Energy storage cabinet and battery pack

Abstract

The utility model discloses an energy storage cabinet and a battery pack. The energy storage cabinet comprises a cabinet body, a supporting plate and a limiting assembly, a containing space is formed in the cabinet body, and the supporting plate is fixedly connected to the side wall of the cabinet body. The supporting plate extends in the first direction and is provided with a first end and a second end in the first direction. The limiting assembly can comprise a first limiting plate and a positioning pin, the first limiting plate is fixedly connected to the first end of the supporting plate, the first limiting plate can be perpendicular to the supporting plate, the positioning pin is fixedly connected to the face, facing the second end of the supporting plate, of the first limiting plate, and the positioning pin extends towards the second end of the supporting plate. By the adoption of the scheme, the supporting plate supports the battery pack, the first limiting plate can limit the freedom degree of the battery pack in the first direction, the positioning pin can limit the freedom degree of the battery pack in the second direction and the third direction, the battery pack is fixed in the cabinet, and the fixing reliability of the battery pack in the cabinet is improved.

Description

Technical Field

[0001] The present application relates to the field of energy, and in particular to an energy storage cabinet and a battery pack. Background Art

[0002] Under the dual influence of the global dual-carbon policy and the high price of fossil energy, the photovoltaic and energy storage industries have developed rapidly. The energy density of battery packs is getting higher and higher, making the whole system heavier and heavier, and the system's requirements for energy storage safety are getting higher and higher. For battery packs that can be as small as a few hundred kilograms or as heavy as tons, the safety issue in the transportation link is particularly important. In this regard, the reliability of the battery pack fixed in the cabinet needs to be improved. Utility Model Content

[0003] The present application provides an energy storage cabinet and a battery pack to improve the reliability of fixing the battery pack in the cabinet.

[0004] In a first aspect, the present application provides an energy storage cabinet, which may include a cabinet body, a support plate and a limit assembly, wherein the cabinet body has a storage space inside, and the support plate is fixedly connected to the side wall of the cabinet body. The support plate extends along a first direction, and the support plate has a first end and a second end along the first direction. The limit assembly may include a first limit plate and a positioning pin, wherein the first limit plate is fixedly connected to the first end of the support plate, the first limit plate may be perpendicular to the support plate, the positioning pin is fixedly connected to the surface of the first limit plate facing the second end of the support plate, and the positioning pin extends toward the second end of the support plate.

[0005] In the technical solution provided in the present application, when the battery pack is installed into the cabinet, the support plate supports the battery pack. As the battery pack moves, the positioning pin is inserted into the positioning hole at one end of the battery pack. The end of the battery pack provided with the positioning hole abuts against the first limit plate. The first limit plate blocks the battery pack from continuing to move. At this time, the battery pack is installed in place. The first limit plate can limit the freedom of the battery pack in a first direction, and the positioning pin can limit the freedom of the battery pack in two directions perpendicular to the first direction, thereby achieving fixation of the battery pack in the cabinet, improving the reliability of fixation of the battery pack in the cabinet, and ensuring that the battery pack does not loosen during transportation, falling and vibration scenarios.

[0006] In a specific possible implementation, the positioning pin has a first end and a second end along the first direction, the second end of the positioning pin is the end of the positioning pin close to the second end of the support plate, the first end of the positioning pin is the end of the positioning pin close to the first end of the support plate, the second end of the positioning pin can have a tapered structure, and the tapered structure can be coaxially arranged with the positioning pin; the radial dimension of the second end of the positioning pin is smaller than the radial dimension of the first end of the positioning pin. In the process of the battery pack continuing to move after contacting the positioning pin, as the positioning pin is plugged into the positioning hole of the battery pack, the positioning pin can fine-tune the position of the battery pack to achieve precise positioning of the battery pack.

[0007] In a specific embodiment, the radial dimension of the tapered structure increases gradually from the second end of the positioning pin to the first end of the positioning pin. The tapered structure can make a preliminary adjustment to the position of the battery pack so that the positioning hole of the battery pack is initially aligned with the positioning pin, so that the positioning hole of the battery pack is smoothly and accurately plugged with the positioning pin.

[0008] In a specific possible implementation scheme, the limiting assembly may further include a second limiting plate, the second limiting plate having a first end and a second end along the first direction, the first end of the second limiting plate may be fixed to an end of the first limiting plate away from the support plate, and the second limiting plate extends toward the second end of the support plate. The cross-sectional shape of the limiting assembly along the first direction is L-shaped, and the limiting assembly is convenient for cooperating with a protrusion at one end of the battery pack, so that the battery pack can be limited more reliably.

[0009] In a specific possible implementation, the limit assembly may further include a third limit plate, the second end of the second limit plate is fixedly connected to the third limit plate, the second limit plate and the first limit plate may be vertically arranged, and the third limit plate may be bent relative to the second limit plate in a direction away from the support plate. The arrangement of the third limit plate enables the limit assembly to have a certain impact resistance, and the contact between the limit assembly and the battery pack is relatively gentle, which can avoid damaging the battery pack.

[0010] In a specific possible implementation scheme, the positioning pin is located between the second limiting plate and the support plate in the second direction, and the second direction is perpendicular to the first direction. When the battery pack is installed into the cabinet, as the battery pack moves, the protrusion of the battery pack enters the accommodation space formed by the limiting assembly and the support plate, and the positioning pin is inserted into the positioning hole on the battery pack. When the first limiting plate abuts against the battery pack, the positioning pin can be inserted into place, and the protrusion of the battery pack can also be inserted into place, which facilitates the positioning of the battery pack in the cabinet.

[0011] In a specific possible implementation scheme, the limit assembly may further include a reinforcing plate, the reinforcing plate having a first connecting surface and a second connecting surface connected to each other, the first connecting surface and the second connecting surface being perpendicular, the first connecting surface being fixedly connected to the surface of the first limit plate facing the second end of the support plate, and the second connecting surface being fixedly connected to the surface of the second limit plate facing the support plate. The reinforcing plate is respectively connected to the first limit plate and the second limit plate, so that the relative position of the first limit plate and the second limit plate is relatively stable, and the structural stability of the limit assembly can be improved.

[0012] In a specific possible implementation, a limiting hole can be provided at the second end of the support plate, and the limiting hole is used to install a limiting member, the limiting member protrudes from the support plate in the second direction, the distance between the limiting hole and the first limiting plate is greater than the length of the battery pack, and the difference between the distance between the limiting hole and the first limiting plate and the length of the battery pack is less than the length of the positioning pin along the first direction. After the battery pack is installed, a bolt or other structural member can be inserted into the limiting hole to abut against the first end of the battery pack to limit the battery pack from sliding out of the cabinet, thereby locking the battery pack, and ensuring that the positioning pin is at least partially inserted into the battery pack.

[0013] In a specific possible implementation, the energy storage cabinet may further include a guide plate, the guide plate extends along the first direction, the guide plate is fixedly connected to the support plate, and the guide plate and the support plate are arranged perpendicularly; the guide plate is located on one side of the positioning pin in the third direction, and the third direction is perpendicular to the first direction. When the battery pack is installed into the cabinet, the guide plate can guide the battery pack to move along the first direction, and the battery pack can be initially positioned so that the positioning pin can be inserted into the positioning hole on the battery pack relatively smoothly.

[0014] In a specific feasible implementation scheme, the guide plate is rotatably provided with a roller, and the rotation axis of the roller is arranged along the second direction; the radius of the roller is r, and the distance between the rotation axis of the roller and the side of the guide plate facing the positioning pin is L, wherein r>L, ensuring that the roller can be exposed from the guide plate. When the battery pack is installed into the interior of the cabinet, the roller has a guiding function, which can guide the movement of the battery pack, making the movement of the battery pack more convenient and facilitating the installation of the battery pack into the cabinet, and the rolling friction between the roller and the side of the battery pack can avoid the collision between the battery pack and the guide plate, and can make the battery pack be pushed to the first end of the support plate more smoothly, reducing the possibility of damage to the battery pack when it is installed into the cabinet.

[0015] In a specific possible implementation scheme, the guide plate and the support plate can be arranged vertically; a connecting frame can be fixedly connected to the side of the guide plate away from the positioning pin in the third direction, and the connecting frame can include a first connecting plate and a second connecting plate connected to each other, and the first connecting plate and the second connecting plate are arranged at an angle; the second connecting plate is fixedly connected to the guide plate through the first connecting plate, the second connecting plate and the support plate can be arranged vertically, and the second connecting plate is fixedly connected to the cabinet. The arrangement of the connecting frame facilitates the connection between the guide plate and the cabinet.

[0016] In a specific feasible implementation scheme, the connecting frame may further include a third connecting plate, which is fixedly connected to the second connecting plate, and the second connecting plate is fixedly connected to the guide plate via the first connecting plate and the third connecting plate; the third connecting plate may be arranged parallel to the first connecting plate.

[0017] The provision of the third connecting plate can improve the overall structural stability of the connecting frame.

[0018] In a specific possible implementation scheme, the second connecting plate may be provided with a connecting hole, and the second connecting plate is fixedly connected to the cabinet through a connecting piece provided in the connecting hole, so as to facilitate the connection between the second connecting plate and the cabinet, thereby facilitating the connection between the connecting frame and the cabinet.

[0019] In a specific embodiment, the guide plate may have a notch on one side facing the positioning pin, and the projection of the notch along the third direction covers the connection hole. When the connecting frame is connected to the cabinet, there is a large operating space, which facilitates the connection operation of the connecting frame and makes the connection between the connecting frame and the cabinet more convenient.

[0020] In a specific possible implementation, a fixing plate can be fixedly connected to the side of the guide plate facing away from the positioning pin in the third direction, and the fixing plate can be fixedly connected to the guide plate and the cabinet, and the fixing plate and the guide plate are arranged vertically. On the basis that the guide plate is fixedly connected to the cabinet through the connecting frame and the connecting piece, the setting of the fixing plate can further improve the stability of the connection between the guide plate and the cabinet.

[0021] In a specific feasible implementation scheme, the energy storage cabinet also includes a battery pack, which is located in the accommodating space of the cabinet, and two support plates are arranged on two opposite side walls of the cabinet, and the two support plates are arranged opposite to each other in a third direction and jointly support the battery pack; the battery pack has a first surface and a second surface in a first direction, and the first surface is used to abut against the first limit plate, and the first surface has a first end and a second end in the third direction, and the first end and the second end are provided with positioning holes, which extend toward the second surface, and the positioning holes are used to be plugged with the positioning pins.

[0022] In the second aspect, the present application also provides a battery pack, which may include a shell and a plurality of battery cells, wherein the plurality of battery cells are arrayed inside the shell, and the plurality of battery cells may be connected in parallel or in series. The shell has a first side and a second side in the height direction of the battery pack, and the first side of the shell is used to abut against the support plate of the energy storage cabinet. The shell has a first surface and a second surface in the length direction of the battery pack, and the first surface of the shell is used to abut against the first limit plate of the energy storage cabinet. The first surface of the shell has a first end and a second end in the width direction of the battery pack, and the first end and the second end are provided with positioning holes, and the positioning holes extend toward the second surface of the shell, and the positioning holes are used to be plugged with the positioning pins of the energy storage cabinet.

[0023] In a specific possible implementation scheme, two protrusions may be provided at the first end and the second end of the first surface of the shell, each protrusion having a first surface and a second surface along the length direction of the battery pack, the second surface of the protrusion being fixedly connected to the shell, the first surface of the protrusion being used to abut against the first limit plate of the energy storage cabinet, and a positioning hole being provided on the first surface of each protrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1A possible structural diagram of the energy storage cabinet provided for this application;

[0025] Figure 2 The front view of the energy storage cabinet provided for this application;

[0026] Figure 3 A schematic diagram of the structure of the limit assembly of the energy storage cabinet provided in this application;

[0027] Figure 4 A partial structural diagram of the limiting assembly of the energy storage cabinet provided in this application;

[0028] Figure 5 A rear view of a battery pack that matches the energy storage cabinet provided in this application;

[0029] Figure 6 A side view of a battery pack that matches the energy storage cabinet provided in this application;

[0030] Figure 7 A partial structural diagram of the limiting assembly of the energy storage cabinet provided in this application;

[0031] Figure 8 A schematic cross-sectional view of the energy storage cabinet provided in this application;

[0032] Fig. 9 A partial structural diagram of the energy storage cabinet provided for this application;

[0033] Fig.10 A partial structural diagram of the energy storage cabinet provided for this application;

[0034] Fig.11 A schematic diagram of the structure of the energy storage cabinet provided for this application.

[0035] Reference numerals:

[0036] 100-column; 200-cabinet; 300-battery pack; 110-support plate;

[0037] 120-limiting assembly; 130-guide plate; 140-roller; 150-connecting frame;

[0038] 160-fixing plate; 111-limiting hole; 122-locating pin; 123-locating nut;

[0039] 124-reinforcement plate; 131-second notch; 151-first connecting plate; 152-second connecting plate;

[0040] 1211-first limiting plate; 1212-second limiting plate; 1213-third limiting plate; 1221-conical structure;

[0041] 1521-connecting piece; 310-protrusion; 320-positioning hole. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the present application clearer, the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings. However, the example implementation can be implemented in various forms and should not be construed as being limited to the implementations set forth herein. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted. The words expressing position and direction described in the embodiments of the present application are all described with reference to the accompanying drawings as examples, but changes may be made as needed, and the changes made are all included in the scope of protection of the present application. The drawings of the embodiments of the present application are only used to illustrate the relative position relationship and do not represent the true proportion.

[0043] The following description sets forth specific details to facilitate understanding of the present application, but the embodiments of the present application can be implemented in a variety of other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the embodiments of the present application. Therefore, the present application is not limited to the specific implementation methods disclosed below.

[0044] For ease of understanding, the application scenarios of the energy storage cabinet involved in the present application are first explained. The energy storage cabinet provided in the embodiment of the present application can be applied to energy storage scenarios, and the energy storage cabinet can accommodate a battery pack (Pack; or battery module). The battery pack can be jointly supported by support plates arranged on two opposite side walls of the energy storage cabinet. The structural form of the energy storage cabinet is not limited to a cabinet body, but can also be a box body, a bracket structure, etc. The cabinet body of the energy storage cabinet can be a welded one-piece structure or an assembled structure.

[0045] In actual applications, the energy storage cabinet may also include a power converter, which may be arranged inside or outside the energy storage cabinet. The power converter may play a role in AC / DC conversion and power regulation. Specifically, the power converter is electrically connected to the battery pack, and the power converter is used to convert the AC power output by an external AC power source into DC power and output it to the battery pack, and / or the power converter is used to convert the DC power output by the battery pack into AC power and output it to a load or a power grid.

[0046] In the related art, the battery pack is usually fixed in the cabinet only by screws, the reliability of the battery pack fixation is low, and the safety of the battery pack during transportation is not guaranteed. Based on this, the embodiment of the present application provides an energy storage cabinet to improve the reliability of the battery pack fixation in the cabinet.

[0047] First refer to Figure 1 , Figure 1A possible structural schematic diagram of the energy storage cabinet provided by the present application is shown. In the coordinate directions in the following figures, the direction shown on the x-axis represents the first direction, the direction shown on the y-axis represents the second direction, and the direction shown on the z-axis represents the third direction; the second direction can be perpendicular to the first direction, and the third direction can be perpendicular to the first direction and the second direction. Figure 1 As shown, the energy storage cabinet provided in the embodiment of the present application may include a cabinet 200, a support plate 110 and a limit assembly. Specifically, the first direction may be the length direction of the cabinet 200, the second direction may be the height direction of the cabinet 200, and the third direction may be the width direction of the cabinet 200. The cabinet 200 has a accommodating space inside, and the cabinet 200 may include two side walls opposite to each other in the width direction, wherein a support plate 110 is provided on one side of the first side wall facing the second side wall, and a support plate 110 is also provided on one side of the second side wall facing the first side wall, and the number of support plates 110 provided on the two side walls is the same and corresponds one to one in the width direction of the cabinet 200, that is, the support plates 110 provided on the two side walls are mirror-set to form multiple pairs of support plates 110 provided in a mirror-set manner. The support plate 110 may extend along the first direction, and the support plate 110 has a first end and a second end along the first direction. In actual applications, when the battery pack is installed into the cabinet 200, a pair of mirror-image support plates 110 can jointly support a battery pack. Specifically, a pair of mirror-image support plates 110 can be respectively located on both sides of the width direction of the battery pack, and the battery pack is not prone to tilting left or right; multiple pairs of mirror-image support plates 110 can correspondingly support multiple battery packs.

[0048] In a specific implementation, the side wall of the cabinet 200 in the width direction may include a plurality of columns 100 , and the columns 100 may be arranged along the height direction of the cabinet 200 . Figure 1 The example shows that the side wall of the cabinet 200 in the width direction includes three columns 100. The support plate 110 can be fixedly connected to the column 100, and the column 100 can provide support for the support plate 110 perpendicular to the horizontal plane, so that the support plate 110 can support the battery pack on the horizontal plane. Figure 2 The front view of the energy storage cabinet is shown, illustrating that four pairs of mirror-image support plates 110 are arranged inside the cabinet body 200, which can carry four battery packs 300.

[0049] Figure 3 The schematic diagram of the structure of the limit assembly of the energy storage cabinet provided by the present application is shown. Figure 4 The following further shows a partial structural diagram of the limiting assembly of the energy storage cabinet provided by the present application. Figure 3 and Figure 4As shown, the limiting assembly 120 may include a first limiting plate 1211 and a positioning pin 122. The first limiting plate 1211 is fixedly connected to the first end of the support plate 110, and the first limiting plate 1211 may be perpendicular to the support plate 110. The positioning pin 122 is fixedly connected to the surface of the first limiting plate 1211 facing the second end of the support plate 110, and the positioning pin 122 extends toward the second end of the support plate 110. Specifically, the positioning pin 122 may be arranged parallel to the support plate 110, that is, the axial direction of the positioning pin 122 may be parallel to the first direction.

[0050] As a possible implementation, a battery pack that matches an energy storage cabinet may include a shell and a plurality of battery cells, wherein the plurality of battery cells are arrayed inside the shell, and the plurality of battery cells may be connected in parallel or in series. The shell has a first side and a second side in the height direction of the battery pack, the shell has a first surface and a second surface in the length direction of the battery pack, and the first surface of the shell has a first end and a second end in the width direction of the battery pack, and the first end and the second end are provided with positioning holes. Specifically, the first side of the shell may be the bottom side of the shell, and the first surface of the shell may correspond to the tail end of the shell. When the battery pack is installed into the cabinet of the energy storage cabinet, the first side of the shell abuts against the support plate of the energy storage cabinet, the first surface of the shell abuts against the first limit plate of the energy storage cabinet, and the positioning hole is plugged into the positioning pin of the energy storage cabinet.

[0051] Combination Figure 5 and Figure 6 As shown, the positioning hole 320 may extend toward the second surface of the shell, that is, the positioning hole 320 may extend along the length direction of the battery pack 300 . When the battery pack 300 is installed into the cabinet 200, one end of the battery pack 300 provided with the positioning hole 320 faces the inside of the cabinet 200, and the battery pack 300 moves along the first direction on the support plate 110, and the support plate 110 supports the battery pack 300. As the battery pack 300 moves, the positioning pin 122 is inserted into the positioning hole 320 on the battery pack 300, and one end of the battery pack 300 provided with the positioning hole 320 abuts against the first limiting plate 1211, and the first limiting plate 1211 blocks the battery pack 300 from continuing to move. At this time, the battery pack 300 is installed in place, and the first limiting plate 1211 can limit the freedom of the battery pack 300 in the first direction, and the positioning pin 122 can limit the freedom of the battery pack 300 in the second and third directions, thereby fixing the battery pack 300 in the cabinet, improving the reliability of the battery pack 300 in the cabinet, and ensuring that the battery pack 300 does not loosen during transportation, falling and vibration scenarios.

[0052] When the battery pack 300 is installed and pushed into the cabinet 200, when one end of the battery pack 300 provided with the positioning hole 320 approaches the first end of the support plate 110, the positioning pin 122 is plugged into the positioning hole 320 of the battery pack 300. The positioning pin 122 can play a guiding role, accurately positioning the battery pack 300, and ensuring the precise installation of the battery pack 300. Figure 4 As shown, the positioning pin 122 has a first end and a second end along the first direction, the second end of the positioning pin 122 is the end of the positioning pin 122 close to the second end of the support plate 110, the first end of the positioning pin 122 is the end of the positioning pin 122 close to the first end of the support plate 110, the second end of the positioning pin may have a tapered structure 1221, that is, the end of the positioning pin 122 plugged into the positioning hole 320 of the battery pack 300 may have a tapered structure 1221, and the radial dimension of the second end of the positioning pin 122 is smaller than the radial dimension of the first end of the positioning pin 122. In the process of the battery pack 300 continuing to move after contacting the positioning pin 122, as the positioning pin 122 is plugged into the positioning hole 320 of the battery pack 300, the positioning pin 122 with a gradually increasing radial dimension can fine-tune the position of the battery pack 300, thereby achieving accurate positioning of the battery pack 300.

[0053] In a specific implementation, the radial dimension of the tapered structure 1221 gradually increases along the direction from the second end of the positioning pin 122 to the first end of the positioning pin 122. The provision of the tapered structure 1221 can play a role in correcting deviation, facilitating the insertion of the positioning pin 122 with the positioning hole 320 of the battery pack 300. Specifically, the tapered structure 1221 with gradually increasing radial dimensions can preliminarily adjust the position of the battery pack 300, so that the positioning hole 320 of the battery pack 300 is preliminarily aligned with the positioning pin 122, so that the positioning hole 320 of the battery pack 300 can be smoothly and accurately inserted with the positioning pin 122. Specifically, along the direction from the second end of the positioning pin 122 to the first end of the positioning pin 122, the conical structure 1221 can be a one-stage structure, and the radial dimension of the conical structure 1221 changes continuously; or the conical structure 1221 can be a multi-stage structure, for example, the conical structure 1221 includes two connected sections, namely the front half and the rear half, wherein the radial dimension of the front half gradually increases, and the radial dimension of the rear half also gradually increases, but the slopes of the front half and the rear half are different. The conical structure 1221 and the positioning pin 122 can be coaxially arranged, the conical structure 1221 and the positioning pin 122 can be integrally formed, or the conical structure 1221 can be formed separately and fixedly connected to the positioning pin 122 by welding or other connection methods.

[0054] As a possible implementation, Figure 4As shown, the limiting assembly may further include a second limiting plate 1212, the second limiting plate 1212 having a first end and a second end along the first direction, and the first end of the second limiting plate 1212 may be fixed to an end of the first limiting plate 1211 away from the support plate 110. The positioning pin 122 is located between the second limiting plate 1212 and the support plate 110 in the second direction, and similar to the positioning pin 122, the second limiting plate 1212 extends toward the second end of the support plate 110. Specifically, the second limiting plate 1212 may be arranged perpendicularly to the first limiting plate 1211, and in this case, the second limiting plate 1212 is arranged parallel to the support plate 110, and the cross-sectional shape of the second limiting plate 1212 and the first limiting plate 1211 as a whole along the first direction is L-shaped, and the first limiting plate 1211, the second limiting plate 1212 and the support plate 110 together form a receiving space, and the cross-sectional shape of the receiving space along the third direction is similar to a U-shape.

[0055] Figure 7 A partial structural schematic diagram of the limit assembly of the energy storage cabinet provided in the present application is shown. Figure 7 and Figure 4 A partial structural schematic diagram of the limit assembly is shown from two directions. Figure 4 and Figure 7 As shown, in a specific implementation, the first limit plate 1211 and the support plate 110 can be fixedly connected by screw connection, or the first limit plate 1211 and the support plate 110 can be fixedly connected by welding, or the first limit plate 1211 and the support plate 110 can be fixedly connected by screws and reinforced by welding. The second limit plate 1212 and the first limit plate 1211 can be welded or integrally formed. The positioning pin 122 is fixedly connected to the first limit plate 1211, and the positioning pin 122 is located between the second limit plate 1212 and the support plate 110 in the second direction. The locating pin 122 can be directly welded on the first limiting plate 1211 to realize the fixed connection between the locating pin 122 and the first limiting plate 1211, or, a locating nut 123 can be welded to one side of the second end of the first limiting plate 1211 away from the support plate 110, that is, the locating nut 123 and the locating pin 122 are respectively located on both sides of the first limiting plate 1211 in the first direction, and the locating pin 122 can pass through the first limiting plate 1211 and be threadedly connected to the locating nut 123, so that the fixed connection between the locating pin 122 and the first limiting plate 1211 can be realized.

[0056] Matching the energy storage cabinet 100, two protrusions 310 may be provided at the first end and the second end of the first surface of the shell of the battery pack 300, or in other words, two protrusions 310 are provided at the tail end of the battery pack 300, and the two protrusions 310 are respectively provided close to the shell on both sides in the width direction of the battery pack 300. Each protrusion 310 has a first surface and a second surface along the length direction of the battery pack 300, the second surface of the protrusion 310 is fixedly connected to the shell, and a positioning hole 320 is provided on the first surface of each protrusion 310. The shape of the protrusion 310 of the battery pack 300 matches the shape of the accommodation space formed by the first limiting plate 1211, the second limiting plate 1212 and the support plate 110. For example, when the cross-sectional shape of the accommodation space formed by the first limiting plate 1211, the second limiting plate 1212 and the support plate 110 along the third direction is U-shaped, the cross-sectional shape of the protrusion 310 of the battery pack 300 along the third direction is rectangular or square. In this way, when the battery pack 300 is installed into the cabinet 200, as the battery pack 300 moves, the protrusion 310 of the battery pack 300 enters the accommodation space formed by the first limiting plate 1211, the second limiting plate 1212 and the support plate 110, and the positioning pin 122 is inserted into the positioning hole 320 on the battery pack 300. When the first surface of the protrusion 310 abuts against the first limiting plate 1211, the positioning pin 122 can be inserted into place. There may be a distance between the protrusion 310 and the edge of the first surface of the shell, so as to ensure that the protrusion 310 can reliably enter the accommodating space formed by the first limiting plate 1211 , the second limiting plate 1212 and the supporting plate 110 .

[0057] When implementing it, Figure 4 As shown, the limiting assembly may further include a third limiting plate 1213, the second end of the second limiting plate 1212 is fixedly connected to the third limiting plate 1213, and the third limiting plate 1213 is bent relative to the second limiting plate 1212 in a direction away from the support plate 110, which can be understood as the third limiting plate 1213 being bent upward relative to the second limiting plate 1212. The provision of the third limiting plate 1213 enables the limiting assembly to have a certain impact resistance, and the abutment between the second limiting plate 1212 and the battery pack 300 is relatively gentle, which can avoid damaging the battery pack 300. The third limiting plate 1213 can be integrally formed with the second limiting plate 1212, and the material can be steel.

[0058] In a specific implementation, the position limiting assembly 120 may further include a reinforcing plate 124, which may be fixedly connected to the first position limiting plate 1211 and the second position limiting plate 1212 of the first position limiting plate 1211, respectively, to improve the structural stability of the position limiting assembly. Specifically, the reinforcing plate 124 has a first connecting surface and a second connecting surface connected to each other, the first connecting surface and the second connecting surface are perpendicular, the first connecting surface is fixedly connected to the surface of the first position limiting plate 1211 facing the second end of the support plate 110, and the second connecting surface is fixedly connected to the surface of the second position limiting plate 1212 facing the support plate 110. The reinforcing plate 124 may also be fixedly connected to the support plate 110 to improve the relative position stability between the position limiting assembly and the support plate 110.

[0059] When implementing it, Figure 1 As shown, the second end of the support plate 110 may be provided with a limiting hole 111, and the distance between the limiting hole 111 and the first limiting plate 1211 is greater than the length of the battery pack 300. After the battery pack 300 is installed, a limiting member such as a bolt may be inserted into the limiting hole 111, and the limiting member protrudes in the second direction from the side of the support plate used to carry the battery pack 300, and the limiting member abuts against the first end of the battery pack 300 to limit the battery pack 300 from sliding out of the cabinet 200, thereby locking the battery pack 300. The difference between the distance between the limiting hole 111 and the first limiting plate 1211 and the length of the battery pack 300 is less than the length of the positioning pin 122 along the first direction, which can ensure that the positioning pin 122 is at least partially inserted into the positioning hole 320 on the battery pack 300, and ensure that the positioning pin 122 can play a role in limiting the freedom of the battery pack 300 in the second direction and the third direction. The limiting hole 111 can be a threaded hole, and the bolt is screwed into the threaded hole to achieve a fixed connection between the bolt and the support plate 110. Alternatively, the reverse side of the support plate 110 that carries the battery pack 300 can be riveted and / or welded with a nut, and the bolt can pass through the support plate 110 and be threadedly connected to the nut to achieve a fixed connection between the bolt and the support plate 110.

[0060] As a possible implementation, the energy storage cabinet 100 may further include a guide plate 130, the guide plate 130 extends along the first direction, the guide plate 130 is fixedly connected to the support plate 110, and the guide plate 130 and the support plate 110 are arranged at an angle, for example, the guide plate 130 may be arranged perpendicular to the support plate 110. In a specific implementation, the guide plate 130 is located on one side of the positioning pin 122 in the third direction, and the guide plate 130 may also be located on one side of the first limit plate 1211 in the third direction, and the reinforcing plate 124 may be fixedly connected to the guide plate 130, so that the first limit plate 1211 is fixedly connected to the guide plate 130. When the battery pack 300 is installed into the cabinet 200, the guide plate 130 may guide the battery pack 300 to move along the first direction, and the battery pack 300 may be preliminarily positioned, so that the positioning pin 122 may be relatively smoothly inserted into the positioning hole 320 on the battery pack 300, and then the positioning pin 122 may accurately position the battery pack 300.

[0061] Figure 8 The cross-sectional structure diagram of the energy storage cabinet provided by the present application is shown, combined with Figure 3 and Figure 8 As shown, the guide plate 130 has a first notch or groove on one side facing the positioning pin 122, and a roller 140 is rotatably arranged in the first notch or groove, and the rotation axis of the roller 140 is arranged along the second direction. The radius of the roller 140 is r, and the distance between the rotation axis of the roller 140 and the side of the guide plate 130 facing the positioning pin 122 is L, wherein r>L, ensuring that the roller 140 can be exposed from the guide plate 130. When the battery pack 300 is installed into the cabinet 200, the roller 140 has a guiding function, which can guide the movement of the battery pack 300, making the movement of the battery pack 300 more convenient and facilitating the installation of the battery pack 300 into the cabinet 200, and the rolling friction between the roller 140 and the side of the battery pack 300 can avoid the collision between the battery pack 300 and the guide plate 130, so that the battery pack 300 can be pushed to the first end of the support plate 110 relatively smoothly, reducing the possibility of damage to the battery pack 300 when it is installed into the cabinet 200. Specifically, the roller 140 can be installed in the area of ​​the guide plate 130 corresponding to the middle part of the support plate 110 along the first direction. The roller 140 can be connected to the guide plate 130 through a pin shaft, and the fixing method of the pin shaft is not required. It can be fixedly connected to the guide plate 130 through a retaining ring, a nut or welding. The number of rollers 140 is not required. When there are multiple rollers 140, the spacing between the rollers 140 is not required.

[0062] In the specific implementation, combined with Figure 1 and Figure 8As shown, the side of the guide plate 130 away from the positioning pin 122 in the third direction may be fixedly connected with the connecting frame 150, that is, the side of the guide plate 130 away from the positioning pin 122 is provided with the connecting frame 150. The connecting frame 150 may include a first connecting plate 151 and a second connecting plate 152 connected to each other, the first connecting plate 151 and the second connecting plate 152 are arranged at an angle, for example, the first connecting plate 151 and the second connecting plate 152 are arranged vertically, and the cross-sectional shape of the connecting frame 150 along the third direction is L-shaped. The second connecting plate 152 is fixedly connected to the guide plate 130 through the first connecting plate 151, and the second connecting plate 152 and the support plate 110 may be arranged vertically, and the cross-sectional shape of the connecting frame 150 and the guide plate 130 as a whole along the third direction is U-shaped. The second connecting plate 152 can be fixedly connected to the cabinet 200. Specifically, the second connecting plate 152 can be fixedly connected to the vertical frame of the cabinet 200 to achieve a fixed connection between the guide plate 130 and the cabinet 200, thereby achieving a fixed connection between the support plate 110 and the cabinet 200. The second connecting plate 152 can be fixedly connected to the cabinet 200 by screws, or the second connecting plate 152 can be welded to the cabinet 200 to achieve a fixed connection.

[0063] In a specific implementation, the connecting frame 150 may further include a third connecting plate, the third connecting plate is fixedly connected to the second connecting plate 152, the third connecting plate and the first connecting plate 151 may be arranged in parallel, the cross-sectional shape of the connecting frame 150 along the third direction may be U-shaped, and the structure of the connecting frame 150 is relatively stable. The second connecting plate 152 is fixedly connected to the guide plate 130 through the first connecting plate 151 and the third connecting plate, and the cross-sectional shape of the connecting frame 150 and the guide plate 130 as a whole along the third direction may be rectangular or square.

[0064] Fig. 9 shows a partial structural schematic diagram of the energy storage cabinet provided in this application, Fig. 9 The perspective is the perspective from a third direction. Figure 8 and Fig. 9 As shown, the second connecting plate 152 may be provided with a connecting hole, and the second connecting plate 152 is fixedly connected to the cabinet 200 through a connecting member 1521 provided in the connecting hole. For example, the connecting member 1521 may be a screw, which is inserted into the connecting hole and screwed into the cabinet 200 to achieve a fixed connection between the second connecting plate 152 and the cabinet 200, thereby achieving a fixed connection between the connecting frame 150 and the cabinet 200, thereby achieving a fixed connection between the guide plate 130 and the cabinet 200, and the connection between the second connecting plate 152 and the cabinet 200 is relatively stable, and the connection strength is high. The second connecting plate 152 may be provided with connecting holes in multiple regions along the first direction, and each region may have multiple connecting holes to improve the stability of the connection between the second connecting plate 152 and the cabinet 200.

[0065] like Fig. 9 and Fig.10 As shown, the guide plate 130 has a notch on one side facing the positioning pin 122. For the convenience of description, the notch is called the second notch 131. The projection of the second notch 131 along the third direction covers the connecting hole. When the connecting frame 150 is connected to the cabinet 200, specifically, when the second connecting plate 152 is connected to the cabinet 200, there is a larger operating space, which facilitates the connection operation of the connecting frame 150 and makes the connection between the connecting frame 150 and the cabinet 200 more convenient.

[0066] like Figure 1 and Fig.11 As shown, the guide plate 130 is fixedly connected with a fixing plate 160 on one side away from the positioning pin 122 in the third direction. Specifically, the fixing plate 160 can be fixedly connected to the second connecting plate 152 of the connecting frame 150. The fixing plate 160 can be fixedly connected to the guide plate 130 and the cabinet 200. Specifically, the fixing plate 160 can be welded to the guide plate 130 and the cabinet 200 respectively. On the basis that the guide plate 130 is fixedly connected to the cabinet 200 through the connecting frame 150 and the connecting member 1521, the stability of the connection between the guide plate 130 and the cabinet 200 is further improved, and the structural strength of the guide plate 130 and the cabinet 200 after being connected is improved. In a specific implementation, the fixing plate 160 and the guide plate 130 can be vertically arranged to facilitate the connection between the guide plate 130 and the cabinet 200. The number of the fixing plates 160 can be multiple to further improve the stability of the connection between the guide plate 130 and the cabinet 200, and the multiple fixing plates 160 can be evenly distributed along the first direction.

[0067] In the present application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B may be singular or plural. In the text description of the present application, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship; in the formula of the present application, the character " / " indicates that the previous and next associated objects are in a "division" relationship. "Including at least one of A, B and C" may mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0068] It is understood that the various numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

[0069] The above are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed in the present application should be covered within the protection scope of the present application.

Claims

1. An energy storage cabinet, characterized in that: It includes a cabinet, a support plate and a limit assembly; The cabinet has a containing space inside, and the support plate is fixedly connected to the side wall of the cabinet; The support plate extends along a first direction, and the support plate has a first end and a second end along the first direction; The limiting assembly includes a first limiting plate and a positioning pin, wherein the first limiting plate is fixedly connected to the first end of the support plate, the first limiting plate is perpendicular to the support plate, the positioning pin is fixedly connected to the surface of the first limiting plate facing the second end of the support plate, and the positioning pin extends toward the second end of the support plate; The energy storage cabinet further includes a battery pack, and the battery pack is located in the accommodation space; Two support plates are arranged on two opposite side walls of the cabinet, and the two support plates are arranged opposite to each other in a third direction and jointly support the battery pack, and the third direction is perpendicular to the first direction; The battery pack has a first surface and a second surface in the first direction, the first surface is used to abut against the first limiting plate, the first surface has a first end and a second end in the third direction, the first end and the second end are provided with positioning holes, the positioning holes extend toward the second surface, and the positioning holes are plugged with the positioning pins; The first end of the first surface and the second end of the first surface are respectively provided with protrusions, each of the protrusions has a first surface and a second surface along the first direction, the positioning hole is provided on the first surface of each of the protrusions, and the second surface of the protrusion is fixedly connected to the shell of the battery pack.

2. The energy storage cabinet according to claim 1, characterized in that: The positioning pin has a first end and a second end along the first direction, the second end of the positioning pin is an end of the positioning pin close to the second end of the support plate, the first end of the positioning pin is an end of the positioning pin close to the first end of the support plate, and the second end of the positioning pin has a tapered structure, and the tapered structure is coaxially arranged with the positioning pin; The radial dimension of the second end of the positioning pin is smaller than the radial dimension of the first end of the positioning pin.

3. The energy storage cabinet according to claim 2, characterized in that: Along the direction from the second end of the positioning pin to the first end of the positioning pin, the radial dimension of the tapered structure increases gradually.

4. The energy storage cabinet according to any one of claims 1 to 3, characterized in that: The limiting assembly also includes a second limiting plate, which has a first end and a second end along the first direction, the first end of the second limiting plate is fixed to an end of the first limiting plate away from the support plate, and the second limiting plate extends toward the second end of the support plate.

5. The energy storage cabinet according to claim 4, characterized in that: The limiting assembly also includes a third limiting plate, the second end of the second limiting plate is fixedly connected to the third limiting plate, the second limiting plate is perpendicular to the first limiting plate, and the third limiting plate is bent relative to the second limiting plate in a direction away from the support plate.

6. The energy storage cabinet according to claim 4, characterized in that: The positioning pin is located between the second limiting plate and the supporting plate in a second direction, and the second direction is perpendicular to the first direction.

7. The energy storage cabinet according to claim 4, characterized in that: The limiting assembly also includes a reinforcing plate, which has a first connecting surface and a second connecting surface connected to each other, the first connecting surface and the second connecting surface are perpendicular, the first connecting surface is fixedly connected to the surface of the first limiting plate facing the second end of the support plate, and the second connecting surface is fixedly connected to the surface of the second limiting plate facing the support plate.

8. The energy storage cabinet according to any one of claims 1 to 3, characterized in that: A limiting hole is provided at the second end of the support plate, and the limiting hole is used to install a limiting member, and the limiting member protrudes from the support plate in a second direction, and the second direction is perpendicular to the first direction. The distance between the limiting hole and the first limiting plate is greater than the length of the battery pack, and the difference between the distance between the limiting hole and the first limiting plate and the length of the battery pack is less than the length of the positioning pin along the first direction.

9. The energy storage cabinet according to any one of claims 1 to 3, characterized in that: It also includes a guide plate, the guide plate extends along the first direction, the guide plate is fixedly connected to the support plate, and the guide plate is vertically arranged to the support plate; The guide plate is located on one side of the positioning pin in a third direction, and the third direction is perpendicular to the first direction.

10. The energy storage cabinet according to claim 9, characterized in that: The guide plate is rotatably provided with a roller, the rotation axis of the roller is arranged along a second direction, and the second direction is perpendicular to the first direction; The radius of the roller is r, and the distance between the rotation axis of the roller and a side of the guide plate facing the positioning pin is L, wherein r>L.

11. The energy storage cabinet according to claim 9, characterized in that: The guide plate is fixedly connected to a connecting frame on one side of the guide plate in the third direction away from the positioning pin, the connecting frame comprising a first connecting plate and a second connecting plate connected to each other, the first connecting plate and the second connecting plate being arranged at an angle; The second connecting plate is fixedly connected to the guide plate through the first connecting plate, the second connecting plate is vertically arranged to the supporting plate, and the second connecting plate is fixedly connected to the cabinet.

12. The energy storage cabinet according to claim 9, characterized in that: A fixing plate is fixedly connected to the guide plate at one side of the guide plate away from the positioning pin in the third direction, the fixing plate is fixedly connected to the guide plate and the cabinet, and the fixing plate is vertically arranged to the guide plate.

13. A battery pack, characterized in that: It comprises a shell and a plurality of battery cells, wherein the plurality of battery cells are arrayed inside the shell; The shell has a first surface and a second surface in the length direction of the battery pack, the first surface of the shell has a first end and a second end in the width direction of the battery pack, the first end and the second end are provided with positioning holes, and the positioning holes extend toward the second surface of the shell; The first end and the second end are provided with two protrusions, each of the protrusions has a first surface and a second surface along the length direction of the battery pack, the positioning hole is provided on the first surface of each of the protrusions, and the second surface of the protrusions is fixedly connected to the shell.

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