Battery device, energy storage device, energy storage system, power consuming device and charging network

Abstract

The application provides a battery device, an energy storage device, an energy storage system, an electric equipment and a charging network. The battery device comprises a battery cell, an electric connector and a battery box. The electric connector is electrically connected with the battery cell. The battery box comprises a box body and a cover. The box body has a containing space for containing the battery cell. The cover is arranged on the box body. A containing groove is concavely arranged on the surface of the cover away from the box body. At least part of the electric connector is accommodated in the containing groove and is used for pluggable connection with a power transmission socket of the electric equipment in a first direction. The cover is provided with a liquid discharge port. The liquid discharge port is in communication with an inner space of the containing groove and an outer space of the containing groove. In the case that water accumulates in the containing groove, the water can be discharged from the inner space of the containing groove to the outer space of the containing groove through the liquid discharge port, so that the water entering the electric connector is effectively improved, the risk of electric leakage of the battery device is effectively reduced, and the reliability of the battery device is effectively improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a battery device, energy storage device, energy storage system, electrical equipment, and charging network. Background Technology

[0002] With technological advancements, the battery industry has developed rapidly, and the market share and usage frequency of electrical equipment are increasing. Electric vehicles, such as electric cars, are gradually appearing in various application scenarios. At the same time, to improve the convenience of electrical equipment, especially electric vehicles, battery swapping stations for rapid battery replacement have emerged in the market.

[0003] A battery assembly typically includes individual battery cells, a battery case, and electrical connectors. The battery case houses the individual battery cells, and the electrical connectors are electrically connected to them. The battery case cover usually has a recessed receiving groove, and at least a portion of the electrical connector passes through the cover and is housed within the receiving groove for plugging and unplugging into the power outlet of the electrical device. However, water can easily accumulate in the receiving groove, causing water ingress into the electrical connector and potentially leading to electrical leakage, which negatively impacts the reliability of the battery assembly. Utility Model Content

[0004] One of the objectives of this application is to provide a battery device, energy storage device, energy storage system, electrical equipment, and charging network, aiming to solve the technical problem in the related art that the cover of the battery device is prone to water accumulation, which can lead to leakage accidents.

[0005] To solve the above-mentioned technical problems, the technical solution adopted in this application embodiment is: to provide a battery device including:

[0006] Battery cell;

[0007] Electrical connector, for electrical connection to individual battery cells;

[0008] A battery box includes a box body and a cover. The box body has a receiving space for accommodating individual battery cells. The cover is placed on the box body to close the receiving space. The surface of the cover facing away from the box body has a recessed receiving groove. At least a portion of an electrical connector is accommodated in the receiving groove and is used for plugging and unplugging with a power supply socket of an electrical device in a first direction. The cover has a drain outlet that connects the internal space of the receiving groove and the external space of the receiving groove.

[0009] The beneficial effects of the battery device provided in this application embodiment are as follows: The battery device provided in this application embodiment has a recessed receiving groove on the cover, and at least a part of the electrical connector is housed in the receiving groove. By opening a drain port on the cover, the drain port connects the internal space of the receiving groove and the external space of the receiving groove. In this way, when water accumulates in the receiving groove, the water can be discharged from the internal space of the receiving groove to the external space of the receiving groove through the drain port, thereby effectively improving the situation of water entering the electrical connector, effectively reducing the risk of leakage accident of the battery device, and thus effectively improving the reliability of the battery device.

[0010] In some embodiments of this application, the receiving tank has a bottom wall and a side wall connected to the periphery of the bottom wall, an electrical connector is disposed on the bottom wall, and a drain outlet is opened on the side wall.

[0011] By adopting the above technical solution, the accumulated liquid in the container can be discharged outward from the side of the container, making it easier to discharge the accumulated liquid to the outside of the container.

[0012] In some embodiments of this application, the bottom wall is inclined so that the liquid in the receiving tank tends to flow toward the drain outlet.

[0013] By adopting the above technical solution, the accumulated liquid in the receiving tank can flow towards the drain port along the inclined direction of the bottom wall, which can more quickly discharge the accumulated liquid to the outside of the receiving tank, thereby more effectively improving the situation of water ingress into the electrical connector, further reducing the risk of leakage accidents in the battery device, and thus further improving the reliability of the battery device.

[0014] In some embodiments of this application, a drain surface is provided on the side of the cover. Along the first direction, the drain surface is located below the bottom wall surface, and the drain outlet is provided between the receiving tank and the drain surface to connect the internal space of the receiving tank and the drain surface.

[0015] By adopting the above technical solution, the accumulated liquid in the receiving tank can be discharged to the drain surface through the drain port. Since the drain surface is located below the bottom wall, the situation of accumulated liquid flowing back into the receiving tank through the drain port is effectively improved, thereby more effectively improving the situation of water ingress into the electrical connector, further reducing the risk of leakage accidents in the battery device, and thus further improving the reliability of the battery device.

[0016] In some embodiments of this application, the cover includes a main body and a mounting part, a receiving groove is recessed on the surface of the main body facing away from the box, the mounting part is connected to the side of the main body and connected to the box, and the drain surface is provided on the surface of the mounting part facing away from the box.

[0017] By adopting the above technical solution, it is easy to form a drainage surface on the cover.

[0018] In some embodiments of this application, the drain surface is inclined so that the accumulated liquid flowing into the drain surface from the drain outlet tends to flow away from the drain outlet.

[0019] By adopting the above technical solution, the accumulated liquid flowing from the drain outlet into the drain surface can flow away from the drain outlet along the inclined direction of the drain surface, which more effectively improves the situation of the accumulated liquid flowing back into the receiving tank through the drain outlet, thereby more effectively improving the situation of water entering the electrical connector, further reducing the risk of leakage accidents in the battery device, and further improving the reliability of the battery device.

[0020] In some embodiments of this application, the electrical connector is separated from the sidewall to form a gap, which is used to accommodate the power supply socket.

[0021] By adopting the above technical solution, space can be reserved for the insertion of the electrical connector and the power socket, thereby effectively reducing the risk of interference between the power socket and the cover during the insertion process of the electrical connector.

[0022] In some embodiments of this application, the width of the gap ranges from 5mm to 30mm.

[0023] By adopting the above technical solution, on the one hand, sufficient space can be reserved for the electrical connector and the power socket to be plugged in, and on the other hand, the situation where liquid accumulates and adheres to the electrical connector and the side wall due to the tension caused by the small gap can be effectively improved. This can more effectively improve the situation of water entering the electrical connector, further reduce the risk of leakage accidents in the battery device, and further improve the reliability of the battery device.

[0024] In some embodiments of this application, the protrusion height of the electrical connector relative to the bottom wall is less than or equal to the depth H of the receiving groove.

[0025] By adopting the above technical solution, the situation of the electrical connector protruding outward from the receiving groove is effectively improved, so that the cover can fit with the mounting bracket of the electrical equipment to the maximum extent.

[0026] In some embodiments of this application, the depth of the receiving groove is greater than or equal to 2 mm.

[0027] By adopting the above technical solution, the situation of the electrical connector protruding outward from the receiving groove is effectively improved, so that the cover can fit with the mounting bracket of the electrical equipment to the maximum extent.

[0028] In some embodiments of this application, the cover has a through hole in the receiving groove, and at least a portion of the electrical connector passes through the through hole and is received in the receiving groove.

[0029] By adopting the above technical solution, it is convenient to lead at least a portion of the electrical connector into the interior of the receiving groove.

[0030] In some embodiments of this application, the electrical connector includes an insulating base and a conductive terminal. The insulating base includes a base body and a first water-blocking flange disposed on the base body. The conductive terminal is disposed on the base body and electrically connected to a battery cell. The first water-blocking flange is circumferentially disposed on the conductive terminal, passes through a through hole, and protrudes from the surface of the cover facing away from the housing.

[0031] By adopting the above technical solution, the first water-blocking flange can effectively prevent the accumulated liquid from contacting the conductive terminal, thereby more effectively improving the situation of water ingress into the electrical connector, further reducing the risk of leakage accidents in the battery device, and thus further improving the reliability of the battery device.

[0032] In some embodiments of this application, there are multiple conductive terminals. A first water-blocking flange is circumferentially disposed on the multiple conductive terminals. The insulating seat also includes multiple second water-blocking flanges disposed on the seat body. The multiple second water-blocking flanges are circumferentially disposed on the multiple conductive terminals in a corresponding manner. The second water-blocking flanges pass through the through hole and protrude from the surface of the cover body facing away from the box body.

[0033] By adopting the above technical solution, the combined action of the first and second water-blocking flanges can more effectively prevent the accumulated liquid from contacting the conductive terminals, thereby more effectively improving the situation of water ingress into the electrical connector, further reducing the risk of leakage accidents in the battery device, and thus further improving the reliability of the battery device.

[0034] In some embodiments of this application, the battery device further includes a mounting bracket connected to the housing, and an electrical connector connected to the mounting bracket.

[0035] By adopting the above technical solution, the force on the electrical connector during the insertion and removal process can be transmitted to the housing through the mounting bracket, thereby reducing the force exerted by the electrical connector on the cover during the insertion and removal process. This effectively improves the situation where liquid accumulates in the recessed area and cannot be drained outward due to the deformation of the bottom wall of the receiving groove.

[0036] In some embodiments of this application, the mounting bracket is connected to the cover.

[0037] By adopting the above technical solution, the mounting bracket can support the cover during the insertion and removal of the electrical connector, thereby more effectively improving the situation where liquid accumulates in the recessed area and cannot be drained outward due to the deformation of the bottom wall of the receiving groove.

[0038] In some embodiments of this application, the battery device further includes a seal disposed between the mounting bracket and the cover and circumferentially surrounding the through hole.

[0039] By adopting the above technical solution, the sealing performance of the battery device is effectively improved, thereby effectively reducing the risk of liquid entering the battery box through the through-hole, and further improving the reliability of the battery device.

[0040] In some embodiments of this application, the box body includes a plurality of first beams arranged sequentially along a second direction, and a mounting bracket is connected between two adjacent first beams, with the second direction intersecting the first direction.

[0041] By adopting the above technical solution, the connection strength between the mounting bracket and the housing is effectively improved, which further enhances the support strength of the mounting bracket for the electrical connector and more effectively reduces the force exerted by the electrical connector on the cover. This more effectively improves the situation where liquid accumulates in the recessed area and cannot be drained outward due to the deformation of the bottom wall of the receiving groove.

[0042] In some embodiments of this application, a plurality of first beams include a first end beam, a second end beam, a first expansion beam, and a second expansion beam. The first end beam, the first expansion beam, the second expansion beam, and the second end beam are sequentially separated along a second direction. A battery cell is disposed between the first expansion beam and the second expansion beam, and a mounting bracket is connected between the first end beam and the first expansion beam.

[0043] By adopting the above technical solution, not only is the connection strength between the mounting bracket and the enclosure effectively improved, but it is also easier to connect the mounting bracket and the enclosure.

[0044] In some embodiments of this application, the mounting bracket includes a support portion, a first support portion and a second support portion, the support portion being connected between the first support portion and the second support portion, both the first support portion and the second support portion being connected to the housing, and an electrical connector being connected to the support portion.

[0045] By adopting the above technical solution, not only can the mounting bracket have sufficient structural strength, but the structure of the mounting bracket can also be effectively simplified.

[0046] In some embodiments of this application, the first support portion and / or the second support portion are provided with reinforcing ribs.

[0047] By adopting the above technical solution, the structural strength of the mounting bracket is further improved, which further enhances the support strength of the mounting bracket for the electrical connector and more effectively reduces the force exerted by the electrical connector on the cover. This more effectively improves the situation where liquid accumulates in the recessed area and cannot be drained outward due to the deformation of the bottom wall of the receiving groove.

[0048] In some embodiments of this application, the first support portion and the second support portion are separated to form a wiring space, which is used to accommodate electrical cables.

[0049] By adopting the above technical solution, the risk of interference between the mounting bracket and the power cable is effectively reduced, and the power cable is easier to arrange.

[0050] In some embodiments of this application, the battery device further includes a quick-change locking mechanism for detachably connecting the housing and the mounting bracket of the electrical equipment.

[0051] By adopting the above technical solution, it is easier to disassemble and assemble the battery device, thus effectively improving the battery replacement efficiency.

[0052] In some embodiments of this application, the quick-change locking mechanism includes a locking component and a support member. The support member is mounted on the housing, and the locking component is mounted on the support member and is used to engage or disengage with the mounting bracket along a first direction.

[0053] By adopting the above technical solution, it is not only easy to install the quick-change locking mechanism onto the enclosure, but also to engage or disengage with the mounting bracket of the electrical equipment through the locking component, thereby realizing the battery replacement operation.

[0054] In some embodiments of this application, the locking assembly includes an adjusting member and a locking member. The adjusting member is mounted on the support member and is rotatable relative to the support member about the axis of the quick-change locking mechanism, having opposite first and second rotation directions. When the adjusting member rotates along the first rotation direction, it can drive the locking member to gradually approach the mounting bracket along the first direction so that the locking member engages with the mounting bracket. When the adjusting member rotates along the second rotation direction, it can drive the locking member to gradually move away from the mounting bracket along the first direction so that the locking member disengages from the mounting bracket.

[0055] By adopting the above technical solution, during the process of the adjusting member rotating in the first rotation direction or the second rotation direction, the locking member can not only follow the adjusting member to rotate in the first rotation direction or the second rotation direction, but also move in the first direction to engage or disengage with the mounting bracket. The structure is simple and easy to operate.

[0056] In some embodiments of this application, the locking member includes a connecting portion and a snap-fit ​​portion. The connecting portion is connected to the adjusting member, and the snap-fit ​​portion is connected to the end of the connecting portion away from the adjusting member. When the adjusting member rotates in a first rotation direction, it can drive the locking member to gradually approach the mounting bracket in the first direction and rotate in the first rotation direction, so that the snap-fit ​​portion snaps into the mounting bracket. When the adjusting member rotates in a second rotation direction, it can drive the locking member to gradually move away from the mounting bracket in the first direction and rotate in the second rotation direction, so that the snap-fit ​​portion disengages from the mounting bracket.

[0057] By adopting the above technical solution, during the rotation of the adjusting member along the first rotation direction or the second rotation direction, the connecting part can not only follow the adjusting member to rotate along the first rotation direction or the second rotation direction, but also move along the first direction to drive the locking part to rotate along the first rotation direction or the second rotation direction and move along the first direction, thereby realizing the locking part to lock or disengage from the mounting bracket. The structure is simple and easy to operate.

[0058] In some embodiments of this application, the support member is provided with a first limiting part, and the connecting part is provided with a second limiting part. The first limiting part and the second limiting part cooperate to guide the locking member to move along the first direction and limit the rotation angle of the locking member.

[0059] By adopting the above technical solution, the first limiting part and the second limiting part can cooperate to limit the rotation angle of the locking part. Under the cooperation and restriction of the first limiting part and the second limiting part, the locking part can be driven to engage or disengage with the mounting bracket, thereby facilitating the switching of the locking part between the locked state and the unlocked state. The structure is simple and easy to operate.

[0060] In some embodiments of this application, the first limiting part is a limiting groove recessed in the support member, and the second limiting part is a protrusion protruding on the outer peripheral surface of the connecting part, with the protrusion housed in the limiting groove.

[0061] By adopting the above technical solution, the protrusion can limit the rotation angle of the connecting part under the restriction of the limiting groove, and the protrusion can guide the connecting part to move relative to the support member along the first direction while rotating relative to the support member. The structure is simple, easy to implement, and has high stability.

[0062] In some embodiments of this application, the limiting groove includes a first groove segment, a second groove segment, and a third groove segment arranged sequentially along a first direction. The first groove segment and the third groove segment both extend along the first direction and are separated along a first rotation direction or a second rotation direction. The second groove segment is connected between the first groove segment and the second groove segment. When the snap-fit ​​part is snapped with the mounting bracket, the protrusion is located in the third groove segment. When the snap-fit ​​part is disengaged from the mounting bracket, the protrusion is located in the first groove segment.

[0063] By adopting the above technical solution, when the protrusion is located in the first and third grooves, it can only move along the first direction following the extension direction of the first and third grooves. When the protrusion is located in the second groove, it can both rotate relative to the support member and move relative to the support member along the first direction following the extension direction of the second groove, thereby limiting the rotation angle of the locking member and enabling it to move along the first direction.

[0064] In some embodiments of this application, the connecting portion is threadedly connected to the adjusting member.

[0065] By adopting the above technical solution, the adjusting component can not only drive the locking component to rotate, but also drive the locking component to move along the first direction. The structure is simple and easy to implement, and it forms a self-locking structure between the locking component and the adjusting component, thereby reducing the risk of the locking component sliding relative to the adjusting component along the first direction. This is beneficial to improving the reliability of the locking assembly and the mounting bracket locking each other.

[0066] Secondly, embodiments of this application also provide an energy storage device, including the battery device described in any of the above embodiments, wherein the battery device is used to store or provide electrical energy.

[0067] The energy storage device provided in this application has at least the following beneficial effects: the energy storage device provided in this application effectively improves the reliability of the energy storage device by using the battery device described in any of the above embodiments.

[0068] Thirdly, embodiments of this application also provide an energy storage system, including a power conversion device and the aforementioned energy storage device, wherein the power conversion device is used to electrically connect the power generation device and the energy storage device.

[0069] The energy storage system provided in this application has at least the following beneficial effects: the energy storage system provided in this application effectively improves the reliability of the energy storage system by adopting the energy storage device described in any of the above embodiments.

[0070] Fourthly, embodiments of this application also provide an electrical device, including the battery device, the energy storage device, or the energy storage system described in any of the above embodiments, wherein the battery device is used to store or provide electrical energy.

[0071] The electrical equipment provided in this application embodiment has at least the following beneficial effects: the electrical equipment provided in this application embodiment effectively improves the reliability of the electrical equipment by adopting the battery device, energy storage device or energy storage system described in any of the above embodiments.

[0072] Fifthly, embodiments of this application also provide a charging network, including a charging pile and the aforementioned energy storage device or energy storage system, wherein the energy storage device is used to provide electrical energy to the charging pile.

[0073] The charging network provided in this application embodiment has at least the following beneficial effects: the charging network provided in this application embodiment effectively improves the reliability of the charging network by adopting the above-mentioned energy storage device or energy storage system. Attached Figure Description

[0074] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0075] Figure 1 This is a schematic diagram of the energy storage system provided in the embodiments of this application;

[0076] Figure 2 This is a schematic diagram of the structure of the charging network provided in an embodiment of this application;

[0077] Figure 3 This is a schematic diagram of the vehicle structure provided in an embodiment of this application;

[0078] Figure 4 This is a schematic diagram of the structure of the battery device provided in the embodiments of this application;

[0079] Figure 5 for Figure 4 The diagram shows the exploded structure of the battery device.

[0080] Figure 6 for Figure 4 The diagram shows a cross-sectional view of the battery device along the AA direction.

[0081] Figure 7 for Figure 6 A schematic diagram of the structure at point C of the battery device shown;

[0082] Figure 8 This is a schematic diagram of the structure of the mounting bracket, electrical connector, and seal provided in the embodiments of this application;

[0083] Figure 9 for Figure 4 The diagram shows a cross-sectional view of the battery device along the BB direction.

[0084] Figure 10 for Figure 9 A schematic diagram of the battery device at point D shown;

[0085] Figure 11 An exploded view of the quick-change locking mechanism provided in the embodiments of this application;

[0086] Figure 12 for Figure 11 The diagram shows the structure of the guide sleeve in the quick-change locking mechanism.

[0087] The following are the labeling elements in the figure:

[0088] 1. Energy storage devices; 2. Power conversion equipment; 3. Power generation equipment; 4. Charging piles; 5. Connectors;

[0089] 1000, vehicles;

[0090] 100. Battery assembly; 10. Battery cell; 20. Battery box; 21. Box body; 211. Receiving space; 212. First beam; 212a. First end beam; 212b. Second end beam; 212c. First expansion beam; 212d. Second expansion beam; 213. Second beam; 214. Mounting beam; 22. Cover; 221. Main body; 2211. Receiving groove; 22111. Bottom wall; 22112. Side wall; 2212. Drain outlet; 2213. Through hole; 222. Mounting part; 2221. Drain surface; 30. Electrical connector; 31. Insulating base; 311. Base body; 312. First water barrier 313. Flange; 32. Second water-retaining flange; 40. Conductive terminal; 41. Mounting bracket; 42. Support part; 43. First support part; 44. Second support part; 45. Reinforcing rib; 50. Sealing element; 60. Quick-change locking mechanism; 61. Support element; 611. Sleeve; 612. Guide sleeve; 6121. First limiting part; 61211. First groove segment; 61212. Second groove segment; 61213. Third groove segment; 62. Locking assembly; 621. Locking element; 6211. Connecting part; 6212. Snap-fit ​​part; 6213. Second limiting part; 622. Adjusting element; 623. Anti-reverse element;

[0091] 200. Controller;

[0092] 300. Motor;

[0093] 400. Mounting bracket. Detailed Implementation

[0094] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0095] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are for ease of description only, not to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0096] 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 the various components shown in the accompanying drawings in the embodiments of this application are merely illustrative and should not constitute any limitation on this application.

[0097] With technological advancements, the battery industry has developed rapidly, and the market share and usage frequency of electrical equipment are increasing. Electric vehicles, such as electric cars, are gradually appearing in various application scenarios. At the same time, to improve the convenience of electrical equipment, especially electric vehicles, battery swapping stations for rapid battery replacement have emerged in the market.

[0098] Electrical equipment typically includes a mounting bracket, a battery pack, and a power outlet. The battery pack usually consists of individual battery cells, a battery case, and electrical connectors. The battery case houses the individual battery cells and is detachably mounted on the mounting bracket. The electrical connectors are electrically connected to the individual battery cells and are mounted on the cover of the battery case. The electrical connectors are used to connect to the power outlet of the electrical equipment to transmit electrical energy, signals, etc. When the battery pack is depleted, the electrical connectors can be unplugged from the power outlet, and the battery case can be removed from the mounting bracket. Then, a fully charged battery pack can be installed back onto the mounting bracket, and the electrical connectors can be plugged into the power outlet, thus completing the battery replacement operation.

[0099] In related technologies, the cover of the battery box typically has a recessed receiving groove, within which at least a portion of the electrical connector is housed. When the electrical connector is plugged into a power outlet, at least a portion of the power outlet is also housed within the receiving groove. This allows the main body of the cover to fit snugly against the mounting bracket, thus maximizing the use of the internal space of the electrical equipment. However, during use, water can easily accumulate in the receiving groove, causing water ingress into the electrical connector and potentially leading to electrical leakage, which is detrimental to the reliability of the battery pack.

[0100] Based on the above considerations, in order to reduce the risk of leakage accidents in the battery device, the battery device provided in this application embodiment has a recessed receiving groove on the cover, and at least part of the electrical connector is housed in the receiving groove. By opening a drain port on the cover, the drain port connects the internal space of the receiving groove and the external space of the receiving groove. In this way, if water accumulates in the receiving groove, the water can be discharged from the internal space of the receiving groove to the external space of the receiving groove through the drain port, thereby effectively improving the situation of water entering the electrical connector, effectively reducing the risk of leakage accidents in the battery device, and thus effectively improving the reliability of the battery device.

[0101] The technical solutions described in this application are applicable to battery devices and electrical equipment using batteries. These electrical devices can be, but are not limited to, vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools. 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. Spacecraft include airplanes, rockets, space shuttles, and spacecraft. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys. 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.

[0102] The battery device 100 provided in this application embodiment is applicable to various energy storage devices 1 and electrical devices that use the battery device 100. Please refer to... Figure 5 , Figure 5 This is an exploded structural diagram of the battery device 100 provided in an embodiment of this application. The battery device 100 may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells 10, which are connected in series, parallel, or mixed connections via a busbar.

[0103] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells 10.

[0104] As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells 10 together to form an independent module. As an example, a battery module can be formed by bundling multiple battery cells 10 together with cable ties.

[0105] In some embodiments, the battery device 100 may be a battery pack, which includes a battery case 20 and one or more individual battery cells housed in the battery case 20.

[0106] As an example, the battery cell assembly can be a battery module, which can be housed in the battery case 20 by fixing the battery module in the battery case 20.

[0107] As an example, the battery cell assembly can also be housed in the battery box 20 by directly fixing multiple battery cells 10 to the battery box 20.

[0108] Energy storage device 1 can be used in battery swapping stations, energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage device 1 may include one or more battery clusters to increase its voltage and capacity. A battery cluster may include multiple battery devices 100, which are connected in series via a busbar to increase the voltage of energy storage device 1. When energy storage device 1 includes multiple battery clusters, the clusters are connected in parallel to increase its capacity. Energy storage device 1 can store electrical energy as needed and output it when appropriate. For example, energy storage device 1 can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours.

[0109] In some embodiments, the energy storage device 1 is an energy storage container or an energy storage cabinet.

[0110] In some embodiments, the energy storage device 1 may include a cabinet and one or more battery clusters, with the battery clusters housed in the cabinet.

[0111] In some embodiments, the energy storage device 1 may include modules such as a thermal management module, a main control module, a central control module, a power distribution module, and a fire protection module.

[0112] As an example, the thermal management module may include a liquid cooling unit that supplies coolant to each battery device 100 via pipelines for regulating the temperature of the individual battery cells 10.

[0113] As an example, the main control module can serve as the battery management unit for the battery cluster, used to monitor and manage the battery cluster. The main control module can monitor information such as the current, voltage, power, or temperature of the battery cluster. For instance, it can control the charging and discharging current and voltage of the battery cluster. The main control module includes modules such as an auxiliary battery management unit (SBMU) and a fusion switch.

[0114] As an example, the central control module can serve as the battery management unit for energy storage device 1, used to monitor and manage it. The central control module can monitor information such as current, voltage, power, state of charge, and temperature of energy storage device 1. For example, it can control the charging and discharging current and voltage of energy storage device 1. As an example, the central control module includes modules such as an insulation monitoring module (IMM), a master battery management unit (MBMU), an Ethernet (ETH) module, and a fiber optic conversion module.

[0115] As an example, the fire protection module includes a control panel, detectors, alarm devices, etc., used to detect, alarm, or extinguish fires in the energy storage system.

[0116] As an example, the power distribution module can be used to distribute power to the modules in the energy storage device 1 that require electricity.

[0117] Please see Figure 1 , Figure 1 This is a schematic diagram of the energy storage system provided in an embodiment of this application. The energy storage system provided in this application can be any power system that requires the use of energy storage device 1. The energy storage system may include one or more energy storage devices 1 and a power conversion device 2 (PowerConverter System, abbreviated as PCS). The power conversion device 2 is used to connect the power generation device 3 and the energy storage device 1. The power generation device 3 is used to generate electrical energy, and the electrical energy generated by the power generation device 3 can be stored in the energy storage device 1 through the power conversion device 2. As an example, the power generation device 3 may specifically be a solar panel, hydroelectric power generation equipment, thermal power generation equipment, wind power generation equipment, etc. The specific type of the power generation device 3 is not limited in this application.

[0118] Please see Figure 2 , Figure 2This is a schematic diagram of the charging network provided in an embodiment of this application. The charging network provided in this embodiment can be any charging system that requires the use of the energy storage device 1. The charging network may include the energy storage device 1 and the charging pile 4. The charging pile 4 is electrically connected to the energy storage device 1, and the energy storage device 1 is used to provide electrical energy to the charging pile 4. The charging pile 4 is electrically connected to the battery device 100 in the energy storage device 1 via a cable. The battery device 100 can provide its stored electrical energy to the charging pile 4. The charging pile 4 has one or more connectors 5, which are used to connect to an electrical device (such as a vehicle 1000) so as to replenish the energy of the electrical device.

[0119] Electrical devices can be, but are not limited to, mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles 1000, ships, and spacecraft, such as airplanes, rockets, space shuttles, and spacecraft. For ease of explanation, the following embodiments use a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0120] Please see Figure 3 , Figure 3 This is a schematic diagram of the structure of a vehicle 1000 provided in an embodiment of this application. A battery device 100 is disposed inside the vehicle 1000, and the battery device 100 may be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery to supply power to the motor 300, for example, to meet the power requirements of the vehicle 1000 during starting, navigation, and driving.

[0121] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0122] In some embodiments, the battery box 20 of the battery device 100 may be part of the chassis structure of the vehicle 1000. For example, a portion of the battery box 20 may be at least a portion of the floor of the vehicle 1000, or a portion of the battery box 20 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 1000.

[0123] The technical solutions provided in the embodiments of this application will be described below with reference to the accompanying drawings.

[0124] Firstly, please refer to the following: Figures 4 to 7This application provides a battery device 100 including a battery cell 10, an electrical connector 30, and a battery case 20. The electrical connector 30 is electrically connected to the battery cell 10. The battery case 20 includes a case body 21 and a cover 22. The case body 21 has a receiving space 211 for accommodating the battery cell 10. The cover 22 covers the case body 21 to close the receiving space 211. The surface of the cover 22 facing away from the case body 21 has a recessed receiving groove 2211. At least a portion of the electrical connector 30 is accommodated in the receiving groove 2211 and is used for plugging and unplugging connection with the power socket of an electrical device in a first direction. The cover 22 has a drain port 2212, which communicates with the internal space of the receiving groove 2211 and the external space of the receiving groove 2211.

[0125] First, it should be noted that the battery device 100 has a first direction, a second direction, and a third direction, such as... Figure 4 and Figure 5 As shown, the first direction can be Figure 5 The Z direction shown is the height direction of the battery device 100. The second direction can be... Figure 4 and Figure 5 The X direction shown is the length direction of the battery device 100. The third direction can be... Figure 4 and Figure 5 The Y direction shown is the width direction of the battery device 100.

[0126] The battery cell 10 is the smallest unit for storing electrical energy. The battery cell 10 can be a secondary battery or a primary battery. A secondary battery is one that can be recharged to activate the active materials and continue to be used after discharge. A primary battery is one that cannot be recharged to activate the active materials and continue to be used after discharge. The battery cell 10 can also be a lithium-ion battery cell, a sodium-ion battery cell, a sodium-lithium-ion battery cell, a lithium metal battery cell, a sodium metal battery cell, a lithium-sulfur battery cell, a magnesium-ion battery cell, a nickel-metal hydride battery cell, a nickel-cadmium battery cell, or a lead-acid battery cell. The battery cell 10 can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell 10 of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic battery cells, such as hexagonal prismatic battery cells, etc. This application does not impose any particular limitations.

[0127] In some embodiments, the battery cell 10 may include a housing, an electrode assembly, and electrode terminals.

[0128] The housing may include a casing and end caps. The casing is a component that provides an internal environment for the battery cell 10, which can accommodate electrode assemblies. The casing may be a separate component with an opening. The internal environment of the battery cell 10 is formed by covering the opening with the end cap, and the electrode assemblies are housed within this internal environment. Specifically, the casing and end caps may form a common connection surface before other components are inserted into the casing. When it is necessary to encapsulate the interior of the casing, the end caps are then placed over the opening of the casing. Optionally, the casing can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the casing can be determined according to the specific shape and size of the electrode assemblies. The casing material can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, etc., and is not specifically limited here.

[0129] An end cap is a component that covers the opening of the housing to isolate the internal environment of the battery cell 10 from the external environment. The shape of the end cap can be adapted to the shape of the housing to fit the housing. In some embodiments, the end cap can be made of a material with a certain hardness and strength, so that the end cap is not easily deformed when subjected to compression and impact, so that the battery cell 10 can have higher structural strength and improve safety performance. Of course, this embodiment does not limit the material of the end cap to a single material; the end cap can be made of copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. In some embodiments, the end cap can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of the battery cell 10 reaches a threshold.

[0130] Electrode components are the parts in a battery cell 10 where electrochemical reactions occur. A battery cell 10 may contain one or more electrode components. Electrode components are mainly made of positive electrode sheets, negative electrode sheets, and separators using winding or lamination processes.

[0131] In some embodiments, the electrode assembly is a wound structure. The positive electrode and the negative electrode are wound into a wound structure.

[0132] In some embodiments, the electrode assembly has a stacked structure.

[0133] As an example, multiple positive and negative electrodes can be set, and multiple positive and multiple negative electrodes can be stacked alternately.

[0134] 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.

[0135] As an example, both the positive and negative electrode plates are folded to form multiple stacked folded segments.

[0136] As an example, multiple separators can be provided, each positioned between any adjacent positive or negative electrode plates.

[0137] As an example, the separators can be continuously arranged, either by folding or rolling between any adjacent positive or negative electrode plates.

[0138] During the charging and discharging process of a single battery cell 10, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrode plates. A separator is placed between the positive and negative electrode plates to prevent short circuits while allowing active ions to pass through.

[0139] The positive electrode may include a positive current collector and a positive active material disposed on at least one surface of the positive current collector. The negative electrode may include a negative current collector and a negative active material disposed on at least one surface of the negative current collector.

[0140] In some embodiments, the battery cell 10 further includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. This application does not impose specific limitations on the type of electrolyte, which can be selected according to requirements. The electrolyte can be liquid, gel, or solid.

[0141] In some embodiments, the electrode assembly has tabs that can conduct current from the electrode assembly. The tabs include a positive tab and a negative tab, with the positive tab electrically connected to a positive electrode plate and the negative tab electrically connected to a negative electrode plate.

[0142] Electrode terminals are components electrically connected to the electrode assembly for outputting or inputting electrical energy into the battery cell 10. Electrode terminals may be disposed on an end cap, with a portion extending into the internal environment of the battery cell 10 and directly or indirectly connected to the tabs of the electrode assembly, while the other portion is exposed in the external environment of the battery cell 10 and connected to components such as a busbar or sampling module. In some embodiments, the electrode terminals include a first electrode terminal and a second electrode terminal, with the first electrode terminal electrically connected to the positive tab and the second electrode terminal electrically connected to the negative tab. Optionally, the electrode terminals may have a columnar structure, such as a cylindrical or prismatic structure, or a plate-like structure, such as a circular or square plate. Other irregular three-dimensional structures are also possible, without specific limitations. The electrode terminals may be made of one or more metal materials, including but not limited to copper, aluminum, nickel, zinc, and iron, without specific limitations.

[0143] Electrical connector 30 is electrically connected to battery cell 10 to transmit electrical energy or electrical signals from battery cell 10 to the outside. In some embodiments, battery device 100 includes multiple battery cells 10, all of which are electrically connected to electrical connector 30 to transmit electrical energy or electrical signals from multiple battery cells 10 to the outside. Understandably, electrical connector 30 can be a high-voltage connector 5 or a low-voltage connector 5. When electrical connector 30 is a high-voltage connector 5, electrical connector 30 is plugged into the power socket of the electrical device to transmit electrical energy from battery cell 10 to the electrical appliance of the electrical device. Taking vehicle 1000 as an example, electrical connector 30 is plugged into the power socket of the electrical device to transmit electrical energy from battery cell 10 to motor 300 of vehicle 1000, thereby driving motor 300 to operate. When the electrical connector 30 is a low-voltage connector 5, it is plugged into the power socket of the electrical device to transmit the electrical signal of the battery cell 10 to the controller 200 of the electrical device. The electrical signal can be, but is not limited to, voltage, current, and temperature signals. In some embodiments, the electrical connector 30 can be directly fixed to the housing 21, directly fixed to the cover 22, or fixed between the housing 21 and the cover 22. In other embodiments, the electrical connector 30 can be fixedly connected to the housing 21, fixedly connected to the cover 22, or fixedly connected between the housing 21 and the cover 22 via a support member.

[0144] The battery box 20 is a component used to provide the internal environment of the battery device 100. The battery box 20 may include a body 21 and a cover 22, which are fastened together to form a closed space inside the battery box 20 for housing the individual battery cells 10. Here, "closed" refers to covering or shutting down; it can be sealed or not sealed. The body 21 is the main component of the battery box 20, and it provides a receiving space 211 for accommodating the individual battery cells 10. The body 21 may be a single-piece component or assembled from multiple components.

[0145] In some embodiments, the housing 21 may include a plurality of first beams 212 and two second beams 213. The plurality of first beams 212 are spaced apart along a second direction, and the two second beams 213 are spaced apart along a third direction. The plurality of first beams 212 are connected between the two second beams 213 to form the main frame of the housing 21. A cover 22 is provided on one open side of the main frame. The housing 21 may also include a bottom cover plate, which is provided on the other open side of the main frame. As an example, the first beams 212 divide the aforementioned accommodating space 211 into a battery cavity and an electrical cavity. The battery cavity is used to accommodate battery cells 10, and the electrical cavity is used to accommodate electrical components such as electrical connectors 30 and control modules.

[0146] The cover 22 is provided on one of the opening sides of the housing 21 to close the aforementioned receiving space 211. For example, when the battery device 100 is applied to the vehicle 1000, the cover 22 is provided on the opening side of the housing 21 facing the mounting bracket 400 of the vehicle 1000. The material of the cover 22 can be, but is not limited to, metal, plastic, etc.

[0147] The surface of the cover 22 facing away from the housing 21 has a recessed receiving groove 2211, within which at least a portion of the electrical connector 30 is accommodated. Understandably, the portion of the surface of the cover 22 facing away from the housing 21 is recessed along a first direction to form the receiving groove 2211, and the electrical connector 30 extends into the receiving groove 2211 along the first direction so that the electrical connector 30 can be plugged into the power socket of the electrical device along the first direction. The shape of the receiving groove 2211 can be determined according to actual application needs, such as rectangular, square, circular, polygonal, etc.

[0148] In some embodiments, the cover 22 has a through hole 2213, which extends through two opposing surfaces of the cover 22 along a first direction. At least a portion of the electrical connector 30 can protrude from the receiving space 211 of the battery box 20 through the through hole 2213 into the receiving groove 2211. The shape of the through hole 2213 can be adapted to the outer peripheral contour of the electrical connector 30. For example, if the outer peripheral contour of the electrical connector 30 is polygonal, the through hole 2213 can also be polygonal. As an example, the receiving groove 2211 has a bottom wall surface 22111 and a side wall surface 22112 connected to the periphery of the bottom wall surface 22111. The through hole 2213 is formed on the bottom wall surface 22111 of the receiving groove 2211.

[0149] The cover 22 has a drain port 2212, which is used to connect the internal space of the receiving tank 2211 and the external space of the receiving tank 2211, so that the accumulated liquid in the receiving tank 2211 can be discharged from the internal space of the receiving tank 2211 to the external space of the receiving tank 2211 through the drain port 2212.

[0150] In some embodiments, the drain outlet 2212 may be provided on the side wall 22112 of the receiving tank 2211, and the drain outlet 2212 may extend to the side of the battery box 20 so that the liquid accumulated in the receiving tank 2211 can flow to the side of the battery box 20 through the drain outlet 2212. As an example, the receiving groove 2211 can be located near the side of the battery box 20. For example, the receiving groove 2211 can be located near any side of the battery box 20 along the second direction, and the drain outlet 2212 is opened on the side wall 22112 of the receiving groove 2211 that is closest to the side, so that the liquid in the receiving groove 2211 can flow to the side through the drain outlet 2212; or, for example, the receiving groove 2211 can be located near any side of the battery box 20 along the third direction, and the drain outlet 2212 is opened on the side wall 22112 of the receiving groove 2211 that is closest to the side, so that the liquid in the receiving groove 2211 can flow to the side through the drain outlet 2212. Understandably, the drain outlet 2212 can penetrate a part of any side wall 22112 of the receiving tank 2211, or it can penetrate the entire side wall 22112 of the receiving tank 2211, that is, one side wall 22112 of the receiving tank 2211 is completely hollowed out to form the drain outlet 2212.

[0151] The battery device 100 provided in this application embodiment has a recessed receiving groove 2211 on the cover 22. At least a portion of the electrical connector 30 is housed in the receiving groove 2211. By providing a drain port 2212 on the cover 22, the drain port 2212 connects the internal space of the receiving groove 2211 and the external space of the receiving groove 2211. In this way, when water accumulates in the receiving groove 2211, the water can be discharged from the internal space of the receiving groove 2211 through the drain port 2212 to the external space of the receiving groove 2211. This effectively improves the situation of water ingress into the electrical connector 30, effectively reduces the risk of leakage accidents in the battery device 100, and thus effectively improves the reliability of the battery device 100.

[0152] In some embodiments of this application, the electrical connector 30 is disposed on the bottom wall surface 22111, the drain port 2212 is opened on the side wall surface 22112, and the bottom wall surface 22111 is inclined so that the accumulated liquid in the receiving tank 2211 tends to flow towards the drain port 2212.

[0153] Understandably, in the first direction, the height of the bottom wall surface 22111 gradually decreases towards the drain outlet 2212, that is, the part of the bottom wall surface 22111 away from the drain outlet 2212 is at a high position, and the part of the bottom wall surface 22111 near the drain outlet 2212 is at a low position, while the other parts of the bottom wall surface 22111 extend from high to low, so that the accumulated liquid in the receiving tank 2211 can flow towards the drain outlet 2212 in a direction from high to low.

[0154] By adopting the above technical solution, the accumulated liquid in the receiving tank 2211 can flow towards the drain port 2212 along the inclined direction of the bottom wall surface 22111, which can discharge the accumulated liquid to the outside of the receiving tank 2211 more quickly, thereby more effectively improving the situation of water ingress into the electrical connector 30, further reducing the risk of leakage accident of the battery device 100, and further improving the reliability of the battery device 100.

[0155] Please refer to some embodiments of this application as well. Figures 4 to 7 The cover 22 has a drain surface 2221 on its side. Along the first direction, the drain surface 2221 is located below the bottom wall surface 22111. The drain outlet 2212 is located between the receiving tank 2211 and the drain surface 2221 to connect the internal space of the receiving tank 2211 and the drain surface 2221.

[0156] Along the first direction, the drain surface 2221 is located below the bottom wall surface 22111, that is, along the first direction, the height of the bottom wall surface 22111 is greater than the height of the drain surface 2221. In this way, the accumulated liquid in the receiving tank 2211 can continue to flow into the drain surface 2221 from the drain outlet 2212, and finally flow out from the outer periphery of the cover 22 to the outside of the battery box 20.

[0157] In some embodiments, the surface of any side of the cover 22 facing away from the box 21 forms the aforementioned drain surface 2221. The receiving groove 2211 is disposed adjacent to the drain surface 2221, that is, at least a portion of the receiving groove 2211 and the drain surface 2221 are close to each other. The drain outlet 2212 is located between the receiving groove 2211 and the drain surface 2221 to connect the receiving groove 2211 and the drain surface 2221, so that the accumulated liquid in the receiving groove 2211 can flow to the drain surface 2221 through the drain outlet 2212.

[0158] By adopting the above technical solution, the accumulated liquid in the receiving tank 2211 can be discharged to the drain surface 2221 through the drain port 2212. Since the drain surface 2221 is located below the bottom wall surface 22111, the situation of accumulated liquid flowing back into the receiving tank 2211 through the drain port 2212 is effectively improved, thereby more effectively improving the situation of water ingress into the electrical connector 30, further reducing the risk of leakage accident of the battery device 100, and further improving the reliability of the battery device 100.

[0159] Please refer to some embodiments of this application as well. Figures 4 to 7 The cover 22 includes a main body 221 and a mounting part 222. The receiving groove 2211 is recessed on the surface of the main body 221 facing away from the box 21. The mounting part 222 is connected to the side of the main body 221 and connected to the box 21. The drain surface 2221 is provided on the surface of the mounting part 222 facing away from the box 21.

[0160] The main body 221 is the main part of the cover 22, used to cover the opening side of the box 21. The mounting part 222 is the part of the cover 22 used to connect to the box 21. The connection method between the mounting part 222 and the box 21 includes, but is not limited to, riveting, welding, and bonding. In some embodiments, the mounting part 222 is circumferentially disposed around the main body 221, that is, the mounting part 222 constitutes the side part of the cover 22.

[0161] The drain surface 2221 is provided on the surface of the mounting part 222 facing away from the housing 21. In some embodiments, the receiving groove 2211 is provided adjacent to the mounting part 222, that is, the receiving groove 2211 and the mounting part 222 are close to each other. The part of the mounting part 222 facing away from the housing 21 and close to the receiving groove 2211 constitutes the drain surface 2221.

[0162] By adopting the above technical solution, it is easy to form a drain surface 2221 on the cover 22.

[0163] In some embodiments of this application, the drain surface 2221 is inclined so that the accumulated liquid flowing into the drain surface 2221 from the drain port 2212 tends to flow away from the drain port 2212.

[0164] Understandably, in the first direction, the height of the drain surface 2221 gradually decreases in the direction away from the drain port 2212. That is, the part of the drain surface 2221 near the drain port 2212 is at a high position, and the part of the drain surface 2221 away from the drain port 2212 is at a low position. The other parts of the drain surface 2221 extend from high to low. After the accumulated liquid in the receiving tank 2211 enters the pressure relief surface through the drain port 2212, it can flow from high to low, so that the accumulated liquid can be quickly discharged to the outside of the battery box 20.

[0165] In some embodiments, the bottom wall surface 22111 is inclined so that the liquid in the receiving tank 2211 tends to flow toward the drain port 2212, and the drain surface 2221 is inclined so that the liquid flowing from the drain port 2212 into the drain surface 2221 tends to flow away from the drain port 2212, thereby allowing the liquid in the receiving tank 2211 to be discharged to the outside of the battery box 20 more quickly.

[0166] By adopting the above technical solution, the accumulated liquid flowing from the drain outlet 2212 into the drain surface 2221 can flow away from the drain outlet 2212 along the inclined direction of the drain surface 2221. This more effectively improves the situation where the accumulated liquid flows back into the receiving tank 2211 through the drain outlet 2212, thereby more effectively improving the situation where water enters the electrical connector 30, further reducing the risk of leakage accidents in the battery device 100, and further improving the reliability of the battery device 100.

[0167] Please refer to some embodiments of this application as well. Figures 4 to 7 The electrical connector 30 is separated from the side wall surface 22112 to form a gap, which is used to accommodate the power socket.

[0168] Understandably, when the electrical connector 30 is plugged into the power socket, the portion of the power socket located on the outer periphery of the electrical connector 30 is accommodated within the gap.

[0169] In some embodiments, the electrical connector 30 is disposed in the middle of the receiving groove 2211, and the electrical connector 30 is separated from each side wall 22112 of the receiving groove 2211 to form a gap. The width of each gap may be the same or different.

[0170] By adopting the above technical solution, space can be reserved for the electrical connector 30 to be inserted into the power socket, thereby effectively reducing the risk of interference between the power socket and the cover 22 during the insertion process of the power socket and the electrical connector 30.

[0171] In some embodiments of this application, please refer to Figure 7 The width W of the gap ranges from 5mm to 30mm.

[0172] The gap width W refers to the minimum distance between the electrical connector 30 and the corresponding side wall surface 22112. The gap width W can be determined according to the actual application requirements, and can be 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, etc.

[0173] In some embodiments, the electrical connector 30 and each side wall 22112 of the receiving groove 2211 are separated to form gaps, and the width of each gap may be different. For example, the width W of the gap between the side wall 22112 on the side of the electrical connector 30 facing away from the drain port 2212 and the electrical connector 30 is 5 mm, and the width W of the gap between the side wall 22112 on the opposite sides of the drain port 2212 and the electrical connector 30 is 30 mm.

[0174] By adopting the above technical solution, on the one hand, sufficient space can be reserved for the electrical connector 30 to be plugged into the power socket, and on the other hand, the situation where liquid accumulates and adheres to the electrical connector 30 and the side wall 22112 due to the small gap can be effectively improved. This improves the situation of water ingress into the electrical connector 30, further reduces the risk of leakage accident of the battery device 100, and further improves the reliability of the battery device 100.

[0175] In some embodiments of this application, the protrusion height of the electrical connector 30 relative to the bottom wall surface 22111 is less than or equal to the depth H of the receiving groove 2211.

[0176] The protrusion height of the electrical connector 30 relative to the bottom wall surface 22111 refers to the height of the portion of the electrical connector 30 that protrudes along the first direction relative to the bottom wall surface 22111 after passing through the through hole 2213. The depth H of the receiving groove 2211 refers to the dimension of the receiving groove 2211 along the first direction.

[0177] By adopting the above technical solution, the external protrusion of the electrical connector 30 into the receiving groove 2211 is effectively improved, thereby enabling the cover 22 to fit as closely as possible to the mounting bracket 400 of the electrical equipment.

[0178] In some embodiments of this application, please refer to Figure 7 The depth H of the receiving groove 2211 is greater than or equal to 2 mm.

[0179] The depth H of the receiving groove 2211 can be determined according to the actual application requirements, specifically 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, etc.

[0180] Under normal circumstances, the protrusion height of the electrical connector 30 relative to the bottom wall surface 22111 is less than 2mm. Therefore, limiting the depth H of the receiving groove 2211 to greater than or equal to 2mm effectively improves the situation where the electrical connector 30 protrudes outward into the receiving groove 2211, thereby allowing the cover 22 to fit as close as possible to the mounting bracket 400 of the electrical equipment.

[0181] In some embodiments of this application, please refer to Figure 8 The electrical connector 30 includes an insulating base 31 and a conductive terminal 32. The insulating base 31 includes a base body 311 and a first water-blocking flange 312 disposed on the base body 311. The conductive terminal 32 is disposed on the base body 311 and electrically connected to the battery cell 10. The first water-blocking flange 312 is circumferentially disposed around the conductive terminal 32, passes through the through hole 2213, and protrudes from the surface of the cover 22 facing away from the housing 21.

[0182] Understandably, the insulating base 31 is made of insulating material, the conductive terminal 32 is made of conductive material, the conductive terminal 32 is electrically connected to the battery cell 10, and the conductive terminal 32 is disposed on the insulating base 31 to insulate and separate the conductive terminal 32 from the battery box 20 and other conductive components.

[0183] The base 311 is the main part of the insulating base 31. The first water-blocking flange 312 has an annular structure. The first water-blocking flange 312 is disposed on the periphery of the base 311 and surrounds the conductive terminal 32. The first water-blocking flange 312 passes through the through hole 2213 and protrudes on the surface of the cover 22 facing away from the receiving space 211. That is, the first water-blocking flange 312 protrudes on the bottom wall surface 22111 to prevent the accumulated liquid from flowing along the bottom wall surface 22111 to the conductive terminal 32.

[0184] By adopting the above technical solution, the first water-blocking flange 312 can effectively prevent the accumulated liquid from contacting the conductive terminal 32, thereby more effectively improving the situation of water ingress into the electrical connector 30, further reducing the risk of leakage accidents in the battery device 100, and further improving the reliability of the battery device 100.

[0185] In some embodiments of this application, please refer to Figure 8 The number of conductive terminals 32 is multiple. The first water-blocking flange 312 is circumferentially disposed around the multiple conductive terminals 32. The insulating seat 31 also includes multiple second water-blocking flanges 313 disposed on the seat body 311. The multiple second water-blocking flanges 313 are circumferentially disposed around the multiple conductive terminals 32 in a corresponding manner. The second water-blocking flanges 313 pass through the through hole 2213 and protrude from the surface of the cover 22 facing away from the box body 21.

[0186] The second water-blocking flange 313 has an annular structure. The second water-blocking flange 313 is disposed on the base 311 and surrounds the conductive terminal 32. The second water-blocking flange 313 passes through the through hole 2213 and protrudes from the surface of the cover 22 facing away from the receiving space 211. That is, the second water-blocking flange 313 protrudes from the bottom wall surface 22111 to prevent the accumulated liquid from flowing along the bottom wall surface 22111 to the conductive terminal 32.

[0187] In some embodiments, the insulating base 31 includes a base body 311, a first water-blocking flange 312, and a plurality of second water-blocking flanges 313. The first water-blocking flange 312 and the second water-blocking flange 313 are both disposed on the base body 311. The first water-blocking flange 312 has an annular structure and is arranged around the plurality of second water-blocking flanges 313. The second water-blocking flanges 313 have an annular structure and are arranged around the conductive terminals 32. The plurality of second water-blocking flanges 313 are arranged in a one-to-one correspondence with the plurality of conductive terminals 32. The first water-blocking flange 312 and the plurality of second water-blocking flanges 313 both protrude through the through hole 2213 and protrude from the bottom wall surface 22111 to prevent the accumulated liquid from flowing along the bottom wall surface 22111 to the conductive terminals 32.

[0188] By adopting the above technical solution, under the combined action of the first water-blocking flange 312 and the second water-blocking flange 313, it is possible to more effectively prevent the accumulated liquid from contacting the conductive terminal 32, thereby more effectively improving the situation of water ingress into the electrical connector 30, further reducing the risk of leakage accident of the battery device 100, and further improving the reliability of the battery device 100.

[0189] Please refer to some embodiments of this application as well. Figures 5 to 8 The battery device 100 also includes a mounting bracket 40, which is connected to the housing 21, and an electrical connector 30 is connected to the mounting bracket 40.

[0190] Mounting bracket 40 is a component used to support electrical connector 30. Understandably, mounting bracket 40 is made of a rigid material, which may be, but is not limited to, metal, carbon fiber, hard plastic, etc. Mounting bracket 40 is connected to housing 21. Mounting bracket 40 may be connected to the main frame of housing 21 or to the bottom protective plate of housing 21. The connection method between mounting bracket 40 and housing 21 may be, but is not limited to, welding, riveting, threaded connection, etc.

[0191] In some embodiments, the battery device 100 further includes a first connector for connecting the mounting bracket 40 and the housing 21. The first connector can be, but is not limited to, a bolt, a rivet, etc. As an example, the first connector is a bolt. The mounting bracket 40 has a first through hole, and the housing 21 has a first threaded hole. The bolt passes through the first through hole and is threaded into the first threaded hole to connect the mounting bracket 40 and the housing 21. As an example, there are multiple first connectors, which are spaced apart circumferentially along the through hole 2213.

[0192] The connection between the electrical connector 30 and the mounting bracket 40 can be, but is not limited to, riveting, fastening, snap-fitting, etc. In some embodiments, the electrical connector 30 includes an insulating base 31 and a conductive terminal 32. The insulating base 31 is fixedly connected to the mounting bracket 40, and the conductive terminal 32 is disposed on the base 311 and electrically connected to the battery cell 10, so as to insulate and separate the conductive terminal 32 from the mounting bracket 40.

[0193] By adopting the above technical solution, the force on the electrical connector 30 during the insertion and removal process can be transmitted to the housing 21 through the mounting bracket 40, thereby reducing the force exerted by the electrical connector 30 on the cover 22 during the insertion and removal process. This effectively improves the situation where liquid accumulates in the recessed area and cannot be discharged outward due to the deformation of the bottom wall of the receiving groove 2211.

[0194] In some embodiments of this application, please refer to Figure 7 The mounting bracket 40 is connected to the cover 22.

[0195] In some embodiments, the electrical connector 30 is fixedly connected to the mounting bracket 40, and the mounting bracket 40 is fixedly connected to the cover 22, so that the electrical connector 30, the cover 22, and the mounting bracket 40 are relatively fixed, effectively improving the situation where the electrical connector 30 pulls on the cover 22 during insertion and removal, thereby more effectively improving the situation where liquid accumulates in the recessed area due to the deformation of the bottom wall of the receiving groove 2211 and cannot be drained outward. The connection method between the mounting bracket 40 and the cover 22 can be, but is not limited to, riveting, fastening, snap-fit, etc.

[0196] In some embodiments, the portion of the cover 22 located on the outer periphery of the through hole 2213 is connected to the mounting bracket 40, thereby effectively reducing the risk of deformation of the portion of the cover 22 located on the outer periphery of the through hole 2213.

[0197] In some embodiments, the battery device 100 further includes a second connector for connecting the mounting bracket 40 and the cover 22. The second connector can be, but is not limited to, bolts, rivets, etc. As an example, the second connector is a bolt; the cover 22 has a second through hole, and the mounting bracket 40 has a second threaded hole. The bolt passes through the second through hole and is threaded into the second threaded hole to connect the mounting bracket 40 and the cover 22. As an example, there may be multiple second connectors, spaced circumferentially along the through hole 2213.

[0198] By adopting the above technical solution, the mounting bracket 40 can support the cover 22 during the insertion and removal of the electrical connector 30, thereby more effectively improving the situation where liquid accumulates in the recessed area and cannot be discharged outward due to the deformation of the bottom wall of the receiving groove 2211.

[0199] In some embodiments of this application, please refer to Figure 7 The battery device 100 also includes a seal 50, which is disposed between the mounting bracket 40 and the cover 22 and is circumferentially disposed around the through hole 2213.

[0200] The seal 50 is used to seal the gap between the mounting bracket 40 and the cover 22 to reduce the risk of liquid accumulation in the receiving groove 2211 entering the interior of the battery box 20 through the through hole 2213 via the gap between the mounting bracket 40 and the cover 22. Understandably, the seal 50 is made of a flexible material, which can be, but is not limited to, rubber, silicone, etc.

[0201] In some embodiments, the battery device 100 further includes a second connector for connecting the mounting bracket 40 and the cover 22. After the mounting bracket 40 and the cover 22 are connected by the second connector, the mounting bracket 40 and the cover 22 cooperate to press the sealing member 50 to seal the gap between the mounting bracket 40 and the cover 22.

[0202] In some embodiments, the seal 50 has an annular structure and is annularly disposed around the electrical connector 30 and the aforementioned through hole 2213.

[0203] In some embodiments, the mounting bracket 40 has a groove on the side facing the cover 22, a portion of the seal 50 is inserted into the groove, and another portion of the seal 50 protrudes out of the groove and is used to abut against the cover 22; or, the cover 22 has a groove, a portion of the seal 50 is inserted into the groove, and another portion of the seal 50 protrudes out of the groove and is used to abut against the mounting bracket 40.

[0204] By adopting the above technical solution, the sealing performance of the battery device 100 is effectively improved, thereby effectively reducing the risk of liquid entering the battery box 20 through the through hole 2213, and further improving the reliability of the battery device 100.

[0205] Please refer to some embodiments of this application as well. Figure 5 and Figure 7 The mounting bracket 40 is connected between two adjacent first beams 212.

[0206] The connection between the mounting bracket 40 and the first beam 212 can be, but is not limited to, welding, riveting, threaded connection, etc.

[0207] By adopting the above technical solution, the connection strength between the mounting bracket 40 and the housing 21 is effectively improved, which further enhances the support strength of the mounting bracket 40 for the electrical connector 30 and more effectively reduces the force exerted by the electrical connector 30 on the cover 22. This more effectively improves the situation where liquid accumulates in the recessed area and cannot be discharged outward due to the deformation of the bottom wall of the receiving groove 2211.

[0208] Please refer to some embodiments of this application as well. Figure 5 and Figure 7 The plurality of first beams 212 include a first end beam 212a, a second end beam 212b, a first expansion beam 212c, and a second expansion beam 212d. The first end beam 212a, the first expansion beam 212c, the second expansion beam 212d, and the second end beam 212b are sequentially separated along a second direction. The battery cell 10 is disposed between the first expansion beam 212c and the second expansion beam 212d. The mounting bracket 40 is connected between the first end beam 212a and the first expansion beam 212c.

[0209] The first end beam 212a and the second end beam 212b are respectively disposed at both ends of the housing 21 along the first direction. The first expansion beam 212c and the second expansion beam 212d are disposed between the first end beam 212a and the second end beam 212b. The first expansion beam 212c and the second expansion beam 212d are separated along the first direction to define the battery cavity. The battery cell 10 is accommodated in the battery cavity. The first expansion beam 212c and the second expansion beam 212d cooperate to clamp the battery cell 10 to limit the expansion of the battery cell 10. The first end beam 212a and the first expansion beam 212c are separated along the first direction to define the electrical cavity. Electrical components such as the electrical connector 30 and the control module are accommodated in the electrical cavity.

[0210] By adopting the above technical solution, not only is the connection strength between the mounting bracket 40 and the housing 21 effectively improved, but it is also convenient to connect the mounting bracket 40 and the housing 21.

[0211] Please refer to some embodiments of this application as well. Figure 7 and Figure 8 The mounting bracket 40 includes a support portion 41, a first support portion 42, and a second support portion 43. The support portion 41 is connected between the first support portion 42 and the second support portion 43. Both the first support portion 42 and the second support portion 43 are connected to the housing 21. The electrical connector 30 is connected to the support portion 41.

[0212] Understandably, the electrical connector 30 is disposed on and connected to the support portion 41, and the first support portion 42 and the second support portion 43 are both connected to the housing 21 to support the electrical connector 30 and the support portion 41. The support portion 41, the first support portion 42, and the second support portion 43 can be integrally connected, that is, the support portion 41, the first support portion 42, and the second support portion 43 can be formed into a whole using an integral molding process. For example, the support portion 41, the first support portion 42, and the second support portion 43 can be formed into a whole using a casting molding process. The support portion 41, the first support portion 42, and the second support portion 43 can also be formed separately and then connected into a whole. For example, the support portion 41, the first support portion 42, and the second support portion 43 can also be formed separately, and then the support portion 41 is welded between the first support portion 42 and the second support portion 43.

[0213] In some embodiments, the housing 21 includes a first end beam 212a and a first expansion beam 212c, a first support portion 42 is connected to the first end beam 212a, and a second support portion 43 is connected to the first expansion beam 212c.

[0214] By adopting the above technical solution, not only can the mounting bracket 40 have sufficient structural strength, but the structure of the mounting bracket 40 can also be effectively simplified.

[0215] In some embodiments of this application, please refer to Figure 8 The first support part 42 is provided with a reinforcing rib 44.

[0216] In some embodiments, the first support portion 42 includes a first support plate and a first connecting plate, the first support plate being connected between the support portion 41 and the first connecting plate, the first connecting plate being connected to the housing 21, and the reinforcing rib 44 being connected between the first support plate and the first connecting plate.

[0217] In some embodiments, the first support portion 42 is provided with a plurality of reinforcing ribs 44, which are spaced apart. For example, the first support portion 42 is connected to the first end beam 212a, and the plurality of reinforcing ribs 44 are spaced apart along the length direction of the first end beam 212a.

[0218] In other embodiments of this application, please refer to Figure 8 The second support part 43 is provided with a reinforcing rib 44.

[0219] In some embodiments, the second support portion 43 includes a second support plate and a second connecting plate, the second support plate being connected between the support portion 41 and the second connecting plate, the second connecting plate being connected to the housing 21, and the reinforcing rib 44 being connected between the second support plate and the second connecting plate.

[0220] In some embodiments, the second support portion 43 is provided with a plurality of reinforcing ribs 44, which are spaced apart. For example, the second support portion 43 is connected to the first expansion beam 212c, and the plurality of reinforcing ribs 44 are spaced apart along the length direction of the first expansion beam 212c.

[0221] In some other embodiments of this application, please refer to Figure 8 Both the first support part 42 and the second support part 43 are provided with reinforcing ribs 44.

[0222] By adopting the above technical solution, the structural strength of the mounting bracket 40 is further improved, which further enhances the support strength of the mounting bracket 40 for the electrical connector 30 and more effectively reduces the force exerted by the electrical connector 30 on the cover 22. This more effectively improves the situation where liquid accumulates in the recessed area and cannot be discharged outward due to the deformation of the bottom wall of the receiving groove 2211.

[0223] Please refer to some embodiments of this application as well. Figure 7 and Figure 8 The first support part 42 and the second support part 43 are separated to form a wiring space 45, which is used to accommodate electrical cables.

[0224] Understandably, the electrical connector 30 is electrically connected to the battery cell 10 via a cable. When the electrical connector 30 is a high-voltage connector 5, the cable is a high-voltage cable and is used to transmit the electrical energy of the battery cell 10. When the electrical connector 30 is a low-voltage connector 5, the cable is a low-voltage cable and is used to transmit the electrical signal of the battery cell 10.

[0225] The wiring space 45 is used to accommodate electrical cables. The wiring space 45 can be used to accommodate electrical cables connecting the electrical connector 30 and the battery cell 10, or it can be used to accommodate other electrical cables located inside the battery device 100, such as the output / input cables of the control module.

[0226] By adopting the above technical solution, the risk of interference between the mounting bracket 40 and the power cables is effectively reduced, making it easier to arrange the power cables.

[0227] Please refer to some embodiments of this application as well. Figures 9 to 12 The battery device 100 also includes a quick-change locking mechanism 60, which is used to detachably connect the housing 21 and the mounting bracket 400 of the electrical equipment.

[0228] The quick-change locking mechanism 60 is used to detachably connect the housing 21 and the mounting bracket 400 of the electrical equipment for replacing the battery device 100. Specifically, after the battery device 100 is depleted, the quick-change locking mechanism 60 can be unlocked to detach from the mounting bracket 400. At this time, the battery device 100 can be removed from the mounting bracket 400, and then the fully charged battery device 100 can be docked with the mounting bracket 400 and the quick-change locking mechanism 60 can be locked to secure the battery device 100 to the mounting bracket 400, thereby enabling the replacement of the battery device 100.

[0229] By adopting the above technical solution, it is convenient to disassemble and assemble the battery device 100, which effectively improves the replacement efficiency of the battery device 100.

[0230] Please refer to some embodiments of this application as well. Figure 10 and Figure 11 The quick-change locking mechanism 60 includes a locking assembly 62 and a support member 61. The support member 61 is mounted on the housing 21, and the locking assembly 62 is mounted on the support member 61 and is used to engage or disengage with the mounting bracket 400 in a first direction.

[0231] The support member 61 is used to connect the housing 21 and to support the locking assembly 62. The connection between the support member 61 and the housing 21 can be, but is not limited to, welding, riveting, threaded connection, etc.

[0232] In some embodiments, the housing 21 further includes two mounting beams 214, one mounting beam 214 being connected to a second beam 213 and the other mounting beam 214 being connected to another second beam 213, and each of the two mounting beams 214 being provided with at least one quick-change locking mechanism 60.

[0233] The locking assembly 62 is mounted on the support 61 and is movable in a first direction to engage or disengage from the mounting bracket 400. Understandably, the locking assembly 62 has a locked state and an unlocked state. When the locking assembly 62 is in the locked state, the battery device 100 is locked to the mounting bracket 400 by the locking assembly 62. When the locking assembly 62 is in the unlocked state, the locking assembly 62 can disengage from the mounting bracket 400 to remove the battery device 100 from the mounting bracket 400.

[0234] By adopting the above technical solution, it is not only convenient to install the quick-change locking mechanism 60 onto the housing 21, but also to engage or disengage with the mounting bracket 400 of the electrical equipment through the locking component 62, thereby realizing the replacement operation of the battery device 100.

[0235] Please refer to some embodiments of this application as well. Figure 10 and Figure 11 The locking assembly 62 includes an adjusting member 622 and a locking member 621. The adjusting member 622 is mounted on the support member 61. The adjusting member 622 can rotate relative to the support member 61 about the axis of the quick-change locking mechanism 60 and has opposite first and second rotation directions. When the adjusting member 622 rotates along the first rotation direction, it can drive the locking member 621 to gradually approach the mounting bracket 400 along the first direction so that the locking member 621 engages with the mounting bracket 400. When the adjusting member 622 rotates along the second rotation direction, it can drive the locking member 621 to gradually move away from the mounting bracket 400 along the first direction so that the locking member 621 disengages from the mounting bracket 400.

[0236] The adjusting member 622 is used to drive the locking member 621 to move closer to or further away from the mounting bracket 400 in the first direction, so that the locking member 621 can engage with or disengage from the mounting bracket 400, thereby enabling the locking assembly 62 to switch between the locked state and the unlocked state.

[0237] Understandably, the axis of the quick-change locking mechanism 60 extends along a first direction, one of the first rotation direction and the second rotation direction is a clockwise direction around the axis, and the other of the first rotation direction and the second rotation direction is a counterclockwise direction around the axis.

[0238] In some embodiments, the support member 61 has a cylindrical structure, the adjusting member 622 is rotatably mounted inside the support member 61, a portion of the locking member 621 extends into the interior of the support member 61 and is connected to the adjusting member 622, and another portion of the locking member 621 extends out of the support member 61 and is used to engage or disengage the mounting bracket 400. As an example, the locking assembly 62 also includes a stop member 623, the locking member 621 extending out of the support member 61 through one port, and the stop member 623 being mounted at the other port of the support member 61 to confine the adjusting member 622 inside the support member 61.

[0239] By adopting the above technical solution, during the rotation of the adjusting member 622 along the first rotation direction or the second rotation direction, the locking member 621 can not only follow the adjusting member 622 to rotate along the first rotation direction or the second rotation direction, but also move along the first direction to engage or disengage with the mounting bracket 400. The structure is simple and easy to operate.

[0240] Please refer to some embodiments of this application as well. Figure 10 and Figure 11 The locking member 621 includes a connecting part 6211 and a snap-fit ​​part 6212. The connecting part 6211 is connected to the adjusting member 622, and the snap-fit ​​part 6212 is connected to the end of the connecting part 6211 away from the adjusting member 622. When the adjusting member 622 rotates in the first rotation direction, it can drive the locking member 621 to gradually approach the mounting bracket 400 in the first direction and rotate in the first rotation direction, so that the snap-fit ​​part 6212 is snapped into the mounting bracket 400. When the adjusting member 622 rotates in the second rotation direction, it can drive the locking member 621 to gradually move away from the mounting bracket 400 in the first direction and rotate in the second rotation direction, so that the snap-fit ​​part 6212 is disengaged from the mounting bracket 400.

[0241] Understandably, when the adjusting member 622 rotates along the first rotation direction or the second rotation direction, the connecting part 6211 can not only follow the adjusting member 622 to rotate along the first rotation direction or the second rotation direction, but can also move closer to or away from the mounting bracket 400 along the first direction, so as to drive the locking part 6212 to rotate along the first rotation direction or the second rotation direction and move closer to or away from the mounting bracket 400 along the first direction, so that the locking part 6212 can engage or disengage with the mounting bracket 400, thereby realizing the switching of the locking assembly 62 between the locked state and the unlocked state.

[0242] In some embodiments, the support member 61 has a cylindrical structure, the adjusting member 622 is rotatably installed inside the support member 61, the connecting part 6211 extends along a first direction, one end of the connecting part 6211 extends into the interior of the support member 61 and is connected to the adjusting member 622, the other end of the connecting part 6211 extends to the outside of the support member 61 and is connected to the snap-fit ​​part 6212, the snap-fit ​​part 6212 extends along a direction perpendicular to the first direction, and both ends of the snap-fit ​​part 6212 protrude relative to the sidewall of the connecting part 6211, the mounting bracket 400 has a locking hole, the locking hole extends along a direction perpendicular to the first direction, and the shape of the locking hole is adapted to the shape of the snap-fit ​​part 6212. When the quick-change locking mechanism 60 needs to be switched to the locked state, the latching part 6212 can be brought closer to the mounting bracket 400 along the first direction and pass through the lock hole. Then, the latching part 6212 continues to rotate a preset angle along the first rotation direction so that the extension direction of the latching part 6212 intersects the extension direction of the lock hole. At this time, the latching part 6212 is latched with the mounting bracket 400. When the quick-change locking mechanism 60 needs to be switched to the unlocked state, the latching part 6212 can be rotated a preset angle along the second rotation direction so that the extension direction of the latching part 6212 is parallel to the extension direction of the lock hole. Then, the latching part 6212 moves away from the mounting bracket 400 along the first direction and passes through the lock hole. At this time, the latching part 6212 disengages from the mounting bracket 400. The preset angle is α, which satisfies: 0° < α < 180°.

[0243] By adopting the above technical solution, during the rotation of the adjusting member 622 along the first rotation direction or the second rotation direction, the connecting part 6211 can not only follow the adjusting member 622 to rotate along the first rotation direction or the second rotation direction, but also move along the first direction to drive the locking part 6212 to rotate along the first rotation direction or the second rotation direction and move along the first direction, thereby realizing the locking part 6212 to lock or disengage from the mounting bracket 400. The structure is simple and easy to operate.

[0244] Please refer to some embodiments of this application as well. Figure 11 and Figure 12 The support member 61 is provided with a first limiting part 6121, and the connecting part 6211 is provided with a second limiting part 6213. The first limiting part 6121 and the second limiting part 6213 cooperate to guide the locking member 621 to move along the first direction and limit the rotation angle of the locking member 621.

[0245] The first limiting part 6121 and the second limiting part 6213 cooperate to limit the rotation angle of the connecting part 6211 relative to the support member 61. The structures of the first limiting part 6121 and the second limiting part 6213 can be various. For example, the first limiting part 6121 can be a limiting groove provided in the support member 61, and correspondingly, the second limiting part 6213 can be a protrusion on the outer peripheral surface of the connecting part 6211, which is inserted into the limiting groove to cooperate in realizing the rotation angle of the connecting part 6211. Of course, both the first limiting part 6121 and the second limiting part 6213 can be protruding. The first limiting part 6121 protrudes from one end of the support member 61 in the first direction, and the second limiting part 6213 protrudes from the outer peripheral surface of the connecting part 6211. When the connecting part 6211 rotates relative to the support member 61, the second limiting part 6213 can abut against the first limiting part 6121, so as to limit the rotation angle of the connecting part 6211 through the mutual cooperation of the first limiting part 6121 and the second limiting part 6213. The number of the first limiting part 6121 and the second limiting part 6213 can be one or more. For example, in the embodiment of this application, there are two first limiting parts 6121, and correspondingly, there are also two second limiting parts 6213, with the two second limiting parts 6213 protruding from opposite sides of the connecting part 6211.

[0246] By adopting the above technical solution, the first limiting part 6121 and the second limiting part 6213 can cooperate to limit the rotation angle of the locking member 621, so that under the cooperation and limitation of the first limiting part 6121 and the second limiting part 6213, the locking part 6212 can be driven to engage or disengage with the mounting bracket 400, thereby facilitating the switching of the locking member 621 between the locked state and the unlocked state. The structure is simple and easy to operate.

[0247] Please refer to some embodiments of this application as well. Figure 11 and Figure 12 The first limiting part 6121 is a limiting groove recessed in the support member 61, and the second limiting part 6213 is a protrusion protruding on the outer peripheral surface of the connecting part 6211, and the protrusion is accommodated in the limiting groove.

[0248] The first limiting part 6121 is a limiting groove, and the second limiting part 6213 is a protrusion. By inserting the protrusion into the limiting groove, the movement trajectory of the protrusion will be limited and guided by the limiting groove, so that the connecting part 6211 can limit the rotation angle and move along the first direction under the cooperation of the first limiting part 6121 and the second limiting part 6213.

[0249] In some embodiments, the support member 61 includes a sleeve 611 and a guide sleeve 612. The sleeve 611 is connected to the housing 21. The adjusting member 622 and the guide sleeve 612 are both disposed within the sleeve 611. The guide sleeve 612 is fitted onto the connecting portion 6211. The inner wall of the guide sleeve 612 is recessed with a limiting groove, and the protrusion is accommodated within the limiting groove. As an example, to reduce wear on the guide sleeve 612, the sleeve 611 and the guide sleeve 612 can be made of different materials so that the rigidity of the guide sleeve 612 is greater than that of the sleeve 611. For example, the sleeve 611 can be made of aluminum alloy, and the guide sleeve 612 can be made of steel.

[0250] By adopting the above technical solution, the protrusion can limit the rotation angle of the connecting part 6211 under the restriction of the limiting groove, and the protrusion can guide the connecting part 6211 to move relative to the support member 61 in the first direction while rotating relative to the support member 61. The structure is simple, easy to implement, and has high stability.

[0251] In some embodiments of this application, please refer to Figure 12 The limiting groove includes a first groove segment 61211, a second groove segment 61212, and a third groove segment 61213 arranged sequentially along a first direction. The first groove segment 61211 and the third groove segment 61213 both extend along the first direction and are separated along a first rotation direction or a second rotation direction. The second groove segment 61212 is connected between the first groove segment 61211 and the second groove segment 61212. When the snap-fit ​​part 6212 is snapped into the mounting bracket 400, the protrusion is located in the third groove segment 61213. When the snap-fit ​​part 6212 is disengaged from the mounting bracket 400, the protrusion is located in the first groove segment 61211.

[0252] The first groove segment 61211 and the third groove segment 61213 are separated along either the first or second rotation direction, and are also separated along the first direction. That is, the first and third groove segments 61211 and 61213 of the limiting groove are spaced apart in the first direction and also spaced apart in either the first or second rotation direction. The second groove segment 61212 is a spiral structure surrounding the connecting portion 6211, such that when the protrusion is located within the first and third groove segments 61211 and 61213, the connecting portion 6211 can only move along the first direction under the influence of the adjusting member 622. However, when the protrusion is located within the second groove segment 61212, the connecting portion 6211 can move along both the first and second rotation directions under the influence of the adjusting member 622.

[0253] By adopting the above technical solution, when the protrusion is located in the first groove segment 61211 and the third groove segment 61213, it can only move along the first direction following the extension direction of the first groove segment 61211 and the third groove segment 61213. When the protrusion is located in the second groove segment 61212, it can both rotate relative to the support member 61 and move relative to the support member 61 along the first direction following the extension direction of the second groove segment 61212. This achieves the limitation of the rotation angle of the locking member 621 and its ability to move along the first direction.

[0254] In some embodiments of this application, please refer to Figure 10 The connecting part 6211 is threadedly connected to the adjusting part 622.

[0255] In some embodiments, the end of the connecting part 6211 away from the snap-fit ​​part 6212 is provided with an external thread, and the interior of the adjusting member 622 is provided with an internal thread. The external thread of the connecting part 6211 and the internal thread of the adjusting member 622 both extend spirally in a first direction and are threadedly engaged with each other to thread the connecting part 6211 and the adjusting member 622. When the adjusting member 622 is rotated in the first rotation direction, the connecting part 6211 will rotate with the adjusting member 622 in the first rotation direction under the action of friction between the external thread and the internal thread. At the same time, the connecting part 6211 will also move along the internal thread towards the mounting bracket 400 so that the locking part 6212 is locked with the mounting bracket 400. When the adjusting member 622 is rotated in the second rotation direction, the connecting part 6211 will rotate with the adjusting member 622 in the second rotation direction under the action of friction between the external thread and the internal thread. At the same time, the connecting part 6211 will also move along the internal thread away from the mounting bracket 400 so that the locking part 6212 is disengaged from the mounting bracket 400.

[0256] By adopting the above technical solution, the adjusting member 622 can not only drive the locking member 621 to rotate, but also drive the locking member 621 to move along the first direction. The structure is simple and easy to implement, and it forms a self-locking structure between the locking member 621 and the adjusting member 622, so as to reduce the risk of the locking member 621 sliding relative to the adjusting member 622 along the first direction, which is conducive to improving the reliability of the locking assembly 62 and the mounting bracket 400 locking each other.

[0257] Secondly, embodiments of this application also provide an energy storage device 1, including the battery device 100 described in any of the above embodiments, the battery device 100 being used to store or provide electrical energy.

[0258] The energy storage device 1 provided in this application embodiment effectively improves the reliability of the energy storage device 1 by adopting the battery device 100 described in any of the above embodiments.

[0259] Thirdly, please refer to Figure 1 This application also provides an energy storage system, including a power conversion device and the aforementioned energy storage device 1, wherein the power conversion device is used to electrically connect the power generation device and the energy storage device 1.

[0260] The energy storage system provided in this application embodiment effectively improves the reliability of the energy storage system by employing the energy storage device 1 described in any of the above embodiments.

[0261] Fourthly, please refer to Figure 3 This application also provides an electrical device, including the battery device 100, the energy storage device 1, or the energy storage system described in any of the above embodiments, wherein the battery device 100 is used to store or provide electrical energy.

[0262] The electrical equipment provided in this application embodiment effectively improves the reliability of the electrical equipment by employing the battery device 100, the energy storage device 1, or the energy storage system described in any of the above embodiments.

[0263] Fifthly, please refer to Figure 2 This application embodiment also provides a charging network, including a charging pile 4 and the above-described energy storage device 1 or an energy storage system as described above, wherein the energy storage device 1 is used to provide electrical energy to the charging pile 4.

[0264] The charging network provided in this application embodiment effectively improves the reliability of the charging network by using the above-described energy storage device 1 or energy storage system.

[0265] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery device, characterized in that, The battery device includes: Battery cell; An electrical connector is used for electrical connection to the battery cell; A battery box includes a box body and a cover. The box body has a receiving space for accommodating the individual battery cells. The cover is disposed on the box body to close the receiving space. The surface of the cover facing away from the box body has a recessed receiving groove. At least a portion of the electrical connector is accommodated in the receiving groove and is used for plugging and unplugging connection with the power supply socket of an electrical device in a first direction. The cover has a drain outlet that connects the internal space of the receiving groove and the external space of the receiving groove.

2. The battery device according to claim 1, characterized in that, The receiving tank has a bottom wall and a side wall connected to the periphery of the bottom wall. The electrical connector is disposed on the bottom wall, and the drain outlet is opened on the side wall.

3. The battery device according to claim 2, characterized in that, The bottom wall is inclined so that the liquid in the receiving tank tends to flow towards the drain outlet.

4. The battery device according to claim 2, characterized in that, The cover has a drain surface on its side. Along the first direction, the drain surface is located below the bottom wall. The drain outlet is located between the receiving tank and the drain surface to connect the internal space of the receiving tank and the drain surface.

5. The battery device according to claim 4, characterized in that, The cover includes a main body and a mounting part. The receiving groove is recessed on the surface of the main body facing away from the box. The mounting part is connected to the side of the main body and connected to the box. The drain surface is located on the surface of the mounting part facing away from the box.

6. The battery device according to claim 4, characterized in that, The drainage surface is inclined so that the accumulated liquid flowing into the drainage surface from the drainage port tends to flow away from the drainage port.

7. The battery device according to claim 2, characterized in that, The electrical connector is separated from the side wall surface to form a gap, which is used to accommodate the power supply socket.

8. The battery device according to claim 7, characterized in that, The width of the gap ranges from 5mm to 30mm.

9. The battery device according to claim 2, characterized in that, The protrusion height of the electrical connector relative to the bottom wall is less than or equal to the depth of the receiving groove.

10. The battery device according to claim 9, characterized in that, The depth of the receiving groove is greater than or equal to 2 mm.

11. The battery device according to any one of claims 1-10, characterized in that, The cover has a through hole in the receiving groove, and at least a portion of the electrical connector passes through the through hole and is accommodated in the receiving groove.

12. The battery device according to claim 11, characterized in that, The electrical connector includes an insulating base and a conductive terminal. The insulating base includes a base body and a first water-blocking flange disposed on the base body. The conductive terminal is disposed on the base body and electrically connected to the battery cell. The first water-blocking flange is circumferentially disposed on the conductive terminal, passes through the through hole, and protrudes from the surface of the cover facing away from the housing.

13. The battery device according to claim 12, characterized in that, The number of conductive terminals is multiple. The first water-blocking flange is circumferentially disposed on the multiple conductive terminals. The insulating seat also includes multiple second water-blocking flanges disposed on the seat body. The multiple second water-blocking flanges are circumferentially disposed on the multiple conductive terminals in a one-to-one correspondence. The second water-blocking flanges pass through the through hole and protrude from the surface of the cover body facing away from the box body.

14. The battery device according to claim 11, characterized in that, The battery device also includes a mounting bracket connected to the housing, and an electrical connector connected to the mounting bracket.

15. The battery device according to claim 14, characterized in that, The mounting bracket is connected to the cover.

16. The battery device according to claim 14, characterized in that, The battery device further includes a seal, which is disposed between the mounting bracket and the cover and circumferentially surrounds the through hole.

17. The battery device according to claim 14, characterized in that, The housing includes a plurality of first beams arranged sequentially along a second direction, and the mounting bracket is connected between two adjacent first beams. The second direction intersects with the first direction.

18. The battery device according to claim 17, characterized in that, The plurality of first beams include a first end beam, a second end beam, a first expansion beam, and a second expansion beam. The first end beam, the first expansion beam, the second expansion beam, and the second end beam are sequentially separated along a second direction. The battery cell is disposed between the first expansion beam and the second expansion beam. The mounting bracket is connected between the first end beam and the first expansion beam.

19. The battery device according to claim 14, characterized in that, The mounting bracket includes a support portion, a first support portion, and a second support portion. The support portion is connected between the first support portion and the second support portion. Both the first support portion and the second support portion are connected to the housing. The electrical connector is connected to the support portion.

20. The battery device according to claim 19, characterized in that, The first support portion and / or the second support portion are provided with reinforcing ribs.

21. The battery device according to claim 19, characterized in that, The first support portion and the second support portion are separated to form a wiring space, which is used to accommodate electrical cables.

22. The battery device according to any one of claims 1-10, characterized in that, The battery device also includes a quick-change locking mechanism for detachably connecting the housing and the mounting bracket of the electrical equipment.

23. The battery device according to claim 22, characterized in that, The quick-change locking mechanism includes a locking component and a support member. The support member is mounted on the housing, and the locking component is mounted on the support member and is used to engage or disengage with the mounting bracket along the first direction.

24. The battery device according to claim 23, characterized in that, The locking assembly includes an adjusting member and a locking member. The adjusting member is mounted on the support member and is rotatable relative to the support member about the axis of the quick-change locking mechanism, having opposite first and second rotation directions. When the adjusting member rotates along the first rotation direction, it can drive the locking member to gradually approach the mounting bracket along the first direction, so that the locking member engages with the mounting bracket. When the adjusting member rotates along the second rotation direction, it can drive the locking member to gradually move away from the mounting bracket along the first direction, so that the locking member disengages from the mounting bracket.

25. The battery device according to claim 24, characterized in that, The locking member includes a connecting portion and a snap-fit ​​portion. The connecting portion is connected to the adjusting member, and the snap-fit ​​portion is connected to the end of the connecting portion away from the adjusting member. When the adjusting member rotates along the first rotation direction, it can drive the locking member to gradually approach the mounting bracket along the first direction and rotate along the first rotation direction, so that the snap-fit ​​portion snaps into the mounting bracket. When the adjusting member rotates along the second rotation direction, it can drive the locking member to gradually move away from the mounting bracket along the first direction and rotate along the second rotation direction, so that the snap-fit ​​portion disengages from the mounting bracket.

26. The battery device according to claim 25, characterized in that, The support member is provided with a first limiting part, and the connecting part is provided with a second limiting part. The first limiting part and the second limiting part cooperate to guide the locking member to move along the first direction and limit the rotation angle of the locking member.

27. The battery device according to claim 26, characterized in that, The first limiting part is a limiting groove recessed in the support member, and the second limiting part is a protrusion protruding on the outer peripheral surface of the connecting part, the protrusion being accommodated in the limiting groove.

28. The battery device according to claim 27, characterized in that, The limiting groove includes a first groove segment, a second groove segment, and a third groove segment arranged sequentially along the first direction. The first groove segment and the third groove segment both extend along the first direction and are separated along the first rotation direction or the second rotation direction. The second groove segment connects the first groove segment and the second groove segment. When the snap-fit ​​part is snapped with the mounting bracket, the protrusion is located in the third groove segment. When the snap-fit ​​part is disengaged from the mounting bracket, the protrusion is located in the first groove segment.

29. The battery device according to claim 25, characterized in that, The connecting part is threadedly connected to the adjusting member.

30. An energy storage device, characterized in that, Includes a battery device as described in any one of claims 1-29, the battery device being used to store or provide electrical energy.

31. An energy storage system, characterized in that, It includes a power conversion device and an energy storage device as described in claim 30, wherein the power conversion device is used to electrically connect the power generation device and the energy storage device.

32. An electrical appliance, characterized in that, Includes a battery device as described in any one of claims 1-29, an energy storage device as described in claim 30, or an energy storage system as described in claim 31, wherein the battery device is used to store or provide electrical energy.

33. A charging network, characterized in that, It includes a charging pile and an energy storage device as described in claim 30 or an energy storage system as described in claim 31, wherein the energy storage device is used to provide electrical energy to the charging pile.

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