CN218215517U - Battery and power consumption device - Google Patents

Abstract

The application provides a battery and a power consumption device. The battery includes box and protective member, the box is used for holding and protecting battery module, at least one battery module sets up in the box, protective member sets up at the at least partial outside surface of box, protective member includes at least one bolster, the bolster is used for absorbing the energy that the part acted on the box, the bolster is connected with the surface of box, the bolster can absorb the external energy of acting on the box of part, reduce the damage of external impact to box and the inside battery module of box, the battery life who leads to under the exogenic action and the problem of efficiency reduction have been improved.

Description

Battery and power consumption device

Technical Field

The application relates to the field of batteries, in particular to a battery and a power utilization device.

Background

Energy conservation and emission reduction are the key points of sustainable development of the automobile industry, and electric vehicles become important components of the sustainable development of the automobile industry due to the advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in its development.

However, in practical applications, the battery often fails under the action of external force, and the service life and performance of the battery are reduced.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the present application provides a battery and an electric device that can alleviate the problem of the battery life and the battery performance degradation caused by the external force.

In a first aspect, the present application provides a battery, including a case and a protective member, at least one battery module is disposed in the case, the protective member is disposed on at least a portion of an outer surface of the case, the protective member includes at least one buffer for absorbing a portion of energy acting on the case, and the buffer is connected to an outer surface of the case.

In the technical scheme of this application embodiment, the battery includes box and protective member, and the box is used for holding and protecting battery module, and protective member sets up at the at least partial outside surface of box, and protective member includes at least one bolster, and the bolster can absorb the energy of some external actions on the box, reduces the damage of external impact to box and the inside battery module of box, has improved the battery life and the problem that efficiency reduces that lead to under the exogenic action.

In some embodiments, the box body comprises a top wall and a bottom wall which are oppositely arranged along the first direction, the top wall is used for being hung at a preset position, and the buffer piece is connected to the bottom wall.

In the technical scheme of this application embodiment, in practical application, the box diapire receives the chance that external force was strikeed the most, puts in whole car bottom usually like battery among the new energy automobile, in the car in-process of traveling, meets and holds in the palm the end or the wheel rolls the bottom ball that leads to the rubble to lead to and hit all can damage the battery box diapire, connects the bolster in the diapire can be fine improve battery box and battery module because of the impaired problem of external force impact from this

In some embodiments, the buffer member is attached to at least the outer surface of the bottom wall.

The bolster is laminated in the diapire surface among the technical scheme of this application embodiment, and the bolster has the effect of buffering energy-absorbing, and when the diapire received external shock, the bolster can help the diapire to preliminarily absorb some energy, reduces the impact that the diapire received to reach the purpose of protection battery.

In some embodiments, the bumper includes interconnecting first and second portions, the first portion being connected to the bottom wall; the case further includes a side wall connecting the bottom wall and the top wall, and the second portion covers at least a portion of the side wall.

In the technical solutions of the embodiments of the present application, in these embodiments, the second portion covering part of the side wall can increase the protection range of the buffer to the box body, and improve the protection capability of the buffer to the side wall.

In some embodiments, the bumper covers at least the entire bottom wall.

In the technical scheme of this application embodiment, the bolster that covers whole diapire brings more perfect protection effect for the diapire.

In some embodiments, the number of the buffering members is multiple, and the multiple buffering members are distributed at intervals on the bottom wall.

In the technical scheme of this application embodiment, at a plurality of bolster of diapire interval distribution, at the protection battery, reduced manufacturing cost when reducing the battery and receive the impact degree.

In some embodiments, the guard member further includes a first guard, the bumper being connected between the bottom wall and the first guard.

In the technical scheme of the embodiment of the application, the hardness of the first protection plate is high, impact force acts on the first protection plate and is dispersed to the surfaces of the plurality of buffering parts by the first protection plate, the buffering and energy-absorbing effects of the buffering parts are improved, and the protection energy of the buffering parts to the battery is improved; and first guard plate hardness is higher, can play the guard action to the bolster.

In some embodiments, an orthographic area of the first guard is greater than or equal to an orthographic area of the bottom wall in a direction from the bottom wall to the first guard.

In the technical scheme of this application embodiment, along the direction of diapire to first guard plate, the orthographic projection area of first guard plate is more than or equal to the orthographic projection area of diapire, and first guard plate can provide more comprehensive protection to the box.

In some embodiments, the first protective plate has a thickness between 1mm and 10 mm.

In the technical scheme of this application embodiment, the thickness of first guard plate is between 1mm-10mm, prevents promptly that the protective capacities of first guard plate is not enough because first guard plate is too thin, prevents again because first guard plate is too thick, causes first guard plate weight too big, contradicts with the lightweight theory of vehicle.

In some embodiments, the second protection plate is connected to the edge of the first protection plate and extends towards the bottom wall.

In the technical scheme of this application embodiment, the second guard plate is connected in the edge of first guard plate and is extended the shaping towards the diapire, and the second guard plate can supply the guard blind area of first guard plate, has improved the protective capacities of protective member to the box.

In some embodiments, the second fender and the first fender are smoothly transitioned.

In the technical scheme of this application embodiment, second guard plate and first guard plate rounding off connect, reduce the probability of first guard plate and second guard plate junction because of stress cracking.

In some embodiments, the first guard plate has a convex configuration toward the bottom wall and a concave configuration in a direction away from the bottom wall.

In the technical scheme of this application embodiment, first guard plate has the protruding structure of orientation diapire and along the sunk structure who deviates from the diapire direction, and this kind of protruding and sunk structure on the first guard plate has strengthened the elasticity of first guard plate, can take place deformation to a certain extent, and when first guard plate received the impact, protruding and sunk structure can be through the tentatively partial energy of absorption of deformation to improve the protective effect of first guard plate to the battery.

In some embodiments, the length of the buffer member is 5mm-20mm in the direction in which the buffer member is juxtaposed with the case.

In the technical scheme of this application embodiment, the length of bolster is 5mm-20mm, can not cause the cushioning effect of bolster unsatisfactory because of bolster length is short promptly, can not cause box 22 oversize because of bolster 231 overlength yet, and battery 2 energy density is crossed lowly either.

On the other hand, the present application further provides an electric device, which includes the battery in any one of the embodiments of the first aspect, and the battery is used for providing electric energy.

The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly 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. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic structural diagram of a vehicle provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a battery pack according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a battery module according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a battery according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a battery according to another embodiment of the present application;

fig. 6 is a schematic structural diagram of a battery according to yet another embodiment of the present application;

fig. 7 is a schematic structural diagram of a battery according to yet another embodiment of the present application;

fig. 8 is a schematic structural diagram of a battery according to yet another embodiment of the present application;

fig. 9 is a schematic structural diagram of a battery according to yet another embodiment of the present application;

fig. 10 is a schematic structural diagram of a battery according to yet another embodiment of the present application.

The reference numbers in the detailed description are as follows:

1 vehicle, 11 controller, 12 motor;

2 batteries, 21 battery modules, 22 cases, 221 first case parts, 222 second case parts, 23 protective members, 231 buffer members, 2211 top walls, 2221 bottom walls, 231a hardened layers, 231b buffer layers, 232 first parts, 233 second parts, 223 side walls, 234 first protection plates, 235 second protection plates, 234a convex structures and 234b concave structures;

and 3, single batteries.

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.

It should be noted that technical terms or scientific terms used in the embodiments of the present application should be understood as having a common meaning as understood by those skilled in the art to which the embodiments of the present application belong, unless otherwise specified.

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations and positional relationships that are based on the orientations and positional relationships shown in the drawings, and are used only for convenience in describing the embodiments of the present application and for simplicity in description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the embodiments of the present application.

Furthermore, the technical terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

In the description of the embodiments of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; 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.

In the description of the embodiments of the present application, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacting the first and second features, or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

At present, the application of the power battery is more and more extensive from the development of market situation. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles and the like, and a plurality of fields such as military equipment and aerospace. With the continuous expansion of the application field of the power battery, the market demand is also continuously expanding.

Reference to a battery in embodiments of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in the present application may include a battery module or a battery pack, etc. Batteries generally include a case for enclosing one or more battery cells. The box can avoid liquid or other foreign matters to influence the charging or discharging of battery monomer.

The applicant has noticed that the problem of a reduction in the lifetime and efficiency of some batteries arises.

In order to alleviate the problem of the reduction of the service life and the efficiency of the battery, the applicant researches and discovers that in order to improve the energy density and save the cost, a plurality of battery modules are connected in parallel or in series and then are concentrated into a box body, namely a battery or a battery pack. When in actual use, the box can receive the impact that comes from the external world, collide with etc. unavoidably, this kind of impact that comes from the external world partly can transmit the battery module in the box through the box on, if the box can not weaken the external impact strength to battery module as much as possible, the box can not play sufficient guard action to battery module, the battery module of box inside probably receives the damage, causes such as the incident such as short circuit, weeping, catching fire, causes the decline of battery life and performance.

Based on the above considerations, in order to solve the problem of cell life and efficiency degradation, the applicant has recognized the need to enhance the protection of the case against the battery module. The applicant designs a battery through intensive research, and the battery comprises a box body and a protection component, wherein at least one battery module is arranged in the box body, the protection component is arranged on at least part of the outer side surface of the box body, the protection component comprises at least one buffer part, the buffer part is used for absorbing part of energy acting on the box body, and the buffer part is connected with the outer surface of the box body. The box is used for holding battery module, and the protective member setting includes at least one bolster in the at least partial outside surface of box, and the bolster can absorb the energy of some external actions on the box, reduces external impact and to the damage of box and the inside battery module of box, has improved the battery life and the problem that efficiency reduces that lead to under the exogenic action.

The technical scheme described in the embodiment of the application is suitable for the battery and the electric device using the battery.

The powered device may be a vehicle, a boat, a spacecraft, a motorized toy, a power tool, and the like. The vehicle can be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle and the like; spacecraft include aircraft, rockets, space shuttles, spacecraft, and the like; the electric power tools include metal cutting electric power tools, grinding electric power tools, assembly electric power tools, and electric power tools for railways, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, electric impact drills, concrete vibrators, and electric planers. The embodiment of the present application does not specifically limit the above power utilization device.

It should be understood that the technical solutions described in the embodiments of the present application are not limited to be applied to the above-described battery and electric equipment, but may be applied to all batteries including a box and electric equipment using the battery.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1 according to some embodiments of the present disclosure. The vehicle 1 can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range-extended automobile and the like. The interior of the vehicle 1 is provided with a battery 2, and the battery 2 may be provided at the bottom or the head or the tail of the vehicle 1. The battery 2 may be used for power supply of the vehicle 1, and for example, the battery 2 may serve as an operation power source of the vehicle 1. The vehicle 1 may further comprise a controller 11 and a motor 12, the controller 11 being adapted to control the battery 2 to supply power to the motor 12, e.g. for start-up, navigation and operational power demands while driving of the vehicle 1.

In some embodiments of the present application, the battery 2 may be used not only as an operating power source of the vehicle 1, but also as a driving power source of the vehicle 1, instead of or in part of fuel or natural gas, to provide driving power for the vehicle 1.

In order to meet different power requirements, the battery 2 may include a plurality of battery cells, which are the smallest units constituting a battery module or a battery pack. A plurality of battery cells may be connected in series and/or in parallel via electrode terminals to be applied to various applications. The battery referred to in the present application includes a battery module or a battery pack. The plurality of battery cells can be connected in series or in parallel or in series-parallel, and the series-parallel refers to the mixture of series connection and parallel connection. In the embodiment of the application, a plurality of battery cells can directly form a battery pack, or a battery module 21 can be formed first, and then the battery module 21 forms the battery pack.

Fig. 2 shows a schematic structural diagram of the battery 2 according to an embodiment of the present application.

As shown in fig. 2, the battery includes a case 22 and a battery cell (not shown), which is accommodated in the case 22.

The box 22 may be a single cuboid, a cylinder, a sphere, or other simple three-dimensional structure, or may be a complex three-dimensional structure formed by combining cuboid, cylinder, or sphere, which is not limited in the embodiment of the present application. The material of the box 22 may be an alloy material such as an aluminum alloy and an iron alloy, a polymer material such as polycarbonate and polyisocyanurate foam, or a composite material such as glass fiber and epoxy resin, which is not limited in the embodiment of the present application.

The case 22 is used to accommodate the battery cells, and the case 22 may have various structures. In some embodiments, the casing 22 may include a first casing portion 221 and a second casing portion 222, the first casing portion 221 and the second casing portion 222 cover each other, and the first casing portion 221 and the second casing portion 222 together define a receiving space for receiving the battery cells. The second casing part 222 may be a hollow structure with one open end, the first casing part 221 is a plate-shaped structure, and the first casing part 221 covers the open side of the second casing part 222 to form the casing 22 with an accommodating space; the first casing part 221 and the second casing part 222 may be hollow structures with one side opened, and the opening side of the first casing part 221 is covered on the opening side of the second casing part 222 to form the casing 22 with the accommodating space. Of course, the first and second casing portions 221, 222 may be various shapes, such as a cylinder, a rectangular parallelepiped, or the like.

In order to improve the sealing property after the first casing portion 221 and the second casing portion 222 are connected, a sealing member, such as a sealant or a gasket, may be provided between the first casing portion 221 and the second casing portion 222.

If the first casing portion 221 covers the top of the second casing portion 222, the first casing portion 221 may also be referred to as an upper casing, and the second casing portion 222 may also be referred to as a lower casing.

In the battery 2, one or more battery cells may be provided. If the number of the battery monomers is multiple, the multiple battery monomers can be connected in series or in parallel or in series-parallel, and the series-parallel refers to that the multiple battery monomers are connected in series or in parallel. The plurality of battery cells can be directly connected in series or in parallel or in series-parallel, and the whole formed by the plurality of battery cells is accommodated in the box body 22; of course, a plurality of battery cells may be connected in series or in parallel or in series-parallel to form the battery module 21, and a plurality of battery modules 21 may be connected in series or in parallel or in series-parallel to form a whole and accommodated in the box 22.

Fig. 3 shows a schematic structural diagram of the battery module 21 according to an embodiment of the present application.

In some embodiments, as shown in fig. 3, there are a plurality of battery cells 3, and the plurality of battery cells 3 are connected in series or in parallel or in series-parallel to form the battery module 21. A plurality of battery modules 21 are connected in series or in parallel or in series-parallel to form a whole, and are accommodated in a case (not shown).

The plurality of battery cells 3 in the battery module 21 may be electrically connected to each other through a bus member to realize parallel connection, series connection, or parallel connection of the plurality of battery cells 3 in the battery module 21.

In this application, the battery cells 3 may include a lithium ion battery cell, a sodium ion battery cell, a magnesium ion battery cell, or the like, which is not limited in this application. The battery cells 3 may be cylindrical, flat, rectangular or other shapes, which is not limited in the embodiments of the present application. The battery cells 3 are generally divided into three types in an encapsulated manner: the single battery of cylindricality battery, square battery monomer and laminate polymer battery monomer, this application embodiment is also not limited to this. However, for the sake of brevity, the following embodiments are all described by taking a square battery cell as an example.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a battery 2 according to an embodiment of the present disclosure.

In some alternative embodiments, as shown in fig. 3 and 4, the battery 2 includes a case 22 and a protective member 23, the at least one battery module 21 is disposed in the case 22, the protective member 23 is disposed on at least a portion of an outer side surface of the case 22, the protective member 23 includes at least one buffer 231, the buffer 231 is used for absorbing a portion of energy applied to the case 22, and the buffer 231 is connected to an outer surface of the case 22.

The plurality of battery modules 21 are integrated in the case 22, the energy density of the battery 2 is improved by the integrally provided battery modules 21, and the case 22 can protect the battery modules 21. When the battery 2 is subjected to external impact, such as bottom support and gravel splashing during the running of the electric vehicle, the battery module 21 inside the case 22 cannot be sufficiently protected only by the structure of the case 22 itself. Therefore, the protective member 23 is disposed on the outer surface of the case, the protective member 23 includes the buffer 231, the buffer 231 has a structure with an energy absorbing function, when the external force impacts, the external force first acts on the buffer 231 of the protective member 23, and the buffer 231 first absorbs or disperses a part of the energy through deformation or other methods, so that the energy acting on the case 22 is reduced, and the battery module 21 in the case 22 can be better protected.

Alternatively, the shielding member 23 is provided on the entire outer side surface of the case 22.

Optionally, the buffer 231 may be connected to the box 22 by bonding, clipping, or bolting.

Alternatively, the shielding member 23 is detachably coupled to the case 22, and the shielding member 23 can be separately replaced after the case 22 is impacted from the outside.

In the battery 2 provided by the embodiment of the present application, the battery 2 includes a case 22 and a protective member 23, the case 22 is used for accommodating and protecting the battery module 21, the protective member 23 is disposed on at least a part of an outer side surface of the case 22, the protective member 23 includes at least one buffer 231, and the buffer 231 can absorb a part of energy applied to the case 22 from the outside, so as to reduce damage to the case 22 and the battery module 21 inside the case 22 from external impact, and improve the problem of reduction in the life and performance of the battery 2 caused by external force.

In some alternative embodiments, as shown in fig. 4, the box 22 includes a top wall 2211 and a bottom wall 2221 oppositely arranged along the first direction X, the top wall 2211 is used for being hung at a preset position, and the buffer member 231 is connected to the bottom wall 2221.

The bottom wall 2221 refers to the wall surface most likely to be impacted by an external force among all the wall surfaces of the case 22. In general, the bottom wall 2221 refers to a plane of the second case portion (not shown) opposite to the opening side, and the top wall 2211 refers to a plane of the first case portion (not shown) opposite to the opening side.

Optionally, the first direction is an X direction.

In these embodiments, in practical applications, the bottom wall 2221 of the box body 22 is most likely to be impacted by external force, for example, in a new energy automobile, the battery is usually placed at the bottom of the whole automobile, and during the running of the automobile, the bottom wall 2221 of the box body 22 of the battery 2 is damaged by bottom ball impact caused by crushed stones due to backing or rolling of wheels, so that the problem that the box body 22 of the battery 2 and the battery module (not shown in the figure) are damaged by external force impact can be well solved by connecting the buffer member 231 to the bottom wall 2221.

In some alternative embodiments, as shown in fig. 4, the buffer 231 fits at least on the outer surface of the bottom wall 2221.

Alternatively, the buffer 231 may be made of natural rubber, synthetic rubber, polyurethane foam, EPS foam, or the like.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a battery 2 according to another embodiment of the present disclosure.

Alternatively, the buffer 231 may be a multi-layered structure. Optionally, the buffer 231 includes a hardened layer 231a and a buffer layer 231b, the hardened layer 231a has higher rigidity than the buffer layer 231b, and the hardened layer 231a plays a role in protecting the buffer 231; the buffer layer 231b has elasticity higher than that of the hardened layer 231a, and absorbs energy mainly by elastic deformation of the buffer layer 231 b.

Optionally, the buffer member 231 is a flexible material layer having a cavity, and the cavity is filled with a non-newtonian fluid, so that when the buffer member 231 is impacted, the non-newtonian fluid is quickly hardened, the impact force is dispersed, and the degree of impact on the bottom wall 2221 is reduced, thereby achieving the purpose of protecting the battery 2.

In these embodiments, the buffer member 231 is attached to the outer surface of the bottom wall 2221, and the buffer member 231 has a function of buffering and absorbing energy, so that when the bottom wall 2221 is impacted by an external force, the buffer member 231 can help the bottom wall 2221 to primarily absorb a part of energy, and reduce the impact on the bottom wall 2221, thereby achieving the purpose of protecting the battery 2.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a battery 2 according to another embodiment of the present disclosure.

In some alternative embodiments, as shown in fig. 6, the buffer 231 includes a first portion 232 and a second portion 233 connected to each other, the first portion 232 being connected to the bottom wall 2221; the housing 22 further includes a side wall 223 connecting the bottom wall 2221 and the top wall 2211, and the second portion 233 covers at least a portion of the side wall 223.

Optionally, the first portion 232 covers the entire bottom wall 2221.

Optionally, in the first direction X, the height of the second portion 233 is not less than 10% of the height of the sidewall 223.

Optionally, the first portion 232 and the second portion 233 are made of the same material.

In these embodiments, the second portion 233 covering the portion of the sidewall 223 can increase the protection range of the buffer member 231 for the box 22, and improve the protection capability of the buffer member 231 for the sidewall 223.

In some alternative embodiments, as shown in fig. 6, the buffer 231 covers at least the entire bottom wall 2221.

Optionally, the buffering member 231 is a whole, and the buffering member 231 integrally provided has high structural strength.

In these embodiments, the buffer 231 covering the entire bottom wall 2221 brings about a more complete protective effect for the bottom wall 2221.

As shown in fig. 7, fig. 7 is a schematic structural diagram of a battery 2 according to another embodiment of the present application.

In some alternative embodiments, as shown in fig. 7, the number of the buffering members 231 is multiple, and the multiple buffering members 231 are spaced apart from each other on the bottom wall 2221.

Alternatively, the buffer 231 may be a cylinder or a sphere with a part of the surface being a plane.

When facing bottom walls 2221 of different shapes and sizes, the relevant person can decide the number and density of the placement of the buffer members 231 at his or her discretion, which improves the compatibility of the buffer members 231.

Optionally, in the first direction X, an orthographic projection area of the buffer 231 on the bottom wall 2221 is greater than or equal to half of an area of the bottom wall 2221.

In these embodiments, the plurality of buffers 231 spaced apart from the bottom wall 2221 reduces the production cost while increasing the protection of the battery 2.

Referring to fig. 8, fig. 8 is a schematic structural diagram of a battery 2 according to another embodiment of the present disclosure.

In some alternative embodiments, the guard member 23 further includes a first prevention plate 234, and the buffer member 231 is connected between the bottom wall 2221 and the first prevention plate 234.

Optionally, the first protection plate 234 is made of metal.

Alternatively, the buffer member 231 is a spring extending along the first direction X, and one end of the spring is connected to the bottom wall 2221 and the other end is connected to the first shielding plate 234.

In these embodiments, the first protection plate 234 has higher hardness, and the impact force acting on the first protection plate 234 is dispersed to the surfaces of the plurality of buffering members 231 by the first protection plate 234, so as to improve the buffering and energy-absorbing effects of the buffering members 231 and improve the protection effects of the buffering members 231 on the battery 2; and the first shielding plate 234 has a high hardness, and can protect the buffer member 231.

The first protection plate 234 can disperse a part of energy before the buffer member 231, the first protection plate 234 can better protect the battery 2, and meanwhile, the first protection plate 234 can also protect the buffer member 231, so that damage to the buffer member 231 is reduced.

In some alternative embodiments, as shown in fig. 8, the orthographic area of the first shield 234 is greater than or equal to the orthographic area of the bottom wall 2221 in the direction from the bottom wall 2221 to the first shield 234.

In the direction from the bottom wall 2221 to the first shield plate 234, the bottom wall 2221 is within the orthographic projection of the first shield plate 234 or the bottom wall 2221 coincides with the orthographic projection of the first shield plate 234.

In these embodiments, the first shield 234 has an orthographic area greater than or equal to that of the bottom wall 2221 in the direction from the bottom wall 2221 to the first shield 234, and the first shield 234 can provide more complete protection for the tank body 22.

In some alternative embodiments, as shown in FIG. 8, the thickness L1 of the first guard 234 is between 1mm-10 mm.

In these embodiments, the thickness L1 of the first shield plate 234 is between 1mm and 10mm, which prevents the first shield plate 234 from being insufficiently protected due to the first shield plate 234 being too thin, and prevents the first shield plate 234 from being excessively heavy due to the first shield plate 234 being too thick, contrary to the concept of light weight of the vehicle.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a battery 2 according to another embodiment of the present application.

In some alternative embodiments, as shown in fig. 9, a second protection plate 235 is further included, which is connected to an edge of the first protection plate 234 and extends toward the bottom wall 2221.

In some cases, such as an electric vehicle in driving, some of the gravels crushed by the wheels may jump over the first shielding plate 234 from the side of the first shielding plate and impact the bottom wall 2221, and the space between the first shielding plate 234 and the bottom wall 2221 is a dead zone of the first shielding plate 234, so that the second shielding plate 235 is provided on the first shielding plate 234, and the second shielding plate 235 is connected to the edge of the first shielding plate 234 and is extended toward the bottom wall 2221, thereby improving the problem that the external impact impacts the bottom wall 2221 through the dead zone of the first shielding plate 234.

The orthographic projection of the second protection plate 235 in the first direction X does not coincide with the bottom wall 2221, and the second protection plate 235 is prevented from contacting the bottom wall 2221 in the first direction X.

Optionally, the second protection plate 235 and the first protection plate 234 are integrally formed.

Optionally, the second guard 235 is welded to the first guard 234.

Optionally, the second protection plate 235 is made of the same material as the first protection plate 234.

In these embodiments, the second protection plate 235 is connected to an edge of the first protection plate 234 and extends toward the bottom wall 2221, and the second protection plate 235 may supplement the dead zone of the first protection plate 234, thereby improving the protection capability of the protection member 23 for the tank 22.

In some alternative embodiments, as shown in fig. 9, the second protection plate 235 and the first protection plate 234 are smoothly transitionally connected.

The second protection plate 235 and the first protection plate 234 are connected in a smooth transition manner, which means that the connection between the second protection plate 235 and the first protection plate 234 may be rounded. The second protection plate 235 and the first protection plate 234 can retain partial stress in the component in the machining process, stress is concentrated at the joint of the second protection plate 235 and the first protection plate 234, and the fillet connection can disperse the stress along the normal direction of the circular arc, so that the problem that the joint of the second protection plate 235 and the first protection plate 234 cracks due to the influence of the stress is solved.

In these embodiments, the second protection plate 235 and the first protection plate 234 are smoothly connected, so that the probability of stress cracking at the connection position of the first protection plate 234 and the second protection plate 235 is reduced.

Referring to fig. 10, fig. 10 is a schematic structural diagram of a battery according to another embodiment of the present application.

In some alternative embodiments, as shown in fig. 10, the first guard 234 has a raised structure 234a facing the bottom wall 2221 and a recessed structure 234b in a direction away from the bottom wall 2221.

The first prevention plate 234 has a convex structure 234a toward the bottom wall 2221 and a concave structure 234b in a direction away from the bottom wall 2221, which means that the first prevention plate 234 has a continuous corrugated plate structure formed with a plurality of alternately occurring peaks and valleys, the peaks referring to the convex structure 234a and the valleys referring to the concave structure 234b.

In these embodiments, the first guard 234 has a convex structure 234a facing the bottom wall 2221 and a concave structure 234b facing away from the bottom wall 2221, and such convex and concave structures 234a and 234b on the first guard 234 enhance the elasticity of the first guard 234 and can be deformed to some extent, and when the first guard 234 is impacted, the convex and concave structures 234a and 234b can primarily absorb a part of energy through deformation, thereby improving the protection effect of the first guard 234 on the battery 2.

In some alternative embodiments, as shown in fig. 10, the length L2 of the buffer member 231 is 5mm-20mm in the direction in which the buffer member 231 is juxtaposed with the case 22.

In these embodiments, the length L2 of the buffer member 231 is 5mm to 20mm, which means that the buffer effect of the buffer member 231 is not ideal due to too short length of the buffer member 231, and the energy density of the battery 2 is not too low due to too large volume of the case 22 caused by too long length of the buffer member 231.

According to some embodiments of the present application, there is also provided an electric device, including the battery according to any of the above aspects, and the battery is used for supplying electric energy to the electric device.

The powered device may be any of the aforementioned battery-powered devices or systems.

The power consumption device provided by the embodiment of the application has the same technical effect due to the adoption of the battery provided by the embodiment of the application, and the details are not repeated.

According to some embodiments of the present application, as shown in fig. 1 to 10, the present application provides a battery 2, including a case 22 and a protective member 23, wherein at least one battery module 21 is disposed in the case 22, the case 22 includes a top wall 2211 and a bottom wall 2221 oppositely disposed along a first direction X, the top wall 2211 is configured to be hung at a preset position, a buffer 231 is connected to the bottom wall 2221, and a length L2 of the buffer 231 is 5mm to 20mm; the protection member 23 includes a buffer member 231, the buffer member 231 is connected to the bottom wall 2221, the buffer member 231 covers the entire bottom wall 2221, the protection member 23 further includes a first protection plate 234, the buffer member 231 is connected between the bottom wall 2221 and the first protection plate 234, the thickness L1 of the first protection plate 234 is between 1mm and 10mm, the edge of the first protection plate 234 is connected to a second protection plate 235 extending and forming towards the bottom wall 2221, the first protection plate 234 and the second protection plate 235 are smoothly connected, and the first protection plate 234 has a convex structure 234a towards the bottom wall 2221 and a concave structure 234b along the direction deviating from the bottom wall 2221.

In these embodiments, the battery 2 includes a case 22 and a protective member 23, the case 22 is used for accommodating and protecting the battery module 21, the protective member 23 is disposed on at least a portion of an outer surface of the case 22, the protective member 23 includes at least one buffer 231, and the buffer 231 can absorb a portion of energy applied to the case 22 from the outside, so as to reduce damage to the case 22 and the battery module 21 inside the case 22 from external impacts, and improve the problem of the reduction in the life and performance of the battery 2 caused by external forces.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting 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 is to cover all embodiments that may fall within the scope of the appended claims.

Claims (14)

1. A battery, comprising:

the battery pack comprises a box body, at least one battery module and a battery module, wherein the box body is internally provided with the at least one battery module;

the protective component is arranged on at least part of the outer side surface of the box body and comprises at least one buffer piece, the buffer piece is used for absorbing part of energy acting on the box body, and the buffer piece is connected with the outer surface of the box body.

2. The battery of claim 1, wherein the case includes a top wall and a bottom wall opposite to each other in the first direction, the top wall is configured to be hung at a predetermined position, and the buffer member is connected to the bottom wall.

3. The battery of claim 2, wherein the buffer member is attached to at least an outer surface of the bottom wall.

4. The battery according to claim 3,

the bumper includes a first portion and a second portion connected to each other, the first portion being connected to the bottom wall;

the box body further comprises a side wall connecting the bottom wall and the top wall, and the second part covers at least part of the side wall.

5. The battery of claim 3, wherein the bumper covers at least the entire bottom wall.

6. The battery of claim 3, wherein the number of the buffering members is plural, and the buffering members are spaced apart from each other on the bottom wall.

7. The battery of claim 2, wherein the guard member further comprises a first guard plate, the bumper being connected between the bottom wall and the first guard plate.

8. The battery of claim 7, wherein an orthographic area of the first guard plate is greater than or equal to an orthographic area of the bottom wall in a direction from the bottom wall to the first guard plate.

9. The battery of claim 7, wherein the first protective plate has a thickness of between 1mm and 10 mm.

10. The battery of claim 8, further comprising a second protective plate connected to an edge of the first protective plate and formed to extend toward the bottom wall.

11. The battery of claim 10, wherein the second protection plate and the first protection plate are smoothly transitionally connected.

12. The battery of claim 7, wherein the first guard plate has a raised configuration toward the bottom wall and a recessed configuration in a direction away from the bottom wall.

13. The battery according to claim 1, wherein the length of the buffer member is 5mm to 20mm in a direction in which the buffer member is juxtaposed with the case.

14. An electric device, comprising: the battery of any one of claims 1 to 13, for providing electrical energy.

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