Battery device, energy storage device and electrical device

Abstract

Provided in the present application are a battery device, an energy storage device and an electrical device. The battery device (200) comprises a battery cell (300) and an electrical control assembly (400), wherein the electrical control assembly comprises a circuit board (51), a housing (40) and a covering structure (53), and a connector socket (52) is provided on the circuit board; an accommodating cavity (401) is provided in the housing (40), the circuit board (51) is mounted in the accommodating cavity (401), and an opening (402) allowing the connector socket (52) to extend out is provided in the housing (40); and the covering structure (53) is arranged on the housing (40) and at least partially covers a gap (403) between the connector socket (52) and a side wall of the opening (402). Using the covering structure (53) to reduce or even close the gap (403) between the connector socket (52) and the side wall of the opening (402) can enable the electrical control assembly to meet desired protection level requirements.

Description

Battery device, energy storage device and electric device

[0001] The present application claims priority to the Chinese patent application No. 202411387990.9, filed on September 30, 2024 in the China Patent Office and entitled "Battery device, energy storage device and electric device", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application belongs to the technical field of battery, more specifically, relates to a battery device, an energy storage device and an electric device. BACKGROUND

[0003] Energy saving and emission reduction is the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their energy saving and environmental protection advantages. For electric vehicles, battery technology is an important factor for their development.

[0004] The battery management system usually includes a housing, a circuit board and a cover. A connector socket is arranged on the circuit board to connect the circuit in the battery device or connect an external circuit. The circuit board is installed in the housing, and the cover is arranged on the housing, and an opening is arranged on the cover to allow the connector socket to extend out to connect the corresponding circuit. However, due to the tolerance of each component, the gap between the connector socket and the side wall of the opening is difficult to control, which makes it difficult for the battery management system to meet the set protection level requirements.

[0005] SUMMARY

[0006] The purpose of the embodiments of the present application is to provide a battery device, an energy storage device and an electric device to improve the problem that the gap between the connector socket and the side wall of the corresponding opening on the cover is difficult to control in the related art, which makes it difficult for the battery management system to meet the set protection level requirements.

[0007] In a first aspect, the embodiments of the present application provide a battery device, comprising a battery monomer and an electric control assembly electrically connected with the battery monomer, the electric control assembly comprising:

[0008] a circuit board, which is internally provided with an accommodating cavity, and is provided with a connector socket;

[0009] a housing, which is internally provided with an accommodating cavity, and the circuit board is installed in the accommodating cavity, and the housing is provided with an opening for the connector socket to extend out;

[0010] a covering structure, which is arranged on the housing and surrounds the connector socket, and at least partially covers the gap between the connector socket and the side wall of the opening.

[0011] In the technical scheme of the embodiment of the application, the covering structure is arranged on the shell, the covering structure is supported by the shell, the covering structure is arranged around the connector socket, and the covering structure at least partially covers the gap between the connector socket and the sidewall of the opening, so that the gap between the connector socket and the sidewall of the opening can be shielded, reduced or closed according to the protection level requirement, and the electric control assembly can meet the protection level requirement. In addition, the size of the opening can be made larger to facilitate the connector socket to pass through the opening, reduce the influence of the size chain tolerance on the assembly of the connector socket, and reduce the risk that the sidewall of the opening interferes with the connector socket.

[0012] In some embodiments, the covering structure comprises an elastic member, one side of the elastic member is connected to the shell, and the other side of the elastic member at least partially covers the gap.

[0013] The elastic member is connected to the shell on one side to facilitate the elastic member to be supported by the shell, and the other side of the elastic member at least partially covers the gap between the connector socket and the sidewall of the opening, which facilitates assembly, and in particular, due to the elastic deformation characteristics of the elastic member, the elastic member can be well adapted to the gap between the connector socket and the sidewall of the opening, thereby weakening the size tolerance accumulation problem between components, and better meeting the protection level requirement of the electric control assembly.

[0014] In some embodiments, at least one side of the connector socket is provided with an elastic member, one side of the elastic member is connected to the shell, and the other side of the elastic member covers at least part of the gap on the corresponding side of the connector socket.

[0015] The elastic member is arranged on at least one side of the connector socket, and the gap on the corresponding side of the connector socket can be shielded by the elastic member, so that the corresponding side of the connector socket meets the protection level requirement.

[0016] In some embodiments, the elastic member is connected to a hard member on the side close to the connector socket.

[0017] The combination of the hard member and the elastic member can realize an elastic and telescopic structure to weaken the size tolerance accumulation between components, and the arrangement of the hard member can also improve the structural strength, as long as the fitting of the hard member and the side of the connector socket is controlled, which facilitates production and improves the qualification rate.

[0018] In some embodiments, the hard member extends between the connector socket and the sidewall of the opening.

[0019] The hard member extends between the connector socket and the sidewall of the opening, which can better shield the gap between the connector socket and the sidewall of the opening, so as to adjust the size of the gap, and further make the electric control assembly meet the protection level requirement.

[0020] In some embodiments, the hard part is integrally injection molded with the elastic part.

[0021] The hard part is integrally injection molded with the elastic part, so as to facilitate the connection of the hard part and the elastic part and facilitate the processing and manufacturing.

[0022] In some embodiments, the hard part has an inner hole, and the connector socket passes through the inner hole, so that the hard part is adapted to be fitted on the connector socket.

[0023] The hard part is provided with an inner hole and is fitted on the connector socket. As long as the profile of the connector socket and the size of the inner hole of the hard part are controlled during production, the assembly gap can be well controlled when the hard part is fitted on the connector socket, the production efficiency is high, and the production qualified rate can be improved.

[0024] In some embodiments, the distance between the opposite two side walls of the inner hole is less than or equal to 1mm different from the distance between the corresponding opposite two sides of the connector socket.

[0025] The distance between the opposite two side walls of the inner hole is less than or equal to 1mm different from the distance between the corresponding opposite two sides of the connector socket, so that the electric control assembly meets the requirement of protection level IP40.

[0026] In some embodiments, the hard part is a plurality of hard parts, and the plurality of hard parts are arranged around the connector socket.

[0027] The plurality of hard parts are combined to be arranged around the connector socket, which is convenient for design, and the plurality of hard parts can be called according to the needs to adapt to connector sockets of different shapes.

[0028] In some embodiments, the elastic part elastically abuts against the connector socket.

[0029] The elastic part abuts against the connector socket, which can well close the gap between the connector socket and the side wall of the opening, so that the electric control assembly meets the required protection level requirement.

[0030] In some embodiments, the elastic part is provided with an opening through which the connector socket passes.

[0031] The opening is provided on the elastic part to be fitted on the connector socket, which can facilitate the adjustment of the gap between the peripheral side of the connector socket and the side wall of the opening, so as to better make the electric control assembly meet the required protection level requirement.

[0032] In some embodiments, the elastic part is an elastic film, or the elastic part is a rubber ring.

[0033] The elastic part uses an elastic film, which has low cost and only needs to be simply opened. The size precision requirement of the opening is low, and the elastic part is convenient to fit on the connector socket.

[0034] The elastic part uses a rubber ring, which has low cost and is convenient to assemble.

[0035] In some embodiments, the elastic member is bonded to the housing.

[0036] The elastic member is bonded to the housing to facilitate assembly of the elastic member and to support the elastic member by the housing.

[0037] In some embodiments, the elastic member is integrally injection molded with the housing.

[0038] The elastic member is integrally injection molded with the housing to facilitate good fixation of the elastic member to the housing and to facilitate processing and manufacturing.

[0039] In some embodiments, the elastic member includes a connecting portion and an extending portion, the connecting portion is connected to the housing, the extending portion is connected to one side of the connecting portion close to the connector socket, and the extending portion extends along the thickness direction of the connecting portion.

[0040] The elastic member is provided with the connecting portion to be connected to the housing, and the extending portion is provided to extend towards one side or opposite sides of the connecting portion, which can increase the structural strength of the extending portion in the thickness direction of the connecting portion, so as to shield the gap between the connector socket and the side wall of the opening, improve the product qualification rate, and make the electric control assembly meet the required protection level requirement.

[0041] In some embodiments, the connecting portion is connected to the side of the housing away from the circuit board, or the connecting portion is connected to the side of the housing facing the circuit board.

[0042] The connecting portion is connected to the side of the housing away from the circuit board to facilitate assembly of the elastic member, in particular, the elastic member can be assembled after the connector socket extends out of the opening of the housing, which facilitates installation of the elastic member.

[0043] The connecting portion is connected to the side of the housing facing the circuit board, so that the elastic member can be assembled with the housing first, and then the connector socket is assembled with the housing, which facilitates overall assembly of the electric control assembly.

[0044] In some embodiments, the covering structure is bonded to the side wall of the connector socket.

[0045] The covering structure is bonded to the side wall of the connector socket to seal the gap between the connector socket and the side wall of the opening well, so that the electric control assembly meets the required protection level requirement.

[0046] In some embodiments, the covering structure includes a sealant filled in the gap.

[0047] The sealant is used to seal the gap between the connector socket and the side wall of the opening well, so that the electric control assembly meets the required protection level requirement.

[0048] In some embodiments, the covering structure comprises a covering body connected to the shell, and the covering body at least partially covers the gap.

[0049] With the covering body, the gap between the connector socket and the sidewall of the opening can be shielded by the covering body, so that the electric control assembly meets the required protection level requirement.

[0050] In some embodiments, the shell comprises a first shell and a second shell, and the first shell and the second shell enclose a receiving cavity; the first shell is provided with an opening, and / or the second shell is provided with an opening, and / or the first shell and the second shell are cooperatively provided with an opening.

[0051] The shell structure is simple, convenient to process and manufacture, and convenient for assembly of the circuit board.

[0052] In some embodiments, the connector socket is a plurality of connector sockets, and the covering structures corresponding to at least two adjacent connector sockets are connected into one body.

[0053] Connecting the covering structures of at least two adjacent connector sockets into one body can facilitate the connection and assembly of the covering structure and the shell.

[0054] In some embodiments, the pins of the connector socket are connected to the circuit board by soldering.

[0055] Connecting the pins of the connector socket to the circuit board by soldering is convenient for assembly and facilitates mass production.

[0056] In a second aspect, the embodiments of the present application provide an energy storage device, comprising the battery device as described in the above embodiments, and the battery device is used for storing or providing electric energy.

[0057] In a third aspect, the embodiments of the present application provide a power consumption device, comprising the battery device as described in the above embodiments or the energy storage device as described in the above embodiments, and the battery device is used for storing or providing electric energy.

[0058] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, the specific embodiments of the present application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following will describe the specific embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0059] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or exemplary technical description, obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0060] Fig. 1 is a structural schematic diagram of a vehicle according to some embodiments of the present application;

[0061] Fig. 2 is a structural schematic diagram of a charging network according to some embodiments of the present application;

[0062] Fig. 3 is a structural schematic diagram of an energy storage system according to some embodiments of the present application;

[0063] Fig. 4 is a structural schematic diagram of an energy storage device according to some embodiments of the present application;

[0064] Fig. 5 is an exploded structural schematic diagram of a battery device according to some embodiments of the present application;

[0065] Fig. 6 is a structural schematic diagram of an electric control assembly according to some embodiments of the present application;

[0066] Fig. 7 is a structural schematic diagram of the electric control assembly of Fig. 6 without a shell;

[0067] Fig. 8 is a front structural schematic diagram of the electric control assembly of Fig. 6;

[0068] Fig. 9 is a partial cross-sectional structural schematic diagram I along line A-A of Fig. 8;

[0069] Fig. 10 is an enlarged view of a cover structure of Fig. 8;

[0070] Fig. 11 is a partial cross-sectional structural schematic diagram II along line A-A of Fig. 8;

[0071] Fig. 12 is a partial cross-sectional structural schematic diagram III along line A-A of Fig. 8;

[0072] Fig. 13 is a partial cross-sectional structural schematic diagram IV along line A-A of Fig. 8;

[0073] Fig. 14 is a partial cross-sectional structural schematic diagram V along line A-A of Fig. 8;

[0074] Fig. 15 is a partial cross-sectional structural schematic diagram VI along line A-A of Fig. 8;

[0075] Fig. 16 is a front structural schematic diagram of an electric control assembly according to some other embodiments of the present application.

[0076] In the drawings, the main reference signs refer to the following: 11, vehicle; 111, controller; 112, motor; 12, charging network; 121, charging pile; 122, connecting device; 13, energy storage system; 131, power conversion device; 132, power generation device; 14, energy storage device; 141, cabinet body; 200, battery device; 20, box body; 21, top cover; 22, bottom plate; 23, frame; 24, reinforcing beam; 241, mounting beam; 300, battery monomer; 400, electric control assembly; 40, shell; 401, containing cavity; 402, opening; 403, gap; 41, first shell; 42, second shell; 43, mounting hole; 51, circuit board; 52, connector socket; 521, pin; 53, covering structure; 531, elastic piece; 5310, opening; 5311, connecting part; 5312, extension part; 532, hard piece; 5321, inner hole; 533, sealing glue; 534, covering body; 54, double-sided adhesive. DETAILED DESCRIPTION

[0077] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, and are not intended to limit the present application.

[0078] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the terms "include" and "have" and any variations thereof in the specification and in the claims and the above description of drawings shall not be construed as excluding any additional elements or steps.

[0079] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0080] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined in any suitable manner with other embodiments.

[0081] If there is no special indication, all the embodiments and optional embodiments of the present application can be combined to form new technical solutions.

[0082] If there is no special indication, all the technical features and optional technical features of the present application can be combined to form new technical solutions.

[0083] In the description of the embodiments of the present application, the term "and / or" is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0084] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces). The meaning of "several" is one or more, unless otherwise explicitly specified.

[0085] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0086] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0087] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0088] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical term "adjacent" refers to being close in position. For example, there are three components A1, A2 and B, the distance between A1 and B is greater than the distance between A2 and B, then A2 is closer to B than A1, that is, A2 is adjacent to B, and it can also be said that B is adjacent to A2. For another example, there are multiple C components, and the multiple C components are C1, C2, …, Cn respectively. When one of the C components, such as C2, is closer to the B component than the other C components, then B is adjacent to C2, and it can also be said that C2 is adjacent to B. N When one of the C components, such as C2, is closer to the B component than the other C components, then B is adjacent to C2, and it can also be said that C2 is adjacent to B.

[0089] An electric control assembly is usually arranged in a battery device, such as a battery management system, a battery monitoring unit, etc., to collect working information of each battery monomer in the battery device and control the charging and discharging of each battery monomer. The electric control assembly usually includes a circuit board and a shell, and the shell generally includes a shell body and a cover. A connector socket is arranged on the circuit board to connect the circuit in the battery device or connect an external circuit. The circuit board is installed in the shell body, and the cover is arranged on the shell body, and an opening is arranged on the cover to allow the connector socket to extend out to connect the corresponding circuit. The structure of such an electric control assembly has the following size chain tolerances: the size tolerance of the shell body, the positioning tolerance of the connection between the shell body and the circuit board, the size tolerance of the circuit board itself, the assembly tolerance of the connector socket and the circuit board, the size tolerance of the cover, and the positioning tolerance of the connection between the cover and the shell body. The cumulative tolerances of this series of tolerances make it difficult to control the gap between the connector socket and the sidewall of the opening. When the size of the opening on the cover and the connector socket are adapted to meet the protection level requirement, due to the cumulative tolerances of the size chain, it is difficult for the connector socket to be inserted into the opening. Even in some cases, when the connector socket is inserted into the opening, it often causes one sidewall of the opening to abut against the connector socket, which causes the connector socket to interfere with the cover. The stress of the connector socket against the cover easily causes the circuit board and the welding part at the root of the connector socket to fall off, which affects the performance of the electric control assembly. Therefore, the size of the opening is often set to be larger than the outer circumferential size of the connector socket, which makes it difficult for the electric control assembly to meet the set protection level requirement.

[0090] Based on the above considerations, in order to improve the problem that the gap between the connector socket and the side wall of the corresponding opening on the shell is difficult to control in the related art, and the electric control assembly is difficult to meet the set protection level requirement, an embodiment of the present application provides a battery device. By providing a covering structure on the shell of the electric control assembly, the covering structure surrounds the connector socket and at least partially covers the gap between the connector socket and the side wall of the opening. In this way, the opening size can be made larger, the influence of the size chain tolerance on the assembly of the connector socket can be reduced, the connector socket can pass through the opening more easily, and the risk of the side wall of the opening interfering with the connector socket can be reduced. The covering structure at least partially covers the gap between the connector socket and the side wall of the opening, which can shield, reduce or close the gap between the connector socket and the side wall of the opening according to the protection level requirement, so that the electric control assembly meets the required protection level requirement.

[0091] In an embodiment of the present application, the battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging.

[0092] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead-acid battery, etc. The present application is not limited in this regard.

[0093] The technical solutions described in the embodiments of the present application are applicable to various electric devices using battery cells, such as mobile phones, portable devices, notebook computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, etc. For example, spacecraft includes airplanes, rockets, space shuttles and spacecraft, etc.

[0094] For convenience of description, an electric device is provided in an embodiment of the present application, which is taken as an example of a vehicle for description.

[0095] Please refer to FIG. 1, which is a structural schematic diagram of a vehicle 11 provided in some embodiments of the present application. The vehicle 11 can be a fuel automobile, a gas automobile or a new energy automobile, which can be a pure electric automobile, a hybrid electric automobile or a range extended automobile, etc. The vehicle 11 is internally provided with a battery device 200, which can be arranged at the bottom, the head or the tail of the vehicle 11. The battery device 200 can be used for power supply of the vehicle 11, for example, the battery device 200 can be used as an operating power source of the vehicle 11. The vehicle 11 can further include a controller 111 and a motor 112, the controller 111 being used to control the battery device 200 to supply power to the motor 112, for example, for the working power demand of the vehicle 11 during starting, navigation and driving.

[0096] In some embodiments, the battery device 200 can not only serve as the operating power source of the vehicle 11, but also serve as the driving power source of the vehicle 11, replacing or partially replacing the fuel or natural gas to provide driving power for the vehicle 11.

[0097] Please refer to FIG. 2, the embodiment of the present application provides a charging network 12, which includes a charging pile 121 and an energy storage device 14. The charging pile 121 is electrically connected with the energy storage device 14, and the energy storage device 14 is configured to provide electric energy for the charging pile 121. The charging pile 121 is electrically connected with the battery device 200 in the energy storage device 14 through a cable, and the battery device 200 can provide the electric energy stored therein to the charging pile 121. The charging pile 121 has one or more connecting devices 122, which are configured to connect with an electric equipment (such as the vehicle 11), so as to provide electric energy to the electric equipment.

[0098] The energy storage device 14 can be located inside the charging pile 121 (for example, a charging and storage integrated machine), or outside the charging pile 121.

[0099] In some embodiments, the charging network 12 can include a charging pile 121 and an energy storage system. The charging pile 121 is electrically connected with the energy storage system, and the energy storage system is configured to provide electric energy for the charging pile 121. The charging pile 121 is electrically connected with the battery device 200 in the energy storage system through a cable, and the battery device 200 can provide the electric energy stored therein to the charging pile 121.

[0100] Please refer to FIG. 3, the embodiment of the present application provides an energy storage system 13, which can include one or more energy storage devices 14 and a power conversion device 131 (Power Converter System, PCS for short). The power conversion device 131 is connected between a power generation device 132 and the energy storage device 14. The power generation device 132 is configured to generate electric energy, and the electric energy generated by the power generation device 132 can be stored into the energy storage device 14 through the power conversion device 131. As an example, the power generation device 132 can be a solar panel, a water power generation device, a fire power generation device, a wind power generation device, etc. The specific type of the power generation device 132 is not limited in the present application.

[0101] Please refer to FIG. 4, the embodiment of the present application provides an energy storage device 14, which includes one or more battery clusters to improve the voltage and capacity of the energy storage device 14. The battery cluster can include one or more battery devices 200, and the plurality of battery devices 200 are connected in series through a busbar component to improve the voltage of the energy storage device 14. When the energy storage device 14 includes a plurality of battery clusters, the plurality of battery clusters are connected in parallel to improve the capacity of the energy storage device 14.

[0102] The energy storage device 14 can be used in an energy storage power station, a wind power system, a solar power system, a mobile power system, or a temporary power supply system, etc. The energy storage device 14 can store electric energy as needed and output the electric energy at an appropriate time. For example, the energy storage device 14 can store electric energy during a low electricity consumption period and provide electric energy for relevant users or electric equipment during a high electricity consumption period. The energy storage system 13 provided by the embodiments of the present application can be any power system that needs to use the energy storage device 14.

[0103] In some embodiments, the energy storage device 14 is an energy storage cabinet. Of course, the energy storage device 14 can also be an energy storage container.

[0104] In some embodiments, the energy storage device 14 can include a cabinet body 141 and one or more battery clusters, which are accommodated in the cabinet body 141. Of course, the energy storage device 14 can also include one or more battery devices 200, which are directly accommodated in the cabinet body 141.

[0105] In some embodiments, the energy storage device 14 can include a thermal management module, a master control module, a general control module, a power distribution module, and a fire-fighting module, etc.

[0106] As an example, the thermal management module can include a liquid cooling unit, which provides cooling liquid for adjusting the temperature of the battery monomer through a pipeline to each battery device 200.

[0107] As an example, the master control module can serve as a battery management unit of the battery cluster, for monitoring and managing the battery cluster. The master control module can monitor information such as current, voltage, power, or temperature of the battery cluster. For example, the charging and discharging current and voltage of the battery cluster can be controlled. The master control module includes a slave battery management unit (SBMU), a fusion switch, and other modules.

[0108] As an example, the general control module can serve as a battery management unit of the energy storage device 14, for monitoring and managing the energy storage device 14. The general control module can monitor information such as current, voltage, power, state of charge, or temperature of the energy storage device 14. For example, the charging and discharging current and voltage of the energy storage device 14 can be controlled. As an example, the general control module includes an insulation monitoring module (IMM), a master battery management unit (MBMU), an Ethernet (ETH) and fiber conversion module, and other modules.

[0109] As an example, the fire module includes a control panel, a detector, an alarm device, etc. for detecting, alarming or extinguishing the energy storage system 13.

[0110] As an example, the power distribution module can be used to distribute power to the modules in the energy storage device 14 that require power.

[0111] Referring to FIG. 5, an embodiment of the present application provides a battery apparatus 200. The battery apparatus 200 can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells 300 connected in series, in parallel or in a mixed connection through a busbar.

[0112] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells 300.

[0113] As an example, the battery cell assembly can be a battery module formed by arranging and fixing a plurality of battery cells 300 into a single module. As an example, the battery module can be formed by bundling a plurality of battery cells 300 with a cable tie.

[0114] In some embodiments, the battery apparatus 200 can be a battery pack including a case 20 and one or more battery cell assemblies received in the case 20.

[0115] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be received in the case 20 by fixing the battery module in the case 20.

[0116] As an example, the battery cell assembly can also be received in the case 20 by directly fixing a plurality of battery cells 300 in the case 20.

[0117] In some embodiments, the case 20 can include a top cover 21, a frame 23 and a bottom plate 22. The top cover 21 and the bottom plate 22 are respectively connected to opposite sides of the frame 23, so that an enclosed space is formed inside the case 20 to receive the battery cells 300. The frame 23 refers to a partial structure forming a peripheral side wall of the case 20, the top cover 21 refers to a plate-shaped structure forming a top portion of the case 20, and the bottom plate 22 refers to a plate-shaped structure forming a bottom portion of the case 20.

[0118] In some embodiments, the case 20 can include a first case and a second case, which are fastened together so that an enclosed space is formed inside the case 20 to accommodate the battery cells 300. The enclosed here means covered or closed, which can be sealed or unsealed. The first case can be a top cover or a bottom plate of the case 20. The first case and the second case can also be hollow structures each having an open side, and the open side of the first case is covered on the open side of the second case.

[0119] In some embodiments, the case 20 includes a reinforcing beam 24 connected with the frame 23. The reinforcing beam 24 refers to a structural member provided on the case 20 to increase the structural strength of the case 20. The reinforcing beam 24 is provided and connected with the frame 23 to increase the structural strength of the case 20.

[0120] In some embodiments, the reinforcing beam 24 includes a mounting beam 242 fixedly connected with the frame 23 to connect an external device using the battery device 200 to support the battery device 200 on the device.

[0121] In some embodiments, the reinforcing beam 24 includes an expansion beam 2 installed inside the case 20 to increase the structural strength of the case 20, and can also be used to resist the battery cells 300 to limit the expansion deformation of the battery cells 300.

[0122] In some embodiments, the expansion beam 2 can also be connected with the bottom plate 22 of the case 20 to better fix the expansion beam 2 in the case 20.

[0123] In some embodiments, the battery device 200 includes an electric control assembly 400, which refers to a device in the battery device 200 for monitoring and controlling the charging and discharging of the battery cells 300. The electric control assembly 400 can be a battery management system (BMS), which is a core component responsible for monitoring and managing the state of the battery cells 300. Its main functions include: monitoring the voltage, current, temperature and other parameters of the battery cells 300 in real time to ensure that the battery is in a safe working state; balancing the power of each battery cell 300 in the battery cell assembly through active or passive methods to extend the service life of the battery; controlling and regulating the temperature of the battery cells 300 to avoid performance degradation or safety risks caused by overheating or overcooling; detecting faults in the battery cell assembly and the BMS itself, and taking appropriate protective measures such as power cut-off and alarm. The electric control assembly 400 can also be a battery monitoring unit (BMU), which is mainly responsible for monitoring the voltage, current and temperature of the battery cells.

[0124] In some embodiments, the electric control assembly 400 can be arranged in the box 20 to be supported and protected by the box 20.

[0125] As an example, the electric control assembly 400 can also be arranged outside the box 20 and connected to the battery cell 300, sensors and other devices in the box 20 through wires.

[0126] In some embodiments, the box 20 can be part of the chassis structure of the vehicle. For example, part of the box 20 can be at least part of the floor of the vehicle, or part of the box 20 can be at least part of the cross beam and longitudinal beam of the vehicle.

[0127] Referring to FIGS. 5-10, according to some embodiments of the present application, a battery device 200 is provided, which includes a battery cell 300 and an electric control assembly 400 electrically connected to the battery cell 300. The electric control assembly 400 includes a housing 40, a circuit board 51 and a covering structure 53. The housing 40 is provided with a receiving cavity 401; the circuit board 51 is installed in the receiving cavity 401, and the circuit board 51 is provided with a connector socket 52; the housing 40 is provided with an opening 402 for the connector socket 52 to extend out of; the covering structure 53 is arranged around the connector socket 52, and the covering structure 53 is arranged on the housing 40 and at least partially covers a gap 403 between the connector socket 52 and the side wall of the opening 402.

[0128] The housing 40 refers to the structure forming the outer shell of the electric control assembly 400. The receiving cavity 401 refers to the receiving space formed inside the housing 40. The housing 40 can be made of metal material, plastic, fiber, ceramic or other materials.

[0129] The opening 402 refers to the through structure provided on the housing 40. The receiving cavity 401 is connected to the outside through the opening 402.

[0130] The circuit board 51, also known as a printed circuit board (PCB), is an important component in electronic products that connects electronic components. It is made of insulating material (such as glass fiber reinforced resin) and has conductive paths (copper foil lines) attached to it by etching or other means, which are used to provide electrical connections between electronic components.

[0131] The connector socket 52 refers to the socket part of the connector structure to connect with the connector plug.

[0132] The connector socket 52 is arranged on the circuit board 51 to be connected to the circuit board 51, supported by the circuit board 51, and electrically connected to the circuit board 51.

[0133] The circuit board 51 is placed in the accommodating cavity 401, and is supported and protected by the shell 40. Correspondingly, the connector socket 52 on the circuit board 51 extends out of the opening 402 to be connected with the connector plug.

[0134] In order to facilitate the connector socket 52 to extend out of the opening 402, the size of the opening 402 is made larger than that of the connector socket 52. When the connector socket 52 extends out of the opening 402 of the shell 40, a gap 403 is formed between the connector socket 52 and the side wall of the opening 402.

[0135] The covering structure 53 refers to a structure for shielding or covering the gap 403 between the connector socket 52 and the side wall of the opening 402. The covering structure 53 is arranged on the shell 40 and is supported and fixed by the shell 40. The covering structure 53 is arranged around the connector socket 52, so that the covering structure 53 can shield at least part of the gap 403 around the connector socket 52, that is, the covering structure 53 can reduce or close the gap 403 between the connector socket 52 and the side wall of the opening 402. The gap 403 is shielded or closed by the covering structure 53, so that the size of the opening 402 can be made larger, so that the connector socket 52 can easily extend out of the opening 402, the interference of the side wall of the opening 402 with the connector socket 52 is reduced, and assembly is facilitated, so that the influence of the size chain tolerance on the assembly of the connector socket 52 is reduced. The covering structure 53 is arranged to shield the gap 403 according to the need of the protection level, so as to adjust the size of the gap 403 around the connector socket 52, so as to meet the need of the protection level. For example, the width of the gap 403 around the connector socket 52 can be less than or equal to 1mm by the covering structure 53, so as to meet the need of the protection level IP40.

[0136] In the technical scheme of the embodiment, the covering structure 53 is arranged on the shell 40 and is supported by the shell 40. The covering structure 53 is arranged around the connector socket 52 and at least partially covers the gap 403 between the connector socket 52 and the side wall of the opening 402. Therefore, the gap 403 between the connector socket 52 and the side wall of the opening 402 can be shielded, reduced or closed according to the need of the protection level, so that the electric control assembly 400 meets the need of the required protection level. In addition, the size of the opening 402 can be made larger, so that the connector socket 52 can pass through the opening 402, the influence of the size chain tolerance on the assembly of the connector socket 52 is reduced, and the risk of the interference of the side wall of the opening 402 with the connector socket 52 is reduced.

[0137] In some embodiments, referring to Figs. 9-14, the covering structure 53 comprises an elastic member 531, one side of the elastic member 531 is connected to the housing 40, and the other side of the elastic member 531 at least partially covers the gap 403.

[0138] The elastic member 531 refers to a structure member with elasticity, that is, in the case of extruding the elastic member 531, the elastic member 531 will elastically deform along the extrusion direction, and the length along the extrusion direction will become smaller, such as the maximum change in length of the elastic member 531 along the extrusion direction can be greater than 5% of its length, and in the case of disappearance of the extrusion force, the elastic member 531 can elastically reset. In the case of being subjected to a tensile force, the elastic member 531 will produce tensile deformation, and its length will become longer in the direction of the tensile force, and in the case of disappearance of the tensile force, the elastic member 531 can elastically reset. The elastic member 531 can be made of rubber, silicone or other materials.

[0139] One side of the elastic member 531 is connected to the housing 40, such as the elastic member 531 being connected to the housing 40 by adhesion, or the elastic member 531 being connected to the housing 40 by a fastener such as a screw. The other side of the elastic member 531 at least partially covers the gap 403 to reduce the size of the gap 403 to meet the required protection level requirements. The covering structure 53 uses the elastic member 531, and through the elasticity of the elastic member 531, the problem of tolerance accumulation of the size chain can be weakened, and the production qualification rate can be improved.

[0140] Using the elastic member 531, one side of the elastic member 531 is connected to the housing 40 to facilitate supporting the elastic member 531 by the housing 40, and the other side of the elastic member 531 at least partially covers the gap 403 between the connector socket 52 and the side wall of the opening 402, which can facilitate assembly, and in particular due to the elastic deformation characteristics of the elastic member 531, the elastic member 531 can be well adapted to the gap 403 between the connector socket 52 and the side wall of the opening 402, weakening the problem of tolerance accumulation of the size chain between the components, so that the electric control assembly 400 can better meet the required protection level requirements.

[0141] In some embodiments, the elastic member 531 is arranged around the connector socket 52.

[0142] The elastic member 531 is arranged around the connector socket 52, which not only can better weaken the problem of the influence of the tolerance accumulation of the size chain on the circumference of the connector socket 52, but also can shield or close the gap 403 around the circumference of the connector socket 52 by the elastic member 531, so as to better meet the required protection level requirements.

[0143] Arranging the elastic member 531 around the connector socket 52 can better adjust the gap 403 between the circumference of the connector socket 52 and the housing 40, so that the electric control assembly 400 can meet the required protection level requirements.

[0144] As an example, the elastic member 531 is an integral structure, such as a ring or frame structure, to be arranged around the connector socket 52.

[0145] As an example, the elastic member 531 can be a plurality of pieces or blocks, each of which is arranged on one side of the connector socket 52, so that the plurality of elastic members 531 are arranged around the connector socket 52 in cooperation.

[0146] As an example, the elastic member 531 can be one or more, and the cover structure 53 can further include other structural members, such as a plate or a piece, to cooperate with the elastic member 531 to be arranged around the connector socket 52.

[0147] In some embodiments, the elastic member 531 can also be arranged on one or more sides of the connector socket 52, that is, the elastic member 531 can be arranged on at least one side of the connector socket 52 to block the gap 403 on the corresponding side of the connector socket 52 by the elastic member 531, so that the corresponding side of the connector socket 52 meets the required protection level requirement. That is, the elastic member 531 is arranged on at least one side of the connector socket 52, one side of the elastic member 531 is connected to the housing 40, and the other side of the elastic member 531 covers at least part of the gap 403 on the corresponding side of the connector socket 52.

[0148] As an example, the elastic member 531 can be arranged on one side of the connector socket 52 to block the gap 403 on that side of the connector socket 52, and the corresponding gap 403 on the other side of the connector socket 52 can be blocked or sealed using a plate, sealant, or other structure.

[0149] As an example, one side of the elastic member 531 is connected to the housing 40, and the other side of the elastic member 531 covers part of the gap 403 on the corresponding side of the connector socket 52, that is, the other side of the elastic member 531 is spaced apart from the corresponding side of the connector socket 52 to meet the spacing requirement of the set protection level.

[0150] As an example, one side of the elastic member 531 is connected to the housing 40, and the other side of the elastic member 531 covers the entire gap 403 on the corresponding side of the connector socket 52, such as the other side of the elastic member 531 being connected to or abutting against the corresponding side of the connector socket 52.

[0151] The elastic member 531 is arranged on at least one side of the connector socket 52, which can block the gap 403 on the corresponding side of the connector socket 52 by the elastic member 531, so that the corresponding side of the connector socket 52 meets the required protection level requirement.

[0152] In some embodiments, referring to FIG. 13, the elastic member 531 is connected to a hard member 532 on one side close to the connector socket 52.

[0153] The rigid piece 532 refers to a structural piece made of a rigid material, that is, in the case of extruding the rigid piece 532, the rigid piece 532 does not elastically deform or slightly deform along the extrusion direction, that is, the length of the rigid piece 532 along the extrusion direction does not change or the length of the rigid piece 532 along the extrusion direction changes less than 5% of the length. The rigid piece 532 can be a sheet, a block, etc. The rigid piece 532 can be made of metal, plastic, hard rubber, etc.

[0154] The combination of the rigid piece 532 and the elastic piece 531 can achieve an elastic expansion structure to weaken the size tolerance accumulation between components. The provision of the rigid piece 532 can also improve the structural strength, as long as the side surface of the connector socket 52 is well adapted to the rigid piece 532, which facilitates production and improves the pass rate.

[0155] In some embodiments, referring to FIG. 13, the rigid piece 532 extends between the connector socket 52 and the side wall of the opening 402.

[0156] The extension of the rigid piece 532 between the connector socket 52 and the side wall of the opening 402 means that the rigid piece 532 can extend into the gap 403 between the connector socket 52 and the side wall of the opening 402 to block or close the gap 403.

[0157] The extension of the rigid piece 532 between the connector socket 52 and the side wall of the opening 402 can better block the gap 403 between the connector socket 52 and the side wall of the opening 402 to adjust the size of the gap 403, so that the electric control assembly 400 meets the required protection level requirements.

[0158] As an example, the rigid piece 532 can also be located outside the housing 40 to block the gap 403, so that the position of the rigid piece 532 is set.

[0159] In some embodiments, referring to FIG. 13, the rigid piece 532 and the elastic piece 531 are integrally injection molded.

[0160] The integrally injection molding of the rigid piece 532 and the elastic piece 531 means that the rigid piece 532 and the elastic piece 531 are integrally formed by double-color injection molding to connect and fix the rigid piece 532 and the elastic piece 531.

[0161] The integrally injection molding of the rigid piece 532 and the elastic piece 531 facilitates the connection of the rigid piece 532 and the elastic piece 531 and facilitates processing and manufacturing.

[0162] As an example, the rigid piece 532 and the elastic piece 531 can also be connected by adhesion.

[0163] As an example, the rigid piece 532 and the elastic piece 531 can also be connected by a fastener such as a pin.

[0164] In some embodiments, referring to FIG. 13, the hard material 532 has an inner hole 5321, and the connector socket 52 passes through the inner hole 5321, so that the hard material 532 is adapted to be sleeved on the connector socket 52.

[0165] The inner hole 5321 refers to a through hole structure provided in the hard material 532. The inner hole 5321 is provided on the hard material 532 so as to sleeve the hard material 532 on the connector socket 52. The hard material 532 and the connector socket 52 are adapted to be sleeved, so that the hard material 532 shields the gap 403 on the side of the connector socket 52, so as to meet the required protection level requirement.

[0166] The hard material 532 is provided with the inner hole 5321, so that the hard material 532 as a whole forms a sleeve structure or a frame structure adapted to the shape of the connector socket 52, and is sleeved on the connector socket 52. As long as the contour of the connector socket 52 and the size of the inner hole 5321 of the hard material 532 are controlled during production, the assembly gap 403 can be well controlled when the hard material 532 is sleeved on the connector socket 52, the production efficiency is high, and the product qualification rate is improved.

[0167] In some embodiments, referring to FIG. 13, the difference between the distance d1 between the opposite two side walls of the inner hole 5321 and the distance d2 between the corresponding opposite two sides of the connector socket 52 is less than or equal to 1 mm.

[0168] The distance d1 between the opposite two side walls of the inner hole 5321 refers to the distance between the side walls of the opposite two sides in any direction perpendicular to the depth of the inner hole 5321.

[0169] The distance d2 between the corresponding opposite two sides of the connector socket 52 refers to the distance between the opposite two sides in the same direction as the opposite two side walls of the inner hole 5321.

[0170] Making the difference between the distance d1 between the opposite two side walls of the inner hole 5321 and the distance d2 between the corresponding two sides of the connector socket 52 less than or equal to 1 mm can make the electric control assembly 400 meet the requirement of protection level IP40.

[0171] In some embodiments, the difference between the distance d1 between the opposite two side walls of the inner hole 5321 and the distance d2 between the corresponding opposite two sides of the connector socket 52 is set to other values to meet the requirement of the required protection level.

[0172] In some embodiments, the hard material 532 is a plurality of hard materials 532, and the plurality of hard materials 532 are cooperatively arranged around the connector socket 52.

[0173] The plurality of hard materials 532 are combined to cooperatively surround the connector socket 52, which is convenient for design, and the plurality of hard materials 532 can be called according to the need to adapt to connector sockets 52 of different shapes.

[0174] In some embodiments, the elastic member 531 can abut against the hard member 532, so that the hard member 532 abuts against the connector socket 52, and the gap 403 between the side wall of the connector socket 52 and the side wall of the opening 402 is small, so as to meet the required protection level requirement.

[0175] For example, at least one side of the connector socket 52 is provided with the hard member 532, such as one or more sides of the connector socket 52 are provided with the hard member 532, and the other sides of the connector socket 52 can be provided with the elastic member 531 or the sheet-shaped member or other covering structure 53 alone, so as to cooperate with the hard member 532 to shield the gap 403 between the side wall of the connector socket 52 and the side wall of the opening 402, so as to meet the set protection level requirement.

[0176] In some embodiments, referring to FIGS. 5-12 and 14, the elastic member 531 elastically abuts against the connector socket 52.

[0177] The elastic member 531 abutting against the connector socket 52 can well close the gap 403 between the connector socket 52 and the side wall of the opening 402, so that the electric control assembly 400 meets the required protection level requirement.

[0178] For example, the elastic member 531 can also be arranged separately from the connector socket 52, so that the size and position of the elastic member 531 can be set as required to meet the required protection level requirement.

[0179] In some embodiments, referring to FIGS. 5-12 and 14, the elastic member 531 is provided with an opening 5310 for the connector socket 52 to pass through.

[0180] The opening 5310 refers to a through hole structure provided in the elastic member 531.

[0181] The opening 5310 provided in the elastic member 531 can be sleeved on the connector socket 52, so that the gap 403 between the side wall of the connector socket 52 and the side wall of the opening 402 can be conveniently adjusted, so as to better make the electric control assembly 400 meet the required protection level requirement.

[0182] In some embodiments, the covering structure 53 includes the elastic member 531, one side of the elastic member 531 is connected to the shell 40, and the other side of the elastic member 531 is connected to the side wall of the connector socket 52.

[0183] In some embodiments, when the covering structure 53 includes the elastic member 531 and the hard member 532, the hard member 532 can be arranged on the side of the elastic member 531 close to the connector socket 52.

[0184] In some embodiments, the covering structure 53 comprises an elastic member 531 and a hard member 532. The hard member 532 can be arranged in the opening 5310 of the elastic member 531, and close to one side of the connector socket 52.

[0185] In some embodiments, referring to FIGS. 9-12, the elastic member 531 is a rubber ring.

[0186] The rubber ring refers to a ring-shaped or frame-shaped structure with elasticity, such as a rubber ring or a sealing ring.

[0187] The elastic member 531 uses a rubber ring, which is low in cost and easy to assemble.

[0188] In some embodiments, referring to FIG. 14, the elastic member 531 is an elastic film.

[0189] The elastic film refers to a film member made of an elastic material, which can be rubber, silicone, polyurethane, etc.

[0190] The elastic member 531 uses an elastic film, which is low in cost and only needs a simple opening 5310. The size precision requirement of the opening 5310 is low, and the elastic member 531 is easy to be sleeved on the connector socket 52.

[0191] In some embodiments, referring to FIGS. 5-11 and 14, the elastic member 531 is adhesively connected to the shell 40.

[0192] The elastic member 531 is adhesively connected to the shell 40 to facilitate the assembly of the elastic member 531, and the elastic member 531 is supported by the shell 40.

[0193] For example, the elastic member 531 and the shell 40 can be adhesively connected by glue.

[0194] For example, the elastic member 531 and the shell 40 can be adhesively connected by double-sided tape 54.

[0195] In some embodiments, referring to FIGS. 12 and 13, the elastic member 531 and the shell 40 are integrally injection molded.

[0196] The elastic member 531 and the shell 40 are integrally injection molded, which means that the shell 40 and the elastic member 531 are integrally injection molded by double-color injection molding, so as to connect and fix the shell 40 and the elastic member 531.

[0197] The elastic member 531 and the shell 40 are integrally injection molded, which facilitates the good fixation of the elastic member 531 and the shell 40, and facilitates the processing and manufacturing.

[0198] In some embodiments, referring to FIGS. 9-11, the elastic member 531 includes a connecting portion 5311 and an extending portion 5312. The connecting portion 5311 is connected to the shell 40 on one side. The extending portion 5312 is connected to the connecting portion 5311 on a side close to the connector socket 52. The extending portion 5312 extends along the thickness direction of the connecting portion 5311.

[0199] The connecting portion 5311 refers to the part of the elastic member 531 connected to the shell 40. The connecting portion 5311 is provided to facilitate the connection of the elastic member 531 to the shell 40.

[0200] The extending portion 5312 refers to the part of the elastic member 531 located at the position corresponding to the gap 403. The extending portion 5312 is provided to shield or close the gap 403 between the connector socket 52 and the side wall of the opening 402.

[0201] The extending portion 5312 is connected to the connecting portion 5311 on a side close to the connector socket 52. The extending portion 5312 can be connected to the connecting portion 5311 by adhesion, or by fasteners such as screws. Alternatively, the extending portion 5312 and the connecting portion 5311 can be integrally formed.

[0202] The extending portion 5312 extends along the thickness direction of the connecting portion 5311, towards one side of the connecting portion 5311, or towards opposite sides of the connecting portion 5311. When the extending portion 5312 extends along the thickness direction of the connecting portion 5311, towards one side of the connecting portion 5311, the cross section of the elastic member 531 is L-shaped. When the extending portion 5312 extends along the thickness direction of the connecting portion 5311, towards opposite sides of the connecting portion 5311, the cross section of the elastic member 531 is T-shaped. The cross section of the elastic member 531 refers to the cross section along the thickness direction of the connecting portion 5311.

[0203] The connecting portion 5311 is provided to connect the elastic member 531 to the shell 40. The extending portion 5312 is provided to extend towards one side or opposite sides of the connecting portion 5311, which can increase the structural strength of the extending portion 5312 along the thickness direction of the connecting portion 5311, so as to shield the gap 403 between the connector socket 52 and the side wall of the opening 402, improve the product qualification rate, and make the electric control assembly 400 meet the required protection level requirements.

[0204] In some embodiments, referring to FIG. 9, the connecting portion 5311 is connected to the side of the shell 40 away from the circuit board 51.

[0205] The circuit board 51 is installed in the shell 40, and opposite surfaces of the circuit board 51 are respectively an inner surface and an outer surface of the shell 40. The inner surface of the shell 40 is a surface of the shell 40 facing the circuit board 51, and the outer surface of the shell 40 is a surface of the shell 40 facing away from the circuit board 51.

[0206] The connecting portion 5311 is connected to the surface of the shell 40 facing away from the circuit board 51, facilitating assembly of the elastic member 531, in particular, facilitating assembly of the elastic member 531 after the connector socket 52 extends out of the opening 402 of the shell 40, and facilitating installation of the elastic member 531.

[0207] In some embodiments, referring to FIG. 11, the connecting portion 5311 is connected to the surface of the shell 40 facing the circuit board 51.

[0208] Connecting the connecting portion 5311 to the surface of the shell 40 facing the circuit board 51 allows the elastic member 531 to be assembled with the shell 40 first, and then the connector socket 52 is assembled with the shell 40, facilitating overall assembly of the electric control assembly 400.

[0209] In some embodiments, referring to FIGS. 5 to 11, the covering structure 53 is adhesively connected to the side wall of the connector socket 52.

[0210] The covering structure 53 is adhesively connected to the side wall of the connector socket 52, for example, the covering structure 53 and the side wall of the connector socket 52 are connected by double-sided adhesive tape 54, and of course, the covering structure 53 and the side wall of the connector socket 52 can also be connected by adhesive liquid.

[0211] For example, when the covering structure 53 includes the elastic member 531, the elastic member 531 can be adhesively connected to the side wall of the connector socket 52.

[0212] For example, when the elastic member 531 includes the extension portion 5312, the extension portion 5312 can be adhesively connected to the side wall of the connector socket 52.

[0213] For example, when the covering structure 53 includes the rigid member 532, the rigid member 532 can be adhesively connected to the side wall of the connector socket 52.

[0214] For example, when the covering structure 53 includes a sheet member or a plate member, the corresponding sheet member or plate member can be adhesively connected to the side wall of the connector socket 52.

[0215] Adhesively connecting the covering structure 53 to the side wall of the connector socket 52 can effectively seal the gap 403 between the connector socket 52 and the side wall of the opening 402, so that the electric control assembly 400 meets the required protection level requirement.

[0216] In some embodiments, referring to FIG. 15, the covering structure 53 comprises a sealant 533 filled in the gap 403.

[0217] The sealant 533 refers to a glue that can seal the space between the two adjacent side surfaces after curing.

[0218] The use of the sealant 533 can well seal the gap 403 between the connector socket 52 and the sidewall of the opening 402, so that the electric control assembly 400 meets the required protection level requirements.

[0219] In some embodiments, referring to FIG. 16, the covering structure 53 comprises a covering body 534 connected to the shell 40, and the covering body 534 at least partially covers the gap 403.

[0220] The covering body 534 refers to a plate or sheet member used to shield the gap 403 between the connector socket 52 and the sidewall of the opening 402. The covering body 534 can be made of metal, plastic, rubber, etc.

[0221] The use of the covering body 534 can shield the gap 403 between the connector socket 52 and the sidewall of the opening 402 through the covering body 534, so that the electric control assembly 400 meets the required protection level requirements.

[0222] In some embodiments, the covering structure 53 can comprise the elastic member 531 and the sealant 533, and the sealant 533 can be filled in the gap 403 between the connector socket 52 and the sidewall of the opening 402 when the elastic member 531 shields at least part of the gap 403.

[0223] In some embodiments, the covering structure 53 can comprise the covering body 534 and the sealant 533, and the sealant 533 can be filled in the gap 403 between the connector socket 52 and the sidewall of the opening 402 when the covering body 534 shields at least part of the gap 403.

[0224] In some embodiments, the covering structure 53 can comprise the elastic member 531, the covering body 534 and the sealant 533, the elastic member 531 can be connected to the inner surface of the shell 40, the covering body 534 can be connected to the outer surface of the shell 40, and the sealant 533 can be filled in the gap 403 between the connector socket 52 and the sidewall of the opening 402.

[0225] In some embodiments, the covering structure 53 can comprise the elastic member 531, the covering body 534 and the sealant 533, and the elastic member 531, the covering body 534 and the sealant 533 can cooperate to shield or block the gap 403 around the side of the connector socket 52.

[0226] In some embodiments, referring to FIGS. 6-8, the pins 521 of the connector socket 52 are connected to the circuit board 51 by means of surface mount soldering.

[0227] The pins 521 of the connector socket 52 are connected to the circuit board 51 by means of surface mount soldering, which means that the pins 521 of the connector socket 52 are connected to the corresponding soldering pins on the circuit board 51 by means of surface mount soldering.

[0228] The pins 521 of the connector socket 52 are connected to the circuit board 51 by means of surface mount soldering, which means that the pins 521 of the connector socket 52 are connected to the corresponding soldering pins on the circuit board 51 by means of surface mount soldering.

[0229] In some embodiments, a through hole can also be provided at the corresponding soldering pin position of the circuit board 51, and the pins 521 of the connector socket 52 adopt a pin structure to be inserted into the corresponding through hole and then soldered and connected.

[0230] In some embodiments, the shell 40 includes a first shell 41 and a second shell 42, and the first shell 41 and the second shell 42 form a containing cavity 401; the first shell 41 is provided with an opening 402, and / or the second shell 42 is provided with an opening 402, and / or the first shell 41 and the second shell 42 are provided with an opening 402 in cooperation.

[0231] The first shell 41 refers to a shell structure that forms part of the structure of the shell 40. The second shell 42 refers to a shell structure that forms the entire shell 40 in combination with the first shell 41. The first shell 41 can be made of metal material, plastic, ceramic, rubber, etc. The second shell 42 can be made of metal material, plastic, ceramic, rubber, etc.

[0232] As an example, the first shell 41 can be a concave cavity with one side open, and the second shell 42 can be a plate-shaped structure to cover the concave cavity, so that the concave cavity forms the containing cavity 401 of the shell 40. As an example, the second shell 42 can be a concave cavity with one side open, and the first shell 41 can be a plate-shaped structure to cover the concave cavity, so that the concave cavity forms the containing cavity 401 of the shell 40. As an example, the first shell 41 and the second shell 42 can both be concave cavities with one side open, and the open sides of the first shell 41 and the second shell 42 are buckled to each other to form the shell 40, and the two concave cavities are combined to form the containing cavity 401.

[0233] As an example, when there is only one opening 402, the opening 402 can be provided only on the first shell 41; the opening 402 can also be provided on the second shell 42; of course, part of the opening 402 can be provided on the first shell 41, and the other part of the opening 402 can be provided on the second shell 42, i.e., the opening 402 is provided at the connection position of the first shell 41 and the second shell 42.

[0234] As an example, in the case of multiple openings 402, the openings 402 can be provided on the first housing 41 only. The openings 402 can also be provided on the second housing 42 only. Of course, a part of the openings 402 can be provided on the first housing 41 and another part of the openings 402 can be provided on the second housing 42, i.e. the openings 402 can be provided at the connecting position of the first housing 41 and the second housing 42.

[0235] As an example, in the case of multiple openings 402, the openings 402 can be provided on the first housing 41 and the second housing 42. Of course, the openings 402 can also be provided on the first housing 41, the second housing 42 and the connecting position of the first housing 41 and the second housing 42. The multiple openings 402 refer to two or more openings 402.

[0236] The above-mentioned housing 40 is simple in structure, convenient to manufacture and assemble, and convenient to assemble the circuit board 51.

[0237] In some embodiments, the housing 40 includes the first housing 41 and the second housing 42, the covering structure 53 includes the elastic member 531, and the elastic member 531 is integrally formed with the housing 40 by injection molding. The elastic member 531 corresponding to the opening 402 on the first housing 41 is integrally formed with the first housing 41 by injection molding, and the elastic member 531 corresponding to the opening 402 on the second housing 42 is integrally formed with the second housing 42 by injection molding.

[0238] In some embodiments, the connector socket 52 can have a rectangular shape, a circular shape or the like. The specific shape can be selected as required.

[0239] In some embodiments, one connector socket 52 can be provided on the circuit board 51. Of course, multiple connector sockets 52 can also be provided on the circuit board 51. The multiple connector sockets 52 refer to two or more connector sockets 52.

[0240] In some embodiments, the connector sockets 52 are multiple, and at least the covering structures 53 corresponding to adjacent two connector sockets 52 are integrally connected.

[0241] The at least adjacent two connector sockets 52 refer to two adjacent connector sockets 52 or three adjacent connector sockets 52 or the like in the multiple connector sockets 52. Of course, any two adjacent connector sockets 52 in the multiple connector sockets 52 can also be connected. The multiple connector sockets 52 can also be grouped, and each group can include one or more connector sockets 52. When the connector sockets 52 in a group are multiple, the connector sockets 52 can be arranged adjacently.

[0242] At least the covering structures 53 corresponding to the adjacent two connector sockets 52 are connected into one body, which means that the covering structures 53 corresponding to the adjacent two or more connector sockets 52 are connected into one body, or the covering structures 53 corresponding to any adjacent two connector sockets 52 in the plurality of connector sockets 52 are connected into one body, or the plurality of connector sockets 52 are grouped, and the covering structures 53 corresponding to the plurality of connector sockets 52 in each group are connected into one body.

[0243] At least the covering structures 53 corresponding to the adjacent two connector sockets 52 are connected into one body, which means that the covering structures 53 corresponding to the adjacent two or more connector sockets 52 are connected into one body, or the covering structures 53 corresponding to any adjacent two connector sockets 52 in the plurality of connector sockets 52 are connected into one body, or the plurality of connector sockets 52 are grouped, and the covering structures 53 corresponding to the plurality of connector sockets 52 in each group are connected into one body.

[0244] At least the covering structures 53 corresponding to the adjacent two connector sockets 52 are connected into one body, which means that the covering structures 53 corresponding to the adjacent two or more connector sockets 52 are connected into one body, or the covering structures 53 corresponding to any adjacent two connector sockets 52 in the plurality of connector sockets 52 are connected into one body, or the plurality of connector sockets 52 are grouped, and the covering structures 53 corresponding to the plurality of connector sockets 52 in each group are connected into one body.

[0245] As an example, when the plurality of connector sockets 52 are provided, the covering structures 53 corresponding to the adjacent two or more connector sockets 52 can also be arranged at intervals.

[0246] In some embodiments, the mounting hole 43 can be arranged on the shell 40, so as to connect the shell 40 with a support medium, and then connect the electric control assembly 400 with the support medium through bolts or other fasteners. The support medium can be the box body 20 or an external support. The mounting hole 43 refers to a through hole structure arranged on the shell 40.

[0247] As an example, when the shell 40 includes the first shell 41 and the second shell 42, the mounting hole 43 can be arranged on the first shell 41, or arranged on the second shell 42, or arranged at the connection position of the first shell 41 and the second shell 42, so that the mounting hole 43 penetrates through the first shell 41 and the second shell 42.

[0248] According to some embodiments of the present application, the present application provides a battery device 200, which includes a battery cell 300 and an electric control assembly 400 electrically connected with the battery cell 300. The electric control assembly 400 includes a shell 40, a circuit board 51 and a covering structure 53. The shell 40 is internally provided with a receiving cavity 401; the circuit board 51 is installed in the receiving cavity 401, and the circuit board 51 is provided with a connector socket 52; the shell 40 is provided with an opening 402 for the connector socket 52 to extend out; and the covering structure 53 includes an elastic member 531, the elastic member 531 is provided with an opening 5310, the elastic member 531 is a rubber ring, the rubber ring is arranged around the connector socket 52, and one side of the rubber ring is adhesively connected with the shell 40, and the other side of the rubber ring is adhesively connected with the peripheral side of the connector socket 52.

[0249] The cover structure 53 uses a rubber ring, which is arranged around the connector socket 52, and one side of the rubber ring is bonded to the shell 40, and the other side of the rubber ring is bonded to the peripheral side of the connector socket 52, so that the rubber ring seals the gap 403 on the peripheral side of the connector socket 52, so that the electric control assembly 400 meets the required protection level requirements.

[0250] According to some embodiments of the present application, the present application also provides an energy storage device 14, comprising the battery device 200 as described in the above embodiments, which is used to store or provide electric energy.

[0251] According to some embodiments of the present application, the present application also provides an energy storage system 13, comprising a power conversion device 131 and an energy storage device 14 as described in the above embodiments, wherein the power conversion device 131 is electrically connected between the power generation device 132 and the energy storage device 14.

[0252] According to some embodiments of the present application, the present application also provides an electric device, comprising the battery device 200 as described in the above embodiments, the energy storage device 14 as described in the above embodiments, or the energy storage system 13 as described in the above embodiments, wherein the battery device 200 is used to store or provide electric energy.

[0253] According to some embodiments of the present application, the present application also provides a charging network 12, comprising a charging pile 121 and an energy storage device 14 as described in the above embodiments or an energy storage system 13 as described in the above embodiments, wherein the energy storage device 14 is used to provide electric energy for the charging pile 121.

[0254] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, wherein, The battery device comprises a battery cell and an electric control assembly electrically connected with the battery cell, wherein the electric control assembly comprises: a circuit board provided with a connector socket; a housing provided with a receiving cavity in which the circuit board is arranged, and the housing is provided with an opening through which the connector socket extends; a covering structure arranged on the housing and surrounding the connector socket, and the covering structure at least partially covers the gap between the connector socket and the side wall of the opening.

2. The battery device of claim 1, wherein, The covering structure comprises an elastic member, one side of the elastic member is connected with the housing, and the other side of the elastic member at least partially covers the gap.

3. The battery device of claim 2, wherein, At least one side of the connector socket is provided with the elastic member, one side of the elastic member is connected with the housing, and the other side of the elastic member covers at least part of the gap on the corresponding side of the connector socket.

4. The battery device of claim 2 or 3, wherein, One side of the elastic member close to the connector socket is connected with a hard member.

5. The battery device of claim 4, wherein, The hard member extends to the gap between the connector socket and the side wall of the opening.

6. The battery device of claim 4 or 5, wherein, The hard member and the elastic member are integrally injection molded.

7. The battery device of any one of claims 4-6, wherein, The hard member has an inner hole through which the connector socket passes, so that the hard member is adapted to be fitted on the connector socket.

8. The battery device of claim 7, wherein, The distance between the opposite side walls of the inner hole is less than or equal to 1 mm different from the distance between the corresponding opposite sides of the connector socket.

9. The battery device of any one of claims 4-6, wherein, The hard member is a plurality of hard members which are arranged around the connector socket in cooperation.

10. The battery device of claim 2 or 3, wherein, The elastic member elastically abuts against the connector socket.

11. The battery device of claim 9, wherein, The elastic member is provided with an opening through which the connector socket passes.

12. The battery device of claim 11, wherein, The elastic member is an elastic film, or the elastic member is a rubber ring.

13. The battery device of any one of claims 2-12, wherein, The elastic member is connected with the housing by adhesion.

14. The battery device of any one of claims 2-13, wherein, The elastic member and the housing are integrally injection molded.

15. The battery device of any one of claims 2-14, wherein, The elastic member comprises a connecting portion and an extending portion, one side of the connecting portion is connected with the housing, and the extending portion is connected with one side of the connecting portion close to the connector socket, and the extending portion extends along the thickness direction of the connecting portion.

16. The battery device of claim 15, wherein, The connecting portion is connected with the side of the housing away from the circuit board, or the connecting portion is connected with the side of the housing facing the circuit board.

17. The battery device of any one of claims 1-16, wherein, The covering structure is connected with the side wall of the connector socket by adhesion.

18. The battery device of any one of claims 1-17, wherein, The covering structure comprises a sealant filled in the gap.

19. The battery device of any one of claims 1-18, wherein, The covering structure comprises a covering body connected with the cover body, and the covering body at least partially covers the gap.

20. The battery device of any one of claims 1-19, wherein, The housing comprises a first shell and a second shell, and the first shell and the second shell surround the receiving cavity; the first shell is provided with the opening, and / or the second shell is provided with the opening, and / or the first shell and the second shell are cooperatively provided with the opening.

21. The battery device of any one of claims 1-20, wherein, The connector socket is a plurality of connector sockets, and at least two adjacent connector sockets are integrally connected with the corresponding covering structures.

22. An energy storage device, wherein, The battery device comprises the battery device according to any one of claims 1-21, and the battery device is used for storing or providing electric energy.

23. An electrical device, comprising: The battery device comprises the battery device according to any one of claims 1-21 or the energy storage device according to claim 22, and the battery device is used for storing or providing electric energy.

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