Energy storage device and energy storage system

Abstract

The application provides an energy storage device and an energy storage system. The energy storage device comprises a first box and a second box which are stacked, the first box is provided with a mounting pin, and the second box is provided with a self-locking structure. The self-locking structure comprises a first hole, a movable piece arranged in the first hole, and a driving piece. The inner diameter of the first hole gradually decreases from one end away from the first box to one end close to the first box. The movable piece and the inner wall of the first hole form a gap for the mounting pin to extend into. The driving piece is used to drive the movable piece to abut against the mounting pin to lock the mounting pin. The driving piece is also used to drive the movable piece to separate from the mounting pin to unlock the mounting pin. The energy storage device and the energy storage system provided by the application are convenient to assemble and disassemble, and are beneficial to improving the assembly efficiency and disassembly and maintenance efficiency of the energy storage device.

Description

Technical Field

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

[0002] Energy storage devices are frequently used in various electrical appliances to store and supply the required power. Currently, in the field of energy storage, multiple battery enclosures are often combined to form an energy storage device to provide sufficient capacity to meet backup power needs. At the same time, in order to save space occupied by energy storage devices and improve space utilization, multiple battery enclosures are often stacked together to save installation space.

[0003] In existing energy storage devices, to improve the stability of the device formed by stacking multiple battery cells, adjacent battery cells are usually locked together with screws. However, locking adjacent cells together with screws makes the assembly and disassembly process of the energy storage device cumbersome, affecting the efficiency of assembly and disassembly / maintenance. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this application provides an energy storage device and system that are easy to assemble and disassemble, which helps to improve the efficiency of energy storage device assembly and disassembly and maintenance.

[0005] On one hand, this application provides an energy storage device, including a first housing and a second housing stacked together. The first housing is provided with a mounting pin, and the second housing is provided with a self-locking structure. The self-locking structure has a first hole, a movable member disposed in the first hole, and a driving member. The inner diameter of the first hole gradually decreases from one end away from the first housing to one end close to the first housing. The movable member forms a gap with the inner wall of the first hole or with the movable member itself for the mounting pin to extend into. The mounting pin is installed in the gap in the first hole. The driving member is used to drive the movable member to separate from the mounting pin to unlock the mounting pin.

[0006] In one possible implementation, the self-locking structure further includes a sleeve movably received within the first hole along the axial direction of the first hole; the sleeve has a through hole extending radially through the sleeve, and the movable member is movably disposed within the through hole along the radial direction of the sleeve, the movable member protruding from the inner and outer sidewalls of the sleeve.

[0007] In one possible implementation, there are multiple movable parts and multiple through holes, the number of which is equal to the number of movable parts; each movable part is movably disposed within one of the through holes along the radial direction of the sleeve, and the multiple movable parts surround to form the gap.

[0008] In one possible implementation, the sleeve is flared, and the outer diameter of the end of the sleeve near the first housing is smaller than the outer diameter of the end of the sleeve away from the first housing.

[0009] In one possible implementation, the center lines of the plurality of through holes are all located on the same plane, and the distance between any two adjacent through holes is equal; the centers of the plurality of movable members are all located on the same plane, and the distance between any two adjacent movable members is equal.

[0010] In one possible implementation, the self-locking structure further includes an elastic element, the first hole is a blind hole, one end of the elastic element abuts against the bottom of the first hole, and the other end of the elastic element extends into the sleeve and abuts against the movable element.

[0011] In one possible implementation, the self-locking structure further includes a first fixing plate and a first fixing member. The first fixing plate covers the opening of the first hole near the opening of the first housing. The first fixing plate has a mounting hole and a through hole. The first fixing member passes through the mounting hole and is fixedly connected to the second housing. The mounting pin passes through the through hole and is inserted into the gap.

[0012] In one possible implementation, the driving element is an electromagnet, and the sleeve is a magnetic element. The driving element is used to generate a magnetic field after being energized and drive the sleeve to move in the first hole toward a direction away from the first housing, thereby causing the movable element to move in the first hole toward a direction away from the first housing.

[0013] In one possible implementation, the self-locking structure further has a third hole, both the first hole and the third hole being blind holes. The third hole and the first hole are arranged opposite to each other along the stacking direction of the second housing and the first housing. The opening of the third hole faces away from the first housing, and the driving member is fixed in the third hole.

[0014] In one possible implementation, the self-locking structure further includes a second fixing plate and a second fixing member. The second fixing plate covers the opening of the third hole, and the second fixing member passes through the second fixing plate and is fixedly connected to the second housing. The driving member is received and fixed within the space formed by the third hole and the second fixing plate.

[0015] On the other hand, this application provides an energy storage system, including:

[0016] The aforementioned energy storage device;

[0017] Power module, and

[0018] The control module is electrically connected to the drive unit, the power module, and the control module of the energy storage device; the power module is used to supply power to the drive unit, and the control module is used to control the power supply and power disconnection between the power module and the drive unit.

[0019] In one possible implementation, the control module includes a mechanical switch for controlling the power supply module and the drive unit to switch on and off.

[0020] In one possible implementation, the control module includes a communication module and a remote control module, the remote control module and the communication module being communicatively connected, the remote control module being used to send control messages to the communication module to control the power supply module and the drive unit to switch on and off.

[0021] The energy storage device and system provided in this application utilize a self-locking structure where the mounting pin of the first housing is inserted into the second housing. The first and second housings are secured simply by stacking the second housing onto the first housing, aligning the mounting pin with the self-locking structure. This simplifies the stacking and securing of the first and second housings and improves the assembly efficiency of the energy storage device. The self-locking structure includes a driving component and a movable component. The driving component moves the movable component within a first hole. Since the inner diameter of the first hole gradually decreases from the end furthest from the first housing to the end closest to it, a gap is formed between the movable component and the inner wall of the first hole, allowing the mounting pin to insert. Under its own weight, the movable component falls into the first hole at the end closest to the first housing. Supported by the inner wall of the first hole, the movable component abuts against the mounting pin to lock it in place. The driving component then drives the movable component to separate from the mounting pin to unlock it. This facilitates the removal of the second housing from the first housing, improving the disassembly efficiency of the energy storage device. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are merely some implementation methods provided by the embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1This is a perspective sectional view of the exploded structure of an energy storage device according to an embodiment of this application;

[0024] Figure 2 This is a perspective sectional view of the assembly structure of an energy storage device according to an embodiment of this application;

[0025] Figure 3 yes Figure 1 The diagram shows a partial enlarged view of the energy storage device at point A.

[0026] Figure 4 yes Figure 2 The diagram shows a partially enlarged view of the energy storage device at point B:

[0027] Figure 5 This is an exploded structural diagram of a first housing provided in an embodiment of this application;

[0028] Figure 6 This is an exploded structural diagram of a second housing provided in one embodiment of this application;

[0029] Figure 7 This is an exploded structural diagram of a self-locking structure provided in an embodiment of this application;

[0030] Figure 8 This is a top view of a second housing provided in one embodiment of this application;

[0031] Figure 9 yes Figure 8 The second housing shown is a cross-sectional view at CC.

[0032] Figure 10 This is a structural diagram of an energy storage system provided in one embodiment of this application. Detailed Implementation

[0033] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. 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.

[0034] The following descriptions of the embodiments are with reference to the accompanying drawings, illustrating specific embodiments in which this application can be implemented. Directional terms used in the description of this application, such as "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "top surface," "side surface," "bottom surface," "top wall," "side wall," "bottom wall," "inner side wall," and "peripheral side wall," are merely for reference to the accompanying drawings. Therefore, the use of directional terms is for better and clearer explanation and understanding of this application, and does not indicate or imply that the referred device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In the description of this application, the terms "connection" and "linkage," unless otherwise specified, include both direct connection (linkage) and indirect connection (linkage).

[0035] Energy storage devices are frequently used in various electrical appliances to store and supply the required power. Currently, in the field of energy storage, multiple battery enclosures are often combined to form an energy storage device to provide sufficient capacity to meet backup power needs. At the same time, in order to save space occupied by energy storage devices and improve space utilization, multiple battery enclosures are often stacked together to save installation space.

[0036] In existing energy storage devices, to improve the stability of the device formed by stacking multiple battery cells, adjacent battery cells are typically secured with screws. However, this method of securing adjacent cells with screws makes the assembly and disassembly process cumbersome, affecting the efficiency of assembly and maintenance. Based on the above technical problems, this application provides an energy storage device and system that are easy to assemble and disassemble.

[0037] Please see Figures 1 to 9 , Figure 1 This is a perspective sectional view of the exploded structure of an energy storage device according to an embodiment of this application. Figure 2 This is a perspective sectional view of the assembly structure of an energy storage device according to an embodiment of this application. Figure 3 yes Figure 1 The diagram shown is a partial enlarged view of the energy storage device at point A. Figure 4 yes Figure 2 The diagram shown is a partial enlarged view of the energy storage device at point B. Figure 5 This is an exploded structural diagram of a first housing provided in an embodiment of this application. Figure 6 This is an exploded structural diagram of a second housing provided in one embodiment of this application. Figure 7 This is an exploded structural diagram of a self-locking structure provided in an embodiment of this application. Figure 8 This is a top view of a second housing provided in one embodiment of this application. Figure 9yes Figure 8 The second housing shown is a cross-sectional view at CC.

[0038] The energy storage device 100 provided in this application includes a first housing 101 and a second housing 103, which are stacked together, with the second housing 103 stacked on top of the first housing 101. A mounting pin 10 is provided on the first housing 101, and a self-locking structure 30 is provided on the second housing 103. The mounting pin 10 is inserted into the self-locking structure 30, which locks the mounting pin 10, thus fixing the mounting pin 10 to the self-locking structure 30. This fixes the second housing 103 and the first housing 101, improving the stability of the stacked structure formed by the first housing 101 and the second housing 103.

[0039] The self-locking structure 30 includes a first hole 301, one opening of which faces the first housing 101. The inner diameter of the first hole 301 gradually decreases from the end furthest from the first housing 101 to the end closest to the first housing 101. The self-locking structure 30 also includes a movable member 31 and a driving member 32. The movable member 31 is movably received within the first hole 301, and a gap is formed between the movable member 31 and the inner wall of the first hole 301 for the mounting pin 10 to insert into, or the movable member 31 itself forms a gap for the mounting pin 10 to insert into, with the mounting pin 10 inserted into the gap within the first hole 301. The driving member 32 is used to drive the movable member 31 to separate from the mounting pin 10 to unlock the mounting pin 10, thereby allowing the mounting pin 10 to be pulled out of the self-locking structure 30.

[0040] The energy storage device 100 provided in this application is inserted into the self-locking structure 30 of the second housing 103 via a mounting pin 10 of the first housing 101. The first and second housings 101 are fixed simply by stacking the second housing 103 onto the first housing 101, aligning the mounting pin 10 with the self-locking structure 30. This simplifies the stacking and fixing of the first and second housings 101 and 103, improving the assembly efficiency of forming the energy storage device 100. The self-locking structure 30 includes a driving member 32 and a movable member 31. The driving member 32 drives the movable member 31 to move within the first hole 301. Since the inner diameter of the first hole 301 gradually decreases from the end furthest from the first housing 101 to the end closest to the first housing 101, a gap is formed between the movable member 31 and the inner wall of the first hole 301, allowing the mounting pin 10 to extend into it. Under its own weight, the movable component 31 falls into the end of the first hole 301 near the first housing 101. Supported by the inner wall of the first hole 301, the movable component 31 abuts against the mounting pin 10 to lock it in place. That is, the movable component 31 is engaged between the inner wall of the first hole 301 and the mounting pin 10, preventing the mounting pin 10 from being pulled out of the self-locking structure 30. The driving component 32 can drive the movable component 31 to separate from the mounting pin 10 to unlock it. Specifically, the driving component 32 can drive the movable component 31 from the end of the first hole 301 near the first housing 101 to the end of the first hole 301 away from the first housing 101, thereby separating the movable component 31 from the mounting pin 10. This facilitates the removal of the second housing 103 from the first housing 101, improving the disassembly efficiency of the energy storage device 100.

[0041] In one specific embodiment, the first housing 101 includes a first shell 1011 and a first cover plate 1012, with the first cover plate 1012 covering the first shell 1011. The first shell 1011 and the first cover plate 1012 enclose a first receiving space 1013, which is used to receive the battery module so that the energy storage device 100 can provide electrical energy to the load device. The second housing 103 includes a second shell 1031 and a second cover plate 1032, with the second cover plate 1032 covering the second shell 1031. The second shell 1031 and the second cover plate 1032 enclose a second receiving space 1033, which is used to receive the battery module so that the energy storage device 100 can provide electrical energy to the load device. After the first housing 101 and the second housing 103 are stacked, the periphery of the first housing 1011 abuts against the periphery of the second housing 1031, and the first cover plate 1012 abuts against the side of the second housing 1031 facing away from the second cover plate 1032. A mounting pin 10 is disposed on the side of the first cover plate 1012 facing the second housing 1031 facing away from the second cover plate 1032, and a self-locking structure 30 is disposed on the side of the second housing 1031 facing the first cover plate 1012. When the first housing 101 and the second housing 103 are stacked, the mounting pin 10 is inserted into the self-locking structure 30, making the structure of the energy storage device 100 formed by the stacking of the first housing 101 and the second housing 103 more stable. The mounting pin 10 is installed on the side of the first cover plate 1012 facing the second housing 1031 away from the second cover plate 1032, and the self-locking structure 30 is installed on the side of the second housing 1031 facing the first cover plate 1012, so that the mounting pin 10 and the self-locking structure 30 will not occupy additional circumferential space of the energy storage device 100, which is beneficial to improving the circumferential space utilization of the energy storage device 100.

[0042] In this embodiment, the first cover plate 1012 and the first housing 1011 are fixed together by screws, and the first cover plate 1012 is provided with countersunk holes for screws to pass through, so that the screws will not be exposed on the surface of the first cover plate 1012 facing the second housing 103, which is beneficial to improving the space utilization of the energy storage device 100 in the stacking direction.

[0043] In this embodiment, a waterproof inner shell is provided inside the first housing 1011, and a first cover plate 1012 is provided over the opening of the waterproof inner shell. The first cover plate 1012 and the waterproof inner shell together form a first receiving space 1013 for receiving the battery module. By providing a waterproof inner shell inside the first housing 1011, the waterproof performance of the first housing 101 for the battery module is improved.

[0044] In this embodiment, a waterproof inner shell is provided inside the second housing 1031, and a second cover plate 1032 is provided over the opening of the waterproof inner shell. The second cover plate 1032 and the waterproof inner shell together form a second receiving space 1033 for receiving the battery module. The waterproof inner shell inside the second housing 1031 improves the waterproof performance of the second housing 103 for the battery module.

[0045] Understandably, in some other embodiments, the mounting pin 10 may be disposed on the peripheral sidewall of the first housing 1011, and the mounting pin 10 may protrude from the side of the first cover plate 1012 facing the second housing 103. The self-locking structure 30 may be disposed on the peripheral sidewall of the second housing 1031. When the first housing 101 and the second housing 103 are stacked, the mounting pin 10 may be inserted into the self-locking structure 30. This application does not limit this.

[0046] In this embodiment, the first cover plate 1012 is provided with two spaced-apart mounting pins 10, and the second housing 1031 is provided with two self-locking structures 30. One mounting pin 10 on the first cover plate 1012 is inserted into a corresponding self-locking structure 30 on the second housing 1031, and the other mounting pin 10 on the first cover plate 1012 is inserted into the other corresponding self-locking structure 30 on the second housing 1031. By having the two mounting pins 10 on the first cover plate 1012 respectively inserted into the two self-locking structures 30 on the second housing 1031, the structural stability of the energy storage device 100 formed by stacking the first housing 101 and the second housing 103 is improved.

[0047] It is understood that in some other embodiments, the number of mounting pins 10 provided on the first cover plate 1012 can be one, three, four, etc., and the number of self-locking structures 30 provided on the second housing 1031 can be one, three, four, etc., as long as the number of mounting pins 10 and the number of self-locking structures 30 are equal, this application does not impose any restrictions on this.

[0048] It is understood that in some other embodiments, the energy storage device 100 also includes a base, and the base, the first housing 101, and the second housing 103 are stacked sequentially to form the energy storage device 100. This application does not limit this. The base is provided to protect the energy storage device 100. Specifically, the base is provided with the aforementioned mounting pin 10, and the first housing 101 is provided with the aforementioned self-locking structure 30. The mounting pin 10 on the base is inserted into the self-locking structure 30 on the first housing 101 to make the stacking between the base and the first housing 101 more stable.

[0049] Understandably, in some other embodiments, the energy storage device 100 also includes a top cover. The first housing 101, the second housing 103, and the top cover are stacked sequentially to form the energy storage device 100, and this application does not limit this. The top cover is provided to protect the energy storage device 100. Specifically, the top cover is provided with the aforementioned self-locking structure 30, and the second housing 103 is provided with the aforementioned mounting pin 10. The mounting pin 10 on the second housing 103 is inserted into the self-locking structure 30 of the top cover to make the stacking between the top cover and the second housing 103 more stable.

[0050] In one embodiment, the self-locking structure 30 further includes a sleeve 33 having a hollow cavity extending through the sleeve 33 along its axial direction. The sleeve 33 is movably received within the first hole 301 along its axial direction. The sleeve 33 also has a through hole 331 extending through the sleeve 33 radially, communicating with the hollow cavity. A movable member 31 is movably disposed within the through hole 331 along the radial direction of the sleeve 33. The movable member 31 protrudes from the inner and outer walls of the sleeve 33, forming an opening in the through hole 331 near the inner wall of the first hole 301, and another portion of the movable member 31 protrudes from the through hole 331 near the opening of the mounting pin 10.

[0051] When the mounting pin 10 is inserted into the self-locking structure 30, the mounting pin 10 first abuts against the movable member 31 and moves the movable member 31 and the sleeve 33 toward the bottom wall of the first hole 301. As the inner diameter of the first hole 301 gradually increases, the movable member 31 moves radially away from the mounting pin 10, so that the mounting pin 10 can be smoothly inserted into the gap formed between the movable member 31 and the inner wall of the first hole 301, which is beneficial to improving the installation efficiency of the energy storage structure formed by the first housing 101 and the second housing 103.

[0052] When the mounting pin 10 is fully inserted into the self-locking structure 30, due to the weight of the mounting pin 10 and the movable member 31, they move towards the opening of the first hole 301. As the inner diameter of the first hole 301 gradually decreases, the movable member 31 moves radially towards the mounting pin 10, so that the movable member 31 abuts against the mounting pin 10, thereby locking the mounting pin 10 in the self-locking structure 30. At this time, the first housing 101 and the second housing 103 are stably stacked.

[0053] When it is necessary to disassemble and separate the first housing 101 and the second housing 103, the moving part 31 and the sleeve 33 are driven by the driving part 32 to move toward the bottom wall of the first hole 301. As the inner diameter of the first hole 301 gradually increases, the moving part 31 moves radially away from the mounting pin 10, so that the mounting pin 10 can be smoothly pulled out from the gap formed between the moving part 31 and the inner wall of the first hole 301, which helps to improve the disassembly efficiency of the energy storage device 100 formed by the first housing 101 and the second housing 103.

[0054] In one embodiment, there are multiple movable parts 31 and multiple through holes 331, the number of which is equal to the number of movable parts 31. The center lines of the multiple through holes 331 are all located within the same planar cavity, and the center line of each through hole 331 is perpendicular to the central axis of the sleeve 33. Each movable part 31 is radially movably disposed within a through hole 331 of the sleeve 33, and the multiple movable parts 31 surround to form a gap. By arranging multiple movable parts 31, and ensuring that the center lines of the multiple through holes 331 are all located within the same planar cavity, and that the center line of each through hole 331 is perpendicular to the central axis of the sleeve 33, that is, the movable parts 31 are located on the same plane perpendicular to the central axis of the sleeve 33, the locking effect of the movable parts 31 on the mounting pin 10 is improved.

[0055] Specifically, in this embodiment, there are three movable parts 31, and correspondingly, there are three through holes 331 on the sleeve 33. In this embodiment, the multiple through holes 331 are evenly distributed on the sleeve 33, that is, the distance between the center lines of any two adjacent through holes 331 is equal, thereby making the multiple movable parts 31 disposed in the multiple through holes 331 evenly distributed, which is beneficial to improving the locking effect of the movable parts 31 on the mounting pin 10.

[0056] It is understood that in some other embodiments, the number of movable parts 31 can be one, two, four, etc., and the number of through holes 331 on the sleeve 33 can be one, two, four, etc., as long as the number of movable parts 31 and the number of through holes 331 are equal. This application does not impose any restrictions on this.

[0057] Understandably, in some other embodiments, the number of movable parts 31 is one, and the inner sidewall of the sleeve 33 is provided with a protrusion at the position corresponding to the movable mounting pin 10. The protrusion and the movable part 31 cooperate to lock the mounting pin 10. This application does not limit this.

[0058] Specifically, in this embodiment, the movable component 31 is a sphere, and the through hole 331 is a circular hole, so that the movement of the movable component 31 is smoother. It is understood that in some other embodiments, the movable component 31 can be an ellipsoid, a cylinder, a frustum, etc., and this application does not limit it.

[0059] In one embodiment, the sleeve 33 is flared, and the outer diameter of the end of the sleeve 33 near the first housing 101 is smaller than the outer diameter of the end of the sleeve 33 away from the first housing 101. As the sleeve 33 and the movable member 31 move from the end of the first hole 301 near the first housing 101 to the end of the first hole 301 away from the first housing 101, the inner diameter of the first hole 301 gradually increases from the end near the first housing 101 to the end away from the first housing 101. The flared shape of the sleeve 33, and the smaller outer diameter of the end of the sleeve 33 near the first housing 101 than the end away from the first housing 101, prevents the movable member 31 from falling out of the through hole 331 between the outer wall of the sleeve 33 and the inner wall of the first hole 301, thus improving the stability of the self-locking structure 30.

[0060] In one embodiment, the self-locking structure 30 further includes an elastic element 34. The first hole 301 is a blind hole. One end of the elastic element 34 abuts against the bottom of the first hole 301, and the other end of the elastic element 34 extends into the sleeve 33 and abuts against the movable member 31. The elastic element 34 allows the movable member 31 to be stably positioned on the side of the first hole 301 near the first housing 101 under the elastic force of the elastic element 34, so that the movable member 31 abuts against and locks the mounting pin 10. Simultaneously, the elastic element 34 prevents the movable member 31 from easily separating from the mounting pin 10 when the energy storage device 100 experiences shaking or other phenomena, without external force, thus improving the stability of the movable member 31 within the first hole 301.

[0061] In this embodiment, the elastic element 34 is a spring, which is compressed between the bottom of the first hole 301 and the movable element 31. It is understood that in some other embodiments, the elastic element 34 may also be a spring sheet, and this application does not limit this to that.

[0062] In one embodiment, the self-locking structure 30 further includes a first fixing plate 35 and a first fixing member 36. The first fixing plate 35 covers the opening of the first hole 301 near the first housing 101, and the first fixing member 36 passes through the first fixing plate 35 and is fixedly connected to the second housing 103. The mounting pin 10 passes through the first fixing plate 35 and is inserted into the gap. The first fixing plate 35 is provided to prevent the self-locking structure 30 from falling out of the first hole 301, which helps to improve the stability of the self-locking structure 30 when installed on the second housing 103. The first fixing plate 35 has a mounting hole 351 and a through hole 352. The first fixing member 36 passes through the mounting hole 351 and is fixedly connected to the second housing 103, and the mounting pin 10 passes through the through hole 352 and is inserted into the gap.

[0063] Specifically, the self-locking structure 30 also has a second hole 302, which is a blind hole. The second hole 302 is spaced apart from the first hole 301. Both the second hole 302 and the first hole 301 are located at the end of the second housing 1031 facing the first box 101. The opening of the second hole 302 faces the first box 101. The second hole 302 is used for the first fixing member 36 to pass through and be fixedly connected to the first fixing member 36. By setting the second hole 302, the second hole 302 will not penetrate the second housing 1031, which can avoid gaps at the connection between the first fixing member 36 and the second box 103, thus affecting the sealing performance of the second box 103. This allows the second box 103 to have a waterproof function when stacked with the first box 101.

[0064] In this embodiment, there is one first fixing plate 35, two first fixing members 36, and two second holes 302. After the two first fixing members 36 pass through the first fixing plate 35, they are fixedly connected to the two second holes 302 respectively. The arrangement of the two first fixing members 36 and the two second holes 302 makes it more secure for the first fixing members 36 to fix the first fixing plate 35 to the second housing 1031 of the second box 103.

[0065] It is understood that in some other embodiments, the number of first fasteners 36 can be one, three, etc., and the number of corresponding second holes 302 can be one, three, etc. It is only necessary to ensure that one first fastener 36 passes through the first fastening plate 35 and is fixedly connected to one second hole 302. This application does not limit this.

[0066] In one embodiment, the driving element 32 is an electromagnet, and the movable element 31 is a magnetic element. The driving element 32 generates a magnetic field after being energized and drives the movable element 31 to move away from the first housing 101 within the first hole 301. By setting the driving element 32 as an electromagnet and the movable element 31 as a magnetic element, when it is necessary to remove the second housing 103 from the first housing 101, it is only necessary to energize the driving element 32 to form a magnetic field. Under the action of the magnetic field formed by the energized driving element 32, the movable element 31 moves away from the first housing 101 within the first hole 301. Since the radial dimension of the end of the first hole 301 near the first housing 101 is small, during the process of the movable element 31 moving away from the first housing 101 within the first hole 301, the movable element 31 will gradually come into contact with the mounting pin 10, thereby facilitating the removal of the mounting pin 10 from the self-locking structure 30. This improves the convenience and efficiency of removing the second housing 103 from the first housing 101.

[0067] It should be understood that the force exerted by the magnetic field generated by the energized drive member 32 on the movable member 31 must be greater than the weight of the movable member 31, so that the drive member 32 can drive the movable member 31 to move within the first hole 301. When the aforementioned sleeve 33 is also provided within the first hole 301, the force exerted by the magnetic field generated by the energized drive member 32 on the movable member 31 must be greater than the sum of the weight of the movable member 31, the elastic force exerted on the movable member 31 by the elastic member 34, and the weight of the sleeve 33, so that the drive member 32 can drive both the movable member 31 and the sleeve 33 to move simultaneously within the first hole 301. When the aforementioned elastic member 34 is also provided within the first hole 301, the force exerted by the magnetic field generated by the energized drive member 32 on the movable member 31 must be greater than the sum of the weight of the movable member 31, the elastic force exerted on the movable member 31 by the elastic member 34, and the weight of the sleeve 33, so that the drive member 32 can drive both the movable member 31 and the sleeve 33 to move simultaneously within the first hole 301.

[0068] It is understood that in some other embodiments, the driving member 32 can be a mechanical transmission drive, and the driving member 32 is connected to the movable member 31 through transmission. The movable member 31 can be driven by the driving member 32 to reciprocate along the axial direction of the first hole 301 within the first hole 301. This application does not limit this.

[0069] It is understood that in some other embodiments, when the sleeve 33 is provided in the first hole 301, either the sleeve 33 or the movable member 31 can be a magnetic element. The driving member 32 can move the sleeve 33 or the magnetic element in the first hole 301 away from the first housing 101. The movable member 31 will gradually come into contact with the mounting pin 10, so that the second housing 103 can be detached from the first housing 101. Of course, both the sleeve 33 and the movable member 31 can be magnetic elements to achieve the above effect, and this application does not limit this.

[0070] In one embodiment, the self-locking structure 30 further includes a third hole 303, which is a blind hole. The third hole 303 and the first hole 301 are arranged opposite to each other along the stacking direction of the second housing 103 and the first housing 101. The third hole 303 is located on the inner wall of the second housing 1031, and the opening of the third hole 303 faces away from the first housing 101. The driving member 32 is fixed inside the third hole 303. With the third hole 303 and the first hole 301 arranged opposite to each other along the stacking direction of the second housing 103 and the first housing 101, when the driving member 32 is fixed inside the third hole 303, the driving member 32 and the movable member 31 are arranged opposite to each other along the stacking direction of the second housing 103 and the first housing 101. After being energized, the driving member 32 generates a magnetic field that acts on the movable member 31, so that the movable member 31 can move relative to the driving member 32 within the first hole 301, thereby realizing the locking or unlocking of the mounting pin 10 by the movable member 31.

[0071] In one embodiment, the self-locking structure 30 further includes a second fixing plate 37 and a second fixing member 38. The second fixing plate 37 covers the opening of the third hole 303, and the second fixing member 38 passes through the second fixing plate 37 and is fixedly connected to the second housing 103. The driving member 32 is received and fixed within the space formed by the third hole 303 and the second fixing plate 37. The second fixing plate 37 prevents the driving member 32 from falling out of the third hole 303, thereby improving the stability of the driving member 32 and the self-locking structure 30 when installed on the second housing 103.

[0072] Specifically, the self-locking structure 30 also has a fourth hole 304, which is a blind hole. The fourth hole 304 is spaced apart from the third hole 303. The openings of both the fourth hole 304 and the third hole 303 are located inside the second housing 1031, and the opening of the fourth hole 304 faces away from the first housing 101. The fourth hole 304 is used for the second fixing member 38 to pass through and be fixedly connected to the second fixing member 38. By setting the fourth hole 304, the fourth hole 304 will not penetrate the second housing 1031, which can avoid gaps at the connection between the second fixing member 38 and the second housing 103, thus preventing the sealing performance of the second housing 103 from being affected. This allows the second housing 103 to have a waterproof function when stacked with the first housing 101.

[0073] In this embodiment, there is one second fixing plate 37, two second fixing members 38, and two fourth holes 304. After the two second fixing members 38 pass through the second fixing plate 37, they are fixedly connected to the two fourth holes 304 respectively. The arrangement of the two second fixing members 38 and the two fourth holes 304 makes it more secure for the second fixing members 38 to fix the second fixing plate 37 to the second housing 1031 of the second box 103.

[0074] It is understood that in some other embodiments, the number of second fasteners 38 can be one, three, etc., and the number of corresponding fourth holes 304 can be one, three, etc. It is only necessary to ensure that one second fastener 38 passes through the second fastening plate 37 and is fixedly connected to one fourth hole 304. This application does not limit this.

[0075] In this embodiment, the second housing 1031 is provided with a first boss 1034 and a second boss 1035 integrally formed with the second housing 1031. A first hole 301 and a third hole 303 are provided on opposite ends of the first boss 1034, and a second hole 302 and a fourth hole 304 are provided on opposite ends of the second boss 1035. The first boss 1034 is frustum-shaped to facilitate the demolding process of the first boss 1034.

[0076] Please see Figures 1 to 10 , Figure 10 This is a structural diagram of an energy storage system provided in one embodiment of this application.

[0077] The first embodiment of this application provides an energy storage system 1000, which includes an energy storage device 100, a power module 300, and a control module 500. The energy storage device 100, power module 300, and control module 500 are electrically connected in sequence to form a series circuit. The power module 300 supplies power to the energy storage device 100, enabling the unlocking function of the first housing 101 and the second housing 103 of the energy storage device 100. It is understood that the power module 300 and control module 500 can be replaced by a battery management system (BMS), which controls the power supply to and from the connected power source of the energy storage device 100.

[0078] The energy storage system will now be described in detail using energy storage device 100 as the electromagnetic drive.

[0079] In the energy storage system provided in this embodiment, the drive unit 32, power module 300 and control module 500 of the energy storage device 100 are electrically connected.

[0080] The power module 300 supplies power to the drive component 32 of the energy storage device 100, so that the drive component 32 generates a magnetic field after being energized. The movable component 31 can move from one end of the first hole 301 near the first housing 101 to the other end of the first hole 301 away from the first housing 101 within the magnetic field generated by the drive component 32 of the energy storage device 100, thereby separating the movable component 31 from the mounting pin 10. This allows the mounting pin 10 to be pulled out of the self-locking structure 30 of the energy storage device 100, facilitating the removal of the second housing 103 from the first housing 101. The control module 500 controls the energization and de-energization between the power module 300 and the drive component 32, thereby controlling the position of the movable component 31 within the first hole 301. In other words, the control module 500 controls the engagement or disengagement between the movable component 31 and the mounting pin 10, thereby controlling the locking or unlocking of the mounting pin 10 and the self-locking structure 30. It is important to understand that when the power supply between the drive unit 32 and the power module 300 is cut off, the mounting pin 10 and the self-locking structure 30 are locked, and the second housing 103 cannot be removed from the first housing 101. When the power supply between the drive unit 32 and the power module 300 is connected, the mounting pin 10 and the self-locking structure 30 are unlocked, and the second housing 103 can be directly removed from the first housing 101.

[0081] The energy storage system 1000 provided in this embodiment locks the first housing 101 and the second housing 103 when the power module 300 and the drive unit 32 of the energy storage device 100 are disconnected from each other, and unlocks the first housing 101 and the second housing 103 when the power module 300 and the drive unit 32 of the energy storage device 100 are powered on. When the first housing 101 and the second housing 103 are locked, no power is consumed by the power module 300, which can reduce the power consumption of the energy storage system 1000 on the power module 300 and improve energy utilization.

[0082] In one specific embodiment, the control module 500 includes a mechanical switch 510. The drive unit 32 of the energy storage device 100 and the power module 300 are electrically connected to the mechanical switch 510. The mechanical switch 510 is used to control the power supply and de-energization between the power module 300 and the drive unit 32 of the energy storage device 100. By placing the mechanical switch 510 between the power module 300 and the drive unit 32, operating the mechanical switch 510 can control the power supply and de-energization between the power module 300 and the drive unit 32.

[0083] In one specific embodiment, the control module 500 includes a communication module 520 and a remote control module 530. The drive unit 32 of the energy storage device 100, the power module 300, and the communication module 520 are electrically connected. The remote control module 530 and the communication module 520 are communicatively connected. The remote control module 530 is used to send control messages to the communication module 520, and the communication module 520 is used to control the power supply and power disconnection between the power module 300 and the drive unit 32. Because the communication module 520 is located between the power module 300 and the drive unit 32 of the energy storage device 100, and the remote control module 530 and the communication module 520 are communicatively connected, remote operation of the remote control module 530 can control the power supply and power disconnection between the power module 300 and the drive unit 32.

[0084] In this embodiment, the control module 500 includes a mechanical switch 510, a communication module 520, and a remote control module 530. The drive unit 32, power module 300, communication module 520, and mechanical switch 510 of the energy storage device 100 are electrically connected. The remote control module 530 and communication module 520 are communicatively connected. The remote control module 530 is used to send control messages to the communication module 520. The communication module 520 is used to control the power supply and de-energization between the power module 300 and the drive unit 32. The mechanical switch 510 is used to control the power supply and de-energization between the power module 300 and the drive unit 32 of the energy storage device 100. In other words, the mechanical switch 510 and the communication module 520 jointly control the power supply and de-energization between the power module 300 and the drive unit 32 of the energy storage device 100.

[0085] Understandably, in some other embodiments, the energy storage system 1000 also includes a display module, which is used to display the locking or unlocking state between the first housing 101 and the second housing 103 in the energy storage device 100. This application does not limit this.

[0086] The above are some embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

Claims

1. An energy storage device (100) characterized by, The energy storage device (100) comprises a first box (101) and a second box (103) arranged in a stacked manner, the first box (101) is provided with a mounting pin (10), and the second box (103) is provided with a self-locking structure (30); the self-locking structure (30) comprises a first hole (301), a movable piece (31) arranged in the first hole (301), and a driving piece (32); the inner diameter of the first hole (301) gradually decreases from an end away from the first box (101) to an end close to the first box (101); the movable piece (31) and the inner wall of the first hole (301) or the movable piece (31) itself form a gap for the mounting pin (10) to extend into; the mounting pin (10) is arranged in the gap in the first hole (301); under the action of gravity, the movable piece (31) falls into the end of the first hole (301) close to the first box (101); under the abutting action of the inner wall of the first hole (301), the movable piece (31) abuts against the mounting pin (10) to lock the mounting pin (10); and the driving piece (32) is used for driving the movable piece (31) to separate from the mounting pin (10) to unlock the mounting pin (10).

2. The energy storage device (100) according to claim 1, wherein the self-locking structure (30) further comprises a sleeve (33) movably arranged in the first hole (301) along the axial direction of the first hole (301); the sleeve (33) has a through hole (331) arranged through the sleeve (33) along the radial direction of the sleeve (33); the movable piece (31) is movably arranged in the through hole (331) along the radial direction of the sleeve (33); and the movable piece (31) protrudes from the inner wall and the outer wall of the sleeve (33).

3. The energy storage device (100) according to claim 2, wherein the number of the movable pieces (31) is plural, the number of the through holes (331) is plural, and the number of the through holes (331) is equal to the number of the movable pieces (31); each movable piece (31) is movably arranged in a through hole (331) along the radial direction of the sleeve (33), and the plural movable pieces (31) surround the gap.

4. The energy storage device (100) according to claim 3, wherein the sleeve (33) is in the shape of a flared pipe, and the outer diameter of the end of the sleeve (33) close to the first box (101) is smaller than the outer diameter of the end of the sleeve (33) away from the first box (101).

5. The energy storage device (100) according to claim 3, wherein the center lines of the plural through holes (331) are located on the same plane, and the distance between any two adjacent through holes (331) is equal; and the centers of the plural movable pieces (31) are located on the same plane, and the distance between any two adjacent movable pieces is equal.

6. The energy storage device (100) according to claim 2, wherein The self-locking structure (30) further comprises an elastic member (34), the first hole (301) is a blind hole, one end of the elastic member (34) abuts against the bottom of the first hole (301), and the other end of the elastic member (34) extends into the sleeve (33) and abuts against the movable member (31).

7. The energy storage device (100) of claim 1, wherein, The self-locking structure (30) further comprises a first fixing plate (35) and a first fixing member (36), the first fixing plate (35) is arranged on the opening of the first hole (301) close to the first box (101), the first fixing plate (35) has a mounting hole (351) and a through hole (352), the first fixing member (36) passes through the mounting hole (351) and is fixedly connected with the second box (103), and the mounting pin (10) passes through the through hole (352) and is arranged in the gap.

8. The energy storage device (100) of claim 2, wherein, The driving member (32) is an electromagnet, the sleeve (33) is a magnetic member, the driving member (32) is used for generating a magnetic field after being electrified and driving the sleeve (33) to move in the first hole (301) in a direction away from the first box (101), thereby driving the movable member (31) to move in the first hole (301) in a direction away from the first box (101).

9. The energy storage device (100) of claim 8, wherein, The self-locking structure (30) further has a third hole (303), the first hole (301) and the third hole (303) are both blind holes, the third hole (303) and the first hole (301) are oppositely arranged along the stacking direction of the second box (103) and the first box (101), the opening of the third hole (303) faces away from the first box (101), and the driving member (32) is fixed in the third hole (303).

10. The energy storage device (100) of claim 9, wherein, The self-locking structure (30) further comprises a second fixing plate (37) and a second fixing member (38), the second fixing plate (37) is arranged on the opening of the third hole (303), the second fixing member (38) passes through the second fixing plate (37) and is fixedly connected with the second box (103), and the driving member (32) is accommodated and fixed in the space formed by the third hole (303) and the second fixing plate (37).

11. An energy storage system (1000) characterized by, including: The energy storage device (100) according to any one of claims 1 to 10; a power supply module (300), and A control module (500), the driving member (32), the power module (300) and the control module (500) of the energy storage device (100) are electrically connected; the power module (300) is used for powering the driving member (32), and the control module (500) is used for controlling the power-on and power-off between the power module (300) and the driving member (32).

12. The energy storage system (1000) according to claim 11, characterized in that, The control module (500) comprises a mechanical switch (510), and the mechanical switch (510) is used for controlling the power-on and power-off between the power module (300) and the driving member (32).

13. The energy storage system (1000) according to claim 11, characterized in that, The control module (500) comprises a communication module (520) and a remote control module (530), the remote control module (530) and the communication module (520) are in communication connection, and the remote control module (530) is used for sending a control message to the communication module (520) to control the power-on and power-off between the power module (300) and the driving member (32).

Images