CN216354489U - Battery box, battery and consumer - Google Patents

Abstract

The utility model relates to a battery box, a battery and electric equipment, wherein the battery box comprises a plurality of fixedly connected frames, sealing elements, a bottom plate and a cover plate, the end parts of the frames are at least partially overlapped, the end part of one frame of two adjacent frames is provided with an accommodating groove which is inwards sunken and opened, and the end part of the other frame of the two adjacent frames is covered on the opening to seal the opening; the sealing element is contained in the containing groove, the bottom plate is covered on the bottom side of each frame, the cover plate is covered on the top side of each frame, and the cover plate, the bottom plate and each frame enclose a cavity for containing a battery monomer. A battery comprises the battery box body and a battery monomer, wherein the battery monomer is accommodated in the cavity. An electric device comprises the battery, and the battery is used for providing electric energy. Above-mentioned battery box, battery and consumer, the tip of two adjacent frames at least part overlap joint in the battery box, and it has the sealing member to fill in the overlap joint department, can satisfy structural strength and leakproofness's requirement simultaneously.

Description

Battery box, battery and consumer

Technical Field

The utility model relates to the technical field of power batteries, in particular to a battery box body, a battery and electric equipment.

Background

The battery includes the battery box and holds a plurality of battery monomer in the battery box, for the overall structure intensity of guarantee battery package, realizes the safe of car and traveles, is located the structural strength of the outer battery box of a plurality of battery monomer and also is especially important, and the fail safe nature of battery is directly influenced again to the reliability of the mechanical strength of battery box.

The welding seam length among the current battery box is long and the welding volume is great, and the welding heat input leads to the deflection of finished product battery box great easily, and the in-process that produces the shock is gone at the car simultaneously, leads to welded welding seam department to break off easily or split, finally influences the quality of product, can't satisfy battery box structural strength and leakproofness requirement.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a battery case, a battery, and an electric device, which are directed to the problem of poor structural strength and sealing property of the conventional battery case.

A battery box body comprises a plurality of frames, sealing elements, a bottom plate and a cover plate, wherein the end parts of the frames are at least partially overlapped, one frame end part of two adjacent frames is provided with an inward-concave and open accommodating groove, and the other frame end part of the two adjacent frames is covered on the opening to seal the opening; the sealing element is contained in the containing groove, the bottom plate is covered on the bottom side of each frame, the cover plate is covered on the top side of each frame, and the cover plate, the bottom plate and each frame enclose a cavity for containing a battery monomer. The end parts of the two adjacent frames can be overlapped at least partially, the sealing pieces are filled at the overlapping positions of the two frames, the two frames are firmly connected, the sealing performance of the overlapping positions is improved, the structure is simple, safety and reliability are achieved, and the requirement for structural strength and sealing performance of the battery box body can be met.

In one embodiment, the frame comprises side plates and end plates which are connected approximately vertically, the end plates are sunken inwards relative to the edges of the side plates and define a containing groove with the side plates, and the end parts of the side plates in each frame are at least partially overlapped. In the embodiment, the containing grooves are formed in the end portions of the frames, and the end portions of the side plates in the frames are at least partially overlapped to seal openings of the containing grooves, so that the whole battery box body is compact in structure and beneficial to improvement of structural strength.

In one embodiment, the sealing member is a sealant. Through this setting, set up sealed glue in the holding tank, can guarantee the leakproofness between frame and the frame betterly.

In one embodiment, the seal is a gasket. Through this setting, set up sealed the pad in the holding tank, can guarantee the leakproofness between frame and the frame betterly.

In one embodiment, the number of the sealing gaskets is one, and the size of the sealing gasket is equal to that of the accommodating groove. Through this setting, only need with sealed the pad assembly in the holding tank of single, carry on the frame again can, do benefit to and simplify the assembly step, improve assembly efficiency.

In one embodiment, the number of the sealing gaskets is at least two, the size of the sealing gasket is smaller than that of the accommodating groove, and the sealing gaskets are arranged in the accommodating groove at intervals. Through this setting, can lay sealed the pad in the holding tank according to actual demand, sealed mode of setting up of pad is more nimble, can nimble adaptation not holding tank of unidimensional and shape, and the suitability is wider.

In one embodiment, the frame further comprises a fastener, and the fastener is arranged through the side plate in one frame and the end plate in the other frame so as to fixedly connect the end parts of the two adjacent frames. Through this setting, the mode that the connection between the adjacent frame is connected through the fastener is realized, enables battery box and satisfies structural strength and leakproofness requirement under the prerequisite of not welded.

In one embodiment, the overlapping parts of the side plates in two adjacent frames are fixedly connected by gluing. Through this setting, the mode that the connection between the adjacent frame is connected through the fastener is realized, enables battery box and satisfies structural strength and leakproofness requirement under the prerequisite of not welded.

In one embodiment, the overlapping parts of the side plates in two adjacent frames are fixedly connected by welding. Through this setting, sealed the sealed pad that passes through holding in the holding tank between the adjacent frame realizes, and the connection between the adjacent frame is realized through the welding mode, enables the battery box and satisfies structural strength and leakproofness requirement under the prerequisite that reduces welding volume and welding seam length by a wide margin.

A battery comprises a battery monomer and the battery box body, wherein the battery monomer is accommodated in a cavity. The battery has the advantages that the structural strength and the sealing performance of the battery box body are good, and the single batteries contained in the battery box body can be well protected.

An electric device comprises the battery, and the battery is used for providing electric energy. The electric equipment has good battery safety.

Drawings

FIG. 1 is a schematic diagram of an embodiment of an electrical consumer;

FIG. 2 is a schematic diagram of a battery according to an embodiment;

fig. 3 is an exploded view of the battery shown in fig. 2;

fig. 4 is an exploded view of a battery case in the battery shown in fig. 2;

FIG. 5 is an enlarged view of a portion A of the battery case of FIG. 4;

fig. 6 is an assembled view of a battery case in the battery shown in fig. 2.

Reference numerals:

10. a battery case; 20. a battery cell; 30. a battery; 40. a vehicle; 41. a controller; 42. a motor; 100. a frame; 101. accommodating grooves; 110. a side plate; 111. a first hole; 112. a second hole; 120. an end plate; 200. a seal member; 300. a base plate; 400. a cover plate; 500. a cavity; 600. a fastener.

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 "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

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.

With the popularization and the promotion of new energy automobiles, the safety and the reliability of the new energy automobiles increasingly attract attention of people. The power battery is a rechargeable battery, is a power source of the new energy automobile, and is widely applied to the field of the new energy automobile.

The battery comprises a battery box body and a battery monomer accommodated in the battery box body, and in order to guarantee the overall structural strength of the battery and realize the safe driving of an automobile, the structural strength of the battery box body positioned outside the battery monomer is also particularly important, and the reliability of the mechanical strength of the battery box body directly influences the safe reliability of the battery.

At present, the battery box body is mostly processed by casting, metal plates and section bar integration. Although the casting technology is mature and the cost is low, the casting process greatly increases the weight of the whole battery box body, and further increases the energy consumption of the automobile; the sheet metal technology improves the weight defect of the battery box in the casting process, but the assembly process is complex, and the sealing design of the battery box is complex; the aluminum profile integration technology improves the defects of the aluminum profile integration technology and the battery box body, but the cost is high, the space utilization rate of the battery box body is not high, the later maintenance cost is high, and the aluminum profile integration technology cannot be widely applied and popularized.

Based on the problems of poor structural strength and poor sealing performance of the battery box body, some schemes provide improved designs for the structure of the battery box body. For example, the frame of the battery case is directly welded to the frame of the battery case by adding a reinforcing plate to the frame of the battery case. The welding seam length in the whole battery box is long and the welding volume is great, and the welding heat input is big easily to lead to the deflection of finished product battery box great, and at the in-process that the car was gone and is produced the shock simultaneously, leads to welded welding seam department to break off easily or split, has finally influenced the quality of product and can't make the product satisfy the leakproofness requirement of IP67 standard. Therefore, how to satisfy the requirement of sealing performance while improving the structural strength of the battery box body is a problem which is urgently needed to be solved at present.

It should be noted that the IP67 standard refers to a protection safety level, which defines the protection capability of an interface against liquid and solid particles. In the present embodiment, it means that the safety level of the battery box at least achieves the protection against dust inhalation (i.e. preventing dust contact or infiltration as a whole), and the protection is short-term soaking (i.e. preventing soaking as a whole).

Based on the consideration, the inventor designs a battery box body in the battery through deep research, the battery box body is simple in structure, safe and reliable, and the requirement on sealing performance is met while the structural strength of the box body is improved.

It should be noted that, in addition to the above-mentioned single battery cell, the battery case may further include other components such as an electrode terminal, a pressure relief mechanism for relieving internal pressure when the internal pressure or temperature of the single battery cell reaches a threshold value, a heat dissipation component, and an insulating member for electrically connecting the internal connection component of the battery case and the battery case, where the insulating member may be plastic, rubber, and the like.

The battery cell disclosed in the present application may be used in, but not limited to, an electric device such as a vehicle, a ship, or an aircraft. The power supply system who possesses this consumer of constitution such as battery monomer, battery that this application disclosed can be used, like this, is favorable to alleviating and automatically regulated electric core bulging force worsens, and supplementary electrolyte consumes, promotes the stability and the battery life-span of battery performance.

In the present application, the battery cell may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, a magnesium ion battery, or the like, which is not limited in the embodiments of the present application. The battery cell may be a cylinder, a flat body, a rectangular parallelepiped, or other shapes, which is not limited in the embodiments of the present application. The battery cells are generally divided into three types in an encapsulation manner: the cylindrical battery monomer, the square battery monomer and the soft package battery monomer are not limited in the embodiment of the application.

The battery monomer comprises an electrode assembly and electrolyte, wherein the electrode assembly comprises a positive plate, a negative plate and an isolating membrane. The battery cell mainly depends on metal ions moving between the positive plate and the negative plate to work. The positive plate comprises a positive current collector and a positive active substance layer, wherein the positive active substance layer is coated on the surface of the positive current collector, the current collector which is not coated with the positive active substance layer protrudes out of the current collector which is coated with the positive active substance layer, and the current collector which is not coated with the positive active substance layer is used as a positive electrode lug. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate, or the like. The negative pole piece includes negative current collector and negative pole active substance layer, and the negative pole active substance layer coats in the surface of negative current collector, and the mass flow body protrusion in the mass flow body of coating the negative pole active substance layer of uncoated negative pole active substance layer, the mass flow body of uncoated negative pole active substance layer is as negative pole utmost point ear. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. In order to ensure that the fuse is not fused when a large current is passed, the number of the positive electrode tabs is multiple and the positive electrode tabs are stacked together, and the number of the negative electrode tabs is multiple and the negative electrode tabs are stacked together. The material of the isolation film can be polypropylene (PP), Polyethylene (PE) or the like. In addition, the electrode assembly may have a winding structure or a lamination structure, and the embodiment of the present application is not limited thereto.

In this application, a battery 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 pack or the like.

In order to meet different power requirements, a battery may include a plurality of battery cells, wherein the plurality of battery cells may be connected in series or in parallel or in series-parallel, and the series-parallel refers to a mixture of series connection and parallel connection. Alternatively, a plurality of battery cells may be connected in series or in parallel or in series-parallel to form a battery module, and a plurality of battery modules may be connected in series or in parallel or in series-parallel to form a battery. That is, a plurality of battery cells may directly constitute a battery, or a battery module may be first constituted and then a battery may be constituted. The battery is further arranged in the electric equipment to provide electric energy for the electric equipment.

The application provides a power consumption device using a battery as a power supply, wherein the power consumption device can be but is not limited to a mobile phone, a flat panel, a notebook computer, an electric toy, an electric tool, a battery car, an electric automobile, a ship, a spacecraft and the like. The electric toy may include a stationary or mobile electric toy, such as a game machine, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

For convenience of description, the following embodiments will be described by taking a piece of electric equipment according to an embodiment of the present application as an example of a vehicle 40.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 40 according to some embodiments of the present disclosure. The vehicle 40 may be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile may be a pure electric automobile, a hybrid electric automobile, or a range-extended automobile, etc. The interior of the vehicle 40 is provided with the battery 30, and the battery 30 may be provided at the bottom or at the head or tail of the vehicle 40. The battery 30 may be used for power supply of the vehicle 40, for example, the battery 30 may serve as an operation power source of the vehicle 40. The vehicle 40 may also include a controller 41 and a motor 42, the controller 41 being configured to control the battery 30 to power the motor 42, for example, for start-up, navigation, and operational power requirements while the vehicle 40 is traveling.

In some embodiments of the present application, the battery 30 may not only serve as an operating power source for the vehicle 40, but also serve as a driving power source for the vehicle 40, instead of or in part of fuel or natural gas to provide driving power for the vehicle 40.

Referring to fig. 2 to 4, the battery case 10 in one embodiment includes a plurality of frames 100, a sealing member 200, a bottom plate 300, and a cover plate 400. The end portions of the frames 100 are at least partially overlapped, the bottom plate 300 covers the bottom side of each frame 100, the cover plate 400 covers the top side of each frame 100, the cover plate 400, the bottom plate 300 and each frame 100 enclose a cavity 500, and the cavity 500 is used for accommodating the battery cell 20.

Referring to fig. 5 and 6, an end of one frame 100 of the two adjacent frames 100 has an accommodating groove 101 recessed inward and opened, and an end of the other frame 100 of the two adjacent frames 100 covers the opening and closes the opening.

Through the arrangement, at least parts of the end parts of the adjacent two side frames 100 can be lapped, and the sealing element 200 is filled at the lapping position of the two side frames, so that the two side frames 100 are firmly connected, the sealing performance of the lapping position is improved, the structure is simple, safety and reliability are realized, and the requirements of structural strength and sealing performance can be met by the battery box body 10.

It should be noted that the cover plate 400, the bottom plate 300 and each of the frames 100 may be made of aluminum, steel or alloy, so as to further improve the overall structural strength of the battery case 10 and ensure the battery case 10 to have good ductility. In the present embodiment, the material of the cover 400, the bottom plate 300, and each of the frames 100 is preferably steel.

In specific embodiments, the cover plate 400, the base plate 300, and each of the frames 100 may have a hollow structure or a solid structure. The case 10 may have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

In the embodiment shown in fig. 5, the frame 100 includes side panels 110 and end panels 120, and the side panels 110 and the end panels 120 are substantially vertically connected. The end plate 120 is recessed inward relative to the edge of the side plate 110 and defines a receiving groove 101 with the side plate 110, and the end of the side plate 110 in each frame 100 at least partially overlaps.

In this embodiment, the end portions of the side frames 100 are provided with receiving grooves, and the end portions of the side plates 110 in each side frame 100 are at least partially overlapped to close the openings of the receiving grooves 101, so that the whole battery case 10 is compact and the structural strength is improved.

In the present embodiment, as shown in fig. 5 and 4, the side plate 110 and the end plate 120 are both planar, and the number of the side plate 110 and the end plate 120 is two. Wherein, the two side plates 110 are oppositely arranged, and the two end plates 120 are oppositely arranged. Through the arrangement, each frame 100 is approximately in a cuboid shape and has a flat surface, which is beneficial to ensuring the sealing performance among the fixedly connected frames 100.

In the present embodiment, as shown in fig. 5, the side plates 110 and the end plates 120 are each a single-layer plate-like structure, and the weight of the battery case 10 is reduced as much as possible while satisfying the requirement for mechanical strength. In other embodiments, the side plates 110 and/or the end plates 120 may be partially formed in a multi-layer structure to further satisfy the requirement of mechanical strength for the part of the battery case 10.

In the present embodiment, the side plates 110 and the end plates 120 are integrally formed, and have high mechanical strength and good integrity, so that the frames 100 can be easily attached and detached. In other embodiments, the side plates 110 and the end plates 120 may be a split structure, and the side plates 110 and the end plates 120 may be connected by riveting or welding.

As shown in fig. 5, the sealing member 200 may be a sealant or gasket. With this arrangement, the sealing member 200 is disposed in the receiving groove 101, so that the sealing property between the frame 100 and the frame 100 can be better ensured.

In the concrete implementation mode, the sealant can be elastic sealant or liquid sealant, dry or non-dry sticky substances such as asphaltum, natural resin or synthetic resin, natural rubber or synthetic rubber and the like are taken as base materials, inert fillers such as talcum powder, argil, carbon black, titanium dioxide, asbestos and the like are matched, and then plasticizer, solvent, curing agent and accelerator are added to prepare the sealant.

In particular embodiments, the gasket may be rubber or silicone or a hybrid elastomer.

In one embodiment shown in fig. 5, the number of the gaskets is one, and the size of the gaskets is equal to the size of the accommodating groove 101. Through this setting, only need with sealed the pad assembly in holding tank 101, carry on frame 100's assembly again can, do benefit to and simplify the assembly step, improve assembly efficiency.

In this embodiment, the thickness of the gasket is equal to the depth of the housing groove 101, the length of the gasket is equal to the length of the housing groove 101, and the width of the gasket is equal to the width of the housing groove 101.

Here, the thickness and depth are the dimension in the X direction shown in fig. 5, the length is the dimension in the Y direction shown in fig. 5, and the width is the dimension in the Z direction shown in fig. 5.

In another embodiment, not shown in fig. 5, the number of gaskets is at least two, and the size of the gaskets is smaller than that of the housing groove 101, and the gaskets are spaced apart in the housing groove 101. Through this setting, can lay sealed the pad in holding tank 101 according to actual demand, sealed mode of setting up of pad is more nimble, can nimble adaptation holding tank 101 of different sizes and shape, and the suitability is wider.

In this embodiment, the thickness of the gasket is equal to the depth of the housing groove 101, and/or the length of the gasket is equal to the length of the housing groove 101, and/or the width of the gasket is equal to the width of the housing groove 101.

In order to fixedly connect the end portions of the adjacent frames 100, as shown in fig. 2, the end portions of the side panels 110 of two adjacent frames 100 may be fixedly connected by fasteners 600, gluing or welding, so that the end portions of the side panels 110 of two adjacent frames 100 are at least partially overlapped.

Through this setting, sealed through the sealing member 200 that holds in the holding tank 101 between the adjacent frame 100 realizes, and the connection between the adjacent frame 100 is realized through gluing, fastener 600 connection or welded mode to make battery box 10 still can satisfy the leakproofness requirement of IP67 standard under the prerequisite of not welding or reduce the welding volume by a wide margin.

In the above-mentioned embodiment of the fixed connection by the fastener 600, as shown in fig. 5, the fastener 600 is inserted through the side plate 110 in one frame 100 and the end plate 120 in the other frame 100, so that the ends of two adjacent frames 100 are fixedly connected. For example, a first hole 111 is formed in the side plate 110 of one of the two adjacent frames 100, a second hole 112 is formed in the end plate 120 of the other of the two adjacent frames 100, and the fastening member 600 penetrates through the first through hole and is screwed to the second through hole, so that the end of the side plate 110 between the two adjacent frames 100 is fixedly connected. The fastener 600 may be a bolt or a screw, the first hole 111 may be a screw hole or a smooth hole, and the second hole 112 may be a screw hole.

In the above-mentioned embodiment of fixing and connecting by gluing, as shown in fig. 5, a gluing device is needed to coat a sealant on the lap joint of the side plates 110 in the two adjacent frames 100, and after the sealant is cured, the ends of the two adjacent frames 100 can be fixed and connected.

In the above-mentioned embodiment of fixed connection by welding, as shown in fig. 5, a weld needs to be reserved at the overlapping position of the side plates 110 in the two adjacent frames 100, and welding is performed at the reserved weld by a welding device, so that the end of the side plate 110 between the two adjacent frames 100 is fixedly connected.

In one embodiment, as shown in fig. 5, the sealing member 200 is a sealant, and the ends of two adjacent frames 100 are fixedly connected by a fastener 600. Through this setting, sealed the sealed glue that holds in through holding tank 101 between the adjacent frame 100 realizes, and the mode that the connection between the adjacent frame 100 is connected through fastener 600 is realized, enables battery box 10 to satisfy IP 67's leakproofness requirement under the prerequisite of not welded.

In another embodiment not shown in fig. 5, the sealing member 200 is a sealant, and the overlapping portions of the side panels 110 of two adjacent frames 100 are fixedly connected by gluing. Through this setting, sealed the sealed gluey realization of holding in through holding tank 101 between the adjacent frame 100, the connection between the adjacent frame 100 is realized through sticky mode, enables battery box 10 and satisfies IP 67's leakproofness requirement under the prerequisite of not welded.

In another embodiment not shown in fig. 5, the sealing member 200 is a sealant, and the overlapping portions of the side panels 110 of two adjacent frames 100 are fixedly connected by welding. Through this setting, sealed the sealed gluey realization of holding in through holding tank 101 between the adjacent frame 100, the connection between the adjacent frame 100 is realized through welding mode, enables battery box 10 and satisfies IP 67's leakproofness requirement under the prerequisite that reduces welding volume and welding seam length by a wide margin.

In yet another embodiment, not shown in fig. 5, the sealing member 200 is a gasket, and the ends of two adjacent frames 100 are fixedly connected by a fastener 600. Through this setting, sealed the sealed pad that holds in through holding tank 101 between the adjacent frame 100 realizes, and the mode that the connection between the adjacent frame 100 is connected through fastener 600 is realized, enables battery box 10 to satisfy IP 67's leakproofness requirement under the prerequisite of not welded.

In another embodiment not shown in fig. 5, the sealing member 200 is a sealing gasket, and the overlapping portions of the side plates 110 in two adjacent frames 100 are fixedly connected by welding. Through this setting, sealed the sealed pad that holds in through holding tank 101 between the adjacent frame 100 realizes, and the connection between the adjacent frame 100 is realized through welding mode, enables battery box 10 and satisfies IP 67's leakproofness requirement under the prerequisite that reduces welding volume and welding seam length by a wide margin.

In the embodiment shown in fig. 3, the base plate 300 is detachably coupled to the bottom side of each of the bezels 100, and the cover plate 400 is detachably coupled to the top side of each of the bezels 100.

In this embodiment, the base plate 300 can be detachably coupled to the bottom side of each of the side frames 100 by screws or bolts, and the cover plate 400 can be detachably coupled to the top side of each of the side frames 100 by screws or bolts.

In another embodiment not shown in fig. 3, the cover plate 400, the bottom plate 300 and each of the frames 100 may be an integrally formed structure, which has high structural strength and good sealing performance.

Referring to fig. 3, the battery in an embodiment includes the battery box 10 and the battery cell 20, and the battery cell 20 is accommodated in the cavity 500 of the battery box 10. In this embodiment, the battery case 10 has good structural strength and sealing performance, and the battery cells 20 accommodated in the battery case 10 can be well protected.

In the present embodiment, as shown in fig. 3, the number of the battery cells 20 is plural, and the plural battery cells 20 are arranged in parallel in the same direction in the cavity 500. The cavity 500 is sized and shaped to fit the battery cells 20 to prevent the battery cells 20 from colliding with each other in the cavity 500 or colliding with the inner wall of the cavity 500 to be damaged.

For example, as shown in fig. 3, the number of the battery cells 20 is fifteen, and fifteen battery cells 20 are arranged in the cavity 500 side by side along the X direction shown in fig. 2. Each battery cell 20 is rectangular, the cavity 500 is also rectangular to fit each battery cell 20, and the size of the cavity 500 can just accommodate fifteen battery cells 20.

In the present embodiment, since the cavity 500 has a rectangular shape, the number of the frame 100 is four. In other embodiments, the cavity 500 may have other shapes, and the number of the frames 100 may have other values.

According to some embodiments of the present application, referring to fig. 2, the present application provides a battery case 10, the battery case 10 including a plurality of bezels 100, a sealing member 200, a base plate 300, and a cover plate 400. The ends of the frames 100 are at least partially overlapped, the bottom plate 300 covers the bottom side of each frame 100, the cover plate 400 covers the top side of each frame 100, and the cover plate 400, the bottom plate 300 and each frame 100 enclose a cavity 500 for accommodating the battery cell 20. The frame 100 includes a side plate 110 and an end plate 120 that are substantially vertically connected, an end of the end plate 120 of any frame 100 is recessed inward and defines a receiving groove 101 with the side plate 110, the sealing element 200 is received in the receiving groove 101, and the sealing element 200 may be a sealant or a gasket. One frame 100 of the two adjacent frames 100 has an inward-recessed and open receiving groove 101 at an end thereof, the other frame 100 of the two adjacent frames 100 is covered at the open end thereof and closes the open end thereof, and the ends of the two adjacent frames 100 can be fixed by gluing, fastening by 600 or welding.

According to some embodiments of the present application, referring to fig. 2, the present application provides a battery 30, the battery 30 includes the above-mentioned battery box 10 and a plurality of battery cells 20, and the plurality of battery cells 20 are arranged side by side in the same direction in a cavity 500 of the battery box 10.

According to some embodiments of the present application, referring to fig. 1, the present application provides a powered device, which includes the above-mentioned battery 30, and the battery 30 is used for providing electric energy.

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 (11)

1. A battery case, comprising:

the end parts of the frames are at least partially overlapped, one frame end part of two adjacent frames is provided with an inward-sunken and open accommodating groove, and the other frame end part of the two adjacent frames is covered on the opening to seal the opening;

the sealing element is accommodated in the accommodating groove;

the bottom plate is covered on the bottom side of each frame; and

the cover plate covers the top sides of the frames, and the cover plate, the bottom plate and the frames enclose a cavity for containing a battery monomer.

2. The battery box of claim 1, wherein the side frames include side plates and end plates connected substantially perpendicularly, the end plates being recessed inwardly relative to edges of the side plates and defining the receiving slots with the side plates, the end portions of the side plates in each of the side frames at least partially overlapping.

3. The battery case of claim 2, wherein the seal is a sealant.

4. The battery case according to claim 2, wherein the sealing member is a gasket.

5. The battery case according to claim 4, wherein the number of the gasket is one, and the gasket has a size equal to that of the receiving groove.

6. The battery case according to claim 4, wherein the number of the sealing gaskets is at least two, the size of the sealing gaskets is smaller than that of the accommodating groove, and the sealing gaskets are arranged in the accommodating groove at intervals.

7. The battery box body as claimed in any one of claims 3 to 6, further comprising a fastener, wherein the fastener is inserted through the side plate in one of the frames and the end plate in the other frame, so as to fixedly connect the end portions of two adjacent frames.

8. The battery box body as claimed in any one of claims 3 to 6, wherein the overlapping parts of the side plates in two adjacent side frames are fixedly connected by gluing.

9. The battery box body as claimed in any one of claims 3 to 6, wherein the overlapping part of the side plates in two adjacent side frames is fixedly connected by welding.

10. A battery, comprising:

a battery cell;

the battery case of any one of claims 1-9, wherein the battery cells are housed within the battery case.

11. An electrical consumer, characterized in that it comprises a battery according to claims 1-10 for providing electrical energy.

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