Battery device and electric device

Abstract

The application discloses a battery device and a power utilization device. The battery device comprises a battery cabin and an electrical cabin. The battery cabin contains battery monomers. The electrical cabin has a first shell containing electrical components. The battery monomers are electrically connected to the electrical components, and a buffer gel is arranged between the electrical components and the first shell. The space in the electrical cabin comprises multiple filling areas filled with the buffer gel. The buffer gel filled in the multiple filling areas has different gel properties, so that the stress transmitted to the electrical components is attenuated, and the possibility of damage to the electrical components is reduced. Therefore, the reliability of the battery device can be improved.

Description

Technical Field

[0001] This application relates to the field of batteries, and more specifically, to a battery device and an electrical device. Background Technology

[0002] Battery devices typically have an electrical compartment to house electrical components that affect the overall performance of the battery device. However, during use, the electrical compartment may be subjected to vibration, shock, or even collisions, which can damage the electrical components and consequently reduce the reliability of the battery device.

[0003] Therefore, improving the reliability of battery devices has become an urgent problem to be solved. Utility Model Content

[0004] This application provides a battery device and an electrical device that can improve the reliability of the battery device.

[0005] In a first aspect, a battery device is provided, comprising a battery compartment and an electrical compartment. The battery compartment houses individual battery cells. The electrical compartment has a first housing containing electrical components. The individual battery cells are electrically connected to the electrical components, and a buffer gel is disposed between the electrical components and the first housing. The space within the electrical compartment includes multiple filling regions, each filled with a buffer gel of different properties.

[0006] In the technical solution provided in this application embodiment, the battery device is provided with a battery compartment and an electrical compartment. The battery cells and electrical components in the electrical compartment are electrically connected. A buffer gel is provided between the electrical components and the first shell of the electrical compartment. When the battery device is subjected to vibration, impact or even collision, the buffer gel can buffer the stress, thereby attenuating the stress transmitted to the electrical components and reducing the possibility of damage to the electrical components. Furthermore, by dividing the space of the electrical compartment into multiple filling areas and filling the multiple filling areas with different types of buffer gel, the electrical components can be set in different filling areas as needed, thereby setting different working environments for different types of electrical components, thereby improving the reliability of the electrical components, and thus improving the reliability of the battery device.

[0007] In some embodiments, the electrical compartment further includes: a second housing disposed between the first housing and the electrical components; wherein a first gap exists between the second housing and the first housing, and a cushioning colloid fills the first gap.

[0008] In the technical solution provided in this application embodiment, there is a first gap between the second shell and the first shell of the electrical compartment. The buffer colloid fills the first gap, which on the one hand can block the penetration of air, moisture and dust, and on the other hand can reduce vibration energy with less buffer colloid, thereby improving the reliability of the battery device.

[0009] In some embodiments, the main material of the buffer colloid is selected from the following materials: epoxy resin, silicone or polyurethane.

[0010] In some embodiments, the electrical compartment further includes a partition that divides the space within the electrical compartment into multiple filled areas.

[0011] In the technical solution provided in this application embodiment, the space inside the electrical compartment is divided into multiple filling areas by a partition. On the one hand, when different types of colloids are injected, the possibility of mixing of different types of colloids can be reduced. On the other hand, the partition can provide a certain support for the interior of the electrical compartment, thereby improving the structural strength of the electrical compartment and thus improving the reliability of the battery device.

[0012] In some embodiments, the buffer colloid includes a conductive colloid, and the plurality of filling regions include: a first filling region, the first filling region being filled with conductive colloid.

[0013] In the technical solution provided in this application embodiment, the first filling area is filled with the conductive colloid. When electrical components such as chips that are susceptible to interference are placed in the first filling area, the conductive colloid can play an electromagnetic shielding role, which can reduce the influence of the magnetic field generated by other high-current components in the electrical compartment and battery device on the function of the electrical components, thereby improving the reliability of the battery device.

[0014] In some embodiments, the filler in the conductive colloid is a conductive metal, graphite, or metal oxide.

[0015] In some embodiments, the electrical compartment further includes a control component, which includes a chip and / or a drive circuit board; wherein the control component is disposed within the first filling area.

[0016] In the technical solution provided in this application embodiment, the control component is disposed in the first filling area. The conductive colloid filled in the first filling area can provide electromagnetic shielding for the control component, thereby reducing the influence of the magnetic field generated by other high-current components in the electrical compartment and battery device on the function of the electrical components, thereby improving the reliability of the battery device.

[0017] In some embodiments, the control component includes a BMS.

[0018] In some embodiments, the buffer colloid includes a thermally conductive colloid, and the plurality of filling regions include: a second filling region, the second filling region being filled with the thermally conductive colloid.

[0019] In the technical solution provided in this application embodiment, the second filling area is filled with thermally conductive colloid. When electrical components with large heat generation are set in the second filling area, the thermally conductive colloid can quickly transfer heat to the outside of the electrical compartment, thereby reducing the possibility of damage to the electrical components due to overheating, and thus improving the reliability of the battery device.

[0020] In some embodiments, the filler of the thermally conductive colloid is aluminum nitride, silicon nitride, aluminum oxide, or graphene.

[0021] In some embodiments, the electrical compartment further includes a power assembly, which includes a power switch, a copper busbar, a fuse, or a contactor; wherein the power assembly is disposed in the second filling area.

[0022] In the technical solution provided in this application embodiment, the power component is disposed in the second filling area. The thermally conductive colloid filled in the second filling area can quickly conduct the heat generated by the power component to the outside of the electrical compartment, thereby reducing the temperature of the electrical components during operation. This reduces the possibility of the power component being damaged due to overheating, thereby improving the reliability of the battery device.

[0023] In some embodiments, the power components are CCU and / or BDU.

[0024] In some embodiments, the plurality of filling regions include: a third filling region, the third filling region being filled with a thermally and electrically conductive colloid.

[0025] In the technical solution provided in this application embodiment, the third filling area is filled with thermally conductive colloid. When electrical components carrying large currents are installed in the third filling area, on the one hand, the thermally conductive and conductive colloid can transfer heat to the outside of the electrical compartment, thereby reducing the possibility of damage to the electrical components due to overheating. On the other hand, the thermally conductive and conductive colloid can also serve as electromagnetic shielding, reducing the impact of large currents on surrounding electrical components, thereby improving the reliability of the battery device.

[0026] In some embodiments, the filler of the thermally and electrically conductive colloid is a conductive metal, a transition metal nitride, a transition metal carbide, or boron nitride.

[0027] In some embodiments, the electrical compartment further includes a transformer and an inductor, wherein the transformer and inductor are disposed in the third filling area.

[0028] In the technical solution provided in this application embodiment, transformers, inductors, etc. are disposed in the third filling area. The heat generated by the core loss and coil loss of the transformers, inductors, etc. can be transferred to the outside of the electrical compartment by the thermally conductive and conductive colloid. Furthermore, the magnetic field generated by the current of the transformers, inductors, etc. can be shielded by the thermally conductive and conductive colloid, which can reduce electromagnetic interference to other electrical components, thereby improving the reliability of the battery device.

[0029] In a second aspect, an electrical device is provided, comprising: a battery device as described in any of the first aspects, wherein the battery device is used to provide electrical energy. In some embodiments, the electrical device is a vehicle, a ship, or a spacecraft. Attached Figure Description

[0030] Figure 1 A schematic diagram of an electrical device according to one embodiment of this application is shown;

[0031] Figure 2 A partial structural schematic diagram of the battery device according to an embodiment of this application is shown;

[0032] Figure 3 A perspective view of a battery device provided in a certain embodiment of this application is shown;

[0033] Figure 4 A top view of the electrical compartment in a battery device according to a certain embodiment of this application is shown;

[0034] Figure 5 A perspective view of another possible electrical compartment in a battery device provided in one embodiment of this application is shown;

[0035] Figure 6 This invention provides a top view of the electrical compartment in a battery device according to one embodiment of the present application.

[0036] Figure 7 This application shows a top view schematic diagram of another form of the electrical compartment in a battery device provided in one embodiment of the present application;

[0037] Figure 8 This invention provides a top view schematic diagram of another form of the electrical compartment in a battery device according to a certain embodiment of the present application;

[0038] Figure 9 An exploded schematic diagram of the electrical compartment in a battery device provided in one embodiment of this application is shown.

[0039] The accompanying drawings are not drawn to scale.

[0040] Figure label:

[0041] 1-Vehicle; 30-Controller; 40-Motor; 10-Battery unit; 11-Housing; 111-First housing section; 112-Second housing section; 110-Battery compartment; 120-Electrical compartment; 130-Beam; 20-Battery cell; 121-First housing; 122-Electrical components; 123-Second housing; 124-First gap; 210-First filling area; 211-Control assembly; 220-Second filling area; 221-Power assembly; 230-Third filling area; 231-Transformer; 125-Cover plate; 126-Cooling component. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0044] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0045] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0046] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0047] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0048] In this application, "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0049] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0050] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0051] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0052] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0053] The battery device mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connections via a busbar.

[0054] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0055] As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form an independent module. As another example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0056] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cell assemblies housed within the housing.

[0057] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the housing by fixing the battery module in the housing.

[0058] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0059] As an example, the enclosure may include a first enclosure and a second enclosure. The first enclosure and the second enclosure are fastened together to form a closed space inside the enclosure to house the individual battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first enclosure may be a top cover or a bottom plate.

[0060] As an example, the enclosure may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are connected to the frame, creating an enclosed space inside the enclosure to house the individual battery cells.

[0061] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0062] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use individual battery cells, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships, and spacecraft. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft.

[0063] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0064] Battery devices typically have an electrical compartment to house electrical components that affect the overall performance of the battery device. However, during use, the electrical compartment may be subjected to vibration, shock, or even collisions, which can damage the electrical components and consequently reduce the reliability of the battery device.

[0065] Therefore, improving the reliability of battery devices has become an urgent problem to be solved.

[0066] This application provides a battery device including a battery compartment and an electrical compartment. The battery compartment houses individual battery cells. The electrical compartment has a first housing that contains electrical components. The individual battery cells are electrically connected to the electrical components, and a cushioning gel is disposed between the electrical components and the first housing.

[0067] In the technical solution provided in this application embodiment, the battery device is provided with a battery compartment and an electrical compartment. The battery cells in the electrical compartment and the electrical components are electrically connected. A buffer gel is provided between the electrical components and the first shell of the electrical compartment. When the battery device is subjected to vibration, impact or even collision, the buffer gel can buffer the stress, thereby attenuating the stress transmitted to the electrical components and reducing the possibility of damage to the electrical components. Thus, the reliability of the battery device can be improved.

[0068] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use battery devices.

[0069] Electrical equipment can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. This application does not impose any special limitations on the above-mentioned electrical equipment.

[0070] For ease of explanation, the following embodiments use a vehicle as an example of electrical equipment.

[0071] Figure 1 A schematic diagram of an electrical device according to one embodiment of this application is shown.

[0072] For example, such as Figure 1The diagram shown is a structural schematic of a vehicle 1 according to one embodiment of this application. Vehicle 1 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A motor 40, a controller 30, and a battery device 10 can be installed inside vehicle 1. The controller 30 controls the battery device 10 to supply power to the motor 40. For example, the battery device 10 can be installed at the bottom, front, or rear of vehicle 1. The battery device 10 can be used to power vehicle 1. For example, the battery device 10 can serve as the operating power source for vehicle 1, for example, to meet the electrical system requirements of vehicle 1, such as for starting, navigation, and operation. In another embodiment of this application, the battery device 10 can not only serve as the operating power source for vehicle 1, but also as the driving power source for vehicle 1, replacing or partially replacing gasoline or natural gas to provide driving power for vehicle 1.

[0073] For example, Figure 2 A partial structural schematic diagram of the battery device 10 according to an embodiment of this application is shown. Figure 2 As shown, the battery device 10 of this application embodiment may include a plurality of battery cells 20 to meet different power usage requirements. The shape of the battery cell 20 in this application embodiment can be set according to actual application. For example, the battery cell 20 can be as follows: Figure 2 The prism shape shown, or it could be different. Figure 2 Other shapes are shown, but the embodiments of this application are not limited to these.

[0074] It should be understood that, such as Figure 2 As shown, the battery device 10 of this embodiment may further include a housing 11, which can be used to accommodate multiple battery cells 20. The housing 11 of this embodiment has a hollow interior, and the multiple battery cells 20 are accommodated within the housing 11. The housing 11 may include two parts, referred to herein as a first housing portion 111 and a second housing portion 112, which are fastened together. The shapes of the first housing portion 111 and the second housing portion 112 can be determined according to the shape of the components housed inside, for example, according to the shape of the combination of the multiple battery cells 20 housed inside. At least one of the first housing portion 111 and the second housing portion 112 has an opening. For example, as... Figure 2As shown, the first housing portion 111 and the second housing portion 112 can both be hollow cuboids with one open side each. The openings of the first housing portion 111 and the second housing portion 112 are opposite to each other, and the first housing portion 111 and the second housing portion 112 are interlocked to form a housing 11 with a closed chamber, which can be used to accommodate multiple battery cells 20. The multiple battery cells 20 are connected in parallel, series, or mixed and placed inside the housing 11 formed by the interlocking of the first housing portion 111 and the second housing portion 112.

[0075] For example, unlike Figure 2 As shown, either the first housing portion 111 or the second housing portion 112 may have only one hollow cuboid with an opening, while the other is plate-shaped to cover the opening. Taking the second housing portion 112 as a hollow cuboid with one opening and the first housing portion 111 as a plate-shaped example, then the first housing portion 111 covers the opening of the second housing portion 112 to form a housing 11 with a closed chamber, which can be used to accommodate multiple battery cells 20.

[0076] The following is combined with Figure 3 and Figure 4 This application describes a battery device 10 provided in one embodiment.

[0077] Figure 3 A perspective view of a battery device 10 according to a certain embodiment of this application is shown; Figure 4 A top view of the electrical compartment 120 in a battery device 10 provided in one embodiment of this application is shown.

[0078] This application provides a battery device 10, including a battery compartment 110 and an electrical compartment 120. The battery compartment 110 houses a single battery cell 20. The electrical compartment 120 has a first housing 121, which houses an electrical component 122. The single battery cell 20 is electrically connected to the electrical component 122, and a buffer gel is disposed between the electrical component 122 and the first housing 121.

[0079] The battery compartment 110 can be separated by the beam 130, but this application embodiment does not limit this.

[0080] The electrical compartment 120 can be installed on the top, side or other parts of the battery device 10. This application embodiment does not limit the installation location of the electrical compartment 120.

[0081] Electrical component 122 may be a copper busbar, circuit board, relay, switching element, or chip, etc., and the embodiments of this application are not limited thereto.

[0082] The battery cell 20 and the electrical component 122 can be electrically connected through copper busbars, circuit boards, wires, etc., but this application embodiment is not limited thereto.

[0083] Buffer colloids can be elastic elastomers, such as foam.

[0084] The buffer colloid provided between the electrical component 122 and the first housing 121 can be either filled with the entire first housing 121 or filled with a portion of the space within the first housing 121.

[0085] In the current battery device 10, the electrical compartment 120 is fixed to the battery device 10 with bolts to improve the local rigidity of the electrical compartment 120. However, with the bolts fixed, the energy of vibration and impact is transmitted to the electrical compartment 120 without attenuation, causing damage to the electrical components 122. Even if rubber pads are added at the connection points of the electrical compartment 120, the vibration isolation bandwidth of the rubber pads is narrow, resulting in poor buffering effect for low-frequency vibrations. Furthermore, rubber is prone to aging, leading to decreased reliability over long-term use.

[0086] In this embodiment, a buffer colloid is provided between the first housing 121 and the electrical component 122. When the battery device 10 is subjected to vibration, impact or collision, the buffer colloid can absorb the energy of the vibration, thereby reducing the impact of vibration, impact or collision on the electrical component 122.

[0087] In the technical solution provided in this application embodiment, the battery device 10 is provided with a battery compartment 110 and an electrical compartment 120. The battery cells 20 in the electrical compartment 120 and the electrical components 122 are electrically connected. A buffer gel is provided between the electrical components 122 and the first housing 121 of the electrical compartment 120. When the battery device 10 is subjected to vibration, impact or even collision, the buffer gel can buffer the stress, thereby attenuating the stress transmitted to the electrical components 122 and reducing the possibility of damage to the electrical components 122. Thus, the reliability of the battery device 10 can be improved.

[0088] Figure 5 A perspective view of another possible electrical compartment 120 in a battery device 10 provided in one embodiment of this application is shown.

[0089] In some embodiments, the electrical compartment 120 further includes a second housing 123 disposed between the first housing 121 and the electrical component 122; wherein a first gap 124 is formed between the second housing 123 and the first housing 121, and the buffer colloid fills the first gap 124.

[0090] The second housing 123 of the electrical compartment 120 can be disposed between the side wall of the electrical compartment 120 and the electrical component 122, or the second housing 123 of the electrical compartment 120 can be disposed between the bottom wall of the electrical compartment 120 and the electrical component 122. This application embodiment does not limit this.

[0091] In the event of vibration, impact or collision, the first shell 121 of the electrical compartment 120 is affected first. Filling the gap between the first shell 121 and the second shell 123 with buffer colloid can reduce the amount of buffer colloid filled.

[0092] In the technical solution provided in this application embodiment, there is a first gap 124 between the second shell 123 and the first shell 121 of the electrical compartment 120. The first gap 124 is filled with buffer colloid. On the one hand, it can block the penetration of air, moisture and dust. On the other hand, it can reduce vibration energy with less buffer colloid, thereby improving the reliability of the battery device 10.

[0093] In some embodiments, the main material of the buffer colloid is selected from the following materials: epoxy resin, silicone or polyurethane.

[0094] Polyurethane colloids can effectively absorb mechanical vibration and impact energy, possess excellent flexibility and dynamic mechanical properties, and have good compatibility with substrates with different coefficients of thermal expansion, reducing stress cracking caused by temperature changes.

[0095] Silicone has good temperature resistance, does not easily age or harden with long-term use, and has electrical insulation properties.

[0096] Epoxy resin adhesive layers have stable dimensions, low internal stress, and good bonding strength.

[0097] The following is combined with Figures 6 to 9 This application describes the electrical compartment 120 in a battery device 10 provided in a certain embodiment.

[0098] Figure 6 This paper shows a top view of the electrical compartment 120 in a battery device 10 according to a certain embodiment of the present application; Figure 7 This paper shows a top view of another form of the electrical compartment 120 in a battery device 10 provided in one embodiment of the present application; Figure 8 This paper shows a top view of another form of the electrical compartment 120 in a battery device 10 provided in a certain embodiment of the present application; Figure 9 An exploded view of the electrical compartment 120 in a battery device 10 provided in a certain embodiment of this application is shown.

[0099] In some embodiments, the space within the electrical compartment 120 includes a plurality of filling areas, each of which is filled with a buffer colloid.

[0100] Multiple filling regions can be regions separated by partitions, or they can be regions directly filled with colloid without any separating structure. The embodiments of this application are not limited to these.

[0101] Buffer colloids can be filled with different substances, such as metals, graphite, oxides, etc.

[0102] The electrical compartment 120 is divided into multiple filling areas, each filled with a buffer colloid. This results in different colloid properties in the multiple filling areas. Electrical components 122 can be placed in different filling areas according to the properties of the different filling areas, thereby providing better protection for the electrical components 122.

[0103] In the technical solution provided in this application embodiment, by dividing the space of the electrical compartment 120 into multiple filling areas and filling the multiple filling areas with different types of buffer colloids, the electrical components 122 can be set in different filling areas as needed, thereby enabling different working environments to be set for different types of electrical components 122, thereby improving the reliability of the electrical components 122, and thus improving the reliability of the battery device 10.

[0104] In some embodiments, the electrical compartment 120 further includes a partition that divides the space within the electrical compartment 120 into the plurality of filling areas.

[0105] In the technical solution provided in this application embodiment, the space inside the electrical compartment 120 is divided into multiple filling areas by a partition. On the one hand, when injecting different types of colloids, the possibility of mixing of different types of colloids can be reduced. On the other hand, the partition can provide a certain support for the interior of the electrical compartment 120, thereby improving the structural strength of the electrical compartment 120 and thus improving the reliability of the battery device 10.

[0106] In some embodiments, the buffer colloid includes a conductive colloid, and the plurality of filling regions include a first filling region 210, which is filled with the conductive colloid.

[0107] The conductive colloid may be made of epoxy resin, silicone or polyurethane as the main material, and the filler of the conductive colloid may be a colloid of conductive metal, graphite or metal oxide.

[0108] The conductive metal can be copper, silver, iron, nickel, etc., and the embodiments of this application are not limited thereto.

[0109] Graphite can be carbon-based materials such as conductive carbon black and graphene.

[0110] Metal oxides can be conductive oxides such as layered metal oxides.

[0111] The fillers for conductive colloids can also be poly(3,4-ethylenedioxythiophene) and polystyrene sulfonate, etc., but the embodiments in this application are not limited thereto.

[0112] The conductive colloid is filled in the first filling area 210. When a large current is present in the outside and an induced magnetic field is generated, the filler in the conductive colloid will generate an induced current, thereby consuming the magnetic field energy, thus playing an electromagnetic shielding role, and thus protecting the electrical components 122 in the first filling area 210 from interference from the external magnetic field.

[0113] In the technical solution provided in this application embodiment, the first filling area 210 is filled with the conductive colloid. When the electrical components 122 that are susceptible to interference, such as chips, are set in the first filling area 210, the conductive colloid can play the role of electromagnetic shielding, which can reduce the influence of the magnetic field generated by the electrical compartment 120 and other high-current components in the battery device 10 on the function of the electrical components 122, thereby improving the reliability of the battery device 10.

[0114] In some embodiments, the electrical compartment 120 further includes a control component 211, which includes a chip and / or a drive circuit board; wherein the control component 211 is disposed within the first filling area 210.

[0115] The control component 211 includes a chip to process the information collected from the battery device 10. It is sensitive to current, and the presence of high-current devices in the vicinity may affect the function of the control component 211.

[0116] The control component 211 may be a battery management system (BMS), and the control component 211 may also include other components, which are not limited to this embodiment.

[0117] Figures 7 to 9 Taking the BMS, CCU, and BDU as an example, the electrical compartment 120 may include more or fewer components, and this application embodiment is not limited thereto.

[0118] The space ratio and position of each component can be set according to requirements, for example... Figure 7 and Figure 8 The positions and sizes of different components can vary.

[0119] The control component 211 is disposed within the first filling region 210. The first filling region 210 is filled with conductive colloid, thereby achieving electromagnetic shielding of the first filling region 210 and providing a better working environment for the control component 211.

[0120] The first filling area 210 can also be equipped with a current sensor, etc., but this application embodiment does not limit this.

[0121] In the technical solution provided in this application embodiment, the control component 211 is disposed in the first filling area 210. The conductive colloid filled in the first filling area 210 can provide electromagnetic shielding for the control component 211, thereby reducing the influence of the magnetic field generated by other high-current components in the electrical compartment 120 and battery device 10 on the function of the electrical component 122, thereby improving the reliability of the battery device 10.

[0122] In some embodiments, the buffer colloid includes a thermally conductive colloid, and the plurality of filling regions include a second filling region 220, which is filled with the thermally conductive colloid.

[0123] The main material of the thermally conductive colloid can be epoxy resin, silicone or polyurethane, and the filler of the thermally conductive colloid can be aluminum nitride, silicon nitride, aluminum oxide or graphene or other substances with good thermal conductivity.

[0124] Thermally conductive colloid is filled in the second filling area 220. The heat generated by the electrical components 122 installed in the second filling area 220 can be quickly transferred to the outside of the electrical compartment 120, thereby reducing the possibility of damage to the electrical components 122 due to overheating.

[0125] In the technical solution provided in this application embodiment, the second filling region 220 is filled with thermally conductive colloid. When an electrical component 122 with a large heat generation is set in the second filling region 220, the thermally conductive colloid can quickly transfer heat to the outside of the electrical compartment 120, thereby reducing the possibility of damage to the electrical component 122 due to overheating, thereby improving the reliability of the battery device 10.

[0126] In some embodiments, the electrical compartment 120 further includes a power assembly 221, which includes a power switch, a copper busbar, a fuse, or a contactor; wherein the power assembly 221 is disposed in the second filling area 220.

[0127] The power switch can be a relay, transistor, field-effect transistor, etc., and this application does not limit it.

[0128] Power switches perform high-frequency switching on and off actions during operation, generating a large amount of heat and requiring high heat dissipation.

[0129] The power component 221 may be a charging control unit (CCU), a battery distribution unit (BDU), or a high-voltage box. This application embodiment does not limit this.

[0130] The CCU contains a DC-DC converter module, and the BDU contains fuses and contactors, which may generate a lot of heat and require high heat dissipation.

[0131] The power component 221 is disposed within the second filling region 220, and the heat dissipation of the power component 221 is regulated by the thermally conductive colloid, so that the power component 221 can perform better.

[0132] In the technical solution provided in this application embodiment, the power component 221 is disposed in the second filling region 220. The thermally conductive colloid filled in the second filling region 220 can quickly conduct the heat generated by the power component 221 to the outside of the electrical compartment 120, thereby reducing the temperature of the electrical component 122 during operation. This reduces the possibility of the power component 221 being damaged due to overheating, thereby improving the reliability of the battery device 10.

[0133] In some embodiments, the plurality of filling regions include a third filling region 230, which is filled with a thermally and electrically conductive colloid.

[0134] The main material of the thermally conductive and conductive colloid can be epoxy resin, silicone or polyurethane, and the filler of the thermally conductive and insulating colloid can be conductive metal, transition metal nitride, transition metal carbide or boron nitride or other substances with certain electrical and thermal conductivity.

[0135] Thermally and electrically conductive colloid is disposed in the third filling region 230. The electrical component 122 located in the third filling region 230 can dissipate heat even when a large current is applied, and the magnetic field generated by the large current can also reduce the influence of the surrounding electrical component 122.

[0136] In the technical solution provided in this application embodiment, the third filling region 230 is filled with thermally conductive colloid. When an electrical component 122 carrying a large current is installed in the third filling region 230, on the one hand, the thermally conductive and conductive colloid can transfer heat to the outside of the electrical compartment 120, thereby reducing the possibility of the electrical component 122 being damaged due to overheating. On the other hand, the thermally conductive and conductive colloid can also serve as electromagnetic shielding, reducing the impact of the large current on the surrounding electrical component 122, thereby improving the reliability of the battery device 10.

[0137] In some embodiments, the electrical compartment 120 further includes a transformer 231 or an inductor, wherein the transformer 231 or the inductor is disposed in the third filling region 230.

[0138] Figure 9 Transformer 231 is used as an example of electrical component 122, but other electrical components 122 can be used here.

[0139] Transformers 231 and inductors often carry large currents, and core losses and coil losses generate a lot of heat. They are also potential sources of electromagnetic interference. Placing transformers 231 and inductors in the third filling area 230 can both dissipate heat from transformers 231 and inductors and provide electromagnetic shielding for transformers 231 and inductors.

[0140] In the technical solution provided in this application embodiment, the transformer 231, inductor, etc. are disposed in the third filling area 230. The heat generated by the core loss and coil loss of the transformer 231, inductor, etc. can be transferred to the outside of the electrical compartment 120 by the thermally conductive and conductive colloid. Furthermore, the magnetic field generated by the current of the transformer 231, inductor, etc. can be shielded by the thermally conductive and conductive colloid, which can reduce electromagnetic interference to other electrical components 122, thereby improving the reliability of the battery device 10.

[0141] The electrical compartment 120 may also be provided with a cover plate 125 to enclose the electrical compartment 120.

[0142] The electrical compartment 120 can also be equipped with a cooling component 126 to remove the heat absorbed by the thermally conductive colloid, thereby further improving the working efficiency of the electrical components 122.

[0143] According to some embodiments of this application, this application also provides an electrical device including the battery device 10 described in any of the above embodiments, and the battery device 10 is used to provide electrical energy to the electrical device.

[0144] The power supply device can be any of the aforementioned devices or systems that utilize battery device 10.

[0145] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized by, include: Battery compartment (110) contains battery cells (20). The electrical compartment (120) has a first shell (121) which houses electrical components (122). Wherein, the battery cell (20) is electrically connected to the electrical component (122), and A buffer colloid is provided between the electrical component (122) and the first housing (121). The space inside the electrical compartment (120) includes multiple filling areas, each of which is filled with the buffer colloid. The properties of the buffer colloids filled in the multiple filling areas are different.

2. The battery device according to claim 1, characterized by The electrical compartment (120) also includes: A second housing (123) is disposed between the first housing (121) and the electrical component (122); The second housing (123) and the first housing (121) have a first gap (124), and the buffer colloid fills the first gap (124).

3. The battery device according to claim 1, characterized in that, The main material of the buffer colloid is selected from the following materials: Epoxy resin, silicone or polyurethane.

4. The battery device according to claim 1, characterized in that, The electrical compartment (120) also includes: A partition that divides the space within the electrical compartment (120) into the plurality of filling areas.

5. The battery device according to claim 1, characterized in that, The buffer colloid includes a conductive colloid, and the plurality of filling regions include: The first filling region (210) is filled with the conductive colloid.

6. The battery device according to claim 5, characterized in that, The filler in the conductive colloid is a conductive metal, graphite, or metal oxide.

7. The battery device according to claim 5, characterized in that, The electrical compartment (120) also includes: A control component (211) includes a chip and / or a drive circuit board; The control component (211) is located within the first filling area (210).

8. The battery device according to claim 7, characterized in that, The control component (211) includes a battery management system.

9. The battery device according to claim 1, characterized in that, The buffer colloid includes a thermally conductive colloid, and the plurality of filling regions include: The second filling region (220) is filled with the thermally conductive colloid.

10. The battery device according to claim 9, characterized in that, The filler in the thermally conductive colloid is aluminum nitride, silicon nitride, aluminum oxide, or graphene.

11. The battery device according to claim 9, characterized in that, The electrical compartment (120) also includes: A power component (221) comprising a power switch, a copper busbar, a fuse, or a contactor; The power component (221) is disposed in the second filling region (220).

12. The battery device according to claim 11, characterized in that, The power component (221) is a charging control unit and / or a battery power distribution unit.

13. The battery device according to any one of claims 1 to 12, characterized in that, The plurality of filled regions include: The third filling region (230) is filled with thermally and electrically conductive colloid.

14. The battery device according to claim 13, characterized in that, The filler in the thermally and electrically conductive colloid is a conductive metal, a transition metal nitride, a transition metal carbide, or boron nitride.

15. The battery device according to claim 13, characterized in that, The electrical compartment (120) also includes: Transformer (231) or inductor, The transformer (231) or the inductor is disposed in the third filling region (230).

16. An electrical appliance, characterized in that, include: The battery device according to any one of claims 1 to 15, wherein the battery device is used to provide electrical energy.

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