Energy storage device and power consuming device

Abstract

The application provides an energy storage device and an electric equipment. The energy storage device comprises a box body, an insulating support, a circuit board, a grounding piece, a first connecting assembly and a second connecting assembly. The insulating support, the circuit board and the grounding piece are located in the box body, and the circuit board is located on one side of the insulating support. The grounding piece comprises a first conductive part and a second conductive part which are connected with each other. The first conductive part is located between the circuit board and the insulating support, and the first connecting assembly connects the circuit board, the first conductive part and the insulating support. The second conductive part is located between the insulating support and the box body. The second connecting assembly connects the insulating support, the second conductive part and the box body. The energy storage device of the application is simple to assemble, and the grounding piece can adapt to a narrow installation space.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to an energy storage device and an electrical appliance. Background Technology

[0002] In electrical equipment such as battery modules and energy storage systems for new energy vehicles, protection boards, relays, etc. are integrated together by brackets. The brackets are then fixed to the chassis by screws through the mating holes of the rivet studs on the chassis. Furthermore, a wire harness is connected to the rivet screws on the chassis through OT terminals and then grounded by locking with anti-loosening nuts.

[0003] However, when the installation space in the chassis is limited, the above solutions are difficult to meet the requirements. Utility Model Content

[0004] Based on this, this application provides an energy storage device and an electrical appliance to address the shortcomings of related technologies.

[0005] In a first aspect, this application provides an energy storage device, which includes:

[0006] Box;

[0007] An insulating support is located inside the housing;

[0008] The circuit board is located inside the housing and on one side of the insulating support;

[0009] A grounding component, comprising a first conductive part and a second conductive part connected to each other, wherein the first conductive part is located between the circuit board and the insulating support, and the second conductive part is located between the insulating support and the housing;

[0010] A first connecting component connects the circuit board, the first conductive part, and the insulating bracket;

[0011] The second connecting assembly connects the insulating support, the second conductive part, and the housing.

[0012] In one possible implementation, the first conductive portion and the second conductive portion are located on adjacent sides of the insulating support.

[0013] In one possible implementation, the first connecting assembly includes at least two first connectors, the insulating bracket has at least two first connecting holes, the first connectors have external threads, and the first connecting holes have internal threads that mate with the first connectors.

[0014] Each of the first connectors passes through the circuit board and the first conductive part in sequence to be threadedly connected to the first connection hole one by one.

[0015] In one possible implementation, the surface of the circuit board facing the first conductive portion has a conductive layer that is in conductive contact with the first conductive portion.

[0016] In one possible implementation, the second connecting component includes a second connector and a third connector, one end of the second connector is connected to the housing, and the other end of the second connector passes through the second conductive part and the insulating support in sequence.

[0017] One of the second connector and the third connector has an internal thread, and the other has a matching external thread. The second connector is threadedly connected to the third connector.

[0018] In one possible implementation, the insulating bracket has a mounting hole, and the second connecting assembly further includes a limiting sleeve that is inserted into the mounting hole;

[0019] The second connector is inserted into the limiting sleeve. The second connector has an internal thread, and the third connector has an external thread. The third connector is inserted into the second connector and is threadedly connected to the second connector.

[0020] One end of the limiting sleeve abuts against the second conductive part, and the other end of the limiting sleeve abuts against the third connecting member.

[0021] In one possible implementation, the second connecting component further includes a gasket that abuts against the third connecting member and the limiting sleeve.

[0022] In one possible implementation, the end of the limiting sleeve facing away from the second conductive part protrudes from the end of the second connector facing away from the second conductive part in the axial direction of the limiting sleeve.

[0023] In one possible implementation, the height difference H between the end face of the limiting sleeve facing away from the second conductive part and the end face of the second connector facing away from the second conductive part satisfies 0 < H ≤ 0.22 mm.

[0024] Secondly, this application provides an electrical appliance, which includes:

[0025] The energy storage device of the first aspect mentioned above;

[0026] The electrical device is powered by the energy storage device.

[0027] The energy storage device and electrical equipment provided in this application include a housing, an insulating support, a circuit board, a grounding component, a first connecting assembly, and a second connecting assembly. The grounding component includes a first conductive part and a second conductive part. The housing integrates the insulating support and circuit board, and grounds the circuit board. The insulating support mounts the circuit board, and the circuit board controls the current and voltage of the energy storage device. The first conductive part is electrically connected to the circuit board, and the second conductive part is electrically connected to the housing. The grounding component connects the circuit board and the housing, grounding the circuit board. The first connecting assembly connects the circuit board, the first conductive part, and the insulating support, fixing the circuit board and the grounding component to the insulating support and making the first conductive part and the circuit board conductive. The second connecting assembly connects the insulating support, the second conductive part, and the housing, fixing the circuit board, the grounding component, and the insulating support into the housing and making the second conductive part conductive. The circuit board is conductive to the housing via the grounding component, which is adaptable to confined installation spaces.

[0028] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the energy storage device and electrical equipment provided by this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of the energy storage device provided in the embodiments of this application;

[0031] Figure 2 A schematic diagram of the structure of the insulating support, grounding component, circuit board and first connecting assembly in the energy storage device provided in the embodiments of this application;

[0032] Figure 3 This is a schematic diagram of the internal structure of the energy storage device provided in the embodiments of this application;

[0033] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0034] Figure 5 Another internal structure diagram of the energy storage device provided in the embodiments of this application;

[0035] Figure 6 for Figure 5 A magnified view of a section at point B in the middle;

[0036] Figure 7 for Figure 5 Another perspective illustration;

[0037] Figure 8 for Figure 7 A magnified view of a section at point C;

[0038] Figure 9 This is a schematic diagram of the grounding component in the energy storage device provided in the embodiments of this application;

[0039] Figure 10 This is a schematic diagram of the structure of the gasket in the energy storage device provided in the embodiments of this application;

[0040] Figure 11 for Figure 10 DD section view.

[0041] Explanation of reference numerals in the attached figures:

[0042] 100 - Box;

[0043] 200 - Insulating bracket; 210 - First connecting hole; 220 - Mounting hole;

[0044] 300 - Circuit Board;

[0045] 400 - Grounding component; 410 - First conductive part; 420 - Second conductive part; 430 - Positioning part;

[0046] 500 - First connecting component; 510 - First connector;

[0047] 600 - Second connecting assembly; 610 - Second connector; 620 - Third connector; 630 - Limiting sleeve; 640 - Gasket;

[0048] 700 - Fourth connector. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0050] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0051] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0052] The terms "first," "second," and "third" (if any) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0053] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or display that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or display.

[0054] In electrical equipment such as battery modules and energy storage systems for new energy vehicles, protection boards and relays are integrated together using brackets. These brackets are then secured to the chassis using screws that mate with the mounting studs on the chassis. A wiring harness is connected to the mounting screws on the chassis via OT terminals, and grounding is achieved by tightening with anti-loosening nuts. However, this solution is insufficient when installation space in the chassis is limited.

[0055] In view of the above problems, this application provides an energy storage device and an electrical device. The energy storage device achieves grounding by setting a grounding component, a first connecting component and a second connecting component to realize the connection between the circuit board and the enclosure. Moreover, the grounding component can adapt to a relatively small installation space.

[0056] The following describes in detail the specific implementation methods of the energy storage device and electrical equipment provided in the embodiments of this application, with reference to the accompanying drawings.

[0057] Reference Figures 1 to 9 As shown, the energy storage device provided in this application embodiment includes a housing 100, an insulating support, a circuit board 300, a grounding component 400, a first connecting component, and a second connecting component. The insulating support, the circuit board 300, and the grounding component 400 are all located inside the housing 100, and the circuit board 300 is located on one side of the insulating support.

[0058] The grounding component 400 includes a first conductive part 410 and a second conductive part 420 interconnected. The first conductive part 410 is located between the circuit board 300 and the insulating support 200. A first connecting assembly 500 connects the circuit board 300, the first conductive part 410, and the insulating support 200. The second conductive part 420 is located between the insulating support 200 and the housing 100. A second connecting assembly 600 connects the insulating support 200, the second conductive part 420, and the housing 100.

[0059] The energy storage device in this application embodiment can store and release electrical energy, thereby providing electrical energy to electrical devices. Furthermore, the energy storage device can also control current and voltage according to the needs of the electrical devices.

[0060] It should be noted that the energy storage device in this application embodiment may also include battery components and electrical components such as relays (not shown in the figure). The battery components are housed in the housing 100 and include multiple individual cells. The multiple individual cells are connected in series or in parallel to form a battery component with a large voltage or a large current. The relays are electrically connected to the circuit board 300 to form a control circuit. The circuit board 300 is electrically connected to the battery components, thereby managing the charging and discharging of the battery components and preventing the battery components from experiencing overcurrent, overvoltage, or overheating.

[0061] In this embodiment, the housing 100 serves as a mechanical component that carries the battery assembly, circuit board 300, etc. It can integrate the battery assembly and circuit board 300 together, thereby providing mechanical protection for the battery assembly and circuit board 300. The housing 100 can also serve as the grounding terminal of the energy storage device. That is, the relay, battery assembly, etc. are electrically connected to the circuit board 300, and the circuit board 300 is electrically connected to the housing 100, thereby enabling the electrical components to be grounded through the housing 100, thus improving the safety performance of the energy storage device.

[0062] The insulating bracket 200 can integrate electrical components such as relays, shunts and fuses, and then install these electrical components into the enclosure 100 through the insulating bracket 200. The grounding component 400 is used to connect the circuit board 300 and the enclosure 100, so that the circuit board 300 is grounded through the grounding component 400 and the enclosure 100.

[0063] Specifically, the grounding component 400 includes a first conductive part 410, which abuts against the circuit board 300 and the insulating support 200. The first connecting component 500 is used to connect the circuit board 300, the first conductive part 410 and the insulating support 200. In this way, the circuit board 300, the first conductive part 410 and the insulating support 200 can be mechanically connected through the first connecting component 500, thereby installing the grounding component 400 and the circuit board 300 onto the insulating support 200. Furthermore, the circuit board 300 and the grounding component 400 can be electrically connected.

[0064] The grounding component 400 also includes a second conductive part 420, which abuts against the housing 100 and the insulating support 200. The second connecting assembly 600 is used to connect the insulating support 200, the second conductive part 420 and the housing 100. In this way, the insulating support 200 and the housing 100 can be mechanically connected through the second connecting assembly 600, thereby installing the insulating support 200 onto the housing 100. Furthermore, the second conductive part 420 is pressed between the insulating support 200 and the housing 100, thereby enabling the grounding component 400 and the housing 100 to be electrically connected.

[0065] In this way, the circuit board 300, the grounding component 400, and the insulating bracket 200 are first assembled into a whole through the first connecting component 500, and then the whole consisting of the circuit board 300, the grounding component 400, and the insulating bracket 200 is installed into the housing 100 through the second connecting component 600. In this process, the circuit board 300, the grounding component 400, and the housing 100 can be connected simultaneously, thereby realizing the grounding of the energy storage device. This achieves two goals at once and simplifies the structure and assembly of the energy storage device.

[0066] Furthermore, since the grounding component 400 is a rigid component, for example, a sheet metal component, compared to the wire harness grounding in the prior art, where the wire harness is a flexible component and occupies a large installation space, the grounding component 400 in this embodiment occupies a small installation space. When the internal space of the energy storage device is relatively tight, the grounding component 400 in this embodiment can better adapt to the narrow space.

[0067] The energy storage device provided in this embodiment includes a housing 100, an insulating support 200, a circuit board 300, a grounding component 400, a first connecting assembly 500, and a second connecting assembly 600. The grounding component 400 includes a first conductive part 410 and a second conductive part 420. The housing 100 is used to integrate components such as the insulating support 200 and the circuit board 300, and the circuit board 300 is grounded through the housing 100. The insulating support 200 is used to mount the circuit board 300, and the circuit board 300 is used to control the current, voltage, etc., of the energy storage device. By providing a first conductive part 410 for electrical connection with the circuit board 300, and a second conductive part 420 for electrical connection with the housing 100, and then connecting the circuit board 300 and the housing 100 through a grounding member 400, the circuit board 300 is grounded. By providing a first connecting component 500 for connecting the circuit board 300, the first conductive part 410, and the insulating bracket 200, the circuit board 300 and the grounding member 400 are fixed to the insulating bracket 200, and the first conductive part 410 and the circuit board 300 are made conductive. By providing a second connecting component 600 for connecting the insulating bracket 200, the second conductive part 420, and the housing 100, the circuit board 300, the grounding member 400, and the insulating bracket 200 are fixed inside the housing 100, and the second conductive part 420 and the housing 100 are made conductive. Thus, the circuit board 300 is made conductive to the housing 100 through the grounding member 400, and the grounding member 400 can adapt to narrow installation spaces.

[0068] Reference Figure 3 , Figure 4 and Figure 9 As shown, in one possible implementation, the first conductive part 410 and the second conductive part 420 are located on adjacent sides of the insulating support 200.

[0069] In other words, the second conductive part 420 is bent relative to the first conductive part 410, so that the first conductive part 410 is located on the side of the insulating support 200 and the second conductive part 420 is located at the bottom of the insulating support 200, thereby facilitating the second conductive part 420 to abut against the bottom of the insulating support 200 and the bottom of the housing 100.

[0070] Reference Figure 9As shown, in some embodiments, the grounding member 400 may further include a positioning part 430. When the grounding member 400 is fixed to the insulating bracket 200, the positioning part 430 can first cooperate with the insulating bracket 200 to achieve the pre-positioning of the grounding member 400, thereby facilitating the subsequent contact of the first conductive part 410 between the circuit board 300 and the insulating bracket 200, thereby facilitating the quick connection of the circuit board 300, the first conductive part 410 and the insulating bracket 200 through the first connecting component 500, and facilitating the subsequent contact of the second conductive part 420 between the insulating bracket 200 and the housing 100, thereby facilitating the quick connection of the insulating bracket 200, the second conductive part and the housing 100 through the second connecting component 600.

[0071] Reference Figures 2 to 4 As shown, in one possible implementation, the first connecting assembly 500 includes at least two first connectors 510, the insulating support 200 has at least two first connecting holes 210, the first connectors 510 have external threads, and the first connecting holes 210 have internal threads that mate with the first connectors 510.

[0072] Each first connector 510 passes through the circuit board 300 and the first conductive part 410 in sequence to be threadedly connected to the first connecting hole 210 in a one-to-one correspondence.

[0073] For example, the first connector 510 can be a screw with a built-in flat spring washer. The screw has an external thread, and the first connecting hole 210 has an internal thread that matches the screw. In this way, after the first connector 510 is threadedly connected to the first connecting hole 210, the circuit board 300, the first conductive part 410 and the insulating bracket 200 can be connected together. Then, the circuit board 300 and the grounding part 400 can be installed on the insulating bracket 200 through the first connecting assembly 500.

[0074] In some embodiments, the surface of the circuit board 300 facing the first conductive portion 410 has a conductive layer, which is in conductive contact with the first conductive portion 410.

[0075] Thus, the surface of the circuit board 300 facing the first conductive part 410 can be locally metallized to form a conductive layer. When the first conductive part 410 is pressed between the circuit board 300 and the insulating support 200, the conductive layer contacts the first conductive layer to achieve conduction, thereby making the circuit board 300 conduct with the grounding member 400.

[0076] Reference Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, in one possible implementation, the second connection assembly 600 includes a second connector 610 and a third connector 620. One end of the second connector 610 is connected to the housing 100, and the other end of the second connector 610 passes through the second conductive part 420 and the insulating support 200 in sequence.

[0077] One of the second connector 610 and the third connector 620 has an internal thread, and the other has a matching external thread. The second connector 610 and the third connector 620 are threadedly connected.

[0078] For example, the second connector 610 is a stud with external threads, and the third connector 620 is a nut with internal threads. The second connector 610 and the third connector 620 are threaded together, thereby connecting the insulating bracket 200, the second conductive part 420 and the housing 100 together, so that the insulating bracket 200, the circuit board 300 and the grounding part 400 are installed together inside the housing 100.

[0079] For example, the second connector 610 is a stud with internal threads, and the third connector 620 is a screw with external threads. The second connector 610 and the third connector 620 are threaded together, thereby connecting the insulating bracket 200, the second conductive part 420 and the housing 100 together, so that the insulating bracket 200, the circuit board 300 and the grounding part 400 are installed together in the housing 100.

[0080] After the second connector 610 cooperates with the second connector 610 to press the second conductive part 420 between the insulating bracket 200 and the housing 100, the second conductive part 420 can be connected to the housing 100, thereby realizing the connection between the grounding part 400 and the housing 100.

[0081] The second connector 610 can be riveted to the housing 100, or the second connector 610 can be welded to the housing 100. The second connector 610 can be made of stainless steel, which can improve the tensile strength of the second connector 610. The second connector 610 has a certain degree of ductility, which helps to absorb the tolerance of the fit, thereby ensuring that the second conductive part 420 keeps in contact with the housing 100.

[0082] Reference Figure 4 , Figure 6 , Figure 8 As shown, in one possible implementation, the insulating bracket 200 has a mounting hole 220, and the second connecting assembly 600 further includes a limiting sleeve 630, which is inserted into the mounting hole 220.

[0083] The second connector 610 is inserted into the limiting sleeve 630. The second connector 610 has an internal thread, and the third connector 620 has an external thread. The third connector 620 is inserted into the second connector 610 and is threadedly connected to the second connector 610.

[0084] One end of the limiting sleeve 630 abuts against the second conductive part 420, and the other end of the limiting sleeve 630 abuts against the third connecting member 620.

[0085] In this way, after the second connector 610 and the third connector 620 are threaded together, the insulating bracket 200, the second conductive part 420 and the housing 100 can be connected together, and the limiting sleeve 630 abuts between the head of the second conductive part 420 and the head of the third connector 620, thereby transmitting the preload of the third connector 620 to the second conductive part 420, so that the second conductive part 420 and the housing 100 always maintain effective contact, thereby reducing the grounding resistance.

[0086] It should be noted that, according to relevant requirements, the resistance of the grounding circuit should be less than 0.1Ω. When the energy storage device is equipped with a limit sleeve 630, the grounding resistance can be effectively reduced to below 0.1Ω.

[0087] The limiting sleeve 630 is a metal part, for example, it can be made of high carbon steel. The limiting sleeve 630 can be injection molded into the insulating bracket 200.

[0088] Reference Figure 4 , Figure 6 , Figure 8 , Figure 10 , Figure 11 As shown, in one possible implementation, the second connecting assembly 600 further includes a gasket 640 that abuts between the third connecting member 620 and the limiting sleeve 630.

[0089] In this way, since the gasket 640 has the ability to prevent loosening and absorb assembly tolerances, by setting the gasket 640 between the head of the second connector 610 and the limiting sleeve 630, the force between the second connector 610 and the limiting sleeve 630 can be made uniform, thereby ensuring that the head of the second connector 610 is always pressed against the limiting sleeve 630, and thus ensuring that the second conductive part 420 and the housing 100 always maintain close contact.

[0090] For example, the gasket 640 can be a butterfly spring gasket 640, a wave gasket 640, or a saddle gasket 640. As long as it can ensure that the grounding resistance of the energy storage device is below 0.1Ω when the energy storage device is tested under various operating conditions, the embodiments of this application do not impose any restrictions on this.

[0091] In the axial direction of the limiting sleeve 630, the height difference of the gasket 640 should be greater than or equal to 0.15 mm, which helps to absorb assembly errors, control the probability of loosening, and has a lower cost, significantly reducing costs and improving the safety and reliability of the fit.

[0092] In some embodiments, in the axial direction of the limiting sleeve 630, one end of the limiting sleeve 630 facing away from the second conductive part 420 protrudes from the other end of the second connector 610 facing away from the second conductive part 420.

[0093] Thus, after the third connector 620 is locked, the head of the third connector 620 abuts against the end of the limiting sleeve 630 facing away from the second conductive part 420, thereby transmitting the pre-tightening force to the second conductive part 420 through the limiting sleeve 630, so that the second conductive part 420 can be pressed onto the housing 100.

[0094] In some embodiments, the height difference H between the end face of the limiting sleeve 630 facing away from the second conductive part 420 and the end face of the second connector 610 facing away from the second conductive part 420 satisfies 0 < H ≤ 0.22 mm.

[0095] On the one hand, if H is less than 0, the end of the limiting sleeve 630 facing away from the second conductive part 420 cannot protrude from the end of the second connector 610 facing away from the second conductive part 420. On the other hand, if H is greater than 0.22 mm, H cannot be matched with the manufacturing tolerances of the grounding part 400, the limiting sleeve 630, and the second connector 610, which leads to insufficient preload between the second conductive part 420 and the housing 100 after assembly.

[0096] Therefore, H is between 0 and 0.22 mm, which allows the end of the limiting sleeve 630 facing away from the second conductive part 420 to protrude from the end of the second connector 610 facing away from the second conductive part 420. This causes the head of the third connector 620 to abut against the end of the limiting sleeve 630 facing away from the second conductive part 420, so that the limiting sleeve 630 provides a preload to the second conductive part 420. It can also be compatible with the manufacturing tolerances of other components so that the preload between the second conductive part 420 and the housing 100 meets the requirements.

[0097] It should be noted that, in order to improve the connection reliability between the circuit board 300 and the insulating support 200, the energy storage device may also include several fourth connectors 700, which connect the circuit board 300 and the insulating support 200. For example, the fourth connector 700 may be a screw.

[0098] Based on the above embodiments, this application also provides an electrical device, which includes an energy storage device and an electrical device, wherein the energy storage device supplies power to the electrical device.

[0099] The structure and working principle of the energy storage device have been described in detail in the foregoing embodiments, and will not be repeated here.

[0100] For example, the electrical equipment can be a vehicle, the electrical device can be an electric motor, and the energy storage device can provide electrical energy to the electric motor, thereby driving the vehicle. The vehicle can be a pure electric vehicle, a range-extended electric vehicle, a hybrid electric vehicle, etc., and can also be any vehicle with an energy storage device; this embodiment does not limit this.

[0101] Alternatively, electrical equipment can also include ships, aircraft, electronic terminal equipment, electrical appliances, and energy storage equipment, which will not be described in detail here.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An energy storage device, characterized in that, include: Box (100); An insulating bracket (200) is located inside the housing (100); The circuit board (300) is located inside the housing (100) and on one side of the insulating support (200); Grounding component (400), the grounding component (400) includes a first conductive part (410) and a second conductive part (420) connected to each other, the first conductive part (410) is located between the circuit board (300) and the insulating support (200), and the second conductive part (420) is located between the insulating support (200) and the housing (100); A first connecting component (500) connects the circuit board (300), the first conductive part (410), and the insulating bracket (200). The second connecting assembly (600) connects the insulating bracket (200), the second conductive part (420), and the housing (100).

2. The energy storage device according to claim 1, characterized in that, The first conductive part (410) and the second conductive part (420) are located on adjacent sides of the insulating support (200).

3. The energy storage device according to claim 1 or 2, characterized in that, The first connecting assembly (500) includes at least two first connectors (510), the insulating bracket (200) has at least two first connecting holes (210), the first connectors (510) have external threads, and the first connecting holes (210) have internal threads that match the first connectors (510); Each of the first connectors (510) passes through the circuit board (300) and the first conductive part (410) in sequence to be threadedly connected to the first connecting hole (210) one by one.

4. The energy storage device according to claim 3, characterized in that, The circuit board (300) has a conductive layer on the surface facing the first conductive part (410), and the conductive layer is in conductive contact with the first conductive part (410).

5. The energy storage device according to claim 1 or 2, characterized in that, The second connection assembly (600) includes a second connector (610) and a third connector (620). One end of the second connector (610) is connected to the housing (100), and the other end of the second connector (610) passes through the second conductive part (420) and the insulating support (200) in sequence. One of the second connector (610) and the third connector (620) has an internal thread and the other has a matching external thread, and the second connector (610) is threadedly connected to the third connector (620).

6. The energy storage device according to claim 5, characterized in that, The insulating bracket (200) has a mounting hole (220), and the second connecting assembly (600) further includes a limiting sleeve (630) which is inserted into the mounting hole (220). The second connector (610) is inserted into the limiting sleeve (630). The second connector (610) has an internal thread, and the third connector (620) has an external thread. The third connector (620) is inserted into the second connector (610) and is threadedly connected to the second connector (610). One end of the limiting sleeve (630) abuts against the second conductive part (420), and the other end of the limiting sleeve (630) abuts against the third connector (620).

7. The energy storage device according to claim 6, characterized in that, The second connecting assembly (600) further includes a gasket (640) abutting between the third connecting member (620) and the limiting sleeve (630).

8. The energy storage device according to claim 6, characterized in that, In the axial direction of the limiting sleeve (630), one end of the limiting sleeve (630) opposite to the second conductive part (420) protrudes from the other end of the second connector (610) opposite to the second conductive part (420).

9. The energy storage device according to claim 8, characterized in that, The height difference H between the end face of the limiting sleeve (630) facing away from the second conductive part (420) and the end face of the second connector (610) facing away from the second conductive part (420) satisfies 0 < H ≤ 0.22 mm.

10. An electrical appliance, characterized in that, include: The energy storage device as described in any one of claims 1-9; The electrical device is powered by the energy storage device.

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