Housing assembly, mobile energy storage device and energy storage system

Abstract

The application discloses a kind of shell assembly, mobile energy storage device and energy storage system, shell assembly includes first shell, key structure and circuit board, first shell is equipped with the key through hole passing through its inside and outside, the inner surface of first shell is provided with first fixed part, key structure includes key main body and spring arm, key main body is worn in key through hole, and key main body is provided with key protrusion, spring arm is located in the inside of first shell, spring arm has relatively arranged connecting end and fixed end along its extension direction, connecting end is connected with key main body, fixed end is connected with first fixed part, circuit board is set to the inside of first shell, and it is located in the side of key structure away from key through hole, the surface of circuit board towards key structure is provided with control button;Wherein, one of circuit board and fixed end is equipped with positioning part, the other of circuit board and fixed end is equipped with matched part, matched part is connected with positioning part, to make control button correspond key protrusion setting.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to a housing component, a mobile energy storage device, and an energy storage system. Background Technology

[0002] Energy storage products in related technologies typically have input and output interfaces on their casing to enable charging and discharging functions. Furthermore, to facilitate user control of these energy storage products, such as turning them on and off, charging, discharging, lighting, and displaying information, buttons are usually provided on the casing. These buttons include power on / off buttons, DC output switch buttons, AC output switch buttons, lighting switch buttons, and display screen switch buttons, allowing users to operate the energy storage product by pressing these buttons.

[0003] However, the raised buttons on the buttons in the related technologies are prone to misalignment or mismatch with the button contacts on the circuit board, which can easily cause the buttons to malfunction when pressed, resulting in abnormal button operation and affecting the control effect of the buttons. Summary of the Invention

[0004] This application discloses a housing assembly, a mobile energy storage device, and an energy storage system, which can achieve precise alignment between the button protrusions on the button structure and the control buttons on the circuit board within a limited space, thereby improving the control effect of the button structure.

[0005] To achieve the above objectives, in a first aspect, this application discloses a housing assembly, the housing assembly comprising:

[0006] A first housing, wherein the first housing is provided with a key through hole that passes through its interior and exterior, and a first fixing part is provided on the inner surface of the first housing;

[0007] A button structure, comprising a button body and a spring arm, wherein the button body passes through a button through-hole and has a button protrusion protruding towards the interior of the first housing; the spring arm is located inside the first housing and has a connecting end and a fixing end disposed opposite to each other along its extending direction; the connecting end is connected to the button body, and the fixing end is connected to the first fixing part; and...

[0008] A circuit board is disposed inside the first housing and located on the side of the button structure facing away from the button through-hole. A control button protrudes from the surface of the circuit board facing the button structure, and the control button is corresponding to the button protrusion.

[0009] One of the circuit board and the fixed end is provided with a positioning part, and the other of the circuit board and the fixed end is provided with a mating part. The mating part passes through the positioning part so that the control button is set to correspond to the button protrusion.

[0010] In the housing assembly provided in this application, the button structure and circuit board are stacked and assembled inside the first housing. A positioning part is provided at one of the fixed ends of the elastic arm of the circuit board and the button structure, and a mating part is provided at the other. The positioning part and the mating part cooperate with each other to achieve precise positioning of the button structure and the circuit board, ensuring accurate positioning between the button structure and the circuit board. This ensures that the button protrusion on the button structure can be aligned with the control button on the circuit board, preventing button structure malfunction and ensuring the control effect of the button structure.

[0011] As an optional implementation, in the embodiment of the first aspect of this application, the circuit board abuts against the fixed end in the depth direction of the key via. By setting the fixed end of the key structure to abut against the circuit board, the fixed end not only provides a setting position for the positioning structure (i.e., the mating part and the positioning part) of the circuit board, thus providing a positioning point for the circuit board, but also provides support for the circuit board, preventing the circuit board from being squeezed or even failing, thereby improving the stability of the overall structure.

[0012] As an optional implementation, in an embodiment of the first aspect of this application, the circuit board is provided with a second fixing part, which is connected to the fixing end, so as to fix the circuit board inside the first housing.

[0013] Since the button structure is located between the circuit board and the inner surface of the first housing, if the circuit board were directly connected to the inner surface of the first housing, to avoid obstruction by the button structure, the area of ​​the circuit board would typically be increased to allow for a space offset from the button structure for connection with the first housing. That is, the circuit board would have a connection position extending beyond the outer periphery of the button structure and not obstructed by it. However, this would easily increase the space occupied by the circuit board in the first housing, hindering miniaturization design. Therefore, by connecting the second fixing part to the fixing end to achieve a fixed connection between the circuit board and the first housing, the area of ​​the circuit board is not increased, facilitating miniaturization and reducing its space occupation within the first housing. This allows for miniaturization of the housing assembly, making it suitable for miniaturized mobile energy storage devices, thus making it easier for users to carry the mobile energy storage device.

[0014] As an optional implementation, in an embodiment of the first aspect of this application, the button structure includes a plurality of elastic arms arranged at intervals along the circumference of the button body; the first fixing part is multiple, and at least one of the first fixing parts is connected to the fixed end of one of the elastic arms. This allows the button body to be connected to the first outer shell via multiple elastic arms, making the force on the button body more dispersed and uniform when pressed. This avoids uneven force distribution during pressing, preventing button structure failure and ensuring the accuracy of button pressing, preventing button structure malfunction from affecting the function of the mobile energy storage device, and improving the user experience.

[0015] As an optional implementation, in the embodiment of the first aspect of this application, the fixed ends of any two adjacent elastic arms are connected by connecting ribs; or, the number of elastic arms is even, the fixed ends of each pair of elastic arms are connected by connecting ribs, and the fixed end of each elastic arm is connected to one connecting rib.

[0016] When the fixed ends of any two adjacent elastic arms are connected by connecting ribs, a U-shaped structure is formed between any two adjacent elastic arms and the button body. This structure is more stable, thus improving the overall structural stability of the button and effectively preventing button malfunction due to displacement during pressing. Even when the number of elastic arms is even, and the fixed ends of each pair of elastic arms are connected by connecting ribs, while not every pair of adjacent elastic arms can form a U-shaped structure with the button body, each elastic arm and the other elastic arm can form a U-shaped structure with the button body. This ensures that no single elastic arm is isolated and not part of the U-shaped structure, maintaining overall structural stability and preventing button malfunction due to displacement during pressing.

[0017] As an optional implementation, in an embodiment of the first aspect of this application, in two elastic arms connected by the connecting ribs, the fixed end of one elastic arm is connected to the first fixing part, the fixed end of the other elastic arm is not connected to the first fixing part, and the fixed end of the other elastic arm is provided with the mating part or the positioning part.

[0018] In this way, the two elastic arms connected by the connecting ribs can be connected to the first outer shell by means of the elastic arm connected to the first fixed part. Thus, even if the other elastic arm is not fixedly connected to the first outer shell, it does not affect the deformation of the other elastic arm when the button body is pressed. That is, when the button body is pressed, the other elastic arm, which is not fixedly connected to the first outer shell, can still deform to distribute the force on the button body. At the same time, since the positioning part or mating part is set on the fixed end that is not connected to the first outer shell, that is, the positioning part or mating part is not set on the fixed end connected to the first fixed part, so that the fixed end has enough space to connect with the first fixed part, avoiding the positioning part or mating part from interfering with the fixed connection between the fixed end and the first fixed part, thus ensuring the reliability of the connection between the fixed end and the first fixed part.

[0019] As an optional implementation, in an embodiment of the first aspect of this application, the circuit board has a first preset direction and a second preset direction, and the size of the circuit board in the first preset direction is greater than or equal to the size of the circuit board in the second preset direction. The circuit board is connected to the first housing at both ends in the first preset direction. The button structure includes a first sub-button and a second sub-button arranged at intervals along the first preset direction. Both the first sub-button and the second sub-button include the button body and a plurality of elastic arms. The button body of the first sub-button has a first side and a second side opposite to each other in the first preset direction, with the second side closer to the second sub-button than the first side. The second sub-button has... The third and fourth sides are opposite each other in the first preset direction, with the third side being closer to the first sub-button than the fourth side; the plurality of elastic arms in the first sub-button include a first elastic arm and a second elastic arm, with the first elastic arm disposed on the first side and the second elastic arm disposed on the second side; the plurality of elastic arms in the second sub-button include a third elastic arm and a fourth elastic arm, with the third elastic arm disposed on the third side and the fourth elastic arm disposed on the fourth side; the length of the first elastic arm along its extension direction is greater than the length of the second elastic arm along its extension direction, and / or the length of the fourth elastic arm along its extension direction is greater than the length of the third elastic arm along its extension direction.

[0020] Since the size of the circuit board in the first preset direction is greater than or equal to the size of the circuit board in the second preset direction, and the circuit board is only fixedly connected to the first housing at both ends in the first preset direction, there is no connection or support position in the middle of the circuit board in the first preset direction. At the same time, according to the principle of mechanics, the longer the elastic arm, the greater the torque. Therefore, making the length of the first elastic arm along its extension direction greater than the length of the second elastic arm along its extension direction makes the first elastic arm easier to bear force and deform more than the second elastic arm. Thus, when the user presses the first sub-button, the overall force can be distributed more in the first elastic arm. Since the first elastic arm is close to one end of the circuit board in the first preset direction, the end of the circuit board in the first preset direction can be stressed first, that is, the end of the circuit board that is connected and fixed is stressed first. This avoids the position of the circuit board that is off-center in the first preset direction and lacks connection or support being stressed first, thereby reducing the risk of the circuit board deforming or even breaking.

[0021] Similarly, the length of the fourth bullet arm along its extension direction is greater than that of the third bullet arm along its extension direction, making the fourth bullet arm easier to bear force and more deformable than the third bullet arm. Thus, when the user presses the first sub-button, the overall force can be distributed more on the fourth bullet arm. Since the fourth bullet arm is close to the other end of the circuit board in the first preset direction, the other end of the circuit board in the first preset direction can be stressed first. That is, the other end of the circuit board that is connected and fixed is stressed first, avoiding the part of the circuit board that is off-center, lacks connection and support in the first preset direction being stressed first, thereby reducing the risk of the circuit board deforming or even breaking.

[0022] As an optional implementation, in the embodiment of the first aspect of this application, the first and second bullet arms are symmetrically arranged, and the third and fourth bullet arms are symmetrically arranged. This allows the button structure to receive more even force on both sides of the circuit board in the first preset direction, avoiding the problem of button malfunction caused by displacement of the button structure during pressing.

[0023] As an optional implementation, in the embodiment of the first aspect of this application, the number of the first fixing parts is less than the number of the elastic arms;

[0024] The first and second bullet-shaped lever arms are connected by a connecting rib. The fixed end of the first bullet-shaped lever arm is connected to the first fixing part, while the fixed end of the second bullet-shaped lever arm is not connected to the first housing via the first fixing part. The fixed end of the first bullet-shaped lever arm is connected to one end of the circuit board in the first preset direction. The fixed end of the second bullet-shaped lever arm is provided with a positioning part or a mating part. In this way, the second bullet-shaped lever arm can connect to the first housing with the help of the first bullet-shaped lever arm, so even if the second bullet-shaped lever arm is not fixedly connected to the first housing, it does not affect the connection of the second bullet. The lever arm deforms when the button body is pressed. That is, when the button body is pressed, the second bullet lever arm, which is not fixedly connected to the first housing, can still deform to distribute the force on the button body of the first sub-button. At the same time, since the positioning part or mating part is set on the fixed end that is not connected to the first housing or the circuit board, that is, the positioning part or mating part is not set on the fixed end that is connected to the first fixed part or the circuit board, the fixed end can have enough space to connect with the first fixed part and the circuit board, avoiding the positioning part or mating part from interfering with the fixed connection between the fixed end and the first fixed part and the circuit board, thus ensuring the reliability of the connection between the fixed end, the first fixed part and the circuit board.

[0025] The third and fourth bullet arms are connected by connecting ribs. The fixed end of the fourth bullet arm is connected to the first fixing part, the fixed end of the third bullet arm is not connected to the first housing through the first fixing part, and the fixed end of the fourth bullet arm is connected to the other end of the circuit board in the first preset direction. The fixed end of the third bullet arm is provided with the positioning part or the mating part. In this way, the third bullet arm can be connected to the first outer shell with the help of the fourth bullet arm. Therefore, even if the third bullet arm is not fixedly connected to the first outer shell, it will not affect the deformation of the third bullet arm when the button body is pressed. That is, when the button body is pressed, the third bullet arm, which is not fixedly connected to the first outer shell, can still deform to distribute the force on the button body of the second sub-button. At the same time, since the positioning part or mating part is set on the fixed end that is not connected to the first outer shell or the circuit board, that is, the positioning part or mating part is not set on the fixed end that is connected to the first fixed part or the circuit board, the fixed end can have enough space to connect with the first fixed part and the circuit board, avoiding the positioning part or mating part from interfering with the fixed connection between the fixed end and the first fixed part and the circuit board, thus ensuring the reliability of the connection between the fixed end, the first fixed part and the circuit board.

[0026] As an optional implementation, in an embodiment of the first aspect of this application, the button structure includes a first sub-button and a second sub-button. Both the first sub-button and the second sub-button include the button body and the elastic arm. The fixed end of the first sub-button is configured as a first fixed end, and the fixed end of the second sub-button is configured as a second fixed end. At least one of the first fixed end and the second fixed end is provided with a first anti-mistake part, and the inner surface of the first housing is provided with a second anti-mistake part. Furthermore, one of the first anti-mistake part and the second anti-mistake part is an anti-mistake protrusion, and the other of the first anti-mistake part and the second anti-mistake part is an anti-mistake groove. The anti-mistake protrusion is embedded in the anti-mistake groove.

[0027] This allows for effective error prevention through the combination of the error-proof protrusions and grooves, ensuring proper assembly of the first and second sub-buttons. It prevents the first sub-button from being installed into the second sub-via and vice versa during assembly, thus avoiding incorrect assembly of the first and second sub-buttons. Furthermore, it effectively prevents mismatches or errors in function when the target button is pressed, ensuring the accuracy of control over both the first and second sub-buttons.

[0028] As an optional implementation, in the embodiment of the first aspect of this application, only one of the first fixed end and the second fixed end is provided with the first anti-mistake part. Thus, during the assembly process, when the first sub-button and the second sub-button are installed in reverse, the anti-mistake protrusion will be pushed against the flat surface without the anti-mistake groove, causing the first sub-button or the second sub-button to be unable to be installed, prompting the installer that the first sub-button and the second sub-button have been installed in reverse, thereby achieving the anti-mistake installation effect of the button structure. At the same time, the cooperation between the anti-mistake protrusion and the anti-mistake groove not only has the anti-mistake function, but also has the positioning function.

[0029] Alternatively, both the first fixed end and the second fixed end may be provided with the first anti-mistake part. The shapes of the first anti-mistake parts on the first fixed end and the first anti-mistake parts on the second fixed end may be different, and / or the sizes of the first anti-mistake parts on the first fixed end and the first anti-mistake parts on the second fixed end may be different. Therefore, during the assembly process, the first anti-mistake parts and the second anti-mistake parts can only be fitted together when their shapes and / or sizes are the same. At this time, neither the first fixed end nor the second fixed end will be blocked by the anti-mistake protrusion, allowing the button bodies of the first sub-button and the second sub-button to be smoothly inserted into the corresponding button through holes and installed on the first housing. The first anti-mistake parts and the second anti-mistake parts with different shapes cannot be installed, thereby preventing the first sub-button and the second sub-button from being installed backwards, and achieving the anti-mistake installation effect of the button structure.

[0030] As an optional implementation, in the embodiment of the first aspect of this application, the first fixing part is a protruding structure protruding on the inner surface of the first housing, and the second anti-mistake part is an anti-mistake protrusion connected to the outer peripheral surface of the first fixing part; the surface of the first fixing end and / or the second fixing end facing away from the circuit board is recessed inward to form a positioning groove, the first anti-mistake part is an anti-mistake groove communicating with the positioning groove, and the anti-mistake groove penetrates the surface of the first fixing end and / or the second fixing end facing away from the circuit board, the first fixing part is embedded in the positioning groove, and the second anti-mistake part is embedded in the first anti-mistake part.

[0031] By adopting the above design method, not only can the cooperation of the anti-misplacement protrusion and anti-misplacement groove prevent the first sub-button and the second sub-button from being installed backwards, thus playing a role in guiding the installation of the first sub-button and the second sub-button and improving the installation accuracy of the first sub-button and the second sub-button; at the same time, in addition to cooperating with the anti-misplacement groove to achieve the effect of preventing misplacement, the anti-misplacement protrusion can also serve as a reinforcing rib of the first fixing part, strengthening the structural strength of the first fixing part and improving the connection reliability of the button structure and the circuit board on the first housing.

[0032] Secondly, this application discloses a mobile energy storage device, which includes a second housing, an energy storage unit, and a housing assembly as described in the first aspect above. The second housing and the first housing are connected, and an inner cavity is formed between them. The energy storage unit is built into the inner cavity, and the circuit board is electrically connected to the energy storage unit. The mobile energy storage device with the housing assembly described in the first aspect can also achieve precise alignment between the button protrusions on the button structure and the control buttons on the circuit board within a limited space, thereby improving the control effect of the button structure.

[0033] Thirdly, this application discloses an energy storage system having a mobile energy storage device as described in the first aspect above. Since the mobile energy storage device has the same or similar beneficial effects as the housing assembly described in the first aspect, the energy storage system having the mobile energy storage device achieves precise alignment between the button protrusions on the button structure and the control buttons on the circuit board within a limited space, thereby improving the control effect of the button structure.

[0034] Compared with the prior art, the beneficial effects of this application are as follows:

[0035] The housing assembly, mobile energy storage device, and energy storage system provided in this application embodiment include a button structure and a circuit board, which are stacked and assembled inside the first housing. A positioning part is provided at one of the fixed ends of the elastic arm of the circuit board and the button structure, while a mating part is provided at the other. This allows for precise positioning of the button structure and the circuit board through the cooperation of the positioning part and the mating part, ensuring accurate positioning between the button structure and the circuit board. This, in turn, ensures that the button protrusion on the button structure aligns with the control button on the circuit board, preventing button structure malfunction and ensuring the control effect of the button structure. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the energy storage system disclosed in the embodiments of this application;

[0038] Figure 2 This is an exploded structural diagram of the mobile energy storage device disclosed in the embodiments of this application;

[0039] Figure 3 This is a schematic diagram of the structure of the housing assembly disclosed in the embodiments of this application;

[0040] Figure 4 This is an exploded structural diagram of the housing assembly disclosed in an embodiment of this application;

[0041] Figure 5 This is an exploded structural diagram of the housing assembly disclosed in an embodiment of this application from another perspective;

[0042] Figure 6 This is a top view of the housing assembly disclosed in the embodiments of this application;

[0043] Figure 7 yes Figure 6 A cross-sectional view of the housing assembly along the AA direction;

[0044] Figure 8 This is a schematic diagram of the button structure including two elastic arms disclosed in the embodiments of this application;

[0045] Figure 9 This is a schematic diagram of the button structure including four elastic arms disclosed in the embodiments of this application;

[0046] Figure 10This is a schematic diagram of the housing assembly disclosed in an embodiment of this application from another perspective;

[0047] Figure 11 yes Figure 10 An exploded view of the outer shell components;

[0048] Figure 12 This is a schematic diagram of the structure of the first outer shell disclosed in the embodiments of this application;

[0049] Figure 13 This is a schematic diagram of the key structure including the first sub-key and the second sub-key disclosed in the embodiments of this application;

[0050] Figure 14 This is a schematic diagram of the button structure, including the first sub-button and the second sub-button, disclosed in the embodiments of this application from another perspective.

[0051] Explanation of main figure symbols

[0052] 100 - Portable energy storage device;

[0053] 10-Outer shell assembly; 11-First outer shell; 111-Button through hole; 111a-First sub-through hole; 111b-Second sub-through hole; 112-First fixing part; 112a-First sub-fixing part; 112b-Second sub-fixing part; 1121-First threaded hole; 1122-Threaded seat; 113-Second foolproof part; 12-Button structure; 12a-First sub-button; 12b-Second sub-button; 121-Button body; 121a-First side; 121b-Second side; 121c-Third side; 121d-Fourth side; 1211-Button protrusion; 12 2-Elastic arm; 122a-First elastic arm; 122b-Second elastic arm; 122c-Third elastic arm; 122d-Fourth elastic arm; 1221-Connecting end; 1222-Fixed end; 1222a-First fixed end; 1222b-Second fixed end; 1223-Matching part; 1224-First through hole; 1225-Positioning groove; 1226-First anti-foolproof part; 123-Connecting rib; 13-Circuit board; 131-Control button; 132-Positioning part; 133-Second fixed part; 133a-Second through hole; 14-First threaded part;

[0054] 20 - Second outer shell; 21 - Inner cavity;

[0055] 30 - Energy storage unit;

[0056] f1 - First preset direction; f2 - Second preset direction. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0058] 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 application.

[0059] It is understood that the terms "first," "second," etc., used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, a first button may be referred to as a second button, and similarly, a second button may be referred to as a first button. Both the first button and the second button are buttons, but they are not the same button.

[0060] It is understood that the term "connection" in the following embodiments should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have electrical signal or data transmission with each other.

[0061] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that terms such as “comprising / including” or “having” specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. The term “and / or” as used in this specification is merely a description of the relationship between related objects, indicating that three relationships may exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. That is, the term “and / or” as used in this specification includes any and all combinations of the related listed items.

[0062] Please see Figure 1 This application discloses an energy storage device, such as a mobile energy storage device 100, and in particular, a miniaturized mobile energy storage device 100 that allows users to carry the mobile energy storage device 100 by hand to facilitate moving the mobile energy storage device 100 to different locations.

[0063] Please see Figure 1 and Figure 2The mobile energy storage device 100 provided in this application embodiment may include a housing assembly 10, a second housing 20, and an energy storage unit 30. The second housing 20 is connected to the housing assembly 10, and an inner cavity 21 is formed between the second housing 20 and the housing assembly 10. The energy storage unit 30 is built into the inner cavity 21 to prevent the energy storage unit 30 from being exposed to the environment, thereby achieving protection of the energy storage unit 30.

[0064] In one embodiment, the outer casing assembly 20 can serve as the top casing assembly of the mobile energy storage device 100, and the second casing 20 serves as the bottom casing of the mobile energy storage device 100. In another embodiment, the outer casing assembly 20 can also serve as the bottom casing assembly of the mobile energy storage device 100, and the second casing 20 serves as the top casing of the mobile energy storage device 100.

[0065] Optionally, the energy storage unit 30 may include one or more battery cells. When the energy storage unit 30 includes multiple battery cells, such as two, three, four, five, six, or more battery cells, the multiple battery cells may be arranged in a straight line along a first direction, or they may be arranged in an array along a first direction and a second direction. Furthermore, the multiple battery cells may be connected in series or in parallel with each other. For example, as... Figure 2 As shown, the second outer shell 20 has a cuboid structure, and the energy storage unit 30 includes two cells connected in series. Each cell has a cuboid structure, and the two cells connected in series are arranged along the first direction.

[0066] Please see Figures 2 to 4 The housing assembly 10 provided in this application embodiment includes a first housing 11, a button structure 12, and a circuit board 13. The first housing 11 is connected to the second housing 20, and an inner cavity 21 is formed between the first housing 11 and the second housing 20.

[0067] Please see Figures 3 to 5 The first housing 11 in this application is provided with a key through hole 111 that penetrates its interior and exterior. That is, the key through hole 111 penetrates the inner surface and the outer surface of the first housing 11, and the inner surface of the first housing 11 is provided with a first fixing part 112.

[0068] In this application, the button structure 12 includes a button body 121 and a spring arm 122. The button body 121 passes through the button through hole 111, and the button body 121 has a button protrusion 1211 protruding towards the inside of the first housing 11. The spring arm 122 is located inside the first housing 11. The spring arm 122 has a connecting end 1221 and a fixing end 1222 that are opposite to each other along its extension direction. The connecting end 1221 is connected to the button body 121, and the fixing end 1222 is connected to the first fixing part 112, so as to realize the fixed connection between the button structure 12 and the first housing 11.

[0069] Here, "fixed connection" refers to a connection where the fixed end 1222 cannot move relative to the first housing 11 after being connected to it. This includes detachable connections such as screw connections, snap-fit ​​connections, plug connections, pin connections, and magnetic connections, as well as non-detachable connections such as welding, bonding, and riveting. It is understood that, in addition to the "fixed connection" mentioned here, which refers to the fixed end 1222 not moving relative to the first housing 11 after being connected, including both detachable and non-detachable connections, any subsequent mention of "fixed connection" will also refer to the same situation, including both detachable and non-detachable connections. In other words, the "fixed connection" mentioned in this application refers to a connection where one component cannot move relative to the other after the two components are connected, encompassing both detachable and non-detachable connections.

[0070] In this application, the circuit board 13 is disposed inside the first housing 11 and located on the side of the button structure 12 facing away from the button through hole 111. The circuit board 13 is electrically connected to the energy storage unit, and a control button 131 is protruding from the surface of the circuit board 13 facing the button structure 12. Furthermore, one of the circuit board 13 and the fixed end 1222 is provided with a positioning part 132, while the other of the circuit board 13 and the fixed end 1222 is provided with a mating part 1223. That is, when the circuit board 13 is provided with the positioning part 132, the fixed end 1222 is provided with the mating part 1223; and when the circuit board 13 is provided with the mating part 1223, the fixed end 1222 is provided with the positioning part 132. The mating part 1223 and the positioning part 132 are connected to each other so that the control button 131 on the circuit board 13 corresponds to the button protrusion 1211 on the button body 121. In other words, during the actual assembly process, the mating part 1223 and the positioning part 132 can be used to achieve precise positioning of the button structure 12 and the circuit board 13, ensuring accurate positioning between the button structure 12 and the circuit board 13. This ensures that the button protrusion 1211 on the button structure 12 can be aligned with the control button 131 on the circuit board 13, preventing the button structure 12 from malfunctioning and ensuring the control effect of the button structure 12.

[0071] As an example, the positioning part 132 may be a positioning hole, and the mating part 1223 may be a positioning protrusion that matches the positioning hole, which is inserted into the positioning groove.

[0072] In another example, the positioning part 132 may be a positioning protrusion, and the mating part 1223 may be a positioning hole that matches the positioning protrusion, which is inserted into the positioning groove.

[0073] In another example, both the positioning part 132 and the mating part 1223 can be positioning holes. The positioning part 132 and the mating part 1223 can be connected by positioning pins such as screws and bolts, so that the positioning part 132 and the mating part 1223 can achieve the positioning effect.

[0074] In some alternative embodiments, combined with Figure 5 , Figure 6 and Figure 7 As shown, in the embodiment of this application, the circuit board 13 abuts against the fixed end 1222 in the depth direction of the key through hole 111. This allows the fixed end 1222 to not only provide a setting position for the positioning structure of the circuit board 13 (i.e., the aforementioned mating part 1223 and positioning part 132) to provide a positioning point for the circuit board 13, but also to provide support for the circuit board 13, preventing the circuit board 13 from being squeezed or even failing, thus improving the stability of the overall structure.

[0075] It should be understood that when the button body 121 in this application is not pressed, the button protrusion 1211 and the control button 131 can be set apart or in contact. When the button body 121 is pressed, the button body 121 moves relative to the button through hole 111 and simultaneously drives the button protrusion 1211 to move to the control button 131 on the circuit board 13 to trigger the circuit board 13 to perform corresponding operation control, thereby controlling the mobile energy storage device to achieve corresponding functions, such as controlling the mobile energy storage device to achieve power on / off, charging and discharging functions.

[0076] During this pressing process, since the fixed end 1222 of the elastic arm 122 is fixed by the first housing 11, and the connecting end 1221 of the elastic arm 122 is connected to the button body 121, when the button body 121 is pressed, the elastic arm 122 will be pulled and deformed, and when the button body 121 is no longer pressed, the elastic arm 122 will restore its deformation and drive the button body 121 to reset.

[0077] However, the inventors discovered in actual operation that during the pressing process, especially when pressing the periphery of the button structure 12, one side tends to sink much while the other side sinks little, resulting in a deflection phenomenon. This causes the button protrusion 1211 on the button structure 12 to be misaligned with the control button 131 on the circuit board 13, resulting in the button structure 12 becoming misaligned and malfunctioning or having a weak tactile feel, thus leading to a poor user experience.

[0078] Based on this, please refer to Figure 5 , Figure 8 and Figure 9The button structure 12 provided in this application embodiment includes a plurality of elastic arms 122 arranged at intervals along the circumference of the button body 121. There are multiple first fixing parts 112, with at least one first fixing part 112 connected to the fixing end 1222 of an elastic arm 122. This allows the button body 121 to be connected to the first outer shell 11 via multiple elastic arms 122, making the force on the button body 121 more dispersed and uniform when pressed. This avoids uneven force distribution during pressing, preventing button structure 12 from failing and ensuring the accuracy of button pressing. It also prevents button structure 12 malfunction from affecting the function of the mobile energy storage device, thus improving the user experience.

[0079] In this application, the number of elastic arms 122 can be two, three, four, five, six, seven, or eight, etc. When the number of elastic arms 122 is two, four, six, eight, ten, etc., the number of elastic arms 122 is odd, and the number of elastic arms 122 is even; while when the number of elastic arms 122 is three, five, seven, nine, etc., the number of elastic arms 122 is odd.

[0080] In some optional embodiments, regardless of whether the number of elastic arms 122 is odd or even, the fixed ends 1222 of any two adjacent elastic arms 122 are connected by connecting ribs 123. This allows any two adjacent elastic arms 122 and the button body 121 to form a U-shaped structure, which is more stable and improves the overall structural stability of the button structure 12. This effectively prevents the button structure 12 from shifting during pressing, thus preventing button malfunction.

[0081] When the number of elastic arms 122 is even, the fixed ends 1222 of each pair of elastic arms 122 are connected by connecting ribs 123. That is, the fixed ends 1222 of two elastic arms 122 connected by connecting ribs 123 are connected by connecting ribs 123 to the fixed ends 1222 of elastic arms 122 that are not adjacent to each other. However, not every two elastic arms 122 are connected by connecting ribs 123. The fixed end 1222 of each elastic arm 122 is connected to only one connecting rib 123.

[0082] An example, such as Figure 8 As shown, the button structure 12 includes two elastic arms 122, and the fixed ends 1222 of the two elastic arms 122 are connected by a connecting rib 123; another example is... Figure 9As shown, the button structure 12 includes four elastic arms 122, wherein the fixed ends 1222 of two elastic arms 122 are connected by one of the connecting ribs 123, and the fixed ends 1222 of the other two elastic arms 122 are connected by another connecting rib 123.

[0083] In this design, although it is not possible for any two adjacent elastic arms 122 to form a U-shaped structure with the button body 121, it is possible to form a U-shaped structure between each elastic arm 122 and another elastic arm 122 and the button body 121. This ensures that no elastic arm 122 is isolated and not part of the U-shaped structure, and also makes the overall structure of the button structure 12 relatively stable, so as to prevent the button structure 12 from shifting during the pressing process and causing the button to malfunction.

[0084] In this application, the number of the first fixing part 112 and the elastic arm 122 may be the same or different.

[0085] When the number of first fixing parts 112 and elastic arms 122 is different, the number of first fixing parts 112 is less than the number of elastic arms 122. In the two elastic arms 122 connected by connecting ribs 123, the fixing end 1222 of one elastic arm 122 is connected to the first fixing part 112, and the fixing end 1222 of the other elastic arm 122 is not connected to the first outer shell 11 through the first fixing part 112. That is, the first outer shell 11 does not have a first fixing part 112 connected to the other elastic arm 122, and the fixing end 1222 of the other elastic arm 122 has a mating part 1223 or a positioning part 132. In this way, the two elastic arms 122 connected by the connecting rib 123 can be connected to the first outer shell 11 by means of the elastic arm 122 connected to the first fixing part 112. Thus, even if the other elastic arm 122 is not fixedly connected to the first outer shell 11 through the first fixing part 112, it will not affect the deformation of the other elastic arm 122 when the button body 121 is pressed. That is, when the button body 121 is pressed, the other elastic arm 122, which is not fixedly connected to the first outer shell 11, can still deform and distribute the force on the button body 121. Meanwhile, since the positioning part 132 or the mating part 1223 is provided on the fixed end 1222 that is not connected to the first housing 11, that is, the positioning part 132 or the mating part 1223 is not provided on the fixed end 1222 that is connected to the first fixed part 112, the fixed end 1222 has enough space to connect with the first fixed part 112, and the positioning part 132 or the mating part 1223 avoids interference with the fixed connection between the fixed end 1222 and the first fixed part 112, so as to ensure the reliability of the connection between the fixed end 1222 and the first fixed part 112.

[0086] In some alternative embodiments, the circuit board 13 can be directly fixedly connected to the first housing 11; while in other alternative embodiments, the circuit board 13 can also be indirectly fixedly connected to the first housing 11 through the button structure 12, for example, through the fixed end 1222.

[0087] The following description illustrates the technical solution of this application by showing that the circuit board 13 is indirectly fixedly connected to the first housing 11 through the fixed end 1222.

[0088] Please see Figure 9 , Figure 10 and Figure 11 As shown, the circuit board 13 provided in this embodiment of the application is provided with a second fixing part 133, which is connected to the fixing end 1222 to realize the circuit board 13 being fixedly connected to the inside of the first housing 11. Since the button structure 12 is located between the circuit board 13 and the inner surface of the first housing 11, if the circuit board 13 is directly connected to the inner surface of the first housing 11, in order to avoid the button structure 12 from blocking it, the area of ​​the circuit board 13 is usually increased so that the circuit board 13 reserves a position offset from the button structure 12 as the position for connection with the first housing 11. That is, the circuit board 13 has a connection position that extends beyond the outer periphery of the button structure 12 and is not blocked by the button structure 12, so as to connect with the first housing 11. However, this easily increases the space occupied by the circuit board 13 in the first housing 11, which is not conducive to miniaturization design. Therefore, by connecting the second fixing part 133 to the fixing end 1222, the circuit board 13 and the first housing 11 are fixedly connected without increasing the area of ​​the circuit board 13. This facilitates the miniaturization of the circuit board 13 and reduces the space occupied by the circuit board 13 inside the first housing 11. This enables the miniaturization of the housing assembly 10, making it suitable for miniaturized mobile energy storage devices, which in turn makes it easier for users to carry the mobile energy storage device.

[0089] In some alternative embodiments, such as Figure 11 and Figure 12As shown, the first fixing part 112 includes a first threaded hole 1121 formed on the inner surface of the first housing 11, and the fixing end 1222 is provided with a first through hole 1224 that extends through the first threaded hole 1121 in the axial direction. The first through hole 1224 communicates with the first threaded hole 1121. The second fixing part 133 includes a second through hole 133a formed on the circuit board 13, and the second through hole 133a communicates with the first through hole 1224. The housing assembly 10 also includes a first threaded component 14, such as a screw or bolt. The first threaded component 14 passes through the second through hole 133a and the first through hole 1224 sequentially from the surface of the circuit board 13 facing away from the button structure 12, and is screwed into the first threaded hole 1121. This achieves a tight connection between the circuit board 13, the fixed end 1222 and the first housing 11. This allows the fixed connection between the circuit board 13 and the fixed end 1222 to share the same threaded component, which not only saves on the use of parts and costs, but also allows the locking of the circuit board 13 and the fixed end 1222 to be combined into one step, without the need to lock the circuit board 13 and the fixed end 1222 separately. This simplifies the assembly steps of the housing assembly 10 and thus helps to improve the assembly efficiency of the housing assembly 10.

[0090] In some alternative embodiments, combined with Figures 11 to 13 As shown, the first fixing part 112 also includes a threaded seat 1122 protruding from the inner surface of the first housing 11. The threaded seat 1122 is recessed inward toward the surface of the circuit board 13 to form a first threaded hole 1121. That is, the first fixing part 112 includes the threaded seat 1122 and the first threaded hole 1121 formed on the threaded seat 1122. The fixing end 1222 of the elastic arm 122 is recessed inward toward the surface of the circuit board 13 to form a positioning groove 1225. That is, the fixing end 1222 is recessed inward toward the surface of the first housing 11 to form a positioning groove 1225, and the threaded seat 1122 is embedded in the positioning groove 1225. The first through hole 1224 is formed on the bottom surface of the positioning groove 1225, so that the first threaded part 14 can pass through the second through hole 133a and the first through hole 1224 sequentially from the surface of the circuit board 13 away from the button structure 12, and be screwed into the first threaded hole 1121, thereby realizing the tight connection between the circuit board 13, the fixed end 1222 and the first outer shell 11.

[0091] Through the above design, during actual assembly, the key structure 12 can be quickly and accurately assembled onto the preset installation position of the first housing 11 using the cooperation of the threaded seat 1122 and the positioning groove 1225. This facilitates the alignment of the key body 121 with the key through hole 111 and its insertion into the key through hole 111, avoiding misalignment and thus improving the installation accuracy and assembly efficiency of the key structure 12. Furthermore, the threaded seat 1122 can be used to form the first threaded hole 1121, providing a locking position for fixing the circuit board 13 and the fixing end 1222, and can also cooperate with the positioning groove 1225 on the fixing end 1222 to provide positioning for the assembly of the key structure 12. This allows the threaded seat 1122 to serve two purposes, eliminating the need for additional positioning protrusions to cooperate with the positioning groove 1225 for positioning. This simplifies the structural design of the first housing 11, facilitates its fabrication, and reduces its processing cost.

[0092] Furthermore, by providing a threaded seat 1122 protruding on the inner surface of the first housing 11 to form the first threaded hole 1121 on the threaded seat 1122, the first housing 11 can maintain a thinner wall thickness to achieve a lightweight design, thereby realizing a lightweight design for the mobile energy storage device. This allows the user to carry the mobile energy storage device while the threaded seat 1122 extends the depth of the first threaded hole 1121, increasing the connection area between the first threaded hole 1121 and the first threaded component 14. This improves the connection reliability between the first threaded hole 1121 and the first threaded component 14, and further improves the installation reliability of the button structure 12 and the circuit board 13 in the first housing 11. At the same time, it avoids the first threaded hole 1121 penetrating the outer surface of the first housing 11 due to the need to extend the depth of the first threaded hole 1121. This ensures that the outer surface of the first housing 11 exposed to the external environment is free of holes, thus preventing rainwater and other liquids from entering the interior of the first housing 11 through holes and improving the waterproof performance of the housing assembly 10.

[0093] In this application, the housing assembly 10 mainly serves as the top cover of the mobile energy storage device, and the button structure 12 on the housing assembly 10 is mainly used to control the power on / off, charging and discharging of the mobile energy storage device. Of course, in other embodiments, when the mobile energy storage device includes a display screen and indicator lights, for example, the display screen and indicator lights can be set on the first housing 11, the button structure 12 on the housing assembly 10 can also be used to control the lighting, display, etc. of the mobile energy storage device.

[0094] Therefore, in order to enable different functions to be achieved by pressing different buttons, please refer to [link / reference needed]. Figure 13The button structure 12 provided in this application embodiment may include a first sub-button 12a and a second sub-button 12b. The first sub-button 12a and the second sub-button 12b have different functions, that is, the first sub-button 12a and the second sub-button 12b have different uses. Thus, pressing the first sub-button 12a can control the mobile energy storage device to achieve one function, and pressing the second sub-button 12b can control the mobile energy storage device to achieve another function.

[0095] For example, the first sub-button 12a can serve as the power on / off button for the mobile energy storage device, allowing the device to be switched on and off by pressing the first sub-button 12a. The second sub-button 12b can serve as the DC output switch button and / or AC output switch button for the mobile energy storage device, allowing the device to output DC and / or AC power by pressing the second sub-button 12b. Specifically, when the power socket for DC output is plugged into an external power source, pressing the second sub-button 12b controls the mobile energy storage device to output DC power; when the power socket for AC output is plugged into an external power source, pressing the second sub-button 12b controls the device to output AC power; and when both the power socket for DC output and the power socket for AC output are plugged into an external power source, pressing the second sub-button 12b controls the device to output both DC and AC power.

[0096] In order to facilitate users to distinguish the functions of different buttons (i.e., the first sub-button 12a and the second sub-button 12b), this application usually provides markings corresponding to their functions on the surface of the buttons exposed on the first housing 11, such as but not limited to printed markings, raised markings, recessed markings, fluorescent markings, etc.

[0097] In this application, as Figure 12 and Figure 13 As shown, both the first sub-button 12a and the second sub-button 12b include a button body 121 and a spring arm 122. Correspondingly, the button through hole 111 includes a first sub-through hole 111a and a second sub-through hole 111b, and the first fixing part 112 includes a first sub-fixing part 112a and a second sub-fixing part 112b. The button body 121 of the first sub-button 12a passes through the first sub-through hole 111a, and the fixing end 1222 of the spring arm 122 of the first sub-button 12a is connected to the first sub-fixing part 112a to achieve a fixed connection between the first sub-button 12a and the first outer shell 11. The button body 121 of the second sub-button 12b passes through the second sub-through hole 111b, and the fixing end 1222 of the spring arm 122 of the second sub-button 12b is connected to the second sub-fixing part 112b to achieve a fixed connection between the second sub-button 12b and the first outer shell 11.

[0098] For ease of description, this application configures the fixing end 1222 of the first sub-button 12a as the first fixing end 1222a and the fixing end 1222 of the second sub-button 12b as the second fixing end 1222b. At least one of the first fixing end 1222a and the second fixing end 1222b is provided with a first anti-mistake part 1226, and the inner surface of the first housing 11 is provided with a second anti-mistake part 113. Among them, one of the first anti-mistake part 1226 and the second anti-mistake part 113 is an anti-mistake protrusion, and the other of the first anti-mistake part 1226 and the second anti-mistake part 113 is an anti-mistake groove. That is, when the first anti-mistake part 1226 is an anti-mistake protrusion, the second anti-mistake part 113 is an anti-mistake groove; and when the first anti-mistake part 1226 is an anti-mistake groove, the second anti-mistake part 113 is an anti-mistake protrusion, and the anti-mistake protrusion is embedded in the anti-mistake groove. Therefore, the combination of the anti-mistake protrusion and the anti-mistake groove can effectively prevent the assembly of the first sub-button 12a and the second sub-button 12b. This prevents the first sub-button 12a from being assembled into the second sub-via hole 111b and the second sub-button 12b from being assembled into the first sub-via hole 111a during the assembly process. This avoids incorrect assembly of the first sub-button 12a and the second sub-button 12b, and effectively prevents mismatch or errors with the preset function when the target button is pressed, thus ensuring the control accuracy of the first sub-button 12a and the second sub-button 12b.

[0099] For example, suppose the first sub-button 12a serves as the power on / off button for the mobile energy storage device, and the second sub-button 12b serves as the DC output switch button for the mobile energy storage device. Also suppose the first sub-button 12a and the second sub-button 12b are installed in reverse. If the user wants to start the mobile energy storage device, they will press the first sub-button 12a. However, because the first sub-button 12a and the second sub-button 12b are installed in reverse, pressing the first sub-button 12a will not control the mobile energy storage device to start, affecting its use. In contrast, this application, through the design of the anti-foolproof protrusion and anti-foolproof groove, and their cooperation, effectively prevents incorrect installation during assembly, thereby effectively preventing incorrect assembly of the first sub-button 12a and the second sub-button 12b, ensuring the functional accuracy of the first sub-button 12a and the second sub-button 12b.

[0100] The following describes the technical solution of this application in more detail, taking the first anti-mistake part 1226 as an anti-mistake groove and the second anti-mistake part 113 as an anti-mistake protrusion.

[0101] As an optional implementation, both the first fixed end 1222a and the second fixed end 1222b are provided with a first error-proofing part 1226, and the shapes of the first error-proofing part 1226 on the first fixed end 1222a and the first error-proofing part 1226 on the second fixed end 1222b are different. In this case, the shape of the second error-proofing part 113 that cooperates with the first error-proofing part 1226 on the first fixed end 1222a is the same as the shape of the first error-proofing part 1226 on the first fixed end 1222a, and the shape of the second error-proofing part 113 that cooperates with the first error-proofing part 1226 on the second fixed end 1222b is the same as the shape of the first error-proofing part 1226 on the second fixed end 1222b.

[0102] Specifically, when the shapes of the first anti-mistake part 1226 on the first fixed end 1222a and the first anti-mistake part 1226 on the second fixed end 1222b are different—for example, the shape of the first anti-mistake part 1226 on the first fixed end 1222a is circular, while the shape of the first anti-mistake part 1226 on the second fixed end 1222b is rectangular—during assembly, the first anti-mistake part 1226 and the second anti-mistake part 113 can only be used when their shapes are the same. The two parts can be fitted together, and neither the first fixed end 1222a nor the second fixed end 1222b will be blocked by the anti-fooling protrusion. This allows the button body 121 of the first sub-button 12a and the second sub-button 12b to be smoothly installed into the corresponding button through hole 111 and mounted on the first housing 11. However, the first anti-fooling part 1226 and the second anti-fooling part 113, which have different shapes, cannot be installed. This avoids the first sub-button 12a and the second sub-button 12b being installed backwards, thus achieving the anti-fooling installation effect of the button structure 12.

[0103] However, this design is not limited to this. In some other optional embodiments, the sizes of the first anti-mistaken parts 1226 of the first sub-button 12a and the second sub-button 12b may be different, or the positions of the first anti-mistaken parts 1226 of the first sub-button 12a and the second sub-button 12b may be different, which can also achieve the anti-mistaken installation effect of the button structure 12. It should be noted that in some other embodiments of this application, the first anti-mistaken parts 1226 of the first sub-button 12a and the second sub-button 12b may have at least two different features in terms of shape, size and position, so as to achieve the anti-mistaken installation effect of the button structure 12.

[0104] As another alternative implementation method, such as Figure 13As shown, only one of the first fixed end 1222a and the second fixed end 1222b is provided with the first anti-mistake part 1226. That is, when the first fixed end 1222a is provided with the first anti-mistake part 1226, the second fixed end 1222b is not provided with the first anti-mistake part 1226, and when the first fixed end 1222a is not provided with the first anti-mistake part 1226, the second fixed end 1222b is provided with the first anti-mistake part 1226. Therefore, during the assembly process, when the first sub-button 12a and the second sub-button 12b are installed in reverse, the anti-mistake protrusion will be pushed against the flat surface without the anti-mistake groove, causing the first sub-button 12a or the second sub-button 12b to be unable to be installed, indicating to the installer that the first sub-button 12a and the second sub-button 12b have been installed in reverse, thus achieving the anti-mistake installation effect of the button structure 12. At the same time, the cooperation between the anti-mistake protrusion and the anti-mistake groove not only has the anti-mistake function, but also has the positioning function.

[0105] In this application, when the first fixing part 112 is a protruding structure protruding from the inner surface of the first housing 11, that is, as mentioned above, when the first fixing part 112 includes a threaded seat 1122 and a first threaded hole 1121 formed on the threaded seat 1122, the surfaces of the first fixing end 1222a and the second fixing end 1222b facing away from the circuit board 13 are recessed inward to form a positioning groove 1225, and the first fixing part 112 is embedded in the positioning groove 1225.

[0106] Furthermore, the second anti-mistake part 113 is an anti-mistake protrusion, and the second anti-mistake part 113, that is, the anti-mistake protrusion, is connected to the outer peripheral surface of the first fixing part 112. The first anti-mistake part 1226 is an anti-mistake groove communicating with the positioning groove 1225, and the first anti-mistake part 1226, that is, the anti-mistake groove, penetrates the surface of the first fixing end 1222a and / or the second fixing end 1222b facing away from the circuit board 13, and the second anti-mistake part 113 is embedded in the first anti-mistake part 1226. Specifically, when the first anti-mistake part 1226 is an anti-mistake groove provided on the first fixed end 1222a, the anti-mistake groove is connected to the positioning groove 1225 and penetrates the surface of the first fixed end 1222a facing away from the circuit board 13, forming a slot to ensure that the anti-mistake protrusion can be inserted into the anti-mistake groove from the slot; when the second anti-mistake part 113 is an anti-mistake groove provided on the second fixed end 1222b, the anti-mistake groove is connected to the positioning groove 1225 and penetrates the surface of the second fixed end 1222b facing away from the circuit board 13, forming a slot to ensure that the anti-mistake protrusion can be inserted into the anti-mistake groove from the slot. When both the first fixed end 1222a and the second fixed end 1222b are provided with anti-fooling grooves, the anti-fooling groove on the first fixed end 1222a is connected to the positioning groove 1225 on the first fixed end 1222a and penetrates the surface of the first fixed end 1222a facing away from the circuit board 13. The anti-fooling groove on the second fixed end 1222b is connected to the positioning groove 1225 on the second fixed end 1222b and penetrates the surface of the second fixed end 1222b facing away from the circuit board 13.

[0107] By adopting the above design method, not only can the cooperation of the anti-mistake protrusion and the anti-mistake groove prevent the first sub-button 12a and the second sub-button 12b from being installed backwards, thus playing a role in guiding the installation of the first sub-button 12a and the second sub-button 12b and improving the installation accuracy of the first sub-button 12a and the second sub-button 12b; at the same time, in addition to cooperating with the anti-mistake groove to achieve the effect of preventing mistaken installation, the anti-mistake protrusion can also serve as a reinforcing rib of the first fixing part 112, strengthening the structural strength of the first fixing part 112 and improving the connection reliability of the button structure 12 and the circuit board 13 on the first housing 11.

[0108] Please see Figures 11 to 13 The circuit board 13 has a first preset direction f1 and a second preset direction f2 set at an angle (e.g., 90°), and the dimension of the circuit board 13 in the first preset direction f1 is greater than or equal to the dimension of the circuit board 13 in the second preset direction f2. For example, the circuit board 13 may have a rectangular plate-like structure, in which case the first preset direction f1 may be the length direction of the circuit board 13, and the second preset direction f2 may be the width direction of the circuit board 13. Furthermore, the circuit board 13 is connected to the first housing 11 at both ends of its first preset direction f1.

[0109] In this application, the first sub-button 12a and the second sub-button 12b are arranged at intervals along the first preset direction f1 on both sides of the circuit board 13. The button body 121 of the first sub-button 12a has a first side 121a and a second side 121b opposite to each other in the first preset direction f1. The second side 121b is closer to the second sub-button 12b than the first side 121a. The button body 121 of the second sub-button 12b has a third side 121c and a fourth side 121d opposite to each other in the first preset direction f1. The third side 121c is closer to the first sub-button 12a than the fourth side 121d. That is, the second side 121b and the third side 121c are located between the first side 121a and the fourth side 121d.

[0110] Furthermore, the plurality of elastic arms 122 in the first sub-button 12a of this application include a first elastic arm 122a and a second elastic arm 122b. The first elastic arm 122a is disposed on the first side 121a, and its connecting end 1221 is connected to the side of the first side 121a facing away from the second sub-button 12b. The second elastic arm 122b is disposed on the second side 121b, and its connecting end 1221 is connected to the side of the second side 121b facing the second sub-button 12b. The plurality of elastic arms 122 in the second sub-button 12b include a third elastic arm 122c and a fourth elastic arm 122d. The third elastic arm 122c is disposed on the third side 121c, and its connecting end 1221 is connected to the side of the third side 121c facing the first sub-button 12a. The fourth elastic arm 122d is disposed on the fourth side 121d, and its connecting end 1221 is connected to the side of the fourth side 121d facing away from the first sub-button 12a.

[0111] In this application, the length of the first bullet lever arm 122a along its extension direction is greater than the length of the second bullet lever arm 122b along its extension direction, and / or the length of the fourth bullet lever arm 122d along its extension direction is greater than the length of the third bullet lever arm 122c along its extension direction.

[0112] Since the size of circuit board 13 in the first preset direction f1 is greater than or equal to the size of circuit board 13 in the second preset direction f2, and circuit board 13 is only fixedly connected to the first housing 11 at both ends in the first preset direction f1, and there is no connection or support position in the middle position of circuit board 13 in the first preset direction f1, and since according to the principle of mechanics, the longer the elastic arm 122, the greater the torque, the longer the first elastic arm 122a along its extension direction is made to be greater than the longer the second elastic arm 122b along its extension direction, so that the first elastic arm 122a is longer than the second elastic arm 122b. The lever arm 122b is easier to bear force and deforms more, so that when the user presses the first sub-button 12a, the overall force can be distributed more in the first bullet lever arm 122a. The first bullet lever arm 122a is close to the end of the circuit board 13 in the first preset direction f1, so that the end of the circuit board 13 in the first preset direction f1 is subjected to force first, that is, the end of the circuit board 13 that is connected and fixed is subjected to force first, avoiding the position of the circuit board 13 that is off-center, lacks connection and support in the first preset direction f1 being subjected to force first, thereby reducing the risk of the circuit board 13 deforming or even breaking.

[0113] Similarly, the length of the fourth bullet arm 122d along its extension direction is greater than that of the third bullet arm 122c along its extension direction. This makes the fourth bullet arm 122d easier to bear force and deform more than the third bullet arm 122. As a result, when the user presses the first sub-button 12a, the overall force can be distributed more on the fourth bullet arm 122d. Since the fourth bullet arm 122d is close to the other end of the circuit board 13 in the first preset direction f1, the other end of the circuit board 13 in the first preset direction f1 can be stressed first. That is, the other end of the circuit board 13 that is connected and fixed is stressed first. This avoids the circuit board 13 being stressed first at the off-center, unconnected, and unsupported position in the first preset direction f1, thereby reducing the risk of deformation or even breakage of the circuit board 13.

[0114] In some optional embodiments, the first bullet force arm 122a and the second bullet force arm 122b are symmetrically arranged, and the third bullet force arm 122c and the fourth bullet force arm 122d are symmetrically arranged. This allows the button structure 12 to be subjected to more even force on both sides of the circuit board 13 in the first preset direction, avoiding the problem of button malfunction caused by the button structure 12 shifting during the pressing process.

[0115] Please see Figure 11 , Figure 12 and Figure 14As shown, the first bullet arm 122a and the second bullet arm 122b in this application are connected by a connecting rib 123. The fixed end 1222 of the first bullet arm 122a is connected to the first fixing part 112. The fixed end 1222 of the second bullet arm 122b is not connected to the first housing 11 through the first fixing part 112. That is, the first housing 11 does not have a first fixing part 112 connected to the second bullet arm 122b. The fixed end 1222 of the first bullet arm 122a is connected to one end of the circuit board 13 in the first preset direction f1. The fixed end 1222 of the second bullet arm 122b is provided with a positioning part 132 or a mating part 1223. In this way, the second bullet arm 122b can be connected to the first housing 11 by means of the first bullet arm 122a. Therefore, even if the second bullet arm 122b is not fixedly connected to the first housing 11, it does not affect the deformation of the second bullet arm 122b when the button body 121 is pressed. That is, when the button body 121 is pressed, the second bullet arm 122b, which is not fixedly connected to the first housing 11, can still deform to distribute the force on the button body 121 of the first sub-button 12a. At the same time, since it is not connected to the first housing 11 or the circuit board 13... A positioning part 132 or a mating part 1223 is provided on the fixed end 1222, that is, the positioning part 132 or the mating part 1223 is not provided on the fixed end 1222 that is connected to the first fixed part 112 and the circuit board 13. This allows the fixed end 1222 to have sufficient space to connect with the first fixed part 112 and the circuit board 13, and avoids the positioning part 132 or the mating part 1223 from interfering with the fixed connection between the fixed end 1222 and the first fixed part 112 and the circuit board 13, so as to ensure the reliability of the connection between the fixed end 1222, the first fixed part 112 and the circuit board 13.

[0116] Similarly, the third bullet arm 122c and the fourth bullet arm 122d are connected by a connecting rib 123. The fixed end 1222 of the fourth bullet arm 122d is connected to the first fixing part 112, while the fixed end 1222 of the third bullet arm 122c is not connected to the first housing 11 through the first fixing part 112. That is, the first housing 11 does not have a first fixing part 112 connected to the third bullet arm 122c. The fixed end 1222 of the fourth bullet arm 122d is connected to the other end of the circuit board 13 in the first preset direction f1. The fixed end 1222 of the third bullet arm 122c is provided with a positioning part 132 or a mating part 1223. In this way, the third bullet arm 122c can be connected to the first housing 11 by means of the fourth bullet arm 122d. Therefore, even if the third bullet arm 122c is not fixedly connected to the first housing 11, it does not affect the deformation of the third bullet arm 122c when the button body 121 is pressed. That is, when the button body 121 is pressed, the third bullet arm 122c, which is not fixedly connected to the first housing 11, can still deform to distribute the force on the button body 121 of the second sub-button 12b. At the same time, since it is not connected to the first housing 11 or the circuit board 13... A positioning part 132 or a mating part 1223 is provided on the fixed end 1222, that is, the positioning part 132 or the mating part 1223 is not provided on the fixed end 1222 that is connected to the first fixed part 112 and the circuit board 13. This allows the fixed end 1222 to have sufficient space to connect with the first fixed part 112 and the circuit board 13, and avoids the positioning part 132 or the mating part 1223 from interfering with the fixed connection between the fixed end 1222 and the first fixed part 112 and the circuit board 13, so as to ensure the reliability of the connection between the fixed end 1222, the first fixed part 112 and the circuit board 13.

[0117] This invention also discloses an energy storage system having a portable energy storage device as described in any of the foregoing embodiments. Specifically, the energy storage system may include an electrical device and a portable energy storage device as described in any of the foregoing embodiments, the portable energy storage device being used to supply power to the electrical device. It is understood that an energy storage system having the portable energy storage device described above can bring the same or similar beneficial effects as the portable energy storage device, as specifically described in the embodiments of the portable energy storage device, which will not be repeated here.

[0118] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0119] Furthermore, the embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the content of this specification should not be construed as a limitation of this application, and the protection scope of this application should be determined by the appended claims.

Claims

1. A housing assembly, characterized in that, The housing assembly includes: The first housing (11) has a key through hole (111) that passes through its interior and exterior, and a first fixing part (112) is provided on the inner surface of the first housing (11). A button structure (12) includes a button body (121) and a spring arm (122). The button body (121) is inserted into the button through hole (111), and the button body (121) has a button protrusion (1211) protruding towards the inside of the first outer shell (11). The spring arm (122) is located inside the first outer shell (11). The spring arm (122) has a connecting end (1221) and a fixing end (1222) arranged opposite to each other along its extension direction. The connecting end (1221) is connected to the button body (121), and the fixing end (1222) is connected to the first fixing part (112). A circuit board (13) is disposed inside the first housing (11) and located on the side of the button structure (12) facing away from the button through hole (111). A control button (131) is protruding from the surface of the circuit board (13) facing the button structure (12), and the control button (131) is provided corresponding to the button protrusion (1211). One of the circuit board (13) and the fixed end (1222) is provided with a positioning part (132), and the other of the circuit board (13) and the fixed end (1222) is provided with a mating part (1223), and the mating part (1223) is connected to the positioning part (132). The button structure (12) includes a plurality of elastic arms (122) arranged circumferentially along the button body (121); The first fixing part (112) is multiple; The circuit board (13) has a first preset direction (f1) and a second preset direction (f2) set at an angle. The circuit board (13) is connected to the first housing (11) at both ends of the first preset direction (f1). The button structure (12) includes a first sub-button (12a) and a second sub-button (12b) arranged at intervals along the first preset direction (f1). The first sub-button (12a) and the second sub-button (12b) each include the button body (121) and a plurality of elastic arms (122). The button body (121) of the first sub-button (12a) has a first side (121a) and a second side (121b) opposite to each other in the first preset direction (f1), and the second sub-button (12b) has a third side (121c) and a fourth side (121d) opposite to each other in the first preset direction (f1). The plurality of elastic arms (122) in the first sub-button (12a) include a first elastic arm (122a) and a second elastic arm (122b). The first elastic arm (122a) is disposed on the first side (121a), and the second elastic arm (122b) is disposed on the second side (121b). The plurality of elastic arms (122) in the second sub-button (12b) include a third elastic arm (122c) and a fourth elastic arm (122d). The third elastic arm (122c) is disposed on the third side (121c), and the fourth elastic arm (122d) is disposed on the fourth side (121d). The length of the first bullet lever arm (122a) along its extension direction is greater than the length of the second bullet lever arm (122b) along its extension direction, and / or the length of the fourth bullet lever arm (122d) along its extension direction is greater than the length of the third bullet lever arm (122c) along its extension direction.

2. The housing assembly according to claim 1, characterized in that, The circuit board (13) abuts against the fixed end (1222) in the depth direction of the key through hole (111).

3. The housing assembly according to claim 1, characterized in that, The circuit board (13) is provided with a second fixing part (133), which is connected to the fixing end (1222) to fix the circuit board (13) inside the first outer shell (11).

4. The housing assembly according to claim 1, characterized in that, At least one of the first fixing parts (112) is connected to the fixing end (1222) of the elastic arm (122).

5. The housing assembly according to claim 4, characterized in that, The fixed ends (1222) of any two adjacent elastic arms (122) are connected by connecting ribs (123); or, The number of elastic arms (122) is even, and the fixed ends (1222) of each pair of elastic arms (122) are connected by connecting ribs (123), and the fixed end (1222) of each elastic arm (122) is connected to one connecting rib (123).

6. The housing assembly according to claim 5, characterized in that, In the two elastic arms (122) connected by the connecting rib (123), the fixed end (1222) of one elastic arm (122) is connected to the first fixing part (112), the fixed end (1222) of the other elastic arm (122) is not connected to the first fixing part (112), and the fixed end (1222) of the other elastic arm (122) is provided with the mating part (1223) or the positioning part (132).

7. The housing assembly according to claim 4, characterized in that, The size of the circuit board (13) in the first preset direction (f1) is greater than or equal to the size of the circuit board (13) in the second preset direction (f2); The second side (121b) is closer to the second sub-button (12b) than the first side (121a), and the third side (121c) is closer to the first sub-button (12a) than the fourth side (121d).

8. The housing assembly according to claim 7, characterized in that, The first bullet lever arm (122a) and the second bullet lever arm (122b) are symmetrically arranged, and the third bullet lever arm (122c) and the fourth bullet lever arm (122d) are symmetrically arranged.

9. The housing assembly according to claim 7, characterized in that, The number of the first fixing parts (112) is less than the number of the elastic arms (122); The first bullet arm (122a) and the second bullet arm (122b) are connected by a connecting rib (123). The fixed end (1222) of the first bullet arm (122a) is connected to the first fixing part (112), and the fixed end (1222) of the second bullet arm (122b) is not connected to the first housing (11) through the first fixing part (112). The fixed end (1222) of the first bullet arm (122a) is connected to one end of the circuit board (13) in the first preset direction (f1). The fixed end (1222) of the second bullet arm (122b) is provided with the positioning part (132) or the mating part (1223). The third bullet arm (122c) and the fourth bullet arm (122d) are connected by a connecting rib (123). The fixed end (1222) of the fourth bullet arm (122d) is connected to the first fixing part (112). The fixed end (1222) of the third bullet arm (122c) is not connected to the first housing (11) through the first fixing part (112). The fixed end (1222) of the fourth bullet arm (122d) is connected to the other end of the circuit board (13) in the first preset direction (f1). The fixed end (1222) of the third bullet arm (122c) is provided with the positioning part (132) or the mating part (1223).

10. The housing assembly according to claim 1, characterized in that, The button structure (12) includes a first sub-button (12a) and a second sub-button (12b). Both the first sub-button (12a) and the second sub-button (12b) include the button body (121) and the elastic arm (122). The fixed end (1222) of the first sub-button (12a) is configured as the first fixed end (1222a), and the fixed end (1222) of the second sub-button (12b) is configured as the second fixed end (1222b). At least one of the first fixed end (1222a) and the second fixed end (1222b) is provided with a first anti-fooling part (1226), and the inner surface of the first outer shell (11) is provided with a second anti-fooling part (113). One of the first anti-mistake part (1226) and the second anti-mistake part (113) is an anti-mistake protrusion, and the other of the first anti-mistake part (1226) and the second anti-mistake part (113) is an anti-mistake groove, and the anti-mistake protrusion is embedded in the anti-mistake groove.

11. The housing assembly according to claim 10, characterized in that, Only one of the first fixing end (1222a) and the second fixing end (1222b) is provided with the first anti-fooling part (1226); or, Both the first fixed end (1222a) and the second fixed end (1222b) are provided with the first anti-mistake part (1226). The shapes of the first anti-mistake part (1226) on the first fixed end (1222a) and the first anti-mistake part (1226) on the second fixed end (1222b) are different, and / or the sizes of the first anti-mistake part (1226) on the first fixed end (1222a) and the first anti-mistake part (1226) on the second fixed end (1222b) are different.

12. The housing assembly according to claim 10, characterized in that, The first fixing part (112) is a protruding structure protruding on the inner surface of the first outer shell (11), and the second anti-mistake part (113) is an anti-mistake protrusion, which is connected to the outer peripheral surface of the first fixing part (112). The first fixing end (1222a) and / or the second fixing end (1222b) are recessed inward on the surface of the circuit board (13) to form a positioning groove (1225). The first anti-mistake part (1226) is an anti-mistake groove communicating with the positioning groove (1225), and the anti-mistake groove passes through the surface of the first fixing end (1222a) and / or the second fixing end (1222b) facing away from the circuit board (13). The first fixing part (112) is embedded in the positioning groove (1225), and the second anti-mistake part (113) is embedded in the first anti-mistake part (1226).

13. A mobile energy storage device, characterized in that, The mobile energy storage device includes a second housing (20), an energy storage unit (30), and a housing assembly (10) as described in any one of claims 1-12. The second housing (20) and the first housing (11) are connected and an inner cavity (21) is formed between them. The energy storage unit (30) is built into the inner cavity (21), and the circuit board (13) is electrically connected to the energy storage unit (30).

14. An energy storage system, characterized in that, The energy storage system has the mobile energy storage device as described in claim 13.

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