses of the plurality of second support ribs 114 may be the same/different.

The angle between the plane of each second support rib 114 and the thickness direction of the two opposing wall portions 115 may be the same/different.

With such a design, the structural strength of the edge beam 11 is improved.

According to some embodiments of the present application, referring to fig. 2 and 3, the boundary beam 11 includes a first beam 111 and a second beam 112, the first beam 111 is used to define an inner space of the box 10, the second beam 112 is disposed outside the first beam 111, a mounting hole is disposed on the second beam 112, and the crush zone 116 is located on the second beam 112.

The first beams 111 define an inner space of the case 10 for accommodating the battery modules/cells, and the second beams 112 are located outside the inner space.

The first beam 111 and the second beam 112 may form an included angle therebetween, for example, the included angle between the first beam 111 and the second beam 112 may be an acute angle or a right angle or an obtuse angle.

The bottom surface of the first beam 111 may be at a distance or coplanar with the bottom surface of the second beam 112.

The first beam 111 and the second beam 112 of the edge beam 11 may be integrally formed, or the first beam 111 and the second beam 112 of the edge beam 11 may be separately processed and then connected and formed by a fastener or by welding.

Referring to fig. 2 and 3, the mounting holes are generally disposed at the end of the second beam 112.

Such a design increases the distance between the interior of the housing 10 of the battery 100 and the crush zone 116, reducing the potential for energy transfer to the interior of the housing 10 of the battery 100.

According to some embodiments of the present application, the boundary beam 11 includes a first beam 111 and a second beam 112, the first beam 111 is used for defining an inner space of the box 10, the second beam 112 is disposed outside the first beam 111, a mounting hole is disposed on the second beam 112, and the crush zone 116 is located on the first beam 111.

It is noted that the crush zone 116 can be located on the first beam 111, on the second beam 112, or on both the first beam 111 and the second beam 112.

With such a design, the arrangement of the crush zone 116 in the side sill 11 is enriched. The crush zone 116 can also be located on the first beam 111 and the second beam 112, which enlarges the range of the crush zone 116, prolongs the transfer time of the energy generated by the lateral force, and improves the energy absorbing ability of the crush zone 116.

According to some embodiments of the present application, there is also provided a battery 100 comprising the case 10 of the battery 100 according to any of the above aspects.

According to some embodiments of the present application, there is also provided an electric device including the battery 100 according to any of the above aspects.

According to some embodiments of the present application, referring to fig. 2 to 4, the present application provides a case 10 for a battery 100, the case 10 includes a side beam 11, the side beam 11 is used for defining a receiving cavity of the case 10 for the battery 100, the side beam 11 is a hollow structure, a crush zone 116 is disposed inside the side beam 11, and the crush zone 116 is configured to deform when an external force is applied.

The boundary beam 11 includes a first beam 111 and a second beam 112, the first beam 111 is used for limiting the inner space of the box 10, the second beam 112 is arranged outside the first beam 111, a mounting hole is arranged on the second beam 112, and the crush zone 116 is located on the second beam 112.

A first supporting rib 113 and a second supporting rib 114 are arranged inside the second beam 112, the first supporting rib 113 is connected between two opposite wall portions 115 of the crumple zone 116, and the first supporting rib 113 is obliquely arranged relative to the two opposite wall portions 115; the second support rib 114 is connected between the two opposing wall portions 115 of the side member 11, the second support rib 114 is located outside the crush zone 116, and the second support rib 114 is closer to the first member 111 than the first support rib 113.

The thickness of the first support rib 113 is smaller than the thickness of the wall portion 115 of the side member 11, and the thickness of the second support rib 114 is larger than the thickness of the first support rib 113.

The first beam 111 is also provided with a plurality of second support ribs 114 arranged at intervals inside.

When the battery 100 is subjected to a lateral force, for example, referring to fig. 3, when the battery 100 is collided by a lateral force from right to left, energy generated by the collision is firstly transmitted to the second beam 112, and when the energy is transmitted to the crumple zone 116 near the first support rib 113, since the first support rib 113 is obliquely arranged and has a small thickness, the first support rib 113 is easily deformed, and the crumple zone 116 near the first support rib 113 is further guided to be compressed and deformed to absorb the energy. The second support rib 114 in the second beam 112 has a large thickness and an opposite inclination direction to the first support rib 113, and may play a role in blocking energy transmission to the extent that energy generated by collision is absorbed in the second beam 112, thereby reducing energy transmitted to the first beam 111 or the inside of the battery 100.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present disclosure, and the present disclosure should be construed as being covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein, but rather to cover all embodiments falling within the scope of the appended claims.

Claims (9)

1. The battery box body is characterized by comprising an edge beam, wherein the edge beam is used for limiting a containing cavity of the battery box body, the edge beam is of a hollow structure, a crumple zone is arranged inside the edge beam, and the crumple zone is configured to deform when external force is applied to the crumple zone;

in the crumple zone, a first support rib is arranged inside the edge beam, the first support rib is connected between two opposite wall parts of the crumple zone, and the first support rib is obliquely arranged relative to the two opposite wall parts;

the included angle between the plane where the first supporting rib is located and the thickness direction of the two opposite wall parts is alpha, and alpha is more than 0 degree and less than or equal to 45 degrees.

2. The box body as claimed in claim 1, wherein the thickness of the first support rib is A, and the thickness of the wall part of the side beam is B, so that A/B is more than or equal to 0.1 and less than or equal to 0.5.

3. The cabinet as claimed in claim 1, wherein the first support rib is provided in plurality, and the plurality of first support ribs are spaced apart from each other.

4. The cabinet as claimed in claim 1, wherein a second support rib is provided inside the side sill, the second support rib is connected between two opposite walls of the side sill, the second support rib is located outside the crumple zone, and the thickness of the second support rib is greater than that of the first support rib.

5. The cabinet as claimed in claim 4, wherein the second support rib is provided in plurality, and the plurality of second support ribs are spaced apart from each other.

6. The box body as claimed in claim 1, wherein the edge beam includes a first beam for defining an inner space of the box body and a second beam disposed at an outer side of the first beam, the second beam having a mounting hole provided thereon, and the crush zone is located at the second beam.

7. The box body of claim 1, wherein the edge beam comprises a first beam and a second beam, the first beam is used for limiting the inner space of the box body, the second beam is arranged on the outer side of the first beam, a mounting hole is arranged on the second beam, and the collapse area is positioned on the first beam.

8. A battery comprising a case according to any one of claims 1 to 7 for housing a battery cell.

9. An electrical device comprising a battery as claimed in claim 8 for providing electrical energy.

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