Electric device

Abstract

The utility model provides a power utilization device, and belongs to the field of electric equipment. The power utilization device comprises an executing mechanism, a driving module, a battery device and a boosting module. And the driving module is connected with the executing mechanism and is configured to drive the executing mechanism to move. The boosting module is provided with a voltage input end and a voltage output end, the voltage input end is electrically connected with the battery device, the voltage output end is electrically connected with the driving module, and the voltage of the voltage output end is larger than that of the output end of the battery device. Through the boost module, the voltage output by the battery device to the driving module can be increased, so that the current of a system circuit of the battery device can be reduced under the same power while the power utilization requirement of the driving module is met, and heat energy generated by the system circuit of the battery device in the use process can be effectively reduced; therefore, the energy loss of the battery device in the use process is reduced, and the cruising ability of the power utilization device is improved.

Description

Technical Field

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

[0002] In recent years, the new energy field has experienced rapid development. In electric or intelligent devices, batteries play an irreplaceable and crucial role as the power source. With the vigorous promotion of electric devices, the demand for battery products is also increasing, especially in the robotics field, where batteries are often used as the primary energy source to improve the flexibility and convenience of robots. However, existing electrical devices are prone to significant internal energy loss during use, particularly robots, resulting in poor battery life. Utility Model Content

[0003] This application provides an electrical device that can effectively extend the battery life of the electrical device.

[0004] In a first aspect, embodiments of this application provide an electrical device, including an actuator, a drive module, a battery device, and a boost module; the drive module is connected to the actuator and configured to drive the actuator to move; the boost module has a voltage input terminal and a voltage output terminal, the voltage input terminal is electrically connected to the battery device, the voltage output terminal is electrically connected to the drive module, and the voltage at the voltage output terminal is greater than the voltage at the output terminal of the battery device.

[0005] In the above technical solution, the voltage input terminal and voltage output terminal of the boost module are electrically connected to the battery device and the drive module, respectively. The voltage of the voltage output terminal of the boost module is greater than the voltage of the output terminal of the battery device. This allows the battery device to be electrically connected to the drive module through the boost module. The boost module can increase the voltage output from the battery device to the drive module, thereby meeting the power requirements of the drive module while reducing the current in the battery device's system circuit at the same power. This effectively reduces the heat generated by the battery device's system circuit during use, thereby reducing energy loss during battery use and improving the battery's endurance.

[0006] In some embodiments, the battery device includes at least one battery cell, each of which has a capacity of 16% to 100% of the total capacity of the battery device.

[0007] In the above technical solution, by setting the capacity of each battery cell to account for 16%-100% of the total capacity of the battery device, the number of battery cells in the battery device is reduced. This reduces the space wastage between battery cells and the overall space occupied by the wall thickness of all battery cells, which is beneficial to improving the space utilization of the battery device and thus increasing the energy density of the battery device. Since the number of battery cells in the battery device is reduced, the output voltage of the battery device will be reduced. Therefore, by setting a boost module between the battery device and the drive module, the voltage output from the battery device to the drive module can be increased. This can improve the energy density of the battery device while reducing the energy loss of the device, which is beneficial to further improving the range of the device.

[0008] In some embodiments, the number of battery cells is n, satisfying 2≤n≤6.

[0009] In the above technical solution, on the one hand, setting the number of battery cells in the battery device to be greater than or equal to 2 can alleviate the problem of excessive capacity required by a single battery cell and help reduce the manufacturing difficulty of the battery cell. On the other hand, setting the number of battery cells in the battery device to be less than or equal to 6 can further reduce the space waste between battery cells and further reduce the overall space occupied by the wall thickness of all battery cell casings, which can further improve the space utilization of the battery device and further improve the energy density of the battery device.

[0010] In some embodiments, the capacity of the battery cell is 50Ah-300Ah.

[0011] In the above technical solution, on the one hand, the capacity of the battery cell is set to be greater than or equal to 50Ah to realize the structure of the battery cell as a large capacitor, which is conducive to further improving the range of a single battery cell. On the other hand, setting the capacity of the battery cell to be less than or equal to 300Ah can alleviate the phenomenon that the manufacturing difficulty of the battery cell is too high due to the excessive capacity of the battery cell, and can reduce the manufacturing cost of the battery cell.

[0012] In some embodiments, the battery device has a capacity of 0.3 kW·h to 4 kW·h.

[0013] In the above technical solution, on the one hand, the battery capacity is set to be greater than or equal to 0.3 kWh to realize the battery device as a large capacitor structure, which is conducive to further improving the battery life of the device. On the other hand, setting the battery capacity to be less than or equal to 4 kWh can alleviate the phenomenon that the battery device is too large due to the excessive battery capacity, thereby reducing the space occupied by the battery device on the device and reducing the difficulty of installing the battery device on the device.

[0014] In some embodiments, the battery device includes a plurality of battery cells connected in series.

[0015] In the above technical solution, by setting the multiple battery cells of the battery device in a series connection, the output voltage of the battery device is a superposition of the output voltages of the multiple battery cells, which is beneficial to further improve the output voltage of the battery device, so that the boost module can boost the output voltage of the battery device.

[0016] In some embodiments, the battery device includes a housing and battery cells, the housing having an assembly space inside, and the battery cells being disposed within the assembly space.

[0017] In the above technical solution, the battery device includes a housing and battery cells. By assembling the battery cells into the assembly space of the housing, the housing can provide space to accommodate the battery cells, so that the housing can play a certain protective role for the battery cells, which helps to reduce damage to the battery cells during use. Moreover, when the battery device has multiple battery cells, it is convenient to assemble the multiple battery cells of the battery device onto the electrical device, which helps to reduce the assembly difficulty of the battery device.

[0018] In some embodiments, the boost module is disposed within the assembly space.

[0019] In the above technical solution, by setting the boost module as a structure assembled within the assembly space of the housing, the boost module and the battery device are integrated into one unit. This structure improves the overall integrity of the boost module and battery device, optimizing their layout within the electrical device and reducing assembly difficulty. Furthermore, it ensures that the voltage output from the electrical device's housing is the boosted voltage, further shortening the current transmission distance between the electrical device and the boost module, thereby reducing energy loss during transmission between the battery device and the boost module.

[0020] In some embodiments, the battery device includes a plurality of battery cells, which are stacked to form a battery cell assembly, and the battery cell assembly and the boost module are stacked together.

[0021] In the above technical solution, by setting the battery cell assembly formed by stacking the boost module and multiple battery cells as a stacked structure, the assembly compactness of the battery cells and boost module in the housing can be improved, and the space waste between the battery cells and boost module can be reduced, which is conducive to improving the space utilization rate inside the housing, thereby improving the energy density of the battery device.

[0022] In some embodiments, the battery cell assembly and the boost module are stacked along a first direction; wherein the size of the boost module in the first direction is smaller than the size of the boost module in the second and third directions, and the first direction, the second direction and the third direction are perpendicular to each other.

[0023] In the above technical solution, the battery cell assembly and the boost module are stacked along the first direction, and the size of the boost module in the first direction is smaller than the size of the boost module in the second and third directions. This makes the stacking direction of the battery cell assembly and the boost module the direction of minimum thickness of the boost module, thereby reducing the difficulty of stacking the boost module and the battery cell assembly and optimizing the spatial layout of the battery cell assembly and the boost module in the box, so as to reduce the overall space waste of the battery cell assembly and the boost module in the box.

[0024] In some embodiments, the size of the battery cell assembly in the second direction is smaller than the size of the battery cell assembly in the first direction and the third direction.

[0025] In the above technical solution, by setting the size of the battery cell assembly in the second direction to be smaller than the size of the battery cell assembly in the first and third directions, the stacking direction of the battery cell assembly and the boost module is not the minimum thickness direction of the battery cell assembly. This makes the minimum thickness direction of the boost module and the minimum thickness direction of the battery cell assembly perpendicular to each other. The power device with this structure can further optimize the spatial layout of the battery cell assembly and the boost module in the box, so as to further improve the overall space utilization rate of the battery cell assembly and the boost module in the box.

[0026] In some embodiments, the ratio of the total volume of all the battery cells to the volume of the assembly space is 70%-90%.

[0027] In the above technical solution, by setting the total volume of all battery cells in the battery device to occupy 70%-90% of the assembly space of the box, the proportion of space in the box used to accommodate battery cells is increased, which helps to improve the energy density of the battery device and further improve the range of the power device.

[0028] In some embodiments, the battery cell includes a housing and an electrode assembly disposed within the housing; wherein the housing is rectangular parallelepiped in shape.

[0029] In the above technical solution, by setting the outer shell of the battery cell to a cuboid structure, the battery cell is square. The battery cell with this structure can optimize the spatial layout of the battery cell in the assembly space of the box. Especially when multiple battery cells are set in the box, it can effectively reduce the space waste between battery cells, thereby improving the internal space utilization of the battery device and helping to improve the energy density of the battery device.

[0030] In some embodiments, the housing includes a shell and an end cap, the shell having an opening and the end cap closing the opening; wherein the wall thickness of the shell is 0.25mm-1.8mm.

[0031] In the above technical solution, on the one hand, setting the wall thickness of the shell to be greater than or equal to 0.25mm can improve the structural strength of the shell and reduce the risk of deformation or cracking during use. On the other hand, setting the wall thickness of the shell to be less than or equal to 1.8mm can reduce the space occupied by the shell of a single battery cell in the assembly space of the box, which is conducive to further improving the space utilization rate inside the box and thus improving the energy density of the battery device.

[0032] In some embodiments, the battery cell includes an electrode assembly, the electrode assembly includes a positive electrode sheet and a negative electrode sheet, the positive electrode sheet includes a positive active material layer, and the negative electrode sheet includes a negative active material layer; wherein, the weight percentage of nickel in the positive active material layer is 70%-98%, and the weight percentage of silicon in the negative active material layer is 5%-100%.

[0033] In the above technical solution, by making the weight ratio of nickel in the positive electrode active material layer 70%-98% and the weight ratio of silicon in the negative electrode active material layer 5%-100%, the active material of the electrode assembly of the battery cell is made of high silicon and high nickel material, thereby improving the energy density of the battery cell, which in turn improves the energy density of the battery device, and thus further improves the range of the power device under the same space requirements for assembling the battery device.

[0034] In some embodiments, the electrical device further includes a connecting wire that electrically connects the battery device and the boost module; wherein the length of the connecting wire is less than or equal to 100 mm.

[0035] In the above technical solution, by setting the length of the connecting wire between the battery device and the boost module to less than or equal to 100mm, the current transmission distance between the battery device and the boost module is reduced, thereby reducing the resistance on the current transmission path between the battery device and the boost module, reducing the loss of electrical energy during the transmission between the battery device and the boost module, and further reducing the energy loss of the power-consuming device, thereby further improving the endurance of the power-consuming device.

[0036] In some embodiments, the electrical device is a robot.

[0037] In the above technical solution, by setting the power-consuming device as the robot, the robot is structured so that the electric power of the battery device is the main energy source. The robot with this structure can achieve the robot's flexibility while improving the robot's endurance.

[0038] In some embodiments, the power-consuming device is a humanoid robot, the power-consuming device includes a torso and multiple limbs, all of which are connected to the torso; wherein, the limbs are the actuators, the drive module is disposed in the limbs, and the battery device is disposed in the torso.

[0039] In the above technical solution, the power supply device is a humanoid robot, and the limbs of the humanoid robot are the actuators. By setting the drive module in the limbs and the battery device in the torso, the spatial layout of the humanoid robot can be effectively optimized while the drive module can drive the movement of the corresponding limbs, and the space for loading the battery device in the humanoid robot can be expanded.

[0040] In some embodiments, the boost module is disposed on the torso portion.

[0041] In the above technical solution, by setting the boost module in the torso of the humanoid robot, on the one hand, it is convenient for the battery device to be electrically connected to the drive modules of multiple limb parts through the boost module, which helps to reduce the assembly difficulty between the boost module and the drive module. On the other hand, it can shorten the current transmission distance between the battery device and the boost module, thereby reducing the resistance on the current transmission path between the battery device and the boost module, so as to reduce the loss of electrical energy during the transmission between the battery device and the boost module, and further reduce the energy loss of the humanoid robot, thereby further improving the endurance of the humanoid robot. Attached Figure Description

[0042] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of the structure of an electrical device provided in some embodiments of this application;

[0044] Figure 2 Exploded views of the battery device structure of the power-consuming device provided in some embodiments of this application;

[0045] Figure 3 Exploded view of the battery device structure of an electrical device provided in some embodiments of this application;

[0046] Figure 4 A cross-sectional view of the battery device of an electrical device provided in some embodiments of this application;

[0047] Figure 5 Exploded views of the structure of a single battery cell provided in some embodiments of this application;

[0048] Figure 6 This is a partial cross-sectional view of the electrode assembly of a battery cell provided in some embodiments of this application.

[0049] Icons: 100 - Electrical device; 10 - Actuator; 20 - Battery assembly; 21 - Housing; 211 - First housing body; 212 - Second housing body; 213 - Assembly space; 22 - Battery cell; 221 - Housing; 2211 - Shell; 2211a - Opening; 2212 - End cap; 222 - Electrode assembly; 222a - Positive tab; 222b - Negative tab; 2221 - Positive electrode plate; 2221a - Positive electrode plate 2221b-Positive electrode active material layer; 2222-Negative electrode sheet; 2222a-Negative electrode current collector; 2222b-Negative electrode active material layer; 2223-Separator; 223-Electrode terminal; 224-Current collector component; 225-Pressure relief component; 22a-Battery cell assembly; 30-Boost module; 40-Torso part; 50-Limb part; X-First direction; Y-Second direction; Z-Third direction. Detailed Implementation

[0050] 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.

[0051] 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.

[0052] In this application, the reference to "embodiment" means that a particular 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 in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] In this application, "multiple" means two or more (including two).

[0057] 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.

[0058] 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.

[0059] A single battery cell typically includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of a single battery cell, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, helps prevent short circuits to some extent while allowing active ions to pass through.

[0060] In some embodiments, the positive electrode may be a positive electrode sheet, which may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0061] As an example, the positive current collector has two surfaces opposite each other in its own thickness direction, and the positive active material is disposed on either or both of the two opposite surfaces of the positive current collector.

[0062] As an example, the positive electrode current collector can be a metal foil or a composite current collector. For example, as a metal foil, it can be aluminum with a silver-plated surface, stainless steel with a silver-plated surface, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, or titanium, etc. Composite current collectors can include a polymer material base layer and a metal layer. Composite current collectors can be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0063] As an example, the positive electrode active material may include at least one of the following materials: lithium phosphate, lithium transition metal oxide, and their respective modified compounds. However, this application is not limited to these materials, and other conventional materials that can be used as battery positive electrode active materials may also be used. These positive electrode active materials may be used alone or in combination of two or more. Examples of lithium phosphate may include, but are not limited to, at least one of lithium iron phosphate (such as LiFePO4 (also referred to as LFP)), lithium iron phosphate and carbon composites, lithium manganese phosphate (such as LiMnPO4), lithium manganese phosphate and carbon composites, lithium iron manganese phosphate, and lithium iron manganese phosphate and carbon composites. Examples of lithium transition metal oxide may include, but are not limited to, lithium cobalt oxide (such as LiCoO2), lithium nickel oxide (such as LiNiO2), lithium manganese oxide (such as LiMnO2, LiMn2O4), lithium nickel cobalt oxide, lithium manganese cobalt oxide, lithium nickel manganese oxide, and lithium nickel cobalt manganese oxide (such as LiNi). 1 / 3 Co 1 / 3 Mn 1 / 3 O2 (also known as NCM) 333 LiNi 0.5 Co 0.2 Mn 0.3 O2 (also known as NCM) 523 LiNi 0.5 Co 0.25 Mn 0.25 O2 (also known as NCM) 211 LiNi 0.6 Co 0.2 Mn 0.2 O2 (also known as NCM) 622 LiNi 0.8 Co 0.1 Mn 0.1 O2 (also known as NCM) 811 )), lithium nickel cobalt aluminum oxide (such as LiNi) 0.85 Co 0.15 Al 0.05 At least one of O2 and its modified compounds.

[0064] In some embodiments, the positive electrode can be a foamed metal. The foamed metal can be foamed nickel, foamed copper, foamed aluminum, foamed alloys, etc. When foamed metal is used as the positive electrode, the surface of the foamed metal may or may not contain a positive electrode active material. As an example, lithium source material, potassium metal, or sodium metal can also be filled and / or deposited within the foamed metal, where the lithium source material is lithium metal and / or a lithium-rich material.

[0065] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0066] As an example, the negative electrode current collector can be a metal foil, a foamed metal, or a composite current collector. For example, as a metal foil, it can be silver-treated aluminum or stainless steel, stainless steel, copper, aluminum, nickel, carbon electrodes, or titanium, etc. Foamed metal can be foamed nickel, foamed copper, foamed aluminum, foamed alloys, etc. Composite current collectors can include a polymer material base layer and a metal layer. Composite current collectors can be formed by forming a metal material (copper, copper alloys, nickel, nickel alloys, titanium, titanium alloys, silver and silver alloys, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0067] As an example, the negative electrode sheet may include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.

[0068] As an example, the negative electrode current collector has two surfaces opposite each other in its own thickness direction, and the negative electrode active material is disposed on either or both of the two opposite surfaces of the negative electrode current collector.

[0069] As an example, the negative electrode active material may be a negative electrode active material known in the art for use in battery cells. As an example, the negative electrode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, and lithium titanate, etc. Silicon-based materials may be selected from at least one of elemental silicon, silicon oxide compounds, silicon-carbon composites, silicon-nitrogen composites, and silicon alloys. Tin-based materials may be selected from at least one of elemental tin, tin oxide compounds, and tin alloys. However, this application is not limited to these materials, and other conventional materials that can be used as battery negative electrode active materials may also be used. These negative electrode active materials may be used alone or in combination of two or more.

[0070] In some embodiments, the positive current collector can be made of aluminum, and the negative current collector can be made of copper.

[0071] In some embodiments, the electrode assembly further includes an isolator disposed between the positive and negative electrodes.

[0072] In some embodiments, the separator is a separator membrane. The separator membrane can be of various types, and any known porous separator membrane with good chemical and mechanical stability can be selected.

[0073] As an example, the material of the separator may include at least one of glass fiber, nonwoven fabric, polyethylene, polypropylene, and polyvinylidene fluoride. The separator may be a single-layer film or a multi-layer composite film. When the separator is a multi-layer composite film, the materials of each layer may be the same or different. The separator may be a separate component located between the positive and negative electrodes, or it may be attached to the surfaces of the positive and negative electrodes.

[0074] In some embodiments, the separator is a solid electrolyte. The solid electrolyte is disposed between the positive and negative electrodes, serving both to transport ions and to isolate the positive and negative electrodes.

[0075] In some embodiments, the battery cell also includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. The electrolyte can be liquid, gel-like, or solid. Liquid electrolytes include electrolyte salts and solvents.

[0076] In some embodiments, the electrolyte salt may include at least one of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium perchlorate, lithium hexafluoroarsenate, lithium bis(fluorosulfonyl)imide, lithium bis(trifluoromethanesulfonyl)imide, lithium trifluoromethanesulfonate, lithium difluorophosphate, lithium difluorooxalate borate, lithium dioxalate borate, lithium difluorodioxalate phosphate, and lithium tetrafluorooxalate phosphate.

[0077] In some embodiments, the solvent may include at least one selected from ethylene carbonate, propylene carbonate, methyl ethyl carbonate, diethyl carbonate, dimethyl carbonate, dipropyl carbonate, methyl propyl carbonate, ethyl propyl carbonate, butyl carbonate, fluoroethylene carbonate, methyl formate, methyl acetate, ethyl acetate, propyl acetate, methyl propionate, ethyl propionate, propyl propionate, methyl butyrate, ethyl butyrate, 1,4-butyrolactone, sulfolane, dimethyl sulfone, methyl ethyl sulfone, and diethyl sulfone. The solvent may also be an ether solvent. Ether solvents may include one or more selected from ethylene glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, 1,3-dioxolane, tetrahydrofuran, methyl tetrahydrofuran, diphenyl ether, and crown ethers.

[0078] Among them, the gel electrolyte includes a polymer as the electrolyte backbone network, combined with an ionic liquid - lithium salt.

[0079] Solid electrolytes include polymer solid electrolytes, inorganic solid electrolytes, and composite solid electrolytes.

[0080] As an example, polymer solid electrolytes can be polyether (polyoxyethylene), polysiloxane, polycarbonate, polyacrylonitrile, polyvinylidene fluoride, polymethyl methacrylate, monoionic polymers, polyionic liquids-lithium salts, cellulose, etc.

[0081] As an example, inorganic solid electrolytes may include one or more of the following: oxide solid electrolytes (crystalline perovskite, sodium superconducting ion conductor, garnet, amorphous LiPON thin film), sulfide solid electrolytes (crystalline lithium superconducting ion conductor (lithium germanium phosphate sulfide, silver sulfide germanium ore), amorphous sulfides), halide solid electrolytes, nitride solid electrolytes, and hydride solid electrolytes.

[0082] As an example, composite solid electrolytes are formed by adding inorganic solid electrolyte fillers to polymer solid electrolytes.

[0083] In some implementations, the electrode assembly has a wound structure. The positive and negative electrode sheets are wound into a wound structure.

[0084] In some implementations, the electrode assembly has a stacked structure.

[0085] As an example, multiple positive and negative electrodes can be set, and multiple positive and multiple negative electrodes can be stacked alternately.

[0086] As an example, multiple positive electrode plates can be provided, and negative electrode plates can be folded to form multiple stacked folded segments, with a positive electrode plate sandwiched between adjacent folded segments.

[0087] As an example, both the positive and negative electrode plates are folded to form multiple stacked folded segments.

[0088] As an example, multiple separators can be provided, each positioned between any adjacent positive or negative electrode plates.

[0089] As an example, the separators can be continuously arranged, either by folding or rolling between any adjacent positive or negative electrode plates.

[0090] In some embodiments, the electrode assembly can be cylindrical, flat, or polygonal, etc.

[0091] In some embodiments, the electrode assembly has tabs that allow current to be drawn from the electrode assembly. The tabs include a positive tab and a negative tab.

[0092] In some embodiments, the battery cell may include a housing. The housing is used to encapsulate components such as electrode assemblies and electrolytes. The housing may be made of steel, aluminum, plastic (such as polypropylene), composite metal (such as copper-aluminum composite), or aluminum-plastic film, etc.

[0093] As an example, a battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include, but are not limited to, square battery cells, blade-shaped battery cells, and multi-prismatic batteries, such as hexagonal prismatic batteries.

[0094] 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.

[0095] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells into a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0096] 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.

[0097] 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.

[0098] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0099] As an example, the enclosure may include a first enclosure body and a second enclosure body. The first enclosure body and the second enclosure body are fastened together to form a closed space inside the enclosure to house the individual battery cells. Here, "closed" refers to covering or closing, which can be either sealed or unsealed. The first enclosure body may be a top cover or a bottom plate.

[0100] 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.

[0101] Battery devices possess outstanding advantages such as high energy density, low environmental pollution, high power density, long service life, wide applicability, and low self-discharge coefficient, making them an important component of today's new energy development. The development of battery technology must simultaneously consider multiple design factors, such as energy density, cycle life, discharge capacity, and charge / discharge rate.

[0102] For general electrical devices, the primary energy source is battery power, especially in the field of robotics. To enhance the freedom and flexibility of the device, batteries are often used as the main energy source. However, due to the size limitations of most electrical devices, such as robots, the size of the batteries mounted on them is also limited, resulting in poor battery life. In related technologies, to improve battery life, the capacity of individual battery cells is usually increased to improve the device's capacity or energy density. However, this structure reduces the battery's output voltage, requiring an increase in the current of the system circuit to meet the same power demand. This, in turn, causes heat generation in the system circuit during use, leading to energy loss from the battery. Consequently, it is impossible to effectively balance the battery's energy density and output voltage, resulting in the continued poor battery life.

[0103] Based on the above considerations, in order to solve the problem of poor battery life of electrical devices, this application provides an electrical device including an actuator, a drive module, a battery, and a boost module. The drive module is connected to the actuator and is configured to drive the actuator to move. The boost module has a voltage input terminal and a voltage output terminal. The voltage input terminal is electrically connected to the battery, and the voltage output terminal is electrically connected to the drive module. The voltage at the voltage output terminal is greater than the voltage at the output terminal of the battery.

[0104] In this type of electrical device, the voltage input and output terminals of the boost module are electrically connected to the battery and drive module, respectively. The voltage output of the boost module is greater than the voltage output of the battery. This allows the battery to be electrically connected to the drive module via the boost module, enabling the boost module to increase the voltage output from the battery to the drive module. This satisfies the power requirements of the drive module while reducing the current in the battery's system circuit at the same power level. Consequently, it effectively reduces the heat generated in the battery's system circuit during use, thereby reducing energy loss and improving the device's range.

[0105] The electrical devices disclosed in this application can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, robots, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0106] For ease of explanation, the following embodiments use a robot as an example of an electrical device according to an embodiment of this application.

[0107] According to some embodiments of this application, please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of an electrical device 100 provided in some embodiments of this application. Figure 2 This is an exploded view of the battery device 20 of an electrical device 100 provided in some embodiments of this application. This application provides an electrical device 100, which includes an actuator 10, a drive module (not shown), a battery device 20, and a boost module 30. The drive module is connected to the actuator 10 and configured to drive the actuator 10 to move. The boost module 30 has a voltage input terminal and a voltage output terminal. The voltage input terminal is electrically connected to the battery device 20, and the voltage output terminal is electrically connected to the drive module. The voltage at the voltage output terminal is greater than the voltage at the output terminal of the battery device 20.

[0108] The actuator 10 is a component in the electrical device 100 that moves or performs actions. For example, in... Figure 1 In this context, the electrical device 100 is a robot. Correspondingly, the robot includes a torso 40 and limbs 50. The limbs 50 are the parts of the robot used to perform actions, and the actuator 10 can be the limbs 50 of the robot. The drive module is the part that drives the actuator 10 of the electrical device 100 to move. Correspondingly, the drive module can be a motor, an electric actuator, etc.

[0109] In this embodiment, the battery device 20 provides electrical energy to components such as the drive module of the power-consuming device 100. The battery device 20 may include a housing 21 and battery cells 22. The battery cells 22 are housed within the housing 21, which provides an assembly space 213 for the battery cells 22. The housing 21 may have various structures. In some embodiments, the housing 21 may include a first housing body 211 and a second housing body 212, which cover each other. The first housing body 211 and the second housing body 212 together define the assembly space 213 for accommodating the battery cells 22. The second box body 212 can be a hollow structure with one end open, and the first box body 211 can be a plate-like structure. The first box body 211 covers the open side of the second box body 212 so that the first box body 211 and the second box body 212 together define the assembly space 213. Alternatively, the first box body 211 and the second box body 212 can both be hollow structures with one side open, and the open side of the first box body 211 covers the open side of the second box body 212.

[0110] Of course, the box 21 formed by the first box body 211 and the second box body 212 can be of various shapes, such as a cylinder, a cuboid, or a cube. For example, in... Figure 2 In the middle, the shape of box 21 is a cuboid.

[0111] In the battery device 20, there can be one or more battery cells 22. When there are multiple battery cells 22, they can be connected in series, in parallel, or in a mixed configuration. A mixed configuration means that some of the battery cells 22 are connected in series and others in parallel. The multiple battery cells 22 can be directly connected in series, in parallel, or in a mixed configuration, and then the entire assembly of the multiple battery cells 22 is housed within the housing 21.

[0112] In some embodiments, the battery device 20 may also include other structures. For example, the battery device 20 may also include a busbar for connecting multiple battery cells 22 to achieve electrical connection between the multiple battery cells 22.

[0113] Each battery cell 22 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 22 can be in the form of a cuboid, cylinder, prism, or other shapes. For example, in... Figure 2 In the middle, the battery cell 22 has a cuboid structure.

[0114] In this embodiment, the voltage input terminal of the boost module 30 is electrically connected to the battery device 20, and the voltage output terminal of the boost module 30 is electrically connected to the drive module. The voltage at the voltage output terminal is greater than the voltage at the output terminal of the battery device 20, so that the battery device 20 is electrically connected to the drive module through the boost module 30, and the boost module 30 can increase the voltage provided by the battery device 20 to the drive module.

[0115] Optionally, the structure of the boost module 30 can be varied. The specific structure of the boost module 30 can be tailored to different application requirements. For example, a high-power Boost topology solution can be used, employing a UC3842 controller combined with a Boost circuit. With an input of 16-30V, optimization can achieve an output power of over 100W. A multi-stage parallel design can expand to 3kW, and the output voltage can be adjusted to 220V via feedback. Alternatively, the HVF series high-voltage module solution can be used, a 12V / 24V to 80V-350V adjustable boost module 30 supporting a maximum power of 1500W. For example, model DC-DC1500W; or, a customizable HRB series isolated power supply solution, with input 18-36V, supporting output voltage customization to over 200V, a maximum power of 40W per module, expandable to 3kW through multi-module parallel connection or customized design, isolation withstand voltage 1000VDC, suitable for high-precision scenarios; or, an SX1328 / GS3665 combination solution, where SX1328 supports 32V input, 42V / 3A output, and GS3665 supports 42V / 5A output, which can reach over 84V through cascading design, with a total power of approximately 250W, suitable for low to medium power requirements. The specific structure of the boost module 30 can be found in relevant technologies and will not be elaborated here.

[0116] In this embodiment, the voltage input terminal and voltage output terminal of the boost module 30 are electrically connected to the battery device 20 and the drive module, respectively. The voltage of the voltage output terminal of the boost module 30 is greater than the voltage of the output terminal of the battery device 20. This allows the battery device 20 to be electrically connected to the drive module through the boost module 30. The boost module 30 can boost the voltage output from the battery device 20 to the drive module, thereby meeting the power requirements of the drive module while reducing the current in the system circuit of the battery device 20 at the same power. This effectively reduces the heat generated by the system circuit of the battery device 20 during use, thereby reducing the energy loss of the battery device 20 during use and improving the battery life of the power device 100.

[0117] According to some embodiments of this application, see Figure 2 As shown, the battery device 20 includes at least one battery cell 22, and the capacity of each battery cell 22 is 16%-100% of the total capacity of the battery device 20.

[0118] The capacity of each battery cell 22 is 16%-100% of the capacity of the battery device 20. That is, the capacity of a single battery cell 22 in the power-consuming device 100 is at least 16% and at most 100% of the capacity of the battery device 20. If the capacity of the battery cell 22 is 100% of the capacity of the battery device 20, then the power-consuming device 100 includes only one battery cell 22. It should be noted that if the power-consuming device 100 includes multiple battery cells 22, the capacity of the multiple battery cells 22 can be equal or unequal, but the minimum ratio of the capacity of each battery cell 22 to the capacity of the power-consuming device 100 is 16%.

[0119] In this embodiment, by setting the capacity of each battery cell 22 to account for 16%-100% of the total capacity of the battery device 20, the number of battery cells 22 in the battery device 20 is reduced, thereby reducing the space wastage between battery cells 22 and reducing the overall space occupied by the wall thickness of the casing 221 of all battery cells 22. This is beneficial to improving the space utilization of the battery device 20 and thus increasing the energy density of the battery device 20. Since the reduction in the number of battery cells 22 in the battery device 20 will cause the output voltage of the battery device 20 to decrease, a boost module 30 is provided between the battery device 20 and the drive module to increase the voltage output from the battery device 20 to the drive module. This can improve the energy density of the battery device 20 of the power-consuming device 100 while reducing the energy loss of the power-consuming device 100, which is beneficial to further improving the endurance of the power-consuming device 100.

[0120] In some embodiments, please continue to see Figure 2 As shown, the number of battery cells 22 is n, which satisfies 2≤n≤6.

[0121] For example, in Figure 2 In this embodiment, the number of battery cells 22 in the housing 21 of the power device 100 is 3, and the 3 battery cells 22 are stacked. Of course, in other embodiments, the number of battery cells 22 in the housing 21 can also be 2, 4, 5 or 6.

[0122] In this embodiment, on the one hand, the number of battery cells 22 in the battery device 20 is set to be greater than or equal to 2 to alleviate the phenomenon that the capacity required by a single battery cell 22 is too large, which is conducive to reducing the manufacturing difficulty of the battery cell 22. On the other hand, setting the number of battery cells 22 in the battery device 20 to be less than or equal to 6 can further reduce the space waste between battery cells 22 and further reduce the space occupied by the overall wall thickness of the casing 221 of all battery cells 22, which is conducive to further improving the space utilization of the battery device 20 and further improving the energy density of the battery device 20.

[0123] In some embodiments, the capacity of the battery cell 22 is 50Ah-300Ah.

[0124] For example, the capacity of the battery cell 22 can be 50Ah, 60Ah, 70Ah, 80Ah, 90Ah, 100Ah, 110Ah, 120Ah, 130Ah, 140Ah, 150Ah, 160Ah, 170Ah, 180Ah, 190Ah, 200Ah, 210Ah, 220Ah, 230Ah, 240Ah, 250Ah, 260Ah, 270Ah, 280Ah, 290Ah, or 300Ah, etc.

[0125] In this embodiment, on the one hand, the capacity of the battery cell 22 is set to be greater than or equal to 50Ah, so that the battery cell 22 has a large capacitor structure, which is conducive to further improving the range of a single battery cell 22. On the other hand, setting the capacity of the battery cell 22 to be less than or equal to 300Ah can alleviate the phenomenon that the manufacturing difficulty of the battery cell 22 is too high due to the large capacity of the battery cell 22, and can reduce the manufacturing cost of the battery cell 22.

[0126] According to some embodiments of this application, the battery device 20 has a capacity of 0.3 kWh to 4 kWh.

[0127] The battery device 20 has a capacity that is the total capacity of its multiple battery cells 22. For example, the capacity of the battery device 20 can be 0.3 kWh, 0.4 kWh, 0.5 kWh, 0.6 kWh, 0.7 kWh, 0.8 kWh, 0.9 kWh, 1 kWh, 1.1 kWh, 1.2 kWh, 1.3 kWh, 1.4 kWh, 1.5 kWh, 1.6 kWh, 1.7 kWh, 1.8 kWh, etc. W·h, 1.9kW·h, 2kW·h, 2.1kW·h, 2.2kW·h, 2.3kW·h, 2.4kW·h, 2.5kW·h, 2.6kW·h, 2.7kW·h, 2.8kW·h, 2.9kW ·h, 3kW·h, 3.1kW·h, 3.2kW·h, 3.3kW·h, 3.4kW·h, 3.5kW·h, 3.6kW·h, 3.7kW·h, 3.8kW·h, 3.9kW·h or 4kW·h, etc.

[0128] In this embodiment, on the one hand, the capacity of the battery device 20 is set to be greater than or equal to 0.3 kWh, so that the battery device 20 has a large capacitor structure, which is beneficial to further improve the battery life of the power device 100. On the other hand, setting the capacity of the battery device 20 to be less than or equal to 4 kWh can alleviate the phenomenon that the battery device 20 is too large due to the large capacity of the battery device 20, so as to reduce the space occupied by the battery device 20 on the power device 100, and help to reduce the installation difficulty of the battery device 20 on the power device 100.

[0129] According to some embodiments of this application, see Figure 2 As shown, the battery device 20 includes multiple battery cells 22 connected in series.

[0130] In this embodiment, by setting the multiple battery cells 22 of the battery device 20 in a series connection, the output voltage of the battery device 20 is a superposition of the output voltages of the multiple battery cells 22, which is beneficial to further improve the output voltage of the battery device 20, so that the boost module 30 can boost the output voltage of the battery device 20.

[0131] According to some embodiments of this application, please refer to Figure 3 and Figure 4 , Figure 3 This is an exploded view of the battery device 20 of the power-consuming device 100 provided in some embodiments of this application. Figure 4This is a cross-sectional view of the battery device 20 of an electrical device 100 provided in some embodiments of this application. The battery device 20 may include a housing 21 and battery cells 22. An assembly space 213 is formed inside the housing 21, and the battery cells 22 are disposed within the assembly space 213.

[0132] In this embodiment, the battery device 20 includes a housing 21 and battery cells 22. By assembling the battery cells 22 into the assembly space 213 of the housing 21, the housing 21 can provide space for the battery cells 22, so that the housing 21 can play a certain protective role for the battery cells 22, which helps to reduce the damage to the battery cells 22 during use. Moreover, when the battery device 20 is provided with multiple battery cells 22, it is convenient to assemble the multiple battery cells 22 of the battery device 20 onto the power-consuming device 100, which helps to reduce the assembly difficulty of the battery device 20.

[0133] In some embodiments, please continue to see Figure 3 and Figure 4 As shown, the boost module 30 is disposed within the assembly space 213. That is, both the boost module 30 and the battery cell 22 are disposed within the housing 21, making the boost module 30 a structure built into the housing 21 of the electrical device 100.

[0134] In this embodiment, by assembling the boost module 30 within the assembly space 213 of the housing 21, the boost module 30 and the battery device 20 are integrated into one unit. This structure improves the overall integrity of the boost module 30 and the battery device 20, optimizing their layout on the device and reducing assembly difficulty. Furthermore, the voltage output from the housing 21 of the device 100 is the boosted voltage from the boost module 30, further shortening the current transmission distance between the device 100 and the boost module 30, thus reducing energy loss during transmission between the battery device 20 and the boost module 30.

[0135] In some embodiments, see Figure 3 and Figure 4 As shown, the battery device 20 includes a plurality of battery cells 22, which are stacked to form a battery cell assembly 22a, and the battery cell assembly 22a and the boost module 30 are stacked together.

[0136] Among them, the battery cell assembly 22a is an integral structure formed by stacking multiple battery cells 22 inside the housing 21 of the power device 100. Correspondingly, the battery cell assembly 22a and the boost module 30 are stacked, that is, the integral structure formed by stacking multiple battery cells 22 is a structure stacked with the boost module 30.

[0137] In this embodiment, by setting the battery cell assembly 22a formed by stacking the boost module 30 and multiple battery cells 22 into a stacked structure, the assembly compactness of the battery cells 22 and the boost module 30 in the housing 21 can be improved, and the space waste between the battery cells 22 and the boost module 30 can be reduced, which is conducive to improving the space utilization rate inside the housing 21 and thus improving the energy density of the battery device 20.

[0138] According to some embodiments of this application, see Figure 3 and Figure 4 As shown, the battery cell assembly 22a and the boost module 30 are stacked along the first direction X. The size of the boost module 30 in the first direction X is smaller than the size of the boost module 30 in the second direction Y and the third direction Z. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0139] The battery cell assembly 22a and the boost module 30 are stacked along the first direction X. That is, the overall structure formed by stacking multiple battery cells 22 and the boost module 30 are arranged along the first direction X. It should be noted that the stacking direction of the multiple battery cells 22 can be the same as the stacking direction of the battery cell assembly 22a and the boost module 30, or it can be different.

[0140] For example, the boost module 30 has a cuboid structure. Correspondingly, the size of the boost module 30 in the first direction X is smaller than the size of the boost module 30 in the second direction Y and the third direction Z. That is, the size of the boost module 30 in the first direction X is the minimum thickness of the boost module 30.

[0141] In this embodiment, the battery cell assembly 22a and the boost module 30 are stacked along the first direction X, and the size of the boost module 30 in the first direction X is smaller than the size of the boost module 30 in the second direction Y and the third direction Z. This makes the stacking direction of the battery cell assembly 22a and the boost module 30 the direction of minimum thickness of the boost module 30, thereby reducing the difficulty of stacking the boost module 30 and the battery cell assembly 22a, and optimizing the spatial layout of the battery cell assembly 22a and the boost module 30 in the housing 21, so as to reduce the overall space waste of the battery cell assembly 22a and the boost module 30 in the housing 21.

[0142] In some embodiments, see Figure 3As shown, the size of the battery cell assembly 22a in the second direction Y is smaller than the size of the battery cell assembly 22a in the first direction X and the third direction Z.

[0143] Among them, the battery cell assembly 22a formed by stacking multiple battery cells 22 has a cuboid structure. Correspondingly, the size of the battery cell assembly 22a in the second direction Y is smaller than the size of the battery cell assembly 22a in the first direction X and the third direction Z. That is, the size of the battery cell assembly 22a in the second direction Y is the minimum thickness size of the battery cell assembly 22a, so that the stacking direction of the battery cell assembly 22a and the boost module 30 is the minimum thickness direction of the boost module 30 and not the minimum thickness direction of the battery cell assembly 22a.

[0144] In this embodiment, by setting the size of the battery cell assembly 22a in the second direction Y to be smaller than the size of the battery cell assembly 22a in the first direction X and the third direction Z, the stacking direction of the battery cell assembly 22a and the boost module 30 is not the minimum thickness direction of the battery cell assembly 22a. This results in the minimum thickness direction of the boost module 30 and the minimum thickness direction of the battery cell assembly 22a being perpendicular to each other. The power device 100 with this structure can further optimize the spatial layout of the battery cell assembly 22a and the boost module 30 in the housing 21, thereby further improving the overall space utilization rate of the battery cell assembly 22a and the boost module 30 in the housing 21.

[0145] According to some embodiments of this application, see Figure 4 As shown, the ratio of the total volume of all battery cells 22 to the volume of the assembly space 213 is 70%-90%. That is, the space occupied by all battery cells 22 inside the housing 21 is 70%-90% of the internal space of the housing 21.

[0146] For example, the ratio of the total volume of all battery cells 22 to the volume of the assembly space 213 can be 70%, 71%, 72%, 73%, 74%, 75%, 76%, 77%, 78%, 79%, 80%, 81%, 82%, 83%, 84%, 85%, 86%, 87%, 88%, 89%, or 90%, etc.

[0147] In this embodiment, by setting the total volume of all battery cells 22 in the battery device 20 to occupy 70%-90% of the volume of the assembly space 213 of the housing 21, the proportion of space in the housing 21 used to accommodate the battery cells 22 is increased, which helps to improve the energy density of the battery device 20 and further improve the range of the power device 100.

[0148] According to some embodiments of this application, refer to Figure 3 and Figure 4And further refer to Figure 5 , Figure 5 This is an exploded view of the structure of a battery cell 22 provided in some embodiments of this application. The battery cell 22 includes a housing 221 and an electrode assembly 222, the electrode assembly 222 being disposed within the housing 221, and the housing 221 being cuboid in shape. That is, the battery cell 22 is a prismatic battery cell 22.

[0149] The outer casing 221 can also be used to contain electrolytes, such as electrolyte solution. The outer casing 221 can have various structural forms, such as a cylinder or a cuboid. Similarly, the outer casing 221 can be made of various materials, such as copper, iron, aluminum, steel, or aluminum alloy.

[0150] In some embodiments, the housing 221 can be a sealed structure or a non-sealed structure. As an example, when the housing 221 is a sealed structure, it can protect the electrode assembly 222 and prevent, to some extent, electrolyte leakage. When the housing 221 is a non-sealed structure, it can still protect the electrode assembly 222, and a sealing bag may be included between the housing 221 and the electrode assembly 222. The sealing bag is used to encapsulate the electrode assembly 222 and the electrolyte, etc. Specifically, the sealing bag can be a bag-shaped insulating film or an aluminum-plastic film.

[0151] In some embodiments, the housing 221 may include a housing 2211 and an end cap 2212. The housing 2211 has an internal cavity for accommodating the electrode assembly 222 and has an opening 2211a. That is, the housing 2211 is a hollow structure with an opening 2211a at one end. The end cap 2212 covers the opening 2211a of the housing 2211 and forms a sealed connection to form a closed space for accommodating the electrode assembly 222 and the electrolyte.

[0152] Of course, it is understandable that the outer casing 221 is not limited to the structure described above. The outer casing 221 can also be other structures. For example, the outer casing 221 can include a housing 2211 and two end caps 2212. The housing 2211 is a hollow structure with openings 2211a on opposite sides. One end cap 2212 is fitted onto one opening 2211a of the housing 2211 to form a sealed connection, thereby forming a closed space for accommodating the electrode assembly 222 and the electrolyte. That is, the housing 2211 only includes multiple side walls and does not have a bottom wall. Correspondingly, the housing 2211 has openings 2211a on opposite sides, and the two end caps 2212 are fitted onto the opposite sides of the housing 2211 to close the corresponding openings 2211a.

[0153] Optionally, the electrode assembly 222 housed within the housing 221 can be one or more. For example, in... Figure 5In the case, the outer casing 221 contains two electrode assemblies 222, and the two electrode assemblies 222 are stacked along their thickness direction. Of course, in other embodiments, the electrode assemblies 222 contained in the outer casing 221 may be three, four, five or six, etc.

[0154] In some embodiments, see Figure 5 As shown, the battery cell 22 may also include two electrode terminals 223. The two electrode terminals 223 are insulatedly mounted on the end cover 2212 and arranged at intervals. The two electrode terminals 223 are electrically connected to the positive electrode tab 222a and the negative electrode tab 222b of the electrode assembly 222, respectively, to output or input electrical energy of the battery cell 22.

[0155] It should be noted that the electrode terminal 223 is insulated and mounted on the housing 221, meaning that there is no electrical connection between the electrode terminal 223 and the housing 221.

[0156] For example, the electrode terminal 223 can be made of various materials, such as copper, iron, aluminum, steel or aluminum alloy.

[0157] In some embodiments, please continue to see Figure 5 As shown, the battery cell 22 may also include two current collectors 224. Both current collectors 224 are disposed inside the housing 221 and are spaced apart. One current collector 224 is used to connect one electrode terminal 223 and the positive electrode tab 222a of the electrode assembly 222, and the other current collector 224 is used to connect the other electrode terminal 223 and the negative electrode tab 222b of the electrode assembly 222, so as to realize the electrical connection between the two electrode terminals 223 and the electrode assembly 222, which helps to reduce the assembly difficulty between the electrode assembly 222 and the electrode terminal 223.

[0158] For example, the two current collectors 224 are welded to the positive electrode tab 222a and the negative electrode tab 222b respectively. Of course, in other embodiments, the current collectors 224 and the positive electrode tab 222a and the current collectors 224 and the negative electrode tab 222b may also be in a structure of mutual contact or snap-fit.

[0159] For example, the material of the current collector 224 can be various, such as copper, iron, aluminum, steel or aluminum alloy.

[0160] In some embodiments, please continue to see Figure 5 As shown, the battery cell 22 may also include a pressure relief component 225, which is disposed on the housing 221. The pressure relief component 225 is used to release the internal pressure of the battery cell 22 when the internal pressure or temperature of the battery cell 22 reaches a predetermined value.

[0161] Optionally, the pressure relief component 225 can be disposed on the end cap 2212 of the outer casing 221, or it can be disposed on the housing 2211 of the outer casing 221. Similarly, the pressure relief component 225 and the outer casing 221 can be integrally formed or separately disposed. If the pressure relief component 225 and the outer casing 221 are separately disposed, the pressure relief component 225 can be connected to the outer casing 221 by welding or other means. Correspondingly, the pressure relief component 225 can be a component such as an explosion-proof valve, explosion-proof disc, gas valve, pressure relief valve or safety valve. If the pressure relief component 225 and the outer casing 221 are integrally formed, the pressure relief component 225 is an area on the outer casing 221 with a weak structure, such as an area on the outer casing 221 with a groove.

[0162] For example, the pressure relief component 225 is disposed on the end cap 2212 of the housing 221, and the pressure relief component 225 and the end cap 2212 are separate components.

[0163] In this embodiment, by setting the outer shell 221 of the battery cell 22 to a cuboid shape, the battery cell 22 is square. The battery cell 22 with this structure can optimize the spatial layout of the battery cell 22 in the assembly space 213 of the housing 21. Especially when multiple battery cells 22 are set in the housing 21, it can effectively reduce the space waste between battery cells 22, so as to improve the internal space utilization of the battery device 20 and improve the energy density of the battery device 20.

[0164] According to some embodiments of this application, see Figure 5 As shown, the outer casing 221 includes a housing 2211 and an end cap 2212. The housing 2211 has an opening 2211a, and the end cap 2212 closes the opening 2211a. The wall thickness of the housing 2211 is 0.25mm-1.8mm.

[0165] The shell 2211 includes a bottom wall and a side wall. The side wall surrounds the bottom wall, with one end connected to the bottom wall and the other end forming an opening 2211a. It should be noted that the wall thickness of the side wall and the bottom wall of the shell 2211 are both 0.25mm-1.8mm. In some embodiments, the wall thickness of the side wall of the shell 2211 is 0.25mm-1mm, and the wall thickness of the bottom wall of the shell 2211 is 0.6mm-1.8mm.

[0166] For example, the wall thickness of the housing 2211 can be 0.25mm, 0.26mm, 0.27mm, 0.28mm, 0.29mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm, 1mm, 1.05mm, 1.1mm, 1.15mm, 1.2mm, 1.25mm, 1.3mm, 1.35mm, 1.4mm, 1.45mm, 1.5mm, 1.55mm, 1.6mm, 1.65mm, 1.7mm, 1.75mm, or 1.8mm, etc.

[0167] In this embodiment, setting the wall thickness of the housing 2211 to be greater than or equal to 0.25 mm can improve the structural strength of the housing 2211 and reduce the risk of deformation or cracking of the housing 2211 during use. On the other hand, setting the wall thickness of the housing 2211 to be less than or equal to 1.8 mm can reduce the space occupied by the outer shell 221 of a single battery cell 22 in the assembly space 213 of the housing 21, which is conducive to further improving the space utilization rate inside the housing 21 and thus improving the energy density of the battery device 20.

[0168] According to some embodiments of this application, refer to Figure 5 Please refer to further details. Figure 6 , Figure 6 This is a partial cross-sectional view of the electrode assembly 222 of a battery cell 22 provided in some embodiments of this application. The battery cell 22 includes the electrode assembly 222, which includes a positive electrode 2221 and a negative electrode 2222. The positive electrode 2221 includes a positive active material layer 2221b, and the negative electrode 2222 includes a negative active material layer 2222b. The nickel content in the positive active material layer 2221b is 70%-98% by weight, and the silicon content in the negative active material layer 2222b is 5%-100% by weight.

[0169] The positive electrode 2221 includes a positive current collector 2221a and a positive active material layer 2221b. The positive current collector 2221a is coated with the positive active material layer 2221b on at least one side in its thickness direction, and a positive tab 222a is cut and formed on the positive current collector 2221a. Similarly, the negative electrode 2222 includes a negative current collector 2222a and a negative active material layer 2222b. The negative current collector 2222a is coated with the negative active material layer 2222b on at least one side in its thickness direction, and a negative tab 222b is cut and formed on the negative current collector 2222a.

[0170] Optionally, the electrode assembly 222 may also include an isolator 2223 disposed between the positive electrode 2221 and the negative electrode 2222 to insulate and isolate the positive electrode 2221 and the negative electrode 2222.

[0171] For example, the separator 2223 is a separator membrane, and the main material of the separator membrane can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene and polyvinylidene fluoride.

[0172] In this embodiment, by making the nickel content in the positive electrode active material layer 2221b 70%-98% by weight and the silicon content in the negative electrode active material layer 2222b 5%-100% by weight, the active material of the electrode assembly 222 of the battery cell 22 is made of a high-silicon, high-nickel material, thereby increasing the energy density of the battery cell 22, which in turn increases the energy density of the battery device 20. This further enhances the battery device 100's range under the condition that the space for assembling the battery device 20 in the power device 100 is equal.

[0173] According to some embodiments of this application, see Figure 1 As shown, the electrical device 100 may also include a connecting wire (not shown in the figure), which electrically connects the battery device 20 and the boost module 30, and the length of the connecting wire is less than or equal to 100 mm.

[0174] In this embodiment, by setting the length of the connecting wire between the battery device 20 and the boost module 30 to less than or equal to 100mm, the current transmission distance between the battery device 20 and the boost module 30 is reduced, thereby reducing the resistance on the current transmission path between the battery device 20 and the boost module 30. This reduces the energy loss that occurs during the transmission of electrical energy between the battery device 20 and the boost module 30, and further reduces the energy loss of the power-consuming device 100, thereby further improving the battery life of the power-consuming device 100.

[0175] According to some embodiments of this application, see Figure 1 As shown, the electrical device 100 is a robot.

[0176] In this embodiment, by setting the power-consuming device 100 as a robot, the robot is structured to use the electrical energy of the battery device 20 as its main energy source. The robot with this structure can achieve both flexibility and improved endurance.

[0177] In some embodiments, please continue to see Figure 1As shown, the power supply device 100 is a humanoid robot. The power supply device 100 includes a torso part 40 and multiple limb parts 50, all of which are connected to the torso part 40. The limb parts 50 are actuators 10, drive modules are disposed on the limb parts 50, and battery devices 20 are disposed on the torso part 40.

[0178] The electrical device 100 has multiple drive modules, and each actuator 10 may be equipped with one or more drive modules.

[0179] For example, in Figure 1 In this embodiment, the power-consuming device 100 includes four limb parts 50. Of course, in other embodiments, the power-consuming device 100 may also include two, three, five or six limb parts 50.

[0180] In this embodiment, the power supply device 100 is a humanoid robot, and the limb part 50 of the humanoid robot is the actuator 10. By setting the drive module on the limb part 50 and setting the battery device 20 on the torso part 40, the spatial layout of the humanoid robot can be effectively optimized while facilitating the drive module to drive the corresponding limb part 50 to move, and the space of the humanoid robot for loading the battery device 20 can be expanded.

[0181] In some embodiments, see Figure 1 As shown, the boost module 30 is disposed on the torso portion 40. That is, both the boost module 30 and the battery device 20 are disposed on the torso portion 40.

[0182] For example, in Figure 1 In the humanoid robot, the battery device 20 is located on the abdomen of the torso 40, while the boost module 30 is located on the chest of the torso 40.

[0183] It should be noted that in the embodiment where the boost module 30 is built into the housing 21 of the battery device 20, both the power device 100 and the boost module 30 are located in the abdominal position of the torso 40 of the humanoid robot.

[0184] In this embodiment, by placing the boost module 30 on the torso 40 of the humanoid robot, it facilitates the electrical connection between the battery device 20 and the drive modules of the multiple limb parts 50 through the boost module 30, which helps reduce the assembly difficulty between the boost module 30 and the drive module. On the other hand, it can shorten the current transmission distance between the battery device 20 and the boost module 30, thereby reducing the resistance on the current transmission path between the battery device 20 and the boost module 30, reducing the loss of electrical energy during the transmission between the battery device 20 and the boost module 30, and further reducing the energy loss of the humanoid robot, thereby further improving the endurance of the humanoid robot.

[0185] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0186] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An electrical device, characterized in that, include: Executive agency; A drive module is connected to the actuator, and the drive module is configured to drive the actuator to move. Battery device; as well as The boost module has a voltage input terminal and a voltage output terminal. The voltage input terminal is electrically connected to the battery device, and the voltage output terminal is electrically connected to the drive module. The voltage at the voltage output terminal is greater than the voltage at the output terminal of the battery device.

2. The electrical appliance according to claim 1, characterized in that, The battery device includes at least one battery cell, and the capacity of each battery cell is 16%-100% of the total capacity of the battery device.

3. The electrical appliance according to claim 2, characterized in that, The number of battery cells is n, which satisfies 2≤n≤6.

4. The electrical appliance according to claim 2, characterized in that, The battery cell has a capacity of 50Ah-300Ah.

5. The electrical appliance according to claim 1, characterized in that, The battery device has a capacity of 0.3 kW·h to 4 kW·h.

6. The electrical appliance according to claim 1, characterized in that, The battery device includes multiple battery cells connected in series.

7. The electrical appliance according to any one of claims 1-6, characterized in that, The battery device includes a housing and individual battery cells. An assembly space is formed inside the housing, and the individual battery cells are disposed within the assembly space.

8. The electrical appliance according to claim 7, characterized in that, The boost module is located within the assembly space.

9. The electrical appliance according to claim 8, characterized in that, The battery device includes a plurality of battery cells, which are stacked to form a battery cell assembly, and the battery cell assembly and the boost module are stacked together.

10. The electrical appliance according to claim 9, characterized in that, The battery cell assembly and the boost module are stacked along a first direction; Wherein, the dimension of the boost module in the first direction is smaller than the dimension of the boost module in the second and third directions, and the first direction, the second direction and the third direction are perpendicular to each other.

11. The electrical appliance according to claim 10, characterized in that, The size of the battery cell assembly in the second direction is smaller than the size of the battery cell assembly in the first direction and the third direction.

12. The electrical appliance according to claim 7, characterized in that, The ratio of the total volume of all the battery cells to the volume of the assembly space is 70%-90%.

13. The electrical appliance according to claim 7, characterized in that, The battery cell includes a housing and an electrode assembly, wherein the electrode assembly is disposed within the housing; The outer shell is rectangular in shape.

14. The electrical appliance according to claim 13, characterized in that, The housing includes a shell and an end cap, the shell having an opening and the end cap closing the opening; The wall thickness of the shell is 0.25mm-1.8mm.

15. The electrical appliance according to claim 7, characterized in that, The battery cell includes an electrode assembly, which includes a positive electrode and a negative electrode. The positive electrode includes a positive active material layer, and the negative electrode includes a negative active material layer. The nickel content in the positive electrode active material layer is 70%-98% by weight, and the silicon content in the negative electrode active material layer is 5%-100% by weight.

16. The electrical appliance according to any one of claims 1-6, characterized in that, The electrical device also includes a connecting wire, which electrically connects the battery device and the boost module. The length of the connecting wire is less than or equal to 100mm.

17. The electrical appliance according to any one of claims 1-6, characterized in that, The electrical device is a robot.

18. The electrical appliance according to claim 17, characterized in that, The power-consuming device is a humanoid robot, which includes a torso and multiple limbs, all of which are connected to the torso. The limb portion is the actuator, the drive module is disposed in the limb portion, and the battery device is disposed in the torso portion.

19. The electrical appliance according to claim 18, characterized in that, The boost module is located in the torso section.

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