Battery device and electric equipment

Abstract

The utility model relates to the technical field of battery production, in particular to a battery device and electric equipment. The battery device comprises a battery monomer assembly, a box body and a heat exchange assembly, the battery monomer assembly comprises a battery monomer unit, the battery monomer unit comprises a plurality of battery monomers, each battery monomer comprises a pole assembly, a first surface and a second surface, the first surface and the second surface intersect, and the pole assembly is arranged on the first surface; the box body comprises a first part, the battery monomers are arranged on a bearing surface of the first part, and the first surface and the bearing surface are intersected; the heat exchange assembly comprises a plurality of heat exchange units, each heat exchange unit comprises a first heat exchange plate and a second heat exchange plate, the first heat exchange plate is in heat conduction connection with the first surface, the second heat exchange plate is in heat conduction connection with at least part of the second surface, and the first heat exchange plate is provided with a first notch for avoiding the pole assembly. Heat exchange can be conducted through the first heat exchange plate and the first surface, the second heat exchange plate is in heat conduction connection with at least part of the second surface, and the heat exchange efficiency is improved.

Description

TECHNICAL FIELD

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

[0002] This part provides only background information related to the present disclosure, which is not necessarily prior art.

[0003] With the increasing maturity of new energy technology, new energy vehicles and other power consumption equipment have gradually entered the public eye. The main core technology of new energy vehicles lies in the battery device, and the safety and stability of the battery device directly determine the performance of the whole vehicle.

[0004] In the battery device, a box body and a battery monomer assembly arranged in the box body are usually included, wherein the battery monomers in the battery monomer assembly are arranged towards the upper cover of the box body, the battery monomers include multiple surfaces, and the surface with the largest area among the multiple surfaces is arranged in heat exchange with a heat exchange plate. However, the heat exchange effect of the battery device with such a structure is poor. Utility model content

[0005] In view of the above problems, the present application provides a battery device and a power consumption equipment, which solves the problem of low heat exchange efficiency of the battery device in the prior art.

[0006] A first aspect of an embodiment of the present application provides a battery device, comprising:

[0007] a battery monomer assembly, the battery monomer assembly including a battery monomer unit, the battery monomer unit including a plurality of battery monomers, the battery monomers including a pole assembly and first and second surfaces arranged in intersection, the pole assembly being arranged on the first surface;

[0008] a box body, the box body including a first part, the battery monomers being arranged on a bearing surface of the first part, and the first surface being arranged in intersection with the bearing surface; and

[0009] a heat exchange assembly, the heat exchange assembly including a plurality of heat exchange units, each heat exchange unit including a first heat exchange plate and a second heat exchange plate, the first heat exchange plate being in heat conduction connection with the first surface, the second heat exchange plate being in heat conduction connection with at least part of the second surface, and the first heat exchange plate being provided with a first gap avoiding the pole assembly.

[0010] The first heat exchange plate of the heat exchange unit is in heat conduction connection with the first surface, the second heat exchange plate is in heat conduction connection with at least part of the second surface, and the first heat exchange plate is provided with a first gap avoiding the pole assembly in the embodiment of the present application, so that heat exchange can be performed through the first heat exchange plate and the first surface, and at the same time, heat conduction connection is performed between the second heat exchange plate and at least part of the second surface, thereby improving the heat exchange efficiency between the heat exchange assembly and the battery monomer assembly.

[0011] In some embodiments of the present application, the battery monomer unit comprises a first battery monomer group and a second battery monomer group arranged at intervals, the orientations of all battery monomers of the first battery monomer group are the same, the orientations of all battery monomers of the second battery monomer group are the same, and the pole column assemblies of the first battery monomer group and the second battery monomer group are oppositely arranged; the first heat exchange plate is arranged between the first battery monomer group and the second battery monomer group.

[0012] The embodiments of the present application can simultaneously exchange heat with the first battery monomer group and the second battery monomer group through one first heat exchange plate, so that the battery device is more compact, and the volume energy density of the battery device is improved.

[0013] In some embodiments of the present application, the number of battery monomer units is at least two, and adjacent two battery monomer units are arranged at intervals.

[0014] The embodiments of the present application can determine the power of the battery device according to the number of battery monomer units, and expand the application range of the battery device.

[0015] In some embodiments of the present application, the second surface comprises a first sub-surface, a second sub-surface, a third sub-surface and a fourth sub-surface connected in sequence, the first sub-surface, the second sub-surface, the third sub-surface and the fourth sub-surface form a rectangular cylindrical structure, wherein the area of the first sub-surface is greater than the area of the second sub-surface, and at least one of the first sub-surface, the second sub-surface, the third sub-surface and the fourth sub-surface is in heat conduction connection with the second heat exchange plate.

[0016] The embodiments of the present application can realize heat exchange between the second heat exchange plate and at least one of the first sub-surface, the second sub-surface, the third sub-surface and the fourth sub-surface through the second heat exchange plate, so as to realize heat exchange between the second heat exchange plate and the battery monomer.

[0017] In some embodiments of the present application, the second sub-surface and the fourth sub-surface are connected with the second heat exchange plate.

[0018] The embodiment of the present application can make the first heat exchange plate and the second heat exchange plate form a U-shaped heat exchange structure by connecting the second sub-surface and the fourth sub-surface to the second heat exchange plate, increase the heat exchange area between the heat exchange assembly and the battery monomer, and improve the heat exchange efficiency.

[0019] In some embodiments of the present application, in each heat exchange unit, the first heat exchange plate includes a first flow channel, and the second heat exchange plate includes a second flow channel, and the first flow channel and the second flow channel are in communication.

[0020] The embodiment of the present application can make the first flow channel and the second flow channel communicate with each other, and realize the flow of the liquid in the first flow channel and the second flow channel by connecting the first flow channel and the second flow channel in each heat exchange unit.

[0021] In some embodiments of the present application, the battery device further includes a second part connected to the first part in a cover manner, and the first part and the second part enclose a containing space for accommodating the battery monomer assembly; the heat exchange unit further includes a liquid inlet pipe, the liquid inlet pipe is in communication with one of the first flow channel and the second flow channel, and the liquid inlet pipe penetrates one of the second part and the first part.

[0022] The embodiment of the present application can introduce the liquid into the first heat exchange plate and the second heat exchange plate through the liquid inlet pipe, and realize the flow of the liquid by setting the second part connected to the first part in a cover manner, and the first part and the second part enclosing a containing space for accommodating the battery monomer assembly; wherein the heat exchange unit further includes a liquid inlet pipe, the liquid inlet pipe is in communication with one of the first flow channel and the second flow channel, and the liquid inlet pipe penetrates one of the second part and the first part.

[0023] In some embodiments of the present application, the heat exchange unit further includes a liquid outlet pipe, the liquid outlet pipe is in communication with the other one of the first flow channel and the second flow channel, and the liquid outlet pipe penetrates the other one of the second part and the first part.

[0024] The embodiment of the present application can realize the flow of the liquid by flowing out through the liquid outlet pipe by setting the liquid outlet pipe, the liquid outlet pipe is in communication with the other one of the first flow channel and the second flow channel, and the liquid outlet pipe penetrates the other one of the second part and the first part.

[0025] In some embodiments of the present application, the heat exchange unit includes one of an extruded part and a cast part, and / or the heat exchange unit is one of an aluminum alloy part and a copper alloy part.

[0026] The embodiment of the present application can process the heat exchange unit by extrusion process or casting process, and the heat exchange unit has high heat transfer capacity and high heat exchange efficiency.

[0027] In some embodiments of the present application, the first heat exchange plate comprises at least two continuous bending sections, and the at least two continuous bending sections enclose the first gap.

[0028] The embodiment of the present application can form the at least two continuous bending sections of the first heat exchange plate by bending process, so that the at least two continuous bending sections enclose the first gap for avoiding the pole assembly, and has high production efficiency and low cost.

[0029] In some embodiments of the present application, the first heat exchange plate is provided with a hollowed-out area, and the hollowed-out area forms the first gap.

[0030] The embodiment of the present application can process the first gap on the first heat exchange plate by hole digging process, so that the first gap can better accommodate the pole assembly.

[0031] The second aspect of the embodiment of the present application provides a power utilization device comprising the battery device as mentioned in the above embodiments, and the battery device is used to supply power for the power utilization device.

[0032] The power utilization device of the embodiment of the present application uses the battery device as mentioned in the above embodiments, and the performance of the battery device is improved, so that the working power performance of the power utilization device is improved.

[0033] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, and the specific embodiments of the present application can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0034] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Moreover, the same reference numerals in the attached drawings refer to the same or like components throughout the several drawings. In the drawings:

[0035] Figure 1A structural schematic diagram of a battery device provided for some embodiments of the present application;

[0036] Figure 2 A structural schematic diagram of a power consuming device provided for some embodiments of the present application;

[0037] Figure 3 A structural schematic diagram of a battery device provided for some embodiments of the present application; Figure 1 A structural schematic diagram of the inside of a battery device shown in FIG. 1;

[0038] Figure 4 A structural schematic diagram of the inside of a battery device shown in FIG. 1; Figure 3 A structural schematic diagram of the inside of a battery device shown in FIG. 1;

[0039] Figure 5 A structural schematic diagram of the inside of a battery device shown in FIG. 1; Figure 3 A structural schematic diagram of the inside of a battery device shown in FIG. 1;

[0040] Figure 6 A structural schematic diagram of the inside of a battery device shown in FIG. 1; Figure 5 A structural schematic diagram of the inside of a battery device shown in FIG. 1;

[0041] Figure 7 A structural schematic diagram of the inside of a battery device shown in FIG. 1; Figure 3 A structural schematic diagram of the inside of a battery device shown in FIG. 1;

[0042] Reference signs are as follows:

[0043] 100, battery device; 200, power consuming device; 300, controller; 400, motor;

[0044] 10, battery cell assembly; 11, battery cell unit; 111, first battery cell group; 112, second battery cell group; 113, battery cell; 1131, first surface; 1132, second surface; 11321, first sub-surface; 11322, second sub-surface; 11323, third sub-surface; 1133, third surface; 1134, pole assembly; 1135, bare cell;

[0045] 20, box body; 21, first part; 211, bearing surface; 22, second part; 23, containing space;

[0046] 30, heat exchange assembly; 31, heat exchange unit; 311, first heat exchange plate; 3111, first flow channel; 3112, first notch; 312, second heat exchange plate; 3121, second flow channel; 313, liquid inlet pipe; 314, liquid outlet pipe;

[0047] X-X, length direction; Y-Y, width direction. DETAILED DESCRIPTION

[0048] The embodiments of the present application will be described in detail below with reference to the drawings. The following examples are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, but cannot be used to limit the protection scope of the present application.

[0049] 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 this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the terms "comprising," "comprises" and "including" as used herein are synonymous with and meant to have the same meaning as the term "including"; the term "coupled" as used herein means the joining of two members together with one or more intervening members.

[0050] 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 "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0051] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. The skilled person explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.

[0052] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0053] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0054] 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", and "circumferential" 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 therefore cannot be understood as indicating or implying 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 limiting the embodiments of the present application.

[0055] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", and "fixing" and other terms should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the 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.

[0056] At present, from the development of market situation, the application of battery device is more and more extensive. The battery device is not only applied to the energy storage power supply system of hydropower, thermal power, wind power and solar power station, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields. With the continuous expansion of the application field of battery device, the market demand is also increasing.

[0057] The battery device related to the embodiments of the present application can be but not limited to used in electric equipment such as vehicles, ships or aircraft. The battery device can be used to form the electric equipment with the battery monomer, battery device and the like related to the present application.

[0058] The electric equipment using the battery device as power supply in the embodiments of the present application can be but not limited to mobile phones, tablets, notebook computers, electric toys, electric tools, electric cars, electric vehicles, ships, spacecraft and the like. Among them, the electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric plane toys, and the like, and the spacecraft can include airplanes, rockets, space shuttles and spacecraft, and the like.

[0059] It should be understood that the technical solutions described in the embodiments of the present application are not only limited to the above described battery device and electric equipment, but also can be applied to all batteries including the box body and electric equipment using the battery.

[0060] The battery apparatus mentioned in the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells connected in series, in parallel, or in a mixed connection through a busbar component.

[0061] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells.

[0062] As an example, the battery cell assembly can be a battery module formed by arranging and fixing a plurality of battery cells into a separate module. As an example, the battery module can be formed by bundling a plurality of battery cells with a cable tie.

[0063] In some embodiments, the battery apparatus can be a battery pack including a case and one or more battery cell assemblies accommodated in the case.

[0064] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be accommodated in the case by fixing the battery module in the case.

[0065] As an example, the battery cell assembly can also be accommodated in the case by directly fixing a plurality of battery cells in the case.

[0066] As an example, the case can include a first case and a second case. The first case and the second case are coupled so that an enclosed space is formed inside the case to accommodate the battery cell assembly. Here, the enclosed means covered or closed, and can be sealed or unsealed. The first case can be a top cover or a first portion.

[0067] As an example, the case can include a top cover, a frame, and a first portion. The top cover and the first portion are respectively connected to the frame so that an enclosed space is formed inside the case to accommodate the battery cell assembly.

[0068] In some embodiments, the case can be a part of a chassis structure of a vehicle. For example, a part of the case can be at least a part of a floor of the vehicle, or a part of the case can be at least a part of a cross beam and a longitudinal beam of the vehicle.

[0069] The battery cell includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer, and the positive electrode active material layer is coated on the surface of the positive electrode collector. The collector without the positive electrode active material layer protrudes from the collector with the positive electrode active material layer, and the collector without the positive electrode active material layer is laminated as a positive electrode tab. Taking a lithium ion battery as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium or lithium manganate. The negative electrode sheet includes a negative electrode collector and a negative electrode active material layer, and the negative electrode active material layer is coated on the surface of the negative electrode collector. The collector without the negative electrode active material layer protrudes from the collector with the negative electrode active material layer, and the collector without the negative electrode active material layer is laminated as a negative electrode tab. The material of the negative electrode collector can be copper, and the negative electrode active material can be carbon or silicon. The material of the separator can be PP (polypropylene) or PE (polyethylene). In addition, the electrode assembly can be a winding type structure or a laminated type structure, and the embodiments of the present application are not limited thereto.

[0070] The technical solutions described in the embodiments of the present application are suitable for various battery cell using electric devices, such as mobile phones, portable devices, notebook computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, etc. For example, the spacecraft includes an airplane, a rocket, a space shuttle and a spaceship, etc.

[0071] In the battery device, a box body and a battery cell assembly arranged in the box body are usually included, wherein the battery cell in the battery cell assembly is arranged towards the upper cover of the box body, and the battery cell includes a plurality of surfaces, and the surface with the largest area is arranged in heat exchange with the heat exchange plate. However, the heat exchange effect of the battery device with such structure is poor, and the heat exchange efficiency is low.

[0072] In order to solve this problem, the embodiment of the present application provides a battery device, which comprises a battery monomer assembly, a box body and a heat exchange assembly, the battery monomer assembly comprises a battery monomer unit, the battery monomer unit comprises a plurality of battery monomers, the battery monomer comprises a pole assembly and a first surface and a second surface intersectingly arranged, and the pole assembly is arranged on the first surface; the box body comprises a first part, the battery monomers are arranged on a bearing surface of the first part, and the first surface is arranged intersectingly with the bearing surface; the heat exchange assembly comprises a plurality of heat exchange units, each heat exchange unit comprises a first heat exchange plate and a second heat exchange plate, the first heat exchange plate is in thermal conductive connection with the first surface, the second heat exchange plate is in thermal conductive connection with at least part of the second surface, and the first heat exchange plate is provided with a first gap avoiding the pole assembly, so that heat exchange can be carried out through the first heat exchange plate and the first surface, and at the same time, the second heat exchange plate is in thermal conductive connection with at least part of the second surface, and the heat exchange efficiency between the heat exchange assembly and the battery monomer assembly is improved.

[0073] The battery device in the embodiment of the present application can be used on an electric device such as a vehicle, and can also be installed on an electric device that needs to be installed in advance, such as an energy storage device.

[0074] The structure in the embodiment of the present application will be described in detail below with reference to the drawings.

[0075] The first aspect of the embodiment of the present application provides a battery device 100, as shown in Figure 1 、 Figure 3 、 Figure 4 and Figure 7 , the battery device 100 comprises a battery monomer assembly 10, a box body 20 and a heat exchange assembly 30, the battery monomer assembly 10 comprises a battery monomer unit 11, the battery monomer unit 11 comprises a plurality of battery monomers 113, the battery monomer 113 comprises a pole assembly 1134 and a first surface 1131 and a second surface 1132 intersectingly arranged, and the pole assembly 1134 is arranged on the first surface 1131; the box body 20 comprises a first part 21, the battery monomers 113 are arranged on a bearing surface 211 of the first part 21, and the first surface 1131 is arranged intersectingly with the bearing surface 211 of the first part 21; the heat exchange assembly 30 comprises a plurality of heat exchange units 31, each heat exchange unit 31 comprises a first heat exchange plate 311 and a second heat exchange plate 312, the first heat exchange plate 311 is in thermal conductive connection with the first surface 1131, the second heat exchange plate 312 is in thermal conductive connection with at least part of the second surface 1132, and the first heat exchange plate 311 is provided with a first gap 3112 avoiding the pole assembly 1134.

[0076] Among them, the first part 21 here is usually a lower box or a bottom plate, and the bearing surface 211 here refers to the bottom surface of the lower box or the inner surface of the bottom plate, which can be used to place the battery monomers 113.

[0077] The battery cell 113 is generally a square battery structure, the first surface 1131 is one end surface of the square battery structure, and the second surface 1132 is a side surface of the battery cell 113, wherein the second surface 1132 and the first surface 1131 are arranged to intersect, and can be perpendicular to each other.

[0078] Each battery cell 113 is provided with two pole post assemblies 1134, and the first heat exchange plate 311 is provided with a first notch 3112 corresponding to each pole post assembly 1134, so that the first notch 3112 can form a housing for the pole post assembly 1134.

[0079] Optionally, as shown in Figure 7 The battery cell 113 further includes a third surface 1133, which is parallel to the first surface 1131, and the third surface 1133 and the first surface 1131 are respectively arranged on two sides of the second surface 1132. Continuing to refer to Figure 3 The third surface 1133 and the first surface 1131 are respectively arranged on two sides of the second surface 1132 along the X-X direction, wherein the X-X direction is the length direction of the battery device 100, and the Y-Y direction is the width direction of the battery device 100.

[0080] In the embodiments of the present application, the first heat exchange plate 311 of the heat exchange unit 31 is in thermal connection with the first surface 1131, the second heat exchange plate 312 is in thermal connection with at least part of the second surface 1132, and the first heat exchange plate 311 is provided with the first notch 3112 for avoiding the pole post assembly 1134, so that heat exchange can be performed between the first heat exchange plate 311 and the first surface 1131, and at the same time, the second heat exchange plate 312 is in thermal connection with at least part of the second surface 1132, thereby improving the heat exchange efficiency between the heat exchange assembly 30 and the battery cell assembly 10.

[0081] In some embodiments of the present application, as shown in Figure 3 The battery cell unit 11 includes a first battery cell group 111 and a second battery cell group 112 arranged at intervals, all the battery cells 113 of the first battery cell group 111 have the same orientation, all the battery cells 113 of the second battery cell group 112 have the same orientation, and the pole post assemblies 1134 of the first battery cell group 111 and the pole post assemblies 1134 of the second battery cell group 112 are arranged to face each other, and the first heat exchange plate 311 is arranged between the first battery cell group 111 and the second battery cell group 112.

[0082] Specifically, the pole assembly 1134 of the first battery monomer group 111 is located at the end of the right side of the first battery monomer group 111, the pole assembly 1134 of the second battery monomer group 112 is located at the end of the left side of the first battery monomer group 111, and two heat exchange units 31 are arranged between the first battery monomer group 111 and the second battery monomer group 112, that is, two first heat exchange plates 311 are arranged between the first battery monomer group 111 and the second battery monomer group 112, and each first heat exchange plate 311 is provided with a first notch 3112 to form an avoidance for the corresponding pole assembly 1134.

[0083] Continuing to refer to Figure 2 As shown in the figure, each heat exchange unit 31 is a liquid circulation system independent of each other, facilitating the circulation of the liquid, and the movement of the liquid will not be affected by other liquid circulation systems.

[0084] The embodiments of the present application arrange the first battery monomer group 111 and the second battery monomer group 112 at intervals, the orientations of all the battery monomers 113 of the first battery monomer group 111 are the same, the orientations of all the battery monomers 113 of the second battery monomer group 112 are the same, and the orientations of the pole assemblies 1134 of the first battery monomer group 111 and the second battery monomer group 112 are opposite; the first heat exchange plate 311 is arranged between the first battery monomer group 111 and the second battery monomer group 112, so that the first heat exchange plate 311 can simultaneously exchange heat with the first battery monomer group 111 and the second battery monomer group 112, making the battery device 100 more compact and improving the volume energy density of the battery device 100.

[0085] In some embodiments of the present application, as Figure 3 shown, the number of battery monomer units 11 is at least two, and adjacent two battery monomer units 11 are arranged at intervals.

[0086] In Figure 3 , the number of battery monomer units 11 is two, and the two battery monomer units 11 are arranged at intervals along the X-X direction. Of course, the number of battery monomer units 11 here can be three or four, and these battery monomer units 11 are all arranged at intervals along the X-X direction.

[0087] The embodiments of the present application arrange the number of battery monomer units 11 to be at least two, and arrange adjacent two battery monomer units 11 at intervals, so that the power of the battery device 100 can be determined according to the number of battery monomer units 11, and the application range of the battery device 100 is expanded.

[0088] In some embodiments of the present application, as Figure 2 and Figure 7As shown, the second surface 1132 includes a first sub-surface 11321, a second sub-surface 11322, a third sub-surface 11323 and a fourth sub-surface connected in sequence, and the first sub-surface 11321, the second sub-surface 11322, the third sub-surface 11323 and the fourth sub-surface form a rectangular cylindrical structure, wherein the area of the first sub-surface 11321 is greater than the area of the second sub-surface 11322, and at least one of the first sub-surface 11321, the second sub-surface 11322, the third sub-surface 11323 and the fourth sub-surface is in heat-conducting connection with the second heat exchange plate 312.

[0089] The second heat exchange plate 312 of each heat exchange unit 31 herein can be provided as one, two, three or four, wherein each second heat exchange plate 312 is in contact with one of the first sub-surface 11321, the second sub-surface 11322, the third sub-surface 11323 and the fourth sub-surface, and Figure 2 In the embodiment, the number of the second heat exchange plate 312 of each heat exchange unit 31 is one, and at this time, the second heat exchange plate 312 and the first heat exchange plate 311 form an L-shaped structure, and heat exchange between the battery monomer 113 and the first heat exchange plate 311 and the second heat exchange plate 312 of the heat exchange unit 31 can be realized.

[0090] The embodiment of the present application sets the second surface 1132 as the first sub-surface 11321, the second sub-surface 11322, the third sub-surface 11323 and the fourth sub-surface connected in sequence, and the first sub-surface 11321, the second sub-surface 11322, the third sub-surface 11323 and the fourth sub-surface form a rectangular cylindrical structure, wherein the area of the first sub-surface 11321 is greater than the area of the second sub-surface 11322, and at least one of the first sub-surface 11321, the second sub-surface 11322, the third sub-surface 11323 and the fourth sub-surface is in heat-conducting connection with the second heat exchange plate 312, so that heat exchange between at least one of the first sub-surface 11321, the second sub-surface 11322, the third sub-surface 11323 and the fourth sub-surface and the second heat exchange plate 312 can be realized through the second heat exchange plate 312, thereby realizing heat exchange between the second heat exchange plate 312 and the battery monomer 113.

[0091] In some embodiments of the present application, as Figure 4 shown, the second sub-surface 11322 and the fourth sub-surface are both in heat-conducting connection with the second heat exchange plate 312.

[0092] The number of the second heat exchange plate 312 of each heat exchange unit 31 is two, wherein the two second heat exchange plates 312 are respectively in heat-conducting connection with the second sub-surface 11322 and the fourth sub-surface, and at this time, the second heat exchange plate 312 and the first heat exchange plate 311 of the heat exchange assembly 30 form a U-shaped plate structure, which can simultaneously perform heat exchange on three surfaces of the battery monomer 113, thereby improving the heat exchange efficiency between the battery monomer 113.

[0093] The embodiments of the present application can make the first heat exchange plate 311 and the second heat exchange plate 312 form a U-shaped heat exchange structure by heat-conducting connecting the second sub-surface 11322 and the fourth sub-surface with the second heat exchange plate 312, thereby increasing the heat exchange area between the heat exchange assembly 30 and the battery monomer 113 and improving the heat exchange efficiency.

[0094] Alternatively, the second heat exchange plate 312 herein can also be heat-conducting connected with the first sub-surface 11321 and the third sub-surface 11323. Since the first sub-surface 11321 and the third sub-surface 11323 are large surfaces of the bare battery cell 1135, connecting the second heat exchange plate 312 with the first sub-surface 11321 and the third sub-surface 11323 can further increase the heat exchange area between the second heat exchange plate 312 and the battery monomer 113 and improve the heat exchange efficiency between the heat exchange assembly 30 and the battery monomer 113.

[0095] Alternatively, the second heat exchange plate 312 herein can also be arranged on the first sub-surface 11321, the second sub-surface 11322, the third sub-surface 11323 and the fourth sub-surface. However, considering that this arrangement mode is likely to increase the space occupied by the second heat exchange plate 312 in the battery device 100, the second heat exchange plate 312 can be arranged on part of the second surface 1132 in general cases.

[0096] In some embodiments of the present application, in each heat exchange unit 31, the first heat exchange plate 311 includes a first flow channel 3111, and the second heat exchange plate 312 includes a second flow channel 3121, and the first flow channel 3111 is in communication with the second flow channel 3121.

[0097] The first flow channel 3111 is arranged inside the first heat exchange plate 311 and can be realized by adopting a hollow structure for the first heat exchange plate 311, the second flow channel 3121 is arranged inside the second heat exchange plate 312 and can be realized by adopting a hollow structure for the second heat exchange plate 312, and the first flow channel 3111 and the second flow channel 3121 are in communication, thereby realizing the sequential flow of the liquid in each heat exchange unit 31.

[0098] The liquid flows along the direction indicated by the arrow in Figure 3 The liquid flows along the direction indicated by the arrow in Figure 4 The liquid flows along the direction indicated by the arrow in

[0099] The embodiment of the present application can make the first flow channel 3111 and the second flow channel 3121 communicate with each other, and realize the flow of the liquid in the first flow channel 3111 and the second flow channel 3121 by communicating the first flow channel 3111 and the second flow channel 3121 in each heat exchange unit 31, wherein the first heat exchange plate 311 comprises the first flow channel 3111, the second heat exchange plate 312 comprises the second flow channel 3121, and the first flow channel 3111 communicates with the second flow channel 3121.

[0100] In some embodiments of the present application, as shown in Figure 1 and Figure 3 The battery device 100 further comprises a second part 22 in cover connection with the first part 21, and the first part 21 and the second part 22 enclose a containing space 23 for containing the battery monomer assembly 10; the heat exchange unit 31 further comprises a liquid inlet pipe 313, the liquid inlet pipe 313 communicates with one of the first flow channel 3111 and the second flow channel 3121, and the liquid inlet pipe 313 penetrates one of the second part 22 and the first part 21.

[0101] In Figure 3 , the first part 21 is a tray structure, the second part 22 is an upper cover, and the first part 21 and the second part 22 both have part of the containing space 23, and the liquid inlet pipe 313 penetrates the second part 22 to realize the structure that the liquid enters from the upper side and flows out from the lower side, facilitating the natural flow of the liquid.

[0102] The embodiment of the present application can make the first flow channel 3111 and the second flow channel 3121 communicate with each other, and realize the flow of the liquid in the first flow channel 3111 and the second flow channel 3121 by communicating the first flow channel 3111 and the second flow channel 3121 in each heat exchange unit 31, wherein the first heat exchange plate 311 comprises the first flow channel 3111, the second heat exchange plate 312 comprises the second flow channel 3121, and the first flow channel 3111 communicates with the second flow channel 3121.

[0103] In some embodiments of the present application, as shown in Figure 3 and Figure 4 The heat exchange unit 31 further comprises a liquid outlet pipe 314, the liquid outlet pipe 314 communicates with the other one of the first flow channel 3111 and the second flow channel 3121, and the liquid outlet pipe 314 penetrates the other one of the second part 22 and the first part 21.

[0104] It should be noted that, in Figure 3In the embodiment shown in FIG. 6, for the left heat exchange unit 31, the liquid outlet pipe 314 is in communication with the first flow channel 3111, and the liquid flows into the liquid inlet pipe 313, first flows through the second flow channel 3121, then flows through the first flow channel 3111, and finally flows out from the liquid outlet pipe 314, thereby realizing the flow of the liquid. For the middle heat exchange unit 31, the liquid flows into the liquid inlet pipe 313, flows through the first flow channel 3111 and the second flow channel 3121, and finally flows out from the liquid outlet pipe 314, and the two middle heat exchange units 31 can be realized by using the same liquid inlet pipe 313 and the same liquid outlet pipe 314, or can be realized by using two liquid inlet pipes 313 and two liquid outlet pipes 314. For the right heat exchange unit 31, the liquid flows into the liquid inlet pipe 313, first flows through the second flow channel 3121, then flows through the first flow channel 3111, and finally flows out from the liquid outlet pipe 314, thereby realizing the flow of the liquid.

[0105] In Figure 4 In the embodiment shown in FIG. 6, for the left heat exchange unit 31, the liquid outlet pipe 314 is in communication with the first flow channel 3111, and the liquid flows into the liquid inlet pipe 313, first flows through the second flow channel 3121, then flows through the first flow channel 3111, and finally flows out from the liquid outlet pipe 314, thereby realizing the flow of the liquid. For the middle heat exchange unit 31, the liquid flows into the liquid inlet pipe 313, flows through the first flow channel 3111 and the second flow channel 3121, and finally flows out from the liquid outlet pipe 314, and the two middle heat exchange units 31 can be realized by using the same liquid inlet pipe 313 and the same liquid outlet pipe 314, or can be realized by using two liquid inlet pipes 313 and two liquid outlet pipes 314. For the right heat exchange unit 31, the liquid flows into the liquid inlet pipe 313, first flows through the second flow channel 3121, then flows through the first flow channel 3111, and finally flows out from the liquid outlet pipe 314, thereby realizing the flow of the liquid.

[0106] Continuing to refer to Figure 5 and Figure 6 When the number of battery monomers 113 is multiple, the multiple battery monomers 113 are arranged in multiple rows, wherein the bottom of each battery monomer 113 is provided with a second heat exchange plate 312, and the side of the second battery monomer 113 provided with the pole assembly 1134 is provided with a first heat exchange plate 311, wherein the liquid can be provided into the second heat exchange plate 312 through multiple liquid inlet pipes 313, and finally flows out after passing through the first heat exchange plate 311.

[0107] It can be understood that the heat exchange unit 31 here can also be provided with a pump body, and the pump body can adjust the flow rate of the fluid.

[0108] The embodiment of the present application can realize the flow of the liquid by the liquid outlet pipe 314, the liquid outlet pipe 314 is in communication with the other one of the first flow channel 3111 and the second flow channel 3121, and the liquid outlet pipe 314 penetrates the other one of the second part 22 and the first part 21.

[0109] In some embodiments of the present application, the heat exchange unit 31 comprises one of an extruded piece and a cast piece. Here, the extruded piece refers to the heat exchange unit 31 processed by an extrusion process, and the cast piece refers to the heat exchange unit 31 processed by a casting process.

[0110] The embodiments of the present application can process the heat exchange unit 31 by an extrusion process or a casting process by comprising one of an extruded piece and a cast piece, so as to process the heat exchange unit 31 with the first notch 3112.

[0111] Optionally, the heat exchange unit 31 is one of an aluminum alloy piece and a copper alloy piece. Of course, the heat exchange unit 31 herein can also be made of other materials with heat conduction properties, such as titanium alloy or stainless steel.

[0112] The embodiments of the present application can make the heat exchange unit 31 have higher heat transfer capacity and improve the efficiency of heat exchange by using one of an aluminum alloy piece and a copper alloy piece.

[0113] Optionally, the first heat exchange plate 311 comprises at least two continuous bending segments, and the at least two continuous bending segments enclose the first notch 3112.

[0114] The first heat exchange plate 311 is generally in a plate structure, and the first heat exchange plate 311 can form a first notch 3112 by being bent three times. At this time, the three bending segments form a first notch 3112. When the number of first notches 3112 is multiple, multiple first notches 3112 can be formed by multiple bending.

[0115] The embodiments of the present application can form at least two continuous bending segments of the first heat exchange plate 311 by a bending process, so as to make the at least two continuous bending segments enclose the first notch 3112 avoiding the pole assembly 1134, which has the characteristics of high production efficiency and low cost.

[0116] In some embodiments of the present application, as shown in Figure 5 and Figure 6 The first heat exchange plate 311 is provided with a hollow region, and the hollow region forms the first notch 3112.

[0117] In the present example, the first notch 3112 is processed by a hole digging process, and multiple first notches 3112 can be processed at the same time, which improves the processing efficiency of the first notch 3112.

[0118] The first heat exchange plate 311 is provided with a hollowed region, and the hollowed region forms the first notch 3112. The first notch 3112 can be machined on the first heat exchange plate 311 through a hole digging process, and the first notch 3112 can better accommodate the pole column assembly 1134.

[0119] The first notch 3112 can be a rectangular hole or a circular hole, and can accommodate the pole column assembly 1134. The pole column assembly 1134 includes a pole column and a tab, and the tab is mounted on the pole column.

[0120] The second aspect of the embodiment of the application provides a use electric device 200, which comprises the battery device 100 mentioned in the above embodiment, and the battery device 100 is used to supply power for the use electric device 200.

[0121] The battery device 100 is arranged on the use electric device 200, and the battery device 100 can be arranged on the bottom, the head or the tail of the use electric device 200. The battery device 100 can be used to supply power for the use electric device 200, for example, the battery device 100 can be used as an operating power supply of the use electric device 200. The use electric device 200 can further comprise a controller 300 and a motor 400, and the controller 300 is used to control the battery device 100 to supply power for the motor 400, for example, to meet the working power demand of the use electric device 200 during starting, navigation and driving.

[0122] The use electric device 200 of the embodiment of the application uses the battery device 100 mentioned in the above embodiment, and the performance of the battery device 100 is improved, so that the working power performance of the use electric device 200 is improved.

[0123] The above description is only a summary of the technical scheme of the application. In order to more clearly understand the technical means of the application, the above description can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described.

[0124] A first aspect of embodiments of the present application provides a battery device 100, comprising a battery cell assembly 10, a box 20, and a heat exchange assembly 30. The battery cell assembly 10 comprises a battery cell unit 11, the battery cell unit 11 comprises a plurality of battery cells 113, the battery cell 113 comprises a pole assembly 1134 and a first surface 1131 and a second surface 1132 intersectingly arranged, and the pole assembly 1134 is arranged on the first surface 1131. The box 20 comprises a first part 21, the battery cell 113 is arranged on the bearing surface 211 of the first part 21, and the first surface 1131 is intersectingly arranged with the bearing surface 211 of the first part 21. The heat exchange assembly 30 comprises a plurality of heat exchange units 31, each heat exchange unit 31 comprises a first heat exchange plate 311 and a second heat exchange plate 312, the first heat exchange plate 311 is in thermal conductive connection with the first surface 1131, the second heat exchange plate 312 is in thermal conductive connection with at least part of the second surface 1132, and the first heat exchange plate 311 is provided with a first gap avoiding the pole assembly 1134. Further, the battery cell unit 11 comprises a first battery cell group 111 and a second battery cell group 112 arranged at intervals, all battery cells of the first battery cell group 111 have the same orientation, all battery cells of the second battery cell group 112 have the same orientation, and the pole assembly 1134 of the first battery cell group 111 and the pole assembly 1134 of the second battery cell group 112 are oppositely arranged; the first heat exchange plate 311 is arranged between the first battery cell group 111 and the second battery cell group 112. Further, the number of battery cell units 11 is at least two, and the adjacent two battery cell units 11 are arranged at intervals. Further, the second surface 1132 comprises a first sub-surface 11321, a second sub-surface 11322, a third sub-surface 11323 and a fourth sub-surface connected in sequence, the first sub-surface 11321, the second sub-surface 11322, the third sub-surface 11323 and the fourth sub-surface form a rectangular cylindrical structure, wherein the area of the first sub-surface 11321 is greater than the area of the second sub-surface 11322, and at least one of the first sub-surface 11321, the second sub-surface 11322, the third sub-surface 11323 and the fourth sub-surface is in thermal conductive connection with the second heat exchange plate 312. Further, the second sub-surface 11322 and the fourth sub-surface are both in thermal conductive connection with the second heat exchange plate 312. Further, in each heat exchange unit 31, the first heat exchange plate 311 comprises a first flow channel 3111, the second heat exchange plate 312 comprises a second flow channel 3121, and the first flow channel 3111 and the second flow channel 3121 are in communication. Further, the battery device 100 further comprises a second part 22 in cover connection with the first part 21, and the first part 21 and the second part 22 form an accommodation space 23 for accommodating the battery cell assembly 10; the heat exchange unit 31 further comprises a liquid inlet pipe 313, the liquid inlet pipe 313 is in communication with one of the first flow channel 3111 and the second flow channel 3121, and the liquid inlet pipe 313 penetrates one of the second part 22 and the first part 21.Further, the heat exchange unit 31 further comprises a liquid outlet pipe 314, the liquid outlet pipe 314 is communicated with the other one of the first flow channel 3111 and the second flow channel 3121, and the liquid outlet pipe 314 penetrates the other one of the second part 22 and the first part 21. Further, the heat exchange unit 31 comprises one of an extruded piece and a cast piece, and / or the heat exchange unit 31 is one of an aluminum alloy piece and a copper alloy piece. Further, the first heat exchange plate 311 comprises at least two continuous bending sections, and the at least two continuous bending sections enclose the first notch 3112. Further, the first heat exchange plate 311 is provided with a hollowed-out region, and the hollowed-out region forms the first notch 3112.

[0125] A second aspect of the embodiments of the present application provides a power consuming device 200 comprising the battery device 100 as mentioned in the above embodiments, the battery device 100 being configured to supply power to the power consuming device 200.

[0126] The above description is merely preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions easily conceived by those skilled in the art within the technical scope disclosed by the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A battery device, characterized by, The battery device comprises: a battery monomer assembly comprising a battery monomer unit, the battery monomer unit comprising a plurality of battery monomers, the battery monomers comprising a pole assembly and a first surface and a second surface arranged in intersection, the pole assembly being arranged on the first surface; a box comprising a first part, the battery monomers being arranged on a bearing surface of the first part, and the first surface being arranged in intersection with the bearing surface; and a heat exchange assembly comprising a plurality of heat exchange units, each of the heat exchange units comprising a first heat exchange plate and a second heat exchange plate, the first heat exchange plate being in thermal conductive connection with the first surface, the second heat exchange plate being in thermal conductive connection with at least part of the second surface, and the first heat exchange plate being provided with a first gap for avoiding the pole assembly. The battery monomer unit comprises:

2. The battery device of claim 1, wherein a first battery monomer group and a second battery monomer group arranged in interval, all the battery monomers of the first battery monomer group having the same orientation, all the battery monomers of the second battery monomer group having the same orientation, and the pole assembly of the first battery monomer group and the pole assembly of the second battery monomer group being arranged in opposite directions; the first heat exchange plate being arranged between the first battery monomer group and the second battery monomer group. The number of the battery monomer units is at least two, and two adjacent battery monomer units are arranged in interval.

3. The battery device of claim 1, wherein The second surface comprises a first sub-surface, a second sub-surface, a third sub-surface and a fourth sub-surface connected in sequence, the first sub-surface, the second sub-surface, the third sub-surface and the fourth sub-surface forming a rectangular cylindrical structure, wherein the area of the first sub-surface is greater than the area of the second sub-surface, and at least one of the first sub-surface, the second sub-surface, the third sub-surface and the fourth sub-surface is in thermal conductive connection with the second heat exchange plate.

4. The battery device of claim 1, wherein The second sub-surface and the fourth sub-surface are both in thermal conductive connection with the second heat exchange plate.

5. The battery device of claim 4, wherein In each of the heat exchange units, the first heat exchange plate comprises a first flow channel, and the second heat exchange plate comprises a second flow channel, the first flow channel being in communication with the second flow channel.

6. The battery device according to any one of claims 1 to 5, wherein The battery device further comprises a second part in cover connection with the first part, and the first part and the second part form a containing space for containing the battery monomer assembly; 7. The battery device of claim 6, wherein the heat exchange unit further comprises an inlet pipe in communication with one of the first flow channel and the second flow channel, and the inlet pipe penetrates one of the second part and the first part. The heat exchange unit further comprises an outlet pipe in communication with the other of the first flow channel and the second flow channel, and the outlet pipe penetrates the other of the second part and the first part.

8. The battery device of claim 7, wherein The heat exchange unit is one of an extruded piece and a cast piece, and / or the heat exchange unit is one of an aluminum alloy piece and a copper alloy piece.

9. The battery device according to any one of claims 1 to 5, wherein The first heat exchange plate comprises at least two continuous bending sections, and the at least two continuous bending sections form the first gap.

10. The battery device according to any one of claims 1 to 5, wherein The first heat exchange plate is provided with a hollowed-out area forming the first gap.

11. The battery device according to any one of claims 1 to 5, wherein ​ 12. An electrical device, characterized by The battery device as claimed in any one of claims 1 to 11 is included for supplying power to the power consuming device.

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