Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment, and relates to the technical field of batteries, the battery device comprises a stamping box body and a non-metal buffer piece, the stamping box body is provided with a bottom wall and a surrounding wall, the surrounding wall is formed on one side of the bottom wall, the surrounding wall and the bottom wall jointly define a mounting cavity, and a battery monomer is arranged in the mounting cavity; and the non-metal buffer piece is at least arranged between the battery monomer and the enclosure bulkhead so as to collapse and absorb energy when the enclosure bulkhead is collided. According to the technical scheme provided by the invention, the stamping box body is used for loading the single battery, the purpose of lightweight design can be achieved, the non-metal buffer piece is arranged between the single battery and the enclosure bulkhead, and when the enclosure bulkhead of the stamping box body is impacted, the non-metal buffer piece can crumple to absorb impact energy, so that the impact force of the battery is reduced, and the service life of the battery is prolonged. Therefore, the effect of protecting the single batteries in the mounting cavity is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a battery device and an electric equipment. BACKGROUND

[0002] In the existing new energy power battery pack, the aluminum profile box body is a relatively common box body structure, and the battery monomer is abutted against the side wall of the aluminum profile box body, which can ensure the stability of the overall structure. However, when the side wall of the aluminum profile box body is subjected to impact, the battery monomer loaded in the aluminum profile box body is easy to be damaged by extrusion. In addition, the weight of the aluminum profile box body is usually heavy, which does not meet the lightweight design trend of the power battery pack. CONTENT OF THE UTILITY MODEL

[0003] The main purpose of the present application is to provide a battery device and an electric equipment, which aims to improve the problem that the existing aluminum profile box body is heavy and the side wall thereof is easy to be damaged by extrusion when subjected to external impact.

[0004] In a first aspect, the battery device provided by the present application comprises:

[0005] The stamping box body has a bottom wall and a surrounding wall, the surrounding wall is formed on one side of the bottom wall, and the surrounding wall and the bottom wall jointly define a mounting cavity, and the mounting cavity is provided with a battery monomer; and

[0006] The non-metallic buffer member is arranged at least between the battery monomer and the surrounding wall to collapse and absorb energy when the surrounding wall is subjected to impact.

[0007] The technical scheme provided by the present application increases the spacing between the battery monomer and the surrounding wall by arranging the non-metallic buffer member between the battery monomer and the surrounding wall, thereby giving the surrounding wall sufficient deformation allowance. During the impact process of the surrounding wall of the battery device, the surrounding wall can absorb more impact energy through its continuous deformation, and the non-metallic buffer member can collapse based on its structural characteristics to absorb the remaining impact energy. Finally, the impact energy acting on the battery monomer is effectively weakened, which improves the problem that the battery monomer in the mounting cavity is deformed and damaged due to extrusion, and plays a role in protecting the battery monomer. Furthermore, by designing the stamping box body to load the battery monomer, the use of metal materials can be reduced, and by matching the non-metallic buffer member, the lightweight design requirement of the battery device is met on the basis of ensuring sufficient side impact resistance of the battery device.

[0008] In some embodiments, the surrounding wall comprises two side impact protection walls which are opposite along a first direction and extend along a second direction, and the side impact protection walls are arranged close to the side of the electric equipment.

[0009] The non-metallic buffer member is arranged at least corresponding to one of the side impact protection walls.

[0010] The non-metallic buffer is arranged corresponding to at least one of the side impact walls, so that the impact resistance of the stamping box at the side impact wall is improved. Since the side impact wall is arranged on the side of the electrical equipment which is relatively weak in protection, the stamping box can also protect the battery monomer inside when the battery device is impacted by external force from the side of the electrical equipment.

[0011] In some embodiments, an end surface of the non-metallic buffer away from the bottom wall is formed with a wire passing groove penetrating in the second direction.

[0012] The wire passing groove penetrating in the second direction is arranged on the non-metallic buffer, so that the non-metallic buffer is utilized as a mounting base, and various conductive wire harnesses in the battery device can be buried in the wire passing groove. On one hand, the wire harness arrangement is neat, and on the other hand, the conductive wire harnesses and the battery monomers are prevented from exchanging heat and causing adverse effects.

[0013] In some embodiments, the non-metallic buffer is arranged between the two side impact walls and the battery monomers.

[0014] The non-metallic buffer is arranged between the two side impact walls and the battery monomers, which means that the battery device is provided with the non-metallic buffer for buffering on both sides close to the width direction of the vehicle after being correctly mounted on the vehicle, so that more perfect protection can be provided for the side impact condition of the vehicle.

[0015] In some embodiments, the non-metallic buffer comprises a plurality of buffer segments arranged in a head-to-tail manner along the circumference of the surrounding wall.

[0016] The non-metallic buffer is composed of a plurality of buffer segments, which can reduce the forming difficulty of the non-metallic buffer and the requirement for production equipment, and can also form non-metallic buffers of different lengths by combining the plurality of buffer segments, so as to adapt to stamping boxes of different sizes.

[0017] In some embodiments, an accommodation groove is formed on an end surface of the non-metallic buffer away from the surrounding wall, and the accommodation groove penetrates the non-metallic buffer and is arranged towards the bottom wall.

[0018] The battery device further comprises a heat exchange plate and a carrier. The carrier is arranged on the bottom wall and accommodated in the accommodation groove, and the heat exchange plate is arranged on the carrier corresponding to the battery monomer.

[0019] The accommodation groove is arranged on the non-metallic buffer, and the bearing part bearing the heat exchange plate is accommodated in the accommodation groove. Since the heat exchange plate is usually arranged between two adjacent battery monomers or between the battery monomer and the surrounding wall, along the extension direction of the non-metallic buffer, the bearing part supporting the heat exchange plate is usually misaligned with the battery monomer to a certain extent. The arrangement of the accommodation groove on the non-metallic buffer has little effect on the non-metallic buffer, and the non-metallic buffer can still provide buffer protection for most of the side walls of the battery monomer. On the other hand, due to the arrangement of the accommodation groove, the non-metallic buffer and the bearing part can jointly utilize the installation cavity space between the battery monomer and the surrounding wall, so that the layout in the installation cavity is more compact, which is beneficial to improving the energy density of the battery device.

[0020] In some embodiments, the bearing part comprises conductive foam.

[0021] The bearing part is arranged as conductive foam, which can provide protection for the heat exchange plate on the one hand, and can realize equal potential connection between the heat exchange plate and the stamping box on the other hand due to the conductivity of the conductive foam, thereby preventing accidents caused by excessive potential difference between the stamping box and the heat exchange plate.

[0022] In some embodiments, the non-metallic buffer is arranged in two along a first direction, and the battery monomer is arranged between the two non-metallic buffers.

[0023] The accommodation groove and the bearing part correspond in groups, and two groups are arranged corresponding to the two non-metallic buffers.

[0024] The two ends of the heat exchange plate along the first direction are arranged in the two bearing parts respectively.

[0025] The accommodation groove and the bearing part correspond in groups, and two groups are arranged corresponding to the two non-metallic buffers.

[0026] In some embodiments, the battery monomer is arranged in multiple, and arranged along a second direction, and correspondingly, the non-metallic buffer extends along the second direction.

[0027] The heat exchange plate, the bearing part and the accommodation groove correspond in groups, and multiple groups are arranged corresponding to the multiple rows of battery monomers.

[0028] The heat exchange plate, the bearing part and the accommodation groove correspond in groups, and multiple groups are arranged corresponding to the multiple rows of battery monomers.

[0029] In some embodiments, the non-metallic buffer is provided with a positioning groove extending along the second direction on an end surface facing away from the bottom wall.

[0030] Corresponding to the non-metallic buffer, end portions of the plurality of heat exchange plates are communicatively arranged through a connecting pipe extending along the second direction, and the connecting pipe is arranged in the positioning groove.

[0031] In this way, since the connecting pipes of the plurality of heat exchange plates extend along the second direction, the positioning groove is also arranged on the non-metallic buffer along the second direction, thereby providing a positioning basis for the connecting pipes, and a connection relationship is generated between the stamping box, the non-metallic buffer, and the heat exchange plates, thereby improving the installation stability of each component in the battery device.

[0032] In some embodiments, structural glue is arranged between the non-metallic buffer and the surrounding wall, and / or between the non-metallic buffer and the bottom wall.

[0033] In this way, the structural glue is arranged between the non-metallic buffer and the surrounding wall and the bottom wall of the stamping box, and the non-metallic buffer is fixed in the stamping box by adhesion, without the need to make structural improvements to the stamping box for the non-metallic buffer, thereby controlling the necessary cost of arranging the non-metallic buffer in the battery device.

[0034] In some embodiments, the non-metallic buffer comprises buffer foam.

[0035] In this way, the non-metallic buffer is arranged as buffer foam, which can play a role of buffering and energy absorption by virtue of its excellent elastic properties, and can better meet the lightweight design requirements of the stamping box due to its low material density.

[0036] In some embodiments, the material of the buffer foam comprises modified polyphenyl ether foam or rigid foamed polyurethane foam.

[0037] In this way, the modified polyphenyl ether foam and the rigid foamed polyurethane foam both belong to high-strength foamed buffer foam, and the foaming ratio thereof is between 2 and 10 times, and the density after foaming is large, so that the foamed buffer foam can be used as a reinforcing material of the stamping box.

[0038] In a second aspect, the present application further provides a power utilization device, which comprises the above battery device, and the battery device is used to provide electric energy. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the accompanying drawings in the following description only only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in the drawings without creative labor.

[0040] Figure 1 The structure diagram of an embodiment of the vehicle provided by the present application is shown in the following figure.

[0041] Figure 2 The exploded structure diagram of an embodiment of the battery device provided by the present application is shown in the following figure.

[0042] Figure 3 The three-dimensional structure diagram of an embodiment of the stamping box in the battery device provided by the present application is shown in the following figure.

[0043] Figure 4 The top view structure diagram of an embodiment of the stamping box in the battery device provided by the present application is shown in the following figure.

[0044] Figure 5 The structure diagram of the cross section A-A in the above figure is shown in the following figure. Figure 4

[0045] The enlarged structure diagram of the local part B in the above figure is shown in the following figure. Figure 6 Figure 5 The structure diagram of the cross section C-C in the above figure is shown in the following figure.

[0046] Figure 7 Figure 4 The enlarged structure diagram of the local part D in the above figure is shown in the following figure.

[0047] Figure 8 The enlarged structure diagram of the local part E in the above figure is shown in the following figure. Figure 7

[0048] Figure 9 Figure 4 Explanation of figure mark:

[0049] 1000, vehicle;

[0050] 100, battery device; 200, controller; 300, motor;

[0051]

[0052] ​​​​​1 punch box; 1a mounting cavity; 11 bottom wall; 12 surrounding wall; 121 side impact protection wall; 2 non-metallic buffer; 2a wire passing groove; 2b accommodation groove; 2c positioning groove; 21 buffer foam; 22 buffer section; 3 battery monomer; 4 heat exchange plate; 41 connecting pipe; 5 bearing; 51 conductive foam; 6 structural adhesive; 7 cover plate; X first direction; Y second direction.

[0053] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0054] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments of the present application, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0056] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly and specifically limited.

[0057] In this paper, the reference to "embodiments" means that the specific features, structures or properties described in conjunction with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. The skilled person in the art explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.

[0058] In the description of the embodiments of the present application, the term "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0059] In the description of the embodiments of the present application, the orientations or positional relationships indicated by the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0060] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0061] In the existing new energy power battery pack, the aluminum profile box body is a relatively common box body structure. In the aluminum profile box body, in order to ensure the installation stability of the battery monomer, the battery monomer is usually abutted against the side wall of the aluminum profile box body. However, when the side wall of the aluminum profile box body is subjected to impact, the deformation of the side wall will directly extrude the battery monomer, and the battery monomer loaded therein is easy to be damaged by extrusion. At the same time, the aluminum profile box body generally uses more material, resulting in that its weight is usually heavier, which does not meet the lightweight design trend of the power battery pack.

[0062] In the prior art in the field, most of them are concerned with improving the impact resistance of the aluminum profile box body to protect the battery monomer. The cavity existing in the aluminum profile is filled with a buffer structure to improve the impact resistance of the aluminum profile box body. When the aluminum profile is subjected to external impact, the buffer structure in the cavity can absorb impact energy and prevent the aluminum profile as a whole from deforming, thereby protecting the battery monomer in the box body. However, this scheme only focuses on improving the impact resistance of the aluminum profile box body, but ignores the problem of its heavy weight. How to ensure the side collision resistance of the power battery pack box body while reducing the weight of the box body is a technical problem that needs to be solved by those skilled in the art.

[0063] It is known through analysis that the side wall of the aluminum profile box directly contacts the battery monomer, and the deformation of the side wall caused by the impact directly acts on the battery monomer. Therefore, a buffer component can be added between the side wall of the aluminum profile box and the battery monomer to improve this problem. The side wall cavity of the aluminum profile box is a non-essential structure, and the box can be formed by other processes. The aluminum profile box itself uses more materials, which inevitably leads to poor lightweight performance. Therefore, a stamping process can be used to directly form the box. The stamping box uses less material and is lighter in weight, and has good sealing performance.

[0064] The battery device provided by the embodiments of the present application can be used to provide electric energy for an electric device, wherein the electric device can be, but is not limited to, a battery car, an electric vehicle, a ship, a spacecraft, etc. The spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0065] The following embodiments are described by taking a vehicle 1000 as an example for convenience of description.

[0066] Please refer to Figure 1 , Figure 1 The vehicle 1000 can be a fuel automobile, a gas automobile, or a new energy automobile. The new energy automobile can be a pure electric vehicle, a hybrid electric vehicle, or a range extended vehicle, etc. The vehicle 1000 is internally provided with a battery device 100, which can be arranged at the bottom, the head, or the tail of the vehicle 1000. The battery device 100 can be used to supply power to the vehicle 1000, for example, the battery device 100 can be used as the operating power supply of the vehicle 1000. The vehicle 1000 can further include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power demand of the vehicle 1000 during starting, navigation, and driving.

[0067] In some embodiments of the present application, the battery device 100 can not only be used as the operating power supply of the vehicle 1000, but also be used as the driving power supply of the vehicle 1000, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 1000.

[0068] The battery device 100 provided by the present application can be applied to an electric device, which can at least improve the problem that the existing aluminum profile box is heavy, and the side wall is easily crushed by the battery monomer under external impact.

[0069] For the convenience of understanding the battery device 100 provided by the present application, the following will be described with reference to the accompanying drawings, wherein, Figure 2 The exploded structural schematic view of an embodiment of the battery device provided by the present application; Figure 3A perspective view of an embodiment of the punched box body in the battery device provided in the present application is shown in FIG. 1. Figure 4 A top view of an embodiment of the punched box body in the battery device provided in the present application is shown in FIG. 2. Figure 5 A structure diagram of a cross section A-A in the embodiment is shown in FIG. 3. Figure 4 A structure diagram of a cross section B-B in the embodiment is shown in FIG. 4. Figure 6 A structure diagram of a cross section C-C in the embodiment is shown in FIG. 5. Figure 5 A structure diagram of a cross section D-D in the embodiment is shown in FIG. 6. Figure 7 A structure diagram of a cross section E-E in the embodiment is shown in FIG. 7. Figure 4 A structure diagram of a cross section F-F in the embodiment is shown in FIG. 8. Figure 8 A structure diagram of a cross section G-G in the embodiment is shown in FIG. 9. Figure 7 A structure diagram of a cross section H-H in the embodiment is shown in FIG. 10. Figure 9 A structure diagram of a cross section I-I in the embodiment is shown in FIG. 11. Figure 4 A structure diagram of a cross section J-J in the embodiment is shown in FIG. 12.

[0070] As shown in FIG. 1, the battery device 100 provided in the present application includes a punched box body 1 and a non-metallic buffer 2. Figures 2 to 4 In an embodiment of the present application, the battery device 100 includes a punched box body 1 and a non-metallic buffer 2. The punched box body 1 has a bottom wall 11 and a surrounding wall 12 formed on one side of the bottom wall 11. The surrounding wall 12 and the bottom wall 11 together define a mounting cavity 1a in which a battery monomer 3 is arranged. The non-metallic buffer 2 is arranged at least between the battery monomer 3 and the surrounding wall 12 to collapse and absorb energy when the surrounding wall 12 is impacted.

[0071] It should be noted that the punched box body 1 refers to a box structure integrally formed by a punching process. The bottom wall 11 and the surrounding wall 12 are usually integrally connected to define the mounting cavity 1a. The battery monomer 3 can be completely hidden in the mounting cavity 1a. In this case, the surrounding wall 12 of the punched box body 1 is at least higher than the battery monomer 3. The battery monomer 3 can also be partially hidden in the mounting cavity 1a. In this case, the surrounding wall 12 of the punched box body 1 is lower than the battery monomer 3. Regardless of whether the surrounding wall 12 of the punched box body 1 is high or low, the punched box body 1 can at least provide protection for the battery monomer 3 from the side and the bottom. The punched box body 1 is the main loading component of the battery device 100. The battery device 100 is mounted to an electric equipment through the punched box body 1, and the battery monomer 3 is mounted in the mounting cavity 1a of the punched box body 1 to store electric energy. Generally speaking, as shown in FIG. 1, the battery device 100 further includes a cover plate 7 arranged on the punched box body 1 to shield the cavity opening of the mounting cavity 1a. Figure 2

[0072] ​In the battery device 100, a plurality of battery cells 3 are generally included, which can be connected in series, in parallel, or in a mixed manner, where the mixed manner refers to a combination of series and parallel connection of the plurality of battery cells 3. The plurality of battery cells 3 can be directly connected in series, in parallel, or in a mixed manner, and the plurality of battery cells 3 are accommodated in the mounting cavity la of the stamping box body 1 as a whole. Of course, the plurality of battery cells 3 can be first connected in series, in parallel, or in a mixed manner to form a battery module, and the plurality of battery modules are connected in series, in parallel, or in a mixed manner to form the battery cells 3, which are accommodated in the mounting cavity la of the stamping box body 1. The battery device 100 can also include other structures, for example, the battery device 100 can also include a current collecting component for realizing electrical connection between the plurality of battery cells 3 or the plurality of battery modules, and can also include a heat exchange component for realizing thermal control of the battery cells 3. Each battery cell 3 can be a secondary battery or a primary battery, and can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 3 can be in the shape of a cylinder, a flat body, a cuboid, or other shapes.

[0073] The non-metallic buffer 2 is arranged between the battery cell 3 and the surrounding wall 12 of the stamping box body 1, and can resist the deformation of the surrounding wall 12 by collapsing itself when the surrounding wall 12 of the stamping box body 1 is subjected to external impact, thereby achieving the purpose of energy absorption, so that the energy ultimately acting on the battery cell 3 is weakened. The non-metallic buffer 2 is a non-metallic component with good impact resistance, such as a soft rubber component or a non-metallic foaming component (which has a plurality of cavities arranged in the direction of force, and plays a buffering role by continuously collapsing its structure), and the structure and specific non-metallic material thereof are not limited in the present embodiment. As long as the non-metallic buffer 2 is arranged between the battery cell 3 and the surrounding wall 12 of the stamping box body 1, it can buffer and block the impact force transmitted by the surrounding wall 12 of the stamping box body 1 to the battery cell 3. The non-metallic buffer 2 can be arranged in a spaced manner between the battery cell 3 and the surrounding wall 12 of the stamping box body 1 (not in contact with both), or can be supported and arranged between the two (in contact with both). The non-metallic buffer 2 is generally connected to the stamping box body 1, but is not limited thereto. In some examples, the non-metallic buffer 2 can be directly connected to the battery cell 3, and in other examples, the battery cell 3, the non-metallic buffer 2, and the stamping box body 1 are fixed by mutual limiting, and there is no connection between any two of them. The present embodiment does not limit this.

[0074] It is worth mentioning that "the non-metallic buffer 2 is at least arranged between the battery monomer 3 and the surrounding wall 12" can be understood as the non-metallic buffer 2 is arranged in each region between the circumferential side of the battery monomer 3 and the surrounding wall 12, at this time, the non-metallic buffer 2 can form a barrier to the external impact force from each side direction of the stamping box body 1, of course, it can also be understood that only part of the region between the circumferential side of the battery monomer 3 and the surrounding wall 12 is provided with the non-metallic buffer 2, at this time, the non-metallic buffer 2 can form a barrier to the external impact force from a specific side direction of the stamping box body 1, but cannot form a barrier to the external impact force from other side directions, but no matter which of the above cases, it should be determined that the non-metallic buffer 2 is arranged between the battery monomer 3 and the surrounding wall 12, which improves the problem that the aluminum profile box side wall of the existing battery device 100 is easily crushed by the battery monomer under external impact.

[0075] The technical scheme provided by the application increases the spacing between the battery monomer 3 and the surrounding wall 12, and gives the surrounding wall 12 sufficient deformation allowance. During the impact of the surrounding wall 12 of the battery device 100, the surrounding wall 12 can absorb more impact energy through its continuous deformation, and the non-metallic buffer 2 can collapse based on its own structural characteristics to absorb the remaining impact energy, so that the impact energy acting on the battery monomer 3 is effectively weakened, and the problem of deformation and damage of the battery monomer 3 in the installation cavity 1a due to bearing extrusion is improved, which plays a role in protecting the battery monomer 3. Furthermore, by designing the stamping box body 1 to load the battery monomer 3, the use of metal materials can be reduced, and the non-metallic buffer 2 can be matched to meet the lightweight design requirements of the battery device 100 on the basis of ensuring that the battery device 100 has sufficient side impact resistance; Furthermore, the stamping box body 1 is integrally formed, and the relatively closed internal environment of the installation cavity 1a can be used to protect the non-metallic buffer 2, thereby delaying its aging.

[0076] Please refer to Figure 7 and Figure 8 In some embodiments, the surrounding wall 12 includes two side impact walls 121 opposite along the first direction X and extending along the second direction Y, and the side impact walls 121 are arranged close to the side of the electric equipment; the non-metallic buffer 2 is arranged corresponding to at least one of the side impact walls 121.

[0077] It should be noted that the power consuming equipment equipped with the battery device 100 is generally capable of driving equipment such as a vehicle, and the side of the vehicle in the width direction is a part of the collision accident prone position; after the battery device 100 of the embodiment is correctly installed on the vehicle, the side impact protection wall 121 of the battery device 100 is generally close to the side of the vehicle in the width direction, and the "side impact protection wall 121" refers to the side wall capable of providing collision protection for the battery monomer 3 from the side of the vehicle in the width direction; the first direction X and the second direction Y are two directions intersecting in the plane where the bottom wall 11 is located; since the surrounding wall 12 in the embodiment is formed by stamping, it generally includes a plurality of partial side walls extending in the first direction X and a plurality of partial side walls extending in the second direction Y (for example Figure 3 and Figure 4 Among them, the surrounding wall 12 is arranged in a rectangular shape, including two partial side walls extending in the first direction X and two partial side walls extending in the second direction Y), so as to define the mounting cavity 1a by surrounding the plurality of partial side walls, and therefore it can be understood that the "side impact protection wall 121" is part of the overall structure of the surrounding wall 12; since the side impact protection wall 121 is provided with two, and "the non-metallic buffer 2 is arranged corresponding to at least one of the side impact protection walls 121" includes: one of the side impact protection walls 121 is provided with the non-metallic buffer 2, and the other side impact protection wall 121 is provided with the non-metallic buffer 2.

[0078] According to the above technical scheme, the non-metallic buffer 2 is arranged corresponding to at least one of the side impact protection walls 121, so that the impact resistance of the stamping box body 1 at the side impact protection wall 121 is improved. Since the side impact protection wall 121 is arranged on the side of the power consuming equipment which has relatively weak protection capability after the battery device 100 is installed on the power consuming equipment, the stamping box body 1 has the ability to protect the battery monomer 3 loaded therein when subjected to external force impact from the side of the power consuming equipment.

[0079] Please refer to Figure 7 and Figure 8 In some embodiments, the end face of the non-metallic buffer 2 away from the bottom wall 11 is formed with a wire passing groove 2a penetrating in the second direction Y.

[0080] It should be noted that in the battery device 100, a plurality of conductive wire harnesses are generally included, including temperature sensing wire harnesses, control wire harnesses and the like, and these conductive wire harnesses generally need to be uniformly bound to ensure that the wiring in the mounting cavity 1a is neat, and the "wire passing groove 2a" is used to accommodate the above-mentioned plurality of conductive wire harnesses, and the extension path thereof is generally a straight line, but is not limited thereto. When some inherent structures are avoided, the extension path of the wire passing groove 2a can also be partially arc-shaped.

[0081] According to the technical scheme, the through line groove 2a penetrating in the second direction Y is arranged on the non-metallic buffer 2, the non-metallic buffer 2 is fully utilized as a mounting base, and various conductive wire harnesses in the battery device 100 can be buried and arranged in the through line groove 2a, which can improve the neatness of the conductive wire harness arrangement and prevent the conductive wire harnesses and the battery monomer 3 from exchanging heat and causing adverse effects.

[0082] In some embodiments, the non-metallic buffer 2 is arranged between the two side impact protection walls 121 and the battery monomer 3.

[0083] It should be noted that the non-metallic buffer 2 is arranged between the two side impact protection walls 121 and the battery monomer 3.

[0084] According to the technical scheme, the non-metallic buffer 2 is arranged between the two side impact protection walls 121 and the battery monomer 3, which means that the battery device 100 provides buffering by the non-metallic buffer 2 on both sides close to the width direction of the vehicle after being correctly installed on the vehicle, and can provide more perfect protection (resistance to impact from both sides of the width direction of the vehicle) for the side impact condition of the vehicle.

[0085] Please refer to Figure 4 In some embodiments, the non-metallic buffer 2 includes a plurality of buffer segments 22 arranged in series along the circumference of the surrounding wall 12.

[0086] It should be noted that the “circumference of the surrounding wall 12” is the extension direction of the surrounding wall 12, and since the surrounding wall 12 is integrally arranged, the surrounding wall 12 can be regarded as a ring if the bottom wall 11 is not considered. The above embodiments have explained the possible arrangement of the non-metallic buffer 2 between the surrounding wall 12 and the battery monomer 3 (the non-metallic buffer 2 is arranged in each region between the circumferential side of the battery monomer 3 and the surrounding wall 12, or the non-metallic buffer 2 is arranged in part of the regions between the circumferential side of the battery monomer 3 and the surrounding wall 12), and in this embodiment, whether the non-metallic buffer 2 is arranged corresponding to the whole surrounding wall 12 or corresponding to the partial surrounding wall 12, it is composed of a plurality of buffer segments 22 arranged in series.

[0087] According to the technical scheme, the non-metallic buffer 2 is arranged by a plurality of buffer segments 22, which can reduce the difficulty of forming the non-metallic buffer 2 and reduce the requirements for production equipment, and can also form non-metallic buffers 2 of different lengths by combining and arranging the plurality of buffer segments 22, so as to adapt to different sizes of the stamping box body 1.

[0088] In the field of new energy batteries, the thermal management system is one of the key technologies for coping with the thermal related problems of the battery pack, ensuring the use performance, safety and life of the power battery pack. The main functions of the thermal management system include: effectively dissipating heat when the temperature of the battery pack rises to prevent thermal runaway accidents; preheating when the temperature of the battery pack is low to raise the battery temperature and ensure the charging and discharging performance and safety at low temperature; reducing the temperature difference of the battery monomers in the battery pack and inhibiting the formation of local hot spots to prevent rapid attenuation of the battery at high temperature positions and reduce the overall life of the battery monomers. The current thermal management method is to set a heat exchange plate corresponding to the battery monomer in the interior of the battery device, and the heat exchange plate is generally supported by a bearing member between the heat exchange plate and the box.

[0089] Please refer to Figure 5 、 Figure 6 and Figure 9 In some embodiments, the non-metallic buffer 2 is formed with a let-in slot 2b on the end face away from the surrounding wall 12, and the let-in slot 2b is arranged through the non-metallic buffer 2 towards the bottom wall 11; the battery device 100 further comprises a heat exchange plate 4 and a bearing member 5, the bearing member 5 is arranged on the bottom wall 11 and accommodated in the let-in slot 2b, and the heat exchange plate 4 is arranged on the bearing member 5 corresponding to the battery monomer 3.

[0090] It should be noted that the end face of the non-metallic buffer 2 away from the surrounding wall 12 is the end face of the non-metallic buffer 2 facing the battery monomer 3, and the let-in slot 2b is formed on the end face and arranged through the non-metallic buffer 2 towards the bottom wall 11 of the stamping box 1, which can be understood as that the let-in slot 2b penetrates both ends of the non-metallic buffer 2 along a direction perpendicular to the bottom wall 11 of the stamping box 1, and the opening of the let-in slot 2b faces the battery monomer 3; the battery device 100 further comprises a heat exchange plate 4 and a bearing member 5, the number of the heat exchange plate 4 and the bearing member 5 is generally determined according to the number of the battery monomer 3, and the specific structure of the heat exchange plate 4 is not limited in the present application, and the bearing member 5 provides support for the heat exchange plate 4 to stably install in the stamping box 1, and the specific structure of the heat exchange plate 4 is also not limited in the present application.

[0091] According to the technical scheme, the displacement slot 2b is arranged on the non-metallic buffer 2, and the bearing member 5 bearing the heat exchange plate 4 is arranged in the displacement slot 2b. Since the heat exchange plate 4 is usually arranged between two adjacent battery monomers 3 or between the battery monomer 3 and the surrounding wall 12, along the extension direction of the non-metallic buffer 2, the bearing member 5 supporting the heat exchange plate 4 is usually offset from the battery monomer 3. The arrangement of the displacement slot 2b on the non-metallic buffer 2 has little effect on the non-metallic buffer 2, and the non-metallic buffer 2 can still provide buffer protection for most of the side walls of the battery monomer 3. On the other hand, due to the arrangement of the displacement slot 2b, the non-metallic buffer 2 and the bearing member 5 can jointly utilize the installation cavity 1a space between the battery monomer 3 and the surrounding wall 12, so that the layout in the installation cavity 1a is more compact, which is beneficial to improve the energy density of the battery device 100.

[0092] In some embodiments, the bearing member 5 comprises conductive foam 51.

[0093] It should be noted that the conductive foam 51 is a kind of foam material with good elasticity and buffer. The material is made of ordinary foam by adding conductive particles or coating to make it conductive. This material is usually made of polyurethane, polyethylene or polypropylene, etc. These polymers are insulators by themselves, but can conduct current after special treatment.

[0094] According to the technical scheme, the bearing member 5 is arranged as conductive foam 51. On the one hand, the conductive foam 51 can provide protection for the heat exchange plate 4. On the other hand, since the battery device 100 as a whole belongs to a high-voltage system, the conductive foam 51 can realize the equipotential connection between the heat exchange plate 4 and the stamping box 1, so as to prevent accidents caused by excessive potential difference between the stamping box 1 and the heat exchange plate 4.

[0095] Further, please refer to Figure 4 In some embodiments, the non-metallic buffer 2 is arranged in two opposite directions X, and the battery monomer 3 is arranged between the two non-metallic buffers 2. The displacement slot 2b and the bearing member 5 are correspondingly grouped, and two groups are arranged corresponding to the two non-metallic buffers 2. The heat exchange plate 4 is arranged at the two ends of the bearing member 5 along the first direction X.

[0096] It should be noted that in the embodiment, the first direction X is a direction in the extension plane of the bottom wall 11 of the stamped box body 1, and according to the above embodiment, it can be known that the surrounding wall 12 is a closed loop structure, so in the first direction X, the surrounding wall 12 usually has a pair of oppositely arranged partial side walls, and the two non-metallic buffer members 2 are arranged opposite to each other in the first direction X, that is, they are arranged corresponding to the two partial side walls, but the specific position of the partial side wall is not limited in the embodiment; the two groups of “accommodation grooves 2b and bearing members 5” in the first direction X are aligned and coincided, and corresponding to this, the heat exchange plates 4 are arranged in the first direction X, and the two ends of the heat exchange plates 4 in the first direction X are arranged on the two bearing members 5 respectively.

[0097] According to the above technical scheme, by arranging the accommodation grooves 2b and the bearing members 5 on the two non-metallic buffer members 2 respectively, the two ends of the heat exchange plates 4 in the first direction X can be supported by the bearing members 5, so that the heat exchange plates 4, the battery monomers 3 and the stamped box body 1 can more easily reach a state of force balance.

[0098] In a specific embodiment, the surrounding wall 12 includes two side collision protection walls 121 opposite to each other in the first direction X and extending in the second direction Y, and the two non-metallic buffer members 2 formed with the accommodation grooves 2b are arranged corresponding to the two side collision protection walls 121 respectively.

[0099] In some embodiments, the battery monomers 3 are arranged in multiple rows in the second direction Y, and corresponding, the non-metallic buffer members 2 extend in the second direction Y; the heat exchange plates 4, the bearing members 5 and the accommodation grooves 2b are arranged in multiple groups corresponding to the multiple rows of battery monomers 3.

[0100] It should be noted that in the battery device 100, the number of battery monomers 3 is usually set to multiple, and through the series and parallel connection of multiple battery monomers 3, high voltage and capacity meeting the output requirement can be provided; in the embodiment, the second direction Y is a direction in the extension plane of the bottom wall 11 of the stamped box body 1; since the multiple battery monomers 3 are arranged in the second direction Y, and the heat exchange plates 4 need to be arranged corresponding to the battery monomers 3, the heat exchange plates 4, the bearing members 5 and the accommodation grooves 2b are arranged in multiple groups in the second direction Y, and it is worth mentioning that the non-metallic buffer members 2 in the embodiment extend in the second direction Y to provide a forming basis for the multiple accommodation grooves 2b arranged in the second direction Y, which should not be understood as the non-metallic buffer members 2 being in the second direction Y as a whole, and the non-metallic buffer members 2 can also be partially in other directions.

[0101] According to the technical scheme, by arranging the multiple heat exchange plates 4, the bearing member 5 and the displacement slot 2b, the arrangement basis of the non-metallic buffer 2 extending along the second direction Y is fully utilized, the multiple battery monomers 3 arranged along the second direction Y can be provided with heat exchange by the heat exchange plates 4, and effective heat management can be ensured for each battery monomer 3.

[0102] In the heat exchange system of the current battery device 100, the connection pipe 41 is usually used to connect the two adjacent heat exchange plates 4 in parallel, the connection pipe 41 is composed of the connection heads on the heat exchange plates 4, and the implementation manner of the parallel connection is not described herein, please refer to Figure 6 、 Figure 7 and Figure 8 In some embodiments, the end face of the non-metallic buffer 2 away from the bottom wall 11 is provided with a positioning slot 2c extending along the second direction Y; and the end portions of the multiple heat exchange plates 4 are connected and arranged through the connection pipe 41 extending along the second direction Y, and the connection pipe 41 is arranged in the positioning slot 2c.

[0103] It should be noted that, since the multiple heat exchange plates 4 are arranged along the second direction Y, the connection pipe 41 connecting the multiple heat exchange plates 4 also extends along the second direction Y; the positioning slot 2c extends along the second direction Y, and both ends thereof can penetrate through the non-metallic buffer 2, and of course, the positioning slot 2c can be arranged only at the position corresponding to the connection pipe 41.

[0104] According to the technical scheme, since the connection pipe 41 of the multiple heat exchange plates 4 extends along the second direction Y, the positioning slot 2c is also arranged on the non-metallic buffer 2 along the second direction Y, so that the positioning basis for the connection pipe 41 is provided, and the connection relationship is generated between the stamping box 1, the non-metallic buffer 2 and the heat exchange plates 4, thereby improving the installation stability of the components in the battery device 100.

[0105] Please refer to Figure 8 In some embodiments, the structural adhesive 6 is arranged between the non-metallic buffer 2 and the surrounding wall 12, and / or between the non-metallic buffer 2 and the bottom wall 11.

[0106] It should be noted that, the two parallel technical features "the structural adhesive 6 is arranged between the non-metallic buffer 2 and the surrounding wall 12" and "the structural adhesive 6 is arranged between the non-metallic buffer 2 and the bottom wall 11" can be arranged alternatively or simultaneously, and obviously, the effect of the simultaneous arrangement is better.

[0107] According to the technical scheme, the contact between the non-metallic buffer 2 and the surrounding wall 12 and the bottom wall 11 of the stamping box body 1 is fully utilized, the structural adhesive 6 is arranged therebetween, and the non-metallic buffer 2 is fixed in the stamping box body 1 in a manner of adhesion, without the need to make structural improvements to the stamping box body 1 for the non-metallic buffer 2, and the necessary cost of arranging the non-metallic buffer 2 in the battery device 100 is controlled.

[0108] In some embodiments, the non-metallic buffer 2 includes a buffer foam 21.

[0109] It should be noted that the buffer foam 21 is a material foamed by plastic particles, which is simply referred to as foam. It has various classifications, including PU foam, anti-static foam, etc. The buffer foam 21 usually has advantages such as elasticity, light weight, reliable performance, etc.

[0110] According to the technical scheme, the non-metallic buffer 2 is arranged as the buffer foam 21, which can play a role of energy absorption and buffering on the one hand due to its excellent elastic properties, and on the other hand, due to its low material density, it can better adapt to the lightweight design requirements of the stamping box body 1.

[0111] In some embodiments, the material of the buffer foam 21 includes modified polyphenyl ether foam or rigid foamed polyurethane foam.

[0112] It should be noted that the modified polyphenyl ether (MPPO / MPPE, which is a modified product of polyphenyl ether, and has excellent electrical properties, dielectric properties, water resistance, heat resistance, impact resistance, dimensional stability, flame resistance, mechanical properties, and creep resistance due to the absence of strong polar groups in the molecular structure) foam and rigid foamed polyurethane foam mentioned in the present embodiment both belong to high-strength foamed buffer foam 21, and the foaming ratio is between 2 and 10 times, and the density after foaming is large, which can be used as a reinforcing material for the stamping box body 1.

[0113] The present application also proposes an electric equipment, which includes the battery device 100 for providing electric energy. The specific structure of the battery device 100 is referred to the above-mentioned embodiments. Since the electric equipment adopts all the technical schemes of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical schemes of the above-mentioned embodiments, which will not be repeated here. The battery device 100 is used to provide electric energy for the electric equipment, which includes but is not limited to new energy vehicles such as pure electric vehicles, hybrid electric vehicles, and extended range electric vehicles, as well as engineering vehicles such as electric excavators and electric bulldozers, and can also include aircraft such as electric unmanned aerial vehicles and electric passenger aircraft.

[0114] The application provides a battery device 100, which comprises a punched box body 1, buffer foam 21, conductive foam 51 and heat exchange plates 4. The punched box body 1 has a bottom wall 11 and a surrounding wall 12 formed on one side of the bottom wall 11. The surrounding wall 12 and the bottom wall 11 jointly define a mounting cavity 1a, in which a battery monomer 3 is arranged. The surrounding wall 12 has two side impact protection walls 121 which are opposite along a first direction X and extend along a second direction Y. The buffer foam 21 is arranged corresponding to the two side impact protection walls 121. An end surface of the buffer foam 21 away from the bottom wall 11 is formed with a wire passing groove 2a and a positioning groove 2c which penetrate along the second direction Y. An end surface of the buffer foam 21 away from the side impact protection wall 121 is formed with a yielding slot 2b which penetrates towards the bottom wall 11. The conductive foam 51 is arranged on the bottom wall 11 and accommodated in the yielding slot 2b. The heat exchange plates 4 are arranged corresponding to the battery monomer 3 and the end part along the first direction X is arranged in the corresponding conductive foam 51. The battery monomer 3 is arranged in multiple and arranged along the second direction Y. The heat exchange plates 4, the conductive foam 51 and the yielding slot 2b are correspondingly grouped and arranged in multiple groups corresponding to the multiple rows of battery monomers 3.

[0115] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application, and they should be covered in the scope of the claims and the description of the application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized by, The battery device comprises: a stamping box body having a bottom wall and a surrounding wall formed on one side of the bottom wall, the surrounding wall and the bottom wall together defining a mounting cavity in which a battery monomer is arranged; and a non-metallic buffer arranged at least between the battery monomer and the surrounding wall to collapse and absorb energy when the surrounding wall is impacted.

2. The battery device of claim 1, wherein The surrounding wall comprises two side impact walls opposite in a first direction and extending in a second direction, and arranged close to the side of an electric device; The non-metallic buffer is arranged at least corresponding to one of the side impact walls.

3. The battery device of claim 2, wherein An end surface of the non-metallic buffer away from the bottom wall is formed with a wire slot penetrating in the second direction.

4. The battery device of claim 2, wherein The non-metallic buffer is arranged between the two side impact walls and the battery monomer.

5. The battery device of claim 1, wherein The non-metallic buffer comprises a plurality of buffer segments arranged in a head-to-tail manner along the circumference of the surrounding wall.

6. The battery device according to any one of claims 1 to 5, wherein An end surface of the non-metallic buffer away from the surrounding wall is formed with a clearance slot penetrating the non-metallic buffer towards the bottom wall; The battery device further comprises a heat exchange plate and a carrier, the carrier is arranged on the bottom wall and accommodated in the clearance slot, and the heat exchange plate is arranged on the carrier corresponding to the battery monomer.

7. The battery device of claim 6, wherein The carrier comprises conductive foam.

8. The battery device of claim 6, wherein The non-metallic buffer is arranged in two opposite directions in the first direction, and the battery monomer is arranged between the two non-metallic buffers; The clearance slots and the carriers are correspondingly grouped, and two groups are arranged corresponding to the two non-metallic buffers; The heat exchange plates are arranged at both ends in the first direction respectively on the two carriers.

9. The battery device of claim 6, wherein The battery monomers are arranged in multiple rows in the second direction, and correspondingly, the non-metallic buffers extend in the second direction; The heat exchange plates, the carriers and the clearance slots are correspondingly grouped, and multiple groups are arranged corresponding to the multiple rows of battery monomers.

10. The battery device of claim 9, wherein, An end surface of the non-metallic buffer away from the bottom wall is formed with a positioning slot extending in the second direction; Corresponding to the non-metallic buffer, the end portions of the plurality of heat exchange plates are communicatively arranged through a connecting pipe extending in the second direction, and the connecting pipe is arranged in the positioning slot.

11. The battery device according to any one of claims 1 to 5, wherein Structural glue is arranged between the non-metallic buffer and the surrounding wall, and / or between the non-metallic buffer and the bottom wall.

12. The battery device according to any one of claims 1 to 5, wherein The non-metallic buffer comprises buffer foam.

13. The battery device of claim 12, wherein, The material of the buffer foam comprises modified polyphenyl ether foam or rigid foamed polyurethane foam.

14. An electrical device, characterized by The battery device as claimed in any one of claims 1 to 13 is used to provide electric energy.

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