CN220510190U

CN220510190U - Middle support piece of battery box body, battery and power utilization device

Info

Publication number: CN220510190U
Application number: CN202321785937.5U
Authority: CN
Inventors: 皮强; 杨康康; 刘旋; 彭梦龙
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2023-07-07
Filing date: 2023-07-07
Publication date: 2024-02-20
Anticipated expiration: 2033-07-07

Abstract

The embodiment of the application provides a middle support piece of battery box, battery and power consumption device, belongs to battery technical field. The middle support of the battery box includes: the middle side plate comprises a main plate body and a flanging connected with the main plate body, wherein the main plate body is used for being connected with an end plate of a frame of the battery box body and separating two adjacent rows of battery monomers; the support plate is connected with the flanging and used for supporting the battery cell. According to the middle support piece that this application provided, through well curb plate with the backup pad cooperation supports the battery monomer reduces two rows influenced by gravity undercut leads to the circumstances that the battery box bottom warp between the battery monomer, guarantees the planarization of battery box bottom to promote the structural strength of battery box, promote the life and the security performance of battery box.

Description

Middle support piece of battery box body, battery and power utilization device

Technical Field

The present application relates to the field of battery technology, and more particularly, to a middle support of a battery case, a battery, and an electric device.

Background

At present, in order to improve the capacity of a power battery, a plurality of rows of battery monomers are generally arranged in a battery box body of the power battery, the end parts of part of battery monomers in the plurality of rows of battery monomers are not supported by frames, the battery box body is easy to deform under long-time use, the bottom flatness of the battery box body is poor, the product quality is affected, and potential safety hazards are seriously possibly caused.

Disclosure of Invention

The application provides a middle part support piece of battery box, battery and power consumption device to solve the technical problem that double battery monomer middle part was collapsed easily, guarantee the planarization of battery box bottom, promote the life and the security performance of battery box.

In a first aspect, embodiments of the present application provide a middle support of a battery box, including:

the middle side plate comprises a main plate body and a flanging connected with the main plate body, wherein the main plate body is used for being connected with an end plate of a frame of the battery box body and separating two adjacent rows of battery monomers;

the support plate is connected with the flanging and used for supporting the battery cell.

In the above technical scheme, through well curb plate with the backup pad cooperation supports the battery monomer reduces two rows influenced by gravity undercut leads to the circumstances of battery box bottom deformation between the battery monomer, guarantees the planarization of battery box bottom, promotes the structural strength of battery box to promote the life and the security performance of battery box.

In some embodiments, the flange comprises a plurality of segments, at least two segments of the flange being folded toward different sides of the main panel body.

In the above technical scheme, the two sections of flanges are bent towards different sides of the main board body so as to support the two battery monomers positioned on two sides of the main board body.

In some embodiments, adjacent two segments of the flange are spaced apart.

In the technical scheme, the two adjacent sections of the flanges are arranged at intervals, so that the stress concentration between the two adjacent sections of the flanges is not easy to cause failure, and the structural stability is ensured.

In some embodiments, the two ends of the main board body are provided with connecting sections for connecting with the end plates, and the dimension of the connecting sections in the main board height direction is not more than the dimension of the main body part of the main board body in the main board height direction.

In the above technical scheme, the connecting section is connected with the end plate to support the main board body, and the height of the connecting section is not more than the dimension of the main body part of the main board body in the height direction of the main board body, so that the connecting section is connected with the end plate.

In some embodiments, at least one of the flanges is provided with a first locating hole, the support plate is provided with a second locating hole, and the first locating hole is matched with the second locating hole in a locating way through a locating pin.

In the above technical scheme, through setting up first locating hole with the second locating hole, to turn-ups with backup pad location cooperation makes the backup pad with well curb plate is fixed relatively, the installation of being convenient for.

In some embodiments, the main board body is provided with a first limiting part at one side provided with the flanging, the supporting board is provided with a second limiting part, and the first positioning hole is opposite to the second positioning hole under the condition that the first limiting part and the second limiting part are in limiting fit with the first end of the middle supporting piece in the length direction.

In the above technical scheme, through setting up first spacing portion with the spacing portion of second, it is supplementary the locating pin is right the backup pad with well curb plate is spacing, makes the connection more reliable.

In some embodiments, the first limiting portion is a protrusion, and a protruding height of the first limiting portion in the main plate height direction is higher than the flange; the second limiting part is a groove body and is opened at the end part of the supporting plate.

In the above technical scheme, through setting up the cell body with the convex part, the cell body is opened the setting and is convenient for the backup pad with well curb plate cooperation installation, the convex part with during the cell body butt, play spacing effect.

In some embodiments, the support plate includes a receiving slot and an opening in communication with the receiving slot, the opening being located on an upper surface of the support plate, the flange being located within the receiving slot, and the main plate body extending from the opening.

In the above technical scheme, the flange is arranged in the accommodating groove to realize the limit connection of the middle side plate and the supporting plate, and the main plate body extends out of the opening to enable the main plate body to be connected with the end plate of the battery box body.

In some embodiments, the support plate comprises: the first section, the second section and the third section that link to each other in proper order, the first section with the third section respectively with the both sides of second section link to each other, and towards the homonymy of second section buckle to with the second section sets up relatively in order to form the holding tank, the first section with the second section interval is in order to form the opening.

In the above technical scheme, the first section and the third section are arranged in parallel relative to the second section to form the accommodating groove, and the flanging is arranged in the accommodating groove to realize limit connection of the middle side plate and the supporting plate.

In some embodiments, the middle side plate is a metal material, the support plate is a plastic material, and the middle side plate and the support plate are integrally formed.

In the technical scheme, the middle side plate and the supporting plate are integrally arranged, so that the assembly and the transportation are convenient, and the supporting plate is made of plastic materials, so that the production cost is reduced.

In a second aspect, embodiments of the present application provide a battery case, including:

the frame forms a cavity for accommodating the battery monomer;

the middle support of any of the above embodiments, wherein the main plate body is connected to an end plate of the frame.

In the above technical scheme, the mainboard body with the end plate of frame is connected and is realized fixedly, through well curb plate with the backup pad cooperation supports the battery monomer reduces two rows influenced by gravity undercut leads to the circumstances that the battery box bottom warp between the battery monomer, guarantees the planarization of battery box bottom, promotes the structural strength of battery box to promote the life and the security performance of battery box.

In some embodiments, the body plate is welded to the rim, and the body plate and the rim are a non-heat treatable aluminum alloy and a heat treatable aluminum alloy, respectively.

In the technical scheme, through setting up the aluminum alloy of different marks, improve well curb plate with the welding strength of frame promotes the mechanical properties of battery box.

In a third aspect, embodiments of the present application provide a battery, including:

at least two rows of battery cells;

the battery box according to any one of the embodiments, wherein the battery cells are accommodated in the cavity, and the main plate separates two adjacent rows of battery cells, and the battery cells are supported by the support plate.

In a fourth aspect, an embodiment of the present application provides an electrical device, including:

the battery according to the above embodiment, wherein the battery is configured to supply electric power.

In the above technical scheme, through well curb plate with the backup pad cooperation supports the battery monomer reduces two rows receive the condition that gravity influence undercut leads to battery box bottom to warp between the battery monomer, guarantee the planarization of battery box bottom, promote the structural strength of battery box to promote battery box's life and security performance, and then promote the reliability in utilization of power consumption device.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

fig. 2 is a schematic structural diagram of a battery according to some embodiments of the present disclosure;

FIG. 3 is a second schematic diagram of a battery according to some embodiments of the present disclosure;

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

FIG. 5 is a third schematic diagram of a battery according to some embodiments of the present disclosure;

FIG. 6 is an enlarged view of FIG. 5 at B;

FIG. 7 is a schematic view of a middle side plate according to some embodiments of the present disclosure;

FIG. 8 is an enlarged view of FIG. 7 at C;

FIG. 9 is an enlarged view of FIG. 7 at D;

FIG. 10 is a schematic structural view of a support plate according to some embodiments of the present application;

FIG. 11 is one of the structural schematic illustrations of a mid-support provided in some embodiments of the present application;

FIG. 12 is a second schematic view of a middle side plate according to some embodiments of the present disclosure;

fig. 13 is a second schematic structural view of a support plate according to some embodiments of the present disclosure.

Reference numerals:

a vehicle 1, a motor 20, and a controller 30;

a battery 10, a battery case 11, and a battery cell 12;

the middle support 13, the middle side plate 131, the main plate body 1311, the first limiting part 13111, the connecting section 13112, the flange 1312, the first positioning hole 13121, the support plate 132, the second limiting part 1321, the second positioning hole 1322, the accommodating groove 1323, the opening 1324, the first section 1325, the second section 1326, the third section 1327, the positioning pin 133;

frame 14, end plate 141, and connecting groove 1411.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, 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 apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the 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 herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily 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 may be included in at least one embodiment of the application. The appearances of such phrases 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. Those of skill in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "attached" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

The term "and/or" in this application is merely an association relation describing an associated object, and indicates that three relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In this application, the character "/" generally indicates that the associated object is an or relationship.

The term "plurality" as used herein refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural sheets" refers to two or more (including two).

The battery cells mentioned in the embodiments of the present application 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, to which the embodiments of the present application are not limited. The battery cells may be cylindrical, flat, rectangular, or otherwise shaped, as well as the embodiments herein are not limited in this regard. The battery cells are generally classified into three types according to the packaging method: the cylindrical battery cell, the square battery cell and the soft pack battery cell are not limited thereto.

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, or the like. The battery generally includes a case for housing one or more battery cells or a plurality of battery modules. The case body can prevent liquid or other foreign matters from affecting the charge or discharge of the battery cells.

The battery cell includes a case, an electrode assembly, and an electrolyte, and the case is used to accommodate the electrode assembly and the electrolyte. The electrode assembly consists of a positive electrode plate, a negative electrode plate and a separation film. The battery cell mainly relies on metal ions to move between the positive pole piece and the negative pole piece to work. The positive electrode plate comprises a positive electrode current collector and a positive electrode active material layer, wherein the positive electrode active material layer is coated on the surface of the positive electrode current collector, the positive electrode current collector without the positive electrode active material layer protrudes out of the positive electrode current collector coated with the positive electrode active material layer, and the positive electrode current collector without the positive electrode active material 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 electrode plate comprises a negative electrode current collector and a negative electrode active material layer, wherein the negative electrode active material layer is coated on the surface of the negative electrode current collector, the negative electrode current collector without the negative electrode active material layer protrudes out of the negative electrode current collector coated with the negative electrode active material layer, and the negative electrode current collector without the negative electrode active material layer is used as a negative electrode tab. 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 high current is passed without fusing, the number of positive electrode lugs is multiple and stacked together, and the number of negative electrode lugs is multiple and stacked together.

The material of the separator may be PP (polypropylene) or PE (polyethylene). In addition, the electrode assembly may be a wound structure or a lamination structure, and the embodiment of the present application is not limited thereto.

In recent years, new energy automobiles have been developed dramatically, and in the field of electric automobiles, a power battery plays an important role as a power source of the electric automobile. The battery is composed of a battery box body and a plurality of battery monomers accommodated in the battery box body. The battery is used as a core part of a new energy automobile, and has high requirements on safety and cycle service life.

The inventors have found that in a general power battery, a plurality of battery cells in a case of the battery are generally stacked in an aligned manner in order to obtain sufficient power from the battery. However, for promoting power battery's capacity, the battery monomer is equipped with the multirow in power battery's the battery box generally, and the free tip of partial battery in the multirow battery monomer does not have the frame and supports, extremely causes the battery box to warp under long-time use extremely easily, makes the bottom planarization of battery box relatively poor, influences product quality, seriously probably causes the potential safety hazard.

Based on the above-mentioned consideration, in order to solve and put multirow battery monomer in the battery box, extremely cause the battery box to warp under long-time use, make the bottom planarization of battery box relatively poor, influence product quality, serious probably cause the problem of potential safety hazard, the inventor has designed a middle part support piece of battery box through intensive study, including well curb plate and backup pad, well curb plate includes the mainboard body and links to each other with the mainboard body turn-ups, and the mainboard body is used for linking to each other with the end plate of the frame of battery box, and is used for separating two adjacent rows of battery monomer. The backup pad links to each other with the turn-ups, and is used for supporting the battery monomer.

In the middle support piece of the battery box body of the structure, the middle side plate and the support plate are arranged in a split mode, the middle side plate is used for being connected with the end plate of the frame of the battery box body, the support plate is connected with the middle side plate and used for supporting a battery unit, the middle side plate and the support plate are convenient to design respectively by adopting the structure, different materials can be selected for the middle side plate and the support plate, the connection strength of the middle side plate and the end plate of the battery box body is improved, and the fracture probability of the connection position of the middle side plate and the end plate of the battery box body due to stress concentration is reduced. Meanwhile, under the condition of multiple rows of battery monomers, the situation that the bottom of the battery box is deformed due to the influence of gravity between the batteries in each row is reduced, the flatness of the bottom of the battery box is guaranteed, the structural strength of the battery box is improved, and the service life and the safety performance of the battery box are improved.

The battery disclosed by the embodiment of the application can be used in electric devices such as vehicles, ships or aircrafts, but is not limited to the batteries. The power supply system with the battery thermal management system, the battery and the like disclosed by the application can be used for forming the power utilization device, so that the application range of the battery thermal management system is favorably improved, and the assembly difficulty of the battery thermal management system is reduced.

The embodiment of the application provides an electricity utilization device using a battery as a power supply, wherein 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 car, a ship, a spacecraft and the like. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like.

For convenience of description, the following embodiment will take an electric device according to an embodiment of the present application as an example of the vehicle 1.

As shown in fig. 1, a schematic structural diagram of a vehicle 1 according to an embodiment of the present application is shown, where the vehicle 1 may be a fuel-oil vehicle, a gas-fired vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended range vehicle. The motor 20, the controller 30 and the battery 10 may be provided inside the vehicle 1, and the controller 30 is configured to control the battery 10 to supply power to the motor 20. For example, the battery 10 may be provided at the bottom or the head or the tail of the vehicle 1. The battery 10 may be used for power supply of the vehicle 1, e.g. the battery 10 may be used as an operating power source for the vehicle 1, for electrical circuitry of the vehicle 1, e.g. for start-up, navigation and operational power requirements of the vehicle 1. In another embodiment of the present application, the battery 10 may not only serve as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, instead of or in part instead of fuel oil or natural gas, to provide driving power for the vehicle 1.

To meet different power requirements, the battery 10 may include a plurality of battery cells 12, where the plurality of battery cells 12 may be connected in series or parallel or a series-parallel connection, where a series-parallel connection refers to a mixture of series and parallel connections.

As shown in fig. 2, one of the schematic structural diagrams of the battery 10 according to one embodiment of the present application is shown. The battery 10 includes a battery 10, a battery case 11, and a plurality of battery cells 12, wherein the battery cells 12 are accommodated in the battery case 11. The battery case 11 is used to provide an assembly space for the battery cells 12, and the battery case 11 may have various structures.

In some embodiments, as shown in fig. 3 and 4, fig. 3 is a second schematic structural diagram of the battery 10 according to some embodiments of the present application. The battery case 11 may include a frame 14 and a middle support 13.

The frame 14 forms a cavity for accommodating the battery cells 12, and the frame 14 has an end plate 141 for connecting with the middle support 13, the main plate body 1311 of the middle support 13 is disposed in the cavity, and the main plate body 1311 is connected with the end plate 141 of the frame 14, and the main plate body 1311 can play a role in reinforcing the strength of the frame 14 and separating the battery cells 12. The cavity formed by the frame 14 may be provided with two open sides, and the battery box 11 may further include a first box cover and a second box cover, where the first box cover and the second box cover are respectively covered on two open sides of the cavity, so as to define the cavity together with the frame 14 and seal the cavity. Wherein, one of the first case lid and the second case lid can be provided integrally with the frame 14, so that the assembly is facilitated. Of course, the battery case 11 formed by the frame 14 may have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

Referring to fig. 2, fig. 2 is a schematic partial structure of a battery 10 according to some embodiments of the present application. The battery 10 includes at least two rows of battery cells 12, each row of battery cells 12 including a plurality of battery cells 12 arranged along a first direction X, the at least two rows of battery cells 12 being arranged along a second direction Y. The first direction X and the second direction Y are the longitudinal direction of the battery case 11 and the width direction of the battery case 11, respectively, and are perpendicular to each other.

Taking the battery case 11 as a rectangular parallelepiped, two end plates 141 of the frame 14 are disposed in the first direction, and the two end plates 141 are disposed opposite to each other along the first direction. The main plate body 1311 of the middle support member 13 extends along the first direction, two ends of the main plate body 1311 are respectively connected with the two end plates 141, and the main plate body 1311 is disposed between two adjacent rows of the battery cells 12 and is used for separating the two adjacent rows of the battery cells 12.

Taking the example of two rows of battery cells 12. As shown in fig. 4, fig. 4 is an enlarged view at a in fig. 3. The support plate 132 of the middle support 13 is connected to the main plate body 1311, and the main plate body 1311 may also extend in the first direction, and the battery cell 12 may be supported on the support plate 132. In the present embodiment, in the second direction, one end of the battery unit 12 near the frame 14 may be supported by two side frames 14, the flange 1312 is disposed at the bottom of the cavity, and the support plate 132 is connected to the flange 1312 and disposed at the bottom of the cavity, and is supported at one end of the battery unit 12 far from the side frame 14. Through the one end that keeps away from frame 14 with backup pad 132 support at battery cell 12, the bearing capacity of the one end that battery cell 12 kept away from frame 14 passes through backup pad 132 and transmits to mainboard body 1311, and the rethread mainboard body 1311 transmits to end plate 141, through the frame construction bearing capacity of whole frame 14, plays supplementary first case lid and supports the effect of battery cell 12, promotes the structural strength of battery box 11, reduces the deformation of battery box 11 bottom.

When the battery cells 12 are provided in three or more rows, the battery cells 12 in the middle row or rows are supported on the support plate 132 at both ends in the second direction.

In the battery 10, the plurality of battery cells 12 may be connected in series or parallel or a series-parallel connection, wherein a series-parallel connection refers to that the plurality of battery cells 12 are connected in series or parallel. The plurality of battery cells 12 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery cells 12 is accommodated in the battery box 11; of course, the battery 10 may also be a form of a plurality of battery cells 12 connected in series or parallel or series-parallel to form a battery 10 module, and a plurality of battery 10 modules connected in series or parallel or series-parallel to form a whole and accommodated in the battery case 11. The battery 10 may also include other structures, for example, the battery 10 may also include a bus bar member for making electrical connection between the plurality of battery cells 12.

Wherein each battery cell 12 may be a secondary battery 10 or a primary battery 10; but not limited to, lithium sulfur battery 10, sodium ion battery 10, or magnesium ion battery 10. The battery cells 12 may be cylindrical, flat, rectangular, or otherwise shaped. Illustratively, in fig. 2, the battery cell 12 is rectangular in shape.

Referring to fig. 3 to 5, fig. 5 is a third schematic structural view of a battery 10 according to some embodiments of the present application. The application provides a middle support 13 of a battery box 11, wherein the middle support 13 comprises a middle side plate 131 and a support plate 132. The middle side plate 131 comprises a main plate body 1311 and a flange 1312 connected with the main plate body 1311, the main plate body 1311 is used for being connected with an end plate 141 of a frame 14 of the battery box 11 and separating two adjacent rows of battery cells 12, and the supporting plate 132 is connected with the flange 1312 and is used for supporting the battery cells 12.

The main board 1311 is connected with the end plate 141 of the frame 14 of the battery box 11, so that the main board 1311 and the frame 14 are connected to form a frame structure to jointly bear the acting force borne by the battery box 11. The flange 1312 is connected with the main board 1311, and the flange 1312 is connected with the support board 132, and the acting force borne by the support board 132 is transferred to the main board 1311 through the flange 1312, and then transferred to the frame 14 of the battery box 11, and the acting force is borne by the whole frame structure together.

The flange 1312 and the main plate 1311 may be integrally formed, and the main plate and the flange 1312 may be formed by machining, stamping, bending, or the like.

In the related art, some middle supporting pieces of the battery box body are integrally extruded and formed by aluminum materials, and the middle supporting pieces are insufficient in strength of connecting structures when being connected with frames of the battery box body, and easily have risks of structural failure caused by cracking after long-time use.

According to the technical scheme, the middle supporting piece 13 is divided into the middle side plate 131 and the supporting plate 132, so that the middle supporting piece 13 is flexibly designed, different materials can be selected for the middle side plate 131 and the supporting plate 132, the connection structure and the connection mode of the main plate 1311 and the end plate 141 of the frame 14 can be optimized, the connection strength of the main plate 1311 and the end plate 141 can be improved, the material of the supporting plate 132 and the connection mode of the flange 1312 can be flexibly selected, the assembly is facilitated, the production cost is reduced, and the integral structural strength can be effectively optimized.

Through well curb plate 131 and backup pad 132 cooperation support battery monomer 12, reduce to receive the condition that gravity influence undercut leads to battery box 11 bottom to warp between two rows of battery monomer 12, guarantee the planarization of battery box 11 bottom, promote the structural strength of battery box 11 to promote battery box 11's life and security performance.

As shown in fig. 7, fig. 7 is one of schematic structural diagrams of the middle side plate 131 according to some embodiments of the present application. According to some embodiments of the present application, the flange 1312 may include multiple sections, at least two sections of the flange 1312 being folded toward different sides of the main panel body 1311.

In the present embodiment, the flange 1312 is formed by bending a main plate 1311. The flange 1312 serves to connect the support plate 132 and the main plate 1311, so that the middle plate 131 can support the battery cells 12 on both sides thereof, and the flange 1312 includes multiple sections, and at least two sections of flanges 1312 bend towards different sides of the main plate 1311 to support the battery cells 12 on both sides.

In some embodiments, the adjacent two flanges 1312 are oriented differently, so that the main board 1311 is relatively uniformly stressed in the first direction, and the structure is more stable.

As shown in fig. 7, adjacent two segments of flange 1312 may be spaced apart in accordance with some embodiments of the present application.

Through setting up adjacent two sections of turn-ups 1312 at intervals, be difficult for because the stress concentration takes place between the junction of adjacent two sections of turn-ups 1312 and lead to the inefficacy, guarantee structural stability to be convenient for production and processing when producing.

As shown in fig. 7, according to some embodiments of the present application, both ends of the main plate body 1311 may have connection sections 13112 for connection with the end plates 141, and the connection sections 13112 may have a size in the height direction of the main plate body 1311 not more than a main body portion of the main plate body 1311.

The main board 1311 plays a role of supporting the battery cells 12 and also plays a role of separating the two rows of battery cells 12, and in this embodiment, in order to perform effective separation and improve structural strength, the height of the main body portion of the main board 1311 is similar to or the same as the height of the frame 14. The end plate 141 of the box body is provided with a connecting groove 1411 for the connecting section 13112 to penetrate through, the length of the connecting groove 1411 is the same as the height of the connecting section 13112 or slightly larger than the height of the connecting section 13112, the connecting section 13112 penetrates out of the connecting groove 1411 and is fixedly connected with the end plate 141 so as to realize the connection of the main plate 1311 and the end plate 141, the size of the connecting section 13112 in the height direction of the main plate 1311 is not larger than the size of the main body part of the main plate 1311 in the height direction of the main plate 1311, the length of the connecting groove 1411 can be reduced, the integral mechanical property of the end plate 141 is influenced by the connecting groove 1411 to be reduced, and the integral structural strength is improved.

In this embodiment, the connecting section 13112 may be welded to the end plate 141, so that the mechanical performance is better and the sealing performance is better.

In other embodiments, the connection segment 13112 may be connected to the end plate 141 by a bolt connection or the like.

Referring to fig. 4, fig. 7, fig. 8 and fig. 10, fig. 8 is an enlarged view of fig. 7 at C, and fig. 10 is a schematic structural view of a support plate 132 according to some embodiments of the present application. According to some embodiments of the present application, at least one flange 1312 may be provided with a first positioning hole 13121, the support plate 132 may be provided with a second positioning hole 1322, and the first positioning hole 13121 and the second positioning hole 1322 may be in positioning fit by the positioning pin 133.

The first positioning hole 13121 may penetrate through the flange 1312, or the first positioning hole 13121 is formed on one side of the flange 1312 facing the support plate 132, the second positioning hole 1322 is formed through the support plate 132, and the positioning pin 133 may penetrate through the second positioning hole 1322 into the first positioning hole 13121, so as to limit the flange 1312 and the support plate 132, so that the flange 1312 and the support plate 132 cannot move relatively during assembly, and assembly is facilitated.

It can be appreciated that the first positioning holes 13121 may be provided with a plurality of first positioning holes 13121, the second positioning holes 1322 may be provided with a plurality of second positioning holes 1322, and the first positioning holes 13121 and the second positioning holes 1322 are in one-to-one correspondence, so as to improve the limiting effect.

For example, the positioning pin 133 may be a rivet that passes through the first positioning hole 13121 and the second positioning hole 1322 to achieve a limited connection of the flange 1312 to the support plate 132. Or, the positioning pin 133 may be provided with external threads, the first positioning hole 13121 may be a threaded hole, the positioning pin 133 is in threaded fit with the first positioning hole 13121, and the positioning pin 133 is at least partially located in the second positioning hole 1322, so as to realize limit connection between the flange 1312 and the support plate 132.

Referring to fig. 6 and 9, fig. 9 is an enlarged view of fig. 7 at D. According to some embodiments of the present application, the main board 1311 is provided with a first limiting portion 13111 at a side provided with the flange 1312, the supporting board 132 is provided with a second limiting portion 1321, and the first positioning hole 13121 is opposite to the second positioning hole 1322 under the condition that the first limiting portion 13111 and the second limiting portion 1321 are in limiting fit with the first end of the middle supporting member 13 in the length direction.

When the main board 1311 is matched and connected with the support plate 132, the first limiting part 13111 and the second limiting part 1321 limit the position in the first direction, so that the main board 1311 is conveniently positioned and connected with the support plate 132, when the main board 1311 is matched and matched with the support plate 132, the first positioning hole 13121 and the second positioning hole 1322 are just right opposite, the first positioning hole 13121 and the second positioning hole 1322 are matched and limited through the positioning pin 133, and the matched and connected between the middle side board 131 and the support plate 132 is realized.

In the present embodiment, the first limiting portion 13111 is in limiting engagement with the second limiting portion 1321 at a first end of the middle support 13 in the length direction, specifically, the first limiting portion 13111 may be disposed at a first end of the main plate body 1311 in the first direction, and the second limiting portion 1321 may be disposed at a first end of the support plate 132 in the first direction; accordingly, the first positioning hole 13121 and the second positioning hole 1322 may be disposed near the second end of the middle support 13, the first positioning hole 13121 may be disposed near the second end of the main plate body 1311 in the first direction, and the second positioning hole 1322 may be disposed correspondingly at the second end of the support plate 132 in the first direction. By attaching the middle side plate 131 and the support plate 132 to

By providing the first and second stopper portions 13111 and 1321, the fit connection of the middle side plate 131 and the support plate 132 is facilitated, and the reliability of the connection is improved.

As shown in fig. 6 and 9, according to some embodiments of the present application, the first limiting portion 13111 may be a protrusion, and a protruding height of the first limiting portion 13111 in a height direction of the main plate body 1311 may be higher than the flange 1312; the second limiting portion 1321 may be a groove, and may be disposed open at an end of the supporting plate 132.

In this embodiment, the support plate 132 and the middle side plate 131 are assembled along the first direction, and the first limiting portion 13111 is set to be a protrusion, and the protrusion height is higher than the flange 1312, so that the protrusion can stop with the support plate 132 during the assembly process, thereby playing a limiting role. The second limiting portion 1321 may be configured as a groove body and is disposed at an end of the supporting plate 132 in an open manner, specifically, the groove body is disposed at an end of the supporting plate 132 in the first direction, so that the protrusion may slide into the groove body when assembled in the first direction, and stop at a bottom of the groove body, and limit the protrusion in the second direction by providing the groove body, so as to improve a limiting effect in each direction.

In some embodiments, the first stop 13111 may be a slot and the second stop 1321 may be a protrusion that may extend into the slot and stop against the stop.

As shown in fig. 4 and 10, according to some embodiments of the present application, the support plate 132 may include a receiving slot 1323 and an opening 1324 communicating with the receiving slot 1323, the opening 1324 is located on an upper surface of the support plate 132, the flange 1312 is located in the receiving slot 1323, and the main plate body 1311 protrudes from the opening 1324.

In this embodiment, the flange 1312 is disposed in the accommodating groove 1323 to realize the fit connection between the flange 1312 and the support plate 132, and the flange 1312 is limited with respect to the accommodating groove 1323, so that the installation is simple. Extension of the main plate body 1311 is facilitated by the provision of an opening 1324 so that the main plate body 1311 may extend into the cavity. The accommodating groove 1323 extends along the first direction, two ends of the accommodating groove 1323 in the first direction can be opened, two ends of the opening 1324 in the first direction can also be opened, when the middle side plate 131 is assembled with the supporting plate 132, the position of the opening 1324 is opposite to the main plate 1311, the position of the accommodating groove 1323 is opposite to the flange 1312, and the assembly can be completed by pushing the middle side plate 131 or the supporting plate 132 along the first direction.

In this embodiment, taking the first position-limiting portion 13111 as an example, the second end of the middle side plate 131 may be assembled from the first end to the second end of the support plate 132, and when the first position-limiting portion 13111 is in position-limited fit with the second position-limiting portion 1321, the first positioning hole 13121 and the second positioning hole 1322 are in position-limited fit with each other through the positioning pin 133, so as to realize the assembly of the middle support 13.

As shown in fig. 10, according to some embodiments of the present application, the support plate 132 includes a first section 1325, a second section 1326 and a third section 1327 connected in sequence, the first section 1325 and the third section 1327 are connected to both sides of the second section 1326, respectively, and bent toward the same side of the second section 1326 to be disposed opposite to the second section 1326 to form the receiving groove 1323, and the first section 1325 is spaced apart from the second section 1326 to form the opening 1324.

The second section 1326 is connected to the bottom surface of the flange 1312, and the second limiting portion 1321 and the second positioning hole 1322 are both disposed on the second section 1326. The first section 1325 and the third section 1327 are respectively disposed on two sides of the main board 1311 in the second direction, and the flange 1312 is limited in the second direction and the height direction by bending the first section 1325 and the third section 1327 towards the same side of the second section 1326 to be disposed opposite to the second section 1326.

As shown in fig. 7 and 10, according to some embodiments of the present application, the middle side plate 131 may be press-formed, and the support plate 132 may be aluminum extrusion-formed.

The middle side plate 131 needs to be provided with a flange 1312 and connected with the end plate 141, and the middle side plate 131 may be made of a material that can be formed by punching and has good weldability with the end plate 141, for example, a 5-series aluminum alloy material may be used for the middle side plate 131, an AL5083 material may be selected, and specific materials are not limited herein. The support plate 132 only plays a supporting role, has a simple structure, can be formed by extrusion of aluminum materials, has enough structural strength and is simple to produce, and the support plate 132 can be made of 6-series aluminum alloy materials by way of example. The middle side plate 131 and the support plate 132 are assembled after being molded separately.

As shown in fig. 11 to 13, fig. 11 is a schematic structural view of a middle support 13 according to some embodiments of the present application, fig. 12 is a schematic structural view of a second middle side plate according to some embodiments of the present application, and fig. 13 is a schematic structural view of a second support plate according to some embodiments of the present application. According to some embodiments of the present application, the middle side plate 131 may be a metal material, the support plate 132 may be a plastic material, and the middle side plate 131 may be integrally formed with the support plate 132.

The middle side plate 131 may be a 5-series aluminum alloy material or a 6-series aluminum alloy material; the support plate 132 may be PPS (polyphenylene sulfide) material, or a material such as silicone rubber, fluororubber, butyl rubber, or the like.

In the present embodiment, the middle side plate 131 is required to be flanged 1312 and connected to the end plate 141, and the middle side plate 131 may be a material that can be press-formed and has good weldability with the end plate 141, and is not limited thereto. The supporting plate 132 can be made of plastic material, and during production, the middle side plate 131 can be directly formed integrally with the supporting plate 132, specifically, the flanging 1312 of the middle side plate 131 is directly formed by injection molding with the supporting plate 132, so that the process is simple, and the production and the transportation are easy.

According to some embodiments of the present application, the present application further provides a battery box 11, including a frame 14 and a middle support 13 according to any of the above aspects, where the frame 14 forms a cavity for accommodating the battery cell 12, and the main board 1311 is connected to the end plate 141 of the frame 14.

In some embodiments, the body plate 1311 is welded to the bezel 14, and the body plate 1311 and the bezel 14 may be a non-heat treatable aluminum alloy and a heat treatable aluminum alloy, respectively.

The main plate body 1311 may be a non-heat treatable aluminum alloy such as a 4-series aluminum alloy material or a 5-series aluminum alloy material, and the bezel 14 may be a heat treatable aluminum alloy such as a 6-series aluminum alloy material and a 7-series aluminum alloy material.

In this embodiment, the frame 14 and the end plate 141 of the frame 14 may be made of a 6-series aluminum alloy material, specifically may be made of an AL6063 material, and the main plate 1311 may be made of a 5-series aluminum alloy material, specifically may be made of an AL5083 material.

According to some embodiments of the present application, the present application further provides a battery 10, where the battery 10 includes at least two rows of battery cells 12 and the battery case 11 according to any one of the above schemes, the battery cells 12 are accommodated in the cavity, and the main board 1311 separates two adjacent rows of battery cells 12, and one end of the battery cell 12 away from the frame 14 is supported by the support board 132.

According to some embodiments of the present application, there is also provided an electrical device comprising a battery 10 according to any of the above aspects, and the battery 10 is used to provide electrical energy to the electrical device.

The powered device may be any of the devices or systems described above that employ the battery 10.

According to some embodiments of the present application, referring to fig. 3 to 10, there is provided a battery case 11 including a rim 14 and a middle support 13, the middle support 13 including a middle side plate 131 and a support plate 132 arranged along a first direction.

The middle side plate 131 comprises a main plate body 1311 and a flange 1312, the support plate 132 is connected with the flange 1312, the middle side plate 131 is made of AL5083 material, the main plate body 1311 and the flange 1312 are formed by stamping, the flange 1312 is arranged at the bottom of the main plate body 1311 and is provided with multiple sections, two adjacent sections of flanges 1312 are bent towards different sides of the main plate body 1311, and the two adjacent sections of flanges 1312 are arranged at intervals in the first direction.

The support plate 132 can be formed by extrusion of 6 AL profiles, the support plate 132 is provided with a receiving slot 1323 extending along a first direction, two ends of the receiving slot 1323 in the first direction are opened, the flange 1312 is arranged in the receiving slot 1323, an opening 1324 communicated to the receiving slot 1323 is arranged on the upper side of the support plate 132, and the main board 1311 extends out from the opening 1324.

The main board body 1311 is provided with a first limiting portion 13111 at a first end in the first direction, the first end of the supporting board 132 is provided with a second limiting portion 1321, and the first limiting portion 13111 is limited by matching with the second limiting portion 1321. The flange 1312 is provided with a first positioning hole 13121 near the second end of the main board body 1311, the supporting board 132 is provided with a second positioning hole 1322, and the first positioning hole 13121 corresponds to the second positioning hole 1322 and is in positioning fit with the positioning pin 133 under the condition that the first limiting part 13111 is matched with the second limiting part 1321.

The two end plates 141 of the frame 14 in the first direction are made of AL6063 material, the two ends of the main plate body 1311 in the first direction are provided with connecting sections 13112, the two end plates 141 are provided with connecting grooves 1411, the connecting sections 13112 extend into the corresponding connecting grooves 1411 and are welded with the end plates 141, and the supporting plates 132 can be used for supporting the battery cells 12.

It should be noted that, without conflict, the embodiments and features of the embodiments in the present application may be combined with each other.

The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A middle support for a battery compartment, comprising:

2. The center support of claim 1, wherein the flange comprises a plurality of segments, at least two segments of the flange being folded toward different sides of the main panel.

3. The center support of claim 2, wherein adjacent two of said flanges are spaced apart.

4. The middle support of a battery case according to claim 1, wherein both ends of the main plate body have connection sections for connection with the end plates, and the connection sections have a dimension in the main plate body height direction not exceeding a dimension of the main body portion of the main plate body in the main plate body height direction.

5. The middle support of claim 1, wherein at least one of the flanges is provided with a first positioning hole, the support plate is provided with a second positioning hole, and the first positioning hole is in positioning fit with the second positioning hole through a positioning pin.

6. The middle support member of claim 5, wherein the main plate body is provided with a first limiting portion at a side provided with the flange, the support plate is provided with a second limiting portion, and the first positioning hole is opposite to the second positioning hole under the condition that the first limiting portion and the second limiting portion are in limiting fit with the first end of the middle support member in the length direction.

7. The middle support of the battery box according to claim 6, wherein the first limiting portion is a protrusion, and a protruding height of the first limiting portion in the main plate height direction is higher than the flange; the second limiting part is a groove body and is opened at the end part of the supporting plate.

8. The middle support of a battery box according to claim 1, wherein the support plate includes a receiving groove and an opening communicating with the receiving groove, the opening is located on an upper surface of the support plate, the flange is located in the receiving groove, and the main plate body protrudes from the opening.

9. The middle support of the battery case according to claim 8, wherein the support plate comprises: the first section, the second section and the third section that link to each other in proper order, the first section with the third section respectively with the both sides of second section link to each other, and towards the homonymy of second section buckle to with the second section sets up relatively in order to form the holding tank, the first section with the second section interval is in order to form the opening.

10. The middle support of a battery case according to any one of claims 1 to 4, wherein the middle side plate is a metal material, the support plate is a plastic material, and the middle side plate and the support plate are integrally formed.

11. A battery box, comprising:

the frame forms a cavity for accommodating the battery monomer;

the mid-section support of any one of claims 1-10 wherein the main panel body is connected to an end panel of the rim.

12. The battery box of claim 11, wherein the main plate body is welded to the frame, and the main plate and the frame are respectively a non-heat treatable aluminum alloy and a heat treatable aluminum alloy.

13. A battery, comprising:

at least two rows of battery cells;

the battery box of claim 11 or 12, wherein the battery cells are accommodated in the cavity, and the main plate separates two adjacent rows of battery cells, and the battery cells are supported on the support plate.

14. An electrical device, comprising:

the battery of claim 13, for providing electrical energy.