Battery devices and electrical equipment

Abstract

The present application relates to a battery device and an electrical equipment, wherein the battery device comprises at least two battery cells and a heat insulating member, wherein the at least two battery cells are arranged side by side along a first direction, and the heat insulating member is arranged on at least one side of at least one battery cell in the first direction; wherein the heat insulating member comprises a first support rib, a second support rib and a buffer portion, wherein the buffer portion is filled in the gap between the first support rib and the second support rib, and the buffer portion is constructed as a structure capable of elastic deformation. An electrical equipment comprises the above-mentioned battery device. In the above-mentioned battery device and electrical equipment, the buffer portion is filled in the gap between the first support rib and the second support rib, and the buffer portion is constructed as a structure capable of elastic deformation, wherein the support rib can limit the expansion and deformation of the battery cell, and the setting of the buffer portion can provide heat insulation and provide a release space for the expansion of the battery cell, so that the heat insulating member has good heat insulation performance and the ability to adapt to the expansion and deformation of the battery cell.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery device and an electrical equipment. Background Art

[0002] With the popularization and promotion of new energy vehicles, the charging and discharging performance, endurance, etc. of new energy vehicles are increasingly attracting people's attention and attention. Power batteries, as the power energy source of new energy vehicles, are widely used.

[0003] The battery consists of battery cells. During the charge and discharge process of the battery cells, once the battery goes into thermal runaway, a large amount of heat will be generated and the temperature will rise rapidly. In order to delay or block the spread of heat generated by the electrode assembly, a heat insulator is usually set between two adjacent battery cells. However, most traditional heat insulators use hard rubber pads, which results in poor insulation effect and heavy weight, and cannot adapt well to the expansion and deformation of battery cells. Utility Model Content

[0004] Based on this, it is necessary to provide a battery device and electrical equipment to address the problem that the thermal insulation of the battery is poor and heavy.

[0005] A battery device includes at least two battery cells and a heat insulating member, wherein the at least two battery cells are arranged side by side along a first direction, and the heat insulating member is arranged on at least one side of at least one battery cell in the first direction; wherein the heat insulating member includes a first support rib, a second support rib and a buffer portion, wherein the buffer portion is filled in the gap between the first support rib and the second support rib, and the buffer portion is constructed as a structure capable of elastic deformation. In the above-mentioned battery device, the buffer portion is filled in the gap between the first support rib and the second support rib, and the buffer portion is constructed as a structure capable of elastic deformation. While the support rib can limit the expansion and deformation of the battery cell, the setting of the buffer portion can provide heat insulation and provide a release space for the expansion of the battery cell, so that the heat insulating member has good heat insulation performance and the ability to adapt to the expansion and deformation of the battery cell.

[0006] In some embodiments, in a second direction intersecting the first direction, the heat insulating member has a middle region and a main region adjacent to the middle region; the middle region is provided with a first support rib, and the main region is provided with a second support rib. In this way, the arrangement of each support rib can limit the expansion and deformation of the battery cell.

[0007] In some embodiments, the heat insulating member includes a heat insulating body, the heat insulating body has a receiving groove on at least one side in the first direction, and the first supporting rib and the second supporting rib are arranged in the receiving groove. In this way, the first supporting rib and the second supporting rib are arranged in the receiving groove of the heat insulating member, which can improve the space utilization rate of the heat insulating member.

[0008] In some embodiments, the first support rib, the second support rib and the heat insulation body are an integrated structure. In this way, the first support rib, the second support rib and the heat insulation body are formed in one piece, so that the heat insulation piece has good integrity and is easy to assemble quickly.

[0009] In some embodiments, the number of the first support ribs is at least two, and the first support ribs are spaced apart along the second direction. Thus, the first support ribs are spaced apart along the second direction, so that the first support ribs can limit the expansion and deformation of the battery cell at different positions.

[0010] In some embodiments, in the first direction, the ratio of the width of each first support rib to the width of the thermal insulation member is 0.2-0.5. Thus, by limiting the ratio of the width of each first support rib to the width of the thermal insulation member, the first support ribs can limit the deformation of the battery cells and prevent them from extending beyond the accommodating groove of the thermal insulation body.

[0011] In some embodiments, each first support rib is vertically arranged on at least one side of the accommodating groove in the first direction. In this way, each first support rib is vertically arranged to achieve the supporting effect of each first support rib on the contact surface of the battery cell, thereby limiting the expansion deformation of the battery cell.

[0012] In some embodiments, each first support rib is constructed as a linear structure, so that each first support rib can better support the contact surface of the battery cell.

[0013] In some embodiments, the number of the second support ribs is at least two, and the second support ribs are spaced apart along the second direction. Thus, the second support ribs are spaced apart along the second direction, so that the second support ribs can provide release space for the battery cell to expand at different positions.

[0014] In some embodiments, in the first direction, the ratio of the width of each second support rib to the width of the thermal insulation member is 0.4-0.5. Thus, by limiting the ratio of the width of each second support rib to the width of the thermal insulation member, the second support ribs can limit the deformation of the battery cells and prevent them from extending beyond the accommodating groove of the thermal insulation body.

[0015] In some embodiments, each second support rib is disposed on at least one side of the accommodating groove in the first direction, and each second support rib is inclined in a direction away from or close to the first support rib. In this way, each second support rib can be deformed more easily, thereby providing a release space for the expansion of the battery cell.

[0016] In some embodiments, each second support rib is configured as an arc-shaped structure, so that each second support rib can better provide a release space for the expansion of the battery cell.

[0017] In some embodiments, among the second support ribs on the same side of the heat insulation body, the ends of the second support ribs away from the heat insulation body together form a concave arc contour line. In this way, the ends of the second support ribs away from the heat insulation body together form a concave arc contour line, which can better match the contact surface of the battery cell after expansion.

[0018] In some embodiments, the buffer portion is filled in the gap between the first support rib, the second support rib and the heat insulation body. In this way, the provision of the buffer portion can enable the heat insulation component to have heat insulation performance and the ability to adapt to the expansion and deformation of the battery cell.

[0019] In some embodiments, the buffer portion is constructed of a material with a thermal conductivity less than or equal to 0.1 W / m·K. In this way, the thermal insulation component can have better thermal insulation performance to reduce heat transfer and heat diffusion of the battery cell.

[0020] In some embodiments, the buffer portion is constructed as a foam material structure, so that the heat insulating element can have heat insulating properties and better adapt to the expansion and deformation of the battery cell.

[0021] In some embodiments, the first support rib, the second support rib and the heat insulation body are constructed as a plastic structure, so that the heat insulation element has good heat insulation performance and the ability to adapt to the expansion and deformation of the battery cell.

[0022] In some embodiments, the center of the middle area coincides with the center of the heat insulating member, and in the second direction, the ratio of the size of the middle area to the size of the heat insulating member is 20% to 30%. In this way, the heat insulating member can better support the contact surface of the battery cell.

[0023] In some embodiments, the bending modulus of the second support rib is smaller than that of the first support rib. Thus, since the bending modulus of the second support rib is smaller than that of the first support rib, the second support rib is more likely to deform than the first support rib. While the first support rib limits the expansion and deformation of the battery cell, the second support rib can provide a release space for the expansion of the battery cell, so that the thermal insulation has good thermal insulation performance and the ability to adapt to the expansion and deformation of the battery cell.

[0024] In some embodiments, the bending modulus of the first support rib is 400 MPa-2500 MPa. Thus, by limiting the bending modulus of the first support rib, the first support rib can play a certain supporting role on the battery cell.

[0025] In some embodiments, the bending modulus of the second support rib is 300 MPa-2000 MPa. Thus, by limiting the bending modulus of the second support rib, the second support rib can be deformed, and a release space can be provided for the expansion of the battery cell.

[0026] In some embodiments, the battery device further comprises a box beam, and a heat insulating member is provided between the box beam and the battery cell, so that the box beam and the battery cell can be better insulated from each other and the heat diffusion from the battery cell to the box beam can be reduced.

[0027] An electrical device includes the above-mentioned battery device. In the above-mentioned electrical device, the buffer portion is filled in the gap between the first support rib and the second support rib, and the buffer portion is constructed as a structure that can undergo elastic deformation. While the support rib can limit the expansion and deformation of the battery cell, the setting of the buffer portion can insulate heat and provide a release space for the expansion of the battery cell, so that the heat insulation has good heat insulation performance and the ability to adapt to the expansion and deformation of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of electrical equipment in some embodiments of the present application.

[0029] Figure 2 Schematic diagram of a battery device in some embodiments of the present application.

[0030] Figure 3 This is a schematic diagram of the thermal insulation component in some embodiments of the present application.

[0031] Figure 4 for Figure 3 Front view of the thermal insulation shown.

[0032] Figure 5 for Figure 4 AA cross-sectional view of the thermal insulation component shown.

[0033] Figure 6 This is a cross-sectional view of the AA plane of the thermal insulation component in other embodiments of the present application.

[0034] Reference numerals:

[0035] 10. Vehicle; 11. Controller; 12. Motor; 20. Battery device; 100. Battery cell; 200. Heat insulating member; 201. Middle region; 202. Main body region; 210. First supporting rib; 220. Second supporting rib; 230. Heat insulating body; 231. Accommodating groove; 240. Buffering portion. DETAILED DESCRIPTION

[0036] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0038] 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 more than two, unless otherwise clearly and specifically defined.

[0039] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] 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, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0041] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0042] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0043] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill 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.

[0044] With the popularization and promotion of new energy vehicles, the charging and discharging performance, endurance, etc. of new energy vehicles are increasingly attracting people's attention and attention. Batteries, as the power source of new energy vehicles, are widely used.

[0045] The battery consists of battery cells. During the charge and discharge process of the battery cells, once the battery goes into thermal runaway, a large amount of heat will be generated and the temperature will rise rapidly. In order to delay or block the spread of heat generated by the electrode assembly, a heat insulator is usually set between two adjacent battery cells. However, most traditional heat insulators use hard rubber pads, which results in poor insulation effect and heavy weight, and cannot adapt well to the expansion and deformation of battery cells.

[0046] Based on the above considerations and after in-depth research, the present application designs a battery device and an electrical equipment. In the thermal insulation of the battery device, a buffer portion is filled in the gap between the first support rib and the second support rib, and the buffer portion is constructed as a structure that can undergo elastic deformation. While the support ribs can limit the expansion and deformation of the battery cells, the setting of the buffer portion can provide heat insulation and provide a release space for the expansion of the battery cells, so that the thermal insulation component has good thermal insulation performance and the ability to adapt to the expansion and deformation of the battery cells.

[0047] The present application provides an electric device using a battery device as a power source, and the electric device can be, but is not limited to, a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, etc. The vehicle can be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc.; the spacecraft includes an airplane, a rocket, a space shuttle, and a spacecraft, etc.; the electric toy includes a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc.; the electric tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and a railway electric tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, and an electric planer, etc.

[0048] For the convenience of description, the following embodiments are described by taking a vehicle 10 as an example of an electrical device in an embodiment of the present application.

[0049] Please refer to Figure 1 The vehicle 10 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle. A battery device 20 is provided inside the vehicle 10. The battery device 20 may be provided at the bottom, head or tail of the vehicle 10. The battery device 20 may be used to power the vehicle 10. For example, the battery device 20 may be used as an operating power source for the vehicle 10. The vehicle 10 may further include a controller 11 and a motor 12. The controller 11 is used to control the battery device 20 to power the motor 12, for example, to meet the power requirements for starting, navigating and driving the vehicle 10.

[0050] In some embodiments of the present application, the battery device 20 can not only serve as an operating power source for the vehicle 10 , but also serve as a driving power source for the vehicle 10 , replacing or partially replacing fuel or natural gas to provide driving force for the vehicle 10 .

[0051] Please refer to Figures 2 to 5 In one embodiment, the battery device 20 includes at least two battery cells 100 and a heat insulating member 200, wherein the at least two battery cells 100 are arranged side by side along a first direction, and the heat insulating member 200 is arranged on at least one side of at least one battery cell 100 in the first direction; wherein the heat insulating member 200 includes a first support rib 210, a second support rib 220 and a buffer portion 240, wherein the buffer portion 240 is filled in the gap between the first support rib 210 and the second support rib 220, and the buffer portion 240 is constructed as a structure capable of elastic deformation.

[0052] It should be noted that the first direction is Figure 5 The X direction is the thickness direction of the battery cell 100; the second direction is Figure 5 The Y direction is the height direction of the battery cell 100 .

[0053] In the embodiment of the present application, there may be multiple battery cells 100, and the multiple battery cells 100 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 100 are both connected in series and in parallel. The multiple battery cells 100 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 100 is placed on one side of the box; of course, it is also possible that the multiple battery cells 100 are first connected in series, in parallel, or in a mixed connection to form a battery module, and the multiple battery modules are then connected in series, in parallel, or in a mixed connection to form a whole. Each battery cell 100 may be a secondary battery or a primary battery; it may also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 100 may be cylindrical, flat, rectangular, or in other shapes.

[0054] In the embodiment of the present application, the heat insulating member 200 is disposed on at least one side of the battery cell 100 in the first direction, which can be understood as: the heat insulating member 200 is located between two adjacent battery cells 100, or the heat insulating member 200 is located between the battery cell 100 and the end cover of the battery box. The heat insulating member 200 is a component used to reduce heat transfer and heat diffusion to enhance the heat insulation performance of the battery cell 100 and improve the thermal runaway resistance of the battery cell 100. Among them, the heat insulating member 200 can be, but is not limited to, a flat body, a rectangular parallelepiped, etc., and is not specifically limited here.

[0055] In the embodiment of the present application, the buffer portion 240 is filled in the gap between the first support rib 210 and the second support rib 220 . Since the buffer portion 240 is constructed as a structure capable of elastic deformation, the buffer portion 240 can provide a release space for the expansion of the battery cell 100 .

[0056] In the above-mentioned battery device 20, the buffer portion 240 is filled in the gap between the first support rib 210 and the second support rib 220, and the buffer portion 240 is constructed as a structure that can undergo elastic deformation. While the support ribs can limit the expansion and deformation of the battery cell 100, the setting of the buffer portion 240 can insulate and provide a release space for the expansion of the battery cell, so that the thermal insulation component 200 has good thermal insulation performance and the ability to adapt to the expansion and deformation of the battery cell.

[0057] According to some embodiments of this application, please refer to Figure 5 In a second direction intersecting with the first direction, the thermal insulation member 200 has a middle region 201 and a main region 202 adjacent to the middle region 201 ; the middle region 201 is provided with a first supporting rib 210 , and the main region 202 is provided with a second supporting rib 220 .

[0058] In the embodiment of the present application, the middle area 201 is provided with a first support rib 210, and the main area 202 is provided with a second support rib 220. The number of the first support rib 210 and the second support rib 220 is not limited to one, that is, the number of the first support rib 210 and the second support rib 220 can be at least two. The first support rib 210 and the second support rib 220 can be in various structural forms, for example, the first support rib 210 and the second support rib 220 are in strip, column or other shapes.

[0059] Through the above arrangement, the arrangement of each supporting rib can limit the expansion and deformation of the battery cell 100 .

[0060] According to some embodiments of this application, please refer to Figure 5 and Figure 3 The heat insulating member 200 includes a heat insulating body 230 , and the heat insulating body 230 has a receiving groove 231 on at least one side in the first direction, and the first supporting rib 210 and the second supporting rib 220 are disposed in the receiving groove 231 .

[0061] It should be noted that the thermal insulation member 200 has a receiving groove 231 on at least one side in the first direction, that is, the thermal insulation member 200 has a receiving groove 231 only on one side in the first direction, or the thermal insulation member 200 has receiving grooves 231 on both sides in the first direction.

[0062] In the embodiment of the present application, the receiving groove 231 may be in various shapes, such as a square groove, a circular groove or other shapes, and the shape of the receiving groove 231 is not specifically limited herein.

[0063] In an embodiment of the present application, the first support rib 210 and the second support rib 220 are arranged in the receiving groove 231, that is, the width of the receiving groove 231 in the first direction is greater than or equal to the width of each support rib, so that the first support rib 210 and the second support rib 220 are completely accommodated in the receiving groove 231.

[0064] Through the above arrangement, the first supporting rib 210 and the second supporting rib 220 are arranged in the receiving groove 231 of the thermal insulation member 200 , which can improve the space utilization rate of the thermal insulation member 200 .

[0065] According to some embodiments of this application, please refer to Figure 5 The first supporting rib 210, the second supporting rib 220 and the heat insulation body 230 are an integrated structure.

[0066] In the embodiment of the present application, the first support rib 210, the second support rib 220 and the insulation body 230 can be integrally formed in a variety of ways, such as injection molding, casting, etc., which are not specifically limited here.

[0067] Through the above arrangement, the first support rib 210, the second support rib 220 and the heat insulation body 230 are integrally formed, so that the heat insulation component 200 has good integrity and is easy to assemble quickly.

[0068] According to some embodiments of this application, please refer to Figure 5 The number of the first support ribs 210 is at least two, and the first support ribs 210 are spaced apart and distributed along the second direction.

[0069] It should be noted that the first support ribs 210 are distributed at intervals along the second direction, that is, the first support ribs 210 are distributed at intervals along the height direction of the battery cell 100 .

[0070] In the embodiment of the present application, the first support ribs 210 may be distributed at equal intervals or at non-equal intervals along the second direction. The shapes and sizes of the first support ribs 210 may be the same to balance the support force, or the shapes and sizes of the first support ribs 210 may be different.

[0071] Through the above arrangement, the first support ribs 210 are distributed at intervals along the second direction, so that the first support ribs 210 can limit the expansion and deformation of the battery cell 100 at different positions.

[0072] According to some embodiments of this application, please refer to Figure 5 In the first direction, the ratio of the width of each first supporting rib 210 to the width of the thermal insulation member 200 is 0.2-0.5.

[0073] In the embodiment of the present application, the width design of each first support rib 210 needs to consider the function of limiting the deformation of the battery, and each first support rib 210 does not extend beyond the receiving groove 231 of the heat insulation body 230.

[0074] Through the above arrangement, by limiting the width ratio of each first support rib 210 to the width of the thermal insulation member 200 , the first support rib 210 can limit the deformation of the battery cell 100 and prevent it from extending beyond the receiving groove 231 of the thermal insulation body 230 .

[0075] According to some embodiments of this application, please refer to Figure 5 Each first supporting rib 210 is vertically disposed on at least one side of the accommodating groove 231 in the first direction.

[0076] It should be noted that each first support rib 210 is vertically disposed on at least one side of the receiving groove 231 in the first direction, which can be understood as: each first support rib 210 forms an angle of 90 degrees with the groove wall of the receiving groove 231 in the first direction.

[0077] Through the above arrangement, each first support rib 210 is vertically arranged, so that each first support rib 210 can support the contact surface of the battery cell 100 , thereby limiting the expansion and deformation of the battery cell 100 .

[0078] According to some embodiments of this application, please refer to Figure 5 , each first supporting rib 210 is constructed as a linear structure.

[0079] In the embodiment of the present application, each first support rib 210 is a linear structure. Specifically, each first support rib 210 can be I-shaped or other linear bar structures.

[0080] Through the above arrangement, each first supporting rib 210 can better support the contact surface of the battery cell 100 .

[0081] According to some embodiments of this application, please refer to Figure 5 The number of the second support ribs 220 is at least two, and the second support ribs 220 are spaced apart and distributed along the second direction.

[0082] It should be noted that the second support ribs 220 are distributed at intervals along the second direction, that is, the second support ribs 220 are distributed at intervals along the height direction of the battery cell 100 .

[0083] In the embodiment of the present application, the second support ribs 220 may be distributed at equal intervals or at non-equal intervals along the second direction. The shapes and sizes of the second support ribs 220 may be the same to facilitate balancing the supporting force, and the shapes and sizes of the first support ribs 210 may also be different.

[0084] Through the above arrangement, the second support ribs 220 are distributed at intervals along the second direction, so that the second support ribs 220 can provide release space for the battery cell 100 to expand at different positions.

[0085] According to some embodiments of this application, please refer to Figure 5 In the first direction, the ratio of the width of each second supporting rib 220 to the width of the thermal insulation member 200 is 0.4-0.5.

[0086] In the embodiment of the present application, the width design of each second support rib 220 needs to consider the function of limiting the deformation of the battery, and each second support rib 220 does not extend beyond the receiving groove 231 of the heat insulation body 230.

[0087] Through the above arrangement, by limiting the width ratio of each second support rib 220 to the width of the thermal insulation member 200 , the second support rib 220 can limit the deformation of the battery cell 100 and does not extend beyond the receiving groove 231 of the thermal insulation body 230 .

[0088] According to some embodiments of this application, please refer to Figure 5 Each second supporting rib 220 is disposed on at least one side of the accommodating groove 231 in the first direction, and each second supporting rib 220 is inclined in a direction away from or close to the first supporting rib 210 .

[0089] It should be noted that each second support rib 220 is tilted away from or close to the first support rib 210 , which can be understood as: each second support rib 220 is arranged at an acute angle or an obtuse angle greater than 0 degrees with the groove wall of the accommodating groove 231 in the first direction.

[0090] In the embodiment of the present application, the angles formed between each second supporting rib 220 and at least one side of the accommodating groove 231 in the first direction may be the same or different, which is not specifically limited here.

[0091] Through the above arrangement, each second supporting rib 220 can be deformed more easily, thereby providing a release space for the battery cell 100 to expand.

[0092] According to some embodiments of this application, please refer to Figure 5, each second supporting rib 220 is constructed as an arc-shaped structure.

[0093] In the embodiment of the present application, each second support rib 220 is an arc-shaped structure. Specifically, each second support rib 220 can be in a circular arc shape, an elliptical arc shape or other arc-shaped structure.

[0094] Through the above arrangement, each second supporting rib 220 can better provide a release space for the expansion of the battery cell 100 .

[0095] According to some embodiments of this application, please refer to Figure 6 In each of the second support ribs 220 on the same side of the insulation body 230, one end of each of the second support ribs 220 away from the insulation body 230 jointly forms a contour line that is a concave arc.

[0096] In the embodiments of this application, reference is made to Figure 6 The ends of the second supporting ribs 220 away from the heat insulation body 230 jointly form a contour line L1 that is a concave arc. The concave arc can be an arc with the midpoint of the heat insulation body 230 as the symmetry center.

[0097] Through the above arrangement, the ends of the second support ribs 220 away from the heat insulation body 230 jointly form a contour line in the form of a concave arc, which can better match the contact surface of the battery cell 100 after expansion.

[0098] According to some embodiments of this application, please refer to Figure 5 and Figure 6 The buffer portion 240 is filled in the gap between the first supporting rib 210 , the second supporting rib 220 and the heat insulation body 230 .

[0099] In an embodiment of the present application, the buffer portion 240 is filled in the gap between the first support rib 210, the second support rib 220 and the insulation body 230. Since the buffer portion 240 is constructed as a structure that can undergo elastic deformation, the buffer portion 240 can provide a release space for the expansion of the battery cell 100.

[0100] Through the above configuration, the buffer portion 240 can enable the heat insulating member 200 to have heat insulating properties and the ability to adapt to the expansion and deformation of the battery cell 100 .

[0101] According to some embodiments of this application, please refer to Figure 5 The buffer portion 240 is constructed of a material having a thermal conductivity less than or equal to 0.1 W / m·K.

[0102] In the embodiment of the present application, the thermal conductivity of the buffer portion 240 is a physical quantity that measures the thermal conductivity of a material. It indicates the amount of heat transferred through an area of ​​1 square meter per unit time when the temperature difference on both sides of a 1-meter-thick material is 1 degree under stable heat transfer conditions, reflecting the ability of the buffer portion 240 to resist heat transfer.

[0103] Through the above arrangement, the heat insulating member 200 can have better heat insulating performance to reduce heat transfer and heat diffusion of the battery cell 100 .

[0104] According to some embodiments of this application, please refer to Figure 5 , the buffer portion 240 is constructed as a foam material structure.

[0105] In the embodiments of the present application, the foaming material may be any one of foaming polyurethane, foaming polyphenylene ether, foaming polypropylene, and micro-foaming materials.

[0106] Through the above arrangement, the heat insulating member 200 can have heat insulating properties and better adapt to the expansion and deformation of the battery cell 100 .

[0107] According to some embodiments of this application, please refer to Figure 5 The first supporting rib 210, the second supporting rib 220 and the heat insulating body 230 are constructed as a plastic structure.

[0108] In the embodiment of the present application, the first support rib 210, the second support rib 220 and the heat insulation body 230 can be integrally formed by injection molding, which has high efficiency and good integrity.

[0109] Through the above arrangement, the heat insulating member 200 has good heat insulating performance and the ability to adapt to the expansion and deformation of the battery cell 100 .

[0110] According to some embodiments of this application, please refer to Figure 5 , the center of the middle area 201 is arranged to coincide with the center of the thermal insulation member 200; and in the second direction, the ratio of the size of the middle area 201 to the size of the thermal insulation member 200 is 20% to 30%.

[0111] In the embodiment of the present application, the two main body regions 202 are symmetrically distributed on opposite sides of the middle region 201 along the second direction.

[0112] Through the above arrangement, the heat insulating member 200 can better support the contact surface of the battery cell 100 .

[0113] According to some embodiments of this application, please refer to Figure 5 , the bending modulus of the second support rib 220 is smaller than the bending modulus of the first support rib 210.

[0114] In the embodiments of the present application, the bending modulus refers to the ability of a material to resist bending deformation within its elastic limit, that is, the stiffness exhibited when the material is bent. The bending modulus of the second support rib 220 is less than that of the first support rib 210, indicating that the second support rib 220 is more likely to deform than the first support rib 210 when subjected to a bending force.

[0115] Through the above arrangement, since the bending modulus of the second support rib 220 is smaller than that of the first support rib 210, the second support rib 220 is more easily deformed than the first support rib 210. While the first support rib 210 limits the expansion and deformation of the battery cell 100, the second support rib 220 can provide a release space for the expansion of the battery cell 100, so that the thermal insulation component 200 has good thermal insulation performance and the ability to adapt to the expansion and deformation of the battery cell 100.

[0116] According to some embodiments of this application, please refer to Figure 5 , the bending modulus of the first supporting rib 210 is 400MPa~2500MPa.

[0117] In the embodiment of the present application, the first support rib 210 is disposed in the middle region 201 of the heat insulating member 200 , and the design of the bending modulus of the first support rib 210 needs to be considered to limit the expansion deformation of the battery cell 100 .

[0118] Through the above configuration, by limiting the bending modulus of the first support rib 210 , the first support rib 210 can play a certain supporting role on the battery cell 100 .

[0119] According to some embodiments of this application, please refer to Figure 5 , the bending modulus of the second supporting rib 220 is 300MPa~2000MPa.

[0120] In the embodiment of the present application, the second support rib 220 is disposed in the main region 202 of the thermal insulation member 200 , and the design of the bending modulus of the second support rib 220 needs to consider providing a release space for the expansion of the battery cell 100 .

[0121] Through the above configuration, by limiting the bending modulus of the second support rib 220 , the second support rib 220 can be deformed, thereby providing a release space for the expansion of the battery cell 100 .

[0122] According to some embodiments of this application, please refer to Figure 5 The battery device 20 further includes a box beam, and a heat insulating member 200 is disposed between the box beam and the battery cell 100 .

[0123] Through the above arrangement, the box beam and the battery cell 100 can be better insulated from each other, thereby reducing the heat diffusion from the battery cell 100 to the box beam.

[0124] Please refer to Figure 1 In one embodiment, the electrical equipment includes the battery device 20 described above.

[0125] It should be noted that the electrical equipment may be, but is not limited to, a vehicle 10 , a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, and the like.

[0126] In the above-mentioned electrical equipment, the second support ribs 220 of the thermal insulation 200 in the battery device 20 are more easily deformed than the first support ribs 210. While the first support ribs 210 limit the expansion and deformation of the battery cells 100, the second support ribs 220 can provide a release space for the expansion of the battery cells 100, so that the thermal insulation 200 has good thermal insulation performance and the ability to adapt to the expansion and deformation of the battery cells 100.

[0127] According to some embodiments of the present application, see Figures 2 to 6 The present application provides a battery device 20, which includes at least two battery cells 100 and a heat insulating member 200, wherein the at least two battery cells 100 are arranged side by side along a first direction, and the heat insulating member 200 is arranged on at least one side of at least one battery cell 100 in the first direction; wherein, in a second direction intersecting with the first direction, the heat insulating member 200 has an intermediate region 201 and a main region 202 adjacent to the intermediate region 201, and the heat insulating member 200 includes a heat insulating body 230, at least two first support ribs 210, at least two second support ribs 220 and a buffer portion 240, and the heat insulating body 230 has a receiving groove 231 on at least one side in the first direction, and the first support rib 210 and the second support rib 220 are integrally arranged in the receiving groove 231, the intermediate region 201 is provided with at least two first support ribs 210, and the main region 202 is provided with at least two second support ribs 220, and the bending modulus of the second support rib 220 is smaller than the bending modulus of the first support rib 210.

[0128] The first support ribs 210 are spaced apart along the second direction, and are vertically disposed on at least one side of the receiving groove 231 in the first direction. The second support ribs 220 are spaced apart along the second direction, and are disposed on at least one side of the receiving groove 231 in the first direction. In the second support ribs 220 on the same side of the heat insulation body 230, one end of each second support rib 220 away from the heat insulation body 230 forms a concave arc contour line together, and the first support ribs 210, the second support ribs 220 and the heat insulation body 230 are constructed as a plastic structure. The buffer portion 240 is filled in the gap between the first support ribs 210, the second support ribs 220 and the heat insulation body 230, and the buffer portion 240 is constructed as a foam material structure with a thermal conductivity less than or equal to 0.1 W / m·K.

[0129] According to some embodiments of the present application, see Figure 1 The present application provides an electrical device, which includes the above-mentioned battery device 20.

[0130] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; 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 present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery device (20), characterized in that: include: At least two battery cells (100) are arranged side by side along a first direction; A heat insulating member (200) provided on at least one side of at least one of the battery cells (100) in the first direction; The thermal insulation component (200) comprises a first support rib (210), a second support rib (220) and a buffer portion (240); the buffer portion (240) is filled in a gap between the first support rib (210) and the second support rib (220); and the buffer portion (240) is constructed as a structure capable of elastic deformation.

2. The battery device (20) according to claim 1, characterized in that: In a second direction intersecting with the first direction, the thermal insulation component (200) has a middle region (201) and a main region (202) adjacent to the middle region (201); the middle region (201) is provided with the first supporting rib (210), and the main region (202) is provided with the second supporting rib (220).

3. The battery device (20) according to claim 2, characterized in that: The heat insulating member (200) comprises a heat insulating body (230), the heat insulating body (230) having a containing groove (231) on at least one side in the first direction, and the first supporting rib (210) and the second supporting rib (220) are arranged in the containing groove (231).

4. The battery device (20) according to claim 3, characterized in that: The first supporting rib (210), the second supporting rib (220) and the heat insulation body (230) are an integrated structure.

5. The battery device (20) according to claim 3, characterized in that: The number of the first supporting ribs (210) is at least two, and the first supporting ribs (210) are distributed at intervals along the second direction.

6. The battery device (20) according to claim 5, characterized in that: In the first direction, the ratio of the width of each of the first supporting ribs (210) to the width of the thermal insulation component (200) is 0.2-0.

5.

7. The battery device (20) according to claim 3, characterized in that: Each of the first supporting ribs (210) is vertically arranged on at least one side of the accommodating groove (231) in the first direction.

8. The battery device (20) according to claim 7, characterized in that: Each of the first supporting ribs (210) is constructed as a linear structure.

9. The battery device (20) according to claim 3, characterized in that: The number of the second support ribs (220) is at least two, and the second support ribs (220) are distributed at intervals along the second direction.

10. The battery device (20) according to claim 9, characterized in that: In the first direction, the ratio of the width of each of the second supporting ribs (220) to the width of the thermal insulation component (200) is 0.4-0.

5.

11. The battery device (20) according to claim 9, characterized in that: Each second supporting rib (220) is arranged on at least one side of the accommodating groove (231) in the first direction, and each second supporting rib (220) is arranged to be inclined in a direction away from or close to the first supporting rib (210).

12. The battery device (20) according to claim 11, characterized in that Each of the second supporting ribs (220) is constructed as an arc-shaped structure.

13. The battery device (20) according to claim 12, characterized in that: In each of the second support ribs (220) on the same side of the heat insulation body (230), one end of each of the second support ribs (220) away from the heat insulation body (230) jointly forms a contour line in the form of an inwardly concave arc.

14. The battery device (20) according to claim 3, characterized in that: The buffer portion (240) is filled in a gap between the first supporting rib (210), the second supporting rib (220) and the heat insulation body (230).

15. The battery device (20) according to claim 14, characterized in that The buffer portion (240) is constructed of a material having a thermal conductivity less than or equal to 0.1 W / m·K.

16. The battery device (20) according to claim 15, characterized in that The buffer portion (240) is constructed as a foam material structure.

17. The battery device (20) according to claim 3, characterized in that The first supporting rib (210), the second supporting rib (220) and the heat insulating body (230) are constructed as a plastic structure.

18. The battery device (20) according to claim 3, characterized in that The center of the middle area (201) is arranged to coincide with the center of the thermal insulation element (200); and in the second direction, the ratio of the size of the middle area (201) to the size of the thermal insulation element (200) is 20% to 30%.

19. The battery device (20) according to claim 1, characterized in that The bending modulus of the second supporting rib (220) is smaller than the bending modulus of the first supporting rib (210).

20. The battery device (20) according to claim 19, characterized in that The bending modulus of the first supporting rib (210) is 400 MPa-2500 MPa.

21. The battery device (20) according to claim 19, characterized in that The bending modulus of the second supporting rib (220) is 300 MPa-2000 MPa.

22. The battery device (20) according to claim 1, characterized in that The battery device (20) further comprises a box beam, wherein the heat insulating member (200) is arranged between the box beam and the battery cell (100).

23. An electrical equipment, characterized in that: Comprising the battery device (20) according to any one of claims 1 to 22.

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