CN216015582U

CN216015582U - Battery box, battery and power consumption device

Info

Publication number: CN216015582U
Application number: CN202122383132.5U
Authority: CN
Inventors: 朱德财; 吴自强; 孙硕
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-03-11
Anticipated expiration: 2031-09-29
Also published as: WO2023050855A1

Abstract

The embodiment of the utility model relates to the technical field of batteries, and discloses a battery box body, a battery and an electric device, wherein the battery box body comprises a cross beam, a longitudinal beam and a plurality of connecting pieces; the cross beam and the longitudinal beam are mutually overlapped through a die-casting support, a connecting hole is formed in the die-casting support, and the connecting hole penetrates through the cross beam or the longitudinal beam; the connecting pieces comprise first connecting parts and second connecting parts, and the first connecting parts or the second connecting parts of the connecting pieces penetrate through the connecting holes to be connected with each other so as to electrically connect the batteries, so that the rigidity of the battery box body is improved.

Description

Battery box, battery and power consumption device

Technical Field

The embodiment of the utility model provides a relate to battery technical field, concretely relates to battery box, battery and power consumption 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.

The inventor of the application discovers in research that after the existing battery is installed on an electric vehicle body, a battery box body is easy to loosen in the using process, the rigidity of the battery box body is not enough, and the problem that the box body is easy to crack is easily caused.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, the embodiment of the utility model provides a battery box, battery and power consumption device to improve the rigidity of battery box.

The battery box that this application embodiment provided includes: the device comprises a cross beam, a longitudinal beam and a plurality of connecting pieces; the cross beam and the longitudinal beam are mutually overlapped through a die-casting support, a connecting hole is formed in the die-casting support, and the connecting hole penetrates through the cross beam or the longitudinal beam; the connecting pieces comprise a first connecting part and a second connecting part, and the first connecting part or the second connecting part of each connecting piece penetrates through the connecting holes to be mutually connected and is used for electrically connecting the batteries.

The embodiment of the application makes the connection mode between different batteries more diversified and more convenient, has avoided the crossbeam with the lap joint of longeron carries out the incision, has increased the connection rigidity of battery box, has avoided the battery box fracture in the use. The convenience of connection between different batteries is improved, and the batteries are easier to replace and maintain.

In some embodiments, the connector is L-shaped, T-shaped, in-line, or U-shaped. Through setting the connecting piece to multiple shape, realized the diversification of connected mode between each battery in the battery box, can make the interior line of walking of battery box compacter, battery box structure is more reasonable.

In some embodiments, the first and second connection portions are provided with through holes, respectively. Through being provided with the through-hole on each connecting portion, can conveniently pass through threaded connection between the different connecting pieces, simplify the mode of connecting.

In some embodiments, the first connecting portion and the second connecting portion are respectively provided with a plugging portion, and the plugging portion of the first connecting portion and the plugging portion of the second connecting portion can be plugged with each other, so that convenient connection between different connecting pieces is realized.

In some embodiments, a sleeve is disposed within the attachment bore, and the attachment member passes through the sleeve.

Through set up the sleeve in the connecting hole, can make things convenient for the installation of connecting piece, simultaneously, can with the connecting piece with the longeron is kept apart, avoids the installation of connecting piece to produce the influence to the longeron, has improved the rigidity of longeron.

In some embodiments, a limiting portion is disposed in the sleeve, and the limiting portion is used for limiting the connecting piece.

Through spacing portion can be right the connecting piece carries out the block, is in the installation on the one hand during the connecting piece, spacing portion can regard as the guide rail to realize the installation of connecting piece, and on the other hand, in the use, through spacing portion is right the connecting piece is fixed, has avoided rocking of connecting piece, has improved the rigidity that the connecting piece is connected.

In some embodiments, the spacing portion is a spacing protrusion; and two ends of the sleeve are respectively provided with a limiting bulge. The connecting piece can be conveniently limited, and the sleeve is simple in structure and convenient to produce and manufacture.

In some embodiments, the connector is copper bar, which provides the connector with a certain hardness and is easier to mold.

In some embodiments, there is also provided a battery including: the battery cell and the battery box body provided in the above embodiments are used for accommodating the battery cell.

In some embodiments, a powered device is proposed, comprising a battery proposed in the above embodiments, the battery being configured to provide electrical energy.

The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.

Drawings

Various other 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 invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a block diagram illustrating an electric device according to an embodiment of the present disclosure;

fig. 2 is a schematic diagram illustrating an exploded structure of a battery provided in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a battery box provided by an embodiment of the present application;

FIG. 4 is an enlarged view of detail A of FIG. 3;

FIG. 5 illustrates a schematic view of a connector provided by an embodiment of the present application;

FIG. 6 illustrates a schematic diagram of a connection provided by an embodiment of the present application;

fig. 7 shows a schematic view of a connector assembly provided by an embodiment of the present application.

The reference numbers in the detailed description are as follows:

a vehicle 1000, a battery 100, a battery case 10, an upper case 11, a lower case 12, a battery 20, a controller 200, a motor 300;

the connecting structure comprises a cross beam 110, longitudinal beams 120, connecting holes 122, a die-cast bracket 130, a sleeve 132, connecting

pieces

140 and 150, a first connecting part 141, a second connecting part 142 and a third connecting part 143.

Detailed Description

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

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

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 in the description of the application in the present application 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. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different elements and not for describing a particular sequential or chronological order.

Reference in the specification 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 specification. 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 present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "attached" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

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

The "plurality" in the present application means two or more (including two), and similarly, "plural" means two or more (including two) and "plural" means two or more (including two).

At present, with the development of technology, the application of power batteries is more and more extensive. 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.

The inventor of the present application has noticed that the power battery is an important component of the electric vehicle, and the factors affecting the performance of the battery, in addition to the performance of the battery itself, how to tightly combine the power battery with the body of the electric vehicle, also affects the performance of the battery and the electric vehicle itself. Current battery box includes crossbeam and longeron, and crossbeam and longeron carry out the overlap joint through the die-casting support and fix, and mutual independence between the copper bar of connecting each battery module in the battery box and the box, when installing the battery in to the battery box, need carry out the incision in crossbeam and longeron overlap joint to can make the copper bar pass through.

Because the incision that crossbeam or longeron carried out in order to dodge the copper bar can lead to the junction of crossbeam and longeron not to overlap joint with optimum height, can arouse the reduction of battery box natural frequency to make the rigidity of box reduce, in the vehicle driving process, when the battery box receives vibrations and assaults, cause the box fracture very easily, and then influence vehicle safety.

Based on the consideration, the connecting piece between each battery is connected to carry out the modularized design, so that the connecting piece can be organically combined with the battery box body, when the connecting piece is used for connecting each battery in the battery box body, a notch can be prevented from being arranged at the joint of the cross beam and the longitudinal beam of the battery box body, the cross beam and the longitudinal beam can be overlapped at the optimal height, the integral rigidity of the battery box body is improved, and the convenience of connection between each battery in the battery box body is also improved.

The embodiment of the application discloses battery box can but not be used in the electrical installation such as vehicle, boats and ships or aircraft. The battery box, the battery and the like disclosed in the application can be used to form part of a power supply system of the electric device, so that the rigidity of the battery box is improved, and the safety of the electric device is improved.

The embodiment of the application provides an electric device using a battery as a power supply, wherein the electric device can be but is not limited to a mobile phone, a tablet, 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 take an example in which a power consuming apparatus according to an embodiment of the present application is a vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to an embodiment of the present disclosure. The vehicle 1000 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 battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery 100 may be used to supply power to the vehicle 1000, for example, the battery 100 may serve as an operating power source of the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to supply power to the motor 300, for example, for starting, navigation, and operational power requirements while the vehicle 1000 is traveling.

In some embodiments 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 for the vehicle 1000.

Referring to fig. 2, fig. 2 is an exploded view of a battery 100 according to an embodiment of the present disclosure. The battery 100 includes a battery case 10 and a battery cell 20, and the battery cell 20 is accommodated in the battery case 10. The battery case 10 is used to provide a receiving space for the battery cells 20, and the battery case 10 may have various structures. In some embodiments, the battery case 10 may include an upper case 11 and a lower case 12, the upper case 11 and the lower case 12 cover each other, and the upper case 11 and the lower case 12 together define a receiving space for receiving the battery cell 20. The lower box body 12 can be a hollow structure with an opening at one end, the upper box body 11 can be a plate-shaped structure, and the upper box body 11 covers the opening side of the lower box body 12, so that the upper box body 11 and the lower box body 12 jointly define an accommodating space; the upper case 11 and the lower case 12 may be both hollow structures with one side open, and the open side of the upper case 11 may cover the open side of the lower case 12. Of course, the battery case 10 formed by the upper case 11 and the lower case 12 may have various shapes, for example, a cylindrical body, a rectangular parallelepiped, and the like.

Reference to the battery 100 in the 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 100 referred to in the present application may include a battery module or a battery pack, etc. The battery cells 20 may be multiple, and the multiple battery cells 20 may be connected in series, in parallel, or in series-parallel, where in series-parallel refers to that the multiple battery cells 20 are connected in series or in parallel. The plurality of battery monomers 20 can be directly connected in series or in parallel or in series-parallel, and the whole formed by the plurality of battery monomers 20 is accommodated in the battery box body 10; of course, a plurality of battery cells 20 may be connected in series or in parallel or in series-parallel to form the battery 100 in the form of a battery module, and a plurality of battery modules may be connected in series or in parallel or in series-parallel to form a whole and accommodated in the battery case 10. The battery 100 may further include other structures, for example, the battery 100 may further include a bus member for achieving electrical connection between the plurality of battery cells 20.

Specifically, as shown in fig. 3 and 4, the battery case body 10 provided in the embodiment of the present application includes a cross beam 110, a longitudinal beam 120, and a plurality of connecting members 140, where the cross beam 110 and the longitudinal beam 120 are overlapped with each other through a die-cast bracket 130, a connecting hole 122 is provided on the die-cast bracket 130, and the connecting hole 122 passes through the cross beam 110 or the longitudinal beam 120; the connection members 140 include a first connection portion 141 and a second connection portion 142, and the first connection portion 141 or the second connection portion 142 of each connection member 140 is connected to each other through the connection hole 122 for electrically connecting the batteries.

As shown in fig. 3, the battery box 10 includes cross beams 110 and longitudinal beams 120 that are overlapped with each other, and the cross beams 110 and the longitudinal beams 120 are important parts that constitute the battery box and are important carriers for placing batteries in the battery box, and the rigidity of the cross beams 110 and the longitudinal beams 120 greatly affects the overall rigidity of the battery box 10. In fig. 3, in the embodiment of the present application, a beam in the length direction of the battery box 10 is defined as a cross beam 110, a beam in the width direction of the battery box 10 is defined as a longitudinal beam 120, and the cross beam 110 and the longitudinal beam 120 may be overlapped perpendicularly to each other and also overlapped at a certain inclination angle, and a specific connection manner is not limited in the embodiment of the present application. When the batteries are placed on the cross beams 110 or the longitudinal beams 120 in the battery box 10, the positive electrodes and the negative electrodes of different batteries need to be connected through connecting pieces so that the carried batteries can be connected in series or in parallel.

The die-casting support 130 is a connecting part between the cross beam 110 and the longitudinal beam 120, the cross beam 110 and the longitudinal beam 120 are connected through the die-casting support 130, the die-casting support 130 comprises a connecting screw hole connected with the cross beam and also comprises a socket joint sleeved on the longitudinal beam, and the die-casting support 130 fixes the cross beam and the longitudinal beam together through a screw joint or other modes so as to increase the connection rigidity of the battery box body.

The connection member 140 is a connection conductor connecting different batteries, and connects the different batteries in series or in parallel. The connecting member 140 may be provided in different shapes and different materials according to different use scenarios.

Fig. 3 is an overall schematic view of the battery box 10, fig. 4 is an enlarged view of a portion a in fig. 3, as can be seen from fig. 4, the cross beam 110 and the longitudinal beam 120 are overlapped with each other through the die-casting bracket 130, one end of the die-casting bracket 130 is provided with a socket, the socket is in socket connection with one end of the longitudinal beam 120, the die-casting bracket 130 is fixed with the longitudinal beam 120 through a screw, the other end of the die-casting bracket 130 is provided with a connecting piece, the connecting piece is provided with a threaded hole, and the threaded hole is fixedly connected with the cross beam 110, so that the cross beam 110 and the longitudinal beam 120 are fixedly connected. One end of the die-casting support 130 connected with the longitudinal beam 120 is provided with a connecting hole 122, and the connecting hole 122 penetrates through the longitudinal beam 120. A plurality of the connection members 140 pass through the connection holes 122, each of the connection members 140 is provided in a modular configuration having a specific shape and a connection portion, as shown in fig. 4, the connection member 140 includes a first connection portion 141 and a second connection portion 142, and the first connection portion 141 or the second connection portion 142 of each of the connection members pass through the connection holes 122 to be connected to each other. Two identical connecting members 140 are inserted through the connecting holes 122 and connected to connecting members at other stringers by another connecting member 150. As can be seen from fig. 4, the connecting

members

140 and 150 have the same structure and different lengths, and the two ends of the connecting member are respectively provided with a first connecting portion and a second connecting portion, which are mutually matched to realize connection, thereby greatly facilitating connection between different batteries.

According to the embodiment, the connecting holes are formed in the die-casting support and penetrate through the cross beam or the longitudinal beam, so that the connecting piece is connected between different batteries in the battery box body through the connecting holes, the connecting piece is provided with the first connecting portion and the second connecting portion, the connecting modes between the different batteries are diversified and more convenient, the cross beam and the lap joint of the longitudinal beam are cut, the connecting rigidity of the battery box body is improved, the battery box body is prevented from being cracked in the using process, the convenience of connection between the different batteries is improved, and the batteries are changed and maintained more easily.

In some embodiments, as shown in fig. 5, the connector is L-shaped, T-shaped, in-line, or U-shaped. In the battery box 10, one or more types of connecting pieces can be adopted, so that the connecting modes among the batteries are more various, and the connecting device can be more suitable for the structural requirements of different battery boxes.

As shown in fig. 5(a), the connecting members are L-shaped, connecting holes are provided in the first connecting portion 141 and the second connecting portion 142 of the L-shaped connecting members, and when a plurality of L-shaped connecting members are connected to each other, the first connecting portion 141 and the second connecting portion 142 can be fixed to each other through the connecting holes to form circuit routing modes with different structures.

As shown in fig. 5(b), the connecting member is T-shaped, the T-shaped connecting member includes a first connecting portion 141, a second connecting portion 142, and a third connecting portion 143, each connecting portion is provided with a connecting hole, and three connecting portions are provided on the T-shaped connecting member, so that more diversified connecting methods can be implemented, and the L-shaped connecting member and the T-shaped connecting member can be combined.

As shown in fig. 5(c), the connecting member is a straight-line-shaped connecting member, which includes a first connecting portion 141 and a second connecting portion 142, and compared with an L-shaped connecting member, the connecting member has a simpler structure and can be combined and connected with a T-shaped connecting member and an L-shaped connecting member.

As shown in fig. 5(d), the connecting member is U-shaped, the U-shaped connecting member is provided with a first connecting portion 141 and a second connecting portion 142 at two free ends thereof, and may be further provided with a third connecting portion 143 and a fourth connecting portion 144 at a U-shaped bent portion thereof, and by providing a plurality of connecting portions, diversification of connecting modes of the connecting member is achieved. The U-shaped connecting piece can be mutually combined with the L-shaped connecting piece, the T-shaped connecting piece and the straight-line-shaped connecting piece to form various connecting modes.

It should be noted that fig. 5 shows the shapes of several commonly used connecting members, and those skilled in the art can also make appropriate modifications on the connecting members shown in fig. 5 to adapt to the internal structure of the battery case to connect the batteries.

Through setting the connecting piece to multiple shape, realized the diversification of connected mode between each battery in the battery box, can make the interior line of walking of battery box compacter, battery box structure is more reasonable.

In some embodiments, the first connection portion and the second connection portion are respectively provided with through holes, and with continued reference to fig. 4, in order to achieve convenient connection between different connection members, the embodiment of the present application is provided with through holes on each connection portion, through which different connection members can be connected through threads. Of course, the connecting element can also be connected to the transverse beam or longitudinal beam via the through-opening.

In some embodiments, the first connecting portion and the second connecting portion are respectively provided with a plugging portion, and the plugging portion of the first connecting portion and the plugging portion of the second connecting portion can be plugged with each other. In order to realize the diversification of the connection mode between the connecting pieces, the inserting part can be divided into a male head and a female head, and the male head and the female head are inserted into each other to realize the convenient connection between different connecting pieces. Of course, on specific battery box, can use the connecting piece cooperation that has different connected modes simultaneously, can make the connection between the battery in the battery box more diversified.

In some embodiments, in order to realize the connection between the connecting member and the longitudinal beam or the transverse beam, a sleeve 132 is disposed in the connecting hole 122, and the connecting member 140 penetrates through the sleeve 132 to realize the connection of the batteries on both sides of the transverse beam or the longitudinal beam.

Specifically, as shown in fig. 6, the sleeve 132 is disposed in the connecting hole 122, the sleeve 132 penetrates through the longitudinal beam 120, and the plurality of connecting members 140 penetrate through the sleeve 132 to connect the batteries on both sides of the longitudinal beam.

As shown in fig. 7, for a schematic connection diagram after the connecting member 140 passes through the sleeve 132, the connecting member 140 can conveniently pass through the sleeve 132 to connect the batteries on both sides of the stringer.

Through set up sleeve 132 in the connecting hole 122, the installation of realization connecting piece 140 that can be convenient, simultaneously, the sleeve can with connecting piece 140 with longeron 120 keeps apart, avoids connecting piece 140's installation to produce the influence to longeron 120, has improved the rigidity of longeron.

In some embodiments, a position-limiting portion is disposed in the sleeve 132, and the position-limiting portion is used for limiting the position of the connecting member 140. Because can supply a plurality of connecting pieces to pass in the sleeve 132, when a plurality of connecting pieces passed, in the use, along with rocking of vehicle, can take place to rock between the connecting piece, in this application embodiment set up spacing portion in the sleeve 132, spacing portion can be right the connecting piece carries out the block, is installing on the one hand during the connecting piece, spacing portion can regard as the guide rail to realize the installation of connecting piece, and on the other hand, in the use, through spacing portion is right the connecting piece is fixed, has avoided rocking of connecting piece, has improved the rigidity that the connecting piece is connected.

In some embodiments, the limiting portion is a limiting protrusion, and the two ends of the sleeve are respectively provided with the limiting protrusions. In order to conveniently realize the connection of the connecting piece, the limiting part is arranged to be a limiting bulge, and the two ends of the sleeve are respectively provided with the limiting bulges, so that the limiting of the connecting piece can be conveniently realized, and the sleeve is simple in structure and convenient to produce and manufacture.

In some embodiments, the connector is copper bar. The copper bar can be made of copper alloy materials or aluminum alloy materials, has excellent conductivity and certain hardness, can be generally made into a flat shape, and is convenient for connection and wiring among connecting pieces.

According to some embodiments provided by the application, a battery is also provided, and the battery comprises any one of the battery cases mentioned in the embodiments. Be provided with a plurality of batteries in the battery box, a plurality of batteries pass through crossbeam and longeron are fixed, pass through between the different batteries the connecting piece is connected, through the battery box structure that this application embodiment provided, can increase the rigidity of battery box, improved the convenience of connecting between the different batteries, make the battery is changed and is maintained more easily.

According to some embodiments provided by the present application, there is also provided an electric device, which includes the battery provided in the above embodiments, and the battery is used for providing electric energy for the electric device. The electricity utilization device can be, but is not limited to, a mobile phone, a tablet, 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.

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 be modified or some technical features may be equivalently replaced, but the modifications or the replacements do not cause the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery case, comprising: the device comprises a cross beam, a longitudinal beam and a plurality of connecting pieces;

the cross beam and the longitudinal beam are mutually overlapped through a die-casting support, a connecting hole is formed in the die-casting support, and the connecting hole penetrates through the cross beam or the longitudinal beam;

the connecting pieces comprise a first connecting part and a second connecting part, and the first connecting part or the second connecting part of each connecting piece penetrates through the connecting holes to be mutually connected and is used for electrically connecting the batteries.

2. The battery case according to claim 1, wherein the connector is L-shaped, T-shaped, in-line, or U-shaped.

3. The battery case according to claim 1 or 2, wherein the first connection portion and the second connection portion are provided with through-holes, respectively.

4. The battery box body according to claim 1 or 2, wherein the first connecting part and the second connecting part are respectively provided with a plugging part, and the plugging part of the first connecting part and the plugging part of the second connecting part can be plugged with each other.

5. The battery box of claim 1, wherein a sleeve is provided in the coupling hole, and the coupling member passes through the sleeve.

6. The battery box body as claimed in claim 5, wherein a limiting part is arranged in the sleeve, and the limiting part is used for limiting the connecting piece.

7. The battery box body of claim 6, wherein the limiting part is a limiting projection; and two ends of the sleeve are respectively provided with a limiting bulge.

8. The battery case of claim 1, wherein the connector is copper bar.

9. A battery, comprising:

a battery cell;

the battery case of any one of claims 1-8, the battery case for housing the battery cells.

10. An electrical device comprising a battery according to claim 9 for providing electrical energy.